diff options
Diffstat (limited to 'src/translators/btparse/err.h')
-rw-r--r-- | src/translators/btparse/err.h | 700 |
1 files changed, 700 insertions, 0 deletions
diff --git a/src/translators/btparse/err.h b/src/translators/btparse/err.h new file mode 100644 index 0000000..d16615d --- /dev/null +++ b/src/translators/btparse/err.h @@ -0,0 +1,700 @@ +/* + * 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 "btconfig.h" + +#include <string.h> +#include <stdarg.h> + +#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 +zzresynch(SetWordType *wd,SetWordType mask) +{ + 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 +zzconsumeUntil(SetWordType *st) +{ + while ( !zzset_el(LA(1), st) ) { zzCONSUME; } +} + +void +zzconsumeUntilToken(int t) +{ + 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 +zzFAIL(int k, ...) +{ +#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; +/* Removed because it shadows a parameter. gcc 3.4 complains. + I think removing it preserves the behavior of gcc 3.3 and previous. + int k; +*/ + va_start(ap, k); + 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 +zzsave_antlr_state(zzantlr_state *buf) +{ +#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 +zzrestore_antlr_state(zzantlr_state *buf) +{ +#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 +} + +void +zzedecode(SetWordType *a) +{ + register SetWordType *p = a; + register SetWordType *endp = &(p[zzSET_SIZE]); + register unsigned e = 0; + + if ( zzset_deg(a)>1 ) fprintf(stderr, " {"); + do { + register SetWordType t = *p; + register SetWordType *b = &(bitmask[0]); + do { + if ( t & *b ) fprintf(stderr, " %s", zztokens[e]); + e++; + } while (++b < &(bitmask[sizeof(SetWordType)*8])); + } while (++p < endp); + if ( zzset_deg(a)>1 ) fprintf(stderr, " }"); +} + +#ifndef USER_ZZSYN +/* standard error reporting function */ +void +zzsyn(char *text, int tok, char *egroup, SetWordType *eset, int etok, int k, char *bad_text) +{ + + 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 +zzset_el(unsigned b, SetWordType *p) +{ + return( p[BSETDIVWORD(b)] & bitmask[BSETMODWORD(b)] ); +} + +int +zzset_deg(SetWordType *a) +{ + /* 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 +_zzmatch(int _t, char **zzBadText, char **zzMissText, + int *zzMissTok, int *zzBadTok, + SetWordType **zzMissSet) +{ + 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 +_zzmatch_wsig(int _t) +{ + if ( zzdirty==LL_K ) { + zzCONSUME; + } + if ( LA(1)!=_t ) { + return 0; + } + zzMakeAttr + zzdirty++; + zzlabase++; + return 1; +} + +#else + +int +_zzmatch(int _t, char **zzBadText, char **zzMissText, + int *zzMissTok, int *zzBadTok, SetWordType **zzMissSet) +{ + 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 +_zzmatch_wsig(int _t) +{ + if ( zzdirty ) {zzCONSUME;} + if ( LA(1)!=_t ) { + return 0; + } + zzdirty = 1; + zzMakeAttr + return 1; +} + +#endif /*LL_K*/ + +#else + +int +_zzmatch(int _t, const char **zzBadText, const char **zzMissText, + int *zzMissTok, int *zzBadTok, + SetWordType **zzMissSet) +{ + if ( LA(1)!=_t ) { + *zzBadText = *zzMissText=LATEXT(1); + *zzMissTok= _t; *zzBadTok=LA(1); + *zzMissSet=NULL; + return 0; + } + zzMakeAttr + return 1; +} + +int +_zzmatch_wsig(int _t) +{ + if ( LA(1)!=_t ) return 0; + zzMakeAttr + return 1; +} + +#endif /*DEMAND_LOOK*/ + +#ifdef ZZINF_LOOK +void +_inf_zzgettok(void) +{ + 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 +zzfill_inf_look(void) +{ + 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 +_zzsetmatch(SetWordType *e, char **zzBadText, char **zzMissText, + int *zzMissTok, int *zzBadTok, + SetWordType **zzMissSet) +{ +#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 +_zzmatch_wdfltsig(int tokenWanted, SetWordType *whatFollows) +{ +#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>":(char*)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 +_zzsetmatch_wdfltsig(SetWordType *tokensWanted, + int tokenTypeOfSet, + SetWordType *whatFollows) +{ +#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>":(char*)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 +_zzsetmatch_wsig(SetWordType *e) +{ +#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 +zzmpush( int m ) +{ + if(zzmdep == ZZMAXSTK - 1) { + sprintf(zzmbuf, "Mode stack overflow "); + zzerr(zzmbuf); + } else { + zzmstk[zzmdep++] = zzauto; + zzmode(m); + } +} + +void +zzmpop( void ) +{ + if(zzmdep == 0) + { sprintf(zzmbuf, "Mode stack underflow "); + zzerr(zzmbuf); + } + else + { zzmdep--; + zzmode(zzmstk[zzmdep]); + } +} + +void +zzsave_mode_stack( int modeStack[], int *modeLevel ) +{ + int i; + memcpy(modeStack, zzmstk, sizeof(zzmstk)); + *modeLevel = zzmdep; + zzmdep = 0; + + return; +} + +void +zzrestore_mode_stack( int modeStack[], int *modeLevel ) +{ + int i; + + memcpy(zzmstk, modeStack, sizeof(zzmstk)); + zzmdep = *modeLevel; + + return; +} +#endif /* USER_ZZMODE_STACK */ + +#endif /* ERR_H */ |