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Merge branch 'master' of https://github.com/rheit/zdoom into zscript

This commit is contained in:
Christoph Oelckers 2016-10-14 09:11:54 +02:00
parent 7de683f9f5 97107b6b6d
commit b8a2059aa9
3 changed files with 245 additions and 154 deletions
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2
src/scripting/zscript/zcc-parse.lemon
View File

@ -79,7 +79,7 @@ static void SetNodeLine(ZCC_TreeNode *name, int line)
FString unexpected, expecting;
int i;
int stateno = yypParser->yystack[yypParser->yyidx].stateno;
int stateno = yypParser->yytos->stateno;
unexpected << "Unexpected " << ZCCTokenName(yymajor);

134
tools/lemon/lemon.c
View File

@ -167,7 +167,8 @@ struct symbol {
int useCnt; /* Number of times used */
char *destructor; /* Code which executes whenever this symbol is
** popped from the stack during error processing */
int destLineno; /* Line number for start of destructor */
int destLineno; /* Line number for start of destructor. Set to
** -1 for duplicate destructors. */
char *datatype; /* The data type of information held by this
** object. Only used if type==NONTERMINAL */
int dtnum; /* The data type number. In the parser, the value
@ -192,10 +193,13 @@ struct rule {
const char *code; /* The code executed when this rule is reduced */
const char *codePrefix; /* Setup code before code[] above */
const char *codeSuffix; /* Breakdown code after code[] above */
int noCode; /* True if this rule has no associated C code */
int codeEmitted; /* True if the code has been emitted already */
struct symbol *precsym; /* Precedence symbol for this rule */
int index; /* An index number for this rule */
int iRule; /* Rule number as used in the generated tables */
Boolean canReduce; /* True if this rule is ever reduced */
Boolean doesReduce; /* Reduce actions occur after optimization */
struct rule *nextlhs; /* Next rule with the same LHS */
struct rule *next; /* Next rule in the global list */
};
@ -243,6 +247,7 @@ struct action {
struct state *stp; /* The new state, if a shift */
struct rule *rp; /* The rule, if a reduce */
} x;
struct symbol *spOpt; /* SHIFTREDUCE optimization to this symbol */
struct action *next; /* Next action for this state */
struct action *collide; /* Next action with the same hash */
};
@ -253,7 +258,7 @@ struct state {
struct config *bp; /* The basis configurations for this state */
struct config *cfp; /* All configurations in this set */
int statenum; /* Sequential number for this state */
struct action *ap; /* Array of actions for this state */
struct action *ap; /* List of actions for this state */
int nTknAct, nNtAct; /* Number of actions on terminals and nonterminals */
int iTknOfst, iNtOfst; /* yy_action[] offset for terminals and nonterms */
int iDfltReduce; /* Default action is to REDUCE by this rule */
@ -433,6 +438,7 @@ void Action_add(
*app = newaction;
newaction->type = type;
newaction->sp = sp;
newaction->spOpt = 0;
if( type==SHIFT ){
newaction->x.stp = (struct state *)arg;
}else{
@ -1483,7 +1489,7 @@ static void handle_C_option(char *z){
}
}
/* Merge together to lists of rules order by rule.iRule */
/* Merge together to lists of rules ordered by rule.iRule */
static struct rule *Rule_merge(struct rule *pA, struct rule *pB){
struct rule *pFirst = 0;
struct rule **ppPrev = &pFirst;
@ -1627,7 +1633,10 @@ int main(int argc, char **argv)
for(i=1; ISUPPER(lem.symbols[i]->name[0]); i++);
lem.nterminal = i;
