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Diffstat (limited to 'Master/tlpkg/tlperl/lib/CORE/parser.h')
| -rwxr-xr-x | Master/tlpkg/tlperl/lib/CORE/parser.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/CORE/parser.h b/Master/tlpkg/tlperl/lib/CORE/parser.h new file mode 100755 index 00000000000..74d8ef2197b --- /dev/null +++ b/Master/tlpkg/tlperl/lib/CORE/parser.h @@ -0,0 +1,118 @@ +/* parser.h + * + * Copyright (c) 2006, 2007, Larry Wall and others + * + * You may distribute under the terms of either the GNU General Public + * License or the Artistic License, as specified in the README file. + * + * This file defines the layout of the parser object used by the parser + * and lexer (perly.c, toke,c). + */ + +#define YYEMPTY (-2) + +typedef struct { + YYSTYPE val; /* semantic value */ + short state; + I32 savestack_ix; /* size of savestack at this state */ + AV *comppad; /* value of PL_comppad when this value was created */ +#ifdef DEBUGGING + const char *name; /* token/rule name for -Dpv */ +#endif +} yy_stack_frame; + +typedef struct yy_parser { + + /* parser state */ + + struct yy_parser *old_parser; /* previous value of PL_parser */ + YYSTYPE yylval; /* value of lookahead symbol, set by yylex() */ + int yychar; /* The lookahead symbol. */ + + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + + int stack_size; + int yylen; /* length of active reduction */ + yy_stack_frame *stack; /* base of stack */ + yy_stack_frame *ps; /* current stack frame */ + + /* lexer state */ + + I32 lex_brackets; /* bracket count */ + I32 lex_casemods; /* casemod count */ + char *lex_brackstack;/* what kind of brackets to pop */ + char *lex_casestack; /* what kind of case mods in effect */ + U8 lex_defer; /* state after determined token */ + bool lex_dojoin; /* doing an array interpolation */ + U8 lex_expect; /* expect after determined token */ + U8 expect; /* how to interpret ambiguous tokens */ + I32 lex_formbrack; /* bracket count at outer format level */ + OP *lex_inpat; /* in pattern $) and $| are special */ + OP *lex_op; /* extra info to pass back on op */ + SV *lex_repl; /* runtime replacement from s/// */ + U16 lex_inwhat; /* what kind of quoting are we in */ + OPCODE last_lop_op; /* last list operator */ + I32 lex_starts; /* how many interps done on level */ + SV *lex_stuff; /* runtime pattern from m// or s/// */ + I32 multi_start; /* 1st line of multi-line string */ + I32 multi_end; /* last line of multi-line string */ + char multi_open; /* delimiter of said string */ + char multi_close; /* delimiter of said string */ + char pending_ident; /* pending identifier lookup */ + bool preambled; + /* XXX I32 space */ + SUBLEXINFO sublex_info; + SV *linestr; /* current chunk of src text */ + char *bufptr; + char *oldbufptr; + char *oldoldbufptr; + char *bufend; + char *linestart; /* beginning of most recently read line */ + char *last_uni; /* position of last named-unary op */ + char *last_lop; /* position of last list operator */ + line_t copline; /* current line number */ + U16 in_my; /* we're compiling a "my"/"our" declaration */ + U8 lex_state; /* next token is determined */ + U8 error_count; /* how many compile errors so far, max 10 */ + HV *in_my_stash; /* declared class of this "my" declaration */ + PerlIO *rsfp; /* current source file pointer */ + AV *rsfp_filters; /* holds chain of active source filters */ + +#ifdef PERL_MAD + SV *endwhite; + I32 faketokens; + I32 lasttoke; + SV *nextwhite; + I32 realtokenstart; + SV *skipwhite; + SV *thisclose; + MADPROP * thismad; + SV *thisopen; + SV *thisstuff; + SV *thistoken; + SV *thiswhite; + +/* What we know when we're in LEX_KNOWNEXT state. */ + NEXTTOKE nexttoke[5]; /* value of next token, if any */ + I32 curforce; +#else + YYSTYPE nextval[5]; /* value of next token, if any */ + I32 nexttype[5]; /* type of next token */ + I32 nexttoke; +#endif + + COP *saved_curcop; /* the previous PL_curcop */ + char tokenbuf[256]; + +} yy_parser; + +/* + * Local variables: + * c-indentation-style: bsd + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * + * ex: set ts=8 sts=4 sw=4 noet: + */ |