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parser.y
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parser.y
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%{
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
%}
/*
* Copyright 2005 Sun Microsystems, Inc.
* All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
%{
/* from OpenSolaris "parser.y 6.15 05/06/10 SMI" */
/*
* Portions Copyright (c) 2005 Gunnar Ritter, Freiburg i. Br., Germany
*
* Sccsid @(#)parser.y 1.8 (gritter) 11/26/05
*/
void yyerror(char *);
extern int yylex(void);
#include <ctype.h>
#include <wchar.h>
#include <limits.h>
#include <string.h>
#include <inttypes.h>
#ifndef __sun
#define wcsetno(c) 0
#endif
%}
/* parser.y */
/* XCU4: add XSCON: %x exclusive start token */
/* XCU4: add ARRAY: %a yytext is char array */
/* XCU4: add POINTER: %p yytext is a pointer to char */
%token CHAR CCL NCCL STR DELIM SCON ITER NEWE NULLS XSCON ARRAY POINTER
%nonassoc ARRAY POINTER
%left XSCON SCON NEWE
%left '/'
/*
* XCU4: lower the precedence of $ and ^ to less than the or operator
* per Spec. 1170
*/
%left '$' '^'
%left '|'
%left CHAR CCL NCCL '(' '.' STR NULLS
%left ITER
%left CAT
%left '*' '+' '?'
%{
#include "ldefs.h"
#define YYSTYPE union _yystype_
union _yystype_
{
int i;
CHR *cp;
};
int peekon = 0; /* need this to check if "^" came in a definition section */
int i;
int j,k;
int g;
CHR *p;
static wchar_t L_PctUpT[]= {'%', 'T', 0};
static wchar_t L_PctLoT[]= {'%', 't', 0};
static wchar_t L_PctCbr[]= {'%', '}', 0};
%}
%%
acc : lexinput
{
# ifdef DEBUG
if(debug) sect2dump();
# endif
}
;
lexinput: defns delim prods end
| defns delim end
{
if(!funcflag)phead2();
funcflag = TRUE;
}
| error
{
# ifdef DEBUG
if(debug) {
sect1dump();
sect2dump();
}
# endif
fatal = 0;
n_error++;
error("Illegal definition");
fatal = 1;
}
;
end: delim | ;
defns: defns STR STR
{ scopy($2.cp,dp);
def[dptr] = dp;
dp += slength($2.cp) + 1;
scopy($3.cp,dp);
subs[dptr++] = dp;
if(dptr >= DEFSIZE)
error("Too many definitions");
dp += slength($3.cp) + 1;
if(dp >= dchar+DEFCHAR)
error("Definitions too long");
subs[dptr]=def[dptr]=0; /* for lookup - require ending null */
}
|
;
delim: DELIM
{
# ifdef DEBUG
if(sect == DEFSECTION && debug) sect1dump();
# endif
sect++;
}
;
prods: prods pr
{ $$.i = mn2(RNEWE,$1.i,$2.i);
}
| pr
{ $$.i = $1.i;}
;
pr: r NEWE
{
if(divflg == TRUE)
i = mn1(S1FINAL,casecount);
else i = mn1(FINAL,casecount);
$$.i = mn2(RCAT,$1.i,i);
divflg = FALSE;
if((++casecount)>NACTIONS)
error("Too many (>%d) pattern-action rules.", NACTIONS);
}
| error NEWE
{
# ifdef DEBUG
if(debug) sect2dump();
# endif
fatal = 0;
yyline--;
n_error++;
error("Illegal rule");
fatal = 1;
yyline++;
}
r: CHAR
{ $$.i = mn0($1.i); }
| STR
{
p = (CHR *)$1.cp;
i = mn0((unsigned)(*p++));
while(*p)
i = mn2(RSTR,i,(unsigned)(*p++));
$$.i = i;
}
| '.'
{
$$.i = mn0(DOT);
}
| CCL
{ $$.i = mn1(RCCL,(intptr_t)$1.cp); }
| NCCL
{ $$.i = mn1(RNCCL,(intptr_t)$1.cp); }
| r '*'
{ $$.i = mn1(STAR,$1.i); }
| r '+'
{ $$.i = mn1(PLUS,$1.i); }
| r '?'
