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winamp/Src/ns-eel/nseel-caltab.c
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2024-09-24 14:54:57 +02:00

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/*
Nullsoft Expression Evaluator Library (NS-EEL)
Copyright (C) 1999-2003 Nullsoft, Inc.
nseel-caltab.c
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "ns-eel-int.h"
#define VALUE 258
#define IDENTIFIER 259
#define FUNCTION1 260
#define FUNCTION2 261
#define FUNCTION3 262
#define UMINUS 263
#define UPLUS 264
#define YYSTYPE int
#define YYERROR(x) nseel_yyerror(ctx)
#define YYFINAL 51
#define YYFLAG -32768
#define YYNTBASE 21
#define YYTRANSLATE(x) ((unsigned)(x) <= 264 ? yytranslate[x] : 26)
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, 2, 2, 2, 2, 14, 9, 2, 18,
19, 12, 10, 20, 11, 2, 13, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
17, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 8, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 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, 15, 16
};
static const short yyr1[] = { 0,
21, 21, 22, 23, 23, 23, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 25, 25, 25
};
static const short yyr2[] = { 0,
1, 3, 1, 1, 1, 3, 1, 3, 3, 3,
3, 3, 3, 3, 2, 2, 1, 4, 6, 8
};
static const short yydefact[] = { 0,
3, 4, 0, 0, 0, 0, 0, 0, 5, 7,
1, 17, 0, 0, 0, 0, 4, 16, 15, 0,
0, 0, 0, 0, 0, 0, 0, 2, 0, 0,
0, 6, 14, 13, 11, 12, 8, 9, 10, 18,
0, 0, 0, 0, 19, 0, 0, 20, 0, 0,
0
};
static const short yydefgoto[] = { 49,
9, 10, 11, 12
};
static const short yypact[] = { 19,
-32768, -11, -7, -5, -4, 38, 38, 38,-32768,-32768,
136,-32768, 38, 38, 38, 38,-32768,-32768,-32768, 88,
38, 38, 38, 38, 38, 38, 38, 136, 100, 49,
62,-32768, 41, 54, -9, -9,-32768,-32768,-32768,-32768,
38, 38, 112, 75,-32768, 38, 124,-32768, 12, 27,
-32768
};
static const short yypgoto[] = {-32768,
-32768,-32768, -6,-32768
};
#define YYLAST 150
static const short yytable[] = { 18,
19, 20, 25, 26, 27, 13, 28, 29, 30, 31,
14, 50, 15, 16, 33, 34, 35, 36, 37, 38,
39, 1, 2, 3, 4, 5, 51, 0, 6, 7,
0, 0, 0, 0, 43, 44, 8, 0, 0, 47,
1, 17, 3, 4, 5, 0, 0, 6, 7, 22,
23, 24, 25, 26, 27, 8, 21, 22, 23, 24,
25, 26, 27, 23, 24, 25, 26, 27, 41, 21,
22, 23, 24, 25, 26, 27, 0, 0, 0, 0,
0, 42, 21, 22, 23, 24, 25, 26, 27, 0,
0, 0, 0, 0, 46, 21, 22, 23, 24, 25,
26, 27, 0, 0, 0, 0, 32, 21, 22, 23,
24, 25, 26, 27, 0, 0, 0, 0, 40, 21,
22, 23, 24, 25, 26, 27, 0, 0, 0, 0,
45, 21, 22, 23, 24, 25, 26, 27, 0, 0,
0, 0, 48, 21, 22, 23, 24, 25, 26, 27
};
static const short yycheck[] = { 6,
7, 8, 12, 13, 14, 17, 13, 14, 15, 16,
18, 0, 18, 18, 21, 22, 23, 24, 25, 26,
27, 3, 4, 5, 6, 7, 0, -1, 10, 11,
-1, -1, -1, -1, 41, 42, 18, -1, -1, 46,
3, 4, 5, 6, 7, -1, -1, 10, 11, 9,
10, 11, 12, 13, 14, 18, 8, 9, 10, 11,
12, 13, 14, 10, 11, 12, 13, 14, 20, 8,
9, 10, 11, 12, 13, 14, -1, -1, -1, -1,
-1, 20, 8, 9, 10, 11, 12, 13, 14, -1,
-1, -1, -1, -1, 20, 8, 9, 10, 11, 12,
13, 14, -1, -1, -1, -1, 19, 8, 9, 10,
11, 12, 13, 14, -1, -1, -1, -1, 19, 8,
9, 10, 11, 12, 13, 14, -1, -1, -1, -1,
19, 8, 9, 10, 11, 12, 13, 14, -1, -1,
-1, -1, 19, 8, 9, 10, 11, 12, 13, 14
};
#define yyerrok (yyerrstatus = 0)
#define yyclearin (ctx->yychar = YYEMPTY)
#define YYEMPTY -2
#define YYEOF 0
#define YYACCEPT return(0)
#define YYABORT return(1)
#define YYTERROR 1
#define YYERRCODE 256
#define YYLEX nseel_yylex(ctx,&exp)
/* If nonreentrant, generate the variables here */
/* YYINITDEPTH indicates the initial size of the parser's stacks */
#define YYINITDEPTH 5000
#define YYMAXDEPTH 5000
/* This is the most reliable way to avoid incompatibilities
in available built-in functions on various systems. */
#define __yy_bcopy(from,to,count) memcpy(to,from,(count)>0?(count):0)
//#ln 131 "bison.simple"
int nseel_yyparse(compileContext *ctx, char *exp)
{
int yystate;
int yyn;
short *yyssp;
YYSTYPE *yyvsp;
int yyerrstatus; /* number of tokens to shift before error messages enabled */
int yychar1; /* lookahead token as an internal (translated) token number */
short yyssa[YYINITDEPTH]; /* the state stack */
YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
short *yyss = yyssa; /* refer to the stacks thru separate pointers */
YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
int yystacksize = YYINITDEPTH;
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
int yylen;
ctx->yylval = 0;
yystate = 0;
yyerrstatus = 0;
ctx->yynerrs = 0;
