673 lines
17 KiB
C
673 lines
17 KiB
C
/* $NetBSD: calc2.tab.c,v 1.1.1.3 2011/09/10 21:22:08 christos Exp $ */
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#ifndef lint
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static const char yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93";
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#endif
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#define YYBYACC 1
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#define YYMAJOR 1
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#define YYMINOR 9
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#define YYEMPTY (-1)
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#define yyclearin (yychar = YYEMPTY)
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#define yyerrok (yyerrflag = 0)
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#define YYRECOVERING() (yyerrflag != 0)
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#ifndef yyparse
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#define yyparse calc2_parse
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#endif /* yyparse */
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#ifndef yylex
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#define yylex calc2_lex
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#endif /* yylex */
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#ifndef yyerror
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#define yyerror calc2_error
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#endif /* yyerror */
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#ifndef yychar
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#define yychar calc2_char
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#endif /* yychar */
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#ifndef yyval
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#define yyval calc2_val
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#endif /* yyval */
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#ifndef yylval
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#define yylval calc2_lval
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#endif /* yylval */
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#ifndef yydebug
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#define yydebug calc2_debug
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#endif /* yydebug */
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#ifndef yynerrs
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#define yynerrs calc2_nerrs
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#endif /* yynerrs */
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#ifndef yyerrflag
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#define yyerrflag calc2_errflag
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#endif /* yyerrflag */
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#ifndef yylhs
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#define yylhs calc2_lhs
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#endif /* yylhs */
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#ifndef yylen
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#define yylen calc2_len
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#endif /* yylen */
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#ifndef yydefred
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#define yydefred calc2_defred
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#endif /* yydefred */
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#ifndef yydgoto
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#define yydgoto calc2_dgoto
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#endif /* yydgoto */
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#ifndef yysindex
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#define yysindex calc2_sindex
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#endif /* yysindex */
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#ifndef yyrindex
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#define yyrindex calc2_rindex
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#endif /* yyrindex */
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#ifndef yygindex
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#define yygindex calc2_gindex
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#endif /* yygindex */
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#ifndef yytable
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#define yytable calc2_table
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#endif /* yytable */
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#ifndef yycheck
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#define yycheck calc2_check
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#endif /* yycheck */
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#ifndef yyname
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#define yyname calc2_name
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#endif /* yyname */
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#ifndef yyrule
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#define yyrule calc2_rule
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#endif /* yyrule */
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#define YYPREFIX "calc2_"
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#define YYPURE 0
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#line 7 "calc2.y"
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# include <stdio.h>
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# include <ctype.h>
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#line 103 "calc2.tab.c"
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#ifndef YYSTYPE
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typedef int YYSTYPE;
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#endif
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/* compatibility with bison */
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#ifdef YYPARSE_PARAM
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/* compatibility with FreeBSD */
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# ifdef YYPARSE_PARAM_TYPE
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# define YYPARSE_DECL() yyparse(YYPARSE_PARAM_TYPE YYPARSE_PARAM)
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# else
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# define YYPARSE_DECL() yyparse(void *YYPARSE_PARAM)
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# endif
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#else
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# define YYPARSE_DECL() yyparse(int regs[26], int * base)
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#endif
