|
Ruby 1.9.2p180(2011-02-18revision30909)
|
00001 /********************************************************************** 00002 00003 parse.y - 00004 00005 $Author: yugui $ 00006 created at: Fri May 28 18:02:42 JST 1993 00007 00008 Copyright (C) 1993-2007 Yukihiro Matsumoto 00009 00010 **********************************************************************/ 00011 00012 %{ 00013 00014 #define YYDEBUG 1 00015 #define YYERROR_VERBOSE 1 00016 #define YYSTACK_USE_ALLOCA 0 00017 00018 #include "ruby/ruby.h" 00019 #include "ruby/st.h" 00020 #include "ruby/encoding.h" 00021 #include "node.h" 00022 #include "parse.h" 00023 #include "id.h" 00024 #include "regenc.h" 00025 #include <stdio.h> 00026 #include <errno.h> 00027 #include <ctype.h> 00028 00029 #define numberof(array) (int)(sizeof(array) / sizeof((array)[0])) 00030 00031 #define YYMALLOC(size) rb_parser_malloc(parser, size) 00032 #define YYREALLOC(ptr, size) rb_parser_realloc(parser, ptr, size) 00033 #define YYCALLOC(nelem, size) rb_parser_calloc(parser, nelem, size) 00034 #define YYFREE(ptr) rb_parser_free(parser, ptr) 00035 #define malloc YYMALLOC 00036 #define realloc YYREALLOC 00037 #define calloc YYCALLOC 00038 #define free YYFREE 00039 00040 #ifndef RIPPER 00041 static ID register_symid(ID, const char *, long, rb_encoding *); 00042 #define REGISTER_SYMID(id, name) register_symid(id, name, strlen(name), enc) 00043 #include "id.c" 00044 #endif 00045 00046 #define is_notop_id(id) ((id)>tLAST_TOKEN) 00047 #define is_local_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_LOCAL) 00048 #define is_global_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_GLOBAL) 00049 #define is_instance_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_INSTANCE) 00050 #define is_attrset_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_ATTRSET) 00051 #define is_const_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CONST) 00052 #define is_class_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CLASS) 00053 #define is_junk_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_JUNK) 00054 00055 #define is_asgn_or_id(id) ((is_notop_id(id)) && \ 00056 (((id)&ID_SCOPE_MASK) == ID_GLOBAL || \ 00057 ((id)&ID_SCOPE_MASK) == ID_INSTANCE || \ 00058 ((id)&ID_SCOPE_MASK) == ID_CLASS)) 00059 00060 enum lex_state_e { 00061 EXPR_BEG, /* ignore newline, +/- is a sign. */ 00062 EXPR_END, /* newline significant, +/- is an operator. */ 00063 EXPR_ENDARG, /* ditto, and unbound braces. */ 00064 EXPR_ENDFN, /* ditto, and unbound braces. */ 00065 EXPR_ARG, /* newline significant, +/- is an operator. */ 00066 EXPR_CMDARG, /* newline significant, +/- is an operator. */ 00067 EXPR_MID, /* newline significant, +/- is an operator. */ 00068 EXPR_FNAME, /* ignore newline, no reserved words. */ 00069 EXPR_DOT, /* right after `.' or `::', no reserved words. */ 00070 EXPR_CLASS, /* immediate after `class', no here document. */ 00071 EXPR_VALUE, /* alike EXPR_BEG but label is disallowed. */ 00072 EXPR_MAX_STATE 00073 }; 00074 00075 typedef VALUE stack_type; 00076 00077 # define BITSTACK_PUSH(stack, n) (stack = (stack<<1)|((n)&1)) 00078 # define BITSTACK_POP(stack) (stack = stack >> 1) 00079 # define BITSTACK_LEXPOP(stack) (stack = (stack >> 1) | (stack & 1)) 00080 # define BITSTACK_SET_P(stack) (stack&1) 00081 00082 #define COND_PUSH(n) BITSTACK_PUSH(cond_stack, n) 00083 #define COND_POP() BITSTACK_POP(cond_stack) 00084 #define COND_LEXPOP() BITSTACK_LEXPOP(cond_stack) 00085 #define COND_P() BITSTACK_SET_P(cond_stack) 00086 00087 #define CMDARG_PUSH(n) BITSTACK_PUSH(cmdarg_stack, n) 00088 #define CMDARG_POP() BITSTACK_POP(cmdarg_stack) 00089 #define CMDARG_LEXPOP() BITSTACK_LEXPOP(cmdarg_stack) 00090 #define CMDARG_P() BITSTACK_SET_P(cmdarg_stack) 00091 00092 struct vtable { 00093 ID *tbl; 00094 int pos; 00095 int capa; 00096 struct vtable *prev; 00097 }; 00098 00099 struct local_vars { 00100 struct vtable *args; 00101 struct vtable *vars; 00102 struct local_vars *prev; 00103 }; 00104 00105 #define DVARS_INHERIT ((void*)1) 00106 #define DVARS_TOPSCOPE NULL 00107 #define DVARS_SPECIAL_P(tbl) (!POINTER_P(tbl)) 00108 #define POINTER_P(val) ((VALUE)(val) & ~(VALUE)3) 00109 00110 static int 00111 vtable_size(const struct vtable *tbl) 00112 { 00113 if (POINTER_P(tbl)) { 00114 return tbl->pos; 00115 } 00116 else { 00117 return 0; 00118 } 00119 } 00120 00121 #define VTBL_DEBUG 0 00122 00123 static struct vtable * 00124 vtable_alloc(struct vtable *prev) 00125 { 00126 struct vtable *tbl = ALLOC(struct vtable); 00127 tbl->pos = 0; 00128 tbl->capa = 8; 00129 tbl->tbl = ALLOC_N(ID, tbl->capa); 00130 tbl->prev = prev; 00131 if (VTBL_DEBUG) printf("vtable_alloc: %p\n", (void *)tbl); 00132 return tbl; 00133 } 00134 00135 static void 00136 vtable_free(struct vtable *tbl) 00137 { 00138 if (VTBL_DEBUG)printf("vtable_free: %p\n", (void *)tbl); 00139 if (POINTER_P(tbl)) { 00140 if (tbl->tbl) { 00141 xfree(tbl->tbl); 00142 } 00143 xfree(tbl); 00144 } 00145 } 00146 00147 static void 00148 vtable_add(struct vtable *tbl, ID id) 00149 { 00150 if (!POINTER_P(tbl)) { 00151 rb_bug("vtable_add: vtable is not allocated (%p)", (void *)tbl); 00152 } 00153 if (VTBL_DEBUG) printf("vtable_add: %p, %s\n", (void *)tbl, rb_id2name(id)); 00154 00155 if (tbl->pos == tbl->capa) { 00156 tbl->capa = tbl->capa * 2; 00157 REALLOC_N(tbl->tbl, ID, tbl->capa); 00158 } 00159 tbl->tbl[tbl->pos++] = id; 00160 } 00161 00162 static int 00163 vtable_included(const struct vtable * tbl, ID id) 00164 { 00165 int i; 00166 00167 if (POINTER_P(tbl)) { 00168 for (i = 0; i < tbl->pos; i++) { 00169 if (tbl->tbl[i] == id) { 00170 return 1; 00171 } 00172 } 00173 } 00174 return 0; 00175 } 00176 00177 00178 #ifndef RIPPER 00179 typedef struct token_info { 00180 const char *token; 00181 int linenum; 00182 int column; 00183 int nonspc; 00184 struct token_info *next; 00185 } token_info; 00186 #endif 00187 00188 /* 00189 Structure of Lexer Buffer: 00190 00191 lex_pbeg tokp lex_p lex_pend 00192 | | | | 00193 |-----------+--------------+------------| 00194 |<------------>| 00195 token 00196 */ 00197 struct parser_params { 00198 int is_ripper; 00199 NODE *heap; 00200 00201 YYSTYPE *parser_yylval; 00202 VALUE eofp; 00203 00204 NODE *parser_lex_strterm; 00205 enum lex_state_e parser_lex_state; 00206 stack_type parser_cond_stack; 00207 stack_type parser_cmdarg_stack; 00208 int parser_class_nest; 00209 int parser_paren_nest; 00210 int parser_lpar_beg; 00211 int parser_in_single; 00212 int parser_in_def; 00213 int parser_compile_for_eval; 00214 VALUE parser_cur_mid; 00215 int parser_in_defined; 00216 char *parser_tokenbuf; 00217 int parser_tokidx; 00218 int parser_toksiz; 00219 VALUE parser_lex_input; 00220 VALUE parser_lex_lastline; 00221 VALUE parser_lex_nextline; 00222 const char *parser_lex_pbeg; 00223 const char *parser_lex_p; 00224 const char *parser_lex_pend; 00225 int parser_heredoc_end; 00226 int parser_command_start; 00227 NODE *parser_deferred_nodes; 00228 long parser_lex_gets_ptr; 00229 VALUE (*parser_lex_gets)(struct parser_params*,VALUE); 00230 struct local_vars *parser_lvtbl; 00231 int parser_ruby__end__seen; 00232 int line_count; 00233 int has_shebang; 00234 char *parser_ruby_sourcefile; /* current source file */ 00235 int parser_ruby_sourceline; /* current line no. */ 00236 rb_encoding *enc; 00237 rb_encoding *utf8; 00238 00239 int parser_yydebug; 00240 00241 #ifndef RIPPER 00242 /* Ruby core only */ 00243 NODE *parser_eval_tree_begin; 00244 NODE *parser_eval_tree; 00245 VALUE debug_lines; 00246 VALUE coverage; 00247 int nerr; 00248 00249 token_info *parser_token_info; 00250 #else 00251 /* Ripper only */ 00252 VALUE parser_ruby_sourcefile_string; 00253 const char *tokp; 00254 VALUE delayed; 00255 int delayed_line; 00256 int delayed_col; 00257 00258 VALUE value; 00259 VALUE result; 00260 VALUE parsing_thread; 00261 int toplevel_p; 00262 #endif 00263 }; 00264 00265 #define UTF8_ENC() (parser->utf8 ? parser->utf8 : \ 00266 (parser->utf8 = rb_utf8_encoding())) 00267 #define STR_NEW(p,n) rb_enc_str_new((p),(n),parser->enc) 00268 #define STR_NEW0() rb_enc_str_new(0,0,parser->enc) 00269 #define STR_NEW2(p) rb_enc_str_new((p),strlen(p),parser->enc) 00270 #define STR_NEW3(p,n,e,func) parser_str_new((p),(n),(e),(func),parser->enc) 00271 #define ENC_SINGLE(cr) ((cr)==ENC_CODERANGE_7BIT) 00272 #define TOK_INTERN(mb) rb_intern3(tok(), toklen(), parser->enc) 00273 00274 #ifdef YYMALLOC 00275 void *rb_parser_malloc(struct parser_params *, size_t); 00276 void *rb_parser_realloc(struct parser_params *, void *, size_t); 00277 void *rb_parser_calloc(struct parser_params *, size_t, size_t); 00278 void rb_parser_free(struct parser_params *, void *); 00279 #endif 00280 00281 static int parser_yyerror(struct parser_params*, const char*); 00282 #define yyerror(msg) parser_yyerror(parser, msg) 00283 00284 #define YYLEX_PARAM parser 00285 00286 #define lex_strterm (parser->parser_lex_strterm) 00287 #define lex_state (parser->parser_lex_state) 00288 #define cond_stack (parser->parser_cond_stack) 00289 #define cmdarg_stack (parser->parser_cmdarg_stack) 00290 #define class_nest (parser->parser_class_nest) 00291 #define paren_nest (parser->parser_paren_nest) 00292 #define lpar_beg (parser->parser_lpar_beg) 00293 #define in_single (parser->parser_in_single) 00294 #define in_def (parser->parser_in_def) 00295 #define compile_for_eval (parser->parser_compile_for_eval) 00296 #define cur_mid (parser->parser_cur_mid) 00297 #define in_defined (parser->parser_in_defined) 00298 #define tokenbuf (parser->parser_tokenbuf) 00299 #define tokidx (parser->parser_tokidx) 00300 #define toksiz (parser->parser_toksiz) 00301 #define lex_input (parser->parser_lex_input) 00302 #define lex_lastline (parser->parser_lex_lastline) 00303 #define lex_nextline (parser->parser_lex_nextline) 00304 #define lex_pbeg (parser->parser_lex_pbeg) 00305 #define lex_p (parser->parser_lex_p) 00306 #define lex_pend (parser->parser_lex_pend) 00307 #define heredoc_end (parser->parser_heredoc_end) 00308 #define command_start (parser->parser_command_start) 00309 #define deferred_nodes (parser->parser_deferred_nodes) 00310 #define lex_gets_ptr (parser->parser_lex_gets_ptr) 00311 #define lex_gets (parser->parser_lex_gets) 00312 #define lvtbl (parser->parser_lvtbl) 00313 #define ruby__end__seen (parser->parser_ruby__end__seen) 00314 #define ruby_sourceline (parser->parser_ruby_sourceline) 00315 #define ruby_sourcefile (parser->parser_ruby_sourcefile) 00316 #define yydebug (parser->parser_yydebug) 00317 #ifdef RIPPER 00318 #else 00319 #define ruby_eval_tree (parser->parser_eval_tree) 00320 #define ruby_eval_tree_begin (parser->parser_eval_tree_begin) 00321 #define ruby_debug_lines (parser->debug_lines) 00322 #define ruby_coverage (parser->coverage) 00323 #endif 00324 00325 static int yylex(void*, void*); 00326 00327 #ifndef RIPPER 00328 #define yyparse ruby_yyparse 00329 00330 static NODE* node_newnode(struct parser_params *, enum node_type, VALUE, VALUE, VALUE); 00331 #define rb_node_newnode(type, a1, a2, a3) node_newnode(parser, type, a1, a2, a3) 00332 00333 static NODE *cond_gen(struct parser_params*,NODE*); 00334 #define cond(node) cond_gen(parser, node) 00335 static NODE *logop_gen(struct parser_params*,enum node_type,NODE*,NODE*); 00336 #define logop(type,node1,node2) logop_gen(parser, type, node1, node2) 00337 00338 static NODE *newline_node(NODE*); 00339 static void fixpos(NODE*,NODE*); 00340 00341 static int value_expr_gen(struct parser_params*,NODE*); 00342 static void void_expr_gen(struct parser_params*,NODE*); 00343 static NODE *remove_begin(NODE*); 00344 #define value_expr(node) value_expr_gen(parser, (node) = remove_begin(node)) 00345 #define void_expr0(node) void_expr_gen(parser, (node)) 00346 #define void_expr(node) void_expr0((node) = remove_begin(node)) 00347 static void void_stmts_gen(struct parser_params*,NODE*); 00348 #define void_stmts(node) void_stmts_gen(parser, node) 00349 static void reduce_nodes_gen(struct parser_params*,NODE**); 00350 #define reduce_nodes(n) reduce_nodes_gen(parser,n) 00351 static void block_dup_check_gen(struct parser_params*,NODE*,NODE*); 00352 #define block_dup_check(n1,n2) block_dup_check_gen(parser,n1,n2) 00353 00354 static NODE *block_append_gen(struct parser_params*,NODE*,NODE*); 00355 #define block_append(h,t) block_append_gen(parser,h,t) 00356 static NODE *list_append_gen(struct parser_params*,NODE*,NODE*); 00357 #define list_append(l,i) list_append_gen(parser,l,i) 00358 static NODE *list_concat_gen(struct parser_params*,NODE*,NODE*); 00359 #define list_concat(h,t) list_concat_gen(parser,h,t) 00360 static NODE *arg_append_gen(struct parser_params*,NODE*,NODE*); 00361 #define arg_append(h,t) arg_append_gen(parser,h,t) 00362 static NODE *arg_concat_gen(struct parser_params*,NODE*,NODE*); 00363 #define arg_concat(h,t) arg_concat_gen(parser,h,t) 00364 static NODE *literal_concat_gen(struct parser_params*,NODE*,NODE*); 00365 #define literal_concat(h,t) literal_concat_gen(parser,h,t) 00366 static int literal_concat0(struct parser_params *, VALUE, VALUE); 00367 static NODE *new_evstr_gen(struct parser_params*,NODE*); 00368 #define new_evstr(n) new_evstr_gen(parser,n) 00369 static NODE *evstr2dstr_gen(struct parser_params*,NODE*); 00370 #define evstr2dstr(n) evstr2dstr_gen(parser,n) 00371 static NODE *splat_array(NODE*); 00372 00373 static NODE *call_bin_op_gen(struct parser_params*,NODE*,ID,NODE*); 00374 #define call_bin_op(recv,id,arg1) call_bin_op_gen(parser, recv,id,arg1) 00375 static NODE *call_uni_op_gen(struct parser_params*,NODE*,ID); 00376 #define call_uni_op(recv,id) call_uni_op_gen(parser, recv,id) 00377 00378 static NODE *new_args_gen(struct parser_params*,NODE*,NODE*,ID,NODE*,ID); 00379 #define new_args(f,o,r,p,b) new_args_gen(parser, f,o,r,p,b) 00380 00381 static NODE *negate_lit(NODE*); 00382 static NODE *ret_args_gen(struct parser_params*,NODE*); 00383 #define ret_args(node) ret_args_gen(parser, node) 00384 static NODE *arg_blk_pass(NODE*,NODE*); 00385 static NODE *new_yield_gen(struct parser_params*,NODE*); 00386 #define new_yield(node) new_yield_gen(parser, node) 00387 00388 static NODE *gettable_gen(struct parser_params*,ID); 00389 #define gettable(id) gettable_gen(parser,id) 00390 static NODE *assignable_gen(struct parser_params*,ID,NODE*); 00391 #define assignable(id,node) assignable_gen(parser, id, node) 00392 00393 static NODE *aryset_gen(struct parser_params*,NODE*,NODE*); 00394 #define aryset(node1,node2) aryset_gen(parser, node1, node2) 00395 static NODE *attrset_gen(struct parser_params*,NODE*,ID); 00396 #define attrset(node,id) attrset_gen(parser, node, id) 00397 00398 static void rb_backref_error_gen(struct parser_params*,NODE*); 00399 #define rb_backref_error(n) rb_backref_error_gen(parser,n) 00400 static NODE *node_assign_gen(struct parser_params*,NODE*,NODE*); 00401 #define node_assign(node1, node2) node_assign_gen(parser, node1, node2) 00402 00403 static NODE *match_op_gen(struct parser_params*,NODE*,NODE*); 00404 #define match_op(node1,node2) match_op_gen(parser, node1, node2) 00405 00406 static ID *local_tbl_gen(struct parser_params*); 00407 #define local_tbl() local_tbl_gen(parser) 00408 00409 static void fixup_nodes(NODE **); 00410 00411 extern int rb_dvar_defined(ID); 00412 extern int rb_local_defined(ID); 00413 extern int rb_parse_in_eval(void); 00414 extern int rb_parse_in_main(void); 00415 00416 static VALUE reg_compile_gen(struct parser_params*, VALUE, int); 00417 #define reg_compile(str,options) reg_compile_gen(parser, str, options) 00418 static void reg_fragment_setenc_gen(struct parser_params*, VALUE, int); 00419 #define reg_fragment_setenc(str,options) reg_fragment_setenc_gen(parser, str, options) 00420 static int reg_fragment_check_gen(struct parser_params*, VALUE, int); 00421 #define reg_fragment_check(str,options) reg_fragment_check_gen(parser, str, options) 00422 static NODE *reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp, NODE *match); 00423 #define reg_named_capture_assign(regexp,match) reg_named_capture_assign_gen(parser,regexp,match) 00424 00425 #define get_id(id) (id) 00426 #define get_value(val) (val) 00427 #else 00428 #define remove_begin(node) (node) 00429 #define rb_dvar_defined(id) 0 00430 #define rb_local_defined(id) 0 00431 static ID ripper_get_id(VALUE); 00432 #define get_id(id) ripper_get_id(id) 00433 static VALUE ripper_get_value(VALUE); 00434 #define get_value(val) ripper_get_value(val) 00435 static VALUE assignable_gen(struct parser_params*,VALUE); 00436 #define assignable(lhs,node) assignable_gen(parser, lhs) 00437 #endif /* !RIPPER */ 00438 00439 static ID formal_argument_gen(struct parser_params*, ID); 00440 #define formal_argument(id) formal_argument_gen(parser, id) 00441 static ID shadowing_lvar_gen(struct parser_params*,ID); 00442 #define shadowing_lvar(name) shadowing_lvar_gen(parser, name) 00443 static void new_bv_gen(struct parser_params*,ID); 00444 #define new_bv(id) new_bv_gen(parser, id) 00445 00446 static void local_push_gen(struct parser_params*,int); 00447 #define local_push(top) local_push_gen(parser,top) 00448 static void local_pop_gen(struct parser_params*); 00449 #define local_pop() local_pop_gen(parser) 00450 static int local_var_gen(struct parser_params*, ID); 00451 #define local_var(id) local_var_gen(parser, id); 00452 static int arg_var_gen(struct parser_params*, ID); 00453 #define arg_var(id) arg_var_gen(parser, id) 00454 static int local_id_gen(struct parser_params*, ID); 00455 #define local_id(id) local_id_gen(parser, id) 00456 static ID internal_id_gen(struct parser_params*); 00457 #define internal_id() internal_id_gen(parser) 00458 00459 static const struct vtable *dyna_push_gen(struct parser_params *); 00460 #define dyna_push() dyna_push_gen(parser) 00461 static void dyna_pop_gen(struct parser_params*, const struct vtable *); 00462 #define dyna_pop(node) dyna_pop_gen(parser, node) 00463 static int dyna_in_block_gen(struct parser_params*); 00464 #define dyna_in_block() dyna_in_block_gen(parser) 00465 #define dyna_var(id) local_var(id) 00466 static int dvar_defined_gen(struct parser_params*,ID); 00467 #define dvar_defined(id) dvar_defined_gen(parser, id) 00468 static int dvar_curr_gen(struct parser_params*,ID); 00469 #define dvar_curr(id) dvar_curr_gen(parser, id) 00470 00471 static int lvar_defined_gen(struct parser_params*, ID); 00472 #define lvar_defined(id) lvar_defined_gen(parser, id) 00473 00474 #define RE_OPTION_ONCE (1<<16) 00475 #define RE_OPTION_ENCODING_SHIFT 8 00476 #define RE_OPTION_ENCODING(e) (((e)&0xff)<<RE_OPTION_ENCODING_SHIFT) 00477 #define RE_OPTION_ENCODING_IDX(o) (((o)>>RE_OPTION_ENCODING_SHIFT)&0xff) 00478 #define RE_OPTION_ENCODING_NONE(o) ((o)&RE_OPTION_ARG_ENCODING_NONE) 00479 #define RE_OPTION_MASK 0xff 00480 #define RE_OPTION_ARG_ENCODING_NONE 32 00481 00482 #define NODE_STRTERM NODE_ZARRAY /* nothing to gc */ 00483 #define NODE_HEREDOC NODE_ARRAY /* 1, 3 to gc */ 00484 #define SIGN_EXTEND(x,n) (((1<<(n)-1)^((x)&~(~0<<(n))))-(1<<(n)-1)) 00485 #define nd_func u1.id 00486 #if SIZEOF_SHORT == 2 00487 #define nd_term(node) ((signed short)(node)->u2.id) 00488 #else 00489 #define nd_term(node) SIGN_EXTEND((node)->u2.id, CHAR_BIT*2) 00490 #endif 00491 #define nd_paren(node) (char)((node)->u2.id >> CHAR_BIT*2) 00492 #define nd_nest u3.cnt 00493 00494 /****** Ripper *******/ 00495 00496 #ifdef RIPPER 00497 #define RIPPER_VERSION "0.1.0" 00498 00499 #include "eventids1.c" 00500 #include "eventids2.c" 00501 static ID ripper_id_gets; 00502 00503 static VALUE ripper_dispatch0(struct parser_params*,ID); 00504 static VALUE ripper_dispatch1(struct parser_params*,ID,VALUE); 00505 static VALUE ripper_dispatch2(struct parser_params*,ID,VALUE,VALUE); 00506 static VALUE ripper_dispatch3(struct parser_params*,ID,VALUE,VALUE,VALUE); 00507 static VALUE ripper_dispatch4(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE); 00508 static VALUE ripper_dispatch5(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE); 00509 00510 #define dispatch0(n) ripper_dispatch0(parser, TOKEN_PASTE(ripper_id_, n)) 00511 #define dispatch1(n,a) ripper_dispatch1(parser, TOKEN_PASTE(ripper_id_, n), a) 00512 #define dispatch2(n,a,b) ripper_dispatch2(parser, TOKEN_PASTE(ripper_id_, n), a, b) 00513 #define dispatch3(n,a,b,c) ripper_dispatch3(parser, TOKEN_PASTE(ripper_id_, n), a, b, c) 00514 #define dispatch4(n,a,b,c,d) ripper_dispatch4(parser, TOKEN_PASTE(ripper_id_, n), a, b, c, d) 00515 #define dispatch5(n,a,b,c,d,e) ripper_dispatch5(parser, TOKEN_PASTE(ripper_id_, n), a, b, c, d, e) 00516 00517 #define yyparse ripper_yyparse 00518 00519 #define ripper_intern(s) ID2SYM(rb_intern(s)) 00520 static VALUE ripper_id2sym(ID); 00521 #ifdef __GNUC__ 00522 #define ripper_id2sym(id) ((id) < 256 && rb_ispunct(id) ? \ 00523 ID2SYM(id) : ripper_id2sym(id)) 00524 #endif 00525 00526 #define arg_new() dispatch0(args_new) 00527 #define arg_add(l,a) dispatch2(args_add, l, a) 00528 #define arg_add_star(l,a) dispatch2(args_add_star, l, a) 00529 #define arg_add_block(l,b) dispatch2(args_add_block, l, b) 00530 #define arg_add_optblock(l,b) ((b)==Qundef? l : dispatch2(args_add_block, l, b)) 00531 #define bare_assoc(v) dispatch1(bare_assoc_hash, v) 00532 #define arg_add_assocs(l,b) arg_add(l, bare_assoc(b)) 00533 00534 #define args2mrhs(a) dispatch1(mrhs_new_from_args, a) 00535 #define mrhs_new() dispatch0(mrhs_new) 00536 #define mrhs_add(l,a) dispatch2(mrhs_add, l, a) 00537 #define mrhs_add_star(l,a) dispatch2(mrhs_add_star, l, a) 00538 00539 #define mlhs_new() dispatch0(mlhs_new) 00540 #define mlhs_add(l,a) dispatch2(mlhs_add, l, a) 00541 #define mlhs_add_star(l,a) dispatch2(mlhs_add_star, l, a) 00542 00543 #define params_new(pars, opts, rest, pars2, blk) \ 00544 dispatch5(params, pars, opts, rest, pars2, blk) 00545 00546 #define blockvar_new(p,v) dispatch2(block_var, p, v) 00547 #define blockvar_add_star(l,a) dispatch2(block_var_add_star, l, a) 00548 #define blockvar_add_block(l,a) dispatch2(block_var_add_block, l, a) 00549 00550 #define method_optarg(m,a) ((a)==Qundef ? m : dispatch2(method_add_arg,m,a)) 00551 #define method_arg(m,a) dispatch2(method_add_arg,m,a) 00552 #define method_add_block(m,b) dispatch2(method_add_block, m, b) 00553 00554 #define escape_Qundef(x) ((x)==Qundef ? Qnil : (x)) 00555 00556 #define FIXME 0 00557 00558 #endif /* RIPPER */ 00559 00560 #ifndef RIPPER 00561 # define ifndef_ripper(x) x 00562 #else 00563 # define ifndef_ripper(x) 00564 #endif 00565 00566 #ifndef RIPPER 00567 # define rb_warn0(fmt) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt) 00568 # define rb_warnI(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt, a) 00569 # define rb_warnS(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt, a) 00570 # define rb_warning0(fmt) rb_compile_warning(ruby_sourcefile, ruby_sourceline, fmt) 00571 # define rb_warningS(fmt,a) rb_compile_warning(ruby_sourcefile, ruby_sourceline, fmt, a) 00572 #else 00573 # define rb_warn0(fmt) ripper_warn0(parser, fmt) 00574 # define rb_warnI(fmt,a) ripper_warnI(parser, fmt, a) 00575 # define rb_warnS(fmt,a) ripper_warnS(parser, fmt, a) 00576 # define rb_warning0(fmt) ripper_warning0(parser, fmt) 00577 # define rb_warningS(fmt,a) ripper_warningS(parser, fmt, a) 00578 static void ripper_warn0(struct parser_params*, const char*); 00579 static void ripper_warnI(struct parser_params*, const char*, int); 00580 #if 0 00581 static void ripper_warnS(struct parser_params*, const char*, const char*); 00582 #endif 00583 static void ripper_warning0(struct parser_params*, const char*); 00584 static void ripper_warningS(struct parser_params*, const char*, const char*); 00585 #endif 00586 00587 #ifdef RIPPER 00588 static void ripper_compile_error(struct parser_params*, const char *fmt, ...); 00589 # define rb_compile_error ripper_compile_error 00590 # define compile_error ripper_compile_error 00591 # define PARSER_ARG parser, 00592 #else 00593 # define compile_error parser->nerr++,rb_compile_error 00594 # define PARSER_ARG ruby_sourcefile, ruby_sourceline, 00595 #endif 00596 00597 /* Older versions of Yacc set YYMAXDEPTH to a very low value by default (150, 00598 for instance). This is too low for Ruby to parse some files, such as 00599 date/format.rb, therefore bump the value up to at least Bison's default. */ 00600 #ifdef OLD_YACC 00601 #ifndef YYMAXDEPTH 00602 #define YYMAXDEPTH 10000 00603 #endif 00604 #endif 00605 00606 #ifndef RIPPER 00607 static void token_info_push(struct parser_params*, const char *token); 00608 static void token_info_pop(struct parser_params*, const char *token); 00609 #define token_info_push(token) (RTEST(ruby_verbose) ? token_info_push(parser, token) : (void)0) 00610 #define token_info_pop(token) (RTEST(ruby_verbose) ? token_info_pop(parser, token) : (void)0) 00611 #else 00612 #define token_info_push(token) /* nothing */ 00613 #define token_info_pop(token) /* nothing */ 00614 #endif 00615 %} 00616 00617 %pure_parser 00618 %parse-param {struct parser_params *parser} 00619 00620 %union { 00621 VALUE val; 00622 NODE *node; 00623 ID id; 00624 int num; 00625 const struct vtable *vars; 00626 } 00627 00628 /* 00629 %token 00630 */ 00631 %token <val> 00632 00633 keyword_class 00634 keyword_module 00635 keyword_def 00636 keyword_undef 00637 keyword_begin 00638 keyword_rescue 00639 keyword_ensure 00640 keyword_end 00641 keyword_if 00642 keyword_unless 00643 keyword_then 00644 keyword_elsif 00645 keyword_else 00646 keyword_case 00647 keyword_when 00648 keyword_while 00649 keyword_until 00650 keyword_for 00651 keyword_break 00652 keyword_next 00653 keyword_redo 00654 keyword_retry 00655 keyword_in 00656 keyword_do 00657 keyword_do_cond 00658 keyword_do_block 00659 keyword_do_LAMBDA 00660 keyword_return 00661 keyword_yield 00662 keyword_super 00663 keyword_self 00664 keyword_nil 00665 keyword_true 00666 keyword_false 00667 keyword_and 00668 keyword_or 00669 keyword_not 00670 modifier_if 00671 modifier_unless 00672 modifier_while 00673 modifier_until 00674 modifier_rescue 00675 keyword_alias 00676 keyword_defined 00677 keyword_BEGIN 00678 keyword_END 00679 keyword__LINE__ 00680 keyword__FILE__ 00681 keyword__ENCODING__ 00682 00683 %token <val> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL 00684 %token <val> tINTEGER tFLOAT tSTRING_CONTENT tCHAR 00685 %token <val> tNTH_REF tBACK_REF 00686 %token <val> tREGEXP_END 00687 00688 %type <val> singleton strings string string1 xstring regexp 00689 %type <val> string_contents xstring_contents regexp_contents string_content 00690 %type <val> words qwords word_list qword_list word 00691 %type <val> literal numeric dsym cpath 00692 %type <val> top_compstmt top_stmts top_stmt 00693 %type <val> bodystmt compstmt stmts stmt expr arg primary command command_call method_call 00694 %type <val> expr_value arg_value primary_value 00695 %type <val> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure 00696 %type <val> args call_args opt_call_args 00697 %type <val> paren_args opt_paren_args 00698 %type <val> command_args aref_args opt_block_arg block_arg var_ref var_lhs 00699 %type <val> mrhs superclass block_call block_command 00700 %type <val> f_block_optarg f_block_opt 00701 %type <val> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs 00702 %type <val> assoc_list assocs assoc undef_list backref string_dvar for_var 00703 %type <val> block_param opt_block_param block_param_def f_opt 00704 %type <val> bv_decls opt_bv_decl bvar 00705 %type <val> lambda f_larglist lambda_body 00706 %type <val> brace_block cmd_brace_block do_block lhs none fitem 00707 %type <val> mlhs mlhs_head mlhs_basic mlhs_item mlhs_node mlhs_post mlhs_inner 00708 %type <val> fsym variable sym symbol operation operation2 operation3 00709 %type <val> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_bad_arg 00710 /* 00711 */ 00712 %type <val> program reswords then do dot_or_colon 00713 00714 %token tUPLUS /* unary+ */ 00715 %token tUMINUS /* unary- */ 00716 %token tPOW /* ** */ 00717 %token tCMP /* <=> */ 00718 %token tEQ /* == */ 00719 %token tEQQ /* === */ 00720 %token tNEQ /* != */ 00721 %token tGEQ /* >= */ 00722 %token tLEQ /* <= */ 00723 %token tANDOP tOROP /* && and || */ 00724 %token tMATCH tNMATCH /* =~ and !