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- // This may look like C code, but it is really -*- C++ -*-
-
- // A Bison++ parser, made from ParseExpr.y
-
- #ifndef stdin
- #include <stdio.h>
- #include <stdlib.h>
- #endif
-
- #line 20 "ParseExpr.y"
-
- #include <stream.h>
- #include <common.h>
- #include <ctype.h>
- #include <Card.h>
- #include <PTree.h>
-
- static Tree* result = 0;
-
- static const struct {
- const char* n;
- Fields f;
- } FieldNames[] = {
- { "TYPE", TypeField },
- { "AUTHOR", AuthorField },
- { "TITLE", TitleField },
- { "PUBLISHER", PublisherField },
- { "CITY", CityField },
- { "VOLUME", VolumeField },
- { "YEAR", YearField }
- };
-
- const NumFields = sizeof(FieldNames) / sizeof(FieldNames[0]);
-
- enum TypeErrors {OK, TyOK, NoConstant, NoField, MisMatch};
-
- static TypeErrors TypeCheck(Node* a, Node* b)
- {
- if (a->type == FieldNode && b->type == FieldNode) return(NoConstant);
- else if (a->type != FieldNode && b->type != FieldNode) return(NoField);
- else if (a->type != FieldNode) return(TypeCheck(b,a));
- else switch (a->value._field) {
- case TypeField: if (b->type == CardTypeNode) return(TyOK);
- else return(MisMatch);
- break;
- case AuthorField:
- case TitleField:
- case PublisherField:
- case CityField: if (b->type == StringNode) return(OK);
- else return(MisMatch);
- break;
- case VolumeField:
- case YearField: if (b->type == IntNode) return(OK);
- else return(MisMatch);
- break;
- }
- }
-
- #define MakeNode(v) (new Node(v))
- #define MakeTree(o,l,r) (new Tree(o,l,r))
-
- #if YYDEBUG != 0
- int yydebug = 0;
- #endif
-
- #ifdef MESSYDOS
- #include "prsexptb.h"
- #else
- #include "ParseExpr.tab.h"
- #endif
-
- const int ParseExpr::INTEGER = 258;
- const int ParseExpr::STRING = 259;
- const int ParseExpr::FIELD = 260;
- const int ParseExpr::CARDTYPE = 261;
- const int ParseExpr::BADWORD = 262;
- const int ParseExpr::NOTEQ = 263;
- const int ParseExpr::LESSEQ = 264;
- const int ParseExpr::GREATEREQ = 265;
-
-
- #define YYFINAL 31
- #define YYFLAG -32768
- #define YYNTBASE 19
-
- #define YYTRANSLATE(x) ((unsigned)(x) <= 265 ? yytranslate[x] : 22)
-
- 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, 16, 2, 2, 2, 2, 14, 2, 17,
- 18, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 11,
- 13, 12, 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, 15, 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, 2, 1, 2, 3, 4, 5,
- 6, 7, 8, 9, 10
- };
-
- static const short yyrline[] = { 0,
- 103, 107, 109, 111, 113, 115, 128, 141, 155, 169,
- 183, 199, 201, 203, 205, 207
- };
-
- static const char * const yytname[] = { 0,
- "error","$illegal.","INTEGER","STRING","FIELD","CARDTYPE","BADWORD","NOTEQ","LESSEQ","GREATEREQ",
- "'<'","'>'","'='","'&'","'|'","'!'","'('","')'","result"
- };
-
- static const short yyr1[] = { 0,
- 19, 20, 20, 20, 20, 20, 20, 20, 20, 20,
- 20, 21, 21, 21, 21, 21
- };
-
- static const short yyr2[] = { 0,
- 1, 3, 2, 3, 3, 3, 3, 3, 3, 3,
- 3, 1, 1, 1, 1, 1
- };
-
- static const short yydefact[] = { 0,
- 13, 12, 14, 15, 16, 0, 0, 1, 0, 3,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 2,
- 5, 4, 7, 10, 11, 8, 9, 6, 0, 0,
- 0
- };
-
- static const short yydefgoto[] = { 29,
- 8, 9
- };
-
- static const short yypact[] = { -3,
- -32768,-32768,-32768,-32768,-32768, -3, -3, -7, 7,-32768,
- 19, -3, -3, 25, 25, 25, 25, 25, 25,-32768,
- -32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768, 9, 10,
- -32768
- };