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/* Parameters sent to lex. */
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#ifdef YYLEX_PARAM
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# define YYLEX_DECL() yylex(void *YYLEX_PARAM)
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# define YYLEX yylex(YYLEX_PARAM)
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#else
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# define YYLEX_DECL() yylex(int * base)
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# define YYLEX yylex(base)
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#endif
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/* Parameters sent to yyerror. */
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#define YYERROR_DECL() yyerror(int regs[26], int * base, const char *s)
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#define YYERROR_CALL(msg) yyerror(regs, base, msg)
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extern int YYPARSE_DECL();
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#define DIGIT 257
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#define LETTER 258
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#define UMINUS 259
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#define YYERRCODE 256
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static const short calc2_lhs[] = { -1,
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0, 0, 0, 1, 1, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 3, 3,
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};
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static const short calc2_len[] = { 2,
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0, 3, 3, 1, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 2, 1, 1, 1, 2,
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};
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static const short calc2_defred[] = { 1,
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0, 0, 17, 0, 0, 0, 0, 0, 0, 3,
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0, 15, 14, 0, 2, 0, 0, 0, 0, 0,
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0, 0, 18, 0, 6, 0, 0, 0, 0, 9,
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10, 11,
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};
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static const short calc2_dgoto[] = { 1,
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7, 8, 9,
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};
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static const short calc2_sindex[] = { 0,
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-40, -7, 0, -55, -38, -38, 1, -29, -247, 0,
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-38, 0, 0, 22, 0, -38, -38, -38, -38, -38,
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-38, -38, 0, -29, 0, 51, 60, -20, -20, 0,
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0, 0,
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};
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static const short calc2_rindex[] = { 0,
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0, 0, 0, 2, 0, 0, 0, 9, -9, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 10, 0, -6, 14, 5, 13, 0,
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0, 0,
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};
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static const short calc2_gindex[] = { 0,
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0, 65, 0,
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};
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#define YYTABLESIZE 220
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static const short calc2_table[] = { 6,
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16, 6, 10, 13, 5, 11, 5, 22, 17, 23,
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15, 15, 20, 18, 7, 19, 22, 21, 4, 5,
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0, 20, 8, 12, 0, 0, 21, 16, 16, 0,
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0, 16, 16, 16, 13, 16, 0, 16, 15, 15,
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0, 0, 7, 15, 15, 7, 15, 7, 15, 7,
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8, 12, 0, 8, 12, 8, 0, 8, 22, 17,
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0, 0, 25, 20, 18, 0, 19, 0, 21, 13,
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14, 0, 0, 0, 0, 24, 0, 0, 0, 0,
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26, 27, 28, 29, 30, 31, 32, 22, 17, 0,
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0, 0, 20, 18, 16, 19, 22, 21, 0, 0,
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0, 20, 18, 0, 19, 0, 21, 0, 0, 0,
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0, 0, 0, 0, 16, 0, 0, 13, 0, 0,
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0, 0, 0, 0, 0, 15, 0, 0, 7, 0,
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0, 0, 0, 0, 0, 0, 8, 12, 0, 0,
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0, 0, 0, 0, 0, 16, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 2, 3, 4, 3, 12,
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};
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static const short calc2_check[] = { 40,
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10, 40, 10, 10, 45, 61, 45, 37, 38, 257,
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10, 10, 42, 43, 10, 45, 37, 47, 10, 10,
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-1, 42, 10, 10, -1, -1, 47, 37, 38, -1,
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-1, 41, 42, 43, 41, 45, -1, 47, 37, 38,
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-1, -1, 38, 42, 43, 41, 45, 43, 47, 45,
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38, 38, -1, 41, 41, 43, -1, 45, 37, 38,
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-1, -1, 41, 42, 43, -1, 45, -1, 47, 5,
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6, -1, -1, -1, -1, 11, -1, -1, -1, -1,
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16, 17, 18, 19, 20, 21, 22, 37, 38, -1,
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-1, -1, 42, 43, 124, 45, 37, 47, -1, -1,
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-1, 42, 43, -1, 45, -1, 47, -1, -1, -1,
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-1, -1, -1, -1, 124, -1, -1, 124, -1, -1,
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-1, -1, -1, -1, -1, 124, -1, -1, 124, -1,
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-1, -1, -1, -1, -1, -1, 124, 124, -1, -1,
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-1, -1, -1, -1, -1, 124, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, 256, 257, 258, 257, 258,
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};
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#define YYFINAL 1
