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- /*
- * err.h
- *
- * Standard error handling mechanism
- *
- * SOFTWARE RIGHTS
- *
- * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
- * Set (PCCTS) -- PCCTS is in the public domain. An individual or
- * company may do whatever they wish with source code distributed with
- * PCCTS or the code generated by PCCTS, including the incorporation of
- * PCCTS, or its output, into commerical software.
- *
- * We encourage users to develop software with PCCTS. However, we do ask
- * that credit is given to us for developing PCCTS. By "credit",
- * we mean that if you incorporate our source code into one of your
- * programs (commercial product, research project, or otherwise) that you
- * acknowledge this fact somewhere in the documentation, research report,
- * etc... If you like PCCTS and have developed a nice tool with the
- * output, please mention that you developed it using PCCTS. In
- * addition, we ask that this header remain intact in our source code.
- * As long as these guidelines are kept, we expect to continue enhancing
- * this system and expect to make other tools available as they are
- * completed.
- *
- * Has grown to hold all kinds of stuff (err.h is increasingly misnamed)
- *
- * ANTLR 1.33
- * Terence Parr
- * Parr Research Corporation
- * with Purdue University and AHPCRC, University of Minnesota
- * 1989-1995
- */
-
- #ifndef ERR_H
- #define ERR_H
-
- #include "config.h"
-
- #import <Foundation/NSString.h>
-
- #include <string.h>
- #ifdef __STDC__
- #include <stdarg.h>
- #else
- #include <varargs.h>
- #endif
-
- #ifdef DUM
- /* Define usable bits per unsigned int word (used for set stuff) */
- #ifdef PC
- #define BSETWORDSIZE 16
- #define BSETLOGWORDSIZE 4
- #else
- #define BSETWORDSIZE 32
- #define BSETLOGWORDSIZE 5
- #endif
- #endif
-
- #define BSETWORDSIZE 8
- #define BSETLOGWORDSIZE 3 /* SetWordType is 8bits */
-
- #define BSETMODWORD(x) ((x) & (BSETWORDSIZE-1)) /* x % BSETWORDSIZE */
- #define BSETDIVWORD(x) ((x) >> BSETLOGWORDSIZE) /* x / BSETWORDSIZE */
-
- /* This is not put into the global pccts_parser structure because it is
- * hidden and does not need to be saved during a "save state" operation
- */
- /* maximum of 32 bits/unsigned int and must be 8 bits/byte */
- static SetWordType bitmask[] = {
- 0x00000001, 0x00000002, 0x00000004, 0x00000008,
- 0x00000010, 0x00000020, 0x00000040, 0x00000080
- };
-
- void
- #ifdef __USE_PROTOS
- zzresynch(SetWordType *wd,SetWordType mask)
- #else
- zzresynch(wd,mask)
- SetWordType *wd, mask;
- #endif
- {
- static int consumed = 1;
-
- /* if you enter here without having consumed a token from last resynch
- * force a token consumption.
- */
- if ( !consumed ) {zzCONSUME; return;}
-
- /* if current token is in resynch set, we've got what we wanted */
- if ( wd[LA(1)]&mask || LA(1) == zzEOF_TOKEN ) {consumed=0; return;}
-
- /* scan until we find something in the resynch set */
- while ( !(wd[LA(1)]&mask) && LA(1) != zzEOF_TOKEN ) {zzCONSUME;}
- consumed=1;
- }
-
- void
- #ifdef __USE_PROTOS
- zzconsumeUntil(SetWordType *st)
- #else
- zzconsumeUntil(st)
- SetWordType *st;
- #endif
- {
- while ( !zzset_el(LA(1), st) ) { zzCONSUME; }
- }
-
- void
- #ifdef __USE_PROTOS
- zzconsumeUntilToken(int t)
- #else
- zzconsumeUntilToken(t)
- int t;
- #endif
- {
- while ( LA(1)!=t ) { zzCONSUME; }
- }
-
- /* input looks like:
- * zzFAIL(k, e1, e2, ...,&zzMissSet,&zzMissText,&zzBadTok,&zzBadText)
- * where the zzMiss stuff is set here to the token that did not match
- * (and which set wasn't it a member of).
- */
- void
- #ifdef __USE_PROTOS
- zzFAIL(int k, ...)
