+++ /dev/null
-/*\r
- * antlr.g -- PCCTS Version 1.xx ANTLR\r
- *\r
- * Parse an antlr input grammar and build a syntax-diagram.\r
- *\r
- * Written in itself (needs at least 1.06 to work)\r
- *\r
- * SOFTWARE RIGHTS\r
- *\r
- * We reserve no LEGAL rights to the Purdue Compiler Construction Tool\r
- * Set (PCCTS) -- PCCTS is in the public domain. An individual or\r
- * company may do whatever they wish with source code distributed with\r
- * PCCTS or the code generated by PCCTS, including the incorporation of\r
- * PCCTS, or its output, into commerical software.\r
- *\r
- * We encourage users to develop software with PCCTS. However, we do ask\r
- * that credit is given to us for developing PCCTS. By "credit",\r
- * we mean that if you incorporate our source code into one of your\r
- * programs (commercial product, research project, or otherwise) that you\r
- * acknowledge this fact somewhere in the documentation, research report,\r
- * etc... If you like PCCTS and have developed a nice tool with the\r
- * output, please mention that you developed it using PCCTS. In\r
- * addition, we ask that this header remain intact in our source code.\r
- * As long as these guidelines are kept, we expect to continue enhancing\r
- * this system and expect to make other tools available as they are\r
- * completed.\r
- *\r
- * ANTLR 1.33\r
- * Terence Parr\r
- * Parr Research Corporation\r
- * with Purdue University and AHPCRC, University of Minnesota\r
- * 1989-1995\r
- */\r
-\r
-/* MR1 */\r
-/* MR1 10-Apr-97 MR1 Replace #if logic with #include "pcctscfg.h" */\r
-/* MR1 */\r
-\r
-#header <<\r
- #include "pcctscfg.h"\r
- #include "set.h"\r
- #include <ctype.h>\r
- #include "syn.h"\r
- #include "hash.h"\r
- #include "generic.h"\r
- #define zzcr_attr(attr,tok,t)\r
- >>\r
-\r
-<<\r
-\r
-/* MR20 G. Hobbelt For Borland C++ 4.x & 5.x compiling with ALL warnings enabled */\r
-#if defined(__TURBOC__)\r
-#pragma warn -aus /* unused assignment of 'xxx' */\r
-#endif\r
-\r
-\r
-#ifdef __USE_PROTOS\r
-static void chkToken(char *, char *, char *, int);\r
-#else\r
-static void chkToken();\r
-#endif\r
-\r
-#ifdef __USE_PROTOS\r
-static int isDLGmaxToken(char *Token); /* MR3 */\r
-#else\r
-static int isDLGmaxToken(); /* MR3 */\r
-#endif\r
-\r
-static int class_nest_level = 0;\r
-\r
-/* MR20 G. Hobbelt extern definitions moved to antlr.h */\r
-\r
->>\r
-\r
-#lexaction <<\r
-/* maintained, but not used for now */\r
-set AST_nodes_refd_in_actions = set_init;\r
-int inAlt = 0;\r
-set attribsRefdFromAction = set_init; /* MR20 */\r
-int UsedOldStyleAttrib = 0;\r
-int UsedNewStyleLabel = 0;\r
-#ifdef __USE_PROTOS\r
-char *inline_set(char *);\r
-#else\r
-char *inline_set();\r
-#endif\r
-\r
-/* MR1 10-Apr-97 MR1 Previously unable to put right shift operator */\r
-/* MR1 in DLG action */\r
-\r
-int tokenActionActive=0; /* MR1 */\r
-\r
->>\r
-\r
-#lexclass STRINGS\r
-#token QuotedTerm "\"" << zzmode(START); >>\r
-#token "\n|\r|\r\n" <<\r
- zzline++;\r
- warn("eoln found in string");\r
- zzskip();\r
- >>\r
-#token "\\(\n|\r|\r\n)" << zzline++; zzmore(); >>\r
-#token "\\~[]" << zzmore(); >>\r
-#token "~[\n\r\"\\]+" << zzmore(); >>\r
-\r
-#lexclass ACTION_STRINGS\r
-#token "\"" << zzmode(ACTIONS); zzmore(); >>\r
-#token "\n|\r|\r\n" <<\r
- zzline++;\r
- warn("eoln found in string (in user action)");\r
- zzskip();\r
- >>\r
-#token "\\(\n|\r|\r\n)" << zzline++; zzmore(); >>\r
-#token "\\~[]" << zzmore(); >>\r
-#token "~[\n\r\"\\]+" << zzmore(); >>\r
-\r
-#lexclass ACTION_CHARS\r
-#token "'" << zzmode(ACTIONS); zzmore(); >>\r
-#token "\n|\r|\r\n" <<\r
- zzline++;\r
- warn("eoln found in char literal (in user action)");\r
- zzskip();\r
- >>\r
-#token "\\~[]" << zzmore(); >>\r
-#token "~[\n\r'\\]+" << zzmore(); >>\r
-\r
-#lexclass ACTION_COMMENTS\r
-#token "\*/" << zzmode(ACTIONS); zzmore(); >>\r
-#token "\*" << zzmore(); >>\r
-#token "\n|\r|\r\n" << zzline++; zzmore(); DAWDLE; >>\r
-#token "~[\n\r\*]+" << zzmore(); >>\r
-\r
-#lexclass TOK_DEF_COMMENTS\r
-#token "\*/" << zzmode(PARSE_ENUM_FILE);\r
- zzmore(); >>\r
-#token "\*" << zzmore(); >>\r
-#token "\n|\r|\r\n" << zzline++; zzmore(); DAWDLE; >>\r
-#token "~[\n\r\*]+" << zzmore(); >>\r
-\r
-#lexclass TOK_DEF_CPP_COMMENTS\r
-#token "\n|\r|\r\n" << zzline++; zzmode(PARSE_ENUM_FILE); zzskip(); DAWDLE; >>\r
-#token "~[\n\r]+" << zzskip(); >>\r
-\r
-#lexclass ACTION_CPP_COMMENTS\r
-#token "\n|\r|\r\n" << zzline++; zzmode(ACTIONS); zzmore(); DAWDLE; >>\r
-#token "~[\n\r]+" << zzmore(); >>\r
-\r
-#lexclass CPP_COMMENTS\r
-#token "\n|\r|\r\n" << zzline++; zzmode(START); zzskip(); DAWDLE; >>\r
-#token "~[\n\r]+" << zzskip(); >>\r
-\r
-#lexclass COMMENTS\r
-#token "\*/" << zzmode(START); zzskip(); >>\r
-#token "\*" << zzskip(); >>\r
-#token "\n|\r|\r\n" << zzline++; zzskip(); DAWDLE; >>\r
-#token "~[\n\r\*]+" << zzskip(); >>\r
-\r
-/*\r
- * This lexical class accepts actions of type [..] and <<..>>\r
- *\r
- * It translates the following special items for C:\r
- *\r
- * $j --> "zzaArg(current zztasp, j)"\r
- * $i.j --> "zzaArg(zztaspi, j)"\r
- * $i.nondigit> "zzaArg(current zztasp, i).nondigit"\r
- * $$ --> "zzaRet"\r
- * $alnum --> "alnum" (used to ref parameters)\r
- * $rule --> "zzaRet"\r
- * $retval --> "_retv.retval" if > 1 return values else "_retv"\r
- * $[token, text] --> "zzconstr_attr(token, text)"\r
- * $[] --> "zzempty_attr()"\r
- *\r
- * It translates the following special items for C++:\r
- * (attributes are now stored with 'Token' and $i's are only\r
- * pointers to the Tokens. Rules don't have attributes now.)\r
- *\r
- * $j --> "_tbj" where b is the block level\r
- * $i.j --> "_tij"\r
- * $j->nondigit> "_tbj->nondigit"\r
- * $$ --> "$$"\r
- * $alnum --> "alnum" (used to ref parameters)\r
- * $rule --> "$rule"\r
- * $retval --> "_retv.retval" if > 1 return values else "_retv"\r
- * $[token, text] --> invalid\r
- * $[] --> invalid\r
- *\r
- * And, for trees:\r
- *\r
- * #0 --> "(*_root)"\r
- * #i --> "zzastArg(i)"\r
- * #[args] --> "zzmk_ast(zzastnew(), args)"\r
- * #[] --> "zzastnew()"\r
- * #( root, child1, ..., childn )\r
- * --> "zztmake(root, child1, ...., childn, NULL)"\r
- * #() --> "NULL"\r
- *\r
- * For C++, ...\r
- *\r
- * #0 --> "(*_root)"\r
- * #i --> "_astbi" where b is the block level\r
- * #alnum --> "alnum_ast" (used to ref #label)\r
- * #[args] --> "new AST(args)"\r
- * #[] --> "new AST"\r
- * #( root, child1, ..., childn )\r
- * --> "AST::tmake(root, child1, ...., childn, NULL)"\r
- * #() --> "NULL"\r
- *\r
- * To escape,\r
- *\r
- * \] --> ]\r
- * \) --> )\r
- * \$ --> $\r
- * \# --> #\r
- *\r
- * A stack is used to nest action terminators because they can be nested\r
- * like crazy: << #[$[..],..] >>\r
- */\r
-#lexclass ACTIONS\r