/* Assign sequential rule numbers */
/* Assign sequential rule numbers. Start with 0. Put rules that have no
** reduce action C-code associated with them last, so that the switch()
** statement that selects reduction actions will have a smaller jump table.
*/
for(i=0, rp=lem.rule; rp; rp=rp->next){
rp->iRule = rp->code ? i++ : -1;
}
@ -2179,7 +2188,7 @@ static void parseonetoken(struct pstate *psp)
"There is no prior rule upon which to attach the code \
fragment which begins on this line.");
psp->errorcnt++;
}else if( psp->prevrule->code!=0 ){
}else if( psp->prevrule->code!=0 ){
ErrorMsg(psp->filename,psp->tokenlineno,
"Code fragment beginning on this line is not the first \
to follow the previous rule.");
@ -2187,7 +2196,8 @@ to follow the previous rule.");
}else{
psp->prevrule->line = psp->tokenlineno;
psp->prevrule->code = &x[1];
}
psp->prevrule->noCode = 0;
}
}else if( x[0]=='[' ){
psp->state = PRECEDENCE_MARK_1;
}else{
@ -2293,6 +2303,7 @@ to follow the previous rule.");
rp->lhsalias = psp->lhsalias;
rp->nrhs = psp->nrhs;
rp->code = 0;
rp->noCode = 1;
rp->precsym = 0;
rp->index = psp->gp->nrule++;
rp->nextlhs = rp->lhs->rule;
@ -3153,6 +3164,9 @@ int PrintAction(
result = 0;
break;
}
if( result && ap->spOpt ){
fprintf(fp," /* because %s==%s */", ap->sp->name, ap->spOpt->name);
}
return result;
}
@ -3531,9 +3545,8 @@ PRIVATE char *append_str(const char *zText, int n, int p1, int p2, int bNoSubst)
}
/*
** zCode is a string that is the action associated with a rule. Expand
** the symbols in this string so that the refer to elements of the parser
** stack.
** Write and transform the rp->code string so that symbols are expanded.
** Populate the rp->codePrefix and rp->codeSuffix strings, as appropriate.
**
** Return 1 if the expanded code requires that "yylhsminor" local variable
** to be defined.
@ -3557,12 +3570,12 @@ PRIVATE int translate_code(struct lemon *lemp, struct rule *rp){
static char newlinestr[2] = { '\n', '\0' };
rp->code = newlinestr;
rp->line = rp->ruleline;
rp->noCode = 1;
}else{
rp->noCode = 0;
}
if( rp->lhsalias==0 ){
/* There is no LHS value symbol. */
lhsdirect = 1;
}else if( rp->nrhs==0 ){
if( rp->nrhs==0 ){
/* If there are no RHS symbols, then writing directly to the LHS is ok */
lhsdirect = 1;
}else if( rp->rhsalias[0]==0 ){
@ -3574,7 +3587,11 @@ PRIVATE int translate_code(struct lemon *lemp, struct rule *rp){
append_str(" yy_destructor(yypParser,%d,&yymsp[%d].minor);\n", 0,
rp->rhs[0]->index,1-rp->nrhs,0);
rp->codePrefix = Strsafe(append_str(0,0,0,0,0));
rp->noCode = 0;
}
}else if( rp->lhsalias==0 ){
/* There is no LHS value symbol. */
lhsdirect = 1;
}else if( strcmp(rp->lhsalias,rp->rhsalias[0])==0 ){
/* The LHS symbol and the left-most RHS symbol are the same, so
** direct writing is allowed */
@ -3717,7 +3734,10 @@ PRIVATE int translate_code(struct lemon *lemp, struct rule *rp){
/* Suffix code generation complete */
cp = append_str(0,0,0,0,0);
if( cp ) rp->codeSuffix = Strsafe(cp);
if( cp && cp[0] ){
rp->codeSuffix = Strsafe(cp);
rp->noCode = 0;
}
return rc;
}
@ -4136,6 +4156,19 @@ void ReportTable(
}
free(ax);
/* Mark rules that are actually used for reduce actions after all
** optimizations have been applied
*/
for(rp=lemp->rule; rp; rp=rp->next) rp->doesReduce = LEMON_FALSE;
for(i=0; i<lemp->nxstate; i++){
struct action *ap;
for(ap=lemp->sorted[i]->ap; ap; ap=ap->next){
if( ap->type==REDUCE || ap->type==SHIFTREDUCE ){
ap->x.rp->doesReduce = i;
}
}
}
/* Finish rendering the constants now that the action table has
** been computed */
fprintf(out,"#define YYNSTATE %d\n",lemp->nxstate); lineno++;
@ -4201,20 +4234,21 @@ void ReportTable(
fprintf(out, "};\n"); lineno++;