-
- static const short yypgoto[] = {-32768,
- -1, 8
- };
-
-
- #define YYLAST 37
-
-
- static const short yytable[] = { 1,
- 2, 3, 4, 5, 10, 11, 12, 13, 30, 31,
- 21, 22, 6, 7, 14, 15, 16, 17, 18, 19,
- 0, 23, 24, 25, 26, 27, 28, 1, 2, 3,
- 4, 5, 12, 13, 0, 0, 20
- };
-
- static const short yycheck[] = { 3,
- 4, 5, 6, 7, 6, 7, 14, 15, 0, 0,
- 12, 13, 16, 17, 8, 9, 10, 11, 12, 13,
- -1, 14, 15, 16, 17, 18, 19, 3, 4, 5,
- 6, 7, 14, 15, -1, -1, 18
- };
- #define YYPURE 1
-
- // This may look like C code, but it is really -*- C++ -*-
-
- /* Skeleton output parser for bison++,
- Copyright (C) 1984 Bob Corbett and Richard Stallman
- Copyright (C) 1989 Larry M. Augustin
-
- Adapted from the original for C++ by Larry M. Augustin.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- /* 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 YYACCEPT return(0)
- #define YYABORT return(1)
- #define YYERROR goto yyerrlab
-
- #define YYTERROR 1
- #define YYERRCODE 256
-
- #ifndef YYIMPURE
- #define YYLEX yylex()
- #endif
-
- #ifndef YYPURE
- #define YYLEX yylex(&yylval, &yylloc)
- #endif
-
- /* 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
-
- int ParseExpr::yyparse() {
- register int yystate;
- register int yyn;
- register short *yyssp;
- register ParseExpr_YYSTYPE *yyvsp;
- ParseExpr_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
- ParseExpr_YYSTYPE yyvsa[YYMAXDEPTH]; // the semantic value stack
- ParseExpr_YYLTYPE yylsa[YYMAXDEPTH]; // the location stack
-
- short *yyss = yyssa; // refer to the stacks thru separate pointers
- ParseExpr_YYSTYPE *yyvs = yyvsa; // to allow yyoverflow to reallocate them elsewhere
- ParseExpr_YYLTYPE *yyls = yylsa;
-
- int yymaxdepth = YYMAXDEPTH;
-
- #ifndef YYPURE
- int yychar;
- ParseExpr_YYSTYPE yylval;
- ParseExpr_YYLTYPE yylloc;
- int yynerrs;
- #endif
-
- ParseExpr_YYSTYPE yyval; /* the variable used to return */
- /* semantic values from the action */
- /* routines */
-
- int yylen;
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Starting parse\n");
- #endif
-
- yystate = 0;
- yyerrstatus = 0;
- yynerrs = 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. */
- ParseExpr_YYSTYPE *yyvs1 = yyvs;
- ParseExpr_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));
- yyvs = (ParseExpr_YYSTYPE *) alloca (yymaxdepth * sizeof (*yyvsp));
- bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
- #ifdef YYLSP_NEEDED
- yyls = (ParseExpr_YYLTYPE *) alloca (yymaxdepth * sizeof (*yylsp));
- bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
- #endif // YYLSP_NEEDED
- #endif /* no yyoverflow */
-
- yyssp = yyss + size - 1;
- yyvsp = yyvs + size - 1;
- #ifdef YYLSP_NEEDED
- yylsp = yyls + size - 1;
- #endif
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Stack size increased to %d\n", yymaxdepth);
- #endif
-
- if (yyssp >= yyss + yymaxdepth - 1)
- YYABORT;
- }
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Entering state %d\n", yystate);
- #endif
-
- /* Do appropriate processing given the current state. */
- /* Read a lookahead token if we need one and don't already have one. */
-
- /* 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)
- {
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Reading a token: ");
- #endif
- 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 != 0
- if (yydebug)
- fprintf(stderr, "Now at end of input.\n");
- #endif
- }
- else
- {
- yychar1 = YYTRANSLATE(yychar);