- #else
- zzFAIL(va_alist)
- va_dcl
- #endif
- {
- #ifdef LL_K
- static char text[LL_K*ZZLEXBUFSIZE+1];
- SetWordType *f[LL_K];
- #else
- static char text[ZZLEXBUFSIZE+1];
- SetWordType *f[1];
- #endif
- SetWordType **miss_set;
- char **miss_text;
- int *bad_tok;
- char **bad_text;
- int *err_k;
- int i;
- va_list ap;
- #ifndef __USE_PROTOS
- int k;
- #endif
- #ifdef __USE_PROTOS
- va_start(ap, k);
- #else
- va_start(ap);
- k = va_arg(ap, int); /* how many lookahead sets? */
- #endif
- text[0] = '\0';
- for (i=1; i<=k; i++) /* collect all lookahead sets */
- {
- f[i-1] = va_arg(ap, SetWordType *);
- }
- for (i=1; i<=k; i++) /* look for offending token */
- {
- if ( i>1 ) strcat(text, " ");
- strcat(text, LATEXT(i));
- if ( !zzset_el((unsigned)LA(i), f[i-1]) ) break;
- }
- miss_set = va_arg(ap, SetWordType **);
- miss_text = va_arg(ap, char **);
- bad_tok = va_arg(ap, int *);
- bad_text = va_arg(ap, char **);
- err_k = va_arg(ap, int *);
- if ( i>k )
- {
- /* bad; lookahead is permutation that cannot be matched,
- * but, the ith token of lookahead is valid at the ith position
- * (The old LL sub 1 (k) versus LL(k) parsing technique)
- */
- *miss_set = NULL;
- *miss_text = zzlextext;
- *bad_tok = LA(1);
- *bad_text = LATEXT(1);
- *err_k = k;
- return;
- }
- /* fprintf(stderr, "%s not in %dth set\n", zztokens[LA(i)], i);*/
- *miss_set = f[i-1];
- *miss_text = text;
- *bad_tok = LA(i);
- *bad_text = LATEXT(i);
- if ( i==1 ) *err_k = 1;
- else *err_k = k;
- }
-
- void
- #ifdef __USE_PROTOS
- zzsave_antlr_state(zzantlr_state *buf)
- #else
- zzsave_antlr_state(buf)
- zzantlr_state *buf;
- #endif
- {
- #ifdef LL_K
- int i;
- #endif
-
- #ifdef ZZCAN_GUESS
- buf->guess_start = zzguess_start;
- buf->guessing = zzguessing;
- #endif
- buf->asp = zzasp;
- #ifdef GENAST
- buf->ast_sp = zzast_sp;
- #endif
- #ifdef ZZINF_LOOK
- buf->inf_labase = zzinf_labase;
- buf->inf_last = zzinf_last;
- #endif
- #ifdef DEMAND_LOOK
- buf->dirty = zzdirty;
- #endif
- #ifdef LL_K
- for (i=0; i<LL_K; i++) buf->tokenLA[i] = zztokenLA[i];
- for (i=0; i<LL_K; i++) strcpy(buf->textLA[i], zztextLA[i]);
- buf->lap = zzlap;
- buf->labase = zzlabase;
- #else
- buf->token = zztoken;
- strcpy(buf->text, zzlextext);
- #endif
- }
-
- void
- #ifdef __USE_PROTOS
- zzrestore_antlr_state(zzantlr_state *buf)
- #else
- zzrestore_antlr_state(buf)
- zzantlr_state *buf;
- #endif
- {
- #ifdef LL_K
- int i;
- #endif
-
- #ifdef ZZCAN_GUESS
- zzguess_start = buf->guess_start;
- zzguessing = buf->guessing;
- #endif
- zzasp = buf->asp;
- #ifdef GENAST
- zzast_sp = buf->ast_sp;
- #endif
- #ifdef ZZINF_LOOK
- zzinf_labase = buf->inf_labase;
- zzinf_last = buf->inf_last;
- #endif
- #ifdef DEMAND_LOOK
- zzdirty = buf->dirty;
- #endif
- #ifdef LL_K
