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author | Arnold D. Robbins <arnold@skeeve.com> | 2010-07-02 15:49:42 +0300 |
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committer | Arnold D. Robbins <arnold@skeeve.com> | 2010-07-02 15:49:42 +0300 |
commit | 483a58b779f2bd6c5fff64c9429a766d33e46a41 (patch) | |
tree | 41ee58e21c390c40d90893b277542b309e7d0de7 /awk.tab.c | |
parent | 3711eedc1b995eb1926c9ffb902d5d796cacf8d0 (diff) | |
download | egawk-483a58b779f2bd6c5fff64c9429a766d33e46a41.tar.gz egawk-483a58b779f2bd6c5fff64c9429a766d33e46a41.tar.bz2 egawk-483a58b779f2bd6c5fff64c9429a766d33e46a41.zip |
Now at 2.03.
Diffstat (limited to 'awk.tab.c')
-rw-r--r-- | awk.tab.c | 1696 |
1 files changed, 0 insertions, 1696 deletions
diff --git a/awk.tab.c b/awk.tab.c deleted file mode 100644 index f0f43df4..00000000 --- a/awk.tab.c +++ /dev/null @@ -1,1696 +0,0 @@ - -/* A Bison parser, made from awk.y */ - -#define NAME 258 -#define REGEXP 259 -#define YSTRING 260 -#define ERROR 261 -#define INCDEC 262 -#define NUMBER 263 -#define ASSIGNOP 264 -#define RELOP 265 -#define MATCHOP 266 -#define NEWLINE 267 -#define REDIRECT_OP 268 -#define CONCAT_OP 269 -#define LEX_BEGIN 270 -#define LEX_END 271 -#define LEX_IF 272 -#define LEX_ELSE 273 -#define LEX_WHILE 274 -#define LEX_FOR 275 -#define LEX_BREAK 276 -#define LEX_CONTINUE 277 -#define LEX_PRINT 278 -#define LEX_PRINTF 279 -#define LEX_NEXT 280 -#define LEX_EXIT 281 -#define LEX_IN 282 -#define LEX_AND 283 -#define LEX_OR 284 -#define INCREMENT 285 -#define DECREMENT 286 -#define LEX_BUILTIN 287 -#define UNARY 288 - -#line 27 "awk.y" - -#define YYDEBUG 12 - -#include <stdio.h> -#include "awk.h" - - static int yylex (); - - - /* - * The following variable is used for a very sickening thing. - * The awk language uses white space as the string concatenation - * operator, but having a white space token that would have to appear - * everywhere in all the grammar rules would be unbearable. - * It turns out we can return CONCAT_OP exactly when there really - * is one, just from knowing what kinds of other tokens it can appear - * between (namely, constants, variables, or close parentheses). - * This is because concatenation has the lowest priority of all - * operators. want_concat_token is used to remember that something - * that could be the left side of a concat has just been returned. - * - * If anyone knows a cleaner way to do this (don't look at the Un*x - * code to find one, though), please suggest it. - */ - static int want_concat_token; - - /* Two more horrible kludges. The same comment applies to these two too */ - static int want_regexp; /* lexical scanning kludge */ - static int want_redirect; /* similarly */ - int lineno = 1; /* JF for error msgs */ - -/* During parsing of a gawk program, the pointer to the next character - is in this variable. */ - char *lexptr; /* JF moved it up here */ - char *lexptr_begin; /* JF for error msgs */ - -#line 64 "awk.y" -typedef union { - long lval; - AWKNUM fval; - NODE *nodeval; - NODETYPE nodetypeval; - char *sval; - NODE *(*ptrval)(); -} YYSTYPE; - -#ifndef YYLTYPE -typedef - struct yyltype - { - int timestamp; - int first_line; - int first_column; - int last_line; - int last_column; - char *text; - } - yyltype; - -#define YYLTYPE yyltype -#endif - -#define YYACCEPT return(0) -#define YYABORT return(1) -#define YYERROR return(1) -#include <stdio.h> - -#ifndef __STDC__ -#define const -#endif - - - -#define YYFINAL 200 -#define YYFLAG -32768 -#define YYNTBASE 49 - -#define YYTRANSLATE(x) (yytranslate[x]) - -static const char yytranslate[] = { 0, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 40, 2, 2, 48, 37, 2, 2, 41, - 42, 35, 33, 39, 34, 2, 36, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 45, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 46, 2, 47, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 43, 2, 44, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 1, 2, 3, 4, 5, - 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, - 26, 27, 28, 29, 30, 31, 32, 38 -}; - -static const short yyrline[] = { 0, - 105, 110, 112, 117, 122, 124, 126, 131, 134, 136, - 138, 140, 142, 151, 153, 158, 160, 164, 166, 171, - 173, 178, 180, 182, 186, 189, 193, 196, 197, 198, - 199, 201, 204, 206, 208, 210, 212, 214, 217, 220, - 222, 228, 230, 236, 239, 244, 246, 248, 250, 255, - 259, 265, 267, 271, 276, 282, 284, 288, 291, 293, - 299, 301, 303, 305, 307, 309, 311, 313, 315, 317, - 319, 323, 325, 327, 329, 331, 334, 336, 340, 342, - 344, 346, 348, 350, 352, 354, 356, 358, 360, 364, - 366, 368, 370, 372, 375, 379, 382, 384 -}; - -static const char * yytname[] = { 0, -"error","$illegal.","NAME","REGEXP","YSTRING","ERROR","INCDEC","NUMBER","ASSIGNOP","RELOP", -"MATCHOP","NEWLINE","REDIRECT_OP","CONCAT_OP","LEX_BEGIN","LEX_END","LEX_IF","LEX_ELSE","LEX_WHILE","LEX_FOR", -"LEX_BREAK","LEX_CONTINUE","LEX_PRINT","LEX_PRINTF","LEX_NEXT","LEX_EXIT","LEX_IN","LEX_AND","LEX_OR","INCREMENT", -"DECREMENT","LEX_BUILTIN","'+'","'-'","'*'","'/'","'%'","UNARY","','","'!'", -"'('","')'","'{'","'}'","';'","'['","']'","'$'","start" -}; - -static const short yyr1[] = { 0, - 49, 50, 50, 51, 52, 52, 52, 53, 53, 53, - 53, 53, 53, 54, 53, 55, 53, 53, 53, 56, - 56, 57, 57, 57, 58, 58, 59, 59, 59, 59, - 59, 60, 60, 60, 60, 60, 60, 60, 60, 61, - 60, 62, 60, 63, 60, 60, 60, 60, 60, 64, - 64, 65, 65, 66, 66, 67, 67, 68, 68, 68, - 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, - 69, 69, 69, 69, 69, 69, 69, 69, 70, 70, - 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, - 