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#ifndef YYDEBUG
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#define YYDEBUG 0
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#endif
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#define YYMAXTOKEN 259
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#if YYDEBUG
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static const char *yyname[] = {
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"end-of-file",0,0,0,0,0,0,0,0,0,"'\\n'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,"'%'","'&'",0,"'('","')'","'*'","'+'",0,"'-'",0,"'/'",0,0,0,0,0,0,0,
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0,0,0,0,0,0,"'='",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"'|'",0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,"DIGIT","LETTER","UMINUS",
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};
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static const char *yyrule[] = {
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"$accept : list",
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"list :",
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"list : list stat '\\n'",
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"list : list error '\\n'",
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"stat : expr",
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"stat : LETTER '=' expr",
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"expr : '(' expr ')'",
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"expr : expr '+' expr",
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"expr : expr '-' expr",
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"expr : expr '*' expr",
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"expr : expr '/' expr",
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"expr : expr '%' expr",
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"expr : expr '&' expr",
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"expr : expr '|' expr",
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"expr : '-' expr",
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"expr : LETTER",
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"expr : number",
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"number : DIGIT",
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"number : number DIGIT",
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};
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#endif
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int yydebug;
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int yynerrs;
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int yyerrflag;
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int yychar;
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YYSTYPE yyval;
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YYSTYPE yylval;
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/* define the initial stack-sizes */
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#ifdef YYSTACKSIZE
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#undef YYMAXDEPTH
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#define YYMAXDEPTH YYSTACKSIZE
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#else
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#ifdef YYMAXDEPTH
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#define YYSTACKSIZE YYMAXDEPTH
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#else
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#define YYSTACKSIZE 500
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#define YYMAXDEPTH 500
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#endif
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#endif
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#define YYINITSTACKSIZE 500
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typedef struct {
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unsigned stacksize;
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short *s_base;
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short *s_mark;
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short *s_last;
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YYSTYPE *l_base;
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YYSTYPE *l_mark;
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} YYSTACKDATA;
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/* variables for the parser stack */
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static YYSTACKDATA yystack;
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#line 65 "calc2.y"
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/* start of programs */
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#ifdef YYBYACC
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extern int YYLEX_DECL();
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static void YYERROR_DECL();
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#endif
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int
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main (void)
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{
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int regs[26];
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int base = 10;
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while(!feof(stdin)) {
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yyparse(regs, &base);
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}
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return 0;
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}
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static void
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YYERROR_DECL()
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{
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fprintf(stderr, "%s\n", s);
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}
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int
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yylex(int *base)
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{
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/* lexical analysis routine */
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/* returns LETTER for a lower case letter, yylval = 0 through 25 */
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/* return DIGIT for a digit, yylval = 0 through 9 */
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/* all other characters are returned immediately */
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int c;
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while( (c=getchar()) == ' ' ) { /* skip blanks */ }
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/* c is now nonblank */
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if( islower( c )) {