-#token Action "\>\>" << /* these do not nest */\r
- zzmode(START);\r
- NLATEXT[0] = ' ';\r
- NLATEXT[1] = ' ';\r
- zzbegexpr[0] = ' ';\r
- zzbegexpr[1] = ' ';\r
- if ( zzbufovf ) {\r
- err( eMsgd("action buffer overflow; size %d",ZZLEXBUFSIZE));\r
- }\r
-\r
-/* MR1 10-Apr-97 MR1 Previously unable to put right shift operator */\r
-/* MR1 in DLG action */\r
-/* MR1 Doesn't matter what kind of action it is - reset*/\r
-\r
- tokenActionActive=0; /* MR1 */\r
- >>\r
-#token Pred "\>\>?" << /* these do not nest */\r
- zzmode(START);\r
- NLATEXT[0] = ' ';\r
- NLATEXT[1] = ' ';\r
- zzbegexpr[0] = '\0';\r
- if ( zzbufovf ) {\r
- err( eMsgd("predicate buffer overflow; size %d",ZZLEXBUFSIZE));\r
- };\r
-#ifdef __cplusplus__\r
-/* MR10 */ list_apply(CurActionLabels, (void (*)(void *))mark_label_used_in_sem_pred);\r
-#else\r
-#ifdef __STDC__\r
-/* MR10 */ list_apply(CurActionLabels, (void (*)(void *))mark_label_used_in_sem_pred);\r
-#else\r
-#ifdef __USE_PROTOS\r
-/* MRxx */ list_apply(CurActionLabels, (void (*)(void *))mark_label_used_in_sem_pred);\r
-#else\r
-/* MR10 */ list_apply(CurActionLabels,mark_label_used_in_sem_pred);\r
-#endif\r
-#endif\r
-#endif\r
- >>\r
-#token PassAction "\]" << if ( topint() == ']' ) {\r
- popint();\r
- if ( istackempty() ) /* terminate action */\r
- {\r
- zzmode(START);\r
- NLATEXT[0] = ' ';\r
- zzbegexpr[0] = ' ';\r
- if ( zzbufovf ) {\r
- err( eMsgd("parameter buffer overflow; size %d",ZZLEXBUFSIZE));\r
- }\r
- }\r
- else {\r
- /* terminate $[..] and #[..] */\r
- if ( GenCC ) zzreplstr("))");\r
- else zzreplstr(")");\r
- zzmore();\r
- }\r
- }\r
- else if ( topint() == '|' ) { /* end of simple [...] */\r
- popint();\r
- zzmore();\r
- }\r
- else zzmore();\r
- >>\r
-#token "consumeUntil\( [\ \t]* \{~[\}]+\} [\ \t]* \)"\r
- <<\r
- zzmore();\r
- zzreplstr(inline_set(zzbegexpr+\r
- strlen("consumeUntil(")));\r
- >>\r
-#token "consumeUntil\( ~[\)]+ \)"\r
- << zzmore(); >>\r
-#token "\n|\r|\r\n" << zzline++; zzmore(); DAWDLE; >>\r
-#token "\>" << zzmore(); >>\r
-#token "$" << zzmore(); >>\r
-#token "$$" << if ( !GenCC ) {zzreplstr("zzaRet"); zzmore();}\r
- else err("$$ use invalid in C++ mode"); >>\r
-\r
-#token "$\[\]" << if ( !GenCC ) {zzreplstr("zzempty_attr"); zzmore();}\r
- else err("$[] use invalid in C++ mode"); >>\r
-#token "$\[" <<\r
- pushint(']');\r
- if ( !GenCC ) zzreplstr("zzconstr_attr(");\r
- else err("$[..] use invalid in C++ mode");\r
- zzmore();\r
- >>\r
-#token "$[0-9]+" <<{\r
- static char buf[100];\r
- numericActionLabel=1; /* MR10 */\r
- if ( strlen(zzbegexpr)>(size_t)85 )\r
- fatal("$i attrib ref too big");\r
- set_orel(atoi(zzbegexpr+1), &attribsRefdFromAction);\r
- if ( !GenCC ) sprintf(buf,"zzaArg(zztasp%d,%s)",\r
- BlkLevel-1,zzbegexpr+1);\r
- else sprintf(buf,"_t%d%s",\r
- BlkLevel-1,zzbegexpr+1);\r
- zzreplstr(buf);\r
- zzmore();\r
- UsedOldStyleAttrib = 1;\r
- if ( UsedNewStyleLabel )\r
- err("cannot mix old-style $i with new-style labels");\r
- }\r
- >>\r
-#token "$[0-9]+." <<{\r
- static char buf[100];\r
- numericActionLabel=1; /* MR10 */\r
- if ( strlen(zzbegexpr)>(size_t)85 )\r
- fatal("$i.field attrib ref too big");\r
- zzbegexpr[strlen(zzbegexpr)-1] = ' ';\r
- set_orel(atoi(zzbegexpr+1), &attribsRefdFromAction);\r
- if ( !GenCC ) sprintf(buf,"zzaArg(zztasp%d,%s).",\r
- BlkLevel-1,zzbegexpr+1);\r
- else sprintf(buf,"_t%d%s.",\r
- BlkLevel-1,zzbegexpr+1);\r
- zzreplstr(buf);\r
- zzmore();\r
- UsedOldStyleAttrib = 1;\r
- if ( UsedNewStyleLabel )\r
- err("cannot mix old-style $i with new-style labels");\r
- }\r
- >>\r
-#token "$[0-9]+.[0-9]+" <<{\r
- static char buf[100];\r
- static char i[20], j[20];\r
- char *p,*q;\r
- numericActionLabel=1; /* MR10 */\r
- if (strlen(zzbegexpr)>(size_t)85) fatal("$i.j attrib ref too big");\r
- for (p=zzbegexpr+1,q= &i[0]; *p!='.'; p++) {\r
- if ( q == &i[20] )\r
- fatalFL("i of $i.j attrib ref too big",\r
- FileStr[CurFile], zzline );\r
- *q++ = *p;\r
- }\r
- *q = '\0';\r
- for (p++, q= &j[0]; *p!='\0'; p++) {\r
- if ( q == &j[20] )\r
- fatalFL("j of $i.j attrib ref too big",\r
- FileStr[CurFile], zzline );\r
- *q++ = *p;\r
- }\r
- *q = '\0';\r
- if ( !GenCC ) sprintf(buf,"zzaArg(zztasp%s,%s)",i,j);\r
- else sprintf(buf,"_t%s%s",i,j);\r
- zzreplstr(buf);\r
- zzmore();\r
- UsedOldStyleAttrib = 1;\r
- if ( UsedNewStyleLabel )\r
- err("cannot mix old-style $i with new-style labels");\r
- }\r
- >>\r
-#token "$[_a-zA-Z][_a-zA-Z0-9]*"\r
- <<{ static char buf[300]; LabelEntry *el;\r
- zzbegexpr[0] = ' ';\r
- if ( CurRule != NULL &&\r
- strcmp(CurRule, &zzbegexpr[1])==0 ) {\r
- if ( !GenCC ) zzreplstr("zzaRet");\r
- }\r
- else if ( CurRetDef != NULL &&\r
- strmember(CurRetDef, &zzbegexpr[1])) {\r
- if ( hasMultipleOperands( CurRetDef ) ) {\r
- require (strlen(zzbegexpr)<=(size_t)285,\r
- "$retval attrib ref too big");\r
- sprintf(buf,"_retv.%s",&zzbegexpr[1]);\r
- zzreplstr(buf);\r
- }\r
- else zzreplstr("_retv");\r
- }\r
- else if ( CurParmDef != NULL &&\r
- strmember(CurParmDef, &zzbegexpr[1])) {\r
- ;\r
- }\r
- else if ( Elabel==NULL ) {\r
- { err("$-variables in actions outside of rules are not allowed"); }\r
- } else if ( (el=(LabelEntry *)hash_get(Elabel, &zzbegexpr[1]))!=NULL ) {\r
-/* MR10 */\r
-/* MR10 */ /* element labels might exist without an elem when */\r
-/* MR10 */ /* it is a forward reference (to a rule) */\r
-/* MR10 */\r
-/* MR10 */ if ( GenCC && (el->elem == NULL || el->elem->ntype==nRuleRef) )\r
-/* MR10 */ { err(eMsg1("There are no token ptrs for rule references: '$%s'",&zzbegexpr[1])); }\r
-/* MR10 */\r
-/* MR10 */ if ( !GenCC && (el->elem == NULL || el->elem->ntype==nRuleRef) && GenAST) {\r
-/* MR10 */ err("You can no longer use attributes returned by rules when also using ASTs");\r
-/* MR10 */ err(" Use upward inheritance (\"rule >[Attrib a] : ... <<$a=...\>\>\")");\r
-/* MR10 */ };\r
-/* MR10 */\r
-/* MR10 */ /* keep track of <<... $label ...>> for semantic predicates in guess mode */\r
-/* MR10 */ /* element labels contain pointer to the owners node */\r
-/* MR10 */\r
-/* MR10 */ if (el->elem != NULL && el->elem->ntype == nToken) {\r
-/* MR10 */ list_add(&CurActionLabels,el);\r
-/* MR10 */ };\r
- }\r
- else\r
- warn(eMsg1("$%s not parameter, return value, (defined) element label",&zzbegexpr[1]));\r
- }\r
- zzmore();\r
- >>\r
-#token "#0" << zzreplstr("(*_root)"); zzmore(); chkGTFlag(); >>\r
-#token "#\[\]" << if ( GenCC ) {\r
- if (NewAST) zzreplstr("(newAST)");\r
- else zzreplstr("(new AST)");}\r
- else {zzreplstr("zzastnew()");} zzmore();\r
- chkGTFlag();\r
- >>\r
-#token "#\(\)" << zzreplstr("NULL"); zzmore(); chkGTFlag(); >>\r
-#token "#[0-9]+" <<{\r
- static char buf[100];\r
- if ( strlen(zzbegexpr)>(size_t)85 )\r
- fatal("#i AST ref too big");\r