- for (i=0; i<LL_K; i++) zztokenLA[i] = buf->tokenLA[i];
- for (i=0; i<LL_K; i++) strcpy(zztextLA[i], buf->textLA[i]);
- zzlap = buf->lap;
- zzlabase = buf->labase;
- #else
- zztoken = buf->token;
- strcpy(zzlextext, buf->text);
- #endif
- }
-
- NSString* zzedecode(SetWordType *a)
- {
- register SetWordType *p = a;
- register SetWordType *endp = &(p[zzSET_SIZE]);
- register unsigned e = 0;
- NSMutableString* string = [[NSMutableString new] autorelease];
-
- if (zzset_deg (a) > 1)
- [string appendString:@" {"];
- do {
- register SetWordType t = *p;
- register SetWordType *b = &(bitmask[0]);
- do {
- if (t & *b)
- [string appendFormat:@" %s", zztokens[e]];
- e++;
- } while (++b < &(bitmask[sizeof(SetWordType)*8]));
- } while (++p < endp);
- if (zzset_deg(a) > 1)
- [string appendString:@" }"];
-
- return string;
- }
-
- #ifndef USER_ZZSYN
- /* standard error reporting function */
- void
- #ifdef __USE_PROTOS
- zzsyn(char *text, int tok, char *egroup, SetWordType *eset, int etok, int k, char *bad_text)
- #else
- zzsyn(text, tok, egroup, eset, etok, k, bad_text)
- char *text, *egroup, *bad_text;
- int tok;
- int etok;
- int k;
- SetWordType *eset;
- #endif
- {
-
- fprintf(stderr, "line %d: syntax error at \"%s\"", zzline, (tok==zzEOF_TOKEN)?"EOF":bad_text);
- if ( !etok && !eset ) {fprintf(stderr, "\n"); return;}
- if ( k==1 ) fprintf(stderr, " missing");
- else
- {
- fprintf(stderr, "; \"%s\" not", bad_text);
- if ( zzset_deg(eset)>1 ) fprintf(stderr, " in");
- }
- if ( zzset_deg(eset)>0 ) zzedecode(eset);
- else fprintf(stderr, " %s", zztokens[etok]);
- if ( strlen(egroup) > 0 ) fprintf(stderr, " in %s", egroup);
- fprintf(stderr, "\n");
- }
- #endif
-
- /* is b an element of set p? */
- int
- #ifdef __USE_PROTOS
- zzset_el(unsigned b, SetWordType *p)
- #else
- zzset_el(b,p)
- unsigned b;
- SetWordType *p;
- #endif
- {
- return( p[BSETDIVWORD(b)] & bitmask[BSETMODWORD(b)] );
- }
-
- int
- #ifdef __USE_PROTOS
- zzset_deg(SetWordType *a)
- #else
- zzset_deg(a)
- SetWordType *a;
- #endif
- {
- /* Fast compute degree of a set... the number
- of elements present in the set. Assumes
- that all word bits are used in the set
- */
- register SetWordType *p = a;
- register SetWordType *endp = &(a[zzSET_SIZE]);
- register int degree = 0;
-
- if ( a == NULL ) return 0;
- while ( p < endp )
- {
- register SetWordType t = *p;
- register SetWordType *b = &(bitmask[0]);
- do {
- if (t & *b) ++degree;
- } while (++b < &(bitmask[sizeof(SetWordType)*8]));
- p++;
- }
-
- return(degree);
- }
-
- #ifdef DEMAND_LOOK
-
- #ifdef LL_K
- int
- #ifdef __USE_PROTOS
- _zzmatch(int _t, char **zzBadText, char **zzMissText,
- int *zzMissTok, int *zzBadTok,
- SetWordType **zzMissSet)
- #else
- _zzmatch(_t, zzBadText, zzMissText, zzMissTok, zzBadTok, zzMissSet)