{ $$.i = mn1(QUEST,$1.i); }
| r '|' r
{ $$.i = mn2(BAR,$1.i,$3.i); }
| r r %prec CAT
{ $$.i = mn2(RCAT,$1.i,$2.i); }
| r '/' r
{ if(!divflg){
j = mn1(S2FINAL,-casecount);
i = mn2(RCAT,$1.i,j);
$$.i = mn2(DIV,i,$3.i);
}
else {
$$.i = mn2(RCAT,$1.i,$3.i);
error("illegal extra slash");
}
divflg = TRUE;
}
| r ITER ',' ITER '}'
{ if($2.i > $4.i){
i = $2.i;
$2.i = $4.i;
$4.i = i;
}
if($4.i <= 0)
error("iteration range must be positive");
else {
j = $1.i;
for(k = 2; k<=$2.i;k++)
j = mn2(RCAT,j,dupl($1.i));
for(i = $2.i+1; i<=$4.i; i++){
g = dupl($1.i);
for(k=2;k<=i;k++)
g = mn2(RCAT,g,dupl($1.i));
j = mn2(BAR,j,g);
}
$$.i = j;
}
}
| r ITER '}'
{
if($2.i < 0)error("can't have negative iteration");
else if($2.i == 0) $$.i = mn0(RNULLS);
else {
j = $1.i;
for(k=2;k<=$2.i;k++)
j = mn2(RCAT,j,dupl($1.i));
$$.i = j;
}
}
| r ITER ',' '}'
{
/* from n to infinity */
if($2.i < 0)error("can't have negative iteration");
else if($2.i == 0) $$.i = mn1(STAR,$1.i);
else if($2.i == 1)$$.i = mn1(PLUS,$1.i);
else { /* >= 2 iterations minimum */
j = $1.i;
for(k=2;k<$2.i;k++)
j = mn2(RCAT,j,dupl($1.i));
k = mn1(PLUS,dupl($1.i));
$$.i = mn2(RCAT,j,k);
}
}
| SCON r
{ $$.i = mn2(RSCON,$2.i,(intptr_t)$1.cp); }
/* XCU4: add XSCON */
| XSCON r
{ $$.i = mn2(RXSCON,$2.i,(intptr_t)$1.cp); }
| '^' r
{ $$.i = mn1(CARAT,$2.i); }
| r '$'
{ i = mn0('\n');
if(!divflg){
j = mn1(S2FINAL,-casecount);
k = mn2(RCAT,$1.i,j);
$$.i = mn2(DIV,k,i);
}
else $$.i = mn2(RCAT,$1.i,i);
divflg = TRUE;
}
| '(' r ')'
{ $$.i = $2.i; }
| NULLS
{ $$.i = mn0(RNULLS); }
/* XCU4: add ARRAY and POINTER */
| ARRAY
{ isArray = 1; };
| POINTER
{ isArray = 0; };
;
%%
/* converts a pure ascii wchar_t* into a C string, on word
boundaries (whitespace). returns -1 on error, else
number of bytes converted.
buf size needs to be bigger than MB_LEN_MAX to store at
least one char and trailing zero terminator.
error: buf size insufficient, or non-ascii/bogus wchar_t* */
static int wcwordtos(CHR *ws, char *buf, size_t buflen) {
int ret = 0, n;
while(1) {
if(buflen <= MB_LEN_MAX) return -1;
if(iswspace(ws[ret]) || ws[ret] == 0) {
*buf = 0;
return ret;
}
n = wctomb(buf, ws[ret]);
if(n != 1) return -1;
++ret;
++buf;
--buflen;
}
/* should never get here */
return -1;
}
static void flex_noyywrap(void) {
fprintf(fout, "# define yywrap() 1\n");
}
static void parse_flex_opts(CHR *p) {
static const struct {
const char name[9];
void(*action)(void);
} flex_opts[] = {
{ "noyywrap", flex_noyywrap},
{ {0}, 0 }
};
while(1) {
char buf[60+MB_LEN_MAX];
int len, i;
while(*p && iswspace(*p)) p++;
if(!*p) return;
len = wcwordtos(p, buf, sizeof buf);
if(len < 0) error("invalid option directive");
for(i = 0; flex_opts[i].action; ++i) {
if(!strcmp(flex_opts[i].name, buf))
{ flex_opts[i].action(); break; }
}
if(!flex_opts[i].action)
warning("ignoring flex option '%s'", buf);
p += len;
}
}
int
yylex(void)
{
CHR *p;
int i;
CHR *xp;
int lex_startcond_lookupval;
CHR *t, c;
int n, j = 0, k, x;
CHR ch;
static int sectbegin;
static CHR token[TOKENSIZE];
static int iter;
int ccs; /* Current CodeSet. */
CHR *ccp;
int exclusive_flag; /* XCU4: exclusive start flag */
# ifdef DEBUG
yylval.i = 0;
# endif
if(sect == DEFSECTION) { /* definitions section */