- if ( GenCC ) sprintf(buf,"_ast%d%s",BlkLevel-1,zzbegexpr+1);\r
- else sprintf(buf,"zzastArg(%s)",zzbegexpr+1);\r
- zzreplstr(buf);\r
- zzmore();\r
- set_orel(atoi(zzbegexpr+1), &AST_nodes_refd_in_actions);\r
- chkGTFlag();\r
- }\r
- >>\r
-\r
-/* MR14 Arpad Beszedes 26-May-98\r
- Add support for #line directives when antlr source is pre-processed\r
- #lexclass ACTIONS\r
-*/\r
-\r
-#token "#line[\ \t]* [0-9]+ {[\ \t]* \"~[\"]+\" ([\ \t]* [0-9]*)* } (\n|\r|\r\n)"\r
- <<\r
- zzline = atoi(zzbegexpr+5) - 1; zzline++; zzmore();\r
- getFileNameFromTheLineInfo(FileStr[CurFile], zzbegexpr);\r
- >>\r
-\r
-#token "#line ~[\n\r]* (\n|\r|\r\n)"\r
- <<\r
- zzline++; zzmore();\r
- >>\r
-\r
-/* MR14 end of a block to support #line in antlr source code */\r
-\r
-#token "#[_a-zA-Z][_a-zA-Z0-9]*"\r
- <<\r
- if ( !(strcmp(zzbegexpr, "#ifdef")==0 ||\r
- strcmp(zzbegexpr, "#if")==0 ||\r
- strcmp(zzbegexpr, "#else")==0 ||\r
- strcmp(zzbegexpr, "#endif")==0 ||\r
- strcmp(zzbegexpr, "#ifndef")==0 ||\r
- strcmp(zzbegexpr, "#define")==0 ||\r
- strcmp(zzbegexpr, "#pragma")==0 ||\r
- strcmp(zzbegexpr, "#undef")==0 ||\r
- strcmp(zzbegexpr, "#import")==0 ||\r
- strcmp(zzbegexpr, "#line")==0 ||\r
- strcmp(zzbegexpr, "#include")==0 ||\r
- strcmp(zzbegexpr, "#error")==0) )\r
- {\r
- static char buf[100];\r
- sprintf(buf, "%s_ast", zzbegexpr+1);\r
-/* MR27 */ list_add(&CurAstLabelsInActions, mystrdup(zzbegexpr+1));\r
- zzreplstr(buf);\r
- chkGTFlag();\r
- }\r
- zzmore();\r
- >>\r
-#token "#\[" <<\r
- pushint(']');\r
- if ( GenCC ) {\r
- if (NewAST) zzreplstr("(newAST(");\r
- else zzreplstr("(new AST("); }\r
- else zzreplstr("zzmk_ast(zzastnew(),");\r
- zzmore();\r
- chkGTFlag();\r
- >>\r
-#token "#\(" <<\r
- pushint('}');\r
- if ( GenCC ) {\r
- if (tmakeInParser) {\r
- zzreplstr("tmake(");\r
- }\r
- else {\r
- zzreplstr("ASTBase::tmake(");\r
- }\r
- }\r
- else {\r
- zzreplstr("zztmake(");\r
- }\r
- zzmore();\r
- chkGTFlag();\r
- >>\r
-#token "#" << zzmore(); >>\r
-#token "\)" <<\r
- if ( istackempty() )\r
- zzmore();\r
- else if ( topint()==')' ) {\r
- popint();\r
- }\r
- else if ( topint()=='}' ) {\r
- popint();\r
- /* terminate #(..) */\r
- zzreplstr(", NULL)");\r
- }\r
- zzmore();\r
- >>\r
-#token "\[" <<\r
- pushint('|'); /* look for '|' to terminate simple [...] */\r
- zzmore();\r
- >>\r
-#token "\(" <<\r
- pushint(')');\r
- zzmore();\r
- >>\r
-\r
-#token "\\\]" << zzreplstr("]"); zzmore(); >>\r
-#token "\\\)" << zzreplstr(")"); zzmore(); >>\r
-\r
-/* MR1 10-Apr-97 MR1 Previously unable to put right shift operator */\r
-/* MR1 in DLG action */\r
-\r
-#token "\\>" << if (! tokenActionActive) zzreplstr(">"); /* MR1 */\r
- zzmore(); /* MR1 */\r
- >> /* MR1 */\r
-\r
-\r
-#token "'" << zzmode(ACTION_CHARS); zzmore();>>\r
-#token "\"" << zzmode(ACTION_STRINGS); zzmore();>>\r
-#token "\\$" << zzreplstr("$"); zzmore(); >>\r
-#token "\\#" << zzreplstr("#"); zzmore(); >>\r
-#token "\\(\n|\r|\r\n)" << zzline++; zzmore(); >>\r
-#token "\\~[\]\)>$#]" << zzmore(); >> /* escaped char, always ignore */\r
-#token "/" << zzmore(); >>\r
-#token "/\*" << zzmode(ACTION_COMMENTS); zzmore(); >>\r
-#token "\*/" << warn("Missing /*; found dangling */ in action"); zzmore(); >>\r
-#token "//" << zzmode(ACTION_CPP_COMMENTS); zzmore(); >>\r
-#token "~[\n\r\)\(\\$#\>\]\[\"'/]+" << zzmore(); >>\r
-\r
-#lexclass START\r
-#token "[\t\ ]+" << zzskip(); >> /* Ignore White */\r
-#token "\n|\r|\r\n" << zzline++; zzskip(); >> /* Track Line # */\r
-#token "\[" << zzmode(ACTIONS); zzmore();\r
- istackreset();\r
- pushint(']'); >>\r
-#token "\<\<" << action_file=CurFile; action_line=zzline;\r
- zzmode(ACTIONS); zzmore();\r
- list_free(&CurActionLabels,0); /* MR10 */\r
- numericActionLabel=0; /* MR10 */\r
- istackreset();\r
- pushint('>'); >>\r
-#token "\"" << zzmode(STRINGS); zzmore(); >>\r
-#token "/\*" << zzmode(COMMENTS); zzskip(); >>\r
-#token "\*/" << warn("Missing /*; found dangling */"); zzskip(); >>\r
-#token "//" << zzmode(CPP_COMMENTS); zzskip(); >>\r
-\r
-/* MR14 Arpad Beszedes 26-May-98\r
- Add support for #line directives when antlr source is pre-processed\r
- #lexclass START\r
-*/\r
-\r
-#token "#line[\ \t]* [0-9]+ {[\ \t]* \"~[\"]+\" ([\ \t]* [0-9]*)* } (\n|\r|\r\n)"\r
- <<\r
- zzline = atoi(zzbegexpr+5) - 1; zzline++; zzmore();\r
- getFileNameFromTheLineInfo(FileStr[CurFile], zzbegexpr);\r
- >>\r
-\r
-#token "#line ~[\n\r]* (\n|\r|\r\n)"\r
- <<\r
- zzline++; zzmore();\r
- >>\r
-\r
-/* MR14 end of a block to support #line in antlr source code */\r
-\r
-/* */\r
-/* 8-Apr-97 Regularize escape sequence for ">>" */\r
-/* appearing in string literals */\r
-/* */\r
-\r
-#token "\>\>" << warn("Missing <<; found dangling \>\>"); zzskip(); >> /* MR1 */\r
-#token WildCard "."\r
-#token "\@" <<FoundException = 1; /* MR6 */\r
- FoundAtOperator = 1;>> /* MR6 */\r
-#token Eof "@"\r
- << /* L o o k F o r A n o t h e r F i l e */\r
- {\r
- FILE *new_input;\r
- new_input = NextFile();\r
- if ( new_input == NULL ) { NLA=Eof; return; }\r
- fclose( input );\r
- input = new_input;\r
- zzrdstream( input );\r
- zzskip(); /* Skip the Eof (@) char i.e continue */\r
- }\r
- >>\r
-\r
-#token LABEL\r
-\r
-#errclass "grammar-element" { element }\r
-#errclass "meta-symbol" { "\}" "!" ";" "\|" "\~" "^" "\)" }\r
-\r
-#token Pragma "{\\}#pragma" /* MR21 */\r
-#token FirstSetSymbol "{\\}#FirstSetSymbol" /* MR21 */\r
-/*\r
- * Get a grammar -- Build a list of rules like:\r
- *\r
- * o-->Rule1--o\r
- * |\r
- * o-->Rule2--o\r
- * |\r
- * ...\r
- * |\r
- * o-->RuleN--o\r
- */\r
-\r
-/* rule grammar */\r
-\r
-grammar : <<Graph g;>>\r
- ( "{\\}#header" Action /* MR13 */\r
- <<\r
- if ( HdrAction==NULL ) {\r
- HdrAction = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(HdrAction!=NULL, "rule grammar: cannot allocate header action");\r
- strcpy(HdrAction, LATEXT(1));\r
- }\r
- else warn("additional #header statement ignored");\r
- >>\r
- | "{\\}#first" Action\r
- <<\r
- if ( FirstAction==NULL ) {\r
- FirstAction = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(FirstAction!=NULL, "rule grammar: cannot allocate #first action");\r
- strcpy(FirstAction, LATEXT(1));\r
- } else {\r
- warn("additional #first statement ignored");\r
- };\r
- >>\r
-\r
- | "{\\}#parser" QuotedTerm\r
- <<\r
- if ( GenCC ) {\r
- warn("#parser meta-op incompatible with -CC; ignored");\r
- }\r
- else {\r
- if ( strcmp(ParserName,"zzparser")==0 ) {\r
- ParserName=StripQuotes(mystrdup(LATEXT(1)));\r
- if ( RulePrefix[0]!='\0' )\r
- {\r
- warn("#parser meta-op incompatible with '-gp prefix'; '-gp' ignored");\r
- RulePrefix[0]='\0';\r
- }\r
- }\r
- else warn("additional #parser statement ignored");\r
- }\r
- >>\r
- | "{\\}#tokdefs" QuotedTerm\r
- <<{\r