- int _t;
- char **zzBadText;
- char **zzMissText;
- int *zzMissTok, *zzBadTok;
- SetWordType **zzMissSet;
- #endif
- {
- if ( zzdirty==LL_K ) {
- zzCONSUME;
- }
- if ( LA(1)!=_t ) {
- *zzBadText = *zzMissText=LATEXT(1);
- *zzMissTok= _t; *zzBadTok=LA(1);
- *zzMissSet=NULL;
- return 0;
- }
- zzMakeAttr
- zzdirty++;
- zzlabase++;
- return 1;
- }
-
- int
- #ifdef __USE_PROTOS
- _zzmatch_wsig(int _t)
- #else
- _zzmatch_wsig(_t)
- int _t;
- #endif
- {
- if ( zzdirty==LL_K ) {
- zzCONSUME;
- }
- if ( LA(1)!=_t ) {
- return 0;
- }
- zzMakeAttr
- zzdirty++;
- zzlabase++;
- return 1;
- }
-
- #else
-
- int
- #ifdef __USE_PROTOS
- _zzmatch(int _t, char **zzBadText, char **zzMissText,
- int *zzMissTok, int *zzBadTok, SetWordType **zzMissSet)
- #else
- _zzmatch(_t, zzBadText, zzMissText, zzMissTok, zzBadTok, zzMissSet)
- int _t;
- char **zzBadText;
- char **zzMissText;
- int *zzMissTok, *zzBadTok;
- SetWordType **zzMissSet;
- #endif
- {
- if ( zzdirty ) {zzCONSUME;}
- if ( LA(1)!=_t ) {
- *zzBadText = *zzMissText=LATEXT(1);
- *zzMissTok= _t; *zzBadTok=LA(1);
- *zzMissSet=NULL;
- return 0;
- }
- zzdirty = 1;
- zzMakeAttr
- return 1;
- }
-
- int
- #ifdef __USE_PROTOS
- _zzmatch_wsig(int _t)
- #else
- _zzmatch_wsig(_t)
- int _t;
- #endif
- {
- if ( zzdirty ) {zzCONSUME;}
- if ( LA(1)!=_t ) {
- return 0;
- }
- zzdirty = 1;
- zzMakeAttr
- return 1;
- }
-
- #endif /*LL_K*/
-
- #else
-
- int
- #ifdef __USE_PROTOS
- _zzmatch(int _t, char **zzBadText, char **zzMissText,
- int *zzMissTok, int *zzBadTok,
- SetWordType **zzMissSet)
- #else
- _zzmatch(_t, zzBadText, zzMissText, zzMissTok, zzBadTok, zzMissSet)
- int _t;
- char **zzBadText;
- char **zzMissText;
- int *zzMissTok, *zzBadTok;
- SetWordType **zzMissSet;
- #endif
- {
- if ( LA(1)!=_t ) {
- *zzBadText = *zzMissText=LATEXT(1);
- *zzMissTok= _t; *zzBadTok=LA(1);
- *zzMissSet=NULL;
- return 0;
- }
- zzMakeAttr
- return 1;
- }
-
- int
- #ifdef __USE_PROTOS
- _zzmatch_wsig(int _t)
- #else
- _zzmatch_wsig(_t)
- int _t;
- #endif
- {
- if ( LA(1)!=_t ) return 0;
- zzMakeAttr
- return 1;
- }
-
- #endif /*DEMAND_LOOK*/
-
- #ifdef ZZINF_LOOK
- void
- #ifdef __USE_PROTOS
- _inf_zzgettok(void)
- #else
- _inf_zzgettok()
- #endif
- {
- if ( zzinf_labase >= zzinf_last )
- {NLA = zzEOF_TOKEN; strcpy(NLATEXT, "");}
- else {
- NLA = zzinf_tokens[zzinf_labase];
- zzline = zzinf_line[zzinf_labase]; /* wrong in 1.21 */
- strcpy(NLATEXT, zzinf_text[zzinf_labase]);
- zzinf_labase++;
- }
- }
- #endif
-
- #ifdef ZZINF_LOOK
- /* allocate default size text,token and line arrays;
- * then, read all of the input reallocing the arrays as needed.
- * Once the number of total tokens is known, the LATEXT(i) array (zzinf_text)
- * is allocated and it's pointers are set to the tokens in zzinf_text_buffer.