while(!eof) {
if(prev == '\n'){ /* next char is at beginning of line */
getl(p=buf);
switch(*p){
case '%':
switch(c= *(p+1)){
case '%':
if(scomp(p, (CHR *)"%%")) {
p++;
while(*(++p))
if(!space(*p)) {
warning("invalid string following %%%% be ignored");
break;
}
}
lgate();
if(!ratfor)fprintf(fout,"# ");
fprintf(fout,"define YYNEWLINE %d\n",ctable['\n']);
if(!ratfor) {
fprintf(fout,"int yylex(){\nint nstr = 0; extern int yyprevious;\n");
}
sectbegin = TRUE;
i = treesize*(sizeof(*name)+sizeof(*left)+
sizeof(*right)+sizeof(*nullstr)+sizeof(*parent))+ALITTLEEXTRA;
p = myalloc(i,1);
if(p == NULL)
error("Too little core for parse tree");
free(p);
name = myalloc(treesize,sizeof(*name));
left = myalloc(treesize,sizeof(*left));
right = myalloc(treesize,sizeof(*right));
nullstr = myalloc(treesize,sizeof(*nullstr));
parent = myalloc(treesize,sizeof(*parent));
if(name == 0 || left == 0 || right == 0 || parent == 0 || nullstr == 0)
error("Too little core for parse tree");
return(freturn(DELIM));
case 'p': case 'P':
/* %p or %pointer */
if ((*(p+2) == 'o') ||
(*(p+2) == 'O')) {
if(lgatflg)
error("Too late for %%pointer");
while(*p && !iswspace(*p))
p++;
isArray = 0;
continue;
}
/* has overridden number of positions */
p += 2;
maxpos = siconv(p);
if (maxpos<=0)error("illegal position number");
# ifdef DEBUG
if (debug) printf("positions (%%p) now %d\n",maxpos);
# endif
if(report == 2)report = 1;
continue;
case 'n': case 'N': /* has overridden number of states */
p += 2;
nstates = siconv(p);
if(nstates<=0)error("illegal state number");
# ifdef DEBUG
if(debug)printf( " no. states (%%n) now %d\n",nstates);
# endif
if(report == 2)report = 1;
continue;
case 'e': case 'E': /* has overridden number of tree nodes */
p += 2;
treesize = siconv(p);
if(treesize<=0)error("illegal number of parse tree nodes");
# ifdef DEBUG
if (debug) printf("treesize (%%e) now %d\n",treesize);
# endif
if(report == 2)report = 1;
continue;
case 'o': case 'O':
if ((*(p+2) == 'p') && (*(p+3) == 't')) {
while(*p && !iswspace(*p)) p++;
parse_flex_opts(p);
continue;
}
p += 2;
outsize = siconv(p);
if(outsize<=0)error("illegal size of output array");
if (report ==2) report=1;
continue;
case 'a': case 'A':
/* %a or %array */
if ((*(p+2) == 'r') ||
(*(p+2) == 'R')) {
if(lgatflg)
error("Too late for %%array");
while(*p && !iswspace(*p))
p++;
isArray = 1;
continue;
}
/* has overridden number of transitions */
p += 2;
ntrans = siconv(p);
if(ntrans<=0)error("illegal translation number");
# ifdef DEBUG
if (debug)printf("N. trans (%%a) now %d\n",ntrans);
# endif
if(report == 2)report = 1;
continue;
case 'k': case 'K': /* overriden packed char classes */
p += 2;
free(pchar);
pchlen = siconv(p);
if(pchlen<=0)error("illegal number of packed character class");
# ifdef DEBUG
if (debug) printf( "Size classes (%%k) now %d\n",pchlen);
# endif
pchar=pcptr=myalloc(pchlen, sizeof(*pchar));
if (report==2) report=1;
continue;
case 't': case 'T': /* character set specifier */
if(handleeuc)
error("\
Character table (%t) is supported only in ASCII compatibility mode.\n");
ZCH = wcstol(p+2, NULL, 10);
if (ZCH < NCH) ZCH = NCH;
if (ZCH > 2*NCH) error("ch table needs redeclaration");
chset = TRUE;