- char *fname;\r
- zzantlr_state st; FILE *f; struct zzdlg_state dst;\r
- UserTokenDefsFile = mystrdup(LATEXT(1));\r
- zzsave_antlr_state(&st);\r
- zzsave_dlg_state(&dst);\r
- fname = mystrdup(LATEXT(1));\r
- f = fopen(StripQuotes(fname), "r");\r
- if ( f==NULL ) {warn(eMsg1("cannot open token defs file '%s'", fname+1));}\r
- else {\r
- ANTLRm(enum_file(fname+1), f, PARSE_ENUM_FILE);\r
- UserDefdTokens = 1;\r
- }\r
- zzrestore_antlr_state(&st);\r
- zzrestore_dlg_state(&dst);\r
- }>>\r
- )*\r
- ( Action\r
- <<{\r
- UserAction *ua = newUserAction(LATEXT(1));\r
- ua->file = action_file; ua->line = action_line;\r
- if ( class_nest_level>0 ) list_add(&class_before_actions, ua);\r
- else list_add(&BeforeActions, ua);\r
- }>>\r
- | laction\r
- | lmember /* MR1 */\r
- | lprefix /* MR1 */\r
- | aLexclass\r
- | token\r
- | error\r
- | tclass\r
- | aPred /* MR11 */\r
- | default_exception_handler\r
- | class_def\r
- | "\}"\r
- <<\r
- if ( class_nest_level==0 )\r
- warn("missing class definition for trailing '}'");\r
- class_nest_level--;\r
- >>\r
- )*\r
- \r
- rule <<g=$3; SynDiag = (Junction *) $3.left;>>\r
- ( rule\r
-\r
- <<if ( $1.left!=NULL ) {\r
- g.right = NULL;\r
-\r
-/* MR21a */ /* Avoid use of a malformed graph when CannotContinue */\r
-/* MR21a */ /* is already set */\r
-/* MR21a */\r
-/* MR21a */ if (! (CannotContinue && g.left == NULL)) {\r
-/* MR21a */ g = Or(g, $1);\r
-/* MR21a */ }\r
-/* MR21a */ }\r
- >>\r
-\r
- | aLexclass\r
- | token\r
- | error\r
- | tclass\r
- | aPred /* MR11 */\r
- | class_def\r
- | "\}"\r
- <<\r
- if ( class_nest_level==0 )\r
- warn("missing class definition for trailing '}'");\r
- class_nest_level--;\r
- >>\r
- )*\r
- ( Action\r
- <<{\r
- UserAction *ua = newUserAction(LATEXT(1));\r
- ua->file = action_file; ua->line = action_line;\r
- if ( class_nest_level>0 ) list_add(&class_after_actions, ua);\r
- else list_add(&AfterActions, ua);\r
- }>>\r
- | laction\r
- | lmember /* MR1 */\r
- | lprefix /* MR1 */\r
- | error\r
- | tclass\r
- | class_def\r
- | aPred /* MR11 */\r
- | "\}"\r
- <<\r
- if ( class_nest_level==0 )\r
- warn("missing class definition for trailing '}'");\r
- class_nest_level--;\r
- >>\r
- )*\r
- Eof\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule class_def */\r
-\r
-class_def\r
- : <<int go=1; char name[MaxRuleName+1];>>\r
- "class"\r
- ( NonTerminal <<if(go) strncpy(name,LATEXT(1),MaxRuleName);>>\r
- | TokenTerm <<if(go) strncpy(name,LATEXT(1),MaxRuleName);>>\r
- )\r
- <<\r
- if ( CurrentClassName[0]!='\0' && strcmp(CurrentClassName,name)!=0\r
- && GenCC ) {\r
- err("only one grammar class allowed in this release");\r
- go = 0;\r
- }\r
- else strcpy(CurrentClassName, name);\r
- >>\r
- <<if ( !GenCC ) { err("class meta-op used without C++ option"); }>>\r
-\r
-/* MR10 */ (~ "\{"\r
-/* MR10 */ <<if (ClassDeclStuff == NULL) {\r
-/* MR10 */ ClassDeclStuff=(char *)calloc(MaxClassDeclStuff+1,sizeof(char));\r
-/* MR10 */ };\r
-/* MR10 */ strncat(ClassDeclStuff," ",MaxClassDeclStuff);\r
-/* MR10 */ strncat(ClassDeclStuff,LATEXT(1),MaxClassDeclStuff);\r
-/* MR22 */ do {\r
-/* MR22 */ if (0 == strcmp(LATEXT(1),"public")) break;\r
-/* MR22 */ if (0 == strcmp(LATEXT(1),"private")) break;\r
-/* MR22 */ if (0 == strcmp(LATEXT(1),"protected")) break;\r
-/* MR22 */ if (0 == strcmp(LATEXT(1),"virtual")) break;\r
-/* MR22 */ if (0 == strcmp(LATEXT(1),",")) break;\r
-/* MR22 */ if (0 == strcmp(LATEXT(1),":")) break;\r
-/* MR22 */ if (BaseClassName != NULL) break;\r
-/* MR22 */ BaseClassName=(char *)calloc(strlen(LATEXT(1))+1,sizeof(char));\r
-/* MR22 */ require(BaseClassName!=NULL, "rule grammar: cannot allocate base class name");\r
-/* MR22 */ strcpy(BaseClassName,LATEXT(1));\r
-/* MR22 */ } while (0);\r
-/* MR10 */ >>\r
-/* MR10 */ )*\r
-\r
- "\{"\r
- <<\r
- no_classes_found = 0;\r
- if ( class_nest_level>=1 ) {warn("cannot have nested classes");}\r
- else class_nest_level++;\r
- >>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/*\r
- * Build -o-->o-R-o-->o- where -o-R-o- is the block from rule 'block'.\r
- * Construct the RuleBlk front and EndRule node on the end of the\r
- * block. This is used to add FOLLOW pointers to the rule end. Add the\r
- * new rule name to the Rname hash table and sets its rulenum.\r
- * Store the parameter definitions if any are found.\r
- *\r
- * Note that locks are required on the RuleBlk and EndRule nodes to thwart\r
- * infinite recursion.\r
- *\r
- * Return the left graph pointer == NULL to indicate error/dupl rule def.\r
- */\r
-\r
-/* rule rule */\r
-\r
-rule : <<\r
-\r
- ExceptionGroup *eg;\r
- RuleEntry *q; Junction *p; Graph r; int f, l; ECnode *e;\r
- set toksrefd, rulesrefd;\r
- char *pdecl=NULL, *ret=NULL, *a; CurRetDef = CurParmDef = NULL;\r
- CurExGroups = NULL;\r
- CurElementLabels = NULL;\r
- CurAstLabelsInActions = NULL; /* MR27 */\r
- /* We want a new element label hash table for each rule */\r
- if ( Elabel!=NULL ) killHashTable(Elabel);\r
- Elabel = newHashTable();\r
- attribsRefdFromAction = empty;\r
- >>\r
- NonTerminal\r
- <<q=NULL;\r
- if ( hash_get(Rname, LATEXT(1))!=NULL ) {\r
- err(eMsg1("duplicate rule definition: '%s'",LATEXT(1)));\r
- CannotContinue=TRUE;\r
- }\r
- else\r
- {\r
- q = (RuleEntry *)hash_add(Rname,\r
- LATEXT(1),\r
- (Entry *)newRuleEntry(LATEXT(1)));\r
- CurRule = q->str;\r
- }\r
- CurRuleNode = q;\r
- f = CurFile; l = zzline;\r
- NumRules++;\r
- >>\r
- { "!" <<if ( q!=NULL ) q->noAST = TRUE;>> }\r
- { <<;>>\r
- {"\<"}\r
- PassAction\r
- << pdecl = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(pdecl!=NULL, "rule rule: cannot allocate param decl");\r
- strcpy(pdecl, LATEXT(1));\r
- CurParmDef = pdecl;\r
- >>\r
- }\r
- { "\>"\r
- PassAction\r
- << ret = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(ret!=NULL, "rule rule: cannot allocate ret type");\r
- strcpy(ret, LATEXT(1));\r
- CurRetDef = ret;\r
- >>\r
- }\r
- { QuotedTerm <<if ( q!=NULL ) q->egroup=mystrdup(LATEXT(1));>> }\r
- <<\r
- if ( GenEClasseForRules && q!=NULL ) {\r
- e = newECnode;\r
- require(e!=NULL, "cannot allocate error class node");\r
- if ( q->egroup == NULL ) {a = q->str; a[0] = (char)toupper(a[0]);}\r
- else a = q->egroup;\r
- if ( Tnum( a ) == 0 )\r
- {\r
- e->tok = addTname( a );\r
- list_add(&eclasses, (char *)e);\r
- if ( q->egroup == NULL ) a[0] = (char)tolower(a[0]);\r
- /* refers to itself */\r
- list_add(&(e->elist), mystrdup(q->str));\r
- }\r
- else {\r
- warn(eMsg1("default errclass for '%s' would conflict with token/errclass/tokclass",a));\r
- if ( q->egroup == NULL ) a[0] = (char)tolower(a[0]);\r
- free((char *)e);\r
- }\r
- }\r
- >>\r
- <<BlkLevel++;\r
- if (BlkLevel >= MAX_BLK_LEVEL) fatal("Blocks nested too deeply");\r