70, 70, 70, 70, 70, 71, 71, 71 -}; - -static const short yyr2[] = { 0, - 2, 1, 2, 4, 0, 1, 3, 1, 1, 2, - 3, 3, 3, 0, 4, 0, 6, 3, 1, 0, - 4, 0, 1, 2, 2, 2, 0, 1, 1, 2, - 2, 5, 1, 6, 10, 9, 9, 2, 2, 0, - 5, 0, 5, 0, 7, 2, 2, 5, 2, 6, - 9, 0, 2, 0, 2, 0, 1, 0, 1, 3, - 4, 1, 3, 2, 2, 2, 2, 2, 1, 1, - 1, 3, 3, 3, 3, 3, 3, 3, 4, 1, - 3, 2, 2, 2, 2, 2, 1, 1, 1, 3, - 3, 3, 3, 3, 3, 1, 4, 2 -}; - -static const short yydefact[] = { 52, - 5, 96, 71, 70, 53, 8, 9, 0, 0, 62, - 0, 14, 0, 0, 0, 5, 2, 20, 6, 19, - 69, 0, 65, 66, 58, 0, 64, 0, 10, 0, - 19, 89, 88, 0, 0, 80, 0, 0, 98, 87, - 3, 27, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 67, 68, 0, 0, 59, - 0, 0, 13, 63, 83, 84, 58, 82, 0, 0, - 0, 0, 0, 0, 0, 85, 86, 29, 28, 22, - 52, 11, 12, 7, 18, 16, 77, 75, 76, 72, - 73, 74, 78, 97, 0, 61, 15, 0, 81, 95, - 93, 94, 90, 91, 92, 31, 30, 0, 0, 0, - 0, 0, 40, 42, 0, 0, 27, 0, 23, 33, - 0, 4, 0, 60, 79, 0, 0, 56, 52, 52, - 38, 39, 58, 58, 58, 46, 0, 47, 22, 21, - 24, 49, 0, 0, 0, 96, 0, 57, 25, 26, - 54, 0, 54, 0, 0, 17, 27, 27, 0, 0, - 0, 0, 44, 0, 0, 27, 0, 0, 0, 56, - 0, 55, 41, 54, 43, 48, 32, 50, 34, 0, - 0, 56, 0, 27, 27, 27, 0, 45, 0, 0, - 0, 27, 51, 37, 36, 0, 35, 0, 0, 0 -}; - -static const short yydefgoto[] = { 198, - 16, 17, 18, 19, 28, 123, 43, 118, 131, 80, - 119, 133, 135, 174, 120, 1, 162, 147, 59, 121, - 39, 21 -}; - -static const short yypact[] = {-32768, - 262, -29,-32768,-32768,-32768,-32768,-32768, 11, 11, 6, - 313,-32768, 326, 326, 345, 142,-32768, 17, 243, 399, - 31, 313,-32768,-32768, 313, 313,-32768, 61,-32768, 35, - 129,-32768,-32768, 11, 11, 39, 313, 313,-32768, 157, --32768, 99, 81, 326, 326, 326, 313, 64, 313, 313, - 313, 313, 313, 313, 313,-32768,-32768, 72, -20, 254, - 87, 105,-32768,-32768,-32768,-32768, 313,-32768, 369, 313, - 313, 313, 313, 313, 313,-32768,-32768,-32768,-32768, 172, --32768,-32768, 107, 89, 254,-32768, 336, 164, 164,-32768, --32768,-32768, 254,-32768, 313,-32768,-32768, 46,-32768, 336, - 164, 164,-32768,-32768,-32768,-32768,-32768, 111, 114, 115, - -6, -6,-32768, 120, -6, 71, 99, 202,-32768,-32768, - -7, 156, 166, 254,-32768, 326, 326, 360,-32768,-32768, --32768,-32768, 313, 313, 313,-32768, 313,-32768, 172,-32768, --32768,-32768, 143, 109, 125, -5, 140, 254, 156, 156, - 3, 53, 3, 381, 232,-32768, 99, 99, 181, 292, - 313, -6,-32768, -6, -6, 99, 172, 172, 206, 313, - -25, 254,-32768, 198,-32768,-32768, 132, 194,-32768, 174, - 175, 313, -6, 99, 99, 99, 176,-32768, 172, 172, - 172, 99,-32768,-32768,-32768, 172,-32768, 214, 229,-32768 -}; - -static const short yypgoto[] = {-32768, --32768, 215,-32768, -12,-32768,-32768,-32768, 91, -34, -82, - -100,-32768,-32768,-32768,-32768, -73, -95, -159, -36, -1, --32768, 304 -}; - - -#define YYLAST 436 - - -static const short yytable[] = { 20, - 29, 30, 44, 45, 129, 129, 49, 122, 159, 27, - 181, 20, 31, 2, 20, 161, 22, 141, 95, 182, - 58, 96, 187, 60, 61, 50, 51, 52, 53, 54, - 98, 82, 83, 84, 139, 68, 69, 130, 130, 55, - 22, 95, 20, 20, 20, 85, 25, 87, 88, 89, - 90, 91, 92, 93, 141, 149, 150, 164, 15, 42, - 56, 57, 44, 45, 62, 60, 178, 179, 100, 101, - 102, 103, 104, 105, 167, 168, 63, 132, 183, 67, - 136, 138, 129, 177, 95, 49, 142, 125, 193, 194, - 195, 95, 81, 124, 163, 197, 151, 152, 153, 86, - 49, 189, 190, 191, 50, 51, 52, 53, 54, 196, - 78, 137, 79, 144, 145, 130, 44, 45, 94, 50, - 51, 52, 53, 54, 20, 20, 148, 173, 64, 175, - 176, 60, 60, 60, 44, 154, 44, 45, 47, 48, - 97, -1, 49, 106, 2, 107, 3, 171, 188, 4, - 157, 126, 44, 45, 127, 128, 6, 7, 20, 172, - 134, 50, 51, 52, 53, 54, 158, 5, 148, 143, - 64, 8, 9, 10, 2, 11, 3, 12, 156, 4, - 148, 13, 14, 106, 160, 107, 76, 77, 108, 15, - 109, 110, 111, 112, 113, 114, 115, 116, 52, 53, - 54, 8, 9, 10, 2, 11, 3, 169, 180, 4, - 161, 184, 26, 199, 117, 185, 186, 192, 108, 15, - 109, 110, 111, 112, 113, 114, 115, 116, 200, 155, - 41, 8, 9, 10, 2, 11, 3, 0, 0, 4, - 0, 0, 26, 0, 117, 140, 0, 0, 108, 15, - 109, 110, 111, 112, 113, 114, 115, 116, 0, 0, - 0, 8, 9, 10, 2, 11, 3, 49, 0, 4, - 44, 45, 26, 5, 117, 166, 6, 7, 0, 15, - 0, 46, 0, 0, 0, 0, 50, 51, 52, 53, - 54, 8, 9, 10, 2, 11, 3, 12, 0, 4, - 0, 13, 14, 0, 0, 0, 6, 7, 0, 15, - 0, 23, 24, 0, 0, 2, 0, 3, 40, 0, - 4, 8, 9, 10, 0, 11, 0, 12, 2, 0, - 3, 13, 14, 4, 0, 0, 170, 65, 66, 15, - 6, 7, 8, 9, 10, 0, 11, 2, 0, 32, - 0, 0, 33, 26, 0, 8, 9, 10, 0, 11, - 15, 12, 146, 0, 3, 13, 14, 4, 50, 51, - 52, 53, 54, 15, 34, 35, 36, 0, 37, 0, - 0, 0, 49, 0, 0, 38, 0, 0, 0, 8, - 9, 10, 15, 11, 49, 0, 0, 0, 0, 0, - 26, 50, 51, 52, 53, 54, 0, 15, 47, 48, - 99, 0, 49, 50, 51, 52, 53, 54, 0, 0, - 0, 0, 165, 0, 0, 0, 0, 0, 0, 0, - 0, 50, 51, 52, 53, 54 -}; - -static const short yycheck[] = { 1, - 13, 14, 28, 29, 12, 12, 14, 81, 14, 11, - 170, 13, 14, 3, 16, 13, 46, 118, 39, 45, - 22, 42, 182, 25, 26, 33, 34, 35, 36, 37, - 67, 44, 45, 46, 117, 37, 38, 45, 45, 9, - 46, 39, 44, 45, 46, 47, 41, 49, 50, 51, - 52, 53, 54, 55, 155, 129, 130, 153, 48, 43, - 30, 31, 28, 29, 4, 67, 167, 168, 70, 71, - 72, 73, 74, 75, 157, 158, 42, 112, 174, 41, - 115, 116, 12, 166, 39, 14, 121, 42, 189, 190, - 191, 39, 12, 95, 42, 196, 133, 134, 135, 36, - 14, 184, 185, 186, 33, 34, 35, 36, 37, 192, - 12, 41, 14, 126, 127, 45, 28, 29, 47, 33, - 34, 35, 36, 37, 126, 127, 128, 162, 42, 164, - 165, 133, 134, 135, 28, 137, 28, 29, 10, 11, - 36, 0, 14, 12, 3, 14, 5, 160, 183, 8, - 42, 41, 28, 29, 41, 41, 15, 16, 160, 161, - 41, 33, 34, 35, 36, 37, 42, 12, 170, 4, - 42, 30, 31, 32, 3, 34, 5, 36, 36, 8, - 182, 40, 41, 12, 45, 14, 30, 31, 17, 48, - 19, 20, 21, 22, 23, 24, 25, 26, 35, 