//------------------------------------------------------------------------------
INT_PTR nseel_lookup(compileContext *ctx, int *typeOfObject)
{
int i, ti, wb;
const char *nptr;
nseel_gettoken(ctx,ctx->yytext, sizeof(ctx->yytext));
if (!strnicmp(ctx->yytext,"reg",3) && strlen(ctx->yytext) == 5 && isdigit(ctx->yytext[3]) && isdigit(ctx->yytext[4]) && (i=atoi(ctx->yytext+3))>=0 && i<100)
{
*typeOfObject=IDENTIFIER;
return i+NSEEL_GLOBALVAR_BASE;
}
i=0;
for (wb = 0; wb < ctx->varTable_numBlocks; wb ++)
{
int namepos=0;
for (ti = 0; ti < NSEEL_VARS_PER_BLOCK; ti ++)
{
if (!ctx->varTable_Names[wb][namepos]) break;
if (!strnicmp(ctx->varTable_Names[wb]+namepos,ctx->yytext,NSEEL_MAX_VARIABLE_NAMELEN))
{
*typeOfObject = IDENTIFIER;
return i;
}
namepos += NSEEL_MAX_VARIABLE_NAMELEN;
i++;
}
if (ti < NSEEL_VARS_PER_BLOCK) break;
}
nptr = ctx->yytext;
if (!strcasecmp(nptr,"if")) nptr="_if";
else if (!strcasecmp(nptr,"bnot")) nptr="_not";
else if (!strcasecmp(nptr,"assign")) nptr="_set";
else if (!strcasecmp(nptr,"equal")) nptr="_equal";
else if (!strcasecmp(nptr,"below")) nptr="_below";
else if (!strcasecmp(nptr,"above")) nptr="_above";
else if (!strcasecmp(nptr,"megabuf")) nptr="_mem";
else if (!strcasecmp(nptr,"gmegabuf")) nptr="_gmem";
else if (!strcasecmp(nptr,"int")) nptr="floor";
for (i=0;nseel_getFunctionFromTable(i);i++)
{
functionType *f=nseel_getFunctionFromTable(i);
if (!strcasecmp(f->name, nptr))
{
switch (f->nParams)
{
case 1: *typeOfObject = FUNCTION1; break;
case 2: *typeOfObject = FUNCTION2; break;
case 3: *typeOfObject = FUNCTION3; break;
default: *typeOfObject = IDENTIFIER; break;
}
return i;
}
}
*typeOfObject = IDENTIFIER;
nseel_setLastVar(ctx);
return nseel_setVar(ctx,-1);
}
//#ln 131 "bison.simple"
int nseel_yyparse(compileContext *ctx, char *exp)
{
register int yystate;
register int yyn;
register short *yyssp;
register 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;
}