- */
- void
- #ifdef __USE_PROTOS
- zzfill_inf_look(void)
- #else
- zzfill_inf_look()
- #endif
- {
- int tok, line;
- int zzinf_token_buffer_size = ZZINF_DEF_TOKEN_BUFFER_SIZE;
- int zzinf_text_buffer_size = ZZINF_DEF_TEXT_BUFFER_SIZE;
- int zzinf_text_buffer_index = 0;
- int zzinf_lap = 0;
-
- /* allocate text/token buffers */
- zzinf_text_buffer = (char *) malloc(zzinf_text_buffer_size);
- if ( zzinf_text_buffer == NULL )
- {
- fprintf(stderr, "cannot allocate lookahead text buffer (%d bytes)\n",
- zzinf_text_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
- zzinf_tokens = (int *) calloc(zzinf_token_buffer_size,sizeof(int));
- if ( zzinf_tokens == NULL )
- {
- fprintf(stderr, "cannot allocate token buffer (%d tokens)\n",
- zzinf_token_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
- zzinf_line = (int *) calloc(zzinf_token_buffer_size,sizeof(int));
- if ( zzinf_line == NULL )
- {
- fprintf(stderr, "cannot allocate line buffer (%d ints)\n",
- zzinf_token_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
-
- /* get tokens, copying text to text buffer */
- zzinf_text_buffer_index = 0;
- do {
- zzgettok();
- line = zzreal_line;
- while ( zzinf_lap>=zzinf_token_buffer_size )
- {
- zzinf_token_buffer_size += ZZINF_BUFFER_TOKEN_CHUNK_SIZE;
- zzinf_tokens = (int *) realloc(zzinf_tokens,
- zzinf_token_buffer_size*sizeof(int));
- if ( zzinf_tokens == NULL )
- {
- fprintf(stderr, "cannot allocate lookahead token buffer (%d tokens)\n",
- zzinf_token_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
- zzinf_line = (int *) realloc(zzinf_line,
- zzinf_token_buffer_size*sizeof(int));
- if ( zzinf_line == NULL )
- {
- fprintf(stderr, "cannot allocate lookahead line buffer (%d ints)\n",
- zzinf_token_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
-
- }
- while ( (zzinf_text_buffer_index+strlen(NLATEXT)+1) >= zzinf_text_buffer_size )
- {
- zzinf_text_buffer_size += ZZINF_BUFFER_TEXT_CHUNK_SIZE;
- zzinf_text_buffer = (char *) realloc(zzinf_text_buffer,
- zzinf_text_buffer_size);
- if ( zzinf_text_buffer == NULL )
- {
- fprintf(stderr, "cannot allocate lookahead text buffer (%d bytes)\n",
- zzinf_text_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
- }
- /* record token and text and line of input symbol */
- tok = zzinf_tokens[zzinf_lap] = NLA;
- strcpy(&zzinf_text_buffer[zzinf_text_buffer_index], NLATEXT);
- zzinf_text_buffer_index += strlen(NLATEXT)+1;
- zzinf_line[zzinf_lap] = line;
- zzinf_lap++;
- } while (tok!=zzEOF_TOKEN);
- zzinf_labase = 0;
- zzinf_last = zzinf_lap-1;
-
- /* allocate ptrs to text of ith token */
- zzinf_text = (char **) calloc(zzinf_last+1,sizeof(char *));
- if ( zzinf_text == NULL )
- {
- fprintf(stderr, "cannot allocate lookahead text buffer (%d)\n",
- zzinf_text_buffer_size);
- exit(PCCTS_EXIT_FAILURE);
- }
- zzinf_text_buffer_index = 0;
- zzinf_lap = 0;
- /* set ptrs so that zzinf_text[i] is the text of the ith token found on input */
- while (zzinf_lap<=zzinf_last)
- {
- zzinf_text[zzinf_lap++] = &zzinf_text_buffer[zzinf_text_buffer_index];
- zzinf_text_buffer_index += strlen(&zzinf_text_buffer[zzinf_text_buffer_index])+1;
- }
- }
- #endif
-
- int
- #ifdef __USE_PROTOS
- _zzsetmatch(SetWordType *e, char **zzBadText, char **zzMissText,
- int *zzMissTok, int *zzBadTok,
- SetWordType **zzMissSet)
- #else
- _zzsetmatch(e, zzBadText, zzMissText, zzMissTok, zzBadTok, zzMissSet)
- SetWordType *e;
- char **zzBadText;
- char **zzMissText;
- int *zzMissTok, *zzBadTok;
- SetWordType **zzMissSet;
- #endif
- {
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- if ( zzdirty==LL_K ) {zzCONSUME;}
- #else
- if ( zzdirty ) {zzCONSUME;}
- #endif
- #endif