36, - 37, 30, 31, 32, 3, 34, 5, 27, 3, 8, - 13, 18, 41, 0, 43, 42, 42, 42, 17, 48, - 19, 20, 21, 22, 23, 24, 25, 26, 0, 139, - 16, 30, 31, 32, 3, 34, 5, -1, -1, 8, - -1, -1, 41, -1, 43, 44, -1, -1, 17, 48, - 19, 20, 21, 22, 23, 24, 25, 26, -1, -1, - -1, 30, 31, 32, 3, 34, 5, 14, -1, 8, - 28, 29, 41, 12, 43, 44, 15, 16, -1, 48, - -1, 39, -1, -1, -1, -1, 33, 34, 35, 36, - 37, 30, 31, 32, 3, 34, 5, 36, -1, 8, - -1, 40, 41, -1, -1, -1, 15, 16, -1, 48, - -1, 8, 9, -1, -1, 3, -1, 5, 15, -1, - 8, 30, 31, 32, -1, 34, -1, 36, 3, -1, - 5, 40, 41, 8, -1, -1, 45, 34, 35, 48, - 15, 16, 30, 31, 32, -1, 34, 3, -1, 5, - -1, -1, 8, 41, -1, 30, 31, 32, -1, 34, - 48, 36, 3, -1, 5, 40, 41, 8, 33, 34, - 35, 36, 37, 48, 30, 31, 32, -1, 34, -1, - -1, -1, 14, -1, -1, 41, -1, -1, -1, 30, - 31, 32, 48, 34, 14, -1, -1, -1, -1, -1, - 41, 33, 34, 35, 36, 37, -1, 48, 10, 11, - 42, -1, 14, 33, 34, 35, 36, 37, -1, -1, - -1, -1, 42, -1, -1, -1, -1, -1, -1, -1, - -1, 33, 34, 35, 36, 37 -}; -#define YYPURE 1 - -#line 2 "bison.simple" - -/* Skeleton output parser for bison, - copyright (C) 1984 Bob Corbett and Richard Stallman - - Permission is granted to anyone to make or distribute verbatim copies of this program - provided that the copyright notice and this permission notice are preserved; - and provided that the recipient is not asked to waive or limit his right to - redistribute copies as permitted by this permission notice; - and provided that anyone possessing an executable copy - is granted access to copy the source code, in machine-readable form, - in some reasonable manner. - - Permission is granted to distribute derived works or enhanced versions of - this program under the above conditions with the additional condition - that the entire derivative or enhanced work - must be covered by a permission notice identical to this one. - - Anything distributed as part of a package containing portions derived - from this program, which cannot in current practice perform its function usefully - in the absense of what was derived directly from this program, - is to be considered as forming, together with the latter, - a single work derived from this program, - which must be entirely covered by a permission notice identical to this one - in order for distribution of the package to be permitted. - - In other words, you are welcome to use, share and improve this program. - You are forbidden to forbid anyone else to use, share and improve - what you give them. Help stamp out software-hoarding! */ - -/* This is the parser code that is written into each bison parser - when the %semantic_parser declaration is not specified in the grammar. - It was written by Richard Stallman by simplifying the hairy parser - used when %semantic_parser is specified. */ - -/* Note: there must be only one dollar sign in this file. - It is replaced by the list of actions, each action - as one case of the switch. */ - -#define yyerrok (yyerrstatus = 0) -#define yyclearin (yychar = YYEMPTY) -#define YYEMPTY -2 -#define YYEOF 0 -#define YYFAIL goto yyerrlab; - -#define YYTERROR 1 - -#ifndef YYIMPURE -#define YYLEX yylex() -#endif - -#ifndef YYPURE -#define YYLEX yylex(&yylval, &yylloc) -#endif - -/* If nonreentrant, generate the variables here */ - -#ifndef YYIMPURE - -int yychar; /* the lookahead symbol */ -YYSTYPE yylval; /* the semantic value of the */ - /* lookahead symbol */ - -YYLTYPE yylloc; /* location data for the lookahead */ - /* symbol */ - -int yydebug = 0; /* nonzero means print parse trace */ - -#endif /* YYIMPURE */ - - -/* YYMAXDEPTH indicates the initial size of the parser's stacks */ - -#ifndef YYMAXDEPTH -#define YYMAXDEPTH 200 -#endif - -/* YYMAXLIMIT is the maximum size the stacks can grow to - (effective only if the built-in stack extension method is used). */ - -#ifndef YYMAXLIMIT -#define YYMAXLIMIT 10000 -#endif - - -#line 87 "bison.simple" -int -yyparse() -{ - register int yystate; - register int yyn; - register short *yyssp; - register YYSTYPE *yyvsp; - YYLTYPE *yylsp; - int yyerrstatus; /* number of tokens to shift before error messages enabled */ - int yychar1; /* lookahead token as an internal (translated) token number */ - - short yyssa[YYMAXDEPTH]; /* the state stack */ - YYSTYPE yyvsa[YYMAXDEPTH]; /* the semantic value stack */ - YYLTYPE yylsa[YYMAXDEPTH]; /* the location stack */ - - short *yyss = yyssa; /* refer to the stacks thru separate pointers */ - YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */ - YYLTYPE *yyls = yylsa; - - int yymaxdepth = YYMAXDEPTH; - -#ifndef YYPURE - - int yychar; - YYSTYPE yylval; - YYLTYPE yylloc; - - extern int yydebug; - -#endif - - - YYSTYPE yyval; /* the variable used to return */ - /* semantic values from the action */ - /* routines */ - - int yylen; - - if (yydebug) - fprintf(stderr, "Starting parse\n"); - - yystate = 0; - yyerrstatus = 0; - yychar = YYEMPTY; /* Cause a token to be read. */ - - /* Initialize stack pointers. - Waste one element of value and location stack - so that they stay on the same level as the state stack. */ - - yyssp = yyss - 1; - yyvsp = yyvs; - yylsp = yyls; - -/* Push a new state, which is found in yystate . */ -/* In all cases, when you get here, the value and location stacks - have just been pushed. so pushing a state here evens the stacks. */ -yynewstate: - - *++yyssp = yystate; - - if (yyssp >= yyss + yymaxdepth - 1) - { - /* Give user a chance to reallocate the stack */ - /* Use copies of these so that the &'s don't force the real ones into memory. */ - YYSTYPE *yyvs1 = yyvs; - YYLTYPE *yyls1 = yyls; - short *yyss1 = yyss; - - /* Get the current used size of the three stacks, in elements. */ - int size = yyssp - yyss + 1; - -#ifdef yyoverflow - /* Each stack pointer address is followed by the size of - the data in use in that stack, in bytes. */ - yyoverflow("parser stack overflow", - &yyss1, size * sizeof (*yyssp), - &yyvs1, size * sizeof (*yyvsp), - &yyls1, size * sizeof (*yylsp), - &yymaxdepth); - - yyss = yyss1; yyvs = yyvs1; yyls = yyls1; -#else /* no yyoverflow */ - /* Extend the stack our own way. */ - if (yymaxdepth >= YYMAXLIMIT) - yyerror("parser stack overflow"); - yymaxdepth *= 2; - if (yymaxdepth > YYMAXLIMIT) - yymaxdepth = YYMAXLIMIT; - yyss = (short *) alloca (yymaxdepth * sizeof (*yyssp)); - bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp)); - yyls = (YYLTYPE *) alloca (yymaxdepth * sizeof (*yylsp)); - bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp)); - yyvs = (YYSTYPE *) alloca (yymaxdepth * sizeof (*yyvsp)); - bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp)); -#endif /* no yyoverflow */ - - yyssp = yyss + size - 1; - yylsp = yyls + size - 1; - yyvsp = yyvs + size - 1; - - if (yydebug) - fprintf(stderr, "Stack size increased to %d\n", yymaxdepth); - - if (yyssp >= yyss + yymaxdepth - 1) - YYERROR; - } - - if (yydebug) - fprintf(stderr, "Entering state %d\n", yystate); - -/* Do appropriate processing given the current state. */ -/* Read a lookahead token if we need one and don't already have one. */ -yyresume: - - /* First try to decide what to do without reference to lookahead token. */ - - yyn = yypact[yystate]; - if (yyn == YYFLAG) - goto yydefault; - - /* Not known => get a lookahead token if don't already have one. */ - - /* yychar is either YYEMPTY or YYEOF - or a valid token in external form. */ - - if (yychar == YYEMPTY) - { - yychar = YYLEX; - } - - /* Convert token to internal form (in yychar1) for indexing tables with */ - - if (yychar <= 0) /* This means end of input. */ - { - yychar1 = 0; - yychar = YYEOF; /* Don't call YYLEX any more */ - - if (yydebug) - fprintf(stderr, "Now at end of input.\n"); - } - else - { - yychar1 = YYTRANSLATE(yychar); - - if (yydebug) - fprintf(stderr, "Parsing next token; it is %d (%s)\n", yychar, yytname[yychar1]); - } - - yyn += yychar1; - if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1) - goto yydefault; - - yyn = yytable[yyn]; - - /* yyn is what to do for this token type in this state. - Negative => reduce, -yyn is rule number. - Positive => shift, yyn is new state. - New state is final state => don't bother to shift, - just return success. - 0, or most negative number => error. */ - - if (yyn < 0) - { - if (yyn == YYFLAG) - goto yyerrlab; - yyn = -yyn; - goto yyreduce; - } - else if (yyn == 0) - goto yyerrlab; - - if (yyn == YYFINAL) - YYACCEPT; - - /* Shift the lookahead token. */ - - if (yydebug) - fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]); - - /* Discard the token being shifted unless it is eof. */ - if (yychar != YYEOF) - yychar = YYEMPTY; - - *++yyvsp = yylval; - *++yylsp = yylloc; - - /* count tokens shifted since error; after three, turn off error status. */ - if (yyerrstatus) yyerrstatus--; - - yystate = yyn; - goto yynewstate; - -/* Do the default action for the current state. */ -yydefault: - - yyn = yydefact[yystate]; - if (yyn == 0) - goto yyerrlab; - -/* Do a reduction. yyn is the number of a rule to reduce with. */ -yyreduce: - yylen = yyr2[yyn]; - yyval = yyvsp[1-yylen]; /* implement default value of the action */ - - if (yydebug) - { - if (yylen == 1) - fprintf (stderr, "Reducing 1 value via line %d, ", - yyrline[yyn]); - else - fprintf (stderr, "Reducing %d values via line %d, ", - yylen, yyrline[yyn]); - } - - - switch (yyn) { - -case 1: -#line 106 "awk.y" -{ expression_value = yyvsp[0].nodeval; ; - break;} -case 2: -#line 111 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_rule_list,(NODE *) NULL); ; - break;} -case 3: -#line 114 "awk.y" -{ yyval.nodeval = append_right (yyvsp[-1].nodeval, node(yyvsp[0].nodeval, Node_rule_list,(NODE *) NULL)); ; - break;} -case 4: -#line 118 "awk.y" -{ yyval.nodeval = node (yyvsp[-3].nodeval, Node_rule_node, yyvsp[-2].nodeval); ; - break;} -case 5: -#line 123 "awk.y" -{ yyval.nodeval = NULL; ; - break;} -case 6: -#line 125 "awk.y" -{ yyval.nodeval = yyvsp[0].nodeval; ; - break;} -case 7: -#line 127 "awk.y" -{ yyval.nodeval = mkrangenode ( node(yyvsp[-2].nodeval, Node_cond_pair, yyvsp[0].nodeval) ); ; - break;} -case 8: -#line 133 "awk.y" -{ yyval.nodeval = node ((NODE *)NULL, Node_K_BEGIN,(NODE *) NULL); ; - break;} -case 9: -#line 135 "awk.y" -{ yyval.nodeval = node ((NODE *)NULL, Node_K_END,(NODE *) NULL); ; - break;} -case 10: -#line 137 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_not,(NODE *) NULL); ; - break;} -case 11: -#line 139 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_and, yyvsp[0].nodeval); ; - break;} -case 12: -#line 141 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_or, yyvsp[0].nodeval); ; - break;} -case 13: -#line 143 "awk.y" -{ - yyval.nodeval = yyvsp[-1].nodeval; - want_concat_token = 0; - ; - break;} -case 14: -#line 152 "awk.y" -{ ++want_regexp; ; - break;} -case 15: -#line 154 "awk.y" -{ want_regexp = 0; - yyval.nodeval = node (node (make_number ((AWKNUM)0), Node_field_spec, (NODE *)NULL), - Node_match, (NODE *)make_regexp (yyvsp[-1].sval)); - ; - break;} -case 16: -#line 159 "awk.y" -{ ++want_regexp; ; - break;} -case 17: -#line 161 "awk.y" -{ want_regexp = 0; - yyval.nodeval = node (yyvsp[-5].nodeval, yyvsp[-4].nodetypeval, (NODE *)make_regexp(yyvsp[-1].sval)); - ; - break;} -case 18: -#line 165 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, yyvsp[-1].nodetypeval, yyvsp[0].nodeval); ; - break;} -case 19: -#line 167 "awk.y" -{ yyval.nodeval = yyvsp[0].nodeval; ; - break;} -case 20: -#line 172 "awk.y" -{ yyval.nodeval = NULL; ; - break;} -case 21: -#line 174 "awk.y" -{ yyval.nodeval = yyvsp[-1].nodeval; ; - break;} -case 22: -#line 179 "awk.y" -{ yyval.nodeval = NULL; ; - break;} -case 23: -#line 181 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_statement_list, (NODE *)NULL); ; - break;} -case 24: -#line 183 "awk.y" -{ yyval.nodeval = append_right(yyvsp[-1].nodeval, node( yyvsp[0].nodeval, Node_statement_list, (NODE *)NULL)); ; - break;} -case 25: -#line 188 "awk.y" -{ yyval.nodetypeval = Node_illegal; ; - break;} -case 26: -#line 190 "awk.y" -{ yyval.nodetypeval = Node_illegal; ; - break;} -case 27: -#line 195 "awk.y" -{ yyval.nodetypeval = Node_illegal; ; - break;} -case 32: -#line 203 "awk.y" -{ yyval.nodeval = yyvsp[-2].nodeval; ; - break;} -case 33: -#line 205 "awk.y" -{ yyval.nodeval = yyvsp[0].nodeval; ; - break;} -case 34: -#line 207 "awk.y" -{ yyval.nodeval = node (yyvsp[-3].nodeval, Node_K_while, yyvsp[0].nodeval); ; - break;} -case 35: -#line 209 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_K_for, (NODE *)make_for_loop (yyvsp[-7].nodeval, yyvsp[-5].nodeval, yyvsp[-3].nodeval)); ; - break;} -case 36: -#line 211 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_K_for, (NODE *)make_for_loop (yyvsp[-6].nodeval, (NODE *)NULL, yyvsp[-3].nodeval)); ; - break;} -case 37: -#line 213 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_K_arrayfor, (NODE *)make_for_loop(variable(yyvsp[-6].sval), (NODE *)NULL, variable(yyvsp[-3].sval))); ; - break;} -case 38: -#line 216 "awk.y" -{ yyval.nodeval = node ((NODE *)NULL, Node_K_break, (NODE *)NULL); ; - break;} -case 39: -#line 219 "awk.y" -{ yyval.nodeval = node ((NODE *)NULL, Node_K_continue, (NODE *)NULL); ; - break;} -case 40: -#line 221 "awk.y" -{ ++want_redirect; ; - break;} -case 41: -#line 223 "awk.y" -{ - want_redirect = 0; - /* $4->lnode = NULL; */ - yyval.nodeval = node (yyvsp[-2].nodeval, Node_K_print, yyvsp[-1].nodeval); - ; - break;} -case 42: -#line 229 "awk.y" -{ ++want_redirect; ; - break;} -case 43: -#line 231 "awk.y" -{ - want_redirect = 0; - /* $4->lnode = NULL; */ - yyval.nodeval = node (yyvsp[-2].nodeval, Node_K_printf, yyvsp[-1].nodeval); - ; - break;} -case 44: -#line 237 "awk.y" -{ ++want_redirect; - want_concat_token = 0; ; - break;} -case 45: -#line 240 "awk.y" -{ - want_redirect = 0; - yyval.nodeval = node (yyvsp[-4].nodeval, Node_K_printf, yyvsp[-1].nodeval); - ; - break;} -case 46: -#line 245 "awk.y" -{ yyval.nodeval = node ((NODE *)NULL, Node_K_next, (NODE *)NULL); ; - break;} -case 47: -#line 247 "awk.y" -{ yyval.nodeval = node ((NODE *)NULL, Node_K_exit, (NODE *)NULL); ; - break;} -case 48: -#line 249 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_K_exit, (NODE *)NULL); ; - break;} -case 49: -#line 251 "awk.y" -{ yyval.nodeval = yyvsp[-1].nodeval; ; - break;} -case 50: -#line 257 "awk.y" -{ yyval.nodeval = node (yyvsp[-3].nodeval, Node_K_if, - node (yyvsp[0].nodeval, Node_if_branches, (NODE *)NULL)); ; - break;} -case 51: -#line 261 "awk.y" -{ yyval.nodeval = node (yyvsp[-6].nodeval, Node_K_if, - node (yyvsp[-3].nodeval, Node_if_branches, yyvsp[0].nodeval)); ; - break;} -case 53: -#line 268 "awk.y" -{ yyval.nodetypeval = Node_illegal; ; - break;} -case 54: -#line 273 "awk.y" -{ yyval.nodeval = NULL; /* node (NULL, Node_redirect_nil, NULL); */ ; - break;} -case 55: -#line 277 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, yyvsp[-1].nodetypeval, (NODE *)NULL); ; - break;} -case 56: -#line 283 "awk.y" -{ yyval.nodeval = NULL; /* node(NULL, Node_builtin, NULL); */ ; - break;} -case 57: -#line 285 "awk.y" -{ yyval.nodeval = yyvsp[0].nodeval; ; - break;} -case 58: -#line 290 "awk.y" -{ yyval.nodeval = NULL; ; - break;} -case 59: -#line 292 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_expression_list, (NODE *)NULL); ; - break;} -case 60: -#line 294 "awk.y" -{ yyval.nodeval = append_right(yyvsp[-2].nodeval, node( yyvsp[0].nodeval, Node_expression_list, (NODE *)NULL)); ; - break;} -case 61: -#line 300 "awk.y" -{ yyval.nodeval = snode (yyvsp[-1].nodeval, Node_builtin, yyvsp[-3].ptrval); ; - break;} -case 62: -#line 302 "awk.y" -{ yyval.nodeval = snode ((NODE *)NULL, Node_builtin, yyvsp[0].ptrval); ; - break;} -case 63: -#line 304 "awk.y" -{ yyval.nodeval = yyvsp[-1].nodeval; ; - break;} -case 64: -#line 306 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_unary_minus, (NODE *)NULL); ; - break;} -case 65: -#line 308 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_preincrement, (NODE *)NULL); ; - break;} -case 66: -#line 310 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_predecrement, (NODE *)NULL); ; - break;} -case 67: -#line 312 "awk.y" -{ yyval.nodeval = node (yyvsp[-1].nodeval, Node_postincrement, (NODE *)NULL); ; - break;} -case 68: -#line 314 "awk.y" -{ yyval.nodeval = node (yyvsp[-1].nodeval, Node_postdecrement, (NODE *)NULL); ; - break;} -case 69: -#line 316 "awk.y" -{ yyval.nodeval = yyvsp[0].nodeval; ; - break;} -case 70: -#line 318 "awk.y" -{ yyval.nodeval = make_number (yyvsp[0].fval); ; - break;} -case 71: -#line 320 "awk.y" -{ yyval.nodeval = make_string (yyvsp[0].sval, -1); ; - break;} -case 72: -#line 324 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_times, yyvsp[0].nodeval); ; - break;} -case 