for(i = 0; i<ZCH; i++)
ctable[i] = 0;
while(getl(p) && scomp(p,L_PctUpT) != 0 && scomp(p,L_PctLoT) != 0){
if((n = siconv(p)) <= 0 || n > ZCH){
error("Character value %d out of range",n);
continue;
}
while(digit(*p)) p++;
if(!iswspace(*p)) error("bad translation format");
while(iswspace(*p)) p++;
t = p;
while(*t){
c = ctrans(&t);
if(ctable[(unsigned)c]){
if (iswprint(c))
warning("Character '%lc' used twice",c);
else
error("Chararter %o used twice",c);
}
else ctable[(unsigned)c] = n;
t++;
}
p = buf;
}
{
char chused[2*NCH]; int kr;
for(i=0; i<ZCH; i++)
chused[i]=0;
for(i=0; i<NCH; i++)
chused[ctable[i]]=1;
for(kr=i=1; i<NCH; i++)
if (ctable[i]==0)
{
while (chused[kr] == 0)
kr++;
ctable[i]=kr;
chused[kr]=1;
}
}
lgate();
continue;
case 'r': case 'R':
#ifdef WITH_RATFOR
c = 'r';
/* FALLTHRU */
#else
error("ratfor support not compiled in");
break;
#endif
case 'c': case 'C':
if(lgatflg)
error("Too late for language specifier");
#ifdef WITH_RATFOR
ratfor = (c == 'r');
#endif
continue;
case '{':
lgate();
while(getl(p) && scomp(p, L_PctCbr) != 0)
if(p[0]=='/' && p[1]=='*')
cpycom(p);
else
fprintf(fout,"%ls\n",p);
if(p[0] == '%') continue;
if (*p) error("EOF before %%%%");
else error("EOF before %%}");
break;
case 'x': case 'X': /* XCU4: exclusive start conditions */
exclusive_flag = 1;
goto start;
case 's': case 'S': /* start conditions */
exclusive_flag = 0;
start:
lgate();
while(*p && !iswspace(*p) && ((*p) != (wchar_t)',')) p++;
n = TRUE;
while(n){
while(*p && (iswspace(*p) || ((*p) == (wchar_t)','))) p++;
t = p;
while(*p && !iswspace(*p) && ((*p) != (wchar_t)',')) {
if(!isascii(*p))
error("None-ASCII characters in start condition.");
p++;
}
if(!*p) n = FALSE;
*p++ = 0;
if (*t == 0) continue;
i = sptr*2;
if(!ratfor)fprintf(fout,"# ");
fprintf(fout,"define %ls %d\n",t,i);
scopy(t,sp);
sname[sptr] = sp;
/* XCU4: save exclusive flag with start name */
exclusive[sptr++] = exclusive_flag;
sname[sptr] = 0; /* required by lookup */
if(sptr >= STARTSIZE)
error("Too many start conditions");
sp += slength(sp) + 1;
if(sp >= schar+STARTCHAR)
error("Start conditions too long");
}
continue;
default:
error("Invalid request %s",p);
continue;
} /* end of switch after seeing '%' */
break;
case ' ': case '\t': /* must be code */
lgate();
if( p[1]=='/' && p[2]=='*' ) cpycom(p);
else fprintf(fout, "%ls\n",p);
continue;
case '/': /* look for comments */
lgate();
if((*(p+1))=='*') cpycom(p);
/* FALLTHRU */
default: /* definition */
while(*p && !iswspace(*p)) p++;
if(*p == 0)
continue;
prev = *p;
*p = 0;
bptr = p+1;
yylval.cp = (CHR *)buf;
if(digit(buf[0]))
warning("Substitution strings may not begin with digits");
return(freturn(STR));
}
} else { /* still sect 1, but prev != '\n' */
p = bptr;
while(*p && iswspace(*p)) p++;
if(*p == 0)
warning("No translation given - null string assumed");
scopy(p,token);
yylval.cp = (CHR *)token;
prev = '\n';
return(freturn(STR));
}
}
error("unexpected EOF before %%%%");
/* end of section one processing */
} else if(sect == RULESECTION){ /* rules and actions */
lgate();
while(!eof){
static int first_test=TRUE, first_value;
static int reverse=FALSE;
switch(c=gch()){
case '\0':
if(n_error)error_tail();
return(freturn(0));