-/* MR23 */ CurBlockID_array[BlkLevel] = CurBlockID;\r
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum; \r
- >>\r
-\r
- ":" <<inAlt=1;>>\r
- block[&toksrefd, &rulesrefd]\r
- <<r = makeBlk($7,0, NULL /* pFirstSetSymbol */ );\r
- CurRuleBlk = (Junction *)r.left;\r
- CurRuleBlk->blockid = CurBlockID;\r
- CurRuleBlk->jtype = RuleBlk;\r
- if ( q!=NULL ) CurRuleBlk->rname = q->str;\r
- CurRuleBlk->file = f;\r
- CurRuleBlk->line = l;\r
- CurRuleBlk->pdecl = pdecl;\r
- CurRuleBlk->ret = ret;\r
- CurRuleBlk->lock = makelocks();\r
- CurRuleBlk->pred_lock = makelocks();\r
- CurRuleBlk->tokrefs = toksrefd;\r
- CurRuleBlk->rulerefs = rulesrefd;\r
- p = newJunction(); /* add EndRule Node */\r
- ((Junction *)r.right)->p1 = (Node *)p;\r
- r.right = (Node *) p;\r
- p->jtype = EndRule;\r
- p->lock = makelocks();\r
- p->pred_lock = makelocks();\r
- CurRuleBlk->end = p;\r
- if ( q!=NULL ) q->rulenum = NumRules;\r
- $7 = r;\r
- >>\r
- <<\r
- /* MR23 */ CurBlockID_array[BlkLevel] = (-1);\r
- /* MR23 */ CurAltNum_array[BlkLevel] = (-1); \r
- --BlkLevel;\r
- >>\r
- <<altFixup();leFixup();egFixup();>> /* MR7 */\r
- ";" <<inAlt=0;>>\r
- { Action\r
- << a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(a!=NULL, "rule rule: cannot allocate error action");\r
- strcpy(a, LATEXT(1));\r
- CurRuleBlk->erraction = a;\r
- >>\r
- }\r
- ( exception_group > [eg]\r
- <<if ( eg!=NULL ) {\r
- list_add(&CurExGroups, (void *)eg);\r
- if (eg->label == NULL || *eg->label=='\0' ) q->has_rule_exception = 1;\r
- }\r
- >>\r
- )*\r
- <<if ( q==NULL ) $0.left = NULL; else $0 = $7;>>\r
- <<CurRuleBlk->exceptions = CurExGroups;>>\r
- <<CurRuleBlk->el_labels = CurElementLabels;>>\r
- <<CurRuleNode->ast_labels_in_actions = CurAstLabelsInActions;>> /* MR27 */\r
- <<CurRuleNode = NULL;>> /* MR27 Moved */\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/*\r
- * pragma : "{\\}#pragma" "dup\-labeled\-tokens"\r
- * <<Pragma_DupLabeledTokens=1;>>\r
- * ;\r
- */\r
-\r
-/* rule laction */\r
-\r
-laction : <<char *a;>>\r
-\r
- "{\\}#lexaction"\r
- Action\r
- <<\r
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(a!=NULL, "rule laction: cannot allocate action");\r
- strcpy(a, LATEXT(1));\r
- list_add(&LexActions, a);\r
- >>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* MR1 */\r
-/* MR1 11-Apr-97 Provide mechanism for inserting code into DLG class */\r
-/* MR1 via #lexmember <<....>> & #lexprefix <<...>> */\r
-/* MR1 */\r
-\r
-/* rule lmember */\r
-\r
-lmember: <<char *a;>> /* MR1 */\r
-\r
-/* MR1 */ "{\\}#lexmember"\r
-/* MR1 */ Action\r
-/* MR1 */ <<\r
-/* MR1 */ if (! GenCC) {\r
-/* MR1 */ err("Use #lexmember only in C++ mode (to insert code in DLG class header");\r
-/* MR1 */ } else {\r
-/* MR1 */ a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
-/* MR1 */ require(a!=NULL, "rule lmember: cannot allocate action");\r
-/* MR1 */ strcpy(a, LATEXT(1));\r
-/* MR1 */ list_add(&LexMemberActions, a);\r
-/* MR1 */ };\r
-/* MR1 */ >>\r
-/* MR1 */ ;\r
-/* MR1 */ <<CannotContinue=TRUE;>>\r
-\r
-/* rule lprefix */\r
-\r
-lprefix: <<char *a;>> /* MR1 */\r
-\r
-/* MR1 */ "{\\}#lexprefix"\r
-/* MR1 */ Action\r
-/* MR1 */ <<\r
-/* MR1 */ if (! GenCC) {\r
-/* MR1 */ err("Use #lexprefix only in C++ mode (to insert code in DLG class header");\r
-/* MR1 */ } else {\r
-/* MR1 */ a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
-/* MR1 */ require(a!=NULL, "rule lprefix: cannot allocate action");\r
-/* MR1 */ strcpy(a, LATEXT(1));\r
-/* MR1 */ list_add(&LexPrefixActions, a);\r
-/* MR1 */ };\r
-/* MR1 */ >>\r
-/* MR1 */ ;\r
-/* MR1 */ <<CannotContinue=TRUE;>>\r
-\r
-/*\r
- * #pred upper <<isupper()>>? predicate literal\r
- * #pred lower <<islower()>>? predicate literal\r
- * #pred up_or_low upper || lower predicate expression\r
- * concealed interdependence\r
- * #pred up_or_low_2 <<isletter()>>? A || B predicate literal equals predicate expr\r
- * analyze using lower||upper\r
- * generate using isLetter()\r
- */\r
-\r
-/* rule aPref */\r
-\r
-aPred: <<PredEntry *predEntry=NULL;\r
- char *name=NULL;\r
- Predicate *predExpr=NULL;\r
- char *predLiteral=NULL;\r
- int save_file;\r
- int save_line;\r
- int predExprPresent=0;\r
- >>\r
-\r
- "{\\}#pred"\r
-\r
- <<\r
- MR_usingPredNames=1; /* will need to use -mrhoist version of genPredTree */\r
- >>\r
-\r
- /* used to allow NonTerminal but it caused problems\r
- when a rule name immediately followed a #pred statement */\r
-\r
- TokenTerm <<name=mystrdup(LATEXT(1));>>\r
-\r
- <<\r
- /* don't free - referenced in predicates */\r
-\r
- CurPredName=(char *)calloc(1,strlen(name) + 10);\r
- strcat(CurPredName,"#pred ");\r
- strcat(CurPredName,name);\r
-\r
- predEntry=(PredEntry *) hash_get(Pname,name);\r
- if (predEntry != NULL) {\r
- warnFL(eMsg1("#pred %s previously defined - ignored",name),\r
- FileStr[action_file],action_line);\r
- name=NULL;\r
- };\r
- >>\r
-\r
- (\r
-\r
- Pred <<predLiteral=mystrdup(LATEXT(1));\r
- save_line=action_line;\r
- save_file=action_file;\r
- >>\r
-\r
- {\r
- predOrExpr>[predExpr] <<predExprPresent=1;>>\r
- }\r
-\r
- <<if (predLiteral != NULL && name != NULL) {\r
-\r
- /*\r
- * predExpr may be NULL due to syntax errors\r
- * or simply omitted by the user\r
- */\r
-\r
- predEntry=newPredEntry(name);\r
- predEntry->file=save_file;\r
- predEntry->line=save_line;\r
- predExpr=MR_predFlatten(predExpr);\r
- predEntry->predLiteral=predLiteral;\r
- if (! predExprPresent || predExpr == NULL) {\r
- predExpr=new_pred();\r
- predExpr->expr=predLiteral;\r
- predExpr->source=newActionNode();\r
- predExpr->source->action=predExpr->expr;\r
- predExpr->source->rname=CurPredName;\r
- predExpr->source->line=action_line;\r
- predExpr->source->file=action_file;\r
- predExpr->source->is_predicate=1;\r
- predExpr->k=predicateLookaheadDepth(predExpr->source);\r
- };\r
- predEntry->pred=predExpr;\r
- hash_add(Pname,name,(Entry *)predEntry);\r
- predExpr=NULL;\r
- };\r
- predicate_free(predExpr);\r
- >>\r
-\r
- |\r
- <<save_line=zzline; save_file=CurFile;>>\r
-\r
- predOrExpr>[predExpr]\r
-\r
- <<if (predExpr != NULL && name != NULL) {\r
- predEntry=newPredEntry(name);\r
- predEntry->file=CurFile;\r
- predEntry->line=zzline;\r
- predExpr=MR_predFlatten(predExpr);\r
- predEntry->pred=predExpr;\r
- hash_add(Pname,name,(Entry *)predEntry);\r
- predExpr=NULL;\r
- };\r
- predicate_free(predExpr);\r
- >>\r
- )\r
- {";"}\r
-;\r
-\r
-/* fail */\r
-\r
-<<predicate_free(predExpr);\r
->>\r
-\r
-/* rule predOrExpr */\r
-\r
-predOrExpr>[Predicate *result] :\r
- <<Predicate *ORnode;\r
- Predicate *predExpr;\r
- Predicate **tail=NULL;\r
- >>\r
- predAndExpr>[predExpr]\r
- <<\r
- ORnode=new_pred();\r
- ORnode->expr=PRED_OR_LIST;\r
- if (predExpr != NULL) {\r
- ORnode->down=predExpr;\r