- if ( !zzset_el((unsigned)LA(1), e) ) {
- *zzBadText = LATEXT(1); *zzMissText=NULL;
- *zzMissTok= 0; *zzBadTok=LA(1);
- *zzMissSet=e;
- return 0;
- }
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- zzdirty++;
- #else
- zzdirty = 1;
- #endif
- #endif
- zzMakeAttr
- return 1;
- }
-
- int
- #ifdef __USE_PROTOS
- _zzmatch_wdfltsig(int tokenWanted, SetWordType *whatFollows)
- #else
- _zzmatch_wdfltsig(tokenWanted, whatFollows)
- int tokenWanted;
- SetWordType *whatFollows;
- #endif
- {
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- if ( zzdirty==LL_K ) {
- zzCONSUME;
- }
- #else
- if ( zzdirty ) {zzCONSUME;}
- #endif
- #endif
-
- if ( LA(1)!=tokenWanted )
- {
- fprintf(stderr,
- "line %d: syntax error at \"%s\" missing %s\n",
- zzline,
- (LA(1)==zzEOF_TOKEN)?"<eof>":LATEXT(1),
- zztokens[tokenWanted]);
- zzconsumeUntil( whatFollows );
- return 0;
- }
- else {
- zzMakeAttr
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- zzdirty++;
- zzlabase++;
- #else
- zzdirty = 1;
- #endif
- #else
- /* zzCONSUME; consume if not demand lookahead */
- #endif
- return 1;
- }
- }
-
- int
- #ifdef __USE_PROTOS
- _zzsetmatch_wdfltsig(SetWordType *tokensWanted,
- int tokenTypeOfSet,
- SetWordType *whatFollows)
- #else
- _zzsetmatch_wdfltsig(tokensWanted, tokenTypeOfSet, whatFollows)
- SetWordType *tokensWanted;
- int tokenTypeOfSet;
- SetWordType *whatFollows;
- #endif
- {
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- if ( zzdirty==LL_K ) {zzCONSUME;}
- #else
- if ( zzdirty ) {zzCONSUME;}
- #endif
- #endif
- if ( !zzset_el((unsigned)LA(1), tokensWanted) )
- {
- fprintf(stderr,
- "line %d: syntax error at \"%s\" missing %s\n",
- zzline,
- (LA(1)==zzEOF_TOKEN)?"<eof>":LATEXT(1),
- zztokens[tokenTypeOfSet]);
- zzconsumeUntil( whatFollows );
- return 0;
- }
- else {
- zzMakeAttr
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- zzdirty++;
- zzlabase++;
- #else
- zzdirty = 1;
- #endif
- #else
- /* zzCONSUME; consume if not demand lookahead */
- #endif
- return 1;
- }
- }
-
- int
- #ifdef __USE_PROTOS
- _zzsetmatch_wsig(SetWordType *e)
- #else
- _zzsetmatch_wsig(e)
- SetWordType *e;
- #endif
- {
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- if ( zzdirty==LL_K ) {zzCONSUME;}
- #else
- if ( zzdirty ) {zzCONSUME;}
- #endif
- #endif
- if ( !zzset_el((unsigned)LA(1), e) ) return 0;
- #ifdef DEMAND_LOOK
- #ifdef LL_K
- zzdirty++;
- #else
- zzdirty = 1;
- #endif
- #endif
- zzMakeAttr
- return 1;
- }
-
- #ifdef USER_ZZMODE_STACK
- static int zzmstk[ZZMAXSTK] = { -1 };
- static int zzmdep = 0;
- static char zzmbuf[70];
-
- void
- #ifdef __USE_PROTOS
- zzmpush( int m )
- #else
- zzmpush( m )
- int m;
- #endif
- {
- if(zzmdep == ZZMAXSTK - 1) {
- sprintf(zzmbuf, "Mode stack overflow ");
- zzerr(zzmbuf);
- } else {
- zzmstk[zzmdep++] = zzauto;
- zzmode(m);
- }
- }
-
- void
- #ifdef __USE_PROTOS
- zzmpop( void )
- #else
- zzmpop( )
- #endif
- {
- if(zzmdep == 0)
- { sprintf(zzmbuf, "Mode stack underflow ");
- zzerr(zzmbuf);
- }
- else
- { zzmdep--;
- zzmode(zzmstk[zzmdep]);
- }
- }
-
- void
- #ifdef __USE_PROTOS
- zzsave_mode_stack( int modeStack[], int *modeLevel )
- #else
- zzsave_mode_stack( modeStack, modeLevel )
- int modeStack[];
- int *modeLevel;
- #endif
- {
- int i;
- memcpy(modeStack, zzmstk, sizeof(zzmstk));
- *modeLevel = zzmdep;
- zzmdep = 0;
-
- return;
- }
-
- void
- #ifdef __USE_PROTOS
- zzrestore_mode_stack( int modeStack[], int *modeLevel )
- #else
- zzrestore_mode_stack( modeStack, modeLevel )
- int modeStack[];
- int *modeLevel;
- #endif
- {
- int i;
-
- memcpy(zzmstk, modeStack, sizeof(zzmstk));
- zzmdep = *modeLevel;
-
- return;
- }
- #endif /* USER_ZZMODE_STACK */
-
- #endif /* ERR_H */
-