~ */ 00725 %token tDOT2 tDOT3 /* .. and ... */ 00726 %token tAREF tASET /* [] and []= */ 00727 %token tLSHFT tRSHFT /* << and >> */ 00728 %token tCOLON2 /* :: */ 00729 %token tCOLON3 /* :: at EXPR_BEG */ 00730 %token <val> tOP_ASGN /* +=, -= etc. */ 00731 %token tASSOC /* => */ 00732 %token tLPAREN /* ( */ 00733 %token tLPAREN_ARG /* ( */ 00734 %token tRPAREN /* ) */ 00735 %token tLBRACK /* [ */ 00736 %token tLBRACE /* { */ 00737 %token tLBRACE_ARG /* { */ 00738 %token tSTAR /* * */ 00739 %token tAMPER /* & */ 00740 %token tLAMBDA /* -> */ 00741 %token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG 00742 %token tSTRING_DBEG tSTRING_DVAR tSTRING_END tLAMBEG 00743 00744 /* 00745 * precedence table 00746 */ 00747 00748 %nonassoc tLOWEST 00749 %nonassoc tLBRACE_ARG 00750 00751 %nonassoc modifier_if modifier_unless modifier_while modifier_until 00752 %left keyword_or keyword_and 00753 %right keyword_not 00754 %nonassoc keyword_defined 00755 %right '=' tOP_ASGN 00756 %left modifier_rescue 00757 %right '?' ':' 00758 %nonassoc tDOT2 tDOT3 00759 %left tOROP 00760 %left tANDOP 00761 %nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH 00762 %left '>' tGEQ '<' tLEQ 00763 %left '|' '^' 00764 %left '&' 00765 %left tLSHFT tRSHFT 00766 %left '+' '-' 00767 %left '*' '/' '%' 00768 %right tUMINUS_NUM tUMINUS 00769 %right tPOW 00770 %right '!' '~' tUPLUS 00771 00772 %nonassoc idNULL 00773 %nonassoc idRespond_to 00774 %nonassoc idIFUNC 00775 %nonassoc idCFUNC 00776 %nonassoc id_core_set_method_alias 00777 %nonassoc id_core_set_variable_alias 00778 %nonassoc id_core_undef_method 00779 %nonassoc id_core_define_method 00780 %nonassoc id_core_define_singleton_method 00781 %nonassoc id_core_set_postexe 00782 00783 %token tLAST_TOKEN 00784 00785 %% 00786 program : { 00787 lex_state = EXPR_BEG; 00788 #if 0 00789 local_push(compile_for_eval || rb_parse_in_main()); 00790 #endif 00791 local_push(0); 00792 00793 } 00794 top_compstmt 00795 { 00796 #if 0 00797 if ($2 && !compile_for_eval) { 00798 /* last expression should not be void */ 00799 if (nd_type($2) != NODE_BLOCK) void_expr($2); 00800 else { 00801 NODE *node = $2; 00802 while (node->nd_next) { 00803 node = node->nd_next; 00804 } 00805 void_expr(node->nd_head); 00806 } 00807 } 00808 ruby_eval_tree = NEW_SCOPE(0, block_append(ruby_eval_tree, $2)); 00809 #endif 00810 $$ = $2; 00811 parser->result = dispatch1(program, $$); 00812 00813 local_pop(); 00814 } 00815 ; 00816 00817 top_compstmt : top_stmts opt_terms 00818 { 00819 #if 0 00820 void_stmts($1); 00821 fixup_nodes(&deferred_nodes); 00822 #endif 00823 00824 $$ = $1; 00825 } 00826 ; 00827 00828 top_stmts : none 00829 { 00830 #if 0 00831 $$ = NEW_BEGIN(0); 00832 #endif 00833 $$ = dispatch2(stmts_add, dispatch0(stmts_new), 00834 dispatch0(void_stmt)); 00835 00836 } 00837 | top_stmt 00838 { 00839 #if 0 00840 $$ = newline_node($1); 00841 #endif 00842 $$ = dispatch2(stmts_add, dispatch0(stmts_new), $1); 00843 00844 } 00845 | top_stmts terms top_stmt 00846 { 00847 #if 0 00848 $$ = block_append($1, newline_node($3)); 00849 #endif 00850 $$ = dispatch2(stmts_add, $1, $3); 00851 00852 } 00853 | error top_stmt 00854 { 00855 $$ = remove_begin($2); 00856 } 00857 ; 00858 00859 top_stmt : stmt 00860 | keyword_BEGIN 00861 { 00862 if (in_def || in_single) { 00863 yyerror("BEGIN in method"); 00864 } 00865 #if 0 00866 /* local_push(0); */ 00867 #endif 00868 00869 } 00870 '{' top_compstmt '}' 00871 { 00872 #if 0 00873 ruby_eval_tree_begin = block_append(ruby_eval_tree_begin, 00874 $4); 00875 /* NEW_PREEXE($4)); */ 00876 /* local_pop(); */ 00877 $$ = NEW_BEGIN(0); 00878 #endif 00879 $$ = dispatch1(BEGIN, $4); 00880 00881 } 00882 ; 00883 00884 bodystmt : compstmt 00885 opt_rescue 00886 opt_else 00887 opt_ensure 00888 { 00889 #if 0 00890 $$ = $1; 00891 if ($2) { 00892 $$ = NEW_RESCUE($1, $2, $3); 00893 } 00894 else if ($3) { 00895 rb_warn0("else without rescue is useless"); 00896 $$ = block_append($$, $3); 00897 } 00898 if ($4) { 00899 if ($$) { 00900 $$ = NEW_ENSURE($$, $4); 00901 } 00902 else { 00903 $$ = block_append($4, NEW_NIL()); 00904 } 00905 } 00906 fixpos($$, $1); 00907 #endif 00908 $$ = dispatch4(bodystmt, 00909 escape_Qundef($1), 00910 escape_Qundef($2), 00911 escape_Qundef($3), 00912 escape_Qundef($4)); 00913 00914 } 00915 ; 00916 00917 compstmt : stmts opt_terms 00918 { 00919 #if 0 00920 void_stmts($1); 00921 fixup_nodes(&deferred_nodes); 00922 #endif 00923 00924 $$ = $1; 00925 } 00926 ; 00927 00928 stmts : none 00929 { 00930 #if 0 00931 $$ = NEW_BEGIN(0); 00932 #endif 00933 $$ = dispatch2(stmts_add, dispatch0(stmts_new), 00934 dispatch0(void_stmt)); 00935 00936 } 00937 | stmt 00938 { 00939 #if 0 00940 $$ = newline_node($1); 00941 #endif 00942 $$ = dispatch2(stmts_add, dispatch0(stmts_new), $1); 00943 00944 } 00945 | stmts terms stmt 00946 { 00947 #if 0 00948 $$ = block_append($1, newline_node($3)); 00949 #endif 00950 $$ = dispatch2(stmts_add, $1, $3); 00951 00952 } 00953 | error stmt 00954 { 00955 $$ = remove_begin($2); 00956 } 00957 ; 00958 00959 stmt : keyword_alias fitem {lex_state = EXPR_FNAME;} fitem 00960 { 00961 #if 0 00962 $$ = NEW_ALIAS($2, $4); 00963 #endif 00964 $$ = dispatch2(alias, $2, $4); 00965 00966 } 00967 | keyword_alias tGVAR tGVAR 00968 { 00969 #if 0 00970 $$ = NEW_VALIAS($2, $3); 00971 #endif 00972 $$ = dispatch2(var_alias, $2, $3); 00973 00974 } 00975 | keyword_alias tGVAR tBACK_REF 00976 { 00977 #if 0 00978 char buf[2]; 00979 buf[0] = '$'; 00980 buf[1] = (char)$3->nd_nth; 00981 $$ = NEW_VALIAS($2, rb_intern2(buf, 2)); 00982 #endif 00983 $$ = dispatch2(var_alias, $2, $3); 00984 00985 } 00986 | keyword_alias tGVAR tNTH_REF 00987 { 00988 #if 0 00989 yyerror("can't make alias for the number variables"); 00990 $$ = NEW_BEGIN(0); 00991 #endif 00992 $$ = dispatch2(var_alias, $2, $3); 00993 $$ = dispatch1(alias_error, $$); 00994 00995 } 00996 | keyword_undef undef_list 00997 { 00998 #if 0 00999 $$ = $2; 01000 #endif 01001 $$ = dispatch1(undef, $2); 01002 01003 } 01004 | stmt modifier_if expr_value 01005 { 01006 #if 0 01007 $$ = NEW_IF(cond($3), remove_begin($1), 0); 01008 fixpos($$, $3); 01009 #endif 01010 $$ = dispatch2(if_mod, $3, $1); 01011 01012 } 01013 | stmt modifier_unless expr_value 01014 { 01015 #if 0 01016 $$ = NEW_UNLESS(cond($3), remove_begin($1), 0); 01017 fixpos($$, $3); 01018 #endif 01019 $$ = dispatch2(unless_mod, $3, $1); 01020 01021 } 01022 | stmt modifier_while expr_value 01023 { 01024 #if 0 01025 if ($1 && nd_type($1) == NODE_BEGIN) { 01026 $$ = NEW_WHILE(cond($3), $1->nd_body, 0); 01027 } 01028 else { 01029 $$ = NEW_WHILE(cond($3), $1, 1); 01030 } 01031 #endif 01032 $$ = dispatch2(while_mod, $3, $1); 01033 01034 } 01035 | stmt modifier_until expr_value 01036 { 01037 #if 0 01038 if ($1 && nd_type($1) == NODE_BEGIN) { 01039 $$ = NEW_UNTIL(cond($3), $1->nd_body, 0); 01040 } 01041 else { 01042 $$ = NEW_UNTIL(cond($3), $1, 1); 01043 } 01044 #endif 01045 $$ = dispatch2(until_mod, $3, $1); 01046 01047 } 01048 | stmt modifier_rescue stmt 01049 { 01050 #if 0 01051 NODE *resq = NEW_RESBODY(0, remove_begin($3), 0); 01052 $$ = NEW_RESCUE(remove_begin($1), resq, 0); 01053 #endif 01054 $$ = dispatch2(rescue_mod, $3, $1); 01055 01056 } 01057 | keyword_END '{' compstmt '}' 01058 { 01059 if (in_def || in_single) { 01060 rb_warn0("END in method; use at_exit"); 01061 } 01062 #if 0 01063 $$ = NEW_POSTEXE(NEW_NODE( 01064 NODE_SCOPE, 0 /* tbl */, $3 /* body */, 0 /* args */)); 01065 #endif 01066 $$ = dispatch1(END, $3); 01067 01068 } 01069 | lhs '=' command_call 01070 { 01071 #if 0 01072 value_expr($3); 01073 $$ = node_assign($1, $3); 01074 #endif 01075 $$ = dispatch2(assign, $1, $3); 01076 01077 } 01078 | mlhs '=' command_call 01079 { 01080 #if 0 01081 value_expr($3); 01082 $1->nd_value = $3; 01083 $$ = $1; 01084 #endif 01085 $$ = dispatch2(massign, $1, $3); 01086 01087 } 01088 | var_lhs tOP_ASGN command_call 01089 { 01090 #if 0 01091 value_expr($3); 01092 if ($1) { 01093 ID vid = $1->nd_vid; 01094 if ($2 == tOROP) { 01095 $1->nd_value = $3; 01096 $$ = NEW_OP_ASGN_OR(gettable(vid), $1); 01097 if (is_asgn_or_id(vid)) { 01098 $$->nd_aid = vid; 01099 } 01100 } 01101 else if ($2 == tANDOP) { 01102 $1->nd_value = $3; 01103 $$ = NEW_OP_ASGN_AND(gettable(vid), $1); 01104 } 01105 else { 01106 $$ = $1; 01107 $$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3)); 01108 } 01109 } 01110 else { 01111 $$ = NEW_BEGIN(0); 01112 } 01113 #endif 01114 $$ = dispatch3(opassign, $1, $2, $3); 01115 01116 } 01117 | primary_value '[' opt_call_args rbracket tOP_ASGN command_call 01118 { 01119 #if 0 01120 NODE *args; 01121 01122 value_expr($6); 01123 if (!$3) $3 = NEW_ZARRAY(); 01124 args = arg_concat($3, $6); 01125 if ($5 == tOROP) { 01126 $5 = 0; 01127 } 01128 else if ($5 == tANDOP) { 01129 $5 = 1; 01130 } 01131 $$ = NEW_OP_ASGN1($1, $5, args); 01132 fixpos($$, $1); 01133 #endif 01134 $$ = dispatch2(aref_field, $1, escape_Qundef($3)); 01135 $$ = dispatch3(opassign, $$, $5, $6); 01136 01137 } 01138 | primary_value '.' tIDENTIFIER tOP_ASGN command_call 01139 { 01140 #if 0 01141 value_expr($5); 01142 if ($4 == tOROP) { 01143 $4 = 0; 01144 } 01145 else if ($4 == tANDOP) { 01146 $4 = 1; 01147 } 01148 $$ = NEW_OP_ASGN2($1, $3, $4, $5); 01149 fixpos($$, $1); 01150 #endif 01151 $$ = dispatch3(field, $1, ripper_id2sym('.'), $3); 01152 $$ = dispatch3(opassign, $$, $4, $5); 01153 01154 } 01155 | primary_value '.' tCONSTANT tOP_ASGN command_call 01156 { 01157 #if 0 01158 value_expr($5); 01159 if ($4 == tOROP) { 01160 $4 = 0; 01161 } 01162 else if ($4 == tANDOP) { 01163 $4 = 1; 01164 } 01165 $$ = NEW_OP_ASGN2($1, $3, $4, $5); 01166 fixpos($$, $1); 01167 #endif 01168 $$ = dispatch3(field, $1, ripper_id2sym('.'), $3); 01169 $$ = dispatch3(opassign, $$, $4, $5); 01170 01171 } 01172 | primary_value tCOLON2 tCONSTANT tOP_ASGN command_call 01173 { 01174 #if 0 01175 yyerror("constant re-assignment"); 01176 $$ = 0; 01177 #endif 01178 $$ = dispatch2(const_path_field, $1, $3); 01179 $$ = dispatch3(opassign, $$, $4, $5); 01180 $$ = dispatch1(assign_error, $$); 01181 01182 } 01183 | primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call 01184 { 01185 #if 0 01186 value_expr($5); 01187 if ($4 == tOROP) { 01188 $4 = 0; 01189 } 01190 else if ($4 == tANDOP) { 01191 $4 = 1; 01192 } 01193 $$ = NEW_OP_ASGN2($1, $3, $4, $5); 01194 fixpos($$, $1); 01195 #endif 01196 $$ = dispatch3(field, $1, ripper_intern("::"), $3); 01197 $$ = dispatch3(opassign, $$, $4, $5); 01198 01199 } 01200 | backref tOP_ASGN command_call 01201 { 01202 #if 0 01203 rb_backref_error($1); 01204 $$ = NEW_BEGIN(0); 01205 #endif 01206 $$ = dispatch2(assign, dispatch1(var_field, $1), $3); 01207 $$ = dispatch1(assign_error, $$); 01208 01209 } 01210 | lhs '=' mrhs 01211 { 01212 #if 0 01213 value_expr($3); 01214 $$ = node_assign($1, $3); 01215 #endif 01216 $$ = dispatch2(assign, $1, $3); 01217 01218 } 01219 | mlhs '=' arg_value 01220 { 01221 #if 0 01222 $1->nd_value = $3; 01223 $$ = $1; 01224 #endif 01225 $$ = dispatch2(massign, $1, $3); 01226 01227 } 01228 | mlhs '=' mrhs 01229 { 01230 #if 0 01231 $1->nd_value = $3; 01232 $$ = $1; 01233 #endif 01234 $$ = dispatch2(massign, $1, $3); 01235 01236 } 01237 | expr 01238 ; 01239 01240 expr : command_call 01241 | expr keyword_and expr 01242 { 01243 #if 0 01244 $$ = logop(NODE_AND, $1, $3); 01245 #endif 01246 $$ = dispatch3(binary, $1, ripper_intern("and"), $3); 01247 01248 } 01249 | expr keyword_or expr 01250 { 01251 #if 0 01252 $$ = logop(NODE_OR, $1, $3); 01253 #endif 01254 $$ = dispatch3(binary, $1, ripper_intern("or"), $3); 01255 01256 } 01257 | keyword_not opt_nl expr 01258 { 01259 #if 0 01260 $$ = call_uni_op(cond($3), '!'); 01261 #endif 01262 $$ = dispatch2(unary, ripper_intern("not"), $3); 01263 01264 } 01265 | '!' command_call 01266 { 01267 #if 0 01268 $$ = call_uni_op(cond($2), '!'); 01269 #endif 01270 $$ = dispatch2(unary, ripper_id2sym('!'), $2); 01271 01272 } 01273 | arg 01274 ; 01275 01276 expr_value : expr 01277 { 01278 #if 0 01279 value_expr($1); 01280 $$ = $1; 01281 if (!$$) $$ = NEW_NIL(); 01282 #endif 01283 $$ = $1; 01284 01285 } 01286 ; 01287 01288 command_call : command 01289 | block_command 01290 ; 01291 01292 block_command : block_call 01293 | block_call '.' operation2 command_args 01294 { 01295 #if 0 01296 $$ = NEW_CALL($1, $3, $4); 01297 #endif 01298 $$ = dispatch3(call, $1, ripper_id2sym('.'), $3); 01299 $$ = method_arg($$, $4); 01300 01301 } 01302 | block_call tCOLON2 operation2 command_args 01303 { 01304 #if 0 01305 $$ = NEW_CALL($1, $3, $4); 01306 #endif 01307 $$ = dispatch3(call, $1, ripper_intern("::"), $3); 01308 $$ = method_arg($$, $4); 01309 01310 } 01311 ; 01312 01313 cmd_brace_block : tLBRACE_ARG 01314 { 01315 $<vars>1 = dyna_push(); 01316 #if 0 01317 $<num>$ = ruby_sourceline; 01318 #endif 01319 01320 } 01321 opt_block_param 01322 compstmt 01323 '}' 01324 { 01325 #if 0 01326 $$ = NEW_ITER($3,$4); 01327 nd_set_line($$, $<num>2); 01328 #endif 01329 $$ = dispatch2(brace_block, escape_Qundef($3), $4); 01330 01331 dyna_pop($<vars>1); 01332 } 01333 ; 01334 01335 command : operation command_args %prec tLOWEST 01336 { 01337 #if 0 01338 $$ = NEW_FCALL($1, $2); 01339 fixpos($$, $2); 01340 #endif 01341 $$ = dispatch2(command, $1, $2); 01342 01343 } 01344 | operation command_args cmd_brace_block 01345 { 01346 #if 0 01347 block_dup_check($2,$3); 01348 $3->nd_iter = NEW_FCALL($1, $2); 01349 $$ = $3; 01350 fixpos($$, $2); 01351 #endif 01352 $$ = dispatch2(command, $1, $2); 01353 $$ = method_add_block($$, $3); 01354 01355 } 01356 | primary_value '.' operation2 command_args %prec tLOWEST 01357 { 01358 #if 0 01359 $$ = NEW_CALL($1, $3, $4); 01360 fixpos($$, $1); 01361 #endif 01362 $$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4); 01363 01364 } 01365 | primary_value '.' operation2 command_args cmd_brace_block 01366 { 01367 #if 0 01368 block_dup_check($4,$5); 01369 $5->nd_iter = NEW_CALL($1, $3, $4); 01370 $$ = $5; 01371 fixpos($$, $1); 01372 #endif 01373 $$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4); 01374 $$ = method_add_block($$, $5); 01375 01376 } 01377 | primary_value tCOLON2 operation2 command_args %prec tLOWEST 01378 { 01379 #if 0 01380 $$ = NEW_CALL($1, $3, $4); 01381 fixpos($$, $1); 01382 #endif 01383 $$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4); 01384 01385 } 01386 | primary_value tCOLON2 operation2 command_args cmd_brace_block 01387 { 01388 #if 0 01389 block_dup_check($4,$5); 01390 $5->nd_iter = NEW_CALL($1, $3, $4); 01391 $$ = $5; 01392 fixpos($$, $1); 01393 #endif 01394 $$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4); 01395 $$ = method_add_block($$, $5); 01396 01397 } 01398 | keyword_super command_args 01399 { 01400 #if 0 01401 $$ = NEW_SUPER($2); 01402 fixpos($$, $2); 01403 #endif 01404 $$ = dispatch1(super, $2); 01405 01406 } 01407 | keyword_yield command_args 01408 { 01409 #if 0 01410 $$ = new_yield($2); 01411 fixpos($$, $2); 01412 #endif 01413 $$ = dispatch1(yield, $2); 01414 01415 } 01416 | keyword_return call_args 01417 { 01418 #if 0 01419 $$ = NEW_RETURN(ret_args($2)); 01420 #endif 01421 $$ = dispatch1(return, $2); 01422 01423 } 01424 | keyword_break call_args 01425 { 01426 #if 0 01427 $$ = NEW_BREAK(ret_args($2)); 01428 #endif 01429 $$ = dispatch1(break, $2); 01430 01431 } 01432 | keyword_next call_args 01433 { 01434 #if 0 01435 $$ = NEW_NEXT(ret_args($2)); 01436 #endif 01437 $$ = dispatch1(next, $2); 01438 01439 } 01440 ; 01441 01442 mlhs : mlhs_basic 01443 | tLPAREN mlhs_inner rparen 01444 { 01445 #if 0 01446 $$ = $2; 01447 #endif 01448 $$ = dispatch1(mlhs_paren, $2); 01449 01450 } 01451 ; 01452 01453 mlhs_inner : mlhs_basic 01454 | tLPAREN mlhs_inner rparen 01455 { 01456 #if 0 01457 $$ = NEW_MASGN(NEW_LIST($2), 0); 01458 #endif 01459 $$ = dispatch1(mlhs_paren, $2); 01460 01461 } 01462 ; 01463 01464 mlhs_basic : mlhs_head 01465 { 01466 #if 0 01467 $$ = NEW_MASGN($1, 0); 01468 #endif 01469 $$ = $1; 01470 01471 } 01472 | mlhs_head mlhs_item 01473 { 01474 #if 0 01475 $$ = NEW_MASGN(list_append($1,$2), 0); 01476 #endif 01477 $$ = mlhs_add($1, $2); 01478 01479 } 01480 | mlhs_head tSTAR mlhs_node 01481 { 01482 #if 0 01483 $$ = NEW_MASGN($1, $3); 01484 #endif 01485 $$ = mlhs_add_star($1, $3); 01486 01487 } 01488 | mlhs_head tSTAR mlhs_node ',' mlhs_post 01489 { 01490 #if 0 01491 $$ = NEW_MASGN($1, NEW_POSTARG($3,$5)); 01492 #endif 01493 $1 = mlhs_add_star($1, $3); 01494 $$ = mlhs_add($1, $5); 01495 01496 } 01497 | mlhs_head tSTAR 01498 { 01499 #if 0 01500 $$ = NEW_MASGN($1, -1); 01501 #endif 01502 $$ = mlhs_add_star($1, Qnil); 01503 01504 } 01505 | mlhs_head tSTAR ',' mlhs_post 01506 { 01507 #if 0 01508 $$ = NEW_MASGN($1, NEW_POSTARG(-1, $4)); 01509 #endif 01510 $$ = mlhs_add_star($1, Qnil); 01511 01512 } 01513 | tSTAR mlhs_node 01514 { 01515 #if 0 01516 $$ = NEW_MASGN(0, $2); 01517 #endif 01518 $$ = mlhs_add_star(mlhs_new(), $2); 01519 01520 } 01521 | tSTAR mlhs_node ',' mlhs_post 01522 { 01523 #if 0 01524 $$ = NEW_MASGN(0, NEW_POSTARG($2,$4)); 01525 #endif 01526 $$ = mlhs_add_star(mlhs_new(), $2); 01527 01528 } 01529 | tSTAR 01530 { 01531 #if 0 01532 $$ = NEW_MASGN(0, -1); 01533 #endif 01534 $$ = mlhs_add_star(mlhs_new(), Qnil); 01535 01536 } 01537 | tSTAR ',' mlhs_post 01538 { 01539 #if 0 01540 $$ = NEW_MASGN(0, NEW_POSTARG(-1, $3)); 01541 #endif 01542 $$ = mlhs_add_star(mlhs_new(), Qnil); 01543 01544 } 01545 ; 01546 01547 mlhs_item : mlhs_node 01548 | tLPAREN mlhs_inner rparen 01549 { 01550 #if 0 01551 $$ = $2; 01552 #endif 01553 $$ = dispatch1(mlhs_paren, $2); 01554 01555 } 01556 ; 01557 01558 mlhs_head : mlhs_item ',' 01559 { 01560 #if 0 01561 $$ = NEW_LIST($1); 01562 #endif 01563 $$ = mlhs_add(mlhs_new(), $1); 01564 01565 } 01566 | mlhs_head mlhs_item ',' 01567 { 01568 #if 0 01569 $$ = list_append($1, $2); 01570 #endif 01571 $$ = mlhs_add($1, $2); 01572 01573 } 01574 ; 01575 01576 mlhs_post : mlhs_item 01577 { 01578 #if 0 01579 $$ = NEW_LIST($1); 01580 #endif 01581 $$ = mlhs_add(mlhs_new(), $1); 01582 01583 } 01584 | mlhs_post ',' mlhs_item 01585 { 01586 #if 0 01587 $$ = list_append($1, $3); 01588 #endif 01589 $$ = mlhs_add($1, $3); 01590 01591 } 01592 ; 01593 01594 mlhs_node : variable 01595 { 01596 $$ = assignable($1, 0); 01597 } 01598 | primary_value '[' opt_call_args rbracket 01599 { 01600 #if 0 01601 $$ = aryset($1, $3); 01602 #endif 01603 $$ = dispatch2(aref_field, $1, escape_Qundef($3)); 01604 01605 } 01606 | primary_value '.' tIDENTIFIER 01607 { 01608 #if 0 01609 $$ = attrset($1, $3); 01610 #endif 01611 $$ = dispatch3(field, $1, ripper_id2sym('.'), $3); 01612 01613 } 01614 | primary_value tCOLON2 tIDENTIFIER 01615 { 01616 #if 0 01617 $$ = attrset($1, $3); 01618 #endif 01619 $$ = dispatch2(const_path_field, $1, $3); 01620 01621 } 01622 | primary_value '.' tCONSTANT 01623 { 01624 #if 0 01625 $$ = attrset($1, $3); 01626 #endif 01627 $$ = dispatch3(field, $1, ripper_id2sym('.'), $3); 01628 01629 } 01630 | primary_value tCOLON2 tCONSTANT 01631 { 01632 #if 0 01633 if (in_def || in_single) 01634 yyerror("dynamic constant assignment"); 01635 $$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3)); 01636 #endif 01637 if (in_def || in_single) 01638 yyerror("dynamic constant assignment"); 01639 $$ = dispatch2(const_path_field, $1, $3); 01640 01641 } 01642 | tCOLON3 tCONSTANT 01643 { 01644 #if 0 01645 if (in_def || in_single) 01646 yyerror("dynamic constant assignment"); 01647 $$ = NEW_CDECL(0, 0, NEW_COLON3($2)); 01648 #endif 01649 $$ = dispatch1(top_const_field, $2); 01650 01651 } 01652 | backref 01653 { 01654 #if 0 01655 rb_backref_error($1); 01656 $$ = NEW_BEGIN(0); 01657 #endif 01658 $$ = dispatch1(var_field, $1); 01659 $$ = dispatch1(assign_error, $$); 01660 01661 } 01662 ; 01663 01664 lhs : variable 01665 { 01666 $$ = assignable($1, 0); 01667 #if 0 01668 if (!$$) $$ = NEW_BEGIN(0); 01669 #endif 01670 $$ = dispatch1(var_field, $$); 01671 01672 } 01673 | primary_value '[' opt_call_args rbracket 01674 { 01675 #if 0 01676 $$ = aryset($1, $3); 01677 #endif 01678 $$ = dispatch2(aref_field, $1, escape_Qundef($3)); 01679 01680 } 01681 | primary_value '.' tIDENTIFIER 01682 { 01683 #if 0 01684 $$ = attrset($1, $3); 01685 #endif 01686 $$ = dispatch3(field, $1, ripper_id2sym('.'), $3); 01687 01688 } 01689 | primary_value tCOLON2 tIDENTIFIER 01690 { 01691 #if 0 01692 $$ = attrset($1, $3); 01693 #endif 01694 $$ = dispatch3(field, $1, ripper_intern("::"), $3); 01695 01696 } 01697 | primary_value '.' tCONSTANT 01698 { 01699 #if 0 01700 $$ = attrset($1, $3); 01701 #endif 01702 $$ = dispatch3(field, $1, ripper_id2sym('.'), $3); 01703 01704 } 01705 | primary_value tCOLON2 tCONSTANT 01706 { 01707 #if 0 01708 if (in_def || in_single) 01709 yyerror("dynamic constant assignment"); 01710 $$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3)); 01711 #endif 01712 $$ = dispatch2(const_path_field, $1, $3); 01713 if (in_def || in_single) { 01714 $$ = dispatch1(assign_error, $$); 01715 } 01716 01717 } 01718 | tCOLON3 tCONSTANT 01719 { 01720 #if 0 01721 if (in_def || in_single) 01722 yyerror("dynamic constant assignment"); 01723 $$ = NEW_CDECL(0, 0, NEW_COLON3($2)); 01724 #endif 01725 $$ = dispatch1(top_const_field, $2); 01726 if (in_def || in_single) { 01727 $$ = dispatch1(assign_error, $$); 01728 } 01729 01730 } 01731 | backref 01732 { 01733 #if 0 01734 rb_backref_error($1); 01735 $$ = NEW_BEGIN(0); 01736 #endif 01737 $$ = dispatch1(assign_error, $1); 01738 01739 } 01740 ; 01741 01742 cname : tIDENTIFIER 01743 { 01744 #if 0 01745 yyerror("class/module name must be CONSTANT"); 01746 #endif 01747 $$ = dispatch1(class_name_error, $1); 01748 01749 } 01750 | tCONSTANT 01751 ; 01752 01753 cpath : tCOLON3 cname 01754 { 01755 #if 0 01756 $$ = NEW_COLON3($2); 01757 #endif 01758 $$ = dispatch1(top_const_ref, $2); 01759 01760 } 01761 | cname 01762 { 01763 #if 0 01764 $$ = NEW_COLON2(0, $$); 01765 #endif 01766 $$ = dispatch1(const_ref, $1); 01767 01768 } 01769 | primary_value tCOLON2 cname 01770 { 01771 #if 0 01772 $$ = NEW_COLON2($1, $3); 01773 #endif 01774 $$ = dispatch2(const_path_ref, $1, $3); 01775 01776 } 01777 ; 01778 01779 fname : tIDENTIFIER 01780 | tCONSTANT 01781 | tFID 01782 | op 01783 { 01784 lex_state = EXPR_ENDFN; 01785 $$ = $1; 01786 } 01787 | reswords 01788 { 01789 lex_state = EXPR_ENDFN; 01790 #if 0 01791 $$ = $<id>1; 01792 #endif 01793 $$ = $1; 01794 01795 } 01796 ; 01797 01798 fsym : fname 01799 | symbol 01800 ; 01801 01802 fitem : fsym 01803 { 01804 #if 0 01805 $$ = NEW_LIT(ID2SYM($1)); 01806 #endif 01807 $$ = dispatch1(symbol_literal, $1); 01808 01809 } 01810 | dsym 01811 ; 01812 01813 undef_list : fitem 01814 { 01815 #if 0 01816 $$ = NEW_UNDEF($1); 01817 #endif 01818 $$ = rb_ary_new3(1, $1); 01819 01820 } 01821 | undef_list ',' {lex_state = EXPR_FNAME;} fitem 01822 { 01823 #if 0 01824 $$ = block_append($1, NEW_UNDEF($4)); 01825 #endif 01826 rb_ary_push($1, $4); 01827 01828 } 01829 ; 01830 01831 op : '|' { ifndef_ripper($$ = '|'); } 01832 | '^' { ifndef_ripper($$ = '^'); } 01833 | '&' { ifndef_ripper($$ = '&'); } 01834 | tCMP { ifndef_ripper($$ = tCMP); } 01835 | tEQ { ifndef_ripper($$ = tEQ); } 01836 | tEQQ { ifndef_ripper($$ = tEQQ); } 01837 | tMATCH { ifndef_ripper($$ = tMATCH); } 01838 | tNMATCH { ifndef_ripper($$ = tNMATCH); } 01839 | '>' { ifndef_ripper($$ = '>'); } 01840 | tGEQ { ifndef_ripper($$ = tGEQ); } 01841 | '<' { ifndef_ripper($$ = '<'); } 01842 | tLEQ { ifndef_ripper($$ = tLEQ); } 01843 | tNEQ { ifndef_ripper($$ = tNEQ); } 01844 | tLSHFT { ifndef_ripper($$ = tLSHFT); } 01845 | tRSHFT { ifndef_ripper($$ = tRSHFT); } 01846 | '+' { ifndef_ripper($$ = '+'); } 01847 | '-' { ifndef_ripper($$ = '-'); } 01848 | '*' { ifndef_ripper($$ = '*'); } 01849 | tSTAR { ifndef_ripper($$ = '*'); } 01850 | '/' { ifndef_ripper($$ = '/'); } 01851 | '%' { ifndef_ripper($$ = '%'); } 01852 | tPOW { ifndef_ripper($$ = tPOW); } 01853 | '!' { ifndef_ripper($$ = '!'); } 01854 | '~' { ifndef_ripper($$ = '~'); } 01855 | tUPLUS { ifndef_ripper($$ = tUPLUS); } 01856 | tUMINUS { ifndef_ripper($$ = tUMINUS); } 01857 | tAREF { ifndef_ripper($$ = tAREF); } 01858 | tASET { ifndef_ripper($$ = tASET); } 01859 | '`' { ifndef_ripper($$ = '`'); } 01860 ; 01861 01862 reswords : keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__ 01863 | keyword_BEGIN | keyword_END 01864 | keyword_alias | keyword_and | keyword_begin 01865 | keyword_break | keyword_case | keyword_class | keyword_def 01866 | keyword_defined | keyword_do | keyword_else | keyword_elsif 01867 | keyword_end | keyword_ensure | keyword_false 01868 | keyword_for | keyword_in | keyword_module | keyword_next 01869 | keyword_nil | keyword_not | keyword_or | keyword_redo 01870 | keyword_rescue | keyword_retry | keyword_return | keyword_self 01871 | keyword_super | keyword_then | keyword_true | keyword_undef 01872 | keyword_when | keyword_yield | keyword_if | keyword_unless 01873 | keyword_while | keyword_until 01874 ; 01875 01876 arg : lhs '=' arg 01877 { 01878 #if 0 01879 value_expr($3); 01880 $$ = node_assign($1, $3); 01881 #endif 01882 $$ = dispatch2(assign, $1, $3); 01883 01884 } 01885 | lhs '=' arg modifier_rescue arg 01886 { 01887 #if 0 01888 value_expr($3); 01889 $3 = NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0); 01890 $$ = node_assign($1, $3); 01891 #endif 01892 $$ = dispatch2(assign, $1, dispatch2(rescue_mod, $3, $5)); 01893 01894 } 01895 | var_lhs tOP_ASGN arg 01896 { 01897 #if 0 01898 value_expr($3); 01899 if ($1) { 01900 ID vid = $1->nd_vid; 01901 if ($2 == tOROP) { 01902 $1->nd_value = $3; 01903 $$ = NEW_OP_ASGN_OR(gettable(vid), $1); 01904 if (is_asgn_or_id(vid)) { 01905 $$->nd_aid = vid; 01906 } 01907 } 01908 else if ($2 == tANDOP) { 01909 $1->nd_value = $3; 01910 $$ = NEW_OP_ASGN_AND(gettable(vid), $1); 01911 } 01912 else { 01913 $$ = $1; 01914 $$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3)); 01915 } 01916 } 01917 else { 01918 $$ = NEW_BEGIN(0); 01919 } 01920 #endif 01921 $$ = dispatch3(opassign, $1, $2, $3); 01922 01923 } 01924 | var_lhs tOP_ASGN arg modifier_rescue arg 01925 { 01926 #if 0 01927 value_expr($3); 01928 $3 = NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0); 01929 if ($1) { 01930 ID vid = $1->nd_vid; 01931 if ($2 == tOROP) { 01932 $1->nd_value = $3; 01933 $$ = NEW_OP_ASGN_OR(gettable(vid), $1); 01934 if (is_asgn_or_id(vid)) { 01935 $$->nd_aid = vid; 01936 } 01937 } 01938 else if ($2 == tANDOP) { 01939 $1->nd_value = $3; 01940 $$ = NEW_OP_ASGN_AND(gettable(vid), $1); 01941 } 01942 else { 01943 $$ = $1; 01944 $$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3)); 01945 } 01946 } 01947 else { 01948 $$ = NEW_BEGIN(0); 01949 } 01950 #endif 01951 $3 = dispatch2(rescue_mod, $3, $5); 01952 $$ = dispatch3(opassign, $1, $2, $3); 01953 01954 } 01955 | primary_value '[' opt_call_args rbracket tOP_ASGN arg 01956 { 01957 #if 0 01958 NODE *args; 01959 01960 value_expr($6); 01961 if (!$3) $3 = NEW_ZARRAY(); 01962 if (nd_type($3) == NODE_BLOCK_PASS) { 01963 args = NEW_ARGSCAT($3, $6); 01964 } 01965 else { 01966 args = arg_concat($3, $6); 01967 } 01968 if ($5 == tOROP) { 01969 $5 = 0; 01970 } 01971 else if ($5 == tANDOP) { 01972 $5 = 1; 01973 } 01974 $$ = NEW_OP_ASGN1($1, $5, args); 01975 fixpos($$, $1); 01976 #endif 01977 $1 = dispatch2(aref_field, $1, escape_Qundef($3)); 01978 $$ = dispatch3(opassign, $1, $5, $6); 01979 01980 } 01981 | primary_value '.' tIDENTIFIER tOP_ASGN arg 01982 { 01983 #if 0 01984 value_expr($5); 01985 if ($4 == tOROP) { 01986 $4 = 0; 01987 } 01988 else if ($4 == tANDOP) { 01989 $4 = 1; 01990 } 01991 $$ = NEW_OP_ASGN2($1, $3, $4, $5); 01992 fixpos($$, $1); 01993 #endif 01994 $1 = dispatch3(field, $1, ripper_id2sym('.'), $3); 01995 $$ = dispatch3(opassign, $1, $4, $5); 01996 01997 } 01998 | primary_value '.' tCONSTANT tOP_ASGN arg 01999 { 02000 #if 0 02001 value_expr($5); 02002 if ($4 == tOROP) { 02003 $4 = 0; 02004 } 02005 else if ($4 == tANDOP) { 02006 $4 = 1; 02007 } 02008 $$ = NEW_OP_ASGN2($1, $3, $4, $5); 02009 fixpos($$, $1); 02010 #endif 02011 $1 = dispatch3(field, $1, ripper_id2sym('.'), $3); 02012 $$ = dispatch3(opassign, $1, $4, $5); 02013 02014 } 02015 | primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg 02016 { 02017 #if 0 02018 value_expr($5); 02019 if ($4 == tOROP) { 02020 $4 = 0; 02021 } 02022 else if ($4 == tANDOP) { 02023 $4 = 1; 02024 } 02025 $$ = NEW_OP_ASGN2($1, $3, $4, $5); 02026 fixpos($$, $1); 02027 #endif 02028 $1 = dispatch3(field, $1, ripper_intern("::"), $3); 02029 $$ = dispatch3(opassign, $1, $4, $5); 02030 02031 } 02032 | primary_value tCOLON2 tCONSTANT tOP_ASGN arg 02033 { 02034 #if 0 02035 yyerror("constant re-assignment"); 02036 $$ = NEW_BEGIN(0); 02037 #endif 02038 $$ = dispatch2(const_path_field, $1, $3); 02039 $$ = dispatch3(opassign, $$, $4, $5); 02040 $$ = dispatch1(assign_error, $$); 02041 02042 } 02043 | tCOLON3 tCONSTANT tOP_ASGN arg 02044 { 02045 #if 0 02046 yyerror("constant re-assignment"); 02047 $$ = NEW_BEGIN(0); 02048 #endif 02049 $$ = dispatch1(top_const_field, $2); 02050 $$ = dispatch3(opassign, $$, $3, $4); 02051 $$ = dispatch1(assign_error, $$); 02052 02053 } 02054 | backref tOP_ASGN arg 02055 { 02056 #if 0 02057 rb_backref_error($1); 02058 $$ = NEW_BEGIN(0); 02059 #endif 02060 $$ = dispatch1(var_field, $1); 02061 $$ = dispatch3(opassign, $$, $2, $3); 02062 $$ = dispatch1(assign_error, $$); 02063 02064 } 02065 | arg tDOT2 arg 02066 { 02067 #if 0 02068 value_expr($1); 02069 value_expr($3); 02070 $$ = NEW_DOT2($1, $3); 02071 if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) && 02072 nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) { 02073 deferred_nodes = list_append(deferred_nodes, $$); 02074 } 02075 #endif 02076 $$ = dispatch2(dot2, $1, $3); 02077 02078 } 02079 | arg tDOT3 arg 02080 { 02081 #if 0 02082 value_expr($1); 02083 value_expr($3); 02084 $$ = NEW_DOT3($1, $3); 02085 if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) && 02086 nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) { 02087 deferred_nodes = list_append(deferred_nodes, $$); 02088 } 02089 #endif 02090 $$ = dispatch2(dot3, $1, $3); 02091 02092 } 02093 | arg '+' arg 02094 { 02095 #if 0 02096 $$ = call_bin_op($1, '+', $3); 02097 #endif 02098 $$ = dispatch3(binary, $1, ID2SYM('+'), $3); 02099 02100 } 02101 | arg '-' arg 02102 { 02103 #if 0 02104 $$ = call_bin_op($1, '-', $3); 02105 #endif 02106 $$ = dispatch3(binary, $1, ID2SYM('-'), $3); 02107 02108 } 02109 | arg '*' arg 02110 { 02111 #if 0 02112 $$ = call_bin_op($1, '*', $3); 02113 #endif 02114 $$ = dispatch3(binary, $1, ID2SYM('*'), $3); 02115 02116 } 02117 | arg '/' arg 02118 { 02119 #if 0 02120 $$ = call_bin_op($1, '/', $3); 02121 #endif 02122 $$ = dispatch3(binary, $1, ID2SYM('/'), $3); 02123 02124 } 02125 | arg '%' arg 02126 { 02127 #if 0 02128 $$ = call_bin_op($1, '%', $3); 02129 #endif 02130 $$ = dispatch3(binary, $1, ID2SYM('%'), $3); 02131 02132 } 02133 | arg tPOW arg 02134 { 02135 #if 0 02136 $$ = call_bin_op($1, tPOW, $3); 02137 #endif 02138 $$ = dispatch3(binary, $1, ripper_intern("**"), $3); 02139 02140 } 02141 | tUMINUS_NUM tINTEGER tPOW arg 02142 { 02143 #if 0 02144 $$ = NEW_CALL(call_bin_op($2, tPOW, $4), tUMINUS, 0); 02145 #endif 02146 $$ = dispatch3(binary, $2, ripper_intern("**"), $4); 02147 $$ = dispatch2(unary, ripper_intern("-@"), $$); 02148 02149 } 02150 | tUMINUS_NUM tFLOAT tPOW arg 02151 { 02152 #if 0 02153 $$ = NEW_CALL(call_bin_op($2, tPOW, $4), tUMINUS, 0); 02154 #endif 02155 $$ = dispatch3(binary, $2, ripper_intern("**"), $4); 02156 $$ = dispatch2(unary, ripper_intern("-@"), $$); 02157 02158 } 02159 | tUPLUS arg 02160 { 02161 #if 0 02162 $$ = call_uni_op($2, tUPLUS); 02163 #endif 02164 $$ = dispatch2(unary, ripper_intern("+@"), $2); 02165 02166 } 02167 | tUMINUS arg 02168 { 02169 #if 0 02170 $$ = call_uni_op($2, tUMINUS); 02171 #endif 02172 $$ = dispatch2(unary, ripper_intern("-@"), $2); 02173 02174 } 02175 | arg '|' arg 02176 { 02177 #if 0 02178 $$ = call_bin_op($1, '|', $3); 02179 #endif 02180 $$ = dispatch3(binary, $1, ID2SYM('|'), $3); 02181 02182 } 02183 | arg '^' arg 02184 { 02185 #if 0 02186 $$ = call_bin_op($1, '^', $3); 02187 #endif 02188 $$ = dispatch3(binary, $1, ID2SYM('^'), $3); 02189 02190 } 02191 | arg '&' arg 02192 { 02193 #if 0 02194 $$ = call_bin_op($1, '&', $3); 02195 #endif 02196 $$ = dispatch3(binary, $1, ID2SYM('&'), $3); 02197 02198 } 02199 | arg tCMP arg 02200 { 02201 #if 0 02202 $$ = call_bin_op($1, tCMP, $3); 02203 #endif 02204 $$ = dispatch3(binary, $1, ripper_intern("<=>"), $3); 02205 02206 } 02207 | arg '>' arg 02208 { 02209 #if 0 02210 $$ = call_bin_op($1, '>', $3); 02211 #endif 02212 $$ = dispatch3(binary, $1, ID2SYM('>'), $3); 02213 02214 } 02215 | arg tGEQ arg 02216 { 02217 #if 0 02218 $$ = call_bin_op($1, tGEQ, $3); 02219 #endif 02220 $$ = dispatch3(binary, $1, ripper_intern(">="), $3); 02221 02222 } 02223 | arg '<' arg 02224 { 02225 #if 0 02226 $$ = call_bin_op($1, '<', $3); 02227 #endif 02228 $$ = dispatch3(binary, $1, ID2SYM('<'), $3); 02229 02230 } 02231 | arg tLEQ arg 02232 { 02233 #if 0 02234 $$ = call_bin_op($1, tLEQ, $3); 02235 #endif 02236 $$ = dispatch3(binary, $1, ripper_intern("<="), $3); 02237 02238 } 02239 | arg tEQ arg 02240 { 02241 #if 0 02242 $$ = call_bin_op($1, tEQ, $3); 02243 #endif 02244 $$ = dispatch3(binary, $1, ripper_intern("=="), $3); 02245 02246 } 02247 | arg tEQQ arg 02248 { 02249 #if 0 02250 $$ = call_bin_op($1, tEQQ, $3); 02251 #endif 02252 $$ = dispatch3(binary, $1, ripper_intern("==="), $3); 02253 02254 } 02255 | arg tNEQ arg 02256 { 02257 #if 0 02258 $$ = call_bin_op($1, tNEQ, $3); 02259 #endif 02260 $$ = dispatch3(binary, $1, ripper_intern("!="), $3); 02261 02262 } 02263 | arg tMATCH arg 02264 { 02265 #if 0 02266 $$ = match_op($1, $3); 02267 if (nd_type($1) == NODE_LIT && TYPE($1->nd_lit) == T_REGEXP) { 02268 $$ = reg_named_capture_assign($1->nd_lit, $$); 02269 } 02270 #endif 02271 $$ = dispatch3(binary, $1, ripper_intern("=~"), $3); 02272 02273 } 02274 | arg tNMATCH arg 02275 { 02276 #if 0 02277 $$ = call_bin_op($1, tNMATCH, $3); 02278 #endif 02279 $$ = dispatch3(binary, $1, ripper_intern("!~"), $3); 02280 02281 } 02282 | '!' arg 02283 { 02284 #if 0 02285 $$ = call_uni_op(cond($2), '!'); 02286 #endif 02287 $$ = dispatch2(unary, ID2SYM('!'), $2); 02288 02289 } 02290 | '~' arg 02291 { 02292 #if 0 02293 $$ = call_uni_op($2, '~'); 02294 #endif 02295 $$ = dispatch2(unary, ID2SYM('~'), $2); 02296 02297 } 02298 | arg tLSHFT arg 02299 { 02300 #if 0 02301 $$ = call_bin_op($1, tLSHFT, $3); 02302 #endif 02303 $$ = dispatch3(binary, $1, ripper_intern("<<"), $3); 02304 02305 } 02306 | arg tRSHFT arg 02307 { 02308 #if 0 02309 $$ = call_bin_op($1, tRSHFT, $3); 02310 #endif 02311 $$ = dispatch3(binary, $1, ripper_intern(">>"), $3); 02312 02313 } 02314 | arg tANDOP arg 02315 { 02316 #if 0 02317 $$ = logop(NODE_AND, $1, $3); 02318 #endif 02319 $$ = dispatch3(binary, $1, ripper_intern("&&"), $3); 02320 02321 } 02322 | arg tOROP arg 02323 { 02324 #if 0 02325 $$ = logop(NODE_OR, $1, $3); 02326 #endif 02327 $$ = dispatch3(binary, $1, ripper_intern("||"), $3); 02328 02329 } 02330 | keyword_defined opt_nl {in_defined = 1;} arg 02331 { 02332 #if 0 02333 in_defined = 0; 02334 $$ = NEW_DEFINED($4); 02335 #endif 02336 in_defined = 0; 02337 $$ = dispatch1(defined, $4); 02338 02339 } 02340 | arg '?' arg opt_nl ':' arg 02341 { 02342 #if 0 02343 value_expr($1); 02344 $$ = NEW_IF(cond($1), $3, $6); 02345 fixpos($$, $1); 02346 #endif 02347 $$ = dispatch3(ifop, $1, $3, $6); 02348 02349 } 02350 | primary 02351 { 02352 $$ = $1; 02353 } 02354 ; 02355 02356 arg_value : arg 02357 { 02358 #if 0 02359 value_expr($1); 02360 $$ = $1; 02361 if (!