73: -#line 326 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_quotient, yyvsp[0].nodeval); ; - break;} -case 74: -#line 328 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_mod, yyvsp[0].nodeval); ; - break;} -case 75: -#line 330 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_plus, yyvsp[0].nodeval); ; - break;} -case 76: -#line 332 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_minus, yyvsp[0].nodeval); ; - break;} -case 77: -#line 335 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_concat, yyvsp[0].nodeval); ; - break;} -case 78: -#line 337 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, yyvsp[-1].nodetypeval, yyvsp[0].nodeval); ; - break;} -case 79: -#line 341 "awk.y" -{ yyval.nodeval = snode (yyvsp[-1].nodeval, Node_builtin, yyvsp[-3].ptrval); ; - break;} -case 80: -#line 343 "awk.y" -{ yyval.nodeval = snode ((NODE *)NULL, Node_builtin, yyvsp[0].ptrval); ; - break;} -case 81: -#line 345 "awk.y" -{ yyval.nodeval = yyvsp[-1].nodeval; ; - break;} -case 82: -#line 347 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_unary_minus, (NODE *)NULL); ; - break;} -case 83: -#line 349 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_preincrement, (NODE *)NULL); ; - break;} -case 84: -#line 351 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_predecrement, (NODE *)NULL); ; - break;} -case 85: -#line 353 "awk.y" -{ yyval.nodeval = node (yyvsp[-1].nodeval, Node_postincrement, (NODE *)NULL); ; - break;} -case 86: -#line 355 "awk.y" -{ yyval.nodeval = node (yyvsp[-1].nodeval, Node_postdecrement, (NODE *)NULL); ; - break;} -case 87: -#line 357 "awk.y" -{ yyval.nodeval = yyvsp[0].nodeval; ; - break;} -case 88: -#line 359 "awk.y" -{ yyval.nodeval = make_number (yyvsp[0].fval); ; - break;} -case 89: -#line 361 "awk.y" -{ yyval.nodeval = make_string (yyvsp[0].sval, -1); ; - break;} -case 90: -#line 365 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_times, yyvsp[0].nodeval); ; - break;} -case 91: -#line 367 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_quotient, yyvsp[0].nodeval); ; - break;} -case 92: -#line 369 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_mod, yyvsp[0].nodeval); ; - break;} -case 93: -#line 371 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_plus, yyvsp[0].nodeval); ; - break;} -case 94: -#line 373 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_minus, yyvsp[0].nodeval); ; - break;} -case 95: -#line 376 "awk.y" -{ yyval.nodeval = node (yyvsp[-2].nodeval, Node_concat, yyvsp[0].nodeval); ; - break;} -case 96: -#line 381 "awk.y" -{ yyval.nodeval = variable (yyvsp[0].sval); ; - break;} -case 97: -#line 383 "awk.y" -{ yyval.nodeval = node (variable(yyvsp[-3].sval), Node_subscript, yyvsp[-1].nodeval); ; - break;} -case 98: -#line 385 "awk.y" -{ yyval.nodeval = node (yyvsp[0].nodeval, Node_field_spec, (NODE *)NULL); ; - break;} -} - /* the action file gets copied in in place of this dollarsign */ -#line 303 "bison.simple" - - yyvsp -= yylen; - yylsp -= yylen; - yyssp -= yylen; - - if (yydebug) - { - short *ssp1 = yyss - 1; - fprintf (stderr, "state stack now", yyssp-yyss); - while (ssp1 != yyssp) - fprintf (stderr, " %d", *++ssp1); - fprintf (stderr, "\n"); - } - - *++yyvsp = yyval; - - yylsp++; - if (yylen == 0) - { - yylsp->first_line = yylloc.first_line; - yylsp->first_column = yylloc.first_column; - yylsp->last_line = (yylsp-1)->last_line; - yylsp->last_column = (yylsp-1)->last_column; - yylsp->text = 0; - } - else - { - yylsp->last_line = (yylsp+yylen-1)->last_line; - yylsp->last_column = (yylsp+yylen-1)->last_column; - } - - /* Now "shift" the result of the reduction. - Determine what state that goes to, - based on the state we popped back to - and the rule number reduced by. */ - - yyn = yyr1[yyn]; - - yystate = yypgoto[yyn - YYNTBASE] + *yyssp; - if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp) - yystate = yytable[yystate]; - else - yystate = yydefgoto[yyn - YYNTBASE]; - - goto yynewstate; - -yyerrlab: /* here on detecting error */ - - if (! yyerrstatus) - /* If not already recovering from an error, report this error. */ - { - yyerror("parse error"); - } - - if (yyerrstatus == 3) - { - /* if just tried and failed to reuse lookahead token after an error, discard it. */ - - /* return failure if at end of input */ - if (yychar == YYEOF) - YYERROR; - - if (yydebug) - fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]); - - yychar = YYEMPTY; - } - - /* Else will try to reuse lookahead token - after shifting the error token. */ - - yyerrstatus = 3; /* Each real token shifted decrements this */ - - goto yyerrhandle; - -yyerrdefault: /* current state does not do anything special for the error token. */ - -#if 0 - /* This is wrong; only states that explicitly want error tokens - should shift them. */ - yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/ - if (yyn) goto yydefault; -#endif - -yyerrpop: /* pop the current state because it cannot handle the error token */ - - if (yyssp == yyss) YYERROR; - yyvsp--; - yylsp--; - yystate = *--yyssp; - - if (yydebug) - { - short *ssp1 = yyss - 1; - fprintf (stderr, "Error: state stack now", yyssp-yyss); - while (ssp1 != yyssp) - fprintf (stderr, " %d", *++ssp1); - fprintf (stderr, "\n"); - } - -yyerrhandle: - - yyn = yypact[yystate]; - if (yyn == YYFLAG) - goto yyerrdefault; - - yyn += YYTERROR; - if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR) - goto yyerrdefault; - - yyn = yytable[yyn]; - if (yyn < 0) - { - if (yyn == YYFLAG) - goto yyerrpop; - yyn = -yyn; - goto yyreduce; - } - else if (yyn == 0) - goto yyerrpop; - - if (yyn == YYFINAL) - YYACCEPT; - - if (yydebug) - fprintf(stderr, "Shifting error token, "); - - *++yyvsp = yylval; - *++yylsp = yylloc; - - yystate = yyn; - goto yynewstate; -} -#line 388 "awk.y" - - - -struct token { - char *operator; - NODETYPE value; - int class; - NODE *(*ptr)(); -}; - -#define NULL 0 - -NODE *do_exp(), *do_getline(), *do_index(), *do_length(), - *do_sqrt(), *do_log(), *do_sprintf(), *do_substr(), - *do_split(), *do_int(); - - /* Special functions for debugging */ -#ifndef FAST -NODE *do_prvars(), *do_bp(); -#endif - -/* Tokentab is sorted ascii ascending order, so it can be binary searched. */ -/* (later. Right now its just sort of linear search (SLOW!!) */ - -static struct token tokentab[] = { - {"BEGIN", Node_illegal, LEX_BEGIN, 0}, - {"END", Node_illegal, LEX_END, 0}, -#ifndef FAST - {"bp", Node_builtin, LEX_BUILTIN, do_bp}, -#endif - {"break", Node_K_break, LEX_BREAK, 0}, - {"continue", Node_K_continue, LEX_CONTINUE, 0}, - {"else", Node_illegal, LEX_ELSE, 0}, - {"exit", Node_K_exit, LEX_EXIT, 0}, - {"exp", Node_builtin, LEX_BUILTIN, do_exp}, - {"for", Node_K_for, LEX_FOR, 0}, - {"getline", Node_builtin, LEX_BUILTIN, do_getline}, - {"if", Node_K_if, LEX_IF, 0}, - {"in", Node_illegal, LEX_IN, 0}, - {"index", Node_builtin, LEX_BUILTIN, do_index}, - {"int", Node_builtin, LEX_BUILTIN, do_int}, - {"length", Node_builtin, LEX_BUILTIN, do_length}, - {"log", Node_builtin, LEX_BUILTIN, do_log}, - {"next", Node_K_next, LEX_NEXT, 0}, - {"print", Node_K_print, LEX_PRINT, 0}, - {"printf", Node_K_printf, LEX_PRINTF, 0}, -#ifndef FAST - {"prvars", Node_builtin, LEX_BUILTIN, do_prvars}, -#endif - {"split", Node_builtin, LEX_BUILTIN, do_split}, - {"sprintf", Node_builtin, LEX_BUILTIN, do_sprintf}, - {"sqrt", Node_builtin, LEX_BUILTIN, do_sqrt}, - {"substr", Node_builtin, LEX_BUILTIN, do_substr}, - {"while", Node_K_while, LEX_WHILE, 0}, - {NULL, Node_illegal, ERROR, 0} -}; - -/* Read one token, getting characters through lexptr. */ - -static int -yylex () -{ - register int c; - register int namelen; - register char *tokstart; - register struct token *toktab; - double atof(); /* JF know what happens if you forget this? */ - - - static did_newline = 0; /* JF the grammar insists that actions end - with newlines. This was easier than hacking - the grammar. */ - int do_concat; - - int seen_e = 0; /* These are for numbers */ - int seen_point = 0; - - retry: - - if(!lexptr) - return 0; - - if (want_regexp) { - want_regexp = 0; - /* there is a potential bug if a regexp is followed by an equal sign: - "/foo/=bar" would result in assign_quotient being returned as the - next token. Nothing is done about it since it is not valid awk, - but maybe something should be done anyway. */ - - tokstart = lexptr; - while (c = *lexptr++) { - switch (c) { - case '\\': - if (*lexptr++ == '\0') { - yyerror ("unterminated regexp ends with \\"); - return ERROR; - } - break; - case '/': /* end of the regexp */ - lexptr--; - yylval.sval = tokstart; - return REGEXP; - case '\n': - case '\0': - yyerror ("unterminated regexp"); - return ERROR; - } - } - } - do_concat=want_concat_token; - want_concat_token=0; - - if(*lexptr=='\0') { - lexptr=0; - return NEWLINE; - } - - /* if lexptr is at white space between two terminal tokens or parens, - it is a concatenation operator. */ - if(do_concat && (*lexptr==' ' || *lexptr=='\t')) { - while (*lexptr == ' ' || *lexptr == '\t') - lexptr++; - if (isalnum(*lexptr) || *lexptr == '\"' || *lexptr == '(' - || *lexptr == '.' || *lexptr == '$') /* the '.' is for decimal pt */ - return CONCAT_OP; - } - - while (*lexptr == ' ' || *lexptr == '\t') - lexptr++; - - tokstart = lexptr; /* JF */ - - switch (c = *lexptr++) { - case 0: - return 0; - - case '\n': - lineno++; - return NEWLINE; - - case '#': /* it's a comment */ - while (*lexptr != '\n' && *lexptr != '\0') - lexptr++; - goto retry; - - case '\\': - if(*lexptr=='\n') { - lexptr++; - goto retry; - } else break; - case ')': - case ']': - ++want_concat_token; - /* fall through */ - case '(': /* JF these were above, but I don't see why they should turn on concat. . . &*/ - case '[': - - case '{': - case ',': /* JF */ - case '$': - case ';': - /* set node type to ILLEGAL because the action should set it to - the right thing */ - yylval.nodetypeval = Node_illegal; - return c; - - case '*': - if(*lexptr=='=') { - yylval.nodetypeval=Node_assign_times; - lexptr++; - return ASSIGNOP; - } - yylval.nodetypeval=Node_illegal; - return c; - - case '/': - if(*lexptr=='=') { - yylval.nodetypeval=Node_assign_quotient; - lexptr++; - return ASSIGNOP; - } - yylval.nodetypeval=Node_illegal; - return c; - - case '%': - if(*lexptr=='=') { - yylval.nodetypeval=Node_assign_mod; - lexptr++; - return ASSIGNOP; - } - yylval.nodetypeval=Node_illegal; - return c; - - case '+': - if(*lexptr=='=') { - yylval.nodetypeval=Node_assign_plus; - lexptr++; - return ASSIGNOP; - } - if(*lexptr=='+') { - yylval.nodetypeval=Node_illegal; - lexptr++; - return INCREMENT; - } - yylval.nodetypeval=Node_illegal; - return c; - - case '!': - if(*lexptr=='=') { - yylval.nodetypeval=Node_notequal; - lexptr++; - return RELOP; - } - if(*lexptr=='~') { - yylval.nodetypeval=Node_nomatch; - lexptr++; - return MATCHOP; - } - yylval.nodetypeval=Node_illegal; - return c; - - case '<': - if(*lexptr=='=') { - yylval.nodetypeval=Node_leq; - lexptr++; - return RELOP; - } - yylval.nodetypeval=Node_less; - return RELOP; - - case '=': - if(*lexptr=='=') { - yylval.nodetypeval=Node_equal; - lexptr++; - return RELOP; - } - yylval.nodetypeval=Node_assign; - return ASSIGNOP; - - case '>': - if(want_redirect) { - if (*lexptr == '>') { - yylval.nodetypeval = Node_redirect_append; - lexptr++; - } else - yylval.nodetypeval = Node_redirect_output; - return REDIRECT_OP; - } - if(*lexptr=='=') { - yylval.nodetypeval=Node_geq; - lexptr++; - return RELOP; - } - yylval.nodetypeval=Node_greater; - return RELOP; - - case '~': - yylval.nodetypeval=Node_match; - return MATCHOP; - - case '}': /* JF added did newline stuff. Easier than hacking the grammar */ - if(did_newline) { - did_newline=0; - return c; - } - did_newline++; - --lexptr; - return NEWLINE; - - case '"': - while (*lexptr != '\0') { - switch (*lexptr++) { - case '\\': - if (*lexptr++ != '\0') - break; - /* fall through */ - case '\n': - yyerror ("unterminated string"); - return ERROR; - case '\"': - yylval.sval = tokstart + 1; /* JF Skip the doublequote */ - ++want_concat_token; - return YSTRING; - } - } - return ERROR; /* JF this was one level up, wrong? */ - - case '-': - if(*lexptr=='=') { - yylval.nodetypeval=Node_assign_minus; - lexptr++; - return ASSIGNOP; - } - if(*lexptr=='-') { - yylval.nodetypeval=Node_illegal; - lexptr++; - return DECREMENT; - } - /* JF I think space tab comma and newline are the legal places for - a UMINUS. Have I missed any? */ - if((!isdigit(*lexptr) && *lexptr!='.') || (lexptr>lexptr_begin+1 && - !index(" \t,\n",lexptr[-2]))) { - /* set node type to ILLEGAL because the action should set it to - the right thing */ - yylval.nodetypeval = Node_illegal; - return c; - } - /* FALL through into number code */ - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - case '.': - /* It's a number */ - if(c=='-') namelen=1; - else namelen=0; - for (; (c = tokstart[namelen]) != '\0'; namelen++) { - switch (c) { - case '.': - if (seen_point) - goto got_number; - ++seen_point; - break; - case 'e': - case 'E': - if (seen_e) - goto got_number; - ++seen_e; - if (tokstart[namelen+1] == '-' || tokstart[namelen+1] == '+') - namelen++; - break; - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - break; - default: - goto got_number; - } - } - -got_number: - lexptr = tokstart + namelen; - yylval.fval = atof(tokstart); - ++want_concat_token; - return NUMBER; - - case '&': - if(*lexptr=='&') { - yylval.nodetypeval=Node_and; - lexptr++; - return LEX_AND; - } - return ERROR; - - case '|': - if(want_redirect) { - lexptr++; - yylval.nodetypeval = Node_redirect_pipe; - return REDIRECT_OP; - } - if(*lexptr=='|') { - yylval.nodetypeval=Node_or; - lexptr++; - return LEX_OR; - } - return ERROR; - } - - if (!isalpha(c)) { - yyerror ("Invalid char '%c' in expression\n", c); - return ERROR; - } - - /* its some type of name-type-thing. Find its length */ - for (namelen = 0; is_identchar(tokstart[namelen]); namelen++) - ; - - - /* See if it is a special token. */ - for (toktab = tokentab; toktab->operator != NULL; toktab++) { - if(*tokstart==toktab->operator[0] && - !strncmp(tokstart,toktab->operator,namelen) && - toktab->operator[namelen]=='\0') { - lexptr=tokstart+namelen; - if(toktab->class == LEX_BUILTIN) - yylval.ptrval = toktab->ptr; - else - yylval.nodetypeval = toktab->value; - return toktab->class; - } - } - - /* It's a name. See how long it is. */ - yylval.sval = tokstart; - lexptr = tokstart+namelen; - ++want_concat_token; - return NAME; -} - -/*VARARGS1*/ -yyerror (mesg,a1,a2,a3,a4,a5,a6,a7,a8) - char *mesg; -{ - register char *ptr,*beg; - - /* Find the current line in the input file */ - if(!lexptr) { - beg="(END OF FILE)"; - ptr=beg+13; - } else { - if (*lexptr == '\n' && lexptr!=lexptr_begin) - --lexptr; - for (beg = lexptr;beg!=lexptr_begin && *beg != '\n';--beg) - ; - for (ptr = lexptr;*ptr && *ptr != '\n';ptr++) /*jfw: NL isn't guaranteed*/ - ; - if(beg!=lexptr_begin) - beg++; - } - fprintf (stderr, "Error near line %d, '%.*s'\n",lineno, ptr-beg, beg); - /* figure out line number, etc. later */ - fprintf (stderr, mesg, a1, a2, a3, a4, a5, a6, a7, a8); - fprintf (stderr,"\n"); - exit (1); -} - -/* Parse a C escape sequence. STRING_PTR points to a variable - containing a pointer to the string to parse. That pointer - is updated past the characters we use. The value of the - escape sequence is returned. - - A negative value means the sequence \ newline was seen, - which is supposed to be equivalent to nothing at all. - - If \ is followed by a null character, we return a negative - value and leave the string pointer pointing at the null character. - - If \ is followed by 000, we return 0 and leave the string pointer - after the zeros. A value of 0 does not mean end of string. */ - -static int -parse_escape (string_ptr) - char **string_ptr; -{ - register int c = *(*string_ptr)++; - switch (c) - { - case 'a': - return '\a'; - case 'b': - return '\b'; - case 'e': - return 033; - case 'f': - return '\f'; - case 'n': - return '\n'; - case 'r': - return '\r'; - case 't': - return '\t'; - case 'v': - return '\v'; - case '\n': - return -2; - case 0: - (*string_ptr)--; - return 0; - case '^': - c = *(*string_ptr)++; - if (c == '\\') - c = parse_escape (string_ptr); - if (c == '?') - return 0177; - return (c & 0200) | (c & 037); - - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - { - register int i = c - '0'; - register int count = 0; - while (++count < 3) - { - if ((c = *(*string_ptr)++) >= '0' && c <= '7') - { - i *= 8; - i += c - '0'; - } - else - { - (*string_ptr)--; - break; - } - } - return i; - } - default: - return c; - } -} |