case '\n':
if(prev == '\n') continue;
x = NEWE;
break;
case ' ':
case '\t':
if(prev == '\n') copy_line = TRUE;
if(sectbegin == TRUE){
cpyact();
copy_line = FALSE;
while((c=gch()) && c != '\n');
continue;
}
if(!funcflag)phead2();
funcflag = TRUE;
if(ratfor)fprintf(fout,"%d\n",30000+casecount);
else fprintf(fout,"case %d:\n",casecount);
if(cpyact()){
if(ratfor)fprintf(fout,"goto 30997\n");
else fprintf(fout,"break;\n");
}
while((c=gch()) && c != '\n') {
if (c=='/') {
if((c=gch())=='*') {
c=gch();
while(c !=EOF) {
while (c=='*')
if ((c=gch()) == '/') goto w_loop;
c = gch();
}
error("EOF inside comment");
} else
warning("undefined string");
} else if (c=='}')
error("illegal extra \"}\"");
w_loop: ;
}
/* while ((c=gch())== ' ' || c == '\t') ; */
/* if (!space(c)) error("undefined action string"); */
if(peek == ' ' || peek == '\t' || sectbegin == TRUE){
fatal = 0;
n_error++;
error("executable statements should occur right after %%%%");
fatal = 1;
continue;
}
x = NEWE;
break;
case '%':
if(prev != '\n') goto character;
if(peek == '{'){ /* included code */
getl(buf);
while(!eof&& getl(buf) && scomp(L_PctCbr,buf)!=0)
if(buf[0]=='/' && buf[1]=='*')
cpycom(buf);
else
fprintf(fout,"%ls\n",buf);
continue;
}
if(peek == '%'){
c = gch();
c = gch();
x = DELIM;
break;
}
goto character;
case '|':
if(peek == ' ' || peek == '\t' || peek == '\n'){
if(ratfor)fprintf(fout,"%d\n",30000+casecount++);
else fprintf(fout,"case %d:\n",casecount++);
continue;
}
x = '|';
break;
case '$':
if(peek == '\n' || peek == ' ' || peek == '\t' || peek == '|' || peek == '/'){
x = c;
break;
}
goto character;
case '^':
if(peekon && (prev == '}')){
x = c;
break;
}
if(prev != '\n' && scon != TRUE) goto character;
/* valid only at line begin */
x = c;
break;
case '?':
case '+':
case '*':
if(prev == '\n' ) {
fatal = 0;
n_error++;
error("illegal operator -- %c",c);
fatal = 1;
}
/* FALLTHRU */
case '.':
case '(':
case ')':
case ',':
case '/':
x = c;
break;
case '}':
iter = FALSE;
x = c;
break;
case '{': /* either iteration or definition */
if(digit(c=gch())){ /* iteration */
iter = TRUE;
if(prev=='{') first_test = TRUE;
ieval:
i = 0;
while(digit(c)){
token[i++] = c;
c = gch();
}
token[i] = 0;
yylval.i = siconv(token);
if(first_test) {
first_test = FALSE;
first_value = yylval.i;
} else
if(first_value>yylval.i)warning("the values between braces are reversed");
ch = c;
munput('c',&ch);
x = ITER;
break;
}
else { /* definition */
i = 0;
while(c && c!='}'){
token[i++] = c;
if(i >= TOKENSIZE)
error("definition too long");
c = gch();
}
token[i] = 0;
i = lookup(token,def);
if(i < 0)
error("definition %ls not found",token);
else
munput('s',(CHR *)(subs[i]));
if (peek == '^')
peekon = 1;
continue;
}
case '<': /* start condition ? */
if(prev != '\n') /* not at line begin, not start */
goto character;
t = slptr;
do {
i = 0;
if(!isascii(c = gch()))
error("Non-ASCII characters in start condition.");
while(c != ',' && c && c != '>'){
token[i++] = c;
if(i >= TOKENSIZE)
error("string name too long");
if(!isascii(c = gch()))
error("None-ASCII characters in start condition.");
}
token[i] = 0;
if(i == 0)
goto character;
i = lookup(token,sname);
lex_startcond_lookupval = i;
if(i < 0 && token[0] == '*' && token[1] == 0) {