$$) $$ = NEW_NIL(); 02362 #endif 02363 $$ = $1; 02364 02365 } 02366 ; 02367 02368 aref_args : none 02369 | args trailer 02370 { 02371 $$ = $1; 02372 } 02373 | args ',' assocs trailer 02374 { 02375 #if 0 02376 $$ = arg_append($1, NEW_HASH($3)); 02377 #endif 02378 $$ = arg_add_assocs($1, $3); 02379 02380 } 02381 | assocs trailer 02382 { 02383 #if 0 02384 $$ = NEW_LIST(NEW_HASH($1)); 02385 #endif 02386 $$ = arg_add_assocs(arg_new(), $1); 02387 02388 } 02389 ; 02390 02391 paren_args : '(' opt_call_args rparen 02392 { 02393 #if 0 02394 $$ = $2; 02395 #endif 02396 $$ = dispatch1(arg_paren, escape_Qundef($2)); 02397 02398 } 02399 ; 02400 02401 opt_paren_args : none 02402 | paren_args 02403 ; 02404 02405 opt_call_args : none 02406 | call_args 02407 ; 02408 02409 call_args : command 02410 { 02411 #if 0 02412 value_expr($1); 02413 $$ = NEW_LIST($1); 02414 #endif 02415 $$ = arg_add(arg_new(), $1); 02416 02417 } 02418 | args opt_block_arg 02419 { 02420 #if 0 02421 $$ = arg_blk_pass($1, $2); 02422 #endif 02423 $$ = arg_add_optblock($1, $2); 02424 02425 } 02426 | assocs opt_block_arg 02427 { 02428 #if 0 02429 $$ = NEW_LIST(NEW_HASH($1)); 02430 $$ = arg_blk_pass($$, $2); 02431 #endif 02432 $$ = arg_add_assocs(arg_new(), $1); 02433 $$ = arg_add_optblock($$, $2); 02434 02435 } 02436 | args ',' assocs opt_block_arg 02437 { 02438 #if 0 02439 $$ = arg_append($1, NEW_HASH($3)); 02440 $$ = arg_blk_pass($$, $4); 02441 #endif 02442 $$ = arg_add_optblock(arg_add_assocs($1, $3), $4); 02443 02444 } 02445 | block_arg 02446 /* 02447 */ 02448 { 02449 $$ = arg_add_block(arg_new(), $1); 02450 } 02451 02452 ; 02453 02454 command_args : { 02455 $<val>$ = cmdarg_stack; 02456 CMDARG_PUSH(1); 02457 } 02458 call_args 02459 { 02460 /* CMDARG_POP() */ 02461 cmdarg_stack = $<val>1; 02462 $$ = $2; 02463 } 02464 ; 02465 02466 block_arg : tAMPER arg_value 02467 { 02468 #if 0 02469 $$ = NEW_BLOCK_PASS($2); 02470 #endif 02471 $$ = $2; 02472 02473 } 02474 ; 02475 02476 opt_block_arg : ',' block_arg 02477 { 02478 $$ = $2; 02479 } 02480 | ',' 02481 { 02482 $$ = 0; 02483 } 02484 | none 02485 { 02486 $$ = 0; 02487 } 02488 ; 02489 02490 args : arg_value 02491 { 02492 #if 0 02493 $$ = NEW_LIST($1); 02494 #endif 02495 $$ = arg_add(arg_new(), $1); 02496 02497 } 02498 | tSTAR arg_value 02499 { 02500 #if 0 02501 $$ = NEW_SPLAT($2); 02502 #endif 02503 $$ = arg_add_star(arg_new(), $2); 02504 02505 } 02506 | args ',' arg_value 02507 { 02508 #if 0 02509 NODE *n1; 02510 if ((n1 = splat_array($1)) != 0) { 02511 $$ = list_append(n1, $3); 02512 } 02513 else { 02514 $$ = arg_append($1, $3); 02515 } 02516 #endif 02517 $$ = arg_add($1, $3); 02518 02519 } 02520 | args ',' tSTAR arg_value 02521 { 02522 #if 0 02523 NODE *n1; 02524 if ((nd_type($4) == NODE_ARRAY) && (n1 = splat_array($1)) != 0) { 02525 $$ = list_concat(n1, $4); 02526 } 02527 else { 02528 $$ = arg_concat($1, $4); 02529 } 02530 #endif 02531 $$ = arg_add_star($1, $4); 02532 02533 } 02534 ; 02535 02536 mrhs : args ',' arg_value 02537 { 02538 #if 0 02539 NODE *n1; 02540 if ((n1 = splat_array($1)) != 0) { 02541 $$ = list_append(n1, $3); 02542 } 02543 else { 02544 $$ = arg_append($1, $3); 02545 } 02546 #endif 02547 $$ = mrhs_add(args2mrhs($1), $3); 02548 02549 } 02550 | args ',' tSTAR arg_value 02551 { 02552 #if 0 02553 NODE *n1; 02554 if (nd_type($4) == NODE_ARRAY && 02555 (n1 = splat_array($1)) != 0) { 02556 $$ = list_concat(n1, $4); 02557 } 02558 else { 02559 $$ = arg_concat($1, $4); 02560 } 02561 #endif 02562 $$ = mrhs_add_star(args2mrhs($1), $4); 02563 02564 } 02565 | tSTAR arg_value 02566 { 02567 #if 0 02568 $$ = NEW_SPLAT($2); 02569 #endif 02570 $$ = mrhs_add_star(mrhs_new(), $2); 02571 02572 } 02573 ; 02574 02575 primary : literal 02576 | strings 02577 | xstring 02578 | regexp 02579 | words 02580 | qwords 02581 | var_ref 02582 | backref 02583 | tFID 02584 { 02585 #if 0 02586 $$ = NEW_FCALL($1, 0); 02587 #endif 02588 $$ = method_arg(dispatch1(fcall, $1), arg_new()); 02589 02590 } 02591 | k_begin 02592 { 02593 #if 0 02594 $<num>$ = ruby_sourceline; 02595 #endif 02596 02597 } 02598 bodystmt 02599 k_end 02600 { 02601 #if 0 02602 if ($3 == NULL) { 02603 $$ = NEW_NIL(); 02604 } 02605 else { 02606 if (nd_type($3) == NODE_RESCUE || 02607 nd_type($3) == NODE_ENSURE) 02608 nd_set_line($3, $<num>2); 02609 $$ = NEW_BEGIN($3); 02610 } 02611 nd_set_line($$, $<num>2); 02612 #endif 02613 $$ = dispatch1(begin, $3); 02614 02615 } 02616 | tLPAREN_ARG expr {lex_state = EXPR_ENDARG;} rparen 02617 { 02618 rb_warning0("(...) interpreted as grouped expression"); 02619 #if 0 02620 $$ = $2; 02621 #endif 02622 $$ = dispatch1(paren, $2); 02623 02624 } 02625 | tLPAREN compstmt ')' 02626 { 02627 #if 0 02628 $$ = $2; 02629 #endif 02630 $$ = dispatch1(paren, $2); 02631 02632 } 02633 | primary_value tCOLON2 tCONSTANT 02634 { 02635 #if 0 02636 $$ = NEW_COLON2($1, $3); 02637 #endif 02638 $$ = dispatch2(const_path_ref, $1, $3); 02639 02640 } 02641 | tCOLON3 tCONSTANT 02642 { 02643 #if 0 02644 $$ = NEW_COLON3($2); 02645 #endif 02646 $$ = dispatch1(top_const_ref, $2); 02647 02648 } 02649 | tLBRACK aref_args ']' 02650 { 02651 #if 0 02652 if ($2 == 0) { 02653 $$ = NEW_ZARRAY(); /* zero length array*/ 02654 } 02655 else { 02656 $$ = $2; 02657 } 02658 #endif 02659 $$ = dispatch1(array, escape_Qundef($2)); 02660 02661 } 02662 | tLBRACE assoc_list '}' 02663 { 02664 #if 0 02665 $$ = NEW_HASH($2); 02666 #endif 02667 $$ = dispatch1(hash, escape_Qundef($2)); 02668 02669 } 02670 | keyword_return 02671 { 02672 #if 0 02673 $$ = NEW_RETURN(0); 02674 #endif 02675 $$ = dispatch0(return0); 02676 02677 } 02678 | keyword_yield '(' call_args rparen 02679 { 02680 #if 0 02681 $$ = new_yield($3); 02682 #endif 02683 $$ = dispatch1(yield, dispatch1(paren, $3)); 02684 02685 } 02686 | keyword_yield '(' rparen 02687 { 02688 #if 0 02689 $$ = NEW_YIELD(0, Qfalse); 02690 #endif 02691 $$ = dispatch1(yield, dispatch1(paren, arg_new())); 02692 02693 } 02694 | keyword_yield 02695 { 02696 #if 0 02697 $$ = NEW_YIELD(0, Qfalse); 02698 #endif 02699 $$ = dispatch0(yield0); 02700 02701 } 02702 | keyword_defined opt_nl '(' {in_defined = 1;} expr rparen 02703 { 02704 #if 0 02705 in_defined = 0; 02706 $$ = NEW_DEFINED($5); 02707 #endif 02708 in_defined = 0; 02709 $$ = dispatch1(defined, $5); 02710 02711 } 02712 | keyword_not '(' expr rparen 02713 { 02714 #if 0 02715 $$ = call_uni_op(cond($3), '!'); 02716 #endif 02717 $$ = dispatch2(unary, ripper_intern("not"), $3); 02718 02719 } 02720 | keyword_not '(' rparen 02721 { 02722 #if 0 02723 $$ = call_uni_op(cond(NEW_NIL()), '!'); 02724 #endif 02725 $$ = dispatch2(unary, ripper_intern("not"), Qnil); 02726 02727 } 02728 | operation brace_block 02729 { 02730 #if 0 02731 $2->nd_iter = NEW_FCALL($1, 0); 02732 $$ = $2; 02733 fixpos($2->nd_iter, $2); 02734 #endif 02735 $$ = method_arg(dispatch1(fcall, $1), arg_new()); 02736 $$ = method_add_block($$, $2); 02737 02738 } 02739 | method_call 02740 | method_call brace_block 02741 { 02742 #if 0 02743 block_dup_check($1->nd_args, $2); 02744 $2->nd_iter = $1; 02745 $$ = $2; 02746 fixpos($$, $1); 02747 #endif 02748 $$ = method_add_block($1, $2); 02749 02750 } 02751 | tLAMBDA lambda 02752 { 02753 $$ = $2; 02754 } 02755 | k_if expr_value then 02756 compstmt 02757 if_tail 02758 k_end 02759 { 02760 #if 0 02761 $$ = NEW_IF(cond($2), $4, $5); 02762 fixpos($$, $2); 02763 #endif 02764 $$ = dispatch3(if, $2, $4, escape_Qundef($5)); 02765 02766 } 02767 | k_unless expr_value then 02768 compstmt 02769 opt_else 02770 k_end 02771 { 02772 #if 0 02773 $$ = NEW_UNLESS(cond($2), $4, $5); 02774 fixpos($$, $2); 02775 #endif 02776 $$ = dispatch3(unless, $2, $4, escape_Qundef($5)); 02777 02778 } 02779 | k_while {COND_PUSH(1);} expr_value do {COND_POP();} 02780 compstmt 02781 k_end 02782 { 02783 #if 0 02784 $$ = NEW_WHILE(cond($3), $6, 1); 02785 fixpos($$, $3); 02786 #endif 02787 $$ = dispatch2(while, $3, $6); 02788 02789 } 02790 | k_until {COND_PUSH(1);} expr_value do {COND_POP();} 02791 compstmt 02792 k_end 02793 { 02794 #if 0 02795 $$ = NEW_UNTIL(cond($3), $6, 1); 02796 fixpos($$, $3); 02797 #endif 02798 $$ = dispatch2(until, $3, $6); 02799 02800 } 02801 | k_case expr_value opt_terms 02802 case_body 02803 k_end 02804 { 02805 #if 0 02806 $$ = NEW_CASE($2, $4); 02807 fixpos($$, $2); 02808 #endif 02809 $$ = dispatch2(case, $2, $4); 02810 02811 } 02812 | k_case opt_terms case_body k_end 02813 { 02814 #if 0 02815 $$ = NEW_CASE(0, $3); 02816 #endif 02817 $$ = dispatch2(case, Qnil, $3); 02818 02819 } 02820 | k_for for_var keyword_in 02821 {COND_PUSH(1);} 02822 expr_value do 02823 {COND_POP();} 02824 compstmt 02825 k_end 02826 { 02827 #if 0 02828 /* 02829 * for a, b, c in e 02830 * #=> 02831 * e.each{|*x| a, b, c = x 02832 * 02833 * for a in e 02834 * #=> 02835 * e.each{|x| a, = x} 02836 */ 02837 ID id = internal_id(); 02838 ID *tbl = ALLOC_N(ID, 2); 02839 NODE *m = NEW_ARGS_AUX(0, 0); 02840 NODE *args, *scope; 02841 02842 if (nd_type($2) == NODE_MASGN) { 02843 /* if args.length == 1 && args[0].kind_of?(Array) 02844 * args = args[0] 02845 * end 02846 */ 02847 NODE *one = NEW_LIST(NEW_LIT(INT2FIX(1))); 02848 NODE *zero = NEW_LIST(NEW_LIT(INT2FIX(0))); 02849 m->nd_next = block_append( 02850 NEW_IF( 02851 NEW_NODE(NODE_AND, 02852 NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("length"), 0), 02853 rb_intern("=="), one), 02854 NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero), 02855 rb_intern("kind_of?"), NEW_LIST(NEW_LIT(rb_cArray))), 02856 0), 02857 NEW_DASGN_CURR(id, 02858 NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero)), 02859 0), 02860 node_assign($2, NEW_DVAR(id))); 02861 02862 args = new_args(m, 0, id, 0, 0); 02863 } 02864 else { 02865 if (nd_type($2) == NODE_LASGN || 02866 nd_type($2) == NODE_DASGN || 02867 nd_type($2) == NODE_DASGN_CURR) { 02868 $2->nd_value = NEW_DVAR(id); 02869 m->nd_plen = 1; 02870 m->nd_next = $2; 02871 args = new_args(m, 0, 0, 0, 0); 02872 } 02873 else { 02874 m->nd_next = node_assign(NEW_MASGN(NEW_LIST($2), 0), NEW_DVAR(id)); 02875 args = new_args(m, 0, id, 0, 0); 02876 } 02877 } 02878 scope = NEW_NODE(NODE_SCOPE, tbl, $8, args); 02879 tbl[0] = 1; tbl[1] = id; 02880 $$ = NEW_FOR(0, $5, scope); 02881 fixpos($$, $2); 02882 #endif 02883 $$ = dispatch3(for, $2, $5, $8); 02884 02885 } 02886 | k_class cpath superclass 02887 { 02888 if (in_def || in_single) 02889 yyerror("class definition in method body"); 02890 local_push(0); 02891 #if 0 02892 $<num>$ = ruby_sourceline; 02893 #endif 02894 02895 } 02896 bodystmt 02897 k_end 02898 { 02899 #if 0 02900 $$ = NEW_CLASS($2, $5, $3); 02901 nd_set_line($$, $<num>4); 02902 #endif 02903 $$ = dispatch3(class, $2, $3, $5); 02904 02905 local_pop(); 02906 } 02907 | k_class tLSHFT expr 02908 { 02909 $<num>$ = in_def; 02910 in_def = 0; 02911 } 02912 term 02913 { 02914 $<num>$ = in_single; 02915 in_single = 0; 02916 local_push(0); 02917 } 02918 bodystmt 02919 k_end 02920 { 02921 #if 0 02922 $$ = NEW_SCLASS($3, $7); 02923 fixpos($$, $3); 02924 #endif 02925 $$ = dispatch2(sclass, $3, $7); 02926 02927 local_pop(); 02928 in_def = $<num>4; 02929 in_single = $<num>6; 02930 } 02931 | k_module cpath 02932 { 02933 if (in_def || in_single) 02934 yyerror("module definition in method body"); 02935 local_push(0); 02936 #if 0 02937 $<num>$ = ruby_sourceline; 02938 #endif 02939 02940 } 02941 bodystmt 02942 k_end 02943 { 02944 #if 0 02945 $$ = NEW_MODULE($2, $4); 02946 nd_set_line($$, $<num>3); 02947 #endif 02948 $$ = dispatch2(module, $2, $4); 02949 02950 local_pop(); 02951 } 02952 | k_def fname 02953 { 02954 $<id>$ = cur_mid; 02955 cur_mid = $2; 02956 in_def++; 02957 local_push(0); 02958 } 02959 f_arglist 02960 bodystmt 02961 k_end 02962 { 02963 #if 0 02964 NODE *body = remove_begin($5); 02965 reduce_nodes(&body); 02966 $$ = NEW_DEFN($2, $4, body, NOEX_PRIVATE); 02967 nd_set_line($$, $<num>1); 02968 #endif 02969 $$ = dispatch3(def, $2, $4, $5); 02970 02971 local_pop(); 02972 in_def--; 02973 cur_mid = $<id>3; 02974 } 02975 | k_def singleton dot_or_colon {lex_state = EXPR_FNAME;} fname 02976 { 02977 in_single++; 02978 lex_state = EXPR_ENDFN; /* force for args */ 02979 local_push(0); 02980 } 02981 f_arglist 02982 bodystmt 02983 k_end 02984 { 02985 #if 0 02986 NODE *body = remove_begin($8); 02987 reduce_nodes(&body); 02988 $$ = NEW_DEFS($2, $5, $7, body); 02989 nd_set_line($$, $<num>1); 02990 #endif 02991 $$ = dispatch5(defs, $2, $3, $5, $7, $8); 02992 02993 local_pop(); 02994 in_single--; 02995 } 02996 | keyword_break 02997 { 02998 #if 0 02999 $$ = NEW_BREAK(0); 03000 #endif 03001 $$ = dispatch1(break, arg_new()); 03002 03003 } 03004 | keyword_next 03005 { 03006 #if 0 03007 $$ = NEW_NEXT(0); 03008 #endif 03009 $$ = dispatch1(next, arg_new()); 03010 03011 } 03012 | keyword_redo 03013 { 03014 #if 0 03015 $$ = NEW_REDO(); 03016 #endif 03017 $$ = dispatch0(redo); 03018 03019 } 03020 | keyword_retry 03021 { 03022 #if 0 03023 $$ = NEW_RETRY(); 03024 #endif 03025 $$ = dispatch0(retry); 03026 03027 } 03028 ; 03029 03030 primary_value : primary 03031 { 03032 #if 0 03033 value_expr($1); 03034 $$ = $1; 03035 if (!$$) $$ = NEW_NIL(); 03036 #endif 03037 $$ = $1; 03038 03039 } 03040 ; 03041 03042 k_begin : keyword_begin 03043 { 03044 token_info_push("begin"); 03045 } 03046 ; 03047 03048 k_if : keyword_if 03049 { 03050 token_info_push("if"); 03051 } 03052 ; 03053 03054 k_unless : keyword_unless 03055 { 03056 token_info_push("unless"); 03057 } 03058 ; 03059 03060 k_while : keyword_while 03061 { 03062 token_info_push("while"); 03063 } 03064 ; 03065 03066 k_until : keyword_until 03067 { 03068 token_info_push("until"); 03069 } 03070 ; 03071 03072 k_case : keyword_case 03073 { 03074 token_info_push("case"); 03075 } 03076 ; 03077 03078 k_for : keyword_for 03079 { 03080 token_info_push("for"); 03081 } 03082 ; 03083 03084 k_class : keyword_class 03085 { 03086 token_info_push("class"); 03087 } 03088 ; 03089 03090 k_module : keyword_module 03091 { 03092 token_info_push("module"); 03093 } 03094 ; 03095 03096 k_def : keyword_def 03097 { 03098 token_info_push("def"); 03099 #if 0 03100 $<num>$ = ruby_sourceline; 03101 #endif 03102 03103 } 03104 ; 03105 03106 k_end : keyword_end 03107 { 03108 token_info_pop("end"); 03109 } 03110 ; 03111 03112 then : term 03113 /* 03114 */ 03115 { $$ = Qnil; } 03116 03117 | keyword_then 03118 | term keyword_then 03119 /* 03120 */ 03121 { $$ = $2; } 03122 03123 ; 03124 03125 do : term 03126 /* 03127 */ 03128 { $$ = Qnil; } 03129 03130 | keyword_do_cond 03131 ; 03132 03133 if_tail : opt_else 03134 | keyword_elsif expr_value then 03135 compstmt 03136 if_tail 03137 { 03138 #if 0 03139 $$ = NEW_IF(cond($2), $4, $5); 03140 fixpos($$, $2); 03141 #endif 03142 $$ = dispatch3(elsif, $2, $4, escape_Qundef($5)); 03143 03144 } 03145 ; 03146 03147 opt_else : none 03148 | keyword_else compstmt 03149 { 03150 #if 0 03151 $$ = $2; 03152 #endif 03153 $$ = dispatch1(else, $2); 03154 03155 } 03156 ; 03157 03158 for_var : lhs 03159 | mlhs 03160 ; 03161 03162 f_marg : f_norm_arg 03163 { 03164 $$ = assignable($1, 0); 03165 #if 0 03166 #endif 03167 $$ = dispatch1(mlhs_paren, $$); 03168 03169 } 03170 | tLPAREN f_margs rparen 03171 { 03172 #if 0 03173 $$ = $2; 03174 #endif 03175 $$ = dispatch1(mlhs_paren, $2); 03176 03177 } 03178 ; 03179 03180 f_marg_list : f_marg 03181 { 03182 #if 0 03183 $$ = NEW_LIST($1); 03184 #endif 03185 $$ = mlhs_add(mlhs_new(), $1); 03186 03187 } 03188 | f_marg_list ',' f_marg 03189 { 03190 #if 0 03191 $$ = list_append($1, $3); 03192 #endif 03193 $$ = mlhs_add($1, $3); 03194 03195 } 03196 ; 03197 03198 f_margs : f_marg_list 03199 { 03200 #if 0 03201 $$ = NEW_MASGN($1, 0); 03202 #endif 03203 $$ = $1; 03204 03205 } 03206 | f_marg_list ',' tSTAR f_norm_arg 03207 { 03208 $$ = assignable($4, 0); 03209 #if 0 03210 $$ = NEW_MASGN($1, $$); 03211 #endif 03212 $$ = mlhs_add_star($1, $$); 03213 03214 } 03215 | f_marg_list ',' tSTAR f_norm_arg ',' f_marg_list 03216 { 03217 $$ = assignable($4, 0); 03218 #if 0 03219 $$ = NEW_MASGN($1, NEW_POSTARG($$, $6)); 03220 #endif 03221 $$ = mlhs_add_star($1, $$); 03222 03223 } 03224 | f_marg_list ',' tSTAR 03225 { 03226 #if 0 03227 $$ = NEW_MASGN($1, -1); 03228 #endif 03229 $$ = mlhs_add_star($1, Qnil); 03230 03231 } 03232 | f_marg_list ',' tSTAR ',' f_marg_list 03233 { 03234 #if 0 03235 $$ = NEW_MASGN($1, NEW_POSTARG(-1, $5)); 03236 #endif 03237 $$ = mlhs_add_star($1, $5); 03238 03239 } 03240 | tSTAR f_norm_arg 03241 { 03242 $$ = assignable($2, 0); 03243 #if 0 03244 $$ = NEW_MASGN(0, $$); 03245 #endif 03246 $$ = mlhs_add_star(mlhs_new(), $$); 03247 03248 } 03249 | tSTAR f_norm_arg ',' f_marg_list 03250 { 03251 $$ = assignable($2, 0); 03252 #if 0 03253 $$ = NEW_MASGN(0, NEW_POSTARG($$, $4)); 03254 #endif 03255 #if 0 03256 TODO: Check me 03257 #endif 03258 $$ = mlhs_add_star($$, $4); 03259 03260 } 03261 | tSTAR 03262 { 03263 #if 0 03264 $$ = NEW_MASGN(0, -1); 03265 #endif 03266 $$ = mlhs_add_star(mlhs_new(), Qnil); 03267 03268 } 03269 | tSTAR ',' f_marg_list 03270 { 03271 #if 0 03272 $$ = NEW_MASGN(0, NEW_POSTARG(-1, $3)); 03273 #endif 03274 $$ = mlhs_add_star(mlhs_new(), Qnil); 03275 03276 } 03277 ; 03278 03279 block_param : f_arg ',' f_block_optarg ',' f_rest_arg opt_f_block_arg 03280 { 03281 #if 0 03282 $$ = new_args($1, $3, $5, 0, $6); 03283 #endif 03284 $$ = params_new($1, $3, $5, Qnil, escape_Qundef($6)); 03285 03286 } 03287 | f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg 03288 { 03289 #if 0 03290 $$ = new_args($1, $3, $5, $7, $8); 03291 #endif 03292 $$ = params_new($1, $3, $5, $7, escape_Qundef($8)); 03293 03294 } 03295 | f_arg ',' f_block_optarg opt_f_block_arg 03296 { 03297 #if 0 03298 $$ = new_args($1, $3, 0, 0, $4); 03299 #endif 03300 $$ = params_new($1, $3, Qnil, Qnil, escape_Qundef($4)); 03301 03302 } 03303 | f_arg ',' f_block_optarg ',' f_arg opt_f_block_arg 03304 { 03305 #if 0 03306 $$ = new_args($1, $3, 0, $5, $6); 03307 #endif 03308 $$ = params_new($1, $3, Qnil, $5, escape_Qundef($6)); 03309 03310 } 03311 | f_arg ',' f_rest_arg opt_f_block_arg 03312 { 03313 #if 0 03314 $$ = new_args($1, 0, $3, 0, $4); 03315 #endif 03316 $$ = params_new($1, Qnil, $3, Qnil, escape_Qundef($4)); 03317 03318 } 03319 | f_arg ',' 03320 { 03321 #if 0 03322 $$ = new_args($1, 0, 1, 0, 0); 03323 #endif 03324 $$ = params_new($1, Qnil, Qnil, Qnil, Qnil); 03325 dispatch1(excessed_comma, $$); 03326 03327 } 03328 | f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg 03329 { 03330 #if 0 03331 $$ = new_args($1, 0, $3, $5, $6); 03332 #endif 03333 $$ = params_new($1, Qnil, $3, $5, escape_Qundef($6)); 03334 03335 } 03336 | f_arg opt_f_block_arg 03337 { 03338 #if 0 03339 $$ = new_args($1, 0, 0, 0, $2); 03340 #endif 03341 $$ = params_new($1, Qnil,Qnil, Qnil, escape_Qundef($2)); 03342 03343 } 03344 | f_block_optarg ',' f_rest_arg opt_f_block_arg 03345 { 03346 #if 0 03347 $$ = new_args(0, $1, $3, 0, $4); 03348 #endif 03349 $$ = params_new(Qnil, $1, $3, Qnil, escape_Qundef($4)); 03350 03351 } 03352 | f_block_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg 03353 { 03354 #if 0 03355 $$ = new_args(0, $1, $3, $5, $6); 03356 #endif 03357 $$ = params_new(Qnil, $1, $3, $5, escape_Qundef($6)); 03358 03359 } 03360 | f_block_optarg opt_f_block_arg 03361 { 03362 #if 0 03363 $$ = new_args(0, $1, 0, 0, $2); 03364 #endif 03365 $$ = params_new(Qnil, $1, Qnil, Qnil,escape_Qundef($2)); 03366 03367 } 03368 | f_block_optarg ',' f_arg opt_f_block_arg 03369 { 03370 #if 0 03371 $$ = new_args(0, $1, 0, $3, $4); 03372 #endif 03373 $$ = params_new(Qnil, $1, Qnil, $3, escape_Qundef($4)); 03374 03375 } 03376 | f_rest_arg opt_f_block_arg 03377 { 03378 #if 0 03379 $$ = new_args(0, 0, $1, 0, $2); 03380 #endif 03381 $$ = params_new(Qnil, Qnil, $1, Qnil, escape_Qundef($2)); 03382 03383 } 03384 | f_rest_arg ',' f_arg opt_f_block_arg 03385 { 03386 #if 0 03387 $$ = new_args(0, 0, $1, $3, $4); 03388 #endif 03389 $$ = params_new(Qnil, Qnil, $1, $3, escape_Qundef($4)); 03390 03391 } 03392 | f_block_arg 03393 { 03394 #if 0 03395 $$ = new_args(0, 0, 0, 0, $1); 03396 #endif 03397 $$ = params_new(Qnil, Qnil, Qnil, Qnil, $1); 03398 03399 } 03400 ; 03401 03402 opt_block_param : none 03403 | block_param_def 03404 { 03405 command_start = TRUE; 03406 } 03407 ; 03408 03409 block_param_def : '|' opt_bv_decl '|' 03410 { 03411 #if 0 03412 $$ = 0; 03413 #endif 03414 $$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil), 03415 escape_Qundef($2)); 03416 03417 } 03418 | tOROP 03419 { 03420 #if 0 03421 $$ = 0; 03422 #endif 03423 $$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil), 03424 Qnil); 03425 03426 } 03427 | '|' block_param opt_bv_decl '|' 03428 { 03429 #if 0 03430 $$ = $2; 03431 #endif 03432 $$ = blockvar_new(escape_Qundef($2), escape_Qundef($3)); 03433 03434 } 03435 ; 03436 03437 03438 opt_bv_decl : none 03439 | ';' bv_decls 03440 { 03441 #if 0 03442 $$ = 0; 03443 #endif 03444 $$ = $2; 03445 03446 } 03447 ; 03448 03449 bv_decls : bvar 03450 /* 03451 */ 03452 { 03453 $$ = rb_ary_new3(1, $1); 03454 } 03455 03456 | bv_decls ',' bvar 03457 /* 03458 */ 03459 { 03460 rb_ary_push($$, $3); 03461 } 03462 03463 ; 03464 03465 bvar : tIDENTIFIER 03466 { 03467 new_bv(get_id($1)); 03468 #if 0 03469 #endif 03470 $$ = get_value($1); 03471 03472 } 03473 | f_bad_arg 03474 { 03475 $$ = 0; 03476 } 03477 ; 03478 03479 lambda : { 03480 $<vars>$ = dyna_push(); 03481 } 03482 { 03483 $<num>$ = lpar_beg; 03484 lpar_beg = ++paren_nest; 03485 } 03486 f_larglist 03487 lambda_body 03488 { 03489 lpar_beg = $<num>2; 03490 #if 0 03491 $$ = $3; 03492 $$->nd_body = NEW_SCOPE($3->nd_head, $4); 03493 #endif 03494 $$ = dispatch2(lambda, $3, $4); 03495 03496 dyna_pop($<vars>1); 03497 } 03498 ; 03499 03500 f_larglist : '(' f_args opt_bv_decl rparen 03501 { 03502 #if 0 03503 $$ = NEW_LAMBDA($2); 03504 #endif 03505 $$ = dispatch1(paren, $2); 03506 03507 } 03508 | f_args 03509 { 03510 #if 0 03511 $$ = NEW_LAMBDA($1); 03512 #endif 03513 $$ = $1; 03514 03515 } 03516 ; 03517 03518 lambda_body : tLAMBEG compstmt '}' 03519 { 03520 $$ = $2; 03521 } 03522 | keyword_do_LAMBDA compstmt keyword_end 03523 { 03524 $$ = $2; 03525 } 03526 ; 03527 03528 do_block : keyword_do_block 03529 { 03530 $<vars>1 = dyna_push(); 03531 #if 0 03532 $<num>$ = ruby_sourceline; 03533 #endif 03534 } 03535 opt_block_param 03536 compstmt 03537 keyword_end 03538 { 03539 #if 0 03540 $$ = NEW_ITER($3,$4); 03541 nd_set_line($$, $<num>2); 03542 #endif 03543 $$ = dispatch2(do_block, escape_Qundef($3), $4); 03544 03545 dyna_pop($<vars>1); 03546 } 03547 ; 03548 03549 block_call : command do_block 03550 { 03551 #if 0 03552 if (nd_type($1) == NODE_YIELD) { 03553 compile_error(PARSER_ARG "block given to yield"); 03554 } 03555 else { 03556 block_dup_check($1->nd_args, $2); 03557 } 03558 $2->nd_iter = $1; 03559 $$ = $2; 03560 fixpos($$, $1); 03561 #endif 03562 $$ = method_add_block($1, $2); 03563 03564 } 03565 | block_call '.' operation2 opt_paren_args 03566 { 03567 #if 0 03568 $$ = NEW_CALL($1, $3, $4); 03569 #endif 03570 $$ = dispatch3(call, $1, ripper_id2sym('.'), $3); 03571 $$ = method_optarg($$, $4); 03572 03573 } 03574 | block_call tCOLON2 operation2 opt_paren_args 03575 { 03576 #if 0 03577 $$ = NEW_CALL($1, $3, $4); 03578 #endif 03579 $$ = dispatch3(call, $1, ripper_intern("::"), $3); 03580 $$ = method_optarg($$, $4); 03581 03582 } 03583 ; 03584 03585 method_call : operation paren_args 03586 { 03587 #if 0 03588 $$ = NEW_FCALL($1, $2); 03589 fixpos($$, $2); 03590 #endif 03591 $$ = method_arg(dispatch1(fcall, $1), $2); 03592 03593 } 03594 | primary_value '.' operation2 opt_paren_args 03595 { 03596 #if 0 03597 $$ = NEW_CALL($1, $3, $4); 03598 fixpos($$, $1); 03599 #endif 03600 $$ = dispatch3(call, $1, ripper_id2sym('.'), $3); 03601 $$ = method_optarg($$, $4); 03602 03603 } 03604 | primary_value tCOLON2 operation2 paren_args 03605 { 03606 #if 0 03607 $$ = NEW_CALL($1, $3, $4); 03608 fixpos($$, $1); 03609 #endif 03610 $$ = dispatch3(call, $1, ripper_id2sym('.'), $3); 03611 $$ = method_optarg($$, $4); 03612 03613 } 03614 | primary_value tCOLON2 operation3 03615 { 03616 #if 0 03617 $$ = NEW_CALL($1, $3, 0); 03618 #endif 03619 $$ = dispatch3(call, $1, ripper_intern("::"), $3); 03620 03621 } 03622 | primary_value '.' paren_args 03623 { 03624 #if 0 03625 $$ = NEW_CALL($1, rb_intern("call"), $3); 03626 fixpos($$, $1); 03627 #endif 03628 $$ = dispatch3(call, $1, ripper_id2sym('.'), 03629 ripper_intern("call")); 03630 $$ = method_optarg($$, $3); 03631 03632 } 03633 | primary_value tCOLON2 paren_args 03634 { 03635 #if 0 03636 $$ = NEW_CALL($1, rb_intern("call"), $3); 03637 fixpos($$, $1); 03638 #endif 03639 $$ = dispatch3(call, $1, ripper_intern("::"), 03640 ripper_intern("call")); 03641 $$ = method_optarg($$, $3); 03642 03643 } 03644 | keyword_super paren_args 03645 { 03646 #if 0 03647 $$ = NEW_SUPER($2); 03648 #endif 03649 $$ = dispatch1(super, $2); 03650 03651 } 03652 | keyword_super 03653 { 03654 #if 0 03655 $$ = NEW_ZSUPER(); 03656 #endif 03657 $$ = dispatch0(zsuper); 03658 03659 } 03660 | primary_value '[' opt_call_args rbracket 03661 { 03662 #if 0 03663 if ($1 && nd_type($1) == NODE_SELF) 03664 $$ = NEW_FCALL(tAREF, $3); 03665 else 03666 $$ = NEW_CALL($1, tAREF, $3); 03667 fixpos($$, $1); 03668 #endif 03669 $$ = dispatch2(aref, $1, escape_Qundef($3)); 03670 03671 } 03672 ; 03673 03674 brace_block : '{' 03675 { 03676 $<vars>1 = dyna_push(); 03677 #if 0 03678 $<num>$ = ruby_sourceline; 03679 #endif 03680 03681 } 03682 opt_block_param 03683 compstmt '}' 03684 { 03685 #if 0 03686 $$ = NEW_ITER($3,$4); 03687 nd_set_line($$, $<num>2); 03688 #endif 03689 $$ = dispatch2(brace_block, escape_Qundef($3), $4); 03690 03691 dyna_pop($<vars>1); 03692 } 03693 | keyword_do 03694 { 03695 $<vars>1 = dyna_push(); 03696 #if 0 03697 $<num>$ = ruby_sourceline; 03698 #endif 03699 03700 } 03701 opt_block_param 03702 compstmt keyword_end 03703 { 03704 #if 0 03705 $$ = NEW_ITER($3,$4); 03706 nd_set_line($$, $<num>2); 03707 #endif 03708 $$ = dispatch2(do_block, escape_Qundef($3), $4); 03709 03710 dyna_pop($<vars>1); 03711 } 03712 ; 03713 03714 case_body : keyword_when args then 03715 compstmt 03716 cases 03717 { 03718 #if 0 03719 $$ = NEW_WHEN($2, $4, $5); 03720 #endif 03721 $$ = dispatch3(when, $2, $4, escape_Qundef($5)); 03722 03723 } 03724 ; 03725 03726 cases : opt_else 03727 | case_body 03728 ; 03729 03730 opt_rescue : keyword_rescue exc_list exc_var then 03731 compstmt 03732 opt_rescue 03733 { 03734 #if 0 03735 if ($3) { 03736 $3 = node_assign($3, NEW_ERRINFO()); 03737 $5 = block_append($3, $5); 03738 } 03739 $$ = NEW_RESBODY($2, $5, $6); 03740 fixpos($$, $2?$2:$5); 03741 #endif 03742 $$ = dispatch4(rescue, 03743 escape_Qundef($2), 03744 escape_Qundef($3), 03745 escape_Qundef($5), 03746 escape_Qundef($6)); 03747 03748 } 03749 | none 03750 ; 03751 03752 exc_list : arg_value 03753 { 03754 #if 0 03755 $$ = NEW_LIST($1); 03756 #endif 03757 $$ = rb_ary_new3(1, $1); 03758 03759 } 03760 | mrhs 03761 { 03762 #if 0 03763 if (!($$ = splat_array($1))) $$ = $1; 03764 #endif 03765 $$ = $1; 03766 03767 } 03768 | none 03769 ; 03770 03771 exc_var : tASSOC lhs 03772 { 03773 $$ = $2; 03774 } 03775 | none 03776 ; 03777 03778 opt_ensure : keyword_ensure compstmt 03779 { 03780 #if 0 03781 $$ = $2; 03782 #endif 03783 $$ = dispatch1(ensure, $2); 03784 03785 } 03786 | none 03787 ; 03788 03789 literal : numeric 03790 | symbol 03791 { 03792 #if 0 03793 $$ = NEW_LIT(ID2SYM($1)); 03794 #endif 03795 $$ = dispatch1(symbol_literal, $1); 03796 03797 } 03798 | dsym 03799 ; 03800 03801 strings : string 03802 { 03803 #if 0 03804 NODE *node = $1; 03805 if (!node) { 03806 node = NEW_STR(STR_NEW0()); 03807 } 03808 else { 03809 node = evstr2dstr(node); 03810 } 03811 $$ = node; 03812 #endif 03813 $$ = $1; 03814 03815 } 03816 ; 03817 03818 string : tCHAR 03819 | string1 03820 | string string1 03821 { 03822 #if 0 03823 $$ = literal_concat($1, $2); 03824 #endif 03825 $$ = dispatch2(string_concat, $1, $2); 03826 03827 } 03828 ; 03829 03830 string1 : tSTRING_BEG string_contents tSTRING_END 03831 { 03832 #if 0 03833 $$ = $2; 03834 #endif 03835 $$ = dispatch1(string_literal, $2); 03836 03837 } 03838 ; 03839 03840 xstring : tXSTRING_BEG xstring_contents tSTRING_END 03841 { 03842 #if 0 03843 NODE *node = $2; 03844 if (!node) { 03845 node = NEW_XSTR(STR_NEW0()); 03846 } 03847 else { 03848 switch (nd_type(node)) { 03849 case NODE_STR: 03850 nd_set_type(node, NODE_XSTR); 03851 break; 03852 case NODE_DSTR: 03853 nd_set_type(node, NODE_DXSTR); 03854 break; 03855 default: 03856 node = NEW_NODE(NODE_DXSTR, Qnil, 1, NEW_LIST(node)); 03857 break; 03858 } 03859 } 03860 $$ = node; 03861 #endif 03862 $$ = dispatch1(xstring_literal, $2); 03863 03864 } 03865 ; 03866 03867 regexp : tREGEXP_BEG regexp_contents tREGEXP_END 03868 { 03869 #if 0 03870 int options = $3; 03871 NODE *node = $2; 03872 NODE *list, *prev; 03873 if (!node) { 03874 node = NEW_LIT(reg_compile(STR_NEW0(), options)); 03875 } 03876 else switch (nd_type(node)) { 03877 case NODE_STR: 03878 { 03879 VALUE src = node->nd_lit; 03880 nd_set_type(node, NODE_LIT); 03881 node->nd_lit = reg_compile(src, options); 03882 } 03883 break; 03884 default: 03885 node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node)); 03886 case NODE_DSTR: 03887 if (options & RE_OPTION_ONCE) { 03888 nd_set_type(node, NODE_DREGX_ONCE); 03889 } 03890 else { 03891 nd_set_type(node, NODE_DREGX); 03892 } 03893 node->nd_cflag = options & RE_OPTION_MASK; 03894 if (!NIL_P(node->nd_lit)) reg_fragment_check(node->nd_lit, options); 03895 for (list = (prev = node)->nd_next; list; list = list->nd_next) { 03896 if (nd_type(list->nd_head) == NODE_STR) { 03897 VALUE tail = list->nd_head->nd_lit; 03898 if (reg_fragment_check(tail, options) && prev && !NIL_P(prev->nd_lit)) { 03899 VALUE lit = prev == node ? prev->nd_lit : prev->nd_head->nd_lit; 03900 if (!literal_concat0(parser, lit, tail)) { 03901 node = 0; 03902 break; 03903 } 03904 rb_str_resize(tail, 0); 03905 prev->nd_next = list->nd_next; 03906 rb_gc_force_recycle((VALUE)list->nd_head); 03907 rb_gc_force_recycle((VALUE)list); 03908 list = prev; 03909 } 03910 else { 03911 prev = list; 03912 } 03913 } 03914 else { 03915 prev = 0; 03916 } 03917 } 03918 if (!node->nd_next) { 03919 VALUE src = node->nd_lit; 03920 nd_set_type(node, NODE_LIT); 03921 node->nd_lit = reg_compile(src, options); 03922 } 03923 break; 03924 } 03925 $$ = node; 03926 #endif 03927 $$ = dispatch2(regexp_literal, $2, $3); 03928 03929 } 03930 ; 03931 03932 words : tWORDS_BEG ' ' tSTRING_END 03933 { 03934 #if 0 03935 $$ = NEW_ZARRAY(); 03936 #endif 03937 $$ = dispatch0(words_new); 03938 03939 } 03940 | tWORDS_BEG word_list tSTRING_END 03941 { 03942 $$ = $2; 03943 } 03944 ; 03945 03946 word_list : /* none */ 03947 { 03948 #if 0 03949 $$ = 0; 03950 #endif 03951 $$ = dispatch0(words_new); 03952 03953 } 03954 | word_list word ' ' 03955 { 03956 #if 0 03957 $$ = list_append($1, evstr2dstr($2)); 03958 #endif 03959 $$ = dispatch2(words_add, $1, $2); 03960 03961 } 03962 ; 03963 03964 word : string_content 03965 /* 03966 */ 03967 { 03968 $$ = dispatch0(word_new); 03969 $$ = dispatch2(word_add, $$, $1); 03970 } 03971 03972 | word string_content 03973 { 03974 #if 0 03975 $$ = literal_concat($1, $2); 03976 #endif 03977 $$ = dispatch2(word_add, $1, $2); 03978 03979 } 03980 ; 03981 03982 qwords : tQWORDS_BEG ' ' tSTRING_END 03983 { 03984 #if 0 03985 $$ = NEW_ZARRAY(); 03986 #endif 03987 $$ = dispatch0(qwords_new); 03988 03989 } 03990 | tQWORDS_BEG qword_list tSTRING_END 03991 { 03992 $$ = $2; 03993 } 03994 ; 03995 03996 qword_list : /* none */ 03997 { 03998 #if 0 03999 $$ = 0; 04000 #endif 04001 $$ = dispatch0(qwords_new); 04002 04003 } 04004 | qword_list tSTRING_CONTENT ' ' 04005 { 04006 #if 0 04007 $$ = list_append($1, $2); 04008 #endif 04009 $$ = dispatch2(qwords_add, $1, $2); 04010 04011 } 04012 ; 04013 04014 string_contents : /* none */ 04015 { 04016 #if 0 04017 $$ = 0; 04018 #endif 04019 $$ = dispatch0(string_content); 04020 04021 } 04022 | string_contents string_content 04023 { 04024 #if 0 04025 $$ = literal_concat($1, $2); 04026 #endif 04027 $$ = dispatch2(string_add, $1, $2); 04028 04029 } 04030 ; 04031 04032 xstring_contents: /* none */ 04033 { 04034 #if 0 04035 $$ = 0; 04036 #endif 04037 $$ = dispatch0(xstring_new); 04038 04039 } 04040 | xstring_contents string_content 04041 { 04042 #if 0 04043 $$ = literal_concat($1, $2); 04044 #endif 04045 $$ = dispatch2(xstring_add, $1, $2); 04046 04047 } 04048 ; 04049 04050 regexp_contents: /* none */ 04051 { 04052 #if 0 04053 $$ = 0; 04054 #endif 04055 $$ = dispatch0(regexp_new); 04056 04057 } 04058 | regexp_contents string_content 04059 { 04060 #if 0 04061 NODE *head = $1, *tail = $2; 04062 if (!head) { 04063 $$ = tail; 04064 } 04065 else if (!tail) { 04066 $$ = head; 04067 } 04068 else { 04069 switch (nd_type(head)) { 04070 case NODE_STR: 04071 nd_set_type(head, NODE_DSTR); 04072 break; 04073 case NODE_DSTR: 04074 break; 04075 default: 04076 head = list_append(NEW_DSTR(Qnil), head); 04077 break; 04078 } 04079 $$ = list_append(head, tail); 04080 } 04081 #endif 04082 $$ = dispatch2(regexp_add, $1, $2); 04083 04084 } 04085 ; 04086 04087 string_content : tSTRING_CONTENT 04088 | tSTRING_DVAR 04089 { 04090 $<node>$ = lex_strterm; 04091 lex_strterm = 0; 04092 lex_state = EXPR_BEG; 04093 } 04094 string_dvar 04095 { 04096 #if 0 04097 lex_strterm = $<node>2; 04098 $$ = NEW_EVSTR($3); 04099 #endif 04100 lex_strterm = $<node>2; 04101 $$ = dispatch1(string_dvar, $3); 04102 04103 } 04104 | tSTRING_DBEG 04105 { 04106 $<val>1 = cond_stack; 04107 $<val>$ = cmdarg_stack; 04108 cond_stack = 0; 04109 cmdarg_stack = 0; 04110 } 04111 { 04112 $<node>$ = lex_strterm; 04113 lex_strterm = 0; 04114 lex_state = EXPR_BEG; 04115 } 04116 compstmt '}' 04117 { 04118 cond_stack = $<val>1; 04119 cmdarg_stack = $<val>2; 04120 lex_strterm = $<node>3; 04121 #if 0 04122 if ($4) $4->flags &= ~NODE_FL_NEWLINE; 04123 $$ = new_evstr($4); 04124 #endif 04125 $$ = dispatch1(string_embexpr, $4); 04126 04127 } 04128 ; 04129 04130 string_dvar : tGVAR 04131 { 04132 #if 0 04133 $$ = NEW_GVAR($1); 04134 #endif 04135 $$ = dispatch1(var_ref, $1); 04136 04137 } 04138 | tIVAR 04139 { 04140 #if 0 04141 $$ = NEW_IVAR($1); 04142 #endif 04143 $$ = dispatch1(var_ref, $1); 04144 04145 } 04146 | tCVAR 04147 { 04148 #if 0 04149 $$ = NEW_CVAR($1); 04150 #endif 04151 $$ = dispatch1(var_ref, $1); 04152 04153 } 04154 | backref 04155 ; 04156 04157 symbol : tSYMBEG sym 04158 { 04159 lex_state = EXPR_END; 04160 #if 0 04161 $$ = $2; 04162 #endif 04163 $$ = dispatch1(symbol, $2); 04164 04165 } 04166 ; 04167 04168 sym : fname 04169 | tIVAR 04170 | tGVAR 04171 | tCVAR 04172 ; 04173 04174 dsym : tSYMBEG xstring_contents tSTRING_END 04175 { 04176 lex_state = EXPR_END; 04177 #if 0 04178 if (!