/* Output the yy_shift_ofst[] table */
fprintf(out, "#define YY_SHIFT_USE_DFLT (%d)\n", mnTknOfst-1); lineno++;
n = lemp->nxstate;
while( n>0 && lemp->sorted[n-1]->iTknOfst==NO_OFFSET ) n--;
fprintf(out, "#define YY_SHIFT_COUNT (%d)\n", n-1); lineno++;
fprintf(out, "#define YY_SHIFT_MIN (%d)\n", mnTknOfst); lineno++;
fprintf(out, "#define YY_SHIFT_MAX (%d)\n", mxTknOfst); lineno++;
fprintf(out, "#define YY_SHIFT_USE_DFLT (%d)\n", lemp->nactiontab); lineno++;
fprintf(out, "#define YY_SHIFT_COUNT (%d)\n", n-1); lineno++;
fprintf(out, "#define YY_SHIFT_MIN (%d)\n", mnTknOfst); lineno++;
fprintf(out, "#define YY_SHIFT_MAX (%d)\n", mxTknOfst); lineno++;
fprintf(out, "static const %s yy_shift_ofst[] = {\n",
minimum_size_type(mnTknOfst-1, mxTknOfst, &sz)); lineno++;
minimum_size_type(mnTknOfst, lemp->nterminal+lemp->nactiontab, &sz));
lineno++;
lemp->tablesize += n*sz;
for(i=j=0; i<n; i++){
int ofst;
stp = lemp->sorted[i];
ofst = stp->iTknOfst;
if( ofst==NO_OFFSET ) ofst = mnTknOfst - 1;
if( ofst==NO_OFFSET ) ofst = lemp->nactiontab;
if( j==0 ) fprintf(out," /* %5d */ ", i);
fprintf(out, " %4d,", ofst);
if( j==9 || i==n-1 ){
@ -4354,6 +4388,7 @@ void ReportTable(
for(i=0; i<lemp->nsymbol; i++){
struct symbol *sp = lemp->symbols[i];
if( sp==0 || sp->type==TERMINAL || sp->destructor==0 ) continue;
if( sp->destLineno<0 ) continue; /* Already emitted */
fprintf(out," case %d: /* %s */\n", sp->index, sp->name); lineno++;
/* Combine duplicate destructors into a single case */
@ -4364,7 +4399,7 @@ void ReportTable(
&& strcmp(sp->destructor,sp2->destructor)==0 ){
fprintf(out," case %d: /* %s */\n",
sp2->index, sp2->name); lineno++;
sp2->destructor = 0;
sp2->destLineno = -1; /* Avoid emitting this destructor again */
}
}
@ -4398,32 +4433,41 @@ void ReportTable(
/* First output rules other than the default: rule */
for(rp=lemp->rule; rp; rp=rp->next){
struct rule *rp2; /* Other rules with the same action */
if( rp->code==0 ) continue;
if( rp->code[0]=='\n' && rp->code[1]==0 ) continue; /* Will be default: */
if( rp->codeEmitted ) continue;
if( rp->noCode ){
/* No C code actions, so this will be part of the "default:" rule */
continue;
}
fprintf(out," case %d: /* ",rp->iRule);
writeRuleText(out, rp);
fprintf(out," */\n"); lineno++;
for(rp2=rp->next; rp2; rp2=rp2->next){
if( rp2->code==rp->code ){
if( rp2->code==rp->code && rp2->codePrefix==rp->codePrefix
&& rp2->codeSuffix == rp->codeSuffix ){
fprintf(out," case %d: /*",rp2->iRule);
writeRuleText(out, rp2);
fprintf(out, " */ yytestcase(yyruleno==%d);\n", rp2->iRule); lineno++;
rp2->code = 0;
rp2->codeEmitted = 1;
}
}
emit_code(out,rp,lemp,&lineno);
fprintf(out," break;\n"); lineno++;
rp->code = 0;
rp->codeEmitted = 1;
}
/* Finally, output the default: rule. We choose as the default: all
** empty actions. */
fprintf(out," default:\n"); lineno++;
for(rp=lemp->rule; rp; rp=rp->next){
if( rp->code==0 ) continue;
assert( rp->code[0]=='\n' && rp->code[1]==0 );
if( rp->codeEmitted ) continue;
assert( rp->noCode );
fprintf(out," /* (%d) ", rp->iRule);
writeRuleText(out, rp);
fprintf(out," */ yytestcase(yyruleno==%d);\n", rp->iRule); lineno++;
if( rp->doesReduce ){
fprintf(out, " */ yytestcase(yyruleno==%d);\n", rp->iRule); lineno++;
}else{
fprintf(out, " (OPTIMIZED OUT) */ assert(yyruleno!=%d);\n",
rp->iRule); lineno++;
}
}
fprintf(out," break;\n"); lineno++;
tplt_xfer(lemp->name,in,out,&lineno);
@ -4496,7 +4540,7 @@ void ReportHeader(struct lemon *lemp)
void CompressTables(struct lemon *lemp)
{
struct state *stp;
struct action *ap, *ap2;
struct action *ap, *ap2, *nextap;
struct rule *rp, *rp2, *rbest;
int nbest, n;
int i;
@ -4573,6 +4617,36 @@ void CompressTables(struct lemon *lemp)