i = 0;
x = SCON;
while(sname[i]) {
if (exclusive[i]) x = XSCON;
*slptr++ = ++i;
}
} else if(i < 0) {
fatal = 0;
n_error++;
error("undefined start condition %ls",token);
fatal = 1;
continue;
} else *slptr++ = i+1;
} while(c && c != '>');
*slptr++ = 0;
/* check if previous value re-usable */
for (xp=slist; xp<t; )
{
if (scomp(xp, t)==0)
break;
while (*xp++);
}
if (xp<t)
{
/* re-use previous pointer to string */
slptr=t;
t=xp;
}
if(slptr > slist+STARTSIZE) /* note not packed */
error("Too many start conditions used");
yylval.cp = (CHR *)t;
/* XCU4: add XSCON */
if (lex_startcond_lookupval >= 0) {
if (exclusive[lex_startcond_lookupval])
x = XSCON;
else
x = SCON;
}
break;
case '"':
i = 0;
while((c=gch()) && c != '"' && c != '\n'){
if(c == '\\') c = usescape(c=gch());
remch(c);
token[i++] = c;
if(i >= TOKENSIZE){
warning("String too long");
i = TOKENSIZE-1;
break;
}
}
if(c == '\n') {
yyline--;
warning("Non-terminated string");
yyline++;
}
token[i] = 0;
if(i == 0)x = NULLS;
else if(i == 1){
yylval.i = (unsigned)token[0];
x = CHAR;
}
else {
yylval.cp = (CHR *)token;
x = STR;
}
break;
case '[':
reverse = FALSE;
x = CCL;
if((c = gch()) == '^'){
x = NCCL;
reverse = TRUE;
c = gch();
}
i = 0;
while(c != ']' && c){
static int light=TRUE, ESCAPE=FALSE;
if(c == '-' && prev == '^' && reverse){
symbol[(unsigned)c] = 1;
c = gch();
continue;
}
if(c == '\\') {
c = usescape(c=gch());
ESCAPE = TRUE;
}
if(c=='-' && !ESCAPE && prev!='[' && peek!=']'){
/* range specified */
if (light) {
c = gch();
if(c == '\\')
c=usescape(c=gch());
remch(c);
k = c;
ccs=wcsetno(k);
if(wcsetno(j)!=ccs)
error("\
Character range specified between different codesets.");
if((unsigned)j > (unsigned)k) {
n = j;
j = k;
k = n;
}
if(!handleeuc)
if(!(('A'<=j && k<='Z') ||
('a'<=j && k<='z') ||
('0'<=j && k<='9')))
warning("Non-portable Character Class");
token[i++] = RANGE;
token[i++] = j;
token[i++] = k;
light = FALSE;
} else {
error("unmatched hyphen");
if(symbol[(unsigned)c])warning("\"%c\" redefined inside brackets",c);
else symbol[(unsigned)c] = 1;
}
ESCAPE = FALSE;
} else {
j = c;
remch(c);
token[i++] = c; /* Remember whatever.*/
light = TRUE;
ESCAPE = FALSE;
}
c = gch();
}
/* try to pack ccl's */
token[i] = 0;
ccp = ccl;
while (ccp < ccptr && scomp(token, ccp) != 0) ccp++;
if (ccp < ccptr) { /* found in ccl */
yylval.cp = ccp;
} else { /* not in ccl, add it */
scopy(token,ccptr);
yylval.cp = ccptr;
ccptr += slength(token) + 1;
if(ccptr >= ccl+CCLSIZE)
error("Too many large character classes");
}
break;
case '\\':
c = usescape(c=gch());
default:
character:
if(iter){ /* second part of an iteration */
iter = FALSE;
if('0' <= c && c <= '9')
goto ieval;
}
remch(c);
if(alpha(peek)){
i = 0;
yylval.cp = (CHR *)token;
token[i++] = c;
while(alpha(peek)) {
remch(token[i++] = gch());
if(i >= TOKENSIZE) {
warning("string too long");
i = TOKENSIZE - 1;
break;
}
}
if(peek == '?' || peek == '*' || peek == '+')
munput('c',&token[--i]);
token[i] = 0;
if(i == 1){
yylval.i = (unsigned)(token[0]);
x = CHAR;
}
else x = STR;
}
else {
yylval.i = (unsigned)c;
x = CHAR;
}
}
scon = FALSE;
peekon = 0;
if((x == SCON) || (x == XSCON))
scon = TRUE;
sectbegin = FALSE;
return(freturn(x));