($$ = $2)) { 04179 $$ = NEW_LIT(ID2SYM(rb_intern(""))); 04180 } 04181 else { 04182 VALUE lit; 04183 04184 switch (nd_type($$)) { 04185 case NODE_DSTR: 04186 nd_set_type($$, NODE_DSYM); 04187 break; 04188 case NODE_STR: 04189 lit = $$->nd_lit; 04190 $$->nd_lit = ID2SYM(rb_intern_str(lit)); 04191 nd_set_type($$, NODE_LIT); 04192 break; 04193 default: 04194 $$ = NEW_NODE(NODE_DSYM, Qnil, 1, NEW_LIST($$)); 04195 break; 04196 } 04197 } 04198 #endif 04199 $$ = dispatch1(dyna_symbol, $2); 04200 04201 } 04202 ; 04203 04204 numeric : tINTEGER 04205 | tFLOAT 04206 | tUMINUS_NUM tINTEGER %prec tLOWEST 04207 { 04208 #if 0 04209 $$ = negate_lit($2); 04210 #endif 04211 $$ = dispatch2(unary, ripper_intern("-@"), $2); 04212 04213 } 04214 | tUMINUS_NUM tFLOAT %prec tLOWEST 04215 { 04216 #if 0 04217 $$ = negate_lit($2); 04218 #endif 04219 $$ = dispatch2(unary, ripper_intern("-@"), $2); 04220 04221 } 04222 ; 04223 04224 variable : tIDENTIFIER 04225 | tIVAR 04226 | tGVAR 04227 | tCONSTANT 04228 | tCVAR 04229 | keyword_nil {ifndef_ripper($$ = keyword_nil);} 04230 | keyword_self {ifndef_ripper($$ = keyword_self);} 04231 | keyword_true {ifndef_ripper($$ = keyword_true);} 04232 | keyword_false {ifndef_ripper($$ = keyword_false);} 04233 | keyword__FILE__ {ifndef_ripper($$ = keyword__FILE__);} 04234 | keyword__LINE__ {ifndef_ripper($$ = keyword__LINE__);} 04235 | keyword__ENCODING__ {ifndef_ripper($$ = keyword__ENCODING__);} 04236 ; 04237 04238 var_ref : variable 04239 { 04240 #if 0 04241 if (!($$ = gettable($1))) $$ = NEW_BEGIN(0); 04242 #endif 04243 $$ = dispatch1(var_ref, $1); 04244 04245 } 04246 ; 04247 04248 var_lhs : variable 04249 { 04250 $$ = assignable($1, 0); 04251 #if 0 04252 #endif 04253 $$ = dispatch1(var_field, $$); 04254 04255 } 04256 ; 04257 04258 backref : tNTH_REF 04259 | tBACK_REF 04260 ; 04261 04262 superclass : term 04263 { 04264 #if 0 04265 $$ = 0; 04266 #endif 04267 $$ = Qnil; 04268 04269 } 04270 | '<' 04271 { 04272 lex_state = EXPR_BEG; 04273 } 04274 expr_value term 04275 { 04276 $$ = $3; 04277 } 04278 | error term 04279 { 04280 #if 0 04281 yyerrok; 04282 $$ = 0; 04283 #endif 04284 yyerrok; 04285 $$ = Qnil; 04286 04287 } 04288 ; 04289 04290 f_arglist : '(' f_args rparen 04291 { 04292 #if 0 04293 $$ = $2; 04294 #endif 04295 $$ = dispatch1(paren, $2); 04296 04297 lex_state = EXPR_BEG; 04298 command_start = TRUE; 04299 } 04300 | f_args term 04301 { 04302 $$ = $1; 04303 } 04304 ; 04305 04306 f_args : f_arg ',' f_optarg ',' f_rest_arg opt_f_block_arg 04307 { 04308 #if 0 04309 $$ = new_args($1, $3, $5, 0, $6); 04310 #endif 04311 $$ = params_new($1, $3, $5, Qnil, escape_Qundef($6)); 04312 04313 } 04314 | f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg 04315 { 04316 #if 0 04317 $$ = new_args($1, $3, $5, $7, $8); 04318 #endif 04319 $$ = params_new($1, $3, $5, $7, escape_Qundef($8)); 04320 04321 } 04322 | f_arg ',' f_optarg opt_f_block_arg 04323 { 04324 #if 0 04325 $$ = new_args($1, $3, 0, 0, $4); 04326 #endif 04327 $$ = params_new($1, $3, Qnil, Qnil, escape_Qundef($4)); 04328 04329 } 04330 | f_arg ',' f_optarg ',' f_arg opt_f_block_arg 04331 { 04332 #if 0 04333 $$ = new_args($1, $3, 0, $5, $6); 04334 #endif 04335 $$ = params_new($1, $3, Qnil, $5, escape_Qundef($6)); 04336 04337 } 04338 | f_arg ',' f_rest_arg opt_f_block_arg 04339 { 04340 #if 0 04341 $$ = new_args($1, 0, $3, 0, $4); 04342 #endif 04343 $$ = params_new($1, Qnil, $3, Qnil, escape_Qundef($4)); 04344 04345 } 04346 | f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg 04347 { 04348 #if 0 04349 $$ = new_args($1, 0, $3, $5, $6); 04350 #endif 04351 $$ = params_new($1, Qnil, $3, $5, escape_Qundef($6)); 04352 04353 } 04354 | f_arg opt_f_block_arg 04355 { 04356 #if 0 04357 $$ = new_args($1, 0, 0, 0, $2); 04358 #endif 04359 $$ = params_new($1, Qnil, Qnil, Qnil,escape_Qundef($2)); 04360 04361 } 04362 | f_optarg ',' f_rest_arg opt_f_block_arg 04363 { 04364 #if 0 04365 $$ = new_args(0, $1, $3, 0, $4); 04366 #endif 04367 $$ = params_new(Qnil, $1, $3, Qnil, escape_Qundef($4)); 04368 04369 } 04370 | f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg 04371 { 04372 #if 0 04373 $$ = new_args(0, $1, $3, $5, $6); 04374 #endif 04375 $$ = params_new(Qnil, $1, $3, $5, escape_Qundef($6)); 04376 04377 } 04378 | f_optarg opt_f_block_arg 04379 { 04380 #if 0 04381 $$ = new_args(0, $1, 0, 0, $2); 04382 #endif 04383 $$ = params_new(Qnil, $1, Qnil, Qnil,escape_Qundef($2)); 04384 04385 } 04386 | f_optarg ',' f_arg opt_f_block_arg 04387 { 04388 #if 0 04389 $$ = new_args(0, $1, 0, $3, $4); 04390 #endif 04391 $$ = params_new(Qnil, $1, Qnil, $3, escape_Qundef($4)); 04392 04393 } 04394 | f_rest_arg opt_f_block_arg 04395 { 04396 #if 0 04397 $$ = new_args(0, 0, $1, 0, $2); 04398 #endif 04399 $$ = params_new(Qnil, Qnil, $1, Qnil,escape_Qundef($2)); 04400 04401 } 04402 | f_rest_arg ',' f_arg opt_f_block_arg 04403 { 04404 #if 0 04405 $$ = new_args(0, 0, $1, $3, $4); 04406 #endif 04407 $$ = params_new(Qnil, Qnil, $1, $3, escape_Qundef($4)); 04408 04409 } 04410 | f_block_arg 04411 { 04412 #if 0 04413 $$ = new_args(0, 0, 0, 0, $1); 04414 #endif 04415 $$ = params_new(Qnil, Qnil, Qnil, Qnil, $1); 04416 04417 } 04418 | /* none */ 04419 { 04420 #if 0 04421 $$ = new_args(0, 0, 0, 0, 0); 04422 #endif 04423 $$ = params_new(Qnil, Qnil, Qnil, Qnil, Qnil); 04424 04425 } 04426 ; 04427 04428 f_bad_arg : tCONSTANT 04429 { 04430 #if 0 04431 yyerror("formal argument cannot be a constant"); 04432 $$ = 0; 04433 #endif 04434 $$ = dispatch1(param_error, $1); 04435 04436 } 04437 | tIVAR 04438 { 04439 #if 0 04440 yyerror("formal argument cannot be an instance variable"); 04441 $$ = 0; 04442 #endif 04443 $$ = dispatch1(param_error, $1); 04444 04445 } 04446 | tGVAR 04447 { 04448 #if 0 04449 yyerror("formal argument cannot be a global variable"); 04450 $$ = 0; 04451 #endif 04452 $$ = dispatch1(param_error, $1); 04453 04454 } 04455 | tCVAR 04456 { 04457 #if 0 04458 yyerror("formal argument cannot be a class variable"); 04459 $$ = 0; 04460 #endif 04461 $$ = dispatch1(param_error, $1); 04462 04463 } 04464 ; 04465 04466 f_norm_arg : f_bad_arg 04467 | tIDENTIFIER 04468 { 04469 formal_argument(get_id($1)); 04470 $$ = $1; 04471 } 04472 ; 04473 04474 f_arg_item : f_norm_arg 04475 { 04476 arg_var(get_id($1)); 04477 #if 0 04478 $$ = NEW_ARGS_AUX($1, 1); 04479 #endif 04480 $$ = get_value($1); 04481 04482 } 04483 | tLPAREN f_margs rparen 04484 { 04485 ID tid = internal_id(); 04486 arg_var(tid); 04487 #if 0 04488 if (dyna_in_block()) { 04489 $2->nd_value = NEW_DVAR(tid); 04490 } 04491 else { 04492 $2->nd_value = NEW_LVAR(tid); 04493 } 04494 $$ = NEW_ARGS_AUX(tid, 1); 04495 $$->nd_next = $2; 04496 #endif 04497 $$ = dispatch1(mlhs_paren, $2); 04498 04499 } 04500 ; 04501 04502 f_arg : f_arg_item 04503 /* 04504 */ 04505 { 04506 $$ = rb_ary_new3(1, $1); 04507 } 04508 04509 | f_arg ',' f_arg_item 04510 { 04511 #if 0 04512 $$ = $1; 04513 $$->nd_plen++; 04514 $$->nd_next = block_append($$->nd_next, $3->nd_next); 04515 rb_gc_force_recycle((VALUE)$3); 04516 #endif 04517 $$ = rb_ary_push($1, $3); 04518 04519 } 04520 ; 04521 04522 f_opt : tIDENTIFIER '=' arg_value 04523 { 04524 arg_var(formal_argument(get_id($1))); 04525 $$ = assignable($1, $3); 04526 #if 0 04527 $$ = NEW_OPT_ARG(0, $$); 04528 #endif 04529 $$ = rb_assoc_new($$, $3); 04530 04531 } 04532 ; 04533 04534 f_block_opt : tIDENTIFIER '=' primary_value 04535 { 04536 arg_var(formal_argument(get_id($1))); 04537 $$ = assignable($1, $3); 04538 #if 0 04539 $$ = NEW_OPT_ARG(0, $$); 04540 #endif 04541 $$ = rb_assoc_new($$, $3); 04542 04543 } 04544 ; 04545 04546 f_block_optarg : f_block_opt 04547 { 04548 #if 0 04549 $$ = $1; 04550 #endif 04551 $$ = rb_ary_new3(1, $1); 04552 04553 } 04554 | f_block_optarg ',' f_block_opt 04555 { 04556 #if 0 04557 NODE *opts = $1; 04558 04559 while (opts->nd_next) { 04560 opts = opts->nd_next; 04561 } 04562 opts->nd_next = $3; 04563 $$ = $1; 04564 #endif 04565 $$ = rb_ary_push($1, $3); 04566 04567 } 04568 ; 04569 04570 f_optarg : f_opt 04571 { 04572 #if 0 04573 $$ = $1; 04574 #endif 04575 $$ = rb_ary_new3(1, $1); 04576 04577 } 04578 | f_optarg ',' f_opt 04579 { 04580 #if 0 04581 NODE *opts = $1; 04582 04583 while (opts->nd_next) { 04584 opts = opts->nd_next; 04585 } 04586 opts->nd_next = $3; 04587 $$ = $1; 04588 #endif 04589 $$ = rb_ary_push($1, $3); 04590 04591 } 04592 ; 04593 04594 restarg_mark : '*' 04595 | tSTAR 04596 ; 04597 04598 f_rest_arg : restarg_mark tIDENTIFIER 04599 { 04600 #if 0 04601 if (!is_local_id($2)) 04602 yyerror("rest argument must be local variable"); 04603 #endif 04604 arg_var(shadowing_lvar(get_id($2))); 04605 #if 0 04606 $$ = $2; 04607 #endif 04608 $$ = dispatch1(rest_param, $2); 04609 04610 } 04611 | restarg_mark 04612 { 04613 #if 0 04614 $$ = internal_id(); 04615 arg_var($$); 04616 #endif 04617 $$ = dispatch1(rest_param, Qnil); 04618 04619 } 04620 ; 04621 04622 blkarg_mark : '&' 04623 | tAMPER 04624 ; 04625 04626 f_block_arg : blkarg_mark tIDENTIFIER 04627 { 04628 #if 0 04629 if (!is_local_id($2)) 04630 yyerror("block argument must be local variable"); 04631 else if (!dyna_in_block() && local_id($2)) 04632 yyerror("duplicated block argument name"); 04633 #endif 04634 arg_var(shadowing_lvar(get_id($2))); 04635 #if 0 04636 $$ = $2; 04637 #endif 04638 $$ = dispatch1(blockarg, $2); 04639 04640 } 04641 ; 04642 04643 opt_f_block_arg : ',' f_block_arg 04644 { 04645 $$ = $2; 04646 } 04647 | none 04648 { 04649 #if 0 04650 $$ = 0; 04651 #endif 04652 $$ = Qundef; 04653 04654 } 04655 ; 04656 04657 singleton : var_ref 04658 { 04659 #if 0 04660 value_expr($1); 04661 $$ = $1; 04662 if (!$$) $$ = NEW_NIL(); 04663 #endif 04664 $$ = $1; 04665 04666 } 04667 | '(' {lex_state = EXPR_BEG;} expr rparen 04668 { 04669 #if 0 04670 if ($3 == 0) { 04671 yyerror("can't define singleton method for ()."); 04672 } 04673 else { 04674 switch (nd_type($3)) { 04675 case NODE_STR: 04676 case NODE_DSTR: 04677 case NODE_XSTR: 04678 case NODE_DXSTR: 04679 case NODE_DREGX: 04680 case NODE_LIT: 04681 case NODE_ARRAY: 04682 case NODE_ZARRAY: 04683 yyerror("can't define singleton method for literals"); 04684 default: 04685 value_expr($3); 04686 break; 04687 } 04688 } 04689 $$ = $3; 04690 #endif 04691 $$ = dispatch1(paren, $3); 04692 04693 } 04694 ; 04695 04696 assoc_list : none 04697 | assocs trailer 04698 { 04699 #if 0 04700 $$ = $1; 04701 #endif 04702 $$ = dispatch1(assoclist_from_args, $1); 04703 04704 } 04705 ; 04706 04707 assocs : assoc 04708 /* 04709 */ 04710 { 04711 $$ = rb_ary_new3(1, $1); 04712 } 04713 04714 | assocs ',' assoc 04715 { 04716 #if 0 04717 $$ = list_concat($1, $3); 04718 #endif 04719 $$ = rb_ary_push($1, $3); 04720 04721 } 04722 ; 04723 04724 assoc : arg_value tASSOC arg_value 04725 { 04726 #if 0 04727 $$ = list_append(NEW_LIST($1), $3); 04728 #endif 04729 $$ = dispatch2(assoc_new, $1, $3); 04730 04731 } 04732 | tLABEL arg_value 04733 { 04734 #if 0 04735 $$ = list_append(NEW_LIST(NEW_LIT(ID2SYM($1))), $2); 04736 #endif 04737 $$ = dispatch2(assoc_new, $1, $2); 04738 04739 } 04740 ; 04741 04742 operation : tIDENTIFIER 04743 | tCONSTANT 04744 | tFID 04745 ; 04746 04747 operation2 : tIDENTIFIER 04748 | tCONSTANT 04749 | tFID 04750 | op 04751 ; 04752 04753 operation3 : tIDENTIFIER 04754 | tFID 04755 | op 04756 ; 04757 04758 dot_or_colon : '.' 04759 /* 04760 */ 04761 { $$ = $<val>1; } 04762 04763 | tCOLON2 04764 /* 04765 */ 04766 { $$ = $<val>1; } 04767 04768 ; 04769 04770 opt_terms : /* none */ 04771 | terms 04772 ; 04773 04774 opt_nl : /* none */ 04775 | '\n' 04776 ; 04777 04778 rparen : opt_nl ')' 04779 ; 04780 04781 rbracket : opt_nl ']' 04782 ; 04783 04784 trailer : /* none */ 04785 | '\n' 04786 | ',' 04787 ; 04788 04789 term : ';' {yyerrok;} 04790 | '\n' 04791 ; 04792 04793 terms : term 04794 | terms ';' {yyerrok;} 04795 ; 04796 04797 none : /* none */ 04798 { 04799 #if 0 04800 $$ = 0; 04801 #endif 04802 $$ = Qundef; 04803 04804 } 04805 ; 04806 %% 04807 # undef parser 04808 # undef yylex 04809 # undef yylval 04810 # define yylval (*((YYSTYPE*)(parser->parser_yylval))) 04811 04812 static int parser_regx_options(struct parser_params*); 04813 static int parser_tokadd_string(struct parser_params*,int,int,int,long*,rb_encoding**); 04814 static void parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc); 04815 static int parser_parse_string(struct parser_params*,NODE*); 04816 static int parser_here_document(struct parser_params*,NODE*); 04817 04818 04819 # define nextc() parser_nextc(parser) 04820 # define pushback(c) parser_pushback(parser, c) 04821 # define newtok() parser_newtok(parser) 04822 # define tokspace(n) parser_tokspace(parser, n) 04823 # define tokadd(c) parser_tokadd(parser, c) 04824 # define tok_hex(numlen) parser_tok_hex(parser, numlen) 04825 # define read_escape(flags,e) parser_read_escape(parser, flags, e) 04826 # define tokadd_escape(e) parser_tokadd_escape(parser, e) 04827 # define regx_options() parser_regx_options(parser) 04828 # define tokadd_string(f,t,p,n,e) parser_tokadd_string(parser,f,t,p,n,e) 04829 # define parse_string(n) parser_parse_string(parser,n) 04830 # define tokaddmbc(c, enc) parser_tokaddmbc(parser, c, enc) 04831 # define here_document(n) parser_here_document(parser,n) 04832 # define heredoc_identifier() parser_heredoc_identifier(parser) 04833 # define heredoc_restore(n) parser_heredoc_restore(parser,n) 04834 # define whole_match_p(e,l,i) parser_whole_match_p(parser,e,l,i) 04835 04836 #ifndef RIPPER 04837 # define set_yylval_str(x) yylval.node = NEW_STR(x) 04838 # define set_yylval_num(x) yylval.num = x 04839 # define set_yylval_id(x) yylval.id = x 04840 # define set_yylval_name(x) yylval.id = x 04841 # define set_yylval_literal(x) yylval.node = NEW_LIT(x) 04842 # define set_yylval_node(x) yylval.node = x 04843 # define yylval_id() yylval.id 04844 #else 04845 static inline VALUE 04846 ripper_yylval_id(ID x) 04847 { 04848 return (VALUE)NEW_LASGN(x, ID2SYM(x)); 04849 } 04850 # define set_yylval_str(x) (void)(x) 04851 # define set_yylval_num(x) (void)(x) 04852 # define set_yylval_id(x) (void)(x) 04853 # define set_yylval_name(x) (void)(yylval.val = ripper_yylval_id(x)) 04854 # define set_yylval_literal(x) (void)(x) 04855 # define set_yylval_node(x) (void)(x) 04856 # define yylval_id() yylval.id 04857 #endif 04858 04859 #ifndef RIPPER 04860 #define ripper_flush(p) (void)(p) 04861 #else 04862 #define ripper_flush(p) (p->tokp = p->parser_lex_p) 04863 04864 #define yylval_rval *(RB_TYPE_P(yylval.val, T_NODE) ? &yylval.node->nd_rval : &yylval.val) 04865 04866 static int 04867 ripper_has_scan_event(struct parser_params *parser) 04868 { 04869 04870 if (lex_p < parser->tokp) rb_raise(rb_eRuntimeError, "lex_p < tokp"); 04871 return lex_p > parser->tokp; 04872 } 04873 04874 static VALUE 04875 ripper_scan_event_val(struct parser_params *parser, int t) 04876 { 04877 VALUE str = STR_NEW(parser->tokp, lex_p - parser->tokp); 04878 VALUE rval = ripper_dispatch1(parser, ripper_token2eventid(t), str); 04879 ripper_flush(parser); 04880 return rval; 04881 } 04882 04883 static void 04884 ripper_dispatch_scan_event(struct parser_params *parser, int t) 04885 { 04886 if (!ripper_has_scan_event(parser)) return; 04887 yylval_rval = ripper_scan_event_val(parser, t); 04888 } 04889 04890 static void 04891 ripper_dispatch_ignored_scan_event(struct parser_params *parser, int t) 04892 { 04893 if (!ripper_has_scan_event(parser)) return; 04894 (void)ripper_scan_event_val(parser, t); 04895 } 04896 04897 static void 04898 ripper_dispatch_delayed_token(struct parser_params *parser, int t) 04899 { 04900 int saved_line = ruby_sourceline; 04901 const char *saved_tokp = parser->tokp; 04902 04903 ruby_sourceline = parser->delayed_line; 04904 parser->tokp = lex_pbeg + parser->delayed_col; 04905 yylval_rval = ripper_dispatch1(parser, ripper_token2eventid(t), parser->delayed); 04906 parser->delayed = Qnil; 04907 ruby_sourceline = saved_line; 04908 parser->tokp = saved_tokp; 04909 } 04910 #endif /* RIPPER */ 04911 04912 #include "ruby/regex.h" 04913 #include "ruby/util.h" 04914 04915 /* We remove any previous definition of `SIGN_EXTEND_CHAR', 04916 since ours (we hope) works properly with all combinations of 04917 machines, compilers, `char' and `unsigned char' argument types. 04918 (Per Bothner suggested the basic approach.) */ 04919 #undef SIGN_EXTEND_CHAR 04920 #if __STDC__ 04921 # define SIGN_EXTEND_CHAR(c) ((signed char)(c)) 04922 #else /* not __STDC__ */ 04923 /* As in Harbison and Steele. */ 04924 # define SIGN_EXTEND_CHAR(c) ((((unsigned char)(c)) ^ 128) - 128) 04925 #endif 04926 04927 #define parser_encoding_name() (parser->enc->name) 04928 #define parser_mbclen() mbclen((lex_p-1),lex_pend,parser->enc) 04929 #define parser_precise_mbclen() rb_enc_precise_mbclen((lex_p-1),lex_pend,parser->enc) 04930 #define is_identchar(p,e,enc) (rb_enc_isalnum(*p,enc) || (*p) == '_' || !ISASCII(*p)) 04931 #define parser_is_identchar() (!parser->eofp && is_identchar((lex_p-1),lex_pend,parser->enc)) 04932 04933 #define parser_isascii() ISASCII(*(lex_p-1)) 04934 04935 #ifndef RIPPER 04936 static int 04937 token_info_get_column(struct parser_params *parser, const char *token) 04938 { 04939 int column = 1; 04940 const char *p, *pend = lex_p - strlen(token); 04941 for (p = lex_pbeg; p < pend; p++) { 04942 if (*p == '\t') { 04943 column = (((column - 1) / 8) + 1) * 8; 04944 } 04945 column++; 04946 } 04947 return column; 04948 } 04949 04950 static int 04951 token_info_has_nonspaces(struct parser_params *parser, const char *token) 04952 { 04953 const char *p, *pend = lex_p - strlen(token); 04954 for (p = lex_pbeg; p < pend; p++) { 04955 if (*p != ' ' && *p != '\t') { 04956 return 1; 04957 } 04958 } 04959 return 0; 04960 } 04961 04962 #undef token_info_push 04963 static void 04964 token_info_push(struct parser_params *parser, const char *token) 04965 { 04966 token_info *ptinfo; 04967 04968 if (compile_for_eval) return; 04969 ptinfo = ALLOC(token_info); 04970 ptinfo->token = token; 04971 ptinfo->linenum = ruby_sourceline; 04972 ptinfo->column = token_info_get_column(parser, token); 04973 ptinfo->nonspc = token_info_has_nonspaces(parser, token); 04974 ptinfo->next = parser->parser_token_info; 04975 04976 parser->parser_token_info = ptinfo; 04977 } 04978 04979 #undef token_info_pop 04980 static void 04981 token_info_pop(struct parser_params *parser, const char *token) 04982 { 04983 int linenum; 04984 token_info *ptinfo = parser->parser_token_info; 04985 04986 if (!ptinfo) return; 04987 parser->parser_token_info = ptinfo->next; 04988 if (token_info_get_column(parser, token) == ptinfo->column) { /* OK */ 04989 goto finish; 04990 } 04991 linenum = ruby_sourceline; 04992 if (linenum == ptinfo->linenum) { /* SKIP */ 04993 goto finish; 04994 } 04995 if (token_info_has_nonspaces(parser, token) || ptinfo->nonspc) { /* SKIP */ 04996 goto finish; 04997 } 04998 rb_compile_warning(ruby_sourcefile, linenum, 04999 "mismatched indentations at '%s' with '%s' at %d", 05000 token, ptinfo->token, ptinfo->linenum); 05001 05002 finish: 05003 xfree(ptinfo); 05004 } 05005 #endif /* RIPPER */ 05006 05007 static int 05008 parser_yyerror(struct parser_params *parser, const char *msg) 05009 { 05010 #ifndef RIPPER 05011 const int max_line_margin = 30; 05012 const char *p, *pe; 05013 char *buf; 05014 long len; 05015 int i; 05016 05017 compile_error(PARSER_ARG "%s", msg); 05018 p = lex_p; 05019 while (lex_pbeg <= p) { 05020 if (*p == '\n') break; 05021 p--; 05022 } 05023 p++; 05024 05025 pe = lex_p; 05026 while (pe < lex_pend) { 05027 if (*pe == '\n') break; 05028 pe++; 05029 } 05030 05031 len = pe - p; 05032 if (len > 4) { 05033 char *p2; 05034 const char *pre = "", *post = ""; 05035 05036 if (len > max_line_margin * 2 + 10) { 05037 if (lex_p - p > max_line_margin) { 05038 p = rb_enc_prev_char(p, lex_p - max_line_margin, pe, rb_enc_get(lex_lastline)); 05039 pre = "..."; 05040 } 05041 if (pe - lex_p > max_line_margin) { 05042 pe = rb_enc_prev_char(lex_p, lex_p + max_line_margin, pe, rb_enc_get(lex_lastline)); 05043 post = "..."; 05044 } 05045 len = pe - p; 05046 } 05047 buf = ALLOCA_N(char, len+2); 05048 MEMCPY(buf, p, char, len); 05049 buf[len] = '\0'; 05050 rb_compile_error_append("%s%s%s", pre, buf, post); 05051 05052 i = (int)(lex_p - p); 05053 p2 = buf; pe = buf + len; 05054 05055 while (p2 < pe) { 05056 if (*p2 != '\t') *p2 = ' '; 05057 p2++; 05058 } 05059 buf[i] = '^'; 05060 buf[i+1] = '\0'; 05061 rb_compile_error_append("%s%s", pre, buf); 05062 } 05063 #else 05064 dispatch1(parse_error, STR_NEW2(msg)); 05065 #endif /* !RIPPER */ 05066 return 0; 05067 } 05068 05069 static void parser_prepare(struct parser_params *parser); 05070 05071 #ifndef RIPPER 05072 VALUE ruby_suppress_tracing(VALUE (*func)(VALUE, int), VALUE arg, int always); 05073 05074 static VALUE 05075 debug_lines(const char *f) 05076 { 05077 ID script_lines; 05078 CONST_ID(script_lines, "SCRIPT_LINES__"); 05079 if (rb_const_defined_at(rb_cObject, script_lines)) { 05080 VALUE hash = rb_const_get_at(rb_cObject, script_lines); 05081 if (TYPE(hash) == T_HASH) { 05082 VALUE fname = rb_str_new2(f); 05083 VALUE lines = rb_ary_new(); 05084 rb_hash_aset(hash, fname, lines); 05085 return lines; 05086 } 05087 } 05088 return 0; 05089 } 05090 05091 static VALUE 05092 coverage(const char *f, int n) 05093 { 05094 extern VALUE rb_get_coverages(void); 05095 VALUE coverages = rb_get_coverages(); 05096 if (RTEST(coverages) && RBASIC(coverages)->klass == 0) { 05097 VALUE fname = rb_str_new2(f); 05098 VALUE lines = rb_ary_new2(n); 05099 int i; 05100 RBASIC(lines)->klass = 0; 05101 for (i = 0; i < n; i++) RARRAY_PTR(lines)[i] = Qnil; 05102 RARRAY(lines)->as.heap.len = n; 05103 rb_hash_aset(coverages, fname, lines); 05104 return lines; 05105 } 05106 return 0; 05107 } 05108 05109 static int 05110 e_option_supplied(struct parser_params *parser) 05111 { 05112 return strcmp(ruby_sourcefile, "-e") == 0; 05113 } 05114 05115 static VALUE 05116 yycompile0(VALUE arg, int tracing) 05117 { 05118 int n; 05119 NODE *tree; 05120 struct parser_params *parser = (struct parser_params *)arg; 05121 05122 if (!compile_for_eval && rb_safe_level() == 0) { 05123 ruby_debug_lines = debug_lines(ruby_sourcefile); 05124 if (ruby_debug_lines && ruby_sourceline > 0) { 05125 VALUE str = STR_NEW0(); 05126 n = ruby_sourceline; 05127 do { 05128 rb_ary_push(ruby_debug_lines, str); 05129 } while (--n); 05130 } 05131 05132 if (!e_option_supplied(parser)) { 05133 ruby_coverage = coverage(ruby_sourcefile, ruby_sourceline); 05134 } 05135 } 05136 05137 parser_prepare(parser); 05138 deferred_nodes = 0; 05139 n = yyparse((void*)parser); 05140 ruby_debug_lines = 0; 05141 ruby_coverage = 0; 05142 compile_for_eval = 0; 05143 05144 lex_strterm = 0; 05145 lex_p = lex_pbeg = lex_pend = 0; 05146 lex_lastline = lex_nextline = 0; 05147 if (parser->nerr) { 05148 return 0; 05149 } 05150 tree = ruby_eval_tree; 05151 if (!tree) { 05152 tree = NEW_NIL(); 05153 } 05154 else if (ruby_eval_tree_begin) { 05155 tree->nd_body = NEW_PRELUDE(ruby_eval_tree_begin, tree->nd_body); 05156 } 05157 return (VALUE)tree; 05158 } 05159 05160 static NODE* 05161 yycompile(struct parser_params *parser, const char *f, int line) 05162 { 05163 ruby_sourcefile = ruby_strdup(f); 05164 ruby_sourceline = line - 1; 05165 return (NODE *)ruby_suppress_tracing(yycompile0, (VALUE)parser, TRUE); 05166 } 05167 #endif /* !RIPPER */ 05168 05169 static rb_encoding * 05170 must_be_ascii_compatible(VALUE s) 05171 { 05172 rb_encoding *enc = rb_enc_get(s); 05173 if (!rb_enc_asciicompat(enc)) { 05174 rb_raise(rb_eArgError, "invalid source encoding"); 05175 } 05176 return enc; 05177 } 05178 05179 static VALUE 05180 lex_get_str(struct parser_params *parser, VALUE s) 05181 { 05182 char *beg, *end, *pend; 05183 rb_encoding *enc = must_be_ascii_compatible(s); 05184 05185 beg = RSTRING_PTR(s); 05186 if (lex_gets_ptr) { 05187 if (RSTRING_LEN(s) == lex_gets_ptr) return Qnil; 05188 beg += lex_gets_ptr; 05189 } 05190 pend = RSTRING_PTR(s) + RSTRING_LEN(s); 05191 end = beg; 05192 while (end < pend) { 05193 if (*end++ == '\n') break; 05194 } 05195 lex_gets_ptr = end - RSTRING_PTR(s); 05196 return rb_enc_str_new(beg, end - beg, enc); 05197 } 05198 05199 static VALUE 05200 lex_getline(struct parser_params *parser) 05201 { 05202 VALUE line = (*parser->parser_lex_gets)(parser, parser->parser_lex_input); 05203 if (NIL_P(line)) return line; 05204 must_be_ascii_compatible(line); 05205 #ifndef RIPPER 05206 if (ruby_debug_lines) { 05207 rb_ary_push(ruby_debug_lines, line); 05208 } 05209 if (ruby_coverage) { 05210 rb_ary_push(ruby_coverage, Qnil); 05211 } 05212 #endif 05213 return line; 05214 } 05215 05216 static const rb_data_type_t parser_data_type; 05217 05218 #ifndef RIPPER 05219 static NODE* 05220 parser_compile_string(volatile VALUE vparser, const char *f, VALUE s, int line) 05221 { 05222 struct parser_params *parser; 05223 NODE *node; 05224 volatile VALUE tmp; 05225 05226 TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); 05227 lex_gets = lex_get_str; 05228 lex_gets_ptr = 0; 05229 lex_input = s; 05230 lex_pbeg = lex_p = lex_pend = 0; 05231 compile_for_eval = rb_parse_in_eval(); 05232 05233 node = yycompile(parser, f, line); 05234 tmp = vparser; /* prohibit tail call optimization */ 05235 05236 return node; 05237 } 05238 05239 NODE* 05240 rb_compile_string(const char *f, VALUE s, int line) 05241 { 05242 must_be_ascii_compatible(s); 05243 return parser_compile_string(rb_parser_new(), f, s, line); 05244 } 05245 05246 NODE* 05247 rb_parser_compile_string(volatile VALUE vparser, const char *f, VALUE s, int line) 05248 { 05249 must_be_ascii_compatible(s); 05250 return parser_compile_string(vparser, f, s, line); 05251 } 05252 05253 NODE* 05254 rb_compile_cstr(const char *f, const char *s, int len, int line) 05255 { 05256 VALUE str = rb_str_new(s, len); 05257 return parser_compile_string(rb_parser_new(), f, str, line); 05258 } 05259 05260 NODE* 05261 rb_parser_compile_cstr(volatile VALUE vparser, const char *f, const char *s, int len, int line) 05262 { 05263 VALUE str = rb_str_new(s, len); 05264 return parser_compile_string(vparser, f, str, line); 05265 } 05266 05267 static VALUE 05268 lex_io_gets(struct parser_params *parser, VALUE io) 05269 { 05270 return rb_io_gets(io); 05271 } 05272 05273 NODE* 05274 rb_compile_file(const char *f, VALUE file, int start) 05275 { 05276 VALUE volatile vparser = rb_parser_new(); 05277 05278 return rb_parser_compile_file(vparser, f, file, start); 05279 } 05280 05281 NODE* 05282 rb_parser_compile_file(volatile VALUE vparser, const char *f, VALUE file, int start) 05283 { 05284 struct parser_params *parser; 05285 volatile VALUE tmp; 05286 NODE *node; 05287 05288 TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); 05289 lex_gets = lex_io_gets; 05290 lex_input = file; 05291 lex_pbeg = lex_p = lex_pend = 0; 05292 compile_for_eval = rb_parse_in_eval(); 05293 05294 node = yycompile(parser, f, start); 05295 tmp = vparser; /* prohibit tail call optimization */ 05296 05297 return node; 05298 } 05299 #endif /* !RIPPER */ 05300 05301 #define STR_FUNC_ESCAPE 0x01 05302 #define STR_FUNC_EXPAND 0x02 05303 #define STR_FUNC_REGEXP 0x04 05304 #define STR_FUNC_QWORDS 0x08 05305 #define STR_FUNC_SYMBOL 0x10 05306 #define STR_FUNC_INDENT 0x20 05307 05308 enum string_type { 05309 str_squote = (0), 05310 str_dquote = (STR_FUNC_EXPAND), 05311 str_xquote = (STR_FUNC_EXPAND), 05312 str_regexp = (STR_FUNC_REGEXP|STR_FUNC_ESCAPE|STR_FUNC_EXPAND), 05313 str_sword = (STR_FUNC_QWORDS), 05314 str_dword = (STR_FUNC_QWORDS|STR_FUNC_EXPAND), 05315 str_ssym = (STR_FUNC_SYMBOL), 05316 str_dsym = (STR_FUNC_SYMBOL|STR_FUNC_EXPAND) 05317 }; 05318 05319 static VALUE 05320 parser_str_new(const char *p, long n, rb_encoding *enc, int func, rb_encoding *enc0) 05321 { 05322 VALUE str; 05323 05324 str = rb_enc_str_new(p, n, enc); 05325 if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) { 05326 if (rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) { 05327 } 05328 else if (enc0 == rb_usascii_encoding() && enc != rb_utf8_encoding()) { 05329 rb_enc_associate(str, rb_ascii8bit_encoding()); 05330 } 05331 } 05332 05333 return str; 05334 } 05335 05336 #define lex_goto_eol(parser) (parser->parser_lex_p = parser->parser_lex_pend) 05337 #define peek(c) (lex_p < lex_pend && (c) == *lex_p) 05338 05339 static inline int 05340 parser_nextc(struct parser_params *parser) 05341 { 05342 int c; 05343 05344 if (lex_p == lex_pend) { 05345 VALUE v = lex_nextline; 05346 lex_nextline = 0; 05347 if (!v) { 05348 if (parser->eofp) 05349 return -1; 05350 05351 if (!lex_input || NIL_P(v = lex_getline(parser))) { 05352 parser->eofp = Qtrue; 05353 lex_goto_eol(parser); 05354 return -1; 05355 } 05356 } 05357 { 05358 #ifdef RIPPER 05359 if (parser->tokp < lex_pend) { 05360 if (NIL_P(parser->delayed)) { 05361 parser->delayed = rb_str_buf_new(1024); 05362 rb_str_buf_cat(parser->delayed, 05363 parser->tokp, lex_pend - parser->tokp); 05364 parser->delayed_line = ruby_sourceline; 05365 parser->delayed_col = (int)(parser->tokp - lex_pbeg); 05366 } 05367 else { 05368 rb_str_buf_cat(parser->delayed, 05369 parser->tokp, lex_pend - parser->tokp); 05370 } 05371 } 05372 #endif 05373 if (heredoc_end > 0) { 05374 ruby_sourceline = heredoc_end; 05375 heredoc_end = 0; 05376 } 05377 ruby_sourceline++; 05378 parser->line_count++; 05379 lex_pbeg = lex_p = RSTRING_PTR(v); 05380 lex_pend = lex_p + RSTRING_LEN(v); 05381 ripper_flush(parser); 05382 lex_lastline = v; 05383 } 05384 } 05385 c = (unsigned char)*lex_p++; 05386 if (c == '\r' && peek('\n')) { 05387 lex_p++; 05388 c = '\n'; 05389 } 05390 05391 return c; 05392 } 05393 05394 static void 05395 parser_pushback(struct parser_params *parser, int c) 05396 { 05397 if (c == -1) return; 05398 lex_p--; 05399 if (lex_p > lex_pbeg && lex_p[0] == '\n' && lex_p[-1] == '\r') { 05400 lex_p--; 05401 } 05402 } 05403 05404 #define was_bol() (lex_p == lex_pbeg + 1) 05405 05406 #define tokfix() (tokenbuf[tokidx]='\0') 05407 #define tok() tokenbuf 05408 #define toklen() tokidx 05409 #define toklast() (tokidx>0?tokenbuf[tokidx-1]:0) 05410 05411 static char* 05412 parser_newtok(struct parser_params *parser) 05413 { 05414 tokidx = 0; 05415 if (!tokenbuf) { 05416 toksiz = 60; 05417 tokenbuf = ALLOC_N(char, 60); 05418 } 05419 if (toksiz > 4096) { 05420 toksiz = 60; 05421 REALLOC_N(tokenbuf, char, 60); 05422 } 05423 return tokenbuf; 05424 } 05425 05426 static char * 05427 parser_tokspace(struct parser_params *parser, int n) 05428 { 05429 tokidx += n; 05430 05431 if (tokidx >= toksiz) { 05432 do {toksiz *= 2;} while (toksiz < tokidx); 05433 REALLOC_N(tokenbuf, char, toksiz); 05434 } 05435 return &tokenbuf[tokidx-n]; 05436 } 05437 05438 static void 05439 parser_tokadd(struct parser_params *parser, int c) 05440 { 05441 tokenbuf[tokidx++] = (char)c; 05442 if (tokidx >= toksiz) { 05443 toksiz *= 2; 05444 REALLOC_N(tokenbuf, char, toksiz); 05445 } 05446 } 05447 05448 static int 05449 parser_tok_hex(struct parser_params *parser, size_t *numlen) 05450 { 05451 int c; 05452 05453 c = scan_hex(lex_p, 2, numlen); 05454 if (!