}
}
}
/* If a SHIFTREDUCE action specifies a rule that has a single RHS term
** (meaning that the SHIFTREDUCE will land back in the state where it
** started) and if there is no C-code associated with the reduce action,
** then we can go ahead and convert the action to be the same as the
** action for the RHS of the rule.
*/
for(i=0; i<lemp->nstate; i++){
stp = lemp->sorted[i];
for(ap=stp->ap; ap; ap=nextap){
nextap = ap->next;
if( ap->type!=SHIFTREDUCE ) continue;
rp = ap->x.rp;
if( rp->noCode==0 ) continue;
if( rp->nrhs!=1 ) continue;
#if 1
/* Only apply this optimization to non-terminals. It would be OK to
** apply it to terminal symbols too, but that makes the parser tables
** larger. */
if( ap->sp->index<lemp->nterminal ) continue;
#endif
/* If we reach this point, it means the optimization can be applied */
nextap = ap;
for(ap2=stp->ap; ap2 && (ap2==ap || ap2->sp!=rp->lhs); ap2=ap2->next){}
assert( ap2!=0 );
ap->spOpt = ap2->sp;
ap->type = ap2->type;
ap->x = ap2->x;
}
}
}

263
tools/lemon/lempar.c
View File

@ -41,6 +41,7 @@
***************** Begin makeheaders token definitions *************************/
%%
/**************** End makeheaders token definitions ***************************/
/* The next section is a series of control #defines.