- tail=&predExpr->right;\r
- };\r
- >>\r
- ( "\|\|" predAndExpr>[predExpr]\r
- <<\r
- if (predExpr != NULL) {\r
- *tail=predExpr;\r
- tail=&predExpr->right;\r
- };\r
- >>\r
- )*\r
- <<\r
- $result=ORnode;\r
- ORnode=NULL;\r
- >>\r
-;\r
-\r
-/* fail */\r
-\r
-<<predicate_free(ORnode);>>\r
-\r
-/* rule predAndExpr */\r
-\r
-predAndExpr>[Predicate *result] :\r
- <<Predicate *ANDnode;\r
- Predicate *predExpr;\r
- Predicate **tail=NULL;\r
- >>\r
- predPrimary>[predExpr]\r
- <<\r
- ANDnode=new_pred();\r
- ANDnode->expr=PRED_AND_LIST;\r
- if (predExpr != NULL) {\r
- ANDnode->down=predExpr;\r
- tail=&predExpr->right;\r
- };\r
- >>\r
- ( "&&" predPrimary>[predExpr]\r
- <<\r
- if (predExpr != NULL) {\r
- *tail=predExpr;\r
- tail=&predExpr->right;\r
- };\r
- >>\r
- )*\r
- <<\r
- $result=ANDnode;\r
- ANDnode=NULL;\r
- >>\r
-;\r
-\r
-/* fail */\r
-\r
-<<predicate_free(ANDnode);>>\r
-\r
-\r
-/* rule predPrimary */\r
-\r
-predPrimary>[Predicate *result] :\r
- <<\r
- char *name=NULL;\r
- PredEntry *predEntry=NULL;\r
- Predicate *predExpr=NULL;\r
- >>\r
-\r
- TokenTerm <<name=mystrdup(LATEXT(1));>>\r
-\r
- <<\r
- predEntry=(PredEntry *) hash_get(Pname,name);\r
- if (predEntry == NULL) {\r
- warnFL(eMsg1("no previously defined #pred with name \"%s\"",name),\r
- FileStr[CurFile],zzline);\r
- name=NULL;\r
- $result=NULL;\r
- } else {\r
- predExpr=predicate_dup(predEntry->pred);\r
- predExpr->predEntry=predEntry;\r
- $result=predExpr;\r
- };\r
- >>\r
-\r
- | "\(" predOrExpr>[predExpr] "\)"\r
- <<\r
- $result=predExpr;\r
- >>\r
-\r
- | "!" predPrimary>[predExpr]\r
- <<\r
- predExpr->inverted=!predExpr->inverted;\r
- $result=predExpr;\r
- >>\r
-;\r
-\r
-/* fail */ <<\r
- predicate_free(predExpr);\r
- >>\r
-\r
-/* rule aLexclass */\r
-\r
-aLexclass: "{\\}#lexclass" TokenTerm <<lexclass(mystrdup(LATEXT(1)));>>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule error */\r
-\r
-error : <<char *t=NULL; ECnode *e; int go=1; TermEntry *p;>>\r
- "{\\}#errclass"\r
- (<<;>> TokenTerm <<t=mystrdup(LATEXT(1));>>\r
- | QuotedTerm <<t=mystrdup(LATEXT(1));>>\r
- )\r
- <<e = newECnode;\r
- require(e!=NULL, "cannot allocate error class node");\r
- e->lexclass = CurrentLexClass;\r
- if ( Tnum( (t=StripQuotes(t)) ) == 0 )\r
- {\r
- if ( hash_get(Texpr, t) != NULL )\r
- warn(eMsg1("errclass name conflicts with regular expression '%s'",t));\r
- e->tok = addTname( t );\r
- set_orel(e->tok, &imag_tokens);\r
- require((p=(TermEntry *)hash_get(Tname, t)) != NULL,\r
- "hash table mechanism is broken");\r
- p->classname = 1; /* entry is errclass name, not token */\r
- list_add(&eclasses, (char *)e);\r
- }\r
- else\r
- {\r
- warn(eMsg1("redefinition of errclass or conflict w/token or tokclass '%s'; ignored",t));\r
- free( (char *)e );\r
- go=0;\r
- }\r
- >>\r
- "\{"\r
- ( NonTerminal <<if ( go ) t=mystrdup(LATEXT(1));>>\r
- | TokenTerm <<if ( go ) t=mystrdup(LATEXT(1));>>\r
- | QuotedTerm <<if ( go ) t=mystrdup(LATEXT(1));>>\r
- )\r
- <<if ( go ) list_add(&(e->elist), t);>>\r
- (\r
- ( NonTerminal <<if ( go ) t=mystrdup(LATEXT(1));>>\r
- | TokenTerm <<if ( go ) t=mystrdup(LATEXT(1));>>\r
- | QuotedTerm <<if ( go ) t=mystrdup(LATEXT(1));>>\r
- )\r
- <<if ( go ) list_add(&(e->elist), t);>>\r
- )*\r
- "\}"\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule tclass */\r
-\r
-tclass : <<char *t=NULL; TCnode *e; int go=1,tok,totok; TermEntry *p, *term, *toterm;>>\r
- <<char *akaString=NULL; int save_file; int save_line;>>\r
- <<char *totext=NULL; >>\r
- "{\\}#tokclass" TokenTerm <<t=mystrdup(LATEXT(1));>>\r
- <<e = newTCnode;\r
- require(e!=NULL, "cannot allocate token class node");\r
- e->lexclass = CurrentLexClass;\r
- if ( Tnum( t ) == 0 )\r
- {\r
- e->tok = addTname( t );\r
- set_orel(e->tok, &imag_tokens);\r
- set_orel(e->tok, &tokclasses);\r
- require((p=(TermEntry *)hash_get(Tname, t)) != NULL,\r
- "hash table mechanism is broken");\r
- p->classname = 1; /* entry is class name, not token */\r
- p->tclass = e; /* save ptr to this tclass def */\r
- list_add(&tclasses, (char *)e);\r
- }\r
- else\r
- {\r
- warn(eMsg1("redefinition of tokclass or conflict w/token '%s'; ignored",t));\r
- free( (char *)e );\r
- go=0;\r
- }\r
- >>\r
-/* MR23 */ {\r
-/* MR23 */ "\("\r
-/* MR23 */ QuotedTerm\r
-/* MR23 */ <<akaString=mystrdup(StripQuotes(LATEXT(1)));\r
-/* MR11 */ save_file=CurFile;save_line=zzline;\r
-/* MR23 */ >>\r
-/* MR23 */ "\)"\r
-/* MR23 */ }\r
-/* MR23 */\r
-/* MR23 */\r
-/* MR23 */ <<\r
-/* MR23 */ if (p!= NULL && akaString != NULL) {\r
-/* MR23 */ if (p->akaString != NULL) {\r
-/* MR23 */ if (strcmp(p->akaString,akaString) != 0) {\r
-/* MR23 */ warnFL(eMsg2("this #tokclass statment conflicts with a previous #tokclass %s(\"%s\") statement",\r
-/* MR23 */ t,p->akaString),\r
-/* MR23 */ FileStr[save_file],save_line);\r
-/* MR23 */ };\r
-/* MR23 */ } else {\r
-/* MR23 */ p->akaString=akaString;\r
-/* MR23 */ };\r
-/* MR23 */ };\r
-/* MR23 */ >>\r
-\r
- "\{"\r
- (\r
- ( TokenTerm\r
- <<if ( go ) {\r
- term = (TermEntry *) hash_get(Tname, LATEXT(1));\r
- if ( term==NULL && UserDefdTokens ) {\r
- err("implicit token definition not allowed with #tokdefs");\r
- go = 0;\r
- }\r
- else {t=mystrdup(LATEXT(1)); tok=addTname(LATEXT(1));}\r
- }>>\r
-\r
- {\r
- ".."\r
- TokenTerm\r
-\r
- <<if ( go ) {\r
- toterm = (TermEntry *) hash_get(Tname, LATEXT(1));\r
- if ( toterm==NULL && UserDefdTokens ) {\r
- err("implicit token definition not allowed with #tokdefs");\r
- go = 0;\r
- } else {\r
- totext=mystrdup(LATEXT(1)); totok=addTname(LATEXT(1));\r
- }\r
- }\r
- >>\r
- }\r
-\r
- | QuotedTerm\r
- <<if ( go ) {\r
- term = (TermEntry *) hash_get(Texpr, LATEXT(1));\r
- if ( term==NULL && UserDefdTokens ) {\r
- err("implicit token definition not allowed with #tokdefs");\r
- go = 0;\r
- }\r
- else {t=mystrdup(LATEXT(1)); tok=addTexpr(LATEXT(1));}\r
- }>>\r
- )\r
- <<if ( go ) {\r
- if (totext == NULL) {\r
- list_add(&(e->tlist), t);\r
- } else {\r
- list_add(&(e->tlist),"..");\r
- list_add(&(e->tlist),t);\r
- list_add(&(e->tlist),totext);\r
- }\r
- totext=NULL;\r
- }\r
- >>\r
- )+ // MR15 Manfred Kogler - forbid empty #tokclass sets (was "+")\r
- "\}"\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule token */\r
-\r
-token : <<char *t=NULL, *e=NULL, *a=NULL; int tnum=0;>>\r
- <<char *akaString=NULL; TermEntry *te;int save_file=0,save_line=0;>> /* MR11 */\r
- "{\\}#token"\r
-\r
-/* MR1 10-Apr-97 MR1 Allow shift right operator in DLG actions */\r
-/* MR1 Danger when parser feedback to lexer */\r
-/* MR1 */\r
-\r
- <<tokenActionActive=1;>> /* MR1 */\r
- { TokenTerm <<t=mystrdup(LATEXT(1));>>\r
-\r
-/* MR11 */ {\r
-/* MR11 */ "\("\r
-/* MR11 */ QuotedTerm\r
-/* MR11 */ <<akaString=mystrdup(StripQuotes(LATEXT(1)));\r