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Next token is %d (%s)\n", yychar, yytname[yychar1]);
- #endif
- }
-
- 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 != 0
- if (yydebug)
- fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
- #endif
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != YYEOF)
- yychar = YYEMPTY;
-
- *++yyvsp = yylval;
- #ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
- #endif
-
- /* 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 != 0
- 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]);
- }
- #endif
-
-
- switch (yyn) {
-
- case 1:
- #line 104 "ParseExpr.y"
- { result = yyvsp[0].trval; ;
- break;}
- case 2:
- #line 108 "ParseExpr.y"
- { yyval.trval = yyvsp[-1].trval; ;
- break;}
- case 3:
- #line 110 "ParseExpr.y"
- { yyval.trval = MakeTree(Not,MakeNode(yyvsp[0].trval),0); ;
- break;}
- case 4:
- #line 112 "ParseExpr.y"
- { yyval.trval = MakeTree(Or,MakeNode(yyvsp[-2].trval),MakeNode(yyvsp[0].trval)); ;
- break;}
- case 5:
- #line 114 "ParseExpr.y"
- { yyval.trval = MakeTree(And,MakeNode(yyvsp[-2].trval),MakeNode(yyvsp[0].trval)); ;
- break;}
- case 6:
- #line 116 "ParseExpr.y"
- {
- switch (TypeCheck(yyvsp[-2].nval,yyvsp[0].nval)) {
- case NoConstant: yyerror("Missing constant!");
- YYABORT;
- case NoField: yyerror("Missing field!");
- YYABORT;
- case MisMatch: yyerror("Type mismatch!");
- YYABORT;
- case TyOK:
- case OK: yyval.trval = MakeTree(Equal,yyvsp[-2].nval,yyvsp[0].nval);
- }
- ;
- break;}
- case 7:
- #line 129 "ParseExpr.y"
- {
- switch (TypeCheck(yyvsp[-2].nval,yyvsp[0].nval)) {
- case NoConstant: yyerror("Missing constant!");
- YYABORT;
- case NoField: yyerror("Missing field!");
- YYABORT;
- case MisMatch: yyerror("Type mismatch!");
- YYABORT;
- case TyOK:
- case OK: yyval.trval = MakeTree(NotEqual,yyvsp[-2].nval,yyvsp[0].nval);
- }
- ;
- break;}
- case 8:
- #line 142 "ParseExpr.y"
- {
- switch (TypeCheck(yyvsp[-2].nval,yyvsp[0].nval)) {
- case NoConstant: yyerror("Missing constant!");
- YYABORT;
- case NoField: yyerror("Missing field!");
- YYABORT;
- case MisMatch: yyerror("Type mismatch!");
- YYABORT;
- case TyOK: yyerror("< not allowed for Type");
- YYABORT;
- case OK: yyval.trval = MakeTree(Less,yyvsp[-2].nval,yyvsp[0].nval);
- }
- ;
- break;}
- case 9:
- #line 156 "ParseExpr.y"
- {
- switch (TypeCheck(yyvsp[-2].nval,yyvsp[0].nval)) {
- case NoConstant: yyerror("Missing constant!");
- YYABORT;
- case NoField: yyerror("Missing field!");
- YYABORT;
- case MisMatch: yyerror("Type mismatch!");
- YYABORT;
- case TyOK: yyerror("> not allowed for Type");
- YYABORT;
- case OK: yyval.trval = MakeTree(Greater,yyvsp[-2].nval,yyvsp[0].nval);
- }
- ;
- break;}
- case 10:
- #line 170 "ParseExpr.y"
- {
- switch (TypeCheck(yyvsp[-2].nval,yyvsp[0].nval)) {
- case NoConstant: yyerror("Missing constant!");
- YYABORT;
- case NoField: yyerror("Missing field!");
- YYABORT;
- case MisMatch: yyerror("Type mismatch!");
- YYABORT;
- case TyOK: yyerror("<= not allowed for Type");
- YYABORT;
- case OK: yyval.trval = MakeTree(LessEqual,yyvsp[-2].nval,yyvsp[0].nval);
- }
- ;
- break;}
- case 11:
- #line 184 "ParseExpr.y"
- {
- switch (TypeCheck(yyvsp[-2].nval,yyvsp[0].nval)) {
- case NoConstant: yyerror("Missing constant!");
- YYABORT;
- case NoField: yyerror("Missing field!");
- YYABORT;
- case MisMatch: yyerror("Type mismatch!");
- YYABORT;
- case TyOK: yyerror(">= not allowed for Type");
- YYABORT;
- case OK: yyval.trval = MakeTree(GreaterEqual,yyvsp[-2].nval,yyvsp[0].nval);