** various aspects of the generated parser.
** YYCODETYPE is the data type used to store the integer codes
@ -50,8 +51,6 @@
** YYNOCODE is a number of type YYCODETYPE that is not used for
** any terminal or nonterminal symbol.
** YYFALLBACK If defined, this indicates that one or more tokens
** have fall-back values which should be used if the
** original value of the token will not parse.
** (also known as: "terminal symbols") have fall-back
** values which should be used if the original symbol
** would not parse. This permits keywords to sometimes
@ -126,7 +125,7 @@
**
** N between YY_MIN_REDUCE Reduce by rule N-YY_MIN_REDUCE
** and YY_MAX_REDUCE
**
** N == YY_ERROR_ACTION A syntax error has occurred.
**
** N == YY_ACCEPT_ACTION The parser accepts its input.
@ -135,16 +134,20 @@
** slots in the yy_action[] table.
**
** The action table is constructed as a single large table named yy_action[].
** Given state S and lookahead X, the action is computed as
** Given state S and lookahead X, the action is computed as either:
**
** yy_action[ yy_shift_ofst[S] + X ]
** (A) N = yy_action[ yy_shift_ofst[S] + X ]
** (B) N = yy_default[S]
**
** If the index value yy_shift_ofst[S]+X is out of range or if the value
** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X or if yy_shift_ofst[S]
** is equal to YY_SHIFT_USE_DFLT, it means that the action is not in the table
** and that yy_default[S] should be used instead.
** The (A) formula is preferred. The B formula is used instead if:
** (1) The yy_shift_ofst[S]+X value is out of range, or
** (2) yy_lookahead[yy_shift_ofst[S]+X] is not equal to X, or
** (3) yy_shift_ofst[S] equal YY_SHIFT_USE_DFLT.
** (Implementation note: YY_SHIFT_USE_DFLT is chosen so that
** YY_SHIFT_USE_DFLT+X will be out of range for all possible lookaheads X.
** Hence only tests (1) and (2) need to be evaluated.)
**
** The formula above is for computing the action when the lookahead is
** The formulas above are for computing the action when the lookahead is
** a terminal symbol. If the lookahead is a non-terminal (as occurs after
** a reduce action) then the yy_reduce_ofst[] array is used in place of
** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of
@ -213,9 +216,9 @@ typedef struct yyStackEntry yyStackEntry;
/* The state of the parser is completely contained in an instance of
** the following structure */
struct yyParser {
int yyidx; /* Index of top element in stack */
yyStackEntry *yytos; /* Pointer to top element of the stack */
#ifdef YYTRACKMAXSTACKDEPTH
int yyidxMax; /* Maximum value of yyidx */
int yyhwm; /* High-water mark of the stack */
#endif
#ifndef YYNOERRORRECOVERY
int yyerrcnt; /* Shifts left before out of the error */
@ -224,6 +227,7 @@ struct yyParser {
#if YYSTACKDEPTH<=0
int yystksz; /* Current side of the stack */
yyStackEntry *yystack; /* The parser's stack */
yyStackEntry yystk0; /* First stack entry */
#else
yyStackEntry yystack[YYSTACKDEPTH]; /* The parser's stack */
#endif
@ -278,26 +282,37 @@ static const char *const yyRuleName[] = {
};
#endif /* NDEBUG */
#if YYSTACKDEPTH<=0
/*
** Try to increase the size of the parser stack.
** Try to increase the size of the parser stack. Return the number
** of errors. Return 0 on success.
*/
static void yyGrowStack(yyParser *p){
static int yyGrowStack(yyParser *p){
int newSize;
int idx;
yyStackEntry *pNew;
newSize = p->yystksz*2 + 100;
pNew = realloc(p->yystack, newSize*sizeof(pNew[0]));
idx = p->yytos ? (int)(p->yytos - p->yystack) : 0;
if( p->yystack==&p->yystk0 ){
pNew = malloc(newSize*sizeof(pNew[0]));
if( pNew ) pNew[0] = p->yystk0;
}else{
pNew = realloc(p->yystack, newSize*sizeof(pNew[0]));
}
if( pNew ){
p->yystack = pNew;
p->yystksz = newSize;
p->yytos = &p->yystack[idx];
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sStack grows to %d entries!\n",
yyTracePrompt, p->yystksz);
fprintf(yyTraceFILE,"%sStack grows from %d to %d entries.\n",
yyTracePrompt, p->yystksz, newSize);
}
#endif
p->yystksz = newSize;
}
return pNew==0;
}
#endif
@ -326,15 +341,24 @@ void *ParseAlloc(void *(CDECL *mallocProc)(YYMALLOCARGTYPE)){
yyParser *pParser;
pParser = (yyParser*)(*mallocProc)( (YYMALLOCARGTYPE)sizeof(yyParser) );
if( pParser ){
pParser->yyidx = -1;
#ifdef YYTRACKMAXSTACKDEPTH
pParser->yyidxMax = 0;
pParser->yyhwm = 0;
#endif
#if YYSTACKDEPTH<=0
pParser->yytos = NULL;
pParser->yystack = NULL;
pParser->yystksz = 0;
yyGrowStack(pParser);
if( yyGrowStack(pParser) ){
pParser->yystack = &pParser->yystk0;
pParser->yystksz = 1;
}
#endif
#ifndef YYNOERRORRECOVERY
pParser->yyerrcnt = -1;
#endif
pParser->yytos = pParser->yystack;
pParser->yystack[0].stateno = 0;
pParser->yystack[0].major = 0;
}
return pParser;
}
@ -378,8 +402,9 @@ static void yy_destructor(
*/
static void yy_pop_parser_stack(yyParser *pParser){
yyStackEntry *yytos;
assert( pParser->yyidx>=0 );
yytos = &pParser->yystack[pParser->yyidx--];
assert( pParser->yytos!=0 );
assert( pParser->yytos > pParser->yystack );
yytos = pParser->yytos--;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sPopping %s\n",
@ -390,10 +415,10 @@ static void yy_pop_parser_stack(yyParser *pParser){
yy_destructor(pParser, yytos->major, &yytos->minor);