-/* MR11 */ save_file=CurFile;save_line=zzline;\r
-/* MR11 */ >>\r
-/* MR11 */ "\)"\r
-/* MR11 */ }\r
-\r
- { "=" "[0-9]+" /* define the token type number */\r
- <<tnum = atoi(LATEXT(1));>>\r
- }\r
- }\r
- { QuotedTerm <<e=mystrdup(LATEXT(1));>> }\r
- { Action\r
- <<\r
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(a!=NULL, "rule token: cannot allocate action");\r
- strcpy(a, LATEXT(1));\r
- >>\r
- }\r
-\r
- { ";" } /* MR11 */\r
-\r
- <<chkToken(t, e, a, tnum);>>\r
-\r
- <<if (t != NULL) {\r
- te=(TermEntry *)hash_get(Tname,t);\r
- if (te != NULL && akaString != NULL) {\r
- if (te->akaString != NULL) {\r
- if (strcmp(te->akaString,akaString) != 0) {\r
- warnFL(eMsg2("this #token statment conflicts with a previous #token %s(\"%s\") statement",\r
- t,te->akaString),\r
- FileStr[save_file],save_line);\r
- };\r
- } else {\r
- te->akaString=akaString;\r
- };\r
- };\r
- };\r
- >>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule block */\r
-\r
-block[set *toksrefd, set *rulesrefd]\r
- : <<\r
- Graph g, b;\r
- set saveblah;\r
- int saveinalt = inAlt;\r
- ExceptionGroup *eg;\r
- *$toksrefd = empty;\r
- *$rulesrefd = empty;\r
- set_clr(AST_nodes_refd_in_actions);\r
- CurBlockID++;\r
-/* MR23 */ CurBlockID_array[BlkLevel] = CurBlockID;\r
- CurAltNum = 1;\r
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum; \r
- saveblah = attribsRefdFromAction;\r
- attribsRefdFromAction = empty;\r
- >>\r
-\r
- alt[toksrefd,rulesrefd] <<b = g = $1;>>\r
-\r
- <<\r
- if ( ((Junction *)g.left)->p1->ntype == nAction )\r
- {\r
- ActionNode *actionNode=(ActionNode *)\r
- ( ( (Junction *)g.left) ->p1);\r
- if (!actionNode->is_predicate )\r
- {\r
- actionNode->init_action = TRUE;\r
-/* MR12c */ if (actionNode->noHoist) {\r
-/* MR12c */ errFL("<<nohoist>> appears as init-action - use <<>> <<nohoist>>",\r
-/* MR12c */ FileStr[actionNode->file],actionNode->line);\r
-/* MR12c */ };\r
- }\r
- }\r
- ((Junction *)g.left)->blockid = CurBlockID;\r
- >>\r
-\r
- ( exception_group > [eg]\r
- <<\r
- if ( eg!=NULL ) {\r
-/* MR7 ***** eg->altID = makeAltID(CurBlockID,CurAltNum); *****/\r
-/* MR7 ***** CurAltStart->exception_label = eg->altID; *****/\r
- list_add(&CurExGroups, (void *)eg);\r
- }\r
- >>\r
- )*\r
- <<CurAltNum++;\r
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum;\r
- >>\r
-\r
- ( "\|" <<inAlt=1;>>\r
- alt[toksrefd,rulesrefd] <<g = Or(g, $2);>>\r
- <<\r
- ((Junction *)g.left)->blockid = CurBlockID;\r
- >>\r
-\r
- ( exception_group > [eg]\r
- <<\r
- if ( eg!=NULL ) {\r
-/* MR7 ***** eg->altID = makeAltID(CurBlockID,CurAltNum); *****/\r
-/* MR7 ***** CurAltStart->exception_label = eg->altID; *****/\r
- list_add(&CurExGroups, (void *)eg);\r
- }\r
- >>\r
- )*\r
-\r
- <<CurAltNum++;\r
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum; \r
- >>\r
-\r
- )*\r
- <<$0 = b;>>\r
- <<attribsRefdFromAction = saveblah; inAlt = saveinalt;>>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule alt */\r
-\r
-alt[set *toksrefd, set *rulesrefd]\r
- : <<int n=0; Graph g; int e_num=0, old_not=0; Node *node; set elems, dif;\r
- int first_on_line = 1, use_def_MT_handler = 0;\r
- g.left=NULL; g.right=NULL;\r
-\r
- CurAltStart = NULL;\r
- elems = empty;\r
- inAlt = 1;\r
- >>\r
- { "\@" /* handle MismatchedToken signals with default handler */\r
- <<use_def_MT_handler = 1;>>\r
- }\r
-\r
- ( <<;>> /* MR9 Removed unreferenced variable "tok" */\r
- { <<old_not=0;>> "\~" <<old_not=1;>> }\r
- element[old_not, first_on_line, use_def_MT_handler] > [node]\r
- <<if ( node!=NULL && node->ntype!=nAction ) first_on_line = 0;>>\r
- <<\r
- if ( $2.left!=NULL ) {\r
- g = Cat(g, $2);\r
- n++;\r
- if ( node!=NULL ) {\r
- if ( node->ntype!=nAction ) e_num++;\r
- /* record record number of all rule and token refs */\r
- if ( node->ntype==nToken ) {\r
- TokNode *tk = (TokNode *)((Junction *)$2.left)->p1;\r
- tk->elnum = e_num;\r
- set_orel(e_num, &elems);\r
- }\r
- else if ( node->ntype==nRuleRef ) {\r
- RuleRefNode *rn = (RuleRefNode *)((Junction *)$2.left)->p1;\r
- rn->elnum = e_num;\r
- set_orel(e_num, $rulesrefd);\r
- }\r
- }\r
- }\r
- >>\r
- )*\r
- <<if ( n == 0 ) g = emptyAlt();\r
- $0 = g;\r
- /* We want to reduce number of LT(i) calls and the number of\r
- * local attribute variables in C++ mode (for moment, later we'll\r
- * do for C also). However, if trees are being built, they\r
- * require most of the attrib variables to create the tree nodes\r
- * with; therefore, we gen a token ptr for each token ref in C++\r
- */\r
- if ( GenCC && !GenAST )\r
- {\r
- /* This now free's the temp set -ATG 5/6/95 */\r
- set temp;\r
- temp = set_and(elems, attribsRefdFromAction);\r
- set_orin($toksrefd, temp);\r
- set_free(temp);\r
- }\r
- else set_orin($toksrefd, elems);\r
- if ( GenCC ) {\r
- dif = set_dif(attribsRefdFromAction, elems);\r
- if ( set_deg(dif)>0 )\r
- err("one or more $i in action(s) refer to non-token elements");\r
- set_free(dif);\r
- }\r
- set_free(elems);\r
- set_free(attribsRefdFromAction);\r
- inAlt = 0;\r
- >>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule element_label */\r
-\r
-element_label > [LabelEntry *label]\r
- : <<TermEntry *t=NULL; LabelEntry *l=NULL; RuleEntry *r=NULL; char *lab;>>\r
- LABEL <<lab = mystrdup(LATEXT(1));>>\r
- <<\r
- UsedNewStyleLabel = 1;\r
- if ( UsedOldStyleAttrib ) err("cannot mix with new-style labels with old-style $i");\r
- t = (TermEntry *) hash_get(Tname, lab);\r
- if ( t==NULL ) t = (TermEntry *) hash_get(Texpr, lab);\r
- if ( t==NULL ) r = (RuleEntry *) hash_get(Rname, lab);\r
- if ( t!=NULL ) {\r
- err(eMsg1("label definition clashes with token/tokclass definition: '%s'", lab));\r
- $label = NULL;\r
- }\r
- else if ( r!=NULL ) {\r
- err(eMsg1("label definition clashes with rule definition: '%s'", lab));\r
- $label = NULL;\r
- }\r
- else {\r
- /* we don't clash with anybody else */\r
- l = (LabelEntry *) hash_get(Elabel, lab);\r
- if ( l==NULL ) { /* ok to add new element label */\r
- l = (LabelEntry *)hash_add(Elabel,\r
- lab,\r
- (Entry *)newLabelEntry(lab));\r
- /* add to list of element labels for this rule */\r
- list_add(&CurElementLabels, (void *)lab);\r
-/* MR7 */ leAdd(l); /* list of labels waiting for exception group definitions */\r
- $label = l;\r
- }\r
- else {\r
- err(eMsg1("label definitions must be unique per rule: '%s'", lab));\r
- $label = NULL;\r
- }\r
- }\r
- >>\r
- ":"\r
- ;\r
-\r
-/* rule element */\r
-\r
-element[int old_not, int first_on_line, int use_def_MT_handler] > [Node *node]\r
- : <<\r
- Attrib blk;\r
- Predicate *pred = NULL;\r
- int local_use_def_MT_handler=0;\r
- ActionNode *act;\r
- RuleRefNode *rr;\r
- set toksrefd, rulesrefd;\r
- TermEntry *term;\r
- TokNode *p=NULL; RuleRefNode *q; int approx=0;\r