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yylval = c - 'a';
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return ( LETTER );
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}
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if( isdigit( c )) {
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yylval = (c - '0') % (*base);
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return ( DIGIT );
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}
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return( c );
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}
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#line 345 "calc2.tab.c"
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#if YYDEBUG
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#include <stdio.h> /* needed for printf */
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#endif
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#include <stdlib.h> /* needed for malloc, etc */
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#include <string.h> /* needed for memset */
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/* allocate initial stack or double stack size, up to YYMAXDEPTH */
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static int yygrowstack(YYSTACKDATA *data)
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{
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int i;
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unsigned newsize;
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short *newss;
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YYSTYPE *newvs;
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if ((newsize = data->stacksize) == 0)
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newsize = YYINITSTACKSIZE;
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else if (newsize >= YYMAXDEPTH)
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return -1;
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else if ((newsize *= 2) > YYMAXDEPTH)
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newsize = YYMAXDEPTH;
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i = data->s_mark - data->s_base;
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newss = (short *)realloc(data->s_base, newsize * sizeof(*newss));
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if (newss == 0)
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return -1;
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data->s_base = newss;
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data->s_mark = newss + i;
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newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs));
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if (newvs == 0)
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return -1;
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data->l_base = newvs;
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data->l_mark = newvs + i;
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data->stacksize = newsize;
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data->s_last = data->s_base + newsize - 1;
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return 0;
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}
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#if YYPURE || defined(YY_NO_LEAKS)
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static void yyfreestack(YYSTACKDATA *data)
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{
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free(data->s_base);
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free(data->l_base);
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memset(data, 0, sizeof(*data));
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}
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#else
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#define yyfreestack(data) /* nothing */
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#endif
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#define YYABORT goto yyabort
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#define YYREJECT goto yyabort
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#define YYACCEPT goto yyaccept
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#define YYERROR goto yyerrlab
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int
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YYPARSE_DECL()
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{
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int yym, yyn, yystate;
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#if YYDEBUG
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const char *yys;
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if ((yys = getenv("YYDEBUG")) != 0)
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{
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yyn = *yys;
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if (yyn >= '0' && yyn <= '9')
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yydebug = yyn - '0';
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}
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#endif
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yynerrs = 0;
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yyerrflag = 0;
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yychar = YYEMPTY;
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yystate = 0;
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#if YYPURE
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memset(&yystack, 0, sizeof(yystack));
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#endif
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if (yystack.s_base == NULL && yygrowstack(&yystack)) goto yyoverflow;
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yystack.s_mark = yystack.s_base;
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yystack.l_mark = yystack.l_base;
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yystate = 0;
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*yystack.s_mark = 0;
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yyloop:
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if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
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if (yychar < 0)
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{
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if ((yychar = YYLEX) < 0) yychar = 0;
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#if YYDEBUG
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if (yydebug)
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{
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yys = 0;
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if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