}
/*
/*
** Deallocate and destroy a parser. Destructors are called for
** all stack elements before shutting the parser down.
*
**
** If the YYPARSEFREENEVERNULL macro exists (for example because it
** is defined in a %include section of the input grammar) then it is
** assumed that the input pointer is never NULL.
@ -406,9 +431,9 @@ void ParseFree(
#ifndef YYPARSEFREENEVERNULL
if( pParser==0 ) return;
#endif
while( pParser->yyidx>=0 ) yy_pop_parser_stack(pParser);
while( pParser->yytos>pParser->yystack ) yy_pop_parser_stack(pParser);
#if YYSTACKDEPTH<=0
free(pParser->yystack);
if( pParser->yystack!=&pParser->yystk0 ) free(pParser->yystack);
#endif
(*freeProc)((void*)pParser);
}
@ -419,7 +444,7 @@ void ParseFree(
#ifdef YYTRACKMAXSTACKDEPTH
int ParseStackPeak(void *p){
yyParser *pParser = (yyParser*)p;
return pParser->yyidxMax;
return pParser->yyhwm;
}
#endif
@ -432,56 +457,53 @@ static unsigned int yy_find_shift_action(
YYCODETYPE iLookAhead /* The look-ahead token */
){
int i;
int stateno = pParser->yystack[pParser->yyidx].stateno;
int stateno = pParser->yytos->stateno;
if( stateno>=YY_MIN_REDUCE ) return stateno;
assert( stateno <= YY_SHIFT_COUNT );
do{
i = yy_shift_ofst[stateno];
if( i==YY_SHIFT_USE_DFLT ) return yy_default[stateno];
assert( iLookAhead!=YYNOCODE );
i += iLookAhead;
if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
if( iLookAhead>0 ){
#ifdef YYFALLBACK
YYCODETYPE iFallback; /* Fallback token */
if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
&& (iFallback = yyFallback[iLookAhead])!=0 ){
YYCODETYPE iFallback; /* Fallback token */
if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
&& (iFallback = yyFallback[iLookAhead])!=0 ){
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
}
#endif
assert( yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
iLookAhead = iFallback;
continue;
if( yyTraceFILE ){
fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
}
#endif
assert( yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
iLookAhead = iFallback;
continue;
}
#endif
#ifdef YYWILDCARD
{
int j = i - iLookAhead + YYWILDCARD;
if(
{
int j = i - iLookAhead + YYWILDCARD;
if(
#if YY_SHIFT_MIN+YYWILDCARD<0
j>=0 &&
j>=0 &&
#endif
#if YY_SHIFT_MAX+YYWILDCARD>=YY_ACTTAB_COUNT
j<YY_ACTTAB_COUNT &&
j<YY_ACTTAB_COUNT &&
#endif
yy_lookahead[j]==YYWILDCARD
){
yy_lookahead[j]==YYWILDCARD && iLookAhead>0
){
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n",
yyTracePrompt, yyTokenName[iLookAhead],
yyTokenName[YYWILDCARD]);
}
#endif /* NDEBUG */
return yy_action[j];
if( yyTraceFILE ){
fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n",
yyTracePrompt, yyTokenName[iLookAhead],
yyTokenName[YYWILDCARD]);
}
#endif /* NDEBUG */
return yy_action[j];
}
#endif /* YYWILDCARD */
}
#endif /* YYWILDCARD */
return yy_default[stateno];
}else{
return yy_action[i];
@ -500,7 +522,7 @@ static int yy_find_reduce_action(
int i;
#ifdef YYERRORSYMBOL
if( stateno>YY_REDUCE_COUNT ){
return yy_default[stateno];
return yy_default[stateno];
}
#else
assert( stateno<=YY_REDUCE_COUNT );
@ -525,15 +547,15 @@ static int yy_find_reduce_action(
*/
static void yyStackOverflow(yyParser *yypParser){
ParseARG_FETCH;
yypParser->yyidx--;
yypParser->yytos--;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt);
}
#endif
while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser);
/* Here code is inserted which will execute if the parser
** stack ever overflows */
** stack every overflows */
/******** Begin %stack_overflow code ******************************************/
%%
/******** End %stack_overflow code ********************************************/
@ -548,11 +570,11 @@ static void yyTraceShift(yyParser *yypParser, int yyNewState){
if( yyTraceFILE ){
if( yyNewState<YYNSTATE ){
fprintf(yyTraceFILE,"%sShift '%s', go to state %d\n",
yyTracePrompt,yyTokenName[yypParser->yystack[yypParser->yyidx].major],