*numlen) { 05455 yyerror("invalid hex escape"); 05456 return 0; 05457 } 05458 lex_p += *numlen; 05459 return c; 05460 } 05461 05462 #define tokcopy(n) memcpy(tokspace(n), lex_p - (n), (n)) 05463 05464 static int 05465 parser_tokadd_utf8(struct parser_params *parser, rb_encoding **encp, 05466 int string_literal, int symbol_literal, int regexp_literal) 05467 { 05468 /* 05469 * If string_literal is true, then we allow multiple codepoints 05470 * in \u{}, and add the codepoints to the current token. 05471 * Otherwise we're parsing a character literal and return a single 05472 * codepoint without adding it 05473 */ 05474 05475 int codepoint; 05476 size_t numlen; 05477 05478 if (regexp_literal) { tokadd('\\'); tokadd('u'); } 05479 05480 if (peek('{')) { /* handle \u{...} form */ 05481 do { 05482 if (regexp_literal) { tokadd(*lex_p); } 05483 nextc(); 05484 codepoint = scan_hex(lex_p, 6, &numlen); 05485 if (numlen == 0) { 05486 yyerror("invalid Unicode escape"); 05487 return 0; 05488 } 05489 if (codepoint > 0x10ffff) { 05490 yyerror("invalid Unicode codepoint (too large)"); 05491 return 0; 05492 } 05493 lex_p += numlen; 05494 if (regexp_literal) { 05495 tokcopy((int)numlen); 05496 } 05497 else if (codepoint >= 0x80) { 05498 *encp = UTF8_ENC(); 05499 if (string_literal) tokaddmbc(codepoint, *encp); 05500 } 05501 else if (string_literal) { 05502 tokadd(codepoint); 05503 } 05504 } while (string_literal && (peek(' ') || peek('\t'))); 05505 05506 if (!peek('}')) { 05507 yyerror("unterminated Unicode escape"); 05508 return 0; 05509 } 05510 05511 if (regexp_literal) { tokadd('}'); } 05512 nextc(); 05513 } 05514 else { /* handle \uxxxx form */ 05515 codepoint = scan_hex(lex_p, 4, &numlen); 05516 if (numlen < 4) { 05517 yyerror("invalid Unicode escape"); 05518 return 0; 05519 } 05520 lex_p += 4; 05521 if (regexp_literal) { 05522 tokcopy(4); 05523 } 05524 else if (codepoint >= 0x80) { 05525 *encp = UTF8_ENC(); 05526 if (string_literal) tokaddmbc(codepoint, *encp); 05527 } 05528 else if (string_literal) { 05529 tokadd(codepoint); 05530 } 05531 } 05532 05533 return codepoint; 05534 } 05535 05536 #define ESCAPE_CONTROL 1 05537 #define ESCAPE_META 2 05538 05539 static int 05540 parser_read_escape(struct parser_params *parser, int flags, 05541 rb_encoding **encp) 05542 { 05543 int c; 05544 size_t numlen; 05545 05546 switch (c = nextc()) { 05547 case '\\': /* Backslash */ 05548 return c; 05549 05550 case 'n': /* newline */ 05551 return '\n'; 05552 05553 case 't': /* horizontal tab */ 05554 return '\t'; 05555 05556 case 'r': /* carriage-return */ 05557 return '\r'; 05558 05559 case 'f': /* form-feed */ 05560 return '\f'; 05561 05562 case 'v': /* vertical tab */ 05563 return '\13'; 05564 05565 case 'a': /* alarm(bell) */ 05566 return '\007'; 05567 05568 case 'e': /* escape */ 05569 return 033; 05570 05571 case '0': case '1': case '2': case '3': /* octal constant */ 05572 case '4': case '5': case '6': case '7': 05573 if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof; 05574 pushback(c); 05575 c = scan_oct(lex_p, 3, &numlen); 05576 lex_p += numlen; 05577 return c; 05578 05579 case 'x': /* hex constant */ 05580 if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof; 05581 c = tok_hex(&numlen); 05582 if (numlen == 0) return 0; 05583 return c; 05584 05585 case 'b': /* backspace */ 05586 return '\010'; 05587 05588 case 's': /* space */ 05589 return ' '; 05590 05591 case 'M': 05592 if (flags & ESCAPE_META) goto eof; 05593 if ((c = nextc()) != '-') { 05594 pushback(c); 05595 goto eof; 05596 } 05597 if ((c = nextc()) == '\\') { 05598 if (peek('u')) goto eof; 05599 return read_escape(flags|ESCAPE_META, encp) | 0x80; 05600 } 05601 else if (c == -1 || !ISASCII(c)) goto eof; 05602 else { 05603 return ((c & 0xff) | 0x80); 05604 } 05605 05606 case 'C': 05607 if ((c = nextc()) != '-') { 05608 pushback(c); 05609 goto eof; 05610 } 05611 case 'c': 05612 if (flags & ESCAPE_CONTROL) goto eof; 05613 if ((c = nextc())== '\\') { 05614 if (peek('u')) goto eof; 05615 c = read_escape(flags|ESCAPE_CONTROL, encp); 05616 } 05617 else if (c == '?') 05618 return 0177; 05619 else if (c == -1 || !ISASCII(c)) goto eof; 05620 return c & 0x9f; 05621 05622 eof: 05623 case -1: 05624 yyerror("Invalid escape character syntax"); 05625 return '\0'; 05626 05627 default: 05628 return c; 05629 } 05630 } 05631 05632 static void 05633 parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc) 05634 { 05635 int len = rb_enc_codelen(c, enc); 05636 rb_enc_mbcput(c, tokspace(len), enc); 05637 } 05638 05639 static int 05640 parser_tokadd_escape(struct parser_params *parser, rb_encoding **encp) 05641 { 05642 int c; 05643 int flags = 0; 05644 size_t numlen; 05645 05646 first: 05647 switch (c = nextc()) { 05648 case '\n': 05649 return 0; /* just ignore */ 05650 05651 case '0': case '1': case '2': case '3': /* octal constant */ 05652 case '4': case '5': case '6': case '7': 05653 if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof; 05654 { 05655 ruby_scan_oct(--lex_p, 3, &numlen); 05656 if (numlen == 0) goto eof; 05657 lex_p += numlen; 05658 tokcopy((int)numlen + 1); 05659 } 05660 return 0; 05661 05662 case 'x': /* hex constant */ 05663 if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof; 05664 { 05665 tok_hex(&numlen); 05666 if (numlen == 0) goto eof; 05667 tokcopy((int)numlen + 2); 05668 } 05669 return 0; 05670 05671 case 'M': 05672 if (flags & ESCAPE_META) goto eof; 05673 if ((c = nextc()) != '-') { 05674 pushback(c); 05675 goto eof; 05676 } 05677 tokcopy(3); 05678 flags |= ESCAPE_META; 05679 goto escaped; 05680 05681 case 'C': 05682 if (flags & ESCAPE_CONTROL) goto eof; 05683 if ((c = nextc()) != '-') { 05684 pushback(c); 05685 goto eof; 05686 } 05687 tokcopy(3); 05688 goto escaped; 05689 05690 case 'c': 05691 if (flags & ESCAPE_CONTROL) goto eof; 05692 tokcopy(2); 05693 flags |= ESCAPE_CONTROL; 05694 escaped: 05695 if ((c = nextc()) == '\\') { 05696 goto first; 05697 } 05698 else if (c == -1) goto eof; 05699 tokadd(c); 05700 return 0; 05701 05702 eof: 05703 case -1: 05704 yyerror("Invalid escape character syntax"); 05705 return -1; 05706 05707 default: 05708 tokadd('\\'); 05709 tokadd(c); 05710 } 05711 return 0; 05712 } 05713 05714 extern int rb_char_to_option_kcode(int c, int *option, int *kcode); 05715 05716 static int 05717 parser_regx_options(struct parser_params *parser) 05718 { 05719 int kcode = 0; 05720 int kopt = 0; 05721 int options = 0; 05722 int c, opt, kc; 05723 05724 newtok(); 05725 while (c = nextc(), ISALPHA(c)) { 05726 if (c == 'o') { 05727 options |= RE_OPTION_ONCE; 05728 } 05729 else if (rb_char_to_option_kcode(c, &opt, &kc)) { 05730 if (kc >= 0) { 05731 if (kc != rb_ascii8bit_encindex()) kcode = c; 05732 kopt = opt; 05733 } 05734 else { 05735 options |= opt; 05736 } 05737 } 05738 else { 05739 tokadd(c); 05740 } 05741 } 05742 options |= kopt; 05743 pushback(c); 05744 if (toklen()) { 05745 tokfix(); 05746 compile_error(PARSER_ARG "unknown regexp option%s - %s", 05747 toklen() > 1 ? "s" : "", tok()); 05748 } 05749 return options | RE_OPTION_ENCODING(kcode); 05750 } 05751 05752 static void 05753 dispose_string(VALUE str) 05754 { 05755 /* TODO: should use another API? */ 05756 if (RBASIC(str)->flags & RSTRING_NOEMBED) 05757 xfree(RSTRING_PTR(str)); 05758 rb_gc_force_recycle(str); 05759 } 05760 05761 static int 05762 parser_tokadd_mbchar(struct parser_params *parser, int c) 05763 { 05764 int len = parser_precise_mbclen(); 05765 if (!MBCLEN_CHARFOUND_P(len)) { 05766 compile_error(PARSER_ARG "invalid multibyte char (%s)", parser_encoding_name()); 05767 return -1; 05768 } 05769 tokadd(c); 05770 lex_p += --len; 05771 if (len > 0) tokcopy(len); 05772 return c; 05773 } 05774 05775 #define tokadd_mbchar(c) parser_tokadd_mbchar(parser, c) 05776 05777 static int 05778 parser_tokadd_string(struct parser_params *parser, 05779 int func, int term, int paren, long *nest, 05780 rb_encoding **encp) 05781 { 05782 int c; 05783 int has_nonascii = 0; 05784 rb_encoding *enc = *encp; 05785 char *errbuf = 0; 05786 static const char mixed_msg[] = "%s mixed within %s source"; 05787 05788 #define mixed_error(enc1, enc2) if (!errbuf) { \ 05789 size_t len = sizeof(mixed_msg) - 4; \ 05790 len += strlen(rb_enc_name(enc1)); \ 05791 len += strlen(rb_enc_name(enc2)); \ 05792 errbuf = ALLOCA_N(char, len); \ 05793 snprintf(errbuf, len, mixed_msg, \ 05794 rb_enc_name(enc1), \ 05795 rb_enc_name(enc2)); \ 05796 yyerror(errbuf); \ 05797 } 05798 #define mixed_escape(beg, enc1, enc2) do { \ 05799 const char *pos = lex_p; \ 05800 lex_p = beg; \ 05801 mixed_error(enc1, enc2); \ 05802 lex_p = pos; \ 05803 } while (0) 05804 05805 while ((c = nextc()) != -1) { 05806 if (paren && c == paren) { 05807 ++*nest; 05808 } 05809 else if (c == term) { 05810 if (!nest || !*nest) { 05811 pushback(c); 05812 break; 05813 } 05814 --*nest; 05815 } 05816 else if ((func & STR_FUNC_EXPAND) && c == '#' && lex_p < lex_pend) { 05817 int c2 = *lex_p; 05818 if (c2 == '$' || c2 == '@' || c2 == '{') { 05819 pushback(c); 05820 break; 05821 } 05822 } 05823 else if (c == '\\') { 05824 const char *beg = lex_p - 1; 05825 c = nextc(); 05826 switch (c) { 05827 case '\n': 05828 if (func & STR_FUNC_QWORDS) break; 05829 if (func & STR_FUNC_EXPAND) continue; 05830 tokadd('\\'); 05831 break; 05832 05833 case '\\': 05834 if (func & STR_FUNC_ESCAPE) tokadd(c); 05835 break; 05836 05837 case 'u': 05838 if ((func & STR_FUNC_EXPAND) == 0) { 05839 tokadd('\\'); 05840 break; 05841 } 05842 parser_tokadd_utf8(parser, &enc, 1, 05843 func & STR_FUNC_SYMBOL, 05844 func & STR_FUNC_REGEXP); 05845 if (has_nonascii && enc != *encp) { 05846 mixed_escape(beg, enc, *encp); 05847 } 05848 continue; 05849 05850 default: 05851 if (func & STR_FUNC_REGEXP) { 05852 pushback(c); 05853 if ((c = tokadd_escape(&enc)) < 0) 05854 return -1; 05855 if (has_nonascii && enc != *encp) { 05856 mixed_escape(beg, enc, *encp); 05857 } 05858 continue; 05859 } 05860 else if (func & STR_FUNC_EXPAND) { 05861 pushback(c); 05862 if (func & STR_FUNC_ESCAPE) tokadd('\\'); 05863 c = read_escape(0, &enc); 05864 } 05865 else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) { 05866 /* ignore backslashed spaces in %w */ 05867 } 05868 else if (c != term && !(paren && c == paren)) { 05869 tokadd('\\'); 05870 pushback(c); 05871 continue; 05872 } 05873 } 05874 } 05875 else if (!parser_isascii()) { 05876 has_nonascii = 1; 05877 if (enc != *encp) { 05878 mixed_error(enc, *encp); 05879 continue; 05880 } 05881 if (tokadd_mbchar(c) == -1) return -1; 05882 continue; 05883 } 05884 else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) { 05885 pushback(c); 05886 break; 05887 } 05888 if (c & 0x80) { 05889 has_nonascii = 1; 05890 if (enc != *encp) { 05891 mixed_error(enc, *encp); 05892 continue; 05893 } 05894 } 05895 tokadd(c); 05896 } 05897 *encp = enc; 05898 return c; 05899 } 05900 05901 #define NEW_STRTERM(func, term, paren) \ 05902 rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0) 05903 05904 static int 05905 parser_parse_string(struct parser_params *parser, NODE *quote) 05906 { 05907 int func = (int)quote->nd_func; 05908 int term = nd_term(quote); 05909 int paren = nd_paren(quote); 05910 int c, space = 0; 05911 rb_encoding *enc = parser->enc; 05912 05913 if (func == -1) return tSTRING_END; 05914 c = nextc(); 05915 if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) { 05916 do {c = nextc();} while (ISSPACE(c)); 05917 space = 1; 05918 } 05919 if (c == term && !quote->nd_nest) { 05920 if (func & STR_FUNC_QWORDS) { 05921 quote->nd_func = -1; 05922 return ' '; 05923 } 05924 if (!(func & STR_FUNC_REGEXP)) return tSTRING_END; 05925 set_yylval_num(regx_options()); 05926 return tREGEXP_END; 05927 } 05928 if (space) { 05929 pushback(c); 05930 return ' '; 05931 } 05932 newtok(); 05933 if ((func & STR_FUNC_EXPAND) && c == '#') { 05934 switch (c = nextc()) { 05935 case '$': 05936 case '@': 05937 pushback(c); 05938 return tSTRING_DVAR; 05939 case '{': 05940 return tSTRING_DBEG; 05941 } 05942 tokadd('#'); 05943 } 05944 pushback(c); 05945 if (tokadd_string(func, term, paren, "e->nd_nest, 05946 &enc) == -1) { 05947 ruby_sourceline = nd_line(quote); 05948 if (func & STR_FUNC_REGEXP) { 05949 if (parser->eofp) 05950 compile_error(PARSER_ARG "unterminated regexp meets end of file"); 05951 return tREGEXP_END; 05952 } 05953 else { 05954 if (parser->eofp) 05955 compile_error(PARSER_ARG "unterminated string meets end of file"); 05956 return tSTRING_END; 05957 } 05958 } 05959 05960 tokfix(); 05961 set_yylval_str(STR_NEW3(tok(), toklen(), enc, func)); 05962 return tSTRING_CONTENT; 05963 } 05964 05965 static int 05966 parser_heredoc_identifier(struct parser_params *parser) 05967 { 05968 int c = nextc(), term, func = 0; 05969 long len; 05970 05971 if (c == '-') { 05972 c = nextc(); 05973 func = STR_FUNC_INDENT; 05974 } 05975 switch (c) { 05976 case '\'': 05977 func |= str_squote; goto quoted; 05978 case '"': 05979 func |= str_dquote; goto quoted; 05980 case '`': 05981 func |= str_xquote; 05982 quoted: 05983 newtok(); 05984 tokadd(func); 05985 term = c; 05986 while ((c = nextc()) != -1 && c != term) { 05987 if (tokadd_mbchar(c) == -1) return 0; 05988 } 05989 if (c == -1) { 05990 compile_error(PARSER_ARG "unterminated here document identifier"); 05991 return 0; 05992 } 05993 break; 05994 05995 default: 05996 if (!parser_is_identchar()) { 05997 pushback(c); 05998 if (func & STR_FUNC_INDENT) { 05999 pushback('-'); 06000 } 06001 return 0; 06002 } 06003 newtok(); 06004 term = '"'; 06005 tokadd(func |= str_dquote); 06006 do { 06007 if (tokadd_mbchar(c) == -1) return 0; 06008 } while ((c = nextc()) != -1 && parser_is_identchar()); 06009 pushback(c); 06010 break; 06011 } 06012 06013 tokfix(); 06014 #ifdef RIPPER 06015 ripper_dispatch_scan_event(parser, tHEREDOC_BEG); 06016 #endif 06017 len = lex_p - lex_pbeg; 06018 lex_goto_eol(parser); 06019 lex_strterm = rb_node_newnode(NODE_HEREDOC, 06020 STR_NEW(tok(), toklen()), /* nd_lit */ 06021 len, /* nd_nth */ 06022 lex_lastline); /* nd_orig */ 06023 nd_set_line(lex_strterm, ruby_sourceline); 06024 ripper_flush(parser); 06025 return term == '`' ? tXSTRING_BEG : tSTRING_BEG; 06026 } 06027 06028 static void 06029 parser_heredoc_restore(struct parser_params *parser, NODE *here) 06030 { 06031 VALUE line; 06032 06033 line = here->nd_orig; 06034 lex_lastline = line; 06035 lex_pbeg = RSTRING_PTR(line); 06036 lex_pend = lex_pbeg + RSTRING_LEN(line); 06037 lex_p = lex_pbeg + here->nd_nth; 06038 heredoc_end = ruby_sourceline; 06039 ruby_sourceline = nd_line(here); 06040 dispose_string(here->nd_lit); 06041 rb_gc_force_recycle((VALUE)here); 06042 ripper_flush(parser); 06043 } 06044 06045 static int 06046 parser_whole_match_p(struct parser_params *parser, 06047 const char *eos, long len, int indent) 06048 { 06049 const char *p = lex_pbeg; 06050 long n; 06051 06052 if (indent) { 06053 while (*p && ISSPACE(*p)) p++; 06054 } 06055 n = lex_pend - (p + len); 06056 if (n < 0 || (n > 0 && p[len] != '\n' && p[len] != '\r')) return FALSE; 06057 return strncmp(eos, p, len) == 0; 06058 } 06059 06060 static int 06061 parser_here_document(struct parser_params *parser, NODE *here) 06062 { 06063 int c, func, indent = 0; 06064 const char *eos, *p, *pend; 06065 long len; 06066 VALUE str = 0; 06067 rb_encoding *enc = parser->enc; 06068 06069 eos = RSTRING_PTR(here->nd_lit); 06070 len = RSTRING_LEN(here->nd_lit) - 1; 06071 indent = (func = *eos++) & STR_FUNC_INDENT; 06072 06073 if ((c = nextc()) == -1) { 06074 error: 06075 compile_error(PARSER_ARG "can't find string \"%s\" anywhere before EOF", eos); 06076 #ifdef RIPPER 06077 if (NIL_P(parser->delayed)) { 06078 ripper_dispatch_scan_event(parser, tSTRING_CONTENT); 06079 } 06080 else { 06081 if (str || 06082 ((len = lex_p - parser->tokp) > 0 && 06083 (str = STR_NEW3(parser->tokp, len, enc, func), 1))) { 06084 rb_str_append(parser->delayed, str); 06085 } 06086 ripper_dispatch_delayed_token(parser, tSTRING_CONTENT); 06087 } 06088 lex_goto_eol(parser); 06089 #endif 06090 restore: 06091 heredoc_restore(lex_strterm); 06092 lex_strterm = 0; 06093 return 0; 06094 } 06095 if (was_bol() && whole_match_p(eos, len, indent)) { 06096 heredoc_restore(lex_strterm); 06097 return tSTRING_END; 06098 } 06099 06100 if (!(func & STR_FUNC_EXPAND)) { 06101 do { 06102 p = RSTRING_PTR(lex_lastline); 06103 pend = lex_pend; 06104 if (pend > p) { 06105 switch (pend[-1]) { 06106 case '\n': 06107 if (--pend == p || pend[-1] != '\r') { 06108 pend++; 06109 break; 06110 } 06111 case '\r': 06112 --pend; 06113 } 06114 } 06115 if (str) 06116 rb_str_cat(str, p, pend - p); 06117 else 06118 str = STR_NEW(p, pend - p); 06119 if (pend < lex_pend) rb_str_cat(str, "\n", 1); 06120 lex_goto_eol(parser); 06121 if (nextc() == -1) { 06122 if (str) dispose_string(str); 06123 goto error; 06124 } 06125 } while (!whole_match_p(eos, len, indent)); 06126 } 06127 else { 06128 /* int mb = ENC_CODERANGE_7BIT, *mbp = &mb;*/ 06129 newtok(); 06130 if (c == '#') { 06131 switch (c = nextc()) { 06132 case '$': 06133 case '@': 06134 pushback(c); 06135 return tSTRING_DVAR; 06136 case '{': 06137 return tSTRING_DBEG; 06138 } 06139 tokadd('#'); 06140 } 06141 do { 06142 pushback(c); 06143 if ((c = tokadd_string(func, '\n', 0, NULL, &enc)) == -1) { 06144 if (parser->eofp) goto error; 06145 goto restore; 06146 } 06147 if (c != '\n') { 06148 set_yylval_str(STR_NEW3(tok(), toklen(), enc, func)); 06149 return tSTRING_CONTENT; 06150 } 06151 tokadd(nextc()); 06152 /* if (mbp && mb == ENC_CODERANGE_UNKNOWN) mbp = 0;*/ 06153 if ((c = nextc()) == -1) goto error; 06154 } while (!whole_match_p(eos, len, indent)); 06155 str = STR_NEW3(tok(), toklen(), enc, func); 06156 } 06157 #ifdef RIPPER 06158 if (!NIL_P(parser->delayed)) 06159 ripper_dispatch_delayed_token(parser, tSTRING_CONTENT); 06160 lex_goto_eol(parser); 06161 ripper_dispatch_ignored_scan_event(parser, tHEREDOC_END); 06162 #endif 06163 heredoc_restore(lex_strterm); 06164 lex_strterm = NEW_STRTERM(-1, 0, 0); 06165 set_yylval_str(str); 06166 return tSTRING_CONTENT; 06167 } 06168 06169 #include "lex.c" 06170 06171 static void 06172 arg_ambiguous_gen(struct parser_params *parser) 06173 { 06174 #ifndef RIPPER 06175 rb_warning0("ambiguous first argument; put parentheses or even spaces"); 06176 #else 06177 dispatch0(arg_ambiguous); 06178 #endif 06179 } 06180 #define arg_ambiguous() (arg_ambiguous_gen(parser), 1) 06181 06182 static ID 06183 formal_argument_gen(struct parser_params *parser, ID lhs) 06184 { 06185 #ifndef RIPPER 06186 if (!is_local_id(lhs)) 06187 yyerror("formal argument must be local variable"); 06188 #endif 06189 shadowing_lvar(lhs); 06190 return lhs; 06191 } 06192 06193 static int 06194 lvar_defined_gen(struct parser_params *parser, ID id) 06195 { 06196 return (dyna_in_block() && dvar_defined(id)) || local_id(id); 06197 } 06198 06199 /* emacsen -*- hack */ 06200 static long 06201 parser_encode_length(struct parser_params *parser, const char *name, long len) 06202 { 06203 long nlen; 06204 06205 if (len > 5 && name[nlen = len - 5] == '-') { 06206 if (rb_memcicmp(name + nlen + 1, "unix", 4) == 0) 06207 return nlen; 06208 } 06209 if (len > 4 && name[nlen = len - 5] == '-') { 06210 if (rb_memcicmp(name + nlen + 1, "dos", 3) == 0) 06211 return nlen; 06212 if (rb_memcicmp(name + nlen + 1, "mac", 3) == 0) 06213 return nlen; 06214 } 06215 return len; 06216 } 06217 06218 static void 06219 parser_set_encode(struct parser_params *parser, const char *name) 06220 { 06221 int idx = rb_enc_find_index(name); 06222 rb_encoding *enc; 06223 VALUE excargs[3]; 06224 06225 if (idx < 0) { 06226 VALUE rb_make_backtrace(void); 06227 VALUE rb_make_exception(int, VALUE*); 06228 06229 excargs[1] = rb_sprintf("unknown encoding name: %s", name); 06230 error: 06231 excargs[0] = rb_eArgError; 06232 excargs[2] = rb_make_backtrace(); 06233 rb_ary_unshift(excargs[2], rb_sprintf("%s:%d", ruby_sourcefile, ruby_sourceline)); 06234 rb_exc_raise(rb_make_exception(3, excargs)); 06235 } 06236 enc = rb_enc_from_index(idx); 06237 if (!rb_enc_asciicompat(enc)) { 06238 excargs[1] = rb_sprintf("%s is not ASCII compatible", rb_enc_name(enc)); 06239 goto error; 06240 } 06241 parser->enc = enc; 06242 } 06243 06244 static int 06245 comment_at_top(struct parser_params *parser) 06246 { 06247 const char *p = lex_pbeg, *pend = lex_p - 1; 06248 if (parser->line_count != (parser->has_shebang ? 2 : 1)) return 0; 06249 while (p < pend) { 06250 if (!ISSPACE(*p)) return 0; 06251 p++; 06252 } 06253 return 1; 06254 } 06255 06256 #ifndef RIPPER 06257 typedef long (*rb_magic_comment_length_t)(struct parser_params *parser, const char *name, long len); 06258 typedef void (*rb_magic_comment_setter_t)(struct parser_params *parser, const char *name, const char *val); 06259 06260 static void 06261 magic_comment_encoding(struct parser_params *parser, const char *name, const char *val) 06262 { 06263 if (!comment_at_top(parser)) { 06264 return; 06265 } 06266 parser_set_encode(parser, val); 06267 } 06268 06269 struct magic_comment { 06270 const char *name; 06271 rb_magic_comment_setter_t func; 06272 rb_magic_comment_length_t length; 06273 }; 06274 06275 static const struct magic_comment magic_comments[] = { 06276 {"coding", magic_comment_encoding, parser_encode_length}, 06277 {"encoding", magic_comment_encoding, parser_encode_length}, 06278 }; 06279 #endif 06280 06281 static const char * 06282 magic_comment_marker(const char *str, long len) 06283 { 06284 long i = 2; 06285 06286 while (i < len) { 06287 switch (str[i]) { 06288 case '-': 06289 if (str[i-1] == '*' && str[i-2] == '-') { 06290 return str + i + 1; 06291 } 06292 i += 2; 06293 break; 06294 case '*': 06295 if (i + 1 >= len) return 0; 06296 if (str[i+1] != '-') { 06297 i += 4; 06298 } 06299 else if (str[i-1] != '-') { 06300 i += 2; 06301 } 06302 else { 06303 return str + i + 2; 06304 } 06305 break; 06306 default: 06307 i += 3; 06308 break; 06309 } 06310 } 06311 return 0; 06312 } 06313 06314 static int 06315 parser_magic_comment(struct parser_params *parser, const char *str, long len) 06316 { 06317 VALUE name = 0, val = 0; 06318 const char *beg, *end, *vbeg, *vend; 06319 #define str_copy(_s, _p, _n) ((_s) \ 06320 ? (rb_str_resize((_s), (_n)), \ 06321 MEMCPY(RSTRING_PTR(_s), (_p), char, (_n)), (_s)) \ 06322 : ((_s) = STR_NEW((_p), (_n)))) 06323 06324 if (len <= 7) return FALSE; 06325 if (!(beg = magic_comment_marker(str, len))) return FALSE; 06326 if (!(end = magic_comment_marker(beg, str + len - beg))) return FALSE; 06327 str = beg; 06328 len = end - beg - 3; 06329 06330 /* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */ 06331 while (len > 0) { 06332 #ifndef RIPPER 06333 const struct magic_comment *p = magic_comments; 06334 #endif 06335 char *s; 06336 int i; 06337 long n = 0; 06338 06339 for (; len > 0 && *str; str++, --len) { 06340 switch (*str) { 06341 case '\'': case '"': case ':': case ';': 06342 continue; 06343 } 06344 if (!ISSPACE(*str)) break; 06345 } 06346 for (beg = str; len > 0; str++, --len) { 06347 switch (*str) { 06348 case '\'': case '"': case ':': case ';': 06349 break; 06350 default: 06351 if (ISSPACE(*str)) break; 06352 continue; 06353 } 06354 break; 06355 } 06356 for (end = str; len > 0 && ISSPACE(*str); str++, --len); 06357 if (!len) break; 06358 if (*str != ':') continue; 06359 06360 do str++; while (--len > 0 && ISSPACE(*str)); 06361 if (!len) break; 06362 if (*str == '"') { 06363 for (vbeg = ++str; --len > 0 && *str != '"'; str++) { 06364 if (*str == '\\') { 06365 --len; 06366 ++str; 06367 } 06368 } 06369 vend = str; 06370 if (len) { 06371 --len; 06372 ++str; 06373 } 06374 } 06375 else { 06376 for (vbeg = str; len > 0 && *str != '"' && *str != ';' && !ISSPACE(*str); --len, str++); 06377 vend = str; 06378 } 06379 while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++; 06380 06381 n = end - beg; 06382 str_copy(name, beg, n); 06383 s = RSTRING_PTR(name); 06384 for (i = 0; i < n; ++i) { 06385 if (s[i] == '-') s[i] = '_'; 06386 } 06387 #ifndef RIPPER 06388 do { 06389 if (STRNCASECMP(p->name, s, n) == 0) { 06390 n = vend - vbeg; 06391 if (p->length) { 06392 n = (*p->length)(parser, vbeg, n); 06393 } 06394 str_copy(val, vbeg, n); 06395 (*p->func)(parser, s, RSTRING_PTR(val)); 06396 break; 06397 } 06398 } while (++p < magic_comments + numberof(magic_comments)); 06399 #else 06400 dispatch2(magic_comment, name, val); 06401 #endif 06402 } 06403 06404 return TRUE; 06405 } 06406 06407 static void 06408 set_file_encoding(struct parser_params *parser, const char *str, const char *send) 06409 { 06410 int sep = 0; 06411 const char *beg = str; 06412 VALUE s; 06413 06414 for (;;) { 06415 if (send - str <= 6) return; 06416 switch (str[6]) { 06417 case 'C': case 'c': str += 6; continue; 06418 case 'O': case 'o': str += 5; continue; 06419 case 'D': case 'd': str += 4; continue; 06420 case 'I': case 'i': str += 3; continue; 06421 case 'N': case 'n': str += 2; continue; 06422 case 'G': case 'g': str += 1; continue; 06423 case '=': case ':': 06424 sep = 1; 06425 str += 6; 06426 break; 06427 default: 06428 str += 6; 06429 if (ISSPACE(*str)) break; 06430 continue; 06431 } 06432 if (STRNCASECMP(str-6, "coding", 6) == 0) break; 06433 } 06434 for (;;) { 06435 do { 06436 if (++str >= send) return; 06437 } while (ISSPACE(*str)); 06438 if (sep) break; 06439 if (*str != '=' && *str != ':') return; 06440 sep = 1; 06441 str++; 06442 } 06443 beg = str; 06444 while ((*str == '-' || *str == '_' || ISALNUM(*str)) && ++str < send); 06445 s = rb_str_new(beg, parser_encode_length(parser, beg, str - beg)); 06446 parser_set_encode(parser, RSTRING_PTR(s)); 06447 rb_str_resize(s, 0); 06448 } 06449 06450 static void 06451 parser_prepare(struct parser_params *parser) 06452 { 06453 int c = nextc(); 06454 switch (c) { 06455 case '#': 06456 if (peek('!')) parser->has_shebang = 1; 06457 break; 06458 case 0xef: /* UTF-8 BOM marker */ 06459 if (lex_pend - lex_p >= 2 && 06460 (unsigned char)lex_p[0] == 0xbb && 06461 (unsigned char)lex_p[1] == 0xbf) { 06462 parser->enc = rb_utf8_encoding(); 06463 lex_p += 2; 06464 lex_pbeg = lex_p; 06465 return; 06466 } 06467 break; 06468 case EOF: 06469 return; 06470 } 06471 pushback(c); 06472 parser->enc = rb_enc_get(lex_lastline); 06473 } 06474 06475 #define IS_ARG() (lex_state == EXPR_ARG || lex_state == EXPR_CMDARG) 06476 #define IS_END() (lex_state == EXPR_END || lex_state == EXPR_ENDARG || lex_state == EXPR_ENDFN) 06477 #define IS_BEG() (lex_state == EXPR_BEG || lex_state == EXPR_MID || lex_state == EXPR_VALUE || lex_state == EXPR_CLASS) 06478 #define IS_SPCARG(c) (IS_ARG() && space_seen && !ISSPACE(c)) 06479 06480 #ifndef RIPPER 06481 #define ambiguous_operator(op, syn) ( \ 06482 rb_warning0("`"op"' after local variable is interpreted as binary operator"), \ 06483 rb_warning0("even though it seems like "syn"")) 06484 #else 06485 #define ambiguous_operator(op, syn) dispatch2(operator_ambiguous, ripper_intern(op), rb_str_new_cstr(syn)) 06486 #endif 06487 #define warn_balanced(op, syn) \ 06488 (last_state != EXPR_CLASS && last_state != EXPR_DOT && \ 06489 last_state != EXPR_FNAME && last_state != EXPR_ENDFN && \ 06490 last_state != EXPR_ENDARG && \ 06491 space_seen && !ISSPACE(c) && \ 06492 (ambiguous_operator(op, syn), 0)) 06493 06494 static int 06495 parser_yylex(struct parser_params *parser) 06496 { 06497 register int c; 06498 int space_seen = 0; 06499 int cmd_state; 06500 enum lex_state_e last_state; 06501 rb_encoding *enc; 06502 int mb; 06503 #ifdef RIPPER 06504 int fallthru = FALSE; 06505 #endif 06506 06507 if (lex_strterm) { 06508 int token; 06509 if (nd_type(lex_strterm) == NODE_HEREDOC) { 06510 token = here_document(lex_strterm); 06511 if (token == tSTRING_END) { 06512 lex_strterm = 0; 06513 lex_state = EXPR_END; 06514 } 06515 } 06516 else { 06517 token = parse_string(lex_strterm); 06518 if (token == tSTRING_END || token == tREGEXP_END) { 06519 rb_gc_force_recycle((VALUE)lex_strterm); 06520 lex_strterm = 0; 06521 lex_state = EXPR_END; 06522 } 06523 } 06524 return token; 06525 } 06526 cmd_state = command_start; 06527 command_start = FALSE; 06528 retry: 06529 last_state = lex_state; 06530 switch (c = nextc()) { 06531 case '\0': /* NUL */ 06532 case '\004': /* ^D */ 06533 case '\032': /* ^Z */ 06534 case -1: /* end of script. */ 06535 return 0; 06536 06537 /* white spaces */ 06538 case ' ': case '\t': case '\f': case '\r': 06539 case '\13': /* '\v' */ 06540 space_seen = 1; 06541 #ifdef RIPPER 06542 while ((c = nextc())) { 06543 switch (c) { 06544 case ' ': case '\t': case '\f': case '\r': 06545 case '\13': /* '\v' */ 06546 break; 06547 default: 06548 goto outofloop; 06549 } 06550 } 06551 outofloop: 06552 pushback(c); 06553 ripper_dispatch_scan_event(parser, tSP); 06554 #endif 06555 goto retry; 06556 06557 case '#': /* it's a comment */ 06558 /* no magic_comment in shebang line */ 06559 if (!parser_magic_comment(parser, lex_p, lex_pend - lex_p)) { 06560 if (comment_at_top(parser)) { 06561 set_file_encoding(parser, lex_p, lex_pend); 06562 } 06563 } 06564 lex_p = lex_pend; 06565 #ifdef RIPPER 06566 ripper_dispatch_scan_event(parser, tCOMMENT); 06567 fallthru = TRUE; 06568 #endif 06569 /* fall through */ 06570 case '\n': 06571 switch (lex_state) { 06572 case EXPR_BEG: 06573 case EXPR_FNAME: 06574 case EXPR_DOT: 06575 case EXPR_CLASS: 06576 case EXPR_VALUE: 06577 #ifdef RIPPER 06578 if (!fallthru) { 06579 ripper_dispatch_scan_event(parser, tIGNORED_NL); 06580 } 06581 fallthru = FALSE; 06582 #endif 06583 goto retry; 06584 default: 06585 break; 06586 } 06587 while ((c = nextc())) { 06588 switch (c) { 06589 case ' ': case '\t': case '\f': case '\r': 06590 case '\13': /* '\v' */ 06591 space_seen = 1; 06592 break; 06593 case '.': { 06594 if ((c = nextc()) != '.') { 06595 pushback(c); 06596 pushback('.'); 06597 goto retry; 06598 } 06599 } 06600 default: 06601 --ruby_sourceline; 06602 lex_nextline = lex_lastline; 06603 case -1: /* EOF no decrement*/ 06604 lex_goto_eol(parser); 06605 #ifdef RIPPER 06606 if (c != -1) { 06607 parser->tokp = lex_p; 06608 } 06609 #endif 06610 goto normal_newline; 06611 } 06612 } 06613 normal_newline: 06614 command_start = TRUE; 06615 lex_state = EXPR_BEG; 06616 return '\n'; 06617 06618 case '*': 06619 if ((c = nextc()) == '*') { 06620 if ((c = nextc()) == '=') { 06621 set_yylval_id(tPOW); 06622 lex_state = EXPR_BEG; 06623 return tOP_ASGN; 06624 } 06625 pushback(c); 06626 c = tPOW; 06627 } 06628 else { 06629 if (c == '=') { 06630 set_yylval_id('*'); 06631 lex_state = EXPR_BEG; 06632 return tOP_ASGN; 06633 } 06634 pushback(c); 06635 if (IS_SPCARG(c)) { 06636 rb_warning0("`*' interpreted as argument prefix"); 06637 c = tSTAR; 06638 } 06639 else if (IS_BEG()) { 06640 c = tSTAR; 06641 } 06642 else { 06643 warn_balanced("*", "argument prefix"); 06644 c = '*'; 06645 } 06646 } 06647 switch (lex_state) { 06648 case EXPR_FNAME: case EXPR_DOT: 06649 lex_state = EXPR_ARG; break; 06650 default: 06651 lex_state = EXPR_BEG; break; 06652 } 06653 return c; 06654 06655 case '!': 06656 c = nextc(); 06657 if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) { 06658 lex_state = EXPR_ARG; 06659 if (c == '@') { 06660 return '!'; 06661 } 06662 } 06663 else { 06664 lex_state = EXPR_BEG; 06665 } 06666 if (c == '=') { 06667 return tNEQ; 06668 } 06669 if (c == '~') { 06670 return tNMATCH; 06671 } 06672 pushback(c); 06673 return '!'; 06674 06675 case '=': 06676 if (was_bol()) { 06677 /* skip embedded rd document */ 06678 if (strncmp(lex_p, "begin", 5) == 0 && ISSPACE(lex_p[5])) { 06679 #ifdef RIPPER 06680 int first_p = TRUE; 06681 06682 lex_goto_eol(parser); 06683 ripper_dispatch_scan_event(parser, tEMBDOC_BEG); 06684 #endif 06685 for (;;) { 06686 lex_goto_eol(parser); 06687 #ifdef RIPPER 06688 if (!first_p) { 06689 ripper_dispatch_scan_event(parser, tEMBDOC); 06690 } 06691 first_p = FALSE; 06692 #endif 06693 c = nextc(); 06694 if (c == -1) { 06695 compile_error(PARSER_ARG "embedded document meets end of file"); 06696 return 0; 06697 } 06698 if (c != '=') continue; 06699 if (strncmp(lex_p, "end", 3) == 0 && 06700 (lex_p + 3 == lex_pend || ISSPACE(lex_p[3]))) { 06701 break; 06702 } 06703 } 06704 lex_goto_eol(parser); 06705 #ifdef RIPPER 06706 ripper_dispatch_scan_event(parser, tEMBDOC_END); 06707 #endif 06708 goto retry; 06709 } 06710 } 06711 06712 switch (lex_state) { 06713 case EXPR_FNAME: case EXPR_DOT: 06714 lex_state = EXPR_ARG; break; 06715 default: 06716 lex_state = EXPR_BEG; break; 06717 } 06718 if ((c = nextc()) == '=') { 06719 if ((c = nextc()) == '=') { 06720 return tEQQ; 06721 } 06722 pushback(c); 06723 return tEQ; 06724 } 06725 if (c == '~') { 06726 return tMATCH; 06727 } 06728 else if (c == '>') { 06729 return tASSOC; 06730 } 06731 pushback(c); 06732 return '='; 06733 06734 case '<': 06735 last_state = lex_state; 06736 c = nextc(); 06737 if (c == '<' && 06738 lex_state != EXPR_DOT && 06739 lex_state != EXPR_CLASS && 06740 !IS_END() && 06741 (!IS_ARG() || space_seen)) { 06742 int token = heredoc_identifier(); 06743 if (token) return token; 06744 } 06745 switch (lex_state) { 06746 case EXPR_FNAME: case EXPR_DOT: 06747 lex_state = EXPR_ARG; break; 06748 default: 06749 lex_state = EXPR_BEG; break; 06750 } 06751 if (c == '=') { 06752 if ((c = nextc()) == '>') { 06753 return tCMP; 06754 } 06755 pushback(c); 06756 return tLEQ; 06757 } 06758 if (c == '<') { 06759 if ((c = nextc()) == '=') { 06760 set_yylval_id(tLSHFT); 06761 lex_state = EXPR_BEG; 06762 return tOP_ASGN; 06763 } 06764 pushback(c); 06765 warn_balanced("<<", "here document"); 06766 return tLSHFT; 06767 } 06768 pushback(c); 06769 return '<'; 06770 06771 case '>': 06772 switch (lex_state) { 06773 case EXPR_FNAME: case EXPR_DOT: 06774 lex_state = EXPR_ARG; break; 06775 default: 06776 lex_state = EXPR_BEG; break; 06777 } 06778 if ((c = nextc()) == '=') { 06779 return tGEQ; 06780 } 06781 if (c == '>') { 06782 if ((c = nextc()) == '=') { 06783 set_yylval_id(tRSHFT); 06784 lex_state = EXPR_BEG; 06785 return tOP_ASGN; 06786 } 06787 pushback(c); 06788 return tRSHFT; 06789 } 06790 pushback(c); 06791 return '>'; 06792 06793 case '"': 06794 lex_strterm = NEW_STRTERM(str_dquote, '"', 0); 06795 return tSTRING_BEG; 06796 06797 case '`': 06798 if (lex_state == EXPR_FNAME) { 06799 lex_state = EXPR_ENDFN; 06800 return c; 06801 } 06802 if (lex_state == EXPR_DOT) { 06803 if (cmd_state) 06804 lex_state = EXPR_CMDARG; 06805 else 06806 lex_state = EXPR_ARG; 06807 return c; 06808 } 06809 lex_strterm = NEW_STRTERM(str_xquote, '`', 0); 06810 return tXSTRING_BEG; 06811 06812 case '\'': 06813 lex_strterm = NEW_STRTERM(str_squote, '\'', 0); 06814 return tSTRING_BEG; 06815 06816 case '?': 06817 if (IS_END()) { 06818 lex_state = EXPR_VALUE; 06819 return '?'; 06820 } 06821 c = nextc(); 06822 if (c == -1) { 06823 compile_error(PARSER_ARG "incomplete character syntax"); 06824 return 0; 06825 } 06826 if (rb_enc_isspace(c, parser->enc)) { 06827 if (!IS_ARG()) { 06828 int c2 = 0; 06829 switch (c) { 06830 case ' ': 06831 c2 = 's'; 06832 break; 06833 case '\n': 06834 c2 = 'n'; 06835 break; 06836 case '\t': 06837 c2 = 't'; 06838 break; 06839 case '\v': 06840 c2 = 'v'; 06841 break; 06842 case '\r': 06843 c2 = 'r'; 06844 break; 06845 case '\f': 06846 c2 = 'f'; 06847 break; 06848 } 06849 if (c2) { 06850 rb_warnI("invalid character syntax; use ?