- }
- ;
- break;}
- case 12:
- #line 200 "ParseExpr.y"
- { yyval.nval = MakeNode(yyvsp[0].sval); ;
- break;}
- case 13:
- #line 202 "ParseExpr.y"
- { yyval.nval = MakeNode(yyvsp[0].ival); ;
- break;}
- case 14:
- #line 204 "ParseExpr.y"
- { yyval.nval = MakeNode(yyvsp[0].fval); ;
- break;}
- case 15:
- #line 206 "ParseExpr.y"
- { yyval.nval = MakeNode(yyvsp[0].tval); ;
- break;}
- case 16:
- #line 208 "ParseExpr.y"
- { yyerror("Unknown word"); YYABORT; ;
- break;}
- }
- /* the action file gets copied in in place of this dollarsign */
-
-
- yyvsp -= yylen;
- yyssp -= yylen;
- #ifdef YYLSP_NEEDED
- yylsp -= yylen;
- #endif
-
- #if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
- #endif
-
- *++yyvsp = yyval;
-
- #ifdef YYLSP_NEEDED
- 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;
- }
- #endif
-
- /* 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. */
- {
- ++yynerrs;
- 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)
- YYABORT;
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
- #endif
-
- 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) YYABORT;
- yyvsp--;
- yystate = *--yyssp;
- #ifdef YYLSP_NEEDED
- yylsp--;
- #endif
-
- #if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "Error: state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
- #endif
-
- 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 != 0
- if (yydebug)
- fprintf(stderr, "Shifting error token, ");
- #endif
-
- *++yyvsp = yylval;
- #ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
- #endif
-
- yystate = yyn;
- goto yynewstate;
- }
- #line 211 "ParseExpr.y"
-
-
- static char* original;
- static char* curpointer;
-
- Tree* ParseOnly(char* string)
- {
- ParseExpr parser;
- original = string;
- curpointer = original;
- if (parser.yyparse() == 0) return(result);
- else return(0);
- }
-
- void ParseExpr::yyerror(char* message)
- {
- cout << message << "\n";
- cout << original << "\n";
- for (int pos = curpointer-original; pos > 0; pos--) cout << '.';
- cout << "^\n";
- }
-
- int ParseExpr::yylex()
- {
- static char word[256];
-
- while (*curpointer != 0 && *curpointer <= ' ') curpointer++;
- if (*curpointer == 0) return(YYEOF);
- else if (isdigit(*curpointer)) {
- char* p = word;
- while (isdigit(*curpointer)) *p++ = *curpointer++;
- *p++ = 0;
- yylval.ival = atoi(word);
- return(INTEGER);
- } else if (*curpointer == '"') {
- curpointer++;
- char* p = word;
- while (*curpointer != '"') {
- if (*curpointer == '\\') curpointer++;
- *p++ = *curpointer++;
- }
- curpointer++;
- *p++ = 0;
- yylval.sval = new char[strlen(word)+1];
- strcpy(yylval.sval,word);
- return(STRING);
- } else if (isalpha(*curpointer)) {
- char* p = word;
- while (isalpha(*curpointer)) {
- char c = *curpointer++;
- if (islower(c)) *p++ = toupper(c);
- else *p++ = c;
- }
- *p++ = 0;
- if (CardTypeNameP(word)) {
- yylval.tval = NameType(word);
- return(CARDTYPE);
- } else {
- for (int i = 0; i < NumFields; i++) {
- if (strcmp(word,FieldNames[i].n) == 0) {
- yylval.fval = FieldNames[i].f;
- return(FIELD);
- }
- }
- return(BADWORD);
- }
- } else if (*curpointer == '!' && *(curpointer+1) == '=') {
- curpointer += 2;
- return(NOTEQ);
- } else if (*curpointer == '<' && *(curpointer+1) == '=') {
- curpointer += 2;
- return(LESSEQ);
- } else if (*curpointer == '>' && *(curpointer+1) == '=') {
- curpointer += 2;
- return(GREATEREQ);
- } else return(*curpointer++);
- }
-
-
-