yyTracePrompt,yyTokenName[yypParser->yytos->major],
yyNewState);
}else{
fprintf(yyTraceFILE,"%sShift '%s'\n",
yyTracePrompt,yyTokenName[yypParser->yystack[yypParser->yyidx].major]);
yyTracePrompt,yyTokenName[yypParser->yytos->major]);
}
}
}
@ -570,27 +592,30 @@ static void yy_shift(
ParseTOKENTYPE yyMinor /* The minor token to shift in */
){
yyStackEntry *yytos;
yypParser->yyidx++;
yypParser->yytos++;
#ifdef YYTRACKMAXSTACKDEPTH
if( yypParser->yyidx>yypParser->yyidxMax ){
yypParser->yyidxMax = yypParser->yyidx;
if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){
yypParser->yyhwm++;
assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack) );
}
#endif
#if YYSTACKDEPTH>0
if( yypParser->yyidx>=YYSTACKDEPTH ){
#if YYSTACKDEPTH>0
if( yypParser->yytos>=&yypParser->yystack[YYSTACKDEPTH] ){
yyStackOverflow(yypParser);
return;
}
#else
if( yypParser->yyidx>=yypParser->yystksz ){
yyGrowStack(yypParser);
if( yypParser->yyidx>=yypParser->yystksz ){
if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz] ){
if( yyGrowStack(yypParser) ){
yyStackOverflow(yypParser);
return;
}
}
#endif
yytos = &yypParser->yystack[yypParser->yyidx];
if( yyNewState > YY_MAX_SHIFT ){
yyNewState += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
}
yytos = yypParser->yytos;
yytos->stateno = (YYACTIONTYPE)yyNewState;
yytos->major = (YYCODETYPE)yyMajor;
yytos->minor.yy0 = yyMinor;
@ -622,7 +647,7 @@ static void yy_reduce(
yyStackEntry *yymsp; /* The top of the parser's stack */
int yysize; /* Amount to pop the stack */
ParseARG_FETCH;
yymsp = &yypParser->yystack[yypParser->yyidx];
yymsp = yypParser->yytos;
#ifndef NDEBUG
if( yyTraceFILE && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){
yysize = yyRuleInfo[yyruleno].nrhs;
@ -636,22 +661,23 @@ static void yy_reduce(
** enough on the stack to push the LHS value */
if( yyRuleInfo[yyruleno].nrhs==0 ){
#ifdef YYTRACKMAXSTACKDEPTH
if( yypParser->yyidx>yypParser->yyidxMax ){
yypParser->yyidxMax = yypParser->yyidx;
if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){
yypParser->yyhwm++;
assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack));
}
#endif
#if YYSTACKDEPTH>0
if( yypParser->yyidx>=YYSTACKDEPTH-1 ){
#if YYSTACKDEPTH>0
if( yypParser->yytos>=&yypParser->yystack[YYSTACKDEPTH-1] ){
yyStackOverflow(yypParser);
return;
}
#else
if( yypParser->yyidx>=yypParser->yystksz-1 ){
yyGrowStack(yypParser);
if( yypParser->yyidx>=yypParser->yystksz-1 ){
if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){
if( yyGrowStack(yypParser) ){
yyStackOverflow(yypParser);
return;
}
yymsp = yypParser->yytos;
}
#endif
}
@ -674,15 +700,17 @@ static void yy_reduce(
yysize = yyRuleInfo[yyruleno].nrhs;
yyact = yy_find_reduce_action(yymsp[-yysize].stateno,(YYCODETYPE)yygoto);
if( yyact <= YY_MAX_SHIFTREDUCE ){
if( yyact>YY_MAX_SHIFT ) yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
yypParser->yyidx -= yysize - 1;
if( yyact>YY_MAX_SHIFT ){
yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
}
yymsp -= yysize-1;
yypParser->yytos = yymsp;
yymsp->stateno = (YYACTIONTYPE)yyact;
yymsp->major = (YYCODETYPE)yygoto;
yyTraceShift(yypParser, yyact);
}else{
assert( yyact == YY_ACCEPT_ACTION );
yypParser->yyidx -= yysize;
yypParser->yytos -= yysize;
yy_accept(yypParser);
}
}
@ -700,7 +728,7 @@ static void yy_parse_failed(
fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt);
}
#endif
while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser);
/* Here code is inserted which will be executed whenever the
** parser fails */
/************ Begin %parse_failure code ***************************************/
@ -738,7 +766,10 @@ static void yy_accept(
fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt);
}
#endif
while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
assert( yypParser->yytos==yypParser->yystack );
/* Here code is inserted which will be executed whenever the