ctx->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;
/* 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 + yystacksize - 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;
short *yyss1 = yyss;
/* Get the current used size of the three stacks, in elements. */
int size = yyssp - yyss + 1;
if (yystacksize >= YYMAXDEPTH)
{
YYERROR("internal error: parser stack overflow");
return 2;
}
yyssp = yyss + size - 1;
yyvsp = yyvs + size - 1;
if (yyssp >= yyss + yystacksize - 1) YYABORT;
}
// yybackup:
/* 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 (ctx->yychar == YYEMPTY)
{
// yyStackSize = yyssp - (yyss - 1);
ctx->yychar = YYLEX;
}
/* Convert token to internal form (in yychar1) for indexing tables with */
if (ctx->yychar <= 0) /* This means end of input. */
{
yychar1 = 0;
ctx->yychar = YYEOF; /* Don't call YYLEX any more */
}
else
{
yychar1 = YYTRANSLATE(ctx->yychar);
}
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. */
/* Discard the token being shifted unless it is eof. */
if (ctx->yychar != YYEOF)
ctx->yychar = YYEMPTY;
*++yyvsp = ctx->yylval;
/* 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 */
switch (yyn) {
case 1:
//#ln 32 "cal.y"
{ yyval = yyvsp[0]; ctx->result = yyvsp[0]; ;
break;}
case 2:
//#ln 34 "cal.y"
{ {
int i = (int)nseel_setVar(ctx,(int)yyvsp[-2]);
int v=nseel_getVar(ctx,i);
yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_ASSIGN, v, (int)yyvsp[0]);
ctx->result = yyval;
}
;
break;}
case 3:
//#ln 50 "cal.y"
{ yyval = yyvsp[0] ;
break;}
case 4:
//#ln 55 "cal.y"
{ yyval = nseel_getVar(ctx,(int)yyvsp[0]);;
break;}
case 5:
//#ln 57 "cal.y"
{ yyval = yyvsp[0];;
break;}
case 6:
//#ln 59 "cal.y"
{ yyval = yyvsp[-1];;
break;}
case 7:
//#ln 64 "cal.y"
{ yyval = yyvsp[0]; ;
break;}
case 8:
//#ln 66 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_MULTIPLY, yyvsp[-2], yyvsp[0]);
break;}
case 9:
//#ln 72 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_DIVIDE, yyvsp[-2], yyvsp[0]);
break;}
case 10:
//#ln 78 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_MODULO, yyvsp[-2], yyvsp[0]);
break;}
case 11:
//#ln 84 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_ADD, yyvsp[-2], yyvsp[0]);
break;}
case 12:
//#ln 90 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_SUB, yyvsp[-2], yyvsp[0]);
break;}
case 13:
//#ln 96 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_AND, yyvsp[-2], yyvsp[0]);
break;}
case 14:
//#ln 102 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_OR, yyvsp[-2], yyvsp[0]);
break;}
case 15:
//#ln 108 "cal.y"
{ yyval = nseel_createCompiledFunction1(ctx,MATH_SIMPLE, FN_UMINUS, yyvsp[0]);
break;}
case 16:
//#ln 114 "cal.y"
{ yyval = nseel_createCompiledFunction1(ctx,MATH_SIMPLE, FN_UPLUS, yyvsp[0]);
break;}
case 17:
//#ln 120 "cal.y"
{ yyval = yyvsp[0];
break;}
case 18:
//#ln 125 "cal.y"
{ yyval = nseel_createCompiledFunction1(ctx,MATH_FN, (int)yyvsp[-3], yyvsp[-1]);
break;}
case 19:
//#ln 131 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_FN, (int)yyvsp[-5], yyvsp[-3], yyvsp[-1]);
break;}
case 20:
//#ln 137 "cal.y"
{ yyval = nseel_createCompiledFunction3(ctx,MATH_FN, (int)yyvsp[-7], yyvsp[-5], yyvsp[-3], yyvsp[-1]);
break;}
}
/* the action file gets copied in in place of this dollarsign */
//#ln 362 "bison.simple"
yyvsp -= yylen;
yyssp -= yylen;
*++yyvsp = yyval;
/* 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. */
{
++ctx->yynerrs;
#ifdef YYERROR_VERBOSE
yyn = yypact[yystate];
if (yyn > YYFLAG && yyn < YYLAST)
{
int size = 0;
char *msg;
int x, count;
count = 0;
for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
size += strlen(yytname[x]) + 15, count++;
#error this should not compile
msg = (char *) xmalloc(size + 15);
strcpy(msg, "syntax error");
if (count < 5)
{
count = 0;
for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
{
strcat(msg, count == 0 ? ", expecting `" : " or `");
strcat(msg, yytname[x]);
strcat(msg, "'");
count++;
}
}
YYERROR(msg);
free(msg);
}
else
#endif /* YYERROR_VERBOSE */
YYERROR("syntax error");
}
//yyerrlab1: /* here on error raised explicitly by an action */
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 (ctx->yychar == YYEOF) YYABORT;
ctx->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;
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;
*++yyvsp = ctx->yylval;
yystate = yyn;
goto yynewstate;
}
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