\\%c", c2); 06851 } 06852 } 06853 ternary: 06854 pushback(c); 06855 lex_state = EXPR_VALUE; 06856 return '?'; 06857 } 06858 newtok(); 06859 enc = parser->enc; 06860 if (!parser_isascii()) { 06861 if (tokadd_mbchar(c) == -1) return 0; 06862 } 06863 else if ((rb_enc_isalnum(c, parser->enc) || c == '_') && 06864 lex_p < lex_pend && is_identchar(lex_p, lex_pend, parser->enc)) { 06865 goto ternary; 06866 } 06867 else if (c == '\\') { 06868 if (peek('u')) { 06869 nextc(); 06870 c = parser_tokadd_utf8(parser, &enc, 0, 0, 0); 06871 if (0x80 <= c) { 06872 tokaddmbc(c, enc); 06873 } 06874 else { 06875 tokadd(c); 06876 } 06877 } 06878 else { 06879 c = read_escape(0, &enc); 06880 tokadd(c); 06881 } 06882 } 06883 else { 06884 tokadd(c); 06885 } 06886 tokfix(); 06887 set_yylval_str(STR_NEW3(tok(), toklen(), enc, 0)); 06888 lex_state = EXPR_END; 06889 return tCHAR; 06890 06891 case '&': 06892 if ((c = nextc()) == '&') { 06893 lex_state = EXPR_BEG; 06894 if ((c = nextc()) == '=') { 06895 set_yylval_id(tANDOP); 06896 lex_state = EXPR_BEG; 06897 return tOP_ASGN; 06898 } 06899 pushback(c); 06900 return tANDOP; 06901 } 06902 else if (c == '=') { 06903 set_yylval_id('&'); 06904 lex_state = EXPR_BEG; 06905 return tOP_ASGN; 06906 } 06907 pushback(c); 06908 if (IS_SPCARG(c)) { 06909 rb_warning0("`&' interpreted as argument prefix"); 06910 c = tAMPER; 06911 } 06912 else if (IS_BEG()) { 06913 c = tAMPER; 06914 } 06915 else { 06916 warn_balanced("&", "argument prefix"); 06917 c = '&'; 06918 } 06919 switch (lex_state) { 06920 case EXPR_FNAME: case EXPR_DOT: 06921 lex_state = EXPR_ARG; break; 06922 default: 06923 lex_state = EXPR_BEG; 06924 } 06925 return c; 06926 06927 case '|': 06928 if ((c = nextc()) == '|') { 06929 lex_state = EXPR_BEG; 06930 if ((c = nextc()) == '=') { 06931 set_yylval_id(tOROP); 06932 lex_state = EXPR_BEG; 06933 return tOP_ASGN; 06934 } 06935 pushback(c); 06936 return tOROP; 06937 } 06938 if (c == '=') { 06939 set_yylval_id('|'); 06940 lex_state = EXPR_BEG; 06941 return tOP_ASGN; 06942 } 06943 if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) { 06944 lex_state = EXPR_ARG; 06945 } 06946 else { 06947 lex_state = EXPR_BEG; 06948 } 06949 pushback(c); 06950 return '|'; 06951 06952 case '+': 06953 c = nextc(); 06954 if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) { 06955 lex_state = EXPR_ARG; 06956 if (c == '@') { 06957 return tUPLUS; 06958 } 06959 pushback(c); 06960 return '+'; 06961 } 06962 if (c == '=') { 06963 set_yylval_id('+'); 06964 lex_state = EXPR_BEG; 06965 return tOP_ASGN; 06966 } 06967 if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous())) { 06968 lex_state = EXPR_BEG; 06969 pushback(c); 06970 if (c != -1 && ISDIGIT(c)) { 06971 c = '+'; 06972 goto start_num; 06973 } 06974 return tUPLUS; 06975 } 06976 lex_state = EXPR_BEG; 06977 pushback(c); 06978 warn_balanced("+", "unary operator"); 06979 return '+'; 06980 06981 case '-': 06982 c = nextc(); 06983 if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) { 06984 lex_state = EXPR_ARG; 06985 if (c == '@') { 06986 return tUMINUS; 06987 } 06988 pushback(c); 06989 return '-'; 06990 } 06991 if (c == '=') { 06992 set_yylval_id('-'); 06993 lex_state = EXPR_BEG; 06994 return tOP_ASGN; 06995 } 06996 if (c == '>') { 06997 lex_state = EXPR_ARG; 06998 return tLAMBDA; 06999 } 07000 if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous())) { 07001 lex_state = EXPR_BEG; 07002 pushback(c); 07003 if (c != -1 && ISDIGIT(c)) { 07004 return tUMINUS_NUM; 07005 } 07006 return tUMINUS; 07007 } 07008 lex_state = EXPR_BEG; 07009 pushback(c); 07010 warn_balanced("-", "unary operator"); 07011 return '-'; 07012 07013 case '.': 07014 lex_state = EXPR_BEG; 07015 if ((c = nextc()) == '.') { 07016 if ((c = nextc()) == '.') { 07017 return tDOT3; 07018 } 07019 pushback(c); 07020 return tDOT2; 07021 } 07022 pushback(c); 07023 if (c != -1 && ISDIGIT(c)) { 07024 yyerror("no .<digit> floating literal anymore; put 0 before dot"); 07025 } 07026 lex_state = EXPR_DOT; 07027 return '.'; 07028 07029 start_num: 07030 case '0': case '1': case '2': case '3': case '4': 07031 case '5': case '6': case '7': case '8': case '9': 07032 { 07033 int is_float, seen_point, seen_e, nondigit; 07034 07035 is_float = seen_point = seen_e = nondigit = 0; 07036 lex_state = EXPR_END; 07037 newtok(); 07038 if (c == '-' || c == '+') { 07039 tokadd(c); 07040 c = nextc(); 07041 } 07042 if (c == '0') { 07043 #define no_digits() do {yyerror("numeric literal without digits"); return 0;} while (0) 07044 int start = toklen(); 07045 c = nextc(); 07046 if (c == 'x' || c == 'X') { 07047 /* hexadecimal */ 07048 c = nextc(); 07049 if (c != -1 && ISXDIGIT(c)) { 07050 do { 07051 if (c == '_') { 07052 if (nondigit) break; 07053 nondigit = c; 07054 continue; 07055 } 07056 if (!ISXDIGIT(c)) break; 07057 nondigit = 0; 07058 tokadd(c); 07059 } while ((c = nextc()) != -1); 07060 } 07061 pushback(c); 07062 tokfix(); 07063 if (toklen() == start) { 07064 no_digits(); 07065 } 07066 else if (nondigit) goto trailing_uc; 07067 set_yylval_literal(rb_cstr_to_inum(tok(), 16, FALSE)); 07068 return tINTEGER; 07069 } 07070 if (c == 'b' || c == 'B') { 07071 /* binary */ 07072 c = nextc(); 07073 if (c == '0' || c == '1') { 07074 do { 07075 if (c == '_') { 07076 if (nondigit) break; 07077 nondigit = c; 07078 continue; 07079 } 07080 if (c != '0' && c != '1') break; 07081 nondigit = 0; 07082 tokadd(c); 07083 } while ((c = nextc()) != -1); 07084 } 07085 pushback(c); 07086 tokfix(); 07087 if (toklen() == start) { 07088 no_digits(); 07089 } 07090 else if (nondigit) goto trailing_uc; 07091 set_yylval_literal(rb_cstr_to_inum(tok(), 2, FALSE)); 07092 return tINTEGER; 07093 } 07094 if (c == 'd' || c == 'D') { 07095 /* decimal */ 07096 c = nextc(); 07097 if (c != -1 && ISDIGIT(c)) { 07098 do { 07099 if (c == '_') { 07100 if (nondigit) break; 07101 nondigit = c; 07102 continue; 07103 } 07104 if (!ISDIGIT(c)) break; 07105 nondigit = 0; 07106 tokadd(c); 07107 } while ((c = nextc()) != -1); 07108 } 07109 pushback(c); 07110 tokfix(); 07111 if (toklen() == start) { 07112 no_digits(); 07113 } 07114 else if (nondigit) goto trailing_uc; 07115 set_yylval_literal(rb_cstr_to_inum(tok(), 10, FALSE)); 07116 return tINTEGER; 07117 } 07118 if (c == '_') { 07119 /* 0_0 */ 07120 goto octal_number; 07121 } 07122 if (c == 'o' || c == 'O') { 07123 /* prefixed octal */ 07124 c = nextc(); 07125 if (c == -1 || c == '_' || !ISDIGIT(c)) { 07126 no_digits(); 07127 } 07128 } 07129 if (c >= '0' && c <= '7') { 07130 /* octal */ 07131 octal_number: 07132 do { 07133 if (c == '_') { 07134 if (nondigit) break; 07135 nondigit = c; 07136 continue; 07137 } 07138 if (c < '0' || c > '9') break; 07139 if (c > '7') goto invalid_octal; 07140 nondigit = 0; 07141 tokadd(c); 07142 } while ((c = nextc()) != -1); 07143 if (toklen() > start) { 07144 pushback(c); 07145 tokfix(); 07146 if (nondigit) goto trailing_uc; 07147 set_yylval_literal(rb_cstr_to_inum(tok(), 8, FALSE)); 07148 return tINTEGER; 07149 } 07150 if (nondigit) { 07151 pushback(c); 07152 goto trailing_uc; 07153 } 07154 } 07155 if (c > '7' && c <= '9') { 07156 invalid_octal: 07157 yyerror("Invalid octal digit"); 07158 } 07159 else if (c == '.' || c == 'e' || c == 'E') { 07160 tokadd('0'); 07161 } 07162 else { 07163 pushback(c); 07164 set_yylval_literal(INT2FIX(0)); 07165 return tINTEGER; 07166 } 07167 } 07168 07169 for (;;) { 07170 switch (c) { 07171 case '0': case '1': case '2': case '3': case '4': 07172 case '5': case '6': case '7': case '8': case '9': 07173 nondigit = 0; 07174 tokadd(c); 07175 break; 07176 07177 case '.': 07178 if (nondigit) goto trailing_uc; 07179 if (seen_point || seen_e) { 07180 goto decode_num; 07181 } 07182 else { 07183 int c0 = nextc(); 07184 if (c0 == -1 || !ISDIGIT(c0)) { 07185 pushback(c0); 07186 goto decode_num; 07187 } 07188 c = c0; 07189 } 07190 tokadd('.'); 07191 tokadd(c); 07192 is_float++; 07193 seen_point++; 07194 nondigit = 0; 07195 break; 07196 07197 case 'e': 07198 case 'E': 07199 if (nondigit) { 07200 pushback(c); 07201 c = nondigit; 07202 goto decode_num; 07203 } 07204 if (seen_e) { 07205 goto decode_num; 07206 } 07207 tokadd(c); 07208 seen_e++; 07209 is_float++; 07210 nondigit = c; 07211 c = nextc(); 07212 if (c != '-' && c != '+') continue; 07213 tokadd(c); 07214 nondigit = c; 07215 break; 07216 07217 case '_': /* `_' in number just ignored */ 07218 if (nondigit) goto decode_num; 07219 nondigit = c; 07220 break; 07221 07222 default: 07223 goto decode_num; 07224 } 07225 c = nextc(); 07226 } 07227 07228 decode_num: 07229 pushback(c); 07230 if (nondigit) { 07231 char tmp[30]; 07232 trailing_uc: 07233 snprintf(tmp, sizeof(tmp), "trailing `%c' in number", nondigit); 07234 yyerror(tmp); 07235 } 07236 tokfix(); 07237 if (is_float) { 07238 double d = strtod(tok(), 0); 07239 if (errno == ERANGE) { 07240 rb_warningS("Float %s out of range", tok()); 07241 errno = 0; 07242 } 07243 set_yylval_literal(DBL2NUM(d)); 07244 return tFLOAT; 07245 } 07246 set_yylval_literal(rb_cstr_to_inum(tok(), 10, FALSE)); 07247 return tINTEGER; 07248 } 07249 07250 case ')': 07251 case ']': 07252 paren_nest--; 07253 case '}': 07254 COND_LEXPOP(); 07255 CMDARG_LEXPOP(); 07256 if (c == ')') 07257 lex_state = EXPR_ENDFN; 07258 else 07259 lex_state = EXPR_ENDARG; 07260 return c; 07261 07262 case ':': 07263 c = nextc(); 07264 if (c == ':') { 07265 if (IS_BEG() || lex_state == EXPR_CLASS || IS_SPCARG(-1)) { 07266 lex_state = EXPR_BEG; 07267 return tCOLON3; 07268 } 07269 lex_state = EXPR_DOT; 07270 return tCOLON2; 07271 } 07272 if (IS_END() || ISSPACE(c)) { 07273 pushback(c); 07274 warn_balanced(":", "symbol literal"); 07275 lex_state = EXPR_BEG; 07276 return ':'; 07277 } 07278 switch (c) { 07279 case '\'': 07280 lex_strterm = NEW_STRTERM(str_ssym, c, 0); 07281 break; 07282 case '"': 07283 lex_strterm = NEW_STRTERM(str_dsym, c, 0); 07284 break; 07285 default: 07286 pushback(c); 07287 break; 07288 } 07289 lex_state = EXPR_FNAME; 07290 return tSYMBEG; 07291 07292 case '/': 07293 if (IS_BEG()) { 07294 lex_strterm = NEW_STRTERM(str_regexp, '/', 0); 07295 return tREGEXP_BEG; 07296 } 07297 if ((c = nextc()) == '=') { 07298 set_yylval_id('/'); 07299 lex_state = EXPR_BEG; 07300 return tOP_ASGN; 07301 } 07302 pushback(c); 07303 if (IS_SPCARG(c)) { 07304 arg_ambiguous(); 07305 lex_strterm = NEW_STRTERM(str_regexp, '/', 0); 07306 return tREGEXP_BEG; 07307 } 07308 switch (lex_state) { 07309 case EXPR_FNAME: case EXPR_DOT: 07310 lex_state = EXPR_ARG; break; 07311 default: 07312 lex_state = EXPR_BEG; break; 07313 } 07314 warn_balanced("/", "regexp literal"); 07315 return '/'; 07316 07317 case '^': 07318 if ((c = nextc()) == '=') { 07319 set_yylval_id('^'); 07320 lex_state = EXPR_BEG; 07321 return tOP_ASGN; 07322 } 07323 switch (lex_state) { 07324 case EXPR_FNAME: case EXPR_DOT: 07325 lex_state = EXPR_ARG; break; 07326 default: 07327 lex_state = EXPR_BEG; break; 07328 } 07329 pushback(c); 07330 return '^'; 07331 07332 case ';': 07333 lex_state = EXPR_BEG; 07334 command_start = TRUE; 07335 return ';'; 07336 07337 case ',': 07338 lex_state = EXPR_BEG; 07339 return ','; 07340 07341 case '~': 07342 if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) { 07343 if ((c = nextc()) != '@') { 07344 pushback(c); 07345 } 07346 lex_state = EXPR_ARG; 07347 } 07348 else { 07349 lex_state = EXPR_BEG; 07350 } 07351 return '~'; 07352 07353 case '(': 07354 if (IS_BEG()) { 07355 c = tLPAREN; 07356 } 07357 else if (IS_SPCARG(-1)) { 07358 c = tLPAREN_ARG; 07359 } 07360 paren_nest++; 07361 COND_PUSH(0); 07362 CMDARG_PUSH(0); 07363 lex_state = EXPR_BEG; 07364 return c; 07365 07366 case '[': 07367 paren_nest++; 07368 if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) { 07369 lex_state = EXPR_ARG; 07370 if ((c = nextc()) == ']') { 07371 if ((c = nextc()) == '=') { 07372 return tASET; 07373 } 07374 pushback(c); 07375 return tAREF; 07376 } 07377 pushback(c); 07378 return '['; 07379 } 07380 else if (IS_BEG()) { 07381 c = tLBRACK; 07382 } 07383 else if (IS_ARG() && space_seen) { 07384 c = tLBRACK; 07385 } 07386 lex_state = EXPR_BEG; 07387 COND_PUSH(0); 07388 CMDARG_PUSH(0); 07389 return c; 07390 07391 case '{': 07392 if (lpar_beg && lpar_beg == paren_nest) { 07393 lex_state = EXPR_BEG; 07394 lpar_beg = 0; 07395 --paren_nest; 07396 COND_PUSH(0); 07397 CMDARG_PUSH(0); 07398 return tLAMBEG; 07399 } 07400 if (IS_ARG() || lex_state == EXPR_END || lex_state == EXPR_ENDFN) 07401 c = '{'; /* block (primary) */ 07402 else if (lex_state == EXPR_ENDARG) 07403 c = tLBRACE_ARG; /* block (expr) */ 07404 else 07405 c = tLBRACE; /* hash */ 07406 COND_PUSH(0); 07407 CMDARG_PUSH(0); 07408 lex_state = EXPR_BEG; 07409 if (c != tLBRACE) command_start = TRUE; 07410 return c; 07411 07412 case '\\': 07413 c = nextc(); 07414 if (c == '\n') { 07415 space_seen = 1; 07416 #ifdef RIPPER 07417 ripper_dispatch_scan_event(parser, tSP); 07418 #endif 07419 goto retry; /* skip \\n */ 07420 } 07421 pushback(c); 07422 return '\\'; 07423 07424 case '%': 07425 if (IS_BEG()) { 07426 int term; 07427 int paren; 07428 07429 c = nextc(); 07430 quotation: 07431 if (c == -1 || !ISALNUM(c)) { 07432 term = c; 07433 c = 'Q'; 07434 } 07435 else { 07436 term = nextc(); 07437 if (rb_enc_isalnum(term, parser->enc) || !parser_isascii()) { 07438 yyerror("unknown type of %string"); 07439 return 0; 07440 } 07441 } 07442 if (c == -1 || term == -1) { 07443 compile_error(PARSER_ARG "unterminated quoted string meets end of file"); 07444 return 0; 07445 } 07446 paren = term; 07447 if (term == '(') term = ')'; 07448 else if (term == '[') term = ']'; 07449 else if (term == '{') term = '}'; 07450 else if (term == '<') term = '>'; 07451 else paren = 0; 07452 07453 switch (c) { 07454 case 'Q': 07455 lex_strterm = NEW_STRTERM(str_dquote, term, paren); 07456 return tSTRING_BEG; 07457 07458 case 'q': 07459 lex_strterm = NEW_STRTERM(str_squote, term, paren); 07460 return tSTRING_BEG; 07461 07462 case 'W': 07463 lex_strterm = NEW_STRTERM(str_dword, term, paren); 07464 do {c = nextc();} while (ISSPACE(c)); 07465 pushback(c); 07466 return tWORDS_BEG; 07467 07468 case 'w': 07469 lex_strterm = NEW_STRTERM(str_sword, term, paren); 07470 do {c = nextc();} while (ISSPACE(c)); 07471 pushback(c); 07472 return tQWORDS_BEG; 07473 07474 case 'x': 07475 lex_strterm = NEW_STRTERM(str_xquote, term, paren); 07476 return tXSTRING_BEG; 07477 07478 case 'r': 07479 lex_strterm = NEW_STRTERM(str_regexp, term, paren); 07480 return tREGEXP_BEG; 07481 07482 case 's': 07483 lex_strterm = NEW_STRTERM(str_ssym, term, paren); 07484 lex_state = EXPR_FNAME; 07485 return tSYMBEG; 07486 07487 default: 07488 yyerror("unknown type of %string"); 07489 return 0; 07490 } 07491 } 07492 if ((c = nextc()) == '=') { 07493 set_yylval_id('%'); 07494 lex_state = EXPR_BEG; 07495 return tOP_ASGN; 07496 } 07497 if (IS_SPCARG(c)) { 07498 goto quotation; 07499 } 07500 switch (lex_state) { 07501 case EXPR_FNAME: case EXPR_DOT: 07502 lex_state = EXPR_ARG; break; 07503 default: 07504 lex_state = EXPR_BEG; break; 07505 } 07506 pushback(c); 07507 warn_balanced("%%", "string literal"); 07508 return '%'; 07509 07510 case '$': 07511 lex_state = EXPR_END; 07512 newtok(); 07513 c = nextc(); 07514 switch (c) { 07515 case '_': /* $_: last read line string */ 07516 c = nextc(); 07517 if (parser_is_identchar()) { 07518 tokadd('$'); 07519 tokadd('_'); 07520 break; 07521 } 07522 pushback(c); 07523 c = '_'; 07524 /* fall through */ 07525 case '~': /* $~: match-data */ 07526 case '*': /* $*: argv */ 07527 case '$': /* $$: pid */ 07528 case '?': /* $?: last status */ 07529 case '!': /* $!: error string */ 07530 case '@': /* $@: error position */ 07531 case '/': /* $/: input record separator */ 07532 case '\\': /* $\: output record separator */ 07533 case ';': /* $;: field separator */ 07534 case ',': /* $,: output field separator */ 07535 case '.': /* $.: last read line number */ 07536 case '=': /* $=: ignorecase */ 07537 case ':': /* $:: load path */ 07538 case '<': /* $<: reading filename */ 07539 case '>': /* $>: default output handle */ 07540 case '\"': /* $": already loaded files */ 07541 tokadd('$'); 07542 tokadd(c); 07543 tokfix(); 07544 set_yylval_name(rb_intern(tok())); 07545 return tGVAR; 07546 07547 case '-': 07548 tokadd('$'); 07549 tokadd(c); 07550 c = nextc(); 07551 if (parser_is_identchar()) { 07552 if (tokadd_mbchar(c) == -1) return 0; 07553 } 07554 else { 07555 pushback(c); 07556 } 07557 gvar: 07558 tokfix(); 07559 set_yylval_name(rb_intern(tok())); 07560 return tGVAR; 07561 07562 case '&': /* $&: last match */ 07563 case '`': /* $`: string before last match */ 07564 case '\'': /* $': string after last match */ 07565 case '+': /* $+: string matches last paren. */ 07566 if (last_state == EXPR_FNAME) { 07567 tokadd('$'); 07568 tokadd(c); 07569 goto gvar; 07570 } 07571 set_yylval_node(NEW_BACK_REF(c)); 07572 return tBACK_REF; 07573 07574 case '1': case '2': case '3': 07575 case '4': case '5': case '6': 07576 case '7': case '8': case '9': 07577 tokadd('$'); 07578 do { 07579 tokadd(c); 07580 c = nextc(); 07581 } while (c != -1 && ISDIGIT(c)); 07582 pushback(c); 07583 if (last_state == EXPR_FNAME) goto gvar; 07584 tokfix(); 07585 set_yylval_node(NEW_NTH_REF(atoi(tok()+1))); 07586 return tNTH_REF; 07587 07588 default: 07589 if (!parser_is_identchar()) { 07590 pushback(c); 07591 return '$'; 07592 } 07593 case '0': 07594 tokadd('$'); 07595 } 07596 break; 07597 07598 case '@': 07599 c = nextc(); 07600 newtok(); 07601 tokadd('@'); 07602 if (c == '@') { 07603 tokadd('@'); 07604 c = nextc(); 07605 } 07606 if (c != -1 && ISDIGIT(c)) { 07607 if (tokidx == 1) { 07608 compile_error(PARSER_ARG "`@%c' is not allowed as an instance variable name", c); 07609 } 07610 else { 07611 compile_error(PARSER_ARG "`@@%c' is not allowed as a class variable name", c); 07612 } 07613 return 0; 07614 } 07615 if (!parser_is_identchar()) { 07616 pushback(c); 07617 return '@'; 07618 } 07619 break; 07620 07621 case '_': 07622 if (was_bol() && whole_match_p("__END__", 7, 0)) { 07623 ruby__end__seen = 1; 07624 parser->eofp = Qtrue; 07625 #ifndef RIPPER 07626 return -1; 07627 #else 07628 lex_goto_eol(parser); 07629 ripper_dispatch_scan_event(parser, k__END__); 07630 return 0; 07631 #endif 07632 } 07633 newtok(); 07634 break; 07635 07636 default: 07637 if (!parser_is_identchar()) { 07638 rb_compile_error(PARSER_ARG "Invalid char `\\x%02X' in expression", c); 07639 goto retry; 07640 } 07641 07642 newtok(); 07643 break; 07644 } 07645 07646 mb = ENC_CODERANGE_7BIT; 07647 do { 07648 if (!ISASCII(c)) mb = ENC_CODERANGE_UNKNOWN; 07649 if (tokadd_mbchar(c) == -1) return 0; 07650 c = nextc(); 07651 } while (parser_is_identchar()); 07652 switch (tok()[0]) { 07653 case '@': case '$': 07654 pushback(c); 07655 break; 07656 default: 07657 if ((c == '!' || c == '?') && !peek('=')) { 07658 tokadd(c); 07659 } 07660 else { 07661 pushback(c); 07662 } 07663 } 07664 tokfix(); 07665 07666 { 07667 int result = 0; 07668 07669 last_state = lex_state; 07670 switch (tok()[0]) { 07671 case '$': 07672 lex_state = EXPR_END; 07673 result = tGVAR; 07674 break; 07675 case '@': 07676 lex_state = EXPR_END; 07677 if (tok()[1] == '@') 07678 result = tCVAR; 07679 else 07680 result = tIVAR; 07681 break; 07682 07683 default: 07684 if (toklast() == '!' || toklast() == '?') { 07685 result = tFID; 07686 } 07687 else { 07688 if (lex_state == EXPR_FNAME) { 07689 if ((c = nextc()) == '=' && !peek('~') && !peek('>') && 07690 (!peek('=') || (lex_p + 1 < lex_pend && lex_p[1] == '>'))) { 07691 result = tIDENTIFIER; 07692 tokadd(c); 07693 tokfix(); 07694 } 07695 else { 07696 pushback(c); 07697 } 07698 } 07699 if (result == 0 && ISUPPER(tok()[0])) { 07700 result = tCONSTANT; 07701 } 07702 else { 07703 result = tIDENTIFIER; 07704 } 07705 } 07706 07707 if ((lex_state == EXPR_BEG && !cmd_state) || 07708 IS_ARG()) { 07709 if (peek(':') && !(lex_p + 1 < lex_pend && lex_p[1] == ':')) { 07710 lex_state = EXPR_BEG; 07711 nextc(); 07712 set_yylval_name(TOK_INTERN(!ENC_SINGLE(mb))); 07713 return tLABEL; 07714 } 07715 } 07716 if (mb == ENC_CODERANGE_7BIT && lex_state != EXPR_DOT) { 07717 const struct kwtable *kw; 07718 07719 /* See if it is a reserved word. */ 07720 kw = rb_reserved_word(tok(), toklen()); 07721 if (kw) { 07722 enum lex_state_e state = lex_state; 07723 lex_state = kw->state; 07724 if (state == EXPR_FNAME) { 07725 set_yylval_name(rb_intern(kw->name)); 07726 return kw->id[0]; 07727 } 07728 if (kw->id[0] == keyword_do) { 07729 command_start = TRUE; 07730 if (lpar_beg && lpar_beg == paren_nest) { 07731 lpar_beg = 0; 07732 --paren_nest; 07733 return keyword_do_LAMBDA; 07734 } 07735 if (COND_P()) return keyword_do_cond; 07736 if (CMDARG_P() && state != EXPR_CMDARG) 07737 return keyword_do_block; 07738 if (state == EXPR_ENDARG || state == EXPR_BEG) 07739 return keyword_do_block; 07740 return keyword_do; 07741 } 07742 if (state == EXPR_BEG || state == EXPR_VALUE) 07743 return kw->id[0]; 07744 else { 07745 if (kw->id[0] != kw->id[1]) 07746 lex_state = EXPR_BEG; 07747 return kw->id[1]; 07748 } 07749 } 07750 } 07751 07752 if (IS_BEG() || 07753 lex_state == EXPR_DOT || 07754 IS_ARG()) { 07755 if (cmd_state) { 07756 lex_state = EXPR_CMDARG; 07757 } 07758 else { 07759 lex_state = EXPR_ARG; 07760 } 07761 } 07762 else if (lex_state == EXPR_FNAME) { 07763 lex_state = EXPR_ENDFN; 07764 } 07765 else { 07766 lex_state = EXPR_END; 07767 } 07768 } 07769 { 07770 ID ident = TOK_INTERN(!ENC_SINGLE(mb)); 07771 07772 set_yylval_name(ident); 07773 if (last_state != EXPR_DOT && is_local_id(ident) && lvar_defined(ident)) { 07774 lex_state = EXPR_END; 07775 } 07776 } 07777 return result; 07778 } 07779 } 07780 07781 #if YYPURE 07782 static int 07783 yylex(void *lval, void *p) 07784 #else 07785 yylex(void *p) 07786 #endif 07787 { 07788 struct parser_params *parser = (struct parser_params*)p; 07789 int t; 07790 07791 #if YYPURE 07792 parser->parser_yylval = lval; 07793 parser->parser_yylval->val = Qundef; 07794 #endif 07795 t = parser_yylex(parser); 07796 #ifdef RIPPER 07797 if (!NIL_P(parser->delayed)) { 07798 ripper_dispatch_delayed_token(parser, t); 07799 } 07800 if (t != 0) 07801 ripper_dispatch_scan_event(parser, t); 07802 #endif 07803 07804 return t; 07805 } 07806 07807 #ifndef RIPPER 07808 static NODE* 07809 node_newnode(struct parser_params *parser, enum node_type type, VALUE a0, VALUE a1, VALUE a2) 07810 { 07811 NODE *n = (rb_node_newnode)(type, a0, a1, a2); 07812 nd_set_line(n, ruby_sourceline); 07813 return n; 07814 } 07815 07816 enum node_type 07817 nodetype(NODE *node) /* for debug */ 07818 { 07819 return (enum node_type)nd_type(node); 07820 } 07821 07822 int 07823 nodeline(NODE *node) 07824 { 07825 return nd_line(node); 07826 } 07827 07828 static NODE* 07829 newline_node(NODE *node) 07830 { 07831 if (node) { 07832 node = remove_begin(node); 07833 node->flags |= NODE_FL_NEWLINE; 07834 } 07835 return node; 07836 } 07837 07838 static void 07839 fixpos(NODE *node, NODE *orig) 07840 { 07841 if (!node) return; 07842 if (!orig) return; 07843 if (orig == (NODE*)1) return; 07844 nd_set_line(node, nd_line(orig)); 07845 } 07846 07847 static void 07848 parser_warning(struct parser_params *parser, NODE *node, const char *mesg) 07849 { 07850 rb_compile_warning(ruby_sourcefile, nd_line(node), "%s", mesg); 07851 } 07852 #define parser_warning(node, mesg) parser_warning(parser, node, mesg) 07853 07854 static void 07855 parser_warn(struct parser_params *parser, NODE *node, const char *mesg) 07856 { 07857 rb_compile_warn(ruby_sourcefile, nd_line(node), "%s", mesg); 07858 } 07859 #define parser_warn(node, mesg) parser_warn(parser, node, mesg) 07860 07861 static NODE* 07862 block_append_gen(struct parser_params *parser, NODE *head, NODE *tail) 07863 { 07864 NODE *end, *h = head, *nd; 07865 07866 if (tail == 0) return head; 07867 07868 if (h == 0) return tail; 07869 switch (nd_type(h)) { 07870 case NODE_LIT: 07871 case NODE_STR: 07872 case NODE_SELF: 07873 case NODE_TRUE: 07874 case NODE_FALSE: 07875 case NODE_NIL: 07876 parser_warning(h, "unused literal ignored"); 07877 return tail; 07878 default: 07879 h = end = NEW_BLOCK(head); 07880 end->nd_end = end; 07881 fixpos(end, head); 07882 head = end; 07883 break; 07884 case NODE_BLOCK: 07885 end = h->nd_end; 07886 break; 07887 } 07888 07889 nd = end->nd_head; 07890 switch (nd_type(nd)) { 07891 case NODE_RETURN: 07892 case NODE_BREAK: 07893 case NODE_NEXT: 07894 case NODE_REDO: 07895 case NODE_RETRY: 07896 if (RTEST(ruby_verbose)) { 07897 parser_warning(nd, "statement not reached"); 07898 } 07899 break; 07900 07901 default: 07902 break; 07903 } 07904 07905 if (nd_type(tail) != NODE_BLOCK) { 07906 tail = NEW_BLOCK(tail); 07907 tail->nd_end = tail; 07908 } 07909 end->nd_next = tail; 07910 h->nd_end = tail->nd_end; 07911 return head; 07912 } 07913 07914 /* append item to the list */ 07915 static NODE* 07916 list_append_gen(struct parser_params *parser, NODE *list, NODE *item) 07917 { 07918 NODE *last; 07919 07920 if (list == 0) return NEW_LIST(item); 07921 if (list->nd_next) { 07922 last = list->nd_next->nd_end; 07923 } 07924 else { 07925 last = list; 07926 } 07927 07928 list->nd_alen += 1; 07929 last->nd_next = NEW_LIST(item); 07930 list->nd_next->nd_end = last->nd_next; 07931 return list; 07932 } 07933 07934 /* concat two lists */ 07935 static NODE* 07936 list_concat_gen(struct parser_params *parser, NODE *head, NODE *tail) 07937 { 07938 NODE *last; 07939 07940 if (head->nd_next) { 07941 last = head->nd_next->nd_end; 07942 } 07943 else { 07944 last = head; 07945 } 07946 07947 head->nd_alen += tail->nd_alen; 07948 last->nd_next = tail; 07949 if (tail->nd_next) { 07950 head->nd_next->nd_end = tail->nd_next->nd_end; 07951 } 07952 else { 07953 head->nd_next->nd_end = tail; 07954 } 07955 07956 return head; 07957 } 07958 07959 static int 07960 literal_concat0(struct parser_params *parser, VALUE head, VALUE tail) 07961 { 07962 if (NIL_P(tail)) return 1; 07963 if (!rb_enc_compatible(head, tail)) { 07964 compile_error(PARSER_ARG "string literal encodings differ (%s / %s)", 07965 rb_enc_name(rb_enc_get(head)), 07966 rb_enc_name(rb_enc_get(tail))); 07967 rb_str_resize(head, 0); 07968 rb_str_resize(tail, 0); 07969 return 0; 07970 } 07971 rb_str_buf_append(head, tail); 07972 return 1; 07973 } 07974 07975 /* concat two string literals */ 07976 static NODE * 07977 literal_concat_gen(struct parser_params *parser, NODE *head, NODE *tail) 07978 { 07979 enum node_type htype; 07980 07981 if (!head) return tail; 07982 if (!tail) return head; 07983 07984 htype = nd_type(head); 07985 if (htype == NODE_EVSTR) { 07986 NODE *node = NEW_DSTR(Qnil); 07987 head = list_append(node, head); 07988 } 07989 switch (nd_type(tail)) { 07990 case NODE_STR: 07991 if (htype == NODE_STR) { 07992 if (!literal_concat0(parser, head->nd_lit, tail->nd_lit)) { 07993 error: 07994 rb_gc_force_recycle((VALUE)head); 07995 rb_gc_force_recycle((VALUE)tail); 07996 return 0; 07997 } 07998 rb_gc_force_recycle((VALUE)tail); 07999 } 08000 else { 08001 list_append(head, tail); 08002 } 08003 break; 08004 08005 case NODE_DSTR: 08006 if (htype == NODE_STR) { 08007 if (!literal_concat0(parser, head->nd_lit, tail->nd_lit)) 08008 goto error; 08009 tail->nd_lit = head->nd_lit; 08010 rb_gc_force_recycle((VALUE)head); 08011 head = tail; 08012 } 08013 else if (NIL_P(tail->nd_lit)) { 08014 head->nd_alen += tail->nd_alen - 1; 08015 head->nd_next->nd_end->nd_next = tail->nd_next; 08016 head->nd_next->nd_end = tail->nd_next->nd_end; 08017 rb_gc_force_recycle((VALUE)tail); 08018 } 08019 else { 08020 nd_set_type(tail, NODE_ARRAY); 08021 tail->nd_head = NEW_STR(tail->nd_lit); 08022 list_concat(head, tail); 08023 } 08024 break; 08025 08026 case NODE_EVSTR: 08027 if (htype == NODE_STR) { 08028 nd_set_type(head, NODE_DSTR); 08029 head->nd_alen = 1; 08030 } 08031 list_append(head, tail); 08032 break; 08033 } 08034 return head; 08035 } 08036 08037 static NODE * 08038 evstr2dstr_gen(struct parser_params *parser, NODE *node) 08039 { 08040 if (nd_type(node) == NODE_EVSTR) { 08041 node = list_append(NEW_DSTR(Qnil), node); 08042 } 08043 return node; 08044 } 08045 08046 static NODE * 08047 new_evstr_gen(struct parser_params *parser, NODE *node) 08048 { 08049 NODE *head = node; 08050 08051 if (node) { 08052 switch (nd_type(node)) { 08053 case NODE_STR: case NODE_DSTR: case NODE_EVSTR: 08054 return node; 08055 } 08056 } 08057 return NEW_EVSTR(head); 08058 } 08059 08060 static NODE * 08061 call_bin_op_gen(struct parser_params *parser, NODE *recv, ID id, NODE *arg1) 08062 { 08063 value_expr(recv); 08064 value_expr(arg1); 08065 return NEW_CALL(recv, id, NEW_LIST(arg1)); 08066 } 08067 08068 static NODE * 08069 call_uni_op_gen(struct parser_params *parser, NODE *recv, ID id) 08070 { 08071 value_expr(recv); 08072 return NEW_CALL(recv, id, 0); 08073 } 08074 08075 static NODE* 08076 match_op_gen(struct parser_params *parser, NODE *node1, NODE *node2) 08077 { 08078 value_expr(node1); 08079 value_expr(node2); 08080 if (node1) { 08081 switch (nd_type(node1)) { 08082 case NODE_DREGX: 08083 case NODE_DREGX_ONCE: 08084 return NEW_MATCH2(node1, node2); 08085 08086 case NODE_LIT: 08087 if (TYPE(node1->nd_lit) == T_REGEXP) { 08088 return NEW_MATCH2(node1, node2); 08089 } 08090 } 08091 } 08092 08093 if (node2) { 08094 switch (nd_type(node2)) { 08095 case NODE_DREGX: 08096 case NODE_DREGX_ONCE: 08097 return NEW_MATCH3(node2, node1); 08098 08099 case NODE_LIT: 08100 if (TYPE(node2->nd_lit) == T_REGEXP) { 08101 return NEW_MATCH3(node2, node1); 08102 } 08103 } 08104 } 08105 08106 return NEW_CALL(node1, tMATCH, NEW_LIST(node2)); 08107 } 08108 08109 static NODE* 08110 gettable_gen(struct parser_params *parser, ID id) 08111 { 08112 if (id == keyword_self) { 08113 return NEW_SELF(); 08114 } 08115 else if (id == keyword_nil) { 08116 return NEW_NIL(); 08117 } 08118 else if (id == keyword_true) { 08119 return NEW_TRUE(); 08120 } 08121 else if (id == keyword_false) { 08122 return NEW_FALSE(); 08123 } 08124 else if (id == keyword__FILE__) { 08125 return NEW_STR(rb_external_str_new_with_enc(ruby_sourcefile, strlen(ruby_sourcefile), 08126 rb_filesystem_encoding())); 08127 } 08128 else if (id == keyword__LINE__) { 08129 return NEW_LIT(INT2FIX(ruby_sourceline)); 08130 } 08131 else if (id == keyword__ENCODING__) { 08132 return NEW_LIT(rb_enc_from_encoding(parser->enc)); 08133 } 08134 else if (is_local_id(id)) { 08135 if (dyna_in_block() && dvar_defined(id)) return NEW_DVAR(id); 08136 if (local_id(id)) return NEW_LVAR(id); 08137 /* method call without arguments */ 08138 return NEW_VCALL(id); 08139 } 08140 else if (is_global_id(id)) { 08141 return NEW_GVAR(id); 08142 } 08143 else if (is_instance_id(id)) { 08144 return NEW_IVAR(id); 08145 } 08146 else if (is_const_id(id)) { 08147 return NEW_CONST(id); 08148 } 08149 else if (is_class_id(id)) { 08150 return NEW_CVAR(id); 08151 } 08152 compile_error(PARSER_ARG "identifier %s is not valid to get", rb_id2name(id)); 08153 return 0; 08154 } 08155 #endif /* !RIPPER */ 08156 08157 #ifdef RIPPER 08158 static VALUE 08159 assignable_gen(struct parser_params *parser, VALUE lhs) 08160 #else 08161 static NODE* 08162 assignable_gen(struct parser_params *parser, ID id, NODE *val) 08163 #endif 08164 { 08165 #ifdef RIPPER 08166 ID id = get_id(lhs); 08167 # define assignable_result(x) get_value(lhs) 08168 # define parser_yyerror(parser, x) dispatch1(assign_error, lhs) 08169 #else 08170 # define assignable_result(x) x 08171 #endif 08172 if (!id) return assignable_result(0); 08173 if (id == keyword_self) { 08174 yyerror("Can't change the value of self"); 08175 } 08176 else if (id == keyword_nil) { 08177 yyerror("Can't assign to nil"); 08178 } 08179 else if (id == keyword_true) { 08180 yyerror("Can't assign to true"); 08181 } 08182 else if (id == keyword_false) { 08183 yyerror("Can't assign to false"); 08184 } 08185 else if (id == keyword__FILE__) { 08186 yyerror("Can't assign to __FILE__"); 08187 } 08188 else if (id == keyword__LINE__) { 08189 yyerror("Can't assign to __LINE__"); 08190 } 08191 else if (id == keyword__ENCODING__) { 08192 yyerror("Can't assign to __ENCODING__"); 08193 } 08194 else if (is_local_id(id)) { 08195 if (dyna_in_block()) { 08196 if (dvar_curr(id)) { 08197 return assignable_result(NEW_DASGN_CURR(id, val)); 08198 } 08199 else if (dvar_defined(id)) { 08200 return assignable_result(NEW_DASGN(id, val)); 08201 } 08202 else if (local_id(id)) { 08203 return assignable_result(NEW_LASGN(id, val)); 08204 } 08205 else { 08206 dyna_var(id); 08207 return assignable_result(NEW_DASGN_CURR(id, val)); 08208 } 08209 } 08210 else { 08211 if (!local_id(id)) { 08212 local_var(id); 08213 } 08214 return assignable_result(NEW_LASGN(id, val)); 08215 } 08216 } 08217 else if (is_global_id(id)) { 08218 return assignable_result(NEW_GASGN(id, val)); 08219 } 08220 else if (is_instance_id(id)) { 08221 return assignable_result(NEW_IASGN(id, val)); 08222 } 08223 else if (is_const_id(id)) { 08224 if (!in_def && !in_single) 08225 return assignable_result(NEW_CDECL(id, val, 0)); 08226 yyerror("dynamic constant assignment"); 08227 } 08228 else if (is_class_id(id)) { 08229 return assignable_result(NEW_CVASGN(id, val)); 08230 } 08231 else { 08232 compile_error(PARSER_ARG "identifier %s is not valid to set", rb_id2name(id)); 08233 } 08234 return assignable_result(0); 08235 #undef assignable_result 08236 #undef parser_yyerror 08237 } 08238 08239 static ID 08240 shadowing_lvar_gen(struct parser_params *parser, ID name) 08241 { 08242 ID uscore; 08243 08244 CONST_ID(uscore, "_"); 08245 if (uscore == name) return name; 08246 if (dyna_in_block()) { 08247 if (dvar_curr(name)) { 08248 yyerror("duplicated argument name"); 08249 } 08250 else if (dvar_defined(name) || local_id(name)) { 08251 rb_warningS("shadowing outer local variable - %s", rb_id2name(name)); 08252 vtable_add(lvtbl->vars, name); 08253 } 08254 } 08255 else { 08256 if (local_id(name)) { 08257 yyerror("duplicated argument name"); 08258 } 08259 } 08260 return name; 08261 } 08262 08263 static void 08264 new_bv_gen(struct parser_params *parser, ID name) 08265 { 08266 if (!name) return; 08267 if (!is_local_id(name)) { 08268 compile_error(PARSER_ARG "invalid local variable - %s", 08269 rb_id2name(name)); 08270 return; 08271 } 08272 shadowing_lvar(name); 08273 dyna_var(name); 08274 } 08275 08276 #ifndef RIPPER 08277 static NODE * 08278 aryset_gen(struct parser_params *parser, NODE *recv, NODE *idx) 08279 { 08280 if (recv && nd_type(recv) == NODE_SELF) 08281 recv = (NODE *)1; 08282 return NEW_ATTRASGN(recv, tASET, idx); 08283 } 08284 08285 static void 08286 block_dup_check_gen(struct parser_params *parser, NODE *node1, NODE *node2) 08287 { 08288 if (node2 && node1 && nd_type(node1) == NODE_BLOCK_PASS) { 08289 compile_error(PARSER_ARG "both block arg and actual block given"); 08290 } 08291 } 08292 08293 ID 08294 rb_id_attrset(ID id) 08295 { 08296 id &= ~ID_SCOPE_MASK; 08297 id |= ID_ATTRSET; 08298 return id; 08299 } 08300 08301 static NODE * 08302 attrset_gen(struct parser_params *parser, NODE *recv, ID id) 08303 { 08304 if (recv && nd_type(recv) == NODE_SELF) 08305 recv = (NODE *)1; 08306 return NEW_ATTRASGN(recv, rb_id_attrset(id), 0); 08307 } 08308 08309 static void 08310 rb_backref_error_gen(struct parser_params *parser, NODE *node) 08311 { 08312 switch (nd_type(node)) { 08313 case NODE_NTH_REF: 08314 compile_error(PARSER_ARG "Can't set variable $%ld", node->nd_nth); 08315 break; 08316 case NODE_BACK_REF: 08317 compile_error(PARSER_ARG "Can't set variable $%c", (int)node->nd_nth); 08318 break; 08319 } 08320 } 08321 08322 static NODE * 08323 arg_concat_gen(struct parser_params *parser, NODE *node1, NODE *node2) 08324 { 08325 if (!node2) return node1; 08326 switch (nd_type(node1)) { 08327 case NODE_BLOCK_PASS: 08328 if (node1->nd_head) 08329 node1->nd_head = arg_concat(node1->nd_head, node2); 08330 else 08331 node1->nd_head = NEW_LIST(node2); 08332 return node1; 08333 case NODE_ARGSPUSH: 08334 if (nd_type(node2) != NODE_ARRAY) break; 08335 node1->nd_body = list_concat(NEW_LIST(node1->nd_body), node2); 08336 nd_set_type(node1, NODE_ARGSCAT); 08337 return node1; 08338 case NODE_ARGSCAT: 08339 if (nd_type(node2) != NODE_ARRAY || 08340 nd_type(node1->nd_body) != NODE_ARRAY) break; 08341 node1->nd_body = list_concat(node1->nd_body, node2); 08342 return node1; 08343 } 08344 return NEW_ARGSCAT(node1, node2); 08345 } 08346 08347 static NODE * 08348 arg_append_gen(struct parser_params *parser, NODE *node1, NODE *node2) 08349 { 08350 if (!node1) return NEW_LIST(node2); 08351 switch (nd_type(node1)) { 08352 case NODE_ARRAY: 08353 return list_append(node1, node2); 08354 case NODE_BLOCK_PASS: 08355 node1->nd_head = arg_append(node1->nd_head, node2); 08356 return node1; 08357 case NODE_ARGSPUSH: 08358 node1->nd_body = list_append(NEW_LIST(node1->nd_body), node2); 08359 nd_set_type(node1, NODE_ARGSCAT); 08360 return node1; 08361 } 08362 return NEW_ARGSPUSH(node1, node2); 08363 } 08364 08365 static NODE * 08366 splat_array(NODE* node) 08367 { 08368 if (nd_type(node) == NODE_SPLAT) node = node->nd_head; 08369 if (nd_type(node) == NODE_ARRAY) return node; 08370 return 0; 08371 } 08372 08373 static NODE * 08374 node_assign_gen(struct parser_params *parser, NODE *lhs, NODE *rhs) 08375 { 08376 if (!lhs) return 0; 08377 08378 switch (nd_type(lhs)) { 08379 case NODE_GASGN: 08380 case NODE_IASGN: 08381 case NODE_IASGN2: 08382 case NODE_LASGN: 08383 case NODE_DASGN: 08384 case NODE_DASGN_CURR: 08385 case NODE_MASGN: 08386 case NODE_CDECL: 08387 case NODE_CVASGN: 08388 lhs->nd_value = rhs; 08389 break; 08390 08391 case NODE_ATTRASGN: 08392 case NODE_CALL: 08393 lhs->nd_args = arg_append(lhs->nd_args, rhs); 08394 break; 08395 08396 default: 08397 /* should not happen */ 08398 break; 08399 } 08400 08401 return lhs; 08402 } 08403 08404 static int 08405 value_expr_gen(struct parser_params *parser, NODE *node) 08406 { 08407 int cond = 0; 08408 08409 if (!node) { 08410 rb_warning0("empty expression"); 08411 } 08412 while (node) { 08413 switch (nd_type(node)) { 08414 case NODE_DEFN: 08415 case NODE_DEFS: 08416 parser_warning(node, "void value expression"); 08417 return FALSE; 08418 08419 case NODE_RETURN: 08420 case NODE_BREAK: 08421 case NODE_NEXT: 08422 case NODE_REDO: 08423 case NODE_RETRY: 08424 if (!cond) yyerror("void value expression"); 08425 /* or "control never reach"? */ 08426 return FALSE; 08427 08428 case NODE_BLOCK: 08429 while (node->nd_next) { 08430 node = node->nd_next; 08431 } 08432 node = node->nd_head; 08433 break; 08434 08435 case NODE_BEGIN: 08436 node = node->nd_body; 08437 break; 08438 08439 case NODE_IF: 08440 if (!node->nd_body) { 08441 node = node->nd_else; 08442 break; 08443 } 08444 else if (!node->nd_else) { 08445 node = node->nd_body; 08446 break; 08447 } 08448 if (!value_expr(node->nd_body)) return FALSE; 08449 node = node->nd_else; 08450 break; 08451 08452 case NODE_AND: 08453 case NODE_OR: 08454 cond = 1; 08455 node = node->nd_2nd; 08456 break; 08457 08458 default: 08459 return TRUE; 08460 } 08461 } 08462 08463 return TRUE; 08464 } 08465 08466 static void 08467 void_expr_gen(struct parser_params *parser, NODE *node) 08468 { 08469 const char *useless = 0; 08470 08471 if (!RTEST(ruby_verbose)) return; 08472 08473 if (!node) return; 08474 switch (nd_type(node)) { 08475 case NODE_CALL: 08476 switch (node->nd_mid) { 08477 case '+': 08478 case '-': 08479 case '*': 08480 case '/': 08481 case '%': 08482 case tPOW: 08483 case tUPLUS: 08484 case tUMINUS: 08485 case '|': 08486 case '^': 08487 case '&': 08488 case tCMP: 08489 case '>': 08490 case tGEQ: 08491 case '<': 08492 case tLEQ: 08493 case tEQ: 08494 case tNEQ: 08495 useless = rb_id2name(node->nd_mid); 08496 break; 08497 } 08498 break; 08499 08500 case NODE_LVAR: 08501 case NODE_DVAR: 08502 case NODE_GVAR: 08503 case NODE_IVAR: 08504 case NODE_CVAR: 08505 case NODE_NTH_REF: 08506 case NODE_BACK_REF: 08507 useless = "a variable"; 08508 break; 08509 case NODE_CONST: 08510 useless = "a constant"; 08511 break; 08512 case NODE_LIT: 08513 case NODE_STR: 08514 case NODE_DSTR: 08515 case NODE_DREGX: 08516 case NODE_DREGX_ONCE: 08517 useless = "a literal"; 08518 break; 08519 case NODE_COLON2: 08520 case NODE_COLON3: 08521 useless = "::"; 08522 break; 08523 case NODE_DOT2: 08524 useless = ".."; 08525 break; 08526 case NODE_DOT3: 08527 useless = "..."; 08528 break; 08529 case NODE_SELF: 08530 useless = "self"; 08531 break; 08532 case NODE_NIL: 08533 useless = "nil"; 08534 break; 08535 case NODE_TRUE: 08536 useless = "true"; 08537 break; 08538 case NODE_FALSE: 08539 useless = "false"; 08540 break; 08541 case NODE_DEFINED: 08542 useless = "defined?"; 08543 break; 08544 } 08545 08546 if (useless) { 08547 int line = ruby_sourceline; 08548 08549 ruby_sourceline = nd_line(node); 08550 rb_warnS("useless use of %s in void context", useless); 08551 ruby_sourceline = line; 08552 } 08553 } 08554 08555 static void 08556 void_stmts_gen(struct parser_params *parser, NODE *node) 08557 { 08558 if (!RTEST(ruby_verbose)) return; 08559 if (!node) return; 08560 if (nd_type(node) != NODE_BLOCK) return; 08561 08562 for (;;) { 08563 if (!node->nd_next) return; 08564 void_expr0(node->nd_head); 08565 node = node->nd_next; 08566 } 08567 } 08568 08569 static NODE * 08570 remove_begin(NODE *node) 08571 { 08572 NODE **n = &node, *n1 = node; 08573 while (n1 && nd_type(n1) == NODE_BEGIN && n1->nd_body) { 08574 *n = n1 = n1->nd_body; 08575 } 08576 return node; 08577 } 08578 08579 static void 08580 reduce_nodes_gen(struct parser_params *parser, NODE **body) 08581 { 08582 NODE *node = *body; 08583 08584 if (!node) { 08585 *body = NEW_NIL(); 08586 return; 08587 } 08588 #define subnodes(n1, n2) \ 08589 ((!node->n1) ? (node->n2 ? (body = &node->n2, 1) : 0) : \ 08590 (!node->n2) ? (body = &node->n1, 1) : \ 08591 (reduce_nodes(&node->n1), body = &node->n2, 1)) 08592 08593 while (node) { 08594 int newline = (int)(node->flags & NODE_FL_NEWLINE); 08595 switch (nd_type(node)) { 08596 end: 08597 case NODE_NIL: 08598 *body = 0; 08599 return; 08600 case NODE_RETURN: 08601 *body = node = node->nd_stts; 08602 if (newline && node) node->flags |= NODE_FL_NEWLINE; 08603 continue; 08604 case NODE_BEGIN: 08605 *body = node = node->nd_body; 08606 if (newline && node) node->flags |= NODE_FL_NEWLINE; 08607 continue; 08608 case NODE_BLOCK: 08609 body = &node->nd_end->nd_head; 08610 break; 08611 case NODE_IF: 08612 if (subnodes(nd_body, nd_else)) break; 08613 return; 08614 case NODE_CASE: 08615 body = &node->nd_body; 08616 break; 08617 case NODE_WHEN: 08618 if (!subnodes(nd_body, nd_next)) goto end; 08619 break; 08620 case NODE_ENSURE: 08621 if (!subnodes(nd_head, nd_resq)) goto end; 08622 break; 08623 case NODE_RESCUE: 08624 if (!subnodes(nd_head, nd_resq)) goto end; 08625 break; 08626 default: 08627 return; 08628 } 08629 node = *body; 08630 if (newline && node) node->flags |= NODE_FL_NEWLINE; 08631 } 08632 08633 #undef subnodes 08634 } 08635 08636 static int 08637 assign_in_cond(struct parser_params *parser, NODE *node) 08638 { 08639 switch (nd_type(node)) { 08640 case NODE_MASGN: 08641 yyerror("multiple assignment in conditional"); 08642 return 1; 08643 08644 case NODE_LASGN: 08645 case NODE_DASGN: 08646 case NODE_DASGN_CURR: 08647 case NODE_GASGN: 08648 case NODE_IASGN: 08649 break; 08650 08651 default: 08652 return 0; 08653 } 08654 08655 if (!node->nd_value) return 1; 08656 switch (nd_type(node->nd_value)) { 08657 case NODE_LIT: 08658 case NODE_STR: 08659 case NODE_NIL: 08660 case NODE_TRUE: 08661 case NODE_FALSE: 08662 /* reports always */ 08663 parser_warn(node->nd_value, "found = in conditional, should be =="); 08664 return 1; 08665 08666 case NODE_DSTR: 08667 case NODE_XSTR: 08668 case NODE_DXSTR: 08669 case NODE_EVSTR: 08670 case NODE_DREGX: 08671 default: 08672 break; 08673 } 08674 return 1; 08675 } 08676 08677 static void 08678 warn_unless_e_option(struct parser_params *parser, NODE *node, const char *str) 08679 { 08680 if (!e_option_supplied(parser)) parser_warn(node, str); 08681 } 08682 08683 static void 08684 warning_unless_e_option(struct parser_params *parser, NODE *node, const char *str) 08685 { 08686 if (!e_option_supplied(parser)) parser_warning(node, str); 08687 } 08688 08689 static void 08690 fixup_nodes(NODE **rootnode) 08691 { 08692 NODE *node, *next, *head; 08693 08694 for (node = *rootnode; node; node = next) { 08695 enum node_type type; 08696 VALUE val; 08697 08698 next = node->nd_next; 08699 head = node->nd_head; 08700 rb_gc_force_recycle((VALUE)node); 08701 *rootnode = next; 08702 switch (type = nd_type(head)) { 08703 case NODE_DOT2: 08704 case NODE_DOT3: 08705 val = rb_range_new(head->nd_beg->nd_lit, head->nd_end->nd_lit, 08706 type == NODE_DOT3); 08707 rb_gc_force_recycle((VALUE)head->nd_beg); 08708 rb_gc_force_recycle((VALUE)head->nd_end); 08709 nd_set_type(head, NODE_LIT); 08710 head->nd_lit = val; 08711 break; 08712 default: 08713 break; 08714 } 08715 } 08716 } 08717 08718 static NODE *cond0(struct parser_params*,NODE*); 08719 08720 static NODE* 08721 range_op(struct parser_params *parser, NODE *node) 08722 { 08723 enum node_type type; 08724 08725 if (node == 0) return 0; 08726 08727 type = nd_type(node); 08728 value_expr(node); 08729 if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) { 08730 warn_unless_e_option(parser, node, "integer literal in conditional range"); 08731 return NEW_CALL(node, tEQ, NEW_LIST(NEW_GVAR(rb_intern("$.")))); 08732 } 08733 return cond0(parser, node); 08734 } 08735 08736 static int 08737 literal_node(NODE *node) 08738 { 08739 if (!node) return 1; /* same as NODE_NIL */ 08740 switch (nd_type(node)) { 08741 case NODE_LIT: 08742 case NODE_STR: 08743 case NODE_DSTR: 08744 case NODE_EVSTR: 08745 case NODE_DREGX: 08746 case NODE_DREGX_ONCE: 08747 case NODE_DSYM: 08748 return 2; 08749 case NODE_TRUE: 08750 case NODE_FALSE: 08751 case NODE_NIL: 08752 return 1; 08753 } 08754 return 0; 08755 } 08756 08757 static NODE* 08758 cond0(struct parser_params *parser, NODE *node) 08759 { 08760 if (node == 0) return 0; 08761 assign_in_cond(parser, node); 08762 08763 switch (nd_type(node)) { 08764 case NODE_DSTR: 08765 case NODE_EVSTR: 08766 case NODE_STR: 08767 rb_warn0("string literal in condition"); 08768 break; 08769 08770 case NODE_DREGX: 08771 case NODE_DREGX_ONCE: 08772 warning_unless_e_option(parser, node, "regex literal in condition"); 08773 return NEW_MATCH2(node, NEW_GVAR(rb_intern("$_"))); 08774 08775 case NODE_AND: 08776 case NODE_OR: 08777 node->nd_1st = cond0(parser, node->nd_1st); 08778 node->nd_2nd = cond0(parser, node->nd_2nd); 08779 break; 08780 08781 case NODE_DOT2: 08782 case NODE_DOT3: 08783 node->nd_beg = range_op(parser, node->nd_beg); 08784 node->nd_end = range_op(parser, node->nd_end); 08785 if (nd_type(node) == NODE_DOT2) nd_set_type(node,NODE_FLIP2); 08786 else if (nd_type(node) == NODE_DOT3) nd_set_type(node, NODE_FLIP3); 08787 if (!e_option_supplied(parser)) { 08788 int b = literal_node(node->nd_beg); 08789 int e = literal_node(node->nd_end); 08790 if ((b == 1 && e == 1) || (b + e >= 2 && RTEST(ruby_verbose))) { 08791 parser_warn(node, "range literal in condition"); 08792 } 08793 } 08794 break; 08795 08796 case NODE_DSYM: 08797 parser_warning(node, "literal in condition"); 08798 break; 08799 08800 case NODE_LIT: 08801 if (TYPE(node->nd_lit) == T_REGEXP) { 08802 warn_unless_e_option(parser, node, "regex literal in condition"); 08803 nd_set_type(node, NODE_MATCH); 08804 } 08805 else { 08806 parser_warning(node, "literal in condition"); 08807 } 08808 default: 08809 break; 08810 } 08811 return node; 08812 } 08813 08814 static NODE* 08815 cond_gen(struct parser_params *parser, NODE *node) 08816 { 08817 if (node == 0) return 0; 08818 return cond0(parser, node); 08819 } 08820 08821 static NODE* 08822 logop_gen(struct parser_params *parser, enum node_type type, NODE *left, NODE *right) 08823 { 08824 value_expr(left); 08825 if (left && (enum node_type)nd_type(left) == type) { 08826 NODE *node = left, *second; 08827 while ((second = node->nd_2nd) != 0 && (enum node_type)nd_type(second) == type) { 08828 node = second; 08829 } 08830 node->nd_2nd = NEW_NODE(type, second, right, 0); 08831 return left; 08832 } 08833 return NEW_NODE(type, left, right, 0); 08834 } 08835 08836 static void 08837 no_blockarg(struct parser_params *parser, NODE *node) 08838 { 08839 if (node && nd_type(node) == NODE_BLOCK_PASS) { 08840 compile_error(PARSER_ARG "block argument should not be given"); 08841 } 08842 } 08843 08844 static NODE * 08845 ret_args_gen(struct parser_params *parser, NODE *node) 08846 { 08847 if (node) { 08848 no_blockarg(parser, node); 08849 if (nd_type(node) == NODE_ARRAY) { 08850 if (node->nd_next == 0) { 08851 node = node->nd_head; 08852 } 08853 else { 08854 nd_set_type(node, NODE_VALUES); 08855 } 08856 } 08857 } 08858 return node; 08859 } 08860 08861 static NODE * 08862 new_yield_gen(struct parser_params *parser, NODE *node) 08863 { 08864 long state = Qtrue; 08865 08866 if (node) { 08867 no_blockarg(parser, node); 08868 if (node && nd_type(node) == NODE_SPLAT) { 08869 state = Qtrue; 08870 } 08871 } 08872 else { 08873 state = Qfalse; 08874 } 08875 return NEW_YIELD(node, state); 08876 } 08877 08878 static NODE* 08879 negate_lit(NODE *node) 08880 { 08881 switch (TYPE(node->nd_lit)) { 08882 case T_FIXNUM: 08883 node->nd_lit = LONG2FIX(-FIX2LONG(node->nd_lit)); 08884 break; 08885 case T_BIGNUM: 08886 node->nd_lit = rb_funcall(node->nd_lit,tUMINUS,0,0); 08887 break; 08888 case T_FLOAT: 08889 RFLOAT(node->nd_lit)->float_value = -RFLOAT_VALUE(node->nd_lit); 08890 break; 08891 default: 08892 break; 08893 } 08894 return node; 08895 } 08896 08897 static NODE * 08898 arg_blk_pass(NODE *node1, NODE *node2) 08899 { 08900 if (node2) { 08901 node2->nd_head = node1; 08902 return node2; 08903 } 08904 return node1; 08905 } 08906 08907 static NODE* 08908 new_args_gen(struct parser_params *parser, NODE *m, NODE *o, ID r, NODE *p, ID b) 08909 { 08910 int saved_line = ruby_sourceline; 08911 NODE *node; 08912 NODE *i1, *i2 = 0; 08913 08914 node = NEW_ARGS(m ? m->nd_plen : 0, o); 08915 i1 = m ? m->nd_next : 0; 08916 node->nd_next = NEW_ARGS_AUX(r, b); 08917 08918 if (p) { 08919 i2 = p->nd_next; 08920 node->nd_next->nd_next = NEW_ARGS_AUX(p->nd_pid, p->nd_plen); 08921 } 08922 else if (i1) { 08923 node->nd_next->nd_next = NEW_ARGS_AUX(0, 0); 08924 } 08925 if (i1 || i2) { 08926 node->nd_next->nd_next->nd_next = NEW_NODE(NODE_AND, i1, i2, 0); 08927 } 08928 ruby_sourceline = saved_line; 08929 return node; 08930 } 08931 #endif /* !RIPPER */ 08932 08933 static void 08934 local_push_gen(struct parser_params *parser, int inherit_dvars) 08935 { 08936 struct local_vars *local; 08937 08938 local = ALLOC(struct local_vars); 08939 local->prev = lvtbl; 08940 local->args = vtable_alloc(0); 08941 local->vars = vtable_alloc(inherit_dvars ? DVARS_INHERIT : DVARS_TOPSCOPE); 08942 lvtbl = local; 08943 } 08944 08945 static void 08946 local_pop_gen(struct parser_params *parser) 08947 { 08948 struct local_vars *local = lvtbl->prev; 08949 vtable_free(lvtbl->args); 08950 vtable_free(lvtbl->vars); 08951 xfree(lvtbl); 08952 lvtbl = local; 08953 } 08954 08955 #ifndef RIPPER 08956 static ID* 08957 vtable_tblcpy(ID *buf, const struct vtable *src) 08958 { 08959 int i, cnt = vtable_size(src); 08960 08961 if (cnt > 0) { 08962 buf[0] = cnt; 08963 for (i = 0; i < cnt; i++) { 08964 buf[i] = src->tbl[i]; 08965 } 08966 return buf; 08967 } 08968 return 0; 08969 } 08970 08971 static ID* 08972 local_tbl_gen(struct parser_params *parser) 08973 { 08974 int cnt = vtable_size(lvtbl->args) + vtable_size(lvtbl->vars); 08975 ID *buf; 08976 08977 if (cnt <= 0) return 0; 08978 buf = ALLOC_N(ID, cnt + 1); 08979 vtable_tblcpy(buf+1, lvtbl->args); 08980 vtable_tblcpy(buf+vtable_size(lvtbl->args)+1, lvtbl->vars); 08981 buf[0] = cnt; 08982 return buf; 08983 } 08984 #endif 08985 08986 static int 08987 arg_var_gen(struct parser_params *parser, ID id) 08988 { 08989 vtable_add(lvtbl->args, id); 08990 return vtable_size(lvtbl->args) - 1; 08991 } 08992 08993 static int 08994 local_var_gen(struct parser_params *parser, ID id) 08995 { 08996 vtable_add(lvtbl->vars, id); 08997 return vtable_size(lvtbl->vars) - 1; 08998 } 08999 09000 static int 09001 local_id_gen(struct parser_params *parser, ID id) 09002 { 09003 struct vtable *vars, *args; 09004 09005 vars = lvtbl->vars; 09006 args = lvtbl->args; 09007 09008 while (vars && POINTER_P(vars->prev)) { 09009 vars = vars->prev; 09010 args = args->prev; 09011 } 09012 09013 if (vars && vars->prev == DVARS_INHERIT) { 09014 return rb_local_defined(id); 09015 } 09016 else { 09017 return (vtable_included(args, id) || 09018 vtable_included(vars, id)); 09019 } 09020 } 09021 09022 static const struct vtable * 09023 dyna_push_gen(struct parser_params *parser) 09024 { 09025 lvtbl->args = vtable_alloc(lvtbl->args); 09026 lvtbl->vars = vtable_alloc(lvtbl->vars); 09027 return lvtbl->args; 09028 } 09029 09030 static void 09031 dyna_pop_1(struct parser_params *parser) 09032 { 09033 struct vtable *tmp; 09034 09035 tmp = lvtbl->args; 09036 lvtbl->args = lvtbl->args->prev; 09037 vtable_free(tmp); 09038 tmp = lvtbl->vars; 09039 lvtbl->vars = lvtbl->vars->prev; 09040 vtable_free(tmp); 09041 } 09042 09043 static void 09044 dyna_pop_gen(struct parser_params *parser, const struct vtable *lvargs) 09045 { 09046 while (lvtbl->args != lvargs) { 09047 dyna_pop_1(parser); 09048 if (!lvtbl->args) { 09049 struct local_vars *local = lvtbl->prev; 09050 xfree(lvtbl); 09051 lvtbl = local; 09052 } 09053 } 09054 dyna_pop_1(parser); 09055 } 09056 09057 static int 09058 dyna_in_block_gen(struct parser_params *parser) 09059 { 09060 return POINTER_P(lvtbl->vars) && lvtbl->vars->prev != DVARS_TOPSCOPE; 09061 } 09062 09063 static int 09064 dvar_defined_gen(struct parser_params *parser, ID id) 09065 { 09066 struct vtable *vars, *args; 09067 09068 args = lvtbl->args; 09069 vars = lvtbl->vars; 09070 09071 while (POINTER_P(vars)) { 09072 if (vtable_included(args, id)) { 09073 return 1; 09074 } 09075 if (vtable_included(vars, id)) { 09076 return 1; 09077 } 09078 args = args->prev; 09079 vars = vars->prev; 09080 } 09081 09082 if (vars == DVARS_INHERIT) { 09083 return rb_dvar_defined(id); 09084 } 09085 09086 return 0; 09087 } 09088 09089 static int 09090 dvar_curr_gen(struct parser_params *parser, ID id) 09091 { 09092 return (vtable_included(lvtbl->args, id) || 09093 vtable_included(lvtbl->vars, id)); 09094 } 09095 09096 #ifndef RIPPER 09097 VALUE rb_reg_compile(VALUE str, int options, const char *sourcefile, int sourceline); 09098 VALUE rb_reg_check_preprocess(VALUE); 09099 09100 static void 09101 reg_fragment_setenc_gen(struct parser_params* parser, VALUE str, int options) 09102 { 09103 int c = RE_OPTION_ENCODING_IDX(options); 09104 09105 if (c) { 09106 int opt, idx; 09107 rb_char_to_option_kcode(c, &opt, &idx); 09108 if (idx != ENCODING_GET(str) && 09109 rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) { 09110 goto error; 09111 } 09112 ENCODING_SET(str, idx); 09113 } 09114 else if (RE_OPTION_ENCODING_NONE(options)) { 09115 if (!ENCODING_IS_ASCII8BIT(str) && 09116 rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) { 09117 c = 'n'; 09118 goto error; 09119 } 09120 rb_enc_associate(str, rb_ascii8bit_encoding()); 09121 } 09122 else if (parser->enc == rb_usascii_encoding()) { 09123 if (rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) { 09124 /* raise in re.c */ 09125 rb_enc_associate(str, rb_usascii_encoding()); 09126 } 09127 else { 09128 rb_enc_associate(str, rb_ascii8bit_encoding()); 09129 } 09130 } 09131 return; 09132 09133 error: 09134 compile_error(PARSER_ARG 09135 "regexp encoding option '%c' differs from source encoding '%s'", 09136 c, rb_enc_name(rb_enc_get(str))); 09137 } 09138 09139 static int 09140 reg_fragment_check_gen(struct parser_params* parser, VALUE str, int options) 09141 { 09142 VALUE err; 09143 reg_fragment_setenc(str, options); 09144 err = rb_reg_check_preprocess(str); 09145 if (err != Qnil) { 09146 err = rb_obj_as_string(err); 09147 compile_error(PARSER_ARG "%s", RSTRING_PTR(err)); 09148 RB_GC_GUARD(err); 09149 return 0; 09150 } 09151 return 1; 09152 } 09153 09154 typedef struct { 09155 struct parser_params* parser; 09156 rb_encoding *enc; 09157 NODE *succ_block; 09158 NODE *fail_block; 09159 int num; 09160 } reg_named_capture_assign_t; 09161 09162 static int 09163 reg_named_capture_assign_iter(const OnigUChar *name, const OnigUChar *name_end, 09164 int back_num, int *back_refs, OnigRegex regex, void *arg0) 09165 { 09166 reg_named_capture_assign_t *arg = (reg_named_capture_assign_t*)arg0; 09167 struct parser_params* parser = arg->parser; 09168 rb_encoding *enc = arg->enc; 09169 long len = name_end - name; 09170 const char *s = (const char *)name; 09171 ID var; 09172 09173 arg->num++; 09174 09175 if (arg->succ_block == 0) { 09176 arg->succ_block = NEW_BEGIN(0); 09177 arg->fail_block = NEW_BEGIN(0); 09178 } 09179 09180 if (!len || (*name != '_' && ISASCII(*name) && !rb_enc_islower(*name, enc)) || 09181 (len < MAX_WORD_LENGTH && rb_reserved_word(s, (int)len)) || 09182 !rb_enc_symname2_p(s, len, enc)) { 09183 return ST_CONTINUE; 09184 } 09185 var = rb_intern3(s, len, enc); 09186 if (dvar_defined(var) || local_id(var)) { 09187 rb_warningS("named capture conflicts a local variable - %s", 09188 rb_id2name(var)); 09189 } 09190 arg->succ_block = block_append(arg->succ_block, 09191 newline_node(node_assign(assignable(var,0), 09192 NEW_CALL( 09193 gettable(rb_intern("$~")), 09194 idAREF, 09195 NEW_LIST(NEW_LIT(ID2SYM(var)))) 09196 ))); 09197 arg->fail_block = block_append(arg->fail_block, 09198 newline_node(node_assign(assignable(var,0), NEW_LIT(Qnil)))); 09199 return ST_CONTINUE; 09200 } 09201 09202 static NODE * 09203 reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp, NODE *match) 09204 { 09205 reg_named_capture_assign_t arg; 09206 09207 arg.parser = parser; 09208 arg.enc = rb_enc_get(regexp); 09209 arg.succ_block = 0; 09210 arg.fail_block = 0; 09211 arg.num = 0; 09212 onig_foreach_name(RREGEXP(regexp)->ptr, reg_named_capture_assign_iter, (void*)&arg); 09213 09214 if (arg.num == 0) 09215 return match; 09216 09217 return 09218 block_append( 09219 newline_node(match), 09220 NEW_IF(gettable(rb_intern("$~")), 09221 block_append( 09222 newline_node(arg.succ_block), 09223 newline_node( 09224 NEW_CALL( 09225 gettable(rb_intern("$~")), 09226 rb_intern("begin"), 09227 NEW_LIST(NEW_LIT(INT2FIX(0)))))), 09228 block_append( 09229 newline_node(arg.fail_block), 09230 newline_node( 09231 NEW_LIT(Qnil))))); 09232 } 09233 09234 static VALUE 09235 reg_compile_gen(struct parser_params* parser, VALUE str, int options) 09236 { 09237 VALUE re; 09238 VALUE err; 09239 09240 reg_fragment_setenc(str, options); 09241 err = rb_errinfo(); 09242 re = rb_reg_compile(str, options & RE_OPTION_MASK, ruby_sourcefile, ruby_sourceline); 09243 if (NIL_P(re)) { 09244 ID mesg = rb_intern("mesg"); 09245 VALUE m = rb_attr_get(rb_errinfo(), mesg); 09246 rb_set_errinfo(err); 09247 if (!NIL_P(err)) { 09248 rb_str_append(rb_str_cat(rb_attr_get(err, mesg), "\n", 1), m); 09249 } 09250 else { 09251 compile_error(PARSER_ARG "%s", RSTRING_PTR(m)); 09252 } 09253 return Qnil; 09254 } 09255 return re; 09256 } 09257 09258 void 09259 rb_gc_mark_parser(void) 09260 { 09261 } 09262 09263 NODE* 09264 rb_parser_append_print(VALUE vparser, NODE *node) 09265 { 09266 NODE *prelude = 0; 09267 NODE *scope = node; 09268 struct parser_params *parser; 09269 09270 if (!node) return node; 09271 09272 TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); 09273 09274 node = node->nd_body; 09275 09276 if (nd_type(node) == NODE_PRELUDE) { 09277 prelude = node; 09278 node = node->nd_body; 09279 } 09280 09281 node = block_append(node, 09282 NEW_FCALL(rb_intern("print"), 09283 NEW_ARRAY(NEW_GVAR(rb_intern("$_"))))); 09284 if (prelude) { 09285 prelude->nd_body = node; 09286 scope->nd_body = prelude; 09287 } 09288 else { 09289 scope->nd_body = node; 09290 } 09291 09292 return scope; 09293 } 09294 09295 NODE * 09296 rb_parser_while_loop(VALUE vparser, NODE *node, int chop, int split) 09297 { 09298 NODE *prelude = 0; 09299 NODE *scope = node; 09300 struct parser_params *parser; 09301 09302 if (!node) return node; 09303 09304 TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); 09305 09306 node = node->nd_body; 09307 09308 if (nd_type(node) == NODE_PRELUDE) { 09309 prelude = node; 09310 node = node->nd_body; 09311 } 09312 if (split) { 09313 node = block_append(NEW_GASGN(rb_intern("$F"), 09314 NEW_CALL(NEW_GVAR(rb_intern("$_")), 09315 rb_intern("split"), 0)), 09316 node); 09317 } 09318 if (chop) { 09319 node = block_append(NEW_CALL(NEW_GVAR(rb_intern("$_")), 09320 rb_intern("chop!"), 0), node); 09321 } 09322 09323 node = NEW_OPT_N(node); 09324 09325 if (prelude) { 09326 prelude->nd_body = node; 09327 scope->nd_body = prelude; 09328 } 09329 else { 09330 scope->nd_body = node; 09331 } 09332 09333 return scope; 09334 } 09335 09336 static const struct { 09337 ID token; 09338 const char *name; 09339 } op_tbl[] = { 09340 {tDOT2, ".."}, 09341 {tDOT3, "..."}, 09342 {'+', "+(binary)"}, 09343 {'-', "-(binary)"}, 09344 {tPOW, "**"}, 09345 {tUPLUS, "+@"}, 09346 {tUMINUS, "-@"}, 09347 {tCMP, "<=>"}, 09348 {tGEQ, ">="}, 09349 {tLEQ, "<="}, 09350 {tEQ, "=="}, 09351 {tEQQ, "==="}, 09352 {tNEQ, "!="}, 09353 {tMATCH, "=~"}, 09354 {tNMATCH, "!