** parser accepts */
/*********** Begin %parse_accept code *****************************************/
@ -782,28 +813,8 @@ void Parse(
#endif
yyParser *yypParser; /* The parser */
/* (re)initialize the parser, if necessary */
yypParser = (yyParser*)yyp;
if( yypParser->yyidx<0 ){
#if YYSTACKDEPTH<=0
if( yypParser->yystksz <=0 ){
yyStackOverflow(yypParser);
return;
}
#endif
yypParser->yyidx = 0;
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
yypParser->yystack[0].stateno = 0;
yypParser->yystack[0].major = 0;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sInitialize. Empty stack. State 0\n",
yyTracePrompt);
}
#endif
}
assert( yypParser->yytos!=0 );
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
yyendofinput = (yymajor==0);
#endif
@ -818,7 +829,6 @@ void Parse(
do{
yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor);
if( yyact <= YY_MAX_SHIFTREDUCE ){
if( yyact > YY_MAX_SHIFT ) yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
yy_shift(yypParser,yyact,yymajor,yyminor);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt--;
@ -827,11 +837,11 @@ void Parse(
}else if( yyact <= YY_MAX_REDUCE ){
yy_reduce(yypParser,yyact-YY_MIN_REDUCE);
}else{
assert( yyact == YY_ERROR_ACTION );
yyminorunion.yy0 = yyminor;
#ifdef YYERRORSYMBOL
int yymx;
#endif
assert( yyact == YY_ERROR_ACTION );
yyminorunion.yy0 = yyminor;
#ifndef NDEBUG
if( yyTraceFILE ){
fprintf(yyTraceFILE,"%sSyntax Error!\n",yyTracePrompt);
@ -840,7 +850,7 @@ void Parse(
#ifdef YYERRORSYMBOL
/* A syntax error has occurred.
** The response to an error depends upon whether or not the
** grammar defines an error token "ERROR".
** grammar defines an error token "ERROR".
**
** This is what we do if the grammar does define ERROR:
**
@ -860,7 +870,7 @@ void Parse(
if( yypParser->yyerrcnt<0 ){
yy_syntax_error(yypParser,yymajor,yyminor);
}
yymx = yypParser->yystack[yypParser->yyidx].major;
yymx = yypParser->yytos->major;
if( yymx==YYERRORSYMBOL || yyerrorhit ){
#ifndef NDEBUG
if( yyTraceFILE ){
@ -871,18 +881,20 @@ void Parse(
yy_destructor(yypParser, (YYCODETYPE)yymajor, &yyminorunion);
yymajor = YYNOCODE;
}else{
while(
yypParser->yyidx >= 0 &&
yymx != YYERRORSYMBOL &&
(yyact = yy_find_reduce_action(
yypParser->yystack[yypParser->yyidx].stateno,
while( yypParser->yytos >= yypParser->yystack
&& yymx != YYERRORSYMBOL
&& (yyact = yy_find_reduce_action(
yypParser->yytos->stateno,
YYERRORSYMBOL)) >= YY_MIN_REDUCE
){
yy_pop_parser_stack(yypParser);
}
if( yypParser->yyidx < 0 || yymajor==0 ){
if( yypParser->yytos < yypParser->yystack || yymajor==0 ){
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
yy_parse_failed(yypParser);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
yymajor = YYNOCODE;
}else if( yymx!=YYERRORSYMBOL ){
yy_shift(yypParser,yyact,YYERRORSYMBOL,yyminor);
@ -901,7 +913,7 @@ void Parse(
yy_syntax_error(yypParser,yymajor, yyminor);
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
yymajor = YYNOCODE;
#else /* YYERRORSYMBOL is not defined */
/* This is what we do if the grammar does not define ERROR:
**
@ -919,18 +931,23 @@ void Parse(
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
if( yyendofinput ){
yy_parse_failed(yypParser);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt = -1;
#endif
}
yymajor = YYNOCODE;
#endif
}
}while( yymajor!=YYNOCODE && yypParser->yyidx>=0 );
}while( yymajor!=YYNOCODE && yypParser->yytos>yypParser->yystack );
#ifndef NDEBUG
if( yyTraceFILE ){
int i;
yyStackEntry *i;
char cDiv = '[';
fprintf(yyTraceFILE,"%sReturn. Stack=",yyTracePrompt);
for(i=1; i<=yypParser->yyidx; i++)
fprintf(yyTraceFILE,"%c%s", i==1 ? '[' : ' ',
yyTokenName[yypParser->yystack[i].major]);
for(i=&yypParser->yystack[1]; i<=yypParser->yytos; i++){
fprintf(yyTraceFILE,"%c%s", cDiv, yyTokenName[i->major]);
cDiv = ' ';
}
fprintf(yyTraceFILE,"]\n");
}
#endif