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if (!yys) yys = "illegal-symbol";
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printf("%sdebug: state %d, reading %d (%s)\n",
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YYPREFIX, yystate, yychar, yys);
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}
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#endif
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}
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if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
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yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
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{
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#if YYDEBUG
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if (yydebug)
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printf("%sdebug: state %d, shifting to state %d\n",
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YYPREFIX, yystate, yytable[yyn]);
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#endif
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if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack))
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{
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goto yyoverflow;
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}
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yystate = yytable[yyn];
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*++yystack.s_mark = yytable[yyn];
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*++yystack.l_mark = yylval;
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yychar = YYEMPTY;
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if (yyerrflag > 0) --yyerrflag;
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goto yyloop;
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}
|
|
if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
|
|
yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
|
|
{
|
|
yyn = yytable[yyn];
|
|
goto yyreduce;
|
|
}
|
|
if (yyerrflag) goto yyinrecovery;
|
|
|
|
yyerror(regs, base, "syntax error");
|
|
|
|
goto yyerrlab;
|
|
|
|
yyerrlab:
|
|
++yynerrs;
|
|
|
|
yyinrecovery:
|
|
if (yyerrflag < 3)
|
|
{
|
|
yyerrflag = 3;
|
|
for (;;)
|
|
{
|
|
if ((yyn = yysindex[*yystack.s_mark]) && (yyn += YYERRCODE) >= 0 &&
|
|
yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
|
|
{
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
printf("%sdebug: state %d, error recovery shifting\
|
|
to state %d\n", YYPREFIX, *yystack.s_mark, yytable[yyn]);
|
|
#endif
|
|
if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack))
|
|
{
|
|
goto yyoverflow;
|
|
}
|
|
yystate = yytable[yyn];
|
|
*++yystack.s_mark = yytable[yyn];
|
|
*++yystack.l_mark = yylval;
|
|
goto yyloop;
|
|
}
|
|
else
|
|
{
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
printf("%sdebug: error recovery discarding state %d\n",
|
|
YYPREFIX, *yystack.s_mark);
|
|
#endif
|
|
if (yystack.s_mark <= yystack.s_base) goto yyabort;
|
|
--yystack.s_mark;
|
|
--yystack.l_mark;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (yychar == 0) goto yyabort;
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
{
|
|
yys = 0;
|
|
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
|
|
if (!yys) yys = "illegal-symbol";
|
|
printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
|
|
YYPREFIX, yystate, yychar, yys);
|
|
}
|
|
#endif
|
|
yychar = YYEMPTY;
|
|
goto yyloop;
|
|
}
|
|
|
|
yyreduce:
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
printf("%sdebug: state %d, reducing by rule %d (%s)\n",
|
|
YYPREFIX, yystate, yyn, yyrule[yyn]);
|
|
#endif
|
|
yym = yylen[yyn];
|
|
if (yym)
|
|
yyval = yystack.l_mark[1-yym];
|
|
else
|
|
memset(&yyval, 0, sizeof yyval);
|
|
switch (yyn)
|
|
{
|
|
case 3:
|
|
#line 27 "calc2.y"
|
|
{ yyerrok ; }
|
|
break;
|
|
case 4:
|
|
#line 31 "calc2.y"
|
|
{ printf("%d\n",yystack.l_mark[0]);}
|
|
break;
|
|
case 5:
|
|
#line 33 "calc2.y"
|
|
{ regs[yystack.l_mark[-2]] = yystack.l_mark[0]; }
|
|
break;
|
|
case 6:
|
|
#line 37 "calc2.y"
|
|
{ yyval = yystack.l_mark[-1]; }
|
|
break;
|
|
case 7:
|
|
#line 39 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] + yystack.l_mark[0]; }
|
|
break;
|
|
case 8:
|
|
#line 41 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] - yystack.l_mark[0]; }
|
|
break;
|
|
case 9:
|
|
#line 43 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] * yystack.l_mark[0]; }
|
|
break;
|
|
case 10:
|
|
#line 45 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] / yystack.l_mark[0]; }
|
|
break;
|
|
case 11:
|
|
#line 47 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] % yystack.l_mark[0]; }
|
|
break;
|
|
case 12:
|
|
#line 49 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] & yystack.l_mark[0]; }
|
|
break;
|
|
case 13:
|
|
#line 51 "calc2.y"
|
|
{ yyval = yystack.l_mark[-2] | yystack.l_mark[0]; }
|
|
break;
|
|
case 14:
|
|
#line 53 "calc2.y"
|
|
{ yyval = - yystack.l_mark[0]; }
|
|
break;
|
|
case 15:
|
|
#line 55 "calc2.y"
|
|
{ yyval = regs[yystack.l_mark[0]]; }
|
|
break;
|
|
case 17:
|
|
#line 60 "calc2.y"
|
|
{ yyval = yystack.l_mark[0]; (*base) = (yystack.l_mark[0]==0) ? 8 : 10; }
|
|
break;
|
|
case 18:
|
|
#line 62 "calc2.y"
|
|
{ yyval = (*base) * yystack.l_mark[-1] + yystack.l_mark[0]; }
|
|
break;
|
|
#line 611 "calc2.tab.c"
|
|
}
|
|
yystack.s_mark -= yym;
|
|
yystate = *yystack.s_mark;
|
|
yystack.l_mark -= yym;
|
|
yym = yylhs[yyn];
|
|
if (yystate == 0 && yym == 0)
|
|
{
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
printf("%sdebug: after reduction, shifting from state 0 to\
|
|
state %d\n", YYPREFIX, YYFINAL);
|
|
#endif
|
|
yystate = YYFINAL;
|
|
*++yystack.s_mark = YYFINAL;
|
|
*++yystack.l_mark = yyval;
|
|
if (yychar < 0)
|
|
{
|
|
if ((yychar = YYLEX) < 0) yychar = 0;
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
{
|
|
yys = 0;
|
|
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
|
|
if (!yys) yys = "illegal-symbol";
|
|
printf("%sdebug: state %d, reading %d (%s)\n",
|
|
YYPREFIX, YYFINAL, yychar, yys);
|
|
}
|
|
#endif
|
|
}
|
|
if (yychar == 0) goto yyaccept;
|
|
goto yyloop;
|
|
}
|
|
if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
|
|
yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
|
|
yystate = yytable[yyn];
|
|
else
|
|
yystate = yydgoto[yym];
|
|
#if YYDEBUG
|
|
if (yydebug)
|
|
printf("%sdebug: after reduction, shifting from state %d \
|
|
to state %d\n", YYPREFIX, *yystack.s_mark, yystate);
|
|
#endif
|
|
if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack))
|
|
{
|
|
goto yyoverflow;
|
|
}
|
|
*++yystack.s_mark = (short) yystate;
|
|
*++yystack.l_mark = yyval;
|
|
goto yyloop;
|
|
|
|
yyoverflow:
|
|
yyerror(regs, base, "yacc stack overflow");
|
|
|
|
yyabort:
|
|
yyfreestack(&yystack);
|
|
return (1);
|
|
|
|
yyaccept:
|
|
yyfreestack(&yystack);
|
|
return (0);
|
|
}
|