~"}, 09355 {tAREF, "[]"}, 09356 {tASET, "[]="}, 09357 {tLSHFT, "<<"}, 09358 {tRSHFT, ">>"}, 09359 {tCOLON2, "::"}, 09360 }; 09361 09362 #define op_tbl_count numberof(op_tbl) 09363 09364 #ifndef ENABLE_SELECTOR_NAMESPACE 09365 #define ENABLE_SELECTOR_NAMESPACE 0 09366 #endif 09367 09368 static struct symbols { 09369 ID last_id; 09370 st_table *sym_id; 09371 st_table *id_str; 09372 #if ENABLE_SELECTOR_NAMESPACE 09373 st_table *ivar2_id; 09374 st_table *id_ivar2; 09375 #endif 09376 VALUE op_sym[tLAST_TOKEN]; 09377 } global_symbols = {tLAST_ID}; 09378 09379 static const struct st_hash_type symhash = { 09380 rb_str_hash_cmp, 09381 rb_str_hash, 09382 }; 09383 09384 #if ENABLE_SELECTOR_NAMESPACE 09385 struct ivar2_key { 09386 ID id; 09387 VALUE klass; 09388 }; 09389 09390 static int 09391 ivar2_cmp(struct ivar2_key *key1, struct ivar2_key *key2) 09392 { 09393 if (key1->id == key2->id && key1->klass == key2->klass) { 09394 return 0; 09395 } 09396 return 1; 09397 } 09398 09399 static int 09400 ivar2_hash(struct ivar2_key *key) 09401 { 09402 return (key->id << 8) ^ (key->klass >> 2); 09403 } 09404 09405 static const struct st_hash_type ivar2_hash_type = { 09406 ivar2_cmp, 09407 ivar2_hash, 09408 }; 09409 #endif 09410 09411 void 09412 Init_sym(void) 09413 { 09414 global_symbols.sym_id = st_init_table_with_size(&symhash, 1000); 09415 global_symbols.id_str = st_init_numtable_with_size(1000); 09416 #if ENABLE_SELECTOR_NAMESPACE 09417 global_symbols.ivar2_id = st_init_table_with_size(&ivar2_hash_type, 1000); 09418 global_symbols.id_ivar2 = st_init_numtable_with_size(1000); 09419 #endif 09420 09421 Init_id(); 09422 } 09423 09424 void 09425 rb_gc_mark_symbols(void) 09426 { 09427 rb_mark_tbl(global_symbols.id_str); 09428 rb_gc_mark_locations(global_symbols.op_sym, 09429 global_symbols.op_sym + tLAST_TOKEN); 09430 } 09431 #endif /* !RIPPER */ 09432 09433 static ID 09434 internal_id_gen(struct parser_params *parser) 09435 { 09436 ID id = (ID)vtable_size(lvtbl->args) + (ID)vtable_size(lvtbl->vars); 09437 id += ((tLAST_TOKEN - ID_INTERNAL) >> ID_SCOPE_SHIFT) + 1; 09438 return ID_INTERNAL | (id << ID_SCOPE_SHIFT); 09439 } 09440 09441 #ifndef RIPPER 09442 static int 09443 is_special_global_name(const char *m, const char *e, rb_encoding *enc) 09444 { 09445 int mb = 0; 09446 09447 if (m >= e) return 0; 09448 switch (*m) { 09449 case '~': case '*': case '$': case '?': case '!': case '@': 09450 case '/': case '\\': case ';': case ',': case '.': case '=': 09451 case ':': case '<': case '>': case '\"': 09452 case '&': case '`': case '\'': case '+': 09453 case '0': 09454 ++m; 09455 break; 09456 case '-': 09457 ++m; 09458 if (m < e && is_identchar(m, e, enc)) { 09459 if (!ISASCII(*m)) mb = 1; 09460 m += rb_enc_mbclen(m, e, enc); 09461 } 09462 break; 09463 default: 09464 if (!rb_enc_isdigit(*m, enc)) return 0; 09465 do { 09466 if (!ISASCII(*m)) mb = 1; 09467 ++m; 09468 } while (m < e && rb_enc_isdigit(*m, enc)); 09469 } 09470 return m == e ? mb + 1 : 0; 09471 } 09472 09473 int 09474 rb_symname_p(const char *name) 09475 { 09476 return rb_enc_symname_p(name, rb_ascii8bit_encoding()); 09477 } 09478 09479 int 09480 rb_enc_symname_p(const char *name, rb_encoding *enc) 09481 { 09482 return rb_enc_symname2_p(name, strlen(name), enc); 09483 } 09484 09485 int 09486 rb_enc_symname2_p(const char *name, long len, rb_encoding *enc) 09487 { 09488 const char *m = name; 09489 const char *e = m + len; 09490 int localid = FALSE; 09491 09492 if (!m) return FALSE; 09493 switch (*m) { 09494 case '\0': 09495 return FALSE; 09496 09497 case '$': 09498 if (is_special_global_name(++m, e, enc)) return TRUE; 09499 goto id; 09500 09501 case '@': 09502 if (*++m == '@') ++m; 09503 goto id; 09504 09505 case '<': 09506 switch (*++m) { 09507 case '<': ++m; break; 09508 case '=': if (*++m == '>') ++m; break; 09509 default: break; 09510 } 09511 break; 09512 09513 case '>': 09514 switch (*++m) { 09515 case '>': case '=': ++m; break; 09516 } 09517 break; 09518 09519 case '=': 09520 switch (*++m) { 09521 case '~': ++m; break; 09522 case '=': if (*++m == '=') ++m; break; 09523 default: return FALSE; 09524 } 09525 break; 09526 09527 case '*': 09528 if (*++m == '*') ++m; 09529 break; 09530 09531 case '+': case '-': 09532 if (*++m == '@') ++m; 09533 break; 09534 09535 case '|': case '^': case '&': case '/': case '%': case '~': case '`': 09536 ++m; 09537 break; 09538 09539 case '[': 09540 if (*++m != ']') return FALSE; 09541 if (*++m == '=') ++m; 09542 break; 09543 09544 case '!': 09545 switch (*++m) { 09546 case '\0': return TRUE; 09547 case '=': case '~': ++m; break; 09548 default: return FALSE; 09549 } 09550 break; 09551 09552 default: 09553 localid = !rb_enc_isupper(*m, enc); 09554 id: 09555 if (m >= e || (*m != '_' && !rb_enc_isalpha(*m, enc) && ISASCII(*m))) 09556 return FALSE; 09557 while (m < e && is_identchar(m, e, enc)) m += rb_enc_mbclen(m, e, enc); 09558 if (localid) { 09559 switch (*m) { 09560 case '!': case '?': case '=': ++m; 09561 } 09562 } 09563 break; 09564 } 09565 return m == e; 09566 } 09567 09568 static ID 09569 register_symid(ID id, const char *name, long len, rb_encoding *enc) 09570 { 09571 VALUE str = rb_enc_str_new(name, len, enc); 09572 OBJ_FREEZE(str); 09573 st_add_direct(global_symbols.sym_id, (st_data_t)str, id); 09574 st_add_direct(global_symbols.id_str, id, (st_data_t)str); 09575 return id; 09576 } 09577 09578 ID 09579 rb_intern3(const char *name, long len, rb_encoding *enc) 09580 { 09581 const char *m = name; 09582 const char *e = m + len; 09583 unsigned char c; 09584 VALUE str; 09585 ID id; 09586 long last; 09587 int mb; 09588 st_data_t data; 09589 struct RString fake_str; 09590 fake_str.basic.flags = T_STRING|RSTRING_NOEMBED|FL_FREEZE; 09591 fake_str.basic.klass = rb_cString; 09592 fake_str.as.heap.len = len; 09593 fake_str.as.heap.ptr = (char *)name; 09594 fake_str.as.heap.aux.capa = len; 09595 str = (VALUE)&fake_str; 09596 rb_enc_associate(str, enc); 09597 09598 if (rb_enc_str_coderange(str) == ENC_CODERANGE_BROKEN) { 09599 rb_raise(rb_eEncodingError, "invalid encoding symbol"); 09600 } 09601 09602 if (st_lookup(global_symbols.sym_id, str, &data)) 09603 return (ID)data; 09604 09605 if (rb_cString && !rb_enc_asciicompat(enc)) { 09606 id = ID_JUNK; 09607 goto new_id; 09608 } 09609 last = len-1; 09610 id = 0; 09611 switch (*m) { 09612 case '$': 09613 id |= ID_GLOBAL; 09614 if ((mb = is_special_global_name(++m, e, enc)) != 0) { 09615 if (!--mb) enc = rb_ascii8bit_encoding(); 09616 goto new_id; 09617 } 09618 break; 09619 case '@': 09620 if (m[1] == '@') { 09621 m++; 09622 id |= ID_CLASS; 09623 } 09624 else { 09625 id |= ID_INSTANCE; 09626 } 09627 m++; 09628 break; 09629 default: 09630 c = m[0]; 09631 if (c != '_' && rb_enc_isascii(c, enc) && rb_enc_ispunct(c, enc)) { 09632 /* operators */ 09633 int i; 09634 09635 if (len == 1) { 09636 id = c; 09637 goto id_register; 09638 } 09639 for (i = 0; i < op_tbl_count; i++) { 09640 if (*op_tbl[i].name == *m && 09641 strcmp(op_tbl[i].name, m) == 0) { 09642 id = op_tbl[i].token; 09643 goto id_register; 09644 } 09645 } 09646 } 09647 09648 if (m[last] == '=') { 09649 /* attribute assignment */ 09650 id = rb_intern3(name, last, enc); 09651 if (id > tLAST_TOKEN && !is_attrset_id(id)) { 09652 enc = rb_enc_get(rb_id2str(id)); 09653 id = rb_id_attrset(id); 09654 goto id_register; 09655 } 09656 id = ID_ATTRSET; 09657 } 09658 else if (rb_enc_isupper(m[0], enc)) { 09659 id = ID_CONST; 09660 } 09661 else { 09662 id = ID_LOCAL; 09663 } 09664 break; 09665 } 09666 mb = 0; 09667 if (!rb_enc_isdigit(*m, enc)) { 09668 while (m <= name + last && is_identchar(m, e, enc)) { 09669 if (ISASCII(*m)) { 09670 m++; 09671 } 09672 else { 09673 mb = 1; 09674 m += rb_enc_mbclen(m, e, enc); 09675 } 09676 } 09677 } 09678 if (m - name < len) id = ID_JUNK; 09679 if (enc != rb_usascii_encoding()) { 09680 /* 09681 * this clause makes sense only when called from other than 09682 * rb_intern_str() taking care of code-range. 09683 */ 09684 if (!mb) { 09685 for (; m <= name + len; ++m) { 09686 if (!ISASCII(*m)) goto mbstr; 09687 } 09688 enc = rb_usascii_encoding(); 09689 } 09690 mbstr:; 09691 } 09692 new_id: 09693 if (global_symbols.last_id >= ~(ID)0 >> (ID_SCOPE_SHIFT+RUBY_SPECIAL_SHIFT)) { 09694 if (len > 20) { 09695 rb_raise(rb_eRuntimeError, "symbol table overflow (symbol %.20s...)", 09696 name); 09697 } 09698 else { 09699 rb_raise(rb_eRuntimeError, "symbol table overflow (symbol %.*s)", 09700 (int)len, name); 09701 } 09702 } 09703 id |= ++global_symbols.last_id << ID_SCOPE_SHIFT; 09704 id_register: 09705 return register_symid(id, name, len, enc); 09706 } 09707 09708 ID 09709 rb_intern2(const char *name, long len) 09710 { 09711 return rb_intern3(name, len, rb_usascii_encoding()); 09712 } 09713 09714 #undef rb_intern 09715 ID 09716 rb_intern(const char *name) 09717 { 09718 return rb_intern2(name, strlen(name)); 09719 } 09720 09721 ID 09722 rb_intern_str(VALUE str) 09723 { 09724 rb_encoding *enc; 09725 ID id; 09726 09727 if (rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) { 09728 enc = rb_usascii_encoding(); 09729 } 09730 else { 09731 enc = rb_enc_get(str); 09732 } 09733 id = rb_intern3(RSTRING_PTR(str), RSTRING_LEN(str), enc); 09734 RB_GC_GUARD(str); 09735 return id; 09736 } 09737 09738 VALUE 09739 rb_id2str(ID id) 09740 { 09741 st_data_t data; 09742 09743 if (id < tLAST_TOKEN) { 09744 int i = 0; 09745 09746 if (id < INT_MAX && rb_ispunct((int)id)) { 09747 VALUE str = global_symbols.op_sym[i = (int)id]; 09748 if (!str) { 09749 char name[2]; 09750 name[0] = (char)id; 09751 name[1] = 0; 09752 str = rb_usascii_str_new(name, 1); 09753 OBJ_FREEZE(str); 09754 global_symbols.op_sym[i] = str; 09755 } 09756 return str; 09757 } 09758 for (i = 0; i < op_tbl_count; i++) { 09759 if (op_tbl[i].token == id) { 09760 VALUE str = global_symbols.op_sym[i]; 09761 if (!str) { 09762 str = rb_usascii_str_new2(op_tbl[i].name); 09763 OBJ_FREEZE(str); 09764 global_symbols.op_sym[i] = str; 09765 } 09766 return str; 09767 } 09768 } 09769 } 09770 09771 if (st_lookup(global_symbols.id_str, id, &data)) { 09772 VALUE str = (VALUE)data; 09773 if (RBASIC(str)->klass == 0) 09774 RBASIC(str)->klass = rb_cString; 09775 return str; 09776 } 09777 09778 if (is_attrset_id(id)) { 09779 ID id2 = (id & ~ID_SCOPE_MASK) | ID_LOCAL; 09780 VALUE str; 09781 09782 while (!(str = rb_id2str(id2))) { 09783 if (!is_local_id(id2)) return 0; 09784 id2 = (id & ~ID_SCOPE_MASK) | ID_CONST; 09785 } 09786 str = rb_str_dup(str); 09787 rb_str_cat(str, "=", 1); 09788 rb_intern_str(str); 09789 if (st_lookup(global_symbols.id_str, id, &data)) { 09790 VALUE str = (VALUE)data; 09791 if (RBASIC(str)->klass == 0) 09792 RBASIC(str)->klass = rb_cString; 09793 return str; 09794 } 09795 } 09796 return 0; 09797 } 09798 09799 const char * 09800 rb_id2name(ID id) 09801 { 09802 VALUE str = rb_id2str(id); 09803 09804 if (!str) return 0; 09805 return RSTRING_PTR(str); 09806 } 09807 09808 static int 09809 symbols_i(VALUE sym, ID value, VALUE ary) 09810 { 09811 rb_ary_push(ary, ID2SYM(value)); 09812 return ST_CONTINUE; 09813 } 09814 09815 /* 09816 * call-seq: 09817 * Symbol.all_symbols => array 09818 * 09819 * Returns an array of all the symbols currently in Ruby's symbol 09820 * table. 09821 * 09822 * Symbol.all_symbols.size #=> 903 09823 * Symbol.all_symbols[1,20] #=> [:floor, :ARGV, :Binding, :symlink, 09824 * :chown, :EOFError, :$;, :String, 09825 * :LOCK_SH, :"setuid?", :$<, 09826 * :default_proc, :compact, :extend, 09827 * :Tms, :getwd, :$=, :ThreadGroup, 09828 * :wait2, :$>] 09829 */ 09830 09831 VALUE 09832 rb_sym_all_symbols(void) 09833 { 09834 VALUE ary = rb_ary_new2(global_symbols.sym_id->num_entries); 09835 09836 st_foreach(global_symbols.sym_id, symbols_i, ary); 09837 return ary; 09838 } 09839 09840 int 09841 rb_is_const_id(ID id) 09842 { 09843 return is_const_id(id); 09844 } 09845 09846 int 09847 rb_is_class_id(ID id) 09848 { 09849 return is_class_id(id); 09850 } 09851 09852 int 09853 rb_is_instance_id(ID id) 09854 { 09855 return is_instance_id(id); 09856 } 09857 09858 int 09859 rb_is_local_id(ID id) 09860 { 09861 return is_local_id(id); 09862 } 09863 09864 int 09865 rb_is_junk_id(ID id) 09866 { 09867 return is_junk_id(id); 09868 } 09869 09870 #endif /* !RIPPER */ 09871 09872 static void 09873 parser_initialize(struct parser_params *parser) 09874 { 09875 parser->eofp = Qfalse; 09876 09877 parser->parser_lex_strterm = 0; 09878 parser->parser_cond_stack = 0; 09879 parser->parser_cmdarg_stack = 0; 09880 parser->parser_class_nest = 0; 09881 parser->parser_paren_nest = 0; 09882 parser->parser_lpar_beg = 0; 09883 parser->parser_in_single = 0; 09884 parser->parser_in_def = 0; 09885 parser->parser_in_defined = 0; 09886 parser->parser_compile_for_eval = 0; 09887 parser->parser_cur_mid = 0; 09888 parser->parser_tokenbuf = NULL; 09889 parser->parser_tokidx = 0; 09890 parser->parser_toksiz = 0; 09891 parser->parser_heredoc_end = 0; 09892 parser->parser_command_start = TRUE; 09893 parser->parser_deferred_nodes = 0; 09894 parser->parser_lex_pbeg = 0; 09895 parser->parser_lex_p = 0; 09896 parser->parser_lex_pend = 0; 09897 parser->parser_lvtbl = 0; 09898 parser->parser_ruby__end__seen = 0; 09899 parser->parser_ruby_sourcefile = 0; 09900 #ifndef RIPPER 09901 parser->is_ripper = 0; 09902 parser->parser_eval_tree_begin = 0; 09903 parser->parser_eval_tree = 0; 09904 #else 09905 parser->is_ripper = 1; 09906 parser->parser_ruby_sourcefile_string = Qnil; 09907 parser->delayed = Qnil; 09908 09909 parser->result = Qnil; 09910 parser->parsing_thread = Qnil; 09911 parser->toplevel_p = TRUE; 09912 #endif 09913 #ifdef YYMALLOC 09914 parser->heap = NULL; 09915 #endif 09916 parser->enc = rb_usascii_encoding(); 09917 } 09918 09919 #ifdef RIPPER 09920 #define parser_mark ripper_parser_mark 09921 #define parser_free ripper_parser_free 09922 #endif 09923 09924 static void 09925 parser_mark(void *ptr) 09926 { 09927 struct parser_params *p = (struct parser_params*)ptr; 09928 09929 rb_gc_mark((VALUE)p->parser_lex_strterm); 09930 rb_gc_mark((VALUE)p->parser_deferred_nodes); 09931 rb_gc_mark(p->parser_lex_input); 09932 rb_gc_mark(p->parser_lex_lastline); 09933 rb_gc_mark(p->parser_lex_nextline); 09934 #ifndef RIPPER 09935 rb_gc_mark((VALUE)p->parser_eval_tree_begin) ; 09936 rb_gc_mark((VALUE)p->parser_eval_tree) ; 09937 rb_gc_mark(p->debug_lines); 09938 #else 09939 rb_gc_mark(p->parser_ruby_sourcefile_string); 09940 rb_gc_mark(p->delayed); 09941 rb_gc_mark(p->value); 09942 rb_gc_mark(p->result); 09943 rb_gc_mark(p->parsing_thread); 09944 #endif 09945 #ifdef YYMALLOC 09946 rb_gc_mark((VALUE)p->heap); 09947 #endif 09948 } 09949 09950 static void 09951 parser_free(void *ptr) 09952 { 09953 struct parser_params *p = (struct parser_params*)ptr; 09954 struct local_vars *local, *prev; 09955 09956 if (p->parser_tokenbuf) { 09957 xfree(p->parser_tokenbuf); 09958 } 09959 for (local = p->parser_lvtbl; local; local = prev) { 09960 if (local->vars) xfree(local->vars); 09961 prev = local->prev; 09962 xfree(local); 09963 } 09964 #ifndef RIPPER 09965 xfree(p->parser_ruby_sourcefile); 09966 #endif 09967 xfree(p); 09968 } 09969 09970 static size_t 09971 parser_memsize(const void *ptr) 09972 { 09973 struct parser_params *p = (struct parser_params*)ptr; 09974 struct local_vars *local; 09975 size_t size = sizeof(*p); 09976 09977 if (!ptr) return 0; 09978 size += p->parser_toksiz; 09979 for (local = p->parser_lvtbl; local; local = local->prev) { 09980 size += sizeof(*local); 09981 if (local->vars) size += local->vars->capa * sizeof(ID); 09982 } 09983 #ifndef RIPPER 09984 if (p->parser_ruby_sourcefile) { 09985 size += strlen(p->parser_ruby_sourcefile) + 1; 09986 } 09987 #endif 09988 return size; 09989 } 09990 09991 static const rb_data_type_t parser_data_type = { 09992 "parser", 09993 parser_mark, 09994 parser_free, 09995 parser_memsize, 09996 }; 09997 09998 VALUE rb_parser_get_yydebug(VALUE); 09999 VALUE rb_parser_set_yydebug(VALUE, VALUE); 10000 10001 #ifndef RIPPER 10002 #undef rb_reserved_word 10003 10004 const struct kwtable * 10005 rb_reserved_word(const char *str, unsigned int len) 10006 { 10007 return reserved_word(str, len); 10008 } 10009 10010 static struct parser_params * 10011 parser_new(void) 10012 { 10013 struct parser_params *p; 10014 10015 p = ALLOC_N(struct parser_params, 1); 10016 MEMZERO(p, struct parser_params, 1); 10017 parser_initialize(p); 10018 return p; 10019 } 10020 10021 VALUE 10022 rb_parser_new(void) 10023 { 10024 struct parser_params *p = parser_new(); 10025 10026 return TypedData_Wrap_Struct(0, &parser_data_type, p); 10027 } 10028 10029 /* 10030 * call-seq: 10031 * ripper#end_seen? -> Boolean 10032 * 10033 * Return if parsed source ended by +\_\_END\_\_+. 10034 * This number starts from 1. 10035 */ 10036 VALUE 10037 rb_parser_end_seen_p(VALUE vparser) 10038 { 10039 struct parser_params *parser; 10040 10041 TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); 10042 return ruby__end__seen ? Qtrue : Qfalse; 10043 } 10044 10045 /* 10046 * call-seq: 10047 * ripper#encoding -> encoding 10048 * 10049 * Return encoding of the source. 10050 */ 10051 VALUE 10052 rb_parser_encoding(VALUE vparser) 10053 { 10054 struct parser_params *parser; 10055 10056 TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); 10057 return rb_enc_from_encoding(parser->enc); 10058 } 10059 10060 /* 10061 * call-seq: 10062 * ripper.yydebug -> true or false 10063 * 10064 * Get yydebug. 10065 */ 10066 VALUE 10067 rb_parser_get_yydebug(VALUE self) 10068 { 10069 struct parser_params *parser; 10070 10071 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10072 return yydebug ? Qtrue : Qfalse; 10073 } 10074 10075 /* 10076 * call-seq: 10077 * ripper.yydebug = flag 10078 * 10079 * Set yydebug. 10080 */ 10081 VALUE 10082 rb_parser_set_yydebug(VALUE self, VALUE flag) 10083 { 10084 struct parser_params *parser; 10085 10086 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10087 yydebug = RTEST(flag); 10088 return flag; 10089 } 10090 10091 #ifdef YYMALLOC 10092 #define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE)) 10093 #define NEWHEAP() rb_node_newnode(NODE_ALLOCA, 0, (VALUE)parser->heap, 0) 10094 #define ADD2HEAP(n, c, p) ((parser->heap = (n))->u1.node = (p), \ 10095 (n)->u3.cnt = (c), (p)) 10096 10097 void * 10098 rb_parser_malloc(struct parser_params *parser, size_t size) 10099 { 10100 size_t cnt = HEAPCNT(1, size); 10101 NODE *n = NEWHEAP(); 10102 void *ptr = xmalloc(size); 10103 10104 return ADD2HEAP(n, cnt, ptr); 10105 } 10106 10107 void * 10108 rb_parser_calloc(struct parser_params *parser, size_t nelem, size_t size) 10109 { 10110 size_t cnt = HEAPCNT(nelem, size); 10111 NODE *n = NEWHEAP(); 10112 void *ptr = xcalloc(nelem, size); 10113 10114 return ADD2HEAP(n, cnt, ptr); 10115 } 10116 10117 void * 10118 rb_parser_realloc(struct parser_params *parser, void *ptr, size_t size) 10119 { 10120 NODE *n; 10121 size_t cnt = HEAPCNT(1, size); 10122 10123 if (ptr && (n = parser->heap) != NULL) { 10124 do { 10125 if (n->u1.node == ptr) { 10126 n->u1.node = ptr = xrealloc(ptr, size); 10127 if (n->u3.cnt) n->u3.cnt = cnt; 10128 return ptr; 10129 } 10130 } while ((n = n->u2.node) != NULL); 10131 } 10132 n = NEWHEAP(); 10133 ptr = xrealloc(ptr, size); 10134 return ADD2HEAP(n, cnt, ptr); 10135 } 10136 10137 void 10138 rb_parser_free(struct parser_params *parser, void *ptr) 10139 { 10140 NODE **prev = &parser->heap, *n; 10141 10142 while ((n = *prev) != NULL) { 10143 if (n->u1.node == ptr) { 10144 *prev = n->u2.node; 10145 rb_gc_force_recycle((VALUE)n); 10146 break; 10147 } 10148 prev = &n->u2.node; 10149 } 10150 xfree(ptr); 10151 } 10152 #endif 10153 #endif 10154 10155 #ifdef RIPPER 10156 #ifdef RIPPER_DEBUG 10157 extern int rb_is_pointer_to_heap(VALUE); 10158 10159 /* :nodoc: */ 10160 static VALUE 10161 ripper_validate_object(VALUE self, VALUE x) 10162 { 10163 if (x == Qfalse) return x; 10164 if (x == Qtrue) return x; 10165 if (x == Qnil) return x; 10166 if (x == Qundef) 10167 rb_raise(rb_eArgError, "Qundef given"); 10168 if (FIXNUM_P(x)) return x; 10169 if (SYMBOL_P(x)) return x; 10170 if (!rb_is_pointer_to_heap(x)) 10171 rb_raise(rb_eArgError, "invalid pointer: %p", x); 10172 switch (TYPE(x)) { 10173 case T_STRING: 10174 case T_OBJECT: 10175 case T_ARRAY: 10176 case T_BIGNUM: 10177 case T_FLOAT: 10178 return x; 10179 case T_NODE: 10180 if (nd_type(x) != NODE_LASGN) { 10181 rb_raise(rb_eArgError, "NODE given: %p", x); 10182 } 10183 return ((NODE *)x)->nd_rval; 10184 default: 10185 rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)", 10186 x, rb_obj_classname(x)); 10187 } 10188 return x; 10189 } 10190 #endif 10191 10192 #define validate(x) (x = get_value(x)) 10193 10194 static VALUE 10195 ripper_dispatch0(struct parser_params *parser, ID mid) 10196 { 10197 return rb_funcall(parser->value, mid, 0); 10198 } 10199 10200 static VALUE 10201 ripper_dispatch1(struct parser_params *parser, ID mid, VALUE a) 10202 { 10203 validate(a); 10204 return rb_funcall(parser->value, mid, 1, a); 10205 } 10206 10207 static VALUE 10208 ripper_dispatch2(struct parser_params *parser, ID mid, VALUE a, VALUE b) 10209 { 10210 validate(a); 10211 validate(b); 10212 return rb_funcall(parser->value, mid, 2, a, b); 10213 } 10214 10215 static VALUE 10216 ripper_dispatch3(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c) 10217 { 10218 validate(a); 10219 validate(b); 10220 validate(c); 10221 return rb_funcall(parser->value, mid, 3, a, b, c); 10222 } 10223 10224 static VALUE 10225 ripper_dispatch4(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d) 10226 { 10227 validate(a); 10228 validate(b); 10229 validate(c); 10230 validate(d); 10231 return rb_funcall(parser->value, mid, 4, a, b, c, d); 10232 } 10233 10234 static VALUE 10235 ripper_dispatch5(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e) 10236 { 10237 validate(a); 10238 validate(b); 10239 validate(c); 10240 validate(d); 10241 validate(e); 10242 return rb_funcall(parser->value, mid, 5, a, b, c, d, e); 10243 } 10244 10245 static const struct kw_assoc { 10246 ID id; 10247 const char *name; 10248 } keyword_to_name[] = { 10249 {keyword_class, "class"}, 10250 {keyword_module, "module"}, 10251 {keyword_def, "def"}, 10252 {keyword_undef, "undef"}, 10253 {keyword_begin, "begin"}, 10254 {keyword_rescue, "rescue"}, 10255 {keyword_ensure, "ensure"}, 10256 {keyword_end, "end"}, 10257 {keyword_if, "if"}, 10258 {keyword_unless, "unless"}, 10259 {keyword_then, "then"}, 10260 {keyword_elsif, "elsif"}, 10261 {keyword_else, "else"}, 10262 {keyword_case, "case"}, 10263 {keyword_when, "when"}, 10264 {keyword_while, "while"}, 10265 {keyword_until, "until"}, 10266 {keyword_for, "for"}, 10267 {keyword_break, "break"}, 10268 {keyword_next, "next"}, 10269 {keyword_redo, "redo"}, 10270 {keyword_retry, "retry"}, 10271 {keyword_in, "in"}, 10272 {keyword_do, "do"}, 10273 {keyword_do_cond, "do"}, 10274 {keyword_do_block, "do"}, 10275 {keyword_return, "return"}, 10276 {keyword_yield, "yield"}, 10277 {keyword_super, "super"}, 10278 {keyword_self, "self"}, 10279 {keyword_nil, "nil"}, 10280 {keyword_true, "true"}, 10281 {keyword_false, "false"}, 10282 {keyword_and, "and"}, 10283 {keyword_or, "or"}, 10284 {keyword_not, "not"}, 10285 {modifier_if, "if"}, 10286 {modifier_unless, "unless"}, 10287 {modifier_while, "while"}, 10288 {modifier_until, "until"}, 10289 {modifier_rescue, "rescue"}, 10290 {keyword_alias, "alias"}, 10291 {keyword_defined, "defined?"}, 10292 {keyword_BEGIN, "BEGIN"}, 10293 {keyword_END, "END"}, 10294 {keyword__LINE__, "__LINE__"}, 10295 {keyword__FILE__, "__FILE__"}, 10296 {keyword__ENCODING__, "__ENCODING__"}, 10297 {0, NULL} 10298 }; 10299 10300 static const char* 10301 keyword_id_to_str(ID id) 10302 { 10303 const struct kw_assoc *a; 10304 10305 for (a = keyword_to_name; a->id; a++) { 10306 if (a->id == id) 10307 return a->name; 10308 } 10309 return NULL; 10310 } 10311 10312 #undef ripper_id2sym 10313 static VALUE 10314 ripper_id2sym(ID id) 10315 { 10316 const char *name; 10317 char buf[8]; 10318 10319 if (id <= 256) { 10320 buf[0] = (char)id; 10321 buf[1] = '\0'; 10322 return ID2SYM(rb_intern2(buf, 1)); 10323 } 10324 if ((name = keyword_id_to_str(id))) { 10325 return ID2SYM(rb_intern(name)); 10326 } 10327 switch (id) { 10328 case tOROP: 10329 name = "||"; 10330 break; 10331 case tANDOP: 10332 name = "&&"; 10333 break; 10334 default: 10335 name = rb_id2name(id); 10336 if (!name) { 10337 rb_bug("cannot convert ID to string: %ld", (unsigned long)id); 10338 } 10339 return ID2SYM(id); 10340 } 10341 return ID2SYM(rb_intern(name)); 10342 } 10343 10344 static ID 10345 ripper_get_id(VALUE v) 10346 { 10347 NODE *nd; 10348 if (!RB_TYPE_P(v, T_NODE)) return 0; 10349 nd = (NODE *)v; 10350 if (nd_type(nd) != NODE_LASGN) return 0; 10351 return nd->nd_vid; 10352 } 10353 10354 static VALUE 10355 ripper_get_value(VALUE v) 10356 { 10357 NODE *nd; 10358 if (v == Qundef) return Qnil; 10359 if (!RB_TYPE_P(v, T_NODE)) return v; 10360 nd = (NODE *)v; 10361 if (nd_type(nd) != NODE_LASGN) return Qnil; 10362 return nd->nd_rval; 10363 } 10364 10365 static void 10366 ripper_compile_error(struct parser_params *parser, const char *fmt, ...) 10367 { 10368 VALUE str; 10369 va_list args; 10370 10371 va_start(args, fmt); 10372 str = rb_vsprintf(fmt, args); 10373 va_end(args); 10374 rb_funcall(parser->value, rb_intern("compile_error"), 1, str); 10375 } 10376 10377 static void 10378 ripper_warn0(struct parser_params *parser, const char *fmt) 10379 { 10380 rb_funcall(parser->value, rb_intern("warn"), 1, STR_NEW2(fmt)); 10381 } 10382 10383 static void 10384 ripper_warnI(struct parser_params *parser, const char *fmt, int a) 10385 { 10386 rb_funcall(parser->value, rb_intern("warn"), 2, 10387 STR_NEW2(fmt), INT2NUM(a)); 10388 } 10389 10390 #if 0 10391 static void 10392 ripper_warnS(struct parser_params *parser, const char *fmt, const char *str) 10393 { 10394 rb_funcall(parser->value, rb_intern("warn"), 2, 10395 STR_NEW2(fmt), STR_NEW2(str)); 10396 } 10397 #endif 10398 10399 static void 10400 ripper_warning0(struct parser_params *parser, const char *fmt) 10401 { 10402 rb_funcall(parser->value, rb_intern("warning"), 1, STR_NEW2(fmt)); 10403 } 10404 10405 static void 10406 ripper_warningS(struct parser_params *parser, const char *fmt, const char *str) 10407 { 10408 rb_funcall(parser->value, rb_intern("warning"), 2, 10409 STR_NEW2(fmt), STR_NEW2(str)); 10410 } 10411 10412 static VALUE 10413 ripper_lex_get_generic(struct parser_params *parser, VALUE src) 10414 { 10415 return rb_funcall(src, ripper_id_gets, 0); 10416 } 10417 10418 static VALUE 10419 ripper_s_allocate(VALUE klass) 10420 { 10421 struct parser_params *p; 10422 VALUE self; 10423 10424 p = ALLOC_N(struct parser_params, 1); 10425 MEMZERO(p, struct parser_params, 1); 10426 self = TypedData_Wrap_Struct(klass, &parser_data_type, p); 10427 p->value = self; 10428 return self; 10429 } 10430 10431 #define ripper_initialized_p(r) ((r)->parser_lex_input != 0) 10432 10433 /* 10434 * call-seq: 10435 * Ripper.new(src, filename="(ripper)", lineno=1) -> ripper 10436 * 10437 * Create a new Ripper object. 10438 * _src_ must be a String, an IO, or an Object which has #gets method. 10439 * 10440 * This method does not starts parsing. 10441 * See also Ripper#parse and Ripper.parse. 10442 */ 10443 static VALUE 10444 ripper_initialize(int argc, VALUE *argv, VALUE self) 10445 { 10446 struct parser_params *parser; 10447 VALUE src, fname, lineno; 10448 10449 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10450 rb_scan_args(argc, argv, "12", &src, &fname, &lineno); 10451 if (rb_obj_respond_to(src, ripper_id_gets, 0)) { 10452 parser->parser_lex_gets = ripper_lex_get_generic; 10453 } 10454 else { 10455 StringValue(src); 10456 parser->parser_lex_gets = lex_get_str; 10457 } 10458 parser->parser_lex_input = src; 10459 parser->eofp = Qfalse; 10460 if (NIL_P(fname)) { 10461 fname = STR_NEW2("(ripper)"); 10462 } 10463 else { 10464 StringValue(fname); 10465 } 10466 parser_initialize(parser); 10467 10468 parser->parser_ruby_sourcefile_string = fname; 10469 parser->parser_ruby_sourcefile = RSTRING_PTR(fname); 10470 parser->parser_ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1; 10471 10472 return Qnil; 10473 } 10474 10475 extern VALUE rb_thread_pass(void); 10476 10477 struct ripper_args { 10478 struct parser_params *parser; 10479 int argc; 10480 VALUE *argv; 10481 }; 10482 10483 static VALUE 10484 ripper_parse0(VALUE parser_v) 10485 { 10486 struct parser_params *parser; 10487 10488 TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, parser); 10489 parser_prepare(parser); 10490 ripper_yyparse((void*)parser); 10491 return parser->result; 10492 } 10493 10494 static VALUE 10495 ripper_ensure(VALUE parser_v) 10496 { 10497 struct parser_params *parser; 10498 10499 TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, parser); 10500 parser->parsing_thread = Qnil; 10501 return Qnil; 10502 } 10503 10504 /* 10505 * call-seq: 10506 * ripper#parse 10507 * 10508 * Start parsing and returns the value of the root action. 10509 */ 10510 static VALUE 10511 ripper_parse(VALUE self) 10512 { 10513 struct parser_params *parser; 10514 10515 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10516 if (!ripper_initialized_p(parser)) { 10517 rb_raise(rb_eArgError, "method called for uninitialized object"); 10518 } 10519 if (!NIL_P(parser->parsing_thread)) { 10520 if (parser->parsing_thread == rb_thread_current()) 10521 rb_raise(rb_eArgError, "Ripper#parse is not reentrant"); 10522 else 10523 rb_raise(rb_eArgError, "Ripper#parse is not multithread-safe"); 10524 } 10525 parser->parsing_thread = rb_thread_current(); 10526 rb_ensure(ripper_parse0, self, ripper_ensure, self); 10527 10528 return parser->result; 10529 } 10530 10531 /* 10532 * call-seq: 10533 * ripper#column -> Integer 10534 * 10535 * Return column number of current parsing line. 10536 * This number starts from 0. 10537 */ 10538 static VALUE 10539 ripper_column(VALUE self) 10540 { 10541 struct parser_params *parser; 10542 long col; 10543 10544 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10545 if (!ripper_initialized_p(parser)) { 10546 rb_raise(rb_eArgError, "method called for uninitialized object"); 10547 } 10548 if (NIL_P(parser->parsing_thread)) return Qnil; 10549 col = parser->tokp - parser->parser_lex_pbeg; 10550 return LONG2NUM(col); 10551 } 10552 10553 /* 10554 * call-seq: 10555 * ripper#filename -> String 10556 * 10557 * Return current parsing filename. 10558 */ 10559 static VALUE 10560 ripper_filename(VALUE self) 10561 { 10562 struct parser_params *parser; 10563 10564 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10565 if (!ripper_initialized_p(parser)) { 10566 rb_raise(rb_eArgError, "method called for uninitialized object"); 10567 } 10568 return parser->parser_ruby_sourcefile_string; 10569 } 10570 10571 /* 10572 * call-seq: 10573 * ripper#lineno -> Integer 10574 * 10575 * Return line number of current parsing line. 10576 * This number starts from 1. 10577 */ 10578 static VALUE 10579 ripper_lineno(VALUE self) 10580 { 10581 struct parser_params *parser; 10582 10583 TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); 10584 if (!ripper_initialized_p(parser)) { 10585 rb_raise(rb_eArgError, "method called for uninitialized object"); 10586 } 10587 if (NIL_P(parser->parsing_thread)) return Qnil; 10588 return INT2NUM(parser->parser_ruby_sourceline); 10589 } 10590 10591 #ifdef RIPPER_DEBUG 10592 /* :nodoc: */ 10593 static VALUE 10594 ripper_assert_Qundef(VALUE self, VALUE obj, VALUE msg) 10595 { 10596 StringValue(msg); 10597 if (obj == Qundef) { 10598 rb_raise(rb_eArgError, "%s", RSTRING_PTR(msg)); 10599 } 10600 return Qnil; 10601 } 10602 10603 /* :nodoc: */ 10604 static VALUE 10605 ripper_value(VALUE self, VALUE obj) 10606 { 10607 return ULONG2NUM(obj); 10608 } 10609 #endif 10610 10611 void 10612 Init_ripper(void) 10613 { 10614 VALUE Ripper; 10615 10616 Ripper = rb_define_class("Ripper", rb_cObject); 10617 rb_define_const(Ripper, "Version", rb_usascii_str_new2(RIPPER_VERSION)); 10618 rb_define_alloc_func(Ripper, ripper_s_allocate); 10619 rb_define_method(Ripper, "initialize", ripper_initialize, -1); 10620 rb_define_method(Ripper, "parse", ripper_parse, 0); 10621 rb_define_method(Ripper, "column", ripper_column, 0); 10622 rb_define_method(Ripper, "filename", ripper_filename, 0); 10623 rb_define_method(Ripper, "lineno", ripper_lineno, 0); 10624 rb_define_method(Ripper, "end_seen?", rb_parser_end_seen_p, 0); 10625 rb_define_method(Ripper, "encoding", rb_parser_encoding, 0); 10626 rb_define_method(Ripper, "yydebug", rb_parser_get_yydebug, 0); 10627 rb_define_method(Ripper, "yydebug=", rb_parser_set_yydebug, 1); 10628 #ifdef RIPPER_DEBUG 10629 rb_define_method(rb_mKernel, "assert_Qundef", ripper_assert_Qundef, 2); 10630 rb_define_method(rb_mKernel, "rawVALUE", ripper_value, 1); 10631 rb_define_method(rb_mKernel, "validate_object", ripper_validate_object, 1); 10632 #endif 10633 10634 ripper_id_gets = rb_intern("gets"); 10635 ripper_init_eventids1(Ripper); 10636 ripper_init_eventids2(Ripper); 10637 /* ensure existing in symbol table */ 10638 rb_intern("||"); 10639 rb_intern("&&"); 10640 } 10641 #endif /* RIPPER */ 10642
1.7.3