static Object
range(CCEparsestate* state, Object sfirst, Object sstride, Object slast)
{
CCEslice* slice = (CCEslice*)ccecreate(CES_SLICE);
unsigned long first,stride,last;
/* Note: that incoming arguments are strings; we must convert to size_t;
but we do know they are legal integers or NULL */
sscanf((char*)sfirst,"%lu",&first); /* always defined */
if(slast != NULL)
sscanf((char*)slast,"%lu",&last);
else
last = first;
if(sstride != NULL)
sscanf((char*)sstride,"%lu",&stride);
else
stride = 1; /* default */
if(stride == 0)
cceerror(state,"Illegal index for range stride");
if(last < first)
cceerror(state,"Illegal index for range last index");
slice->first = first;
slice->stride = stride;
slice->stop = last + 1;
slice->length = slice->stop - slice->first;
slice->count = slice->length / slice->stride;
#ifdef DEBUG
fprintf(stderr," ce.slice: %s\n",
ccetostring((CCEnode*)slice));
#endif
return slice;
}
static CCEparsestate*
ce_parse_init(char* input, CCEconstraint* constraint)
{
CCEparsestate* state = NULL;
if(input==NULL) {
cceerror(state,"ce_parse_init: no input buffer");
} else {
state = (CCEparsestate*)calloc(1,sizeof(CCEparsestate));
if(state==NULL) return (CCEparsestate*)NULL;
state->errorbuf[0] = '\0';
state->errorcode = 0;
ccelexinit(input,&state->lexstate);
state->constraint = constraint;
}
return state;
}
static int
ccelex(YYSTYPE* lvalp, CCEparsestate* state)
{
CCElexstate* lexstate = state->lexstate;
int token;
int c;
int len;
char* p=lexstate->next;
token = 0;
ncbytesclear(lexstate->yytext);
ncbytesnull(lexstate->yytext);
p=lexstate->next;
while(token == 0 && (c=*p)) {
if(c <= ' ' || c >= '\177') {p++; continue;}
if(c == '"') {
int more = 1;
/* We have a SCAN_STRINGCONST */
while(more && (c=*(++p))) {
switch (c) {
case '"': p++; more=0; break;
case '\\':
c=*(++p);
switch (c) {
case 'r': c = '\r'; break;
case 'n': c = '\n'; break;
case 'f': c = '\f'; break;
case 't': c = '\t'; break;
case 'x': {
int d1,d2;
c = '?';
++p;
d1 = tohex(*p++);
if(d1 < 0) {
cceerror(state,"Illegal \\xDD in SCAN_STRING");
} else {
d2 = tohex(*p++);
if(d2 < 0) {
cceerror(state,"Illegal \\xDD in SCAN_STRING");
} else {
c=(((unsigned int)d1)<<4) | (unsigned int)d2;
}
}
} break;
default: break;
}
break;
default: break;
}
ceaddyytext(lexstate,c);
}
token=SCAN_STRINGCONST;
} else if(strchr(numchars1,c) != NULL) {
/* we might have a SCAN_NUMBERCONST */
int isnumber = 0;
char* yytext;
char* endpoint;
ceaddyytext(lexstate,c);
for(p++;(c=*p);p++) {
if(strchr(numcharsn,c) == NULL) break;
ceaddyytext(lexstate,c);
}
/* See if this is a number */
ncbytesnull(lexstate->yytext);
yytext = ncbytescontents(lexstate->yytext);
(void)strtoll(yytext,&endpoint,10);
if(*yytext != '\0' && *endpoint == '\0')
isnumber = 1;
else {
(void)strtod(yytext,&endpoint);
if(*yytext != '\0' && *endpoint == '\0')
isnumber = 1; /* maybe */
}
/* A number followed by an id char is assumed to just be
a funny id */
if(isnumber && (*p == '\0' || strchr(wordcharsn,*p) == NULL)) {
token = SCAN_NUMBERCONST;
} else {
/* Now, if the funny word has a "." in it,
we have to back up to that dot */
char* dotpoint = strchr(yytext,'.');
if(dotpoint != NULL) {
p = dotpoint;
*dotpoint = '\0';
}
token = SCAN_WORD;
}
} else if(strchr(wordchars1,c) != NULL) {
/* we have a SCAN_WORD */
ceaddyytext(lexstate,c);
for(p++;(c=*p);p++) {
if(strchr(wordcharsn,c) == NULL) break;
ceaddyytext(lexstate,c);
}
token=SCAN_WORD;
} else {
/* we have a single char token */
token = c;
ceaddyytext(lexstate,c);
p++;
}
}
lexstate->next = p;
len = ncbyteslength(lexstate->yytext);
if(len > MAX_TOKEN_LENGTH) len = MAX_TOKEN_LENGTH;
strncpy(lexstate->lasttokentext,ncbytescontents(lexstate->yytext),len);
lexstate->lasttokentext[len] = '\0';
lexstate->lasttoken = token;
#ifdef PARSEDEBUG
if(ccedebug) dumptoken(lexstate);
#endif
/*Put return value onto Bison stack*/
if(ncbyteslength(lexstate->yytext) == 0)
*lvalp = NULL;
else {
*lvalp = ncbytesdup(lexstate->yytext);
nclistpush(lexstate->reclaim,(ncelem)*lvalp);
}
return token;
}