- LabelEntry *label=NULL;\r
- int predMsgDone=0;\r
- int semDepth=0;\r
- int ampersandStyle;\r
- int height; /* MR11 */\r
- int equal_height; /* MR11 */\r
-\r
- char* pFirstSetSymbol = NULL; /* MR21 */\r
-\r
- $node = NULL;\r
- >>\r
- {element_label>[label]}\r
- ( TokenTerm\r
- <<\r
- term = (TermEntry *) hash_get(Tname, LATEXT(1));\r
- if ( term==NULL && UserDefdTokens ) {\r
- err("implicit token definition not allowed with #tokdefs");\r
- $$.left = $$.right = NULL;\r
- }\r
- else {\r
- $$ = buildToken(LATEXT(1));\r
- p=((TokNode *)((Junction *)$$.left)->p1);\r
- term = (TermEntry *) hash_get(Tname, LATEXT(1));\r
- require( term!= NULL, "hash table mechanism is broken");\r
- p->tclass = term->tclass;\r
- p->complement = $old_not;\r
- if ( label!=NULL ) {\r
- p->el_label = label->str;\r
- label->elem = (Node *)p;\r
- }\r
- }\r
- >>\r
- { ".."\r
- ( QuotedTerm\r
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>\r
- | TokenTerm\r
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>\r
- )\r
- }\r
- <<\r
- if ( p!=NULL && (p->upper_range!=0 || p->tclass || $old_not) )\r
- list_add(&MetaTokenNodes, (void *)p);\r
- >>\r
- ( "^" <<if ( p!=NULL ) p->astnode=ASTroot;>>\r
- | <<if ( p!=NULL ) p->astnode=ASTchild;>>\r
- | "!" <<if ( p!=NULL ) p->astnode=ASTexclude;>>\r
- )\r
- { "\@" <<local_use_def_MT_handler = 1;>> }\r
- <<\r
- if ( p!=NULL && $first_on_line ) {\r
- CurAltStart = (Junction *)$$.left;\r
- altAdd(CurAltStart); /* MR7 */\r
- p->altstart = CurAltStart;\r
- }\r
- if ( p!=NULL )\r
- p->use_def_MT_handler = $use_def_MT_handler || local_use_def_MT_handler;\r
- $node = (Node *)p;\r
- >>\r
- | QuotedTerm\r
- <<\r
- term = (TermEntry *) hash_get(Texpr, LATEXT(1));\r
- if ( term==NULL && UserDefdTokens ) {\r
- err("implicit token definition not allowed with #tokdefs");\r
- $$.left = $$.right = NULL;\r
- }\r
- else {\r
- $$ = buildToken(LATEXT(1)); p=((TokNode *)((Junction *)$$.left)->p1);\r
- p->complement = $old_not;\r
- if ( label!=NULL ) {\r
- p->el_label = label->str;\r
- label->elem = (Node *)p;\r
- }\r
- }\r
- >>\r
- { ".."\r
- ( QuotedTerm\r
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>\r
- | TokenTerm\r
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>\r
- )\r
- }\r
- ( "^" <<if ( p!=NULL ) p->astnode=ASTroot;>>\r
- | <<if ( p!=NULL ) p->astnode=ASTchild;>>\r
- | "!" <<if ( p!=NULL ) p->astnode=ASTexclude;>>\r
- )\r
- { "\@" <<local_use_def_MT_handler = 1;>> }\r
- <<\r
- if ( p!=NULL && (p->upper_range!=0 || p->tclass || $old_not) )\r
- list_add(&MetaTokenNodes, (void *)p);\r
- >>\r
- <<\r
- if ( $first_on_line ) {\r
- CurAltStart = (Junction *)$$.left;\r
- altAdd(CurAltStart); /* MR7 */\r
- p->altstart = CurAltStart;\r
- }\r
- if ( p!=NULL )\r
- p->use_def_MT_handler = $use_def_MT_handler || local_use_def_MT_handler;\r
- $node = (Node *)p;\r
- >>\r
-\r
- | <<if ( $old_not ) warn("~ WILDCARD is an undefined operation (implies 'nothing')");>>\r
- "."\r
- <<$$ = buildWildCard(LATEXT(1)); p=((TokNode *)((Junction *)$$.left)->p1);>>\r
- ( "^" <<p->astnode=ASTroot;>>\r
- | <<p->astnode=ASTchild;>>\r
- | "!" <<p->astnode=ASTexclude;>>\r
- )\r
- <<list_add(&MetaTokenNodes, (void *)p);>>\r
- <<\r
- if ( $first_on_line ) {\r
- CurAltStart = (Junction *)$$.left;\r
- altAdd(CurAltStart); /* MR7 */\r
- p->altstart = CurAltStart;\r
- if ( label!=NULL ) {\r
- p->el_label = label->str;\r
- label->elem = (Node *)p;\r
- }\r
- }\r
- $node = (Node *)p;\r
- >>\r
-\r
- | <<if ( $old_not ) warn("~ NONTERMINAL is an undefined operation");>>\r
- NonTerminal\r
- <<$$ = buildRuleRef(LATEXT(1));>>\r
- { "!" <<q = (RuleRefNode *) ((Junction *)$$.left)->p1;\r
- q->astnode=ASTexclude;>>\r
- }\r
- { {"\<"}\r
- PassAction <<addParm(((Junction *)$$.left)->p1, LATEXT(1));>>\r
- }\r
- <<rr=(RuleRefNode *) ((Junction *)$$.left)->p1;>>\r
- { <<char *a;>>\r
- "\>"\r
- PassAction\r
- <<\r
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(a!=NULL, "rule element: cannot allocate assignment");\r
- strcpy(a, LATEXT(1));\r
- rr->assign = a;\r
- >>\r
- }\r
- <<\r
- if ( label!=NULL ) {\r
- rr->el_label = label->str;\r
- label->elem = (Node *)rr;\r
- }\r
- if ( $first_on_line ) {\r
- CurAltStart = (Junction *)$$.left;\r
- altAdd(CurAltStart); /* MR7 */\r
- ((RuleRefNode *)((Junction *)$$.left)->p1)->altstart = CurAltStart;\r
- }\r
- $node = (Node *)rr;\r
- >>\r
- )\r
-\r
- | <<if ( $old_not ) warn("~ ACTION is an undefined operation");>>\r
- Action <<$0 = buildAction(LATEXT(1),action_file,action_line, 0);>>\r
- <<if ( $first_on_line ) { /* MR7 */\r
- CurAltStart = (Junction *)$0.left; /* MR7 */\r
- altAdd(CurAltStart); /* MR7 */\r
- };>> /* MR7 */\r
- <<$node = (Node *) ((Junction *)$0.left)->p1;>>\r
-\r
- | <<if ( $old_not ) warn("~ SEMANTIC-PREDICATE is an undefined operation");>>\r
- Pred <<$0 = buildAction(LATEXT(1),action_file,action_line, 1);>>\r
- <<act = (ActionNode *) ((Junction *)$0.left)->p1;>>\r
- <<if (numericActionLabel) { /* MR10 */\r
- list_add(&NumericPredLabels,act); /* MR10 */\r
- numericActionLabel=0; /* MR10 */\r
- }; /* MR10 */\r
- >>\r
- { <<char *a;>>\r
- PassAction\r
- <<\r
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(a!=NULL, "rule element: cannot allocate predicate fail action");\r
- strcpy(a, LATEXT(1));\r
- act->pred_fail = a;\r
- >>\r
- }\r
- <<if ( $first_on_line ) { /* MR7 */\r
- CurAltStart = (Junction *)$0.left; /* MR7 */\r
- altAdd(CurAltStart); /* MR7 */\r
- };>> /* MR7 */\r
- <<$node = (Node *)act;>>\r
-\r
- | <<if ( $old_not ) warn("~ BLOCK is an undefined operation");>>\r
- <<BlkLevel++;\r
- if (BlkLevel >= MAX_BLK_LEVEL) fatal("Blocks nested too deeply");\r
-/* MR23 */ CurBlockID_array[BlkLevel] = CurBlockID;\r
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum; \r
- >>\r
- { Pragma\r
- ( "approx" <<approx=LL_k;>>\r
- | "LL\(1\)" <<approx = 1;>> /* MR20 */\r
- | "LL\(2\)" <<approx = 2;>> /* MR20 */\r
- )\r
- }\r
-\r
-/* MR21 */ { FirstSetSymbol\r
-/* MR21 */ "\("\r
-/* MR21 */ ( NonTerminal\r
-/* MR21 */ <<\r
-/* MR21 */ pFirstSetSymbol = (char *) calloc(strlen(LATEXT(1))+1,\r
-/* MR21 */ sizeof(char));\r
-/* MR21 */ require(pFirstSetSymbol!=NULL,\r
-/* MR21 */ "cannot allocate first set name");\r
-/* MR21 */ strcpy(pFirstSetSymbol, LATEXT(1));\r
-/* MR21 */ >>\r
-/* MR21 */ | TokenTerm\r
-/* MR21 */ <<\r
-/* MR21 */ pFirstSetSymbol = (char *) calloc(strlen(LATEXT(1))+1,\r
-/* MR21 */ sizeof(char));\r
-/* MR21 */ require(pFirstSetSymbol!=NULL,\r
-/* MR21 */ "cannot allocate first set name");\r
-/* MR21 */ strcpy(pFirstSetSymbol, LATEXT(1));\r
-/* MR21 */ >>\r
-/* MR21 */ )\r
-/* MR21 */ "\)"\r
-/* MR21 */ }\r
-\r
- (\r
-\r
- "\(" block[&toksrefd,&rulesrefd] "\)"\r
- <<blk = $$ = $2;\r
- /* MR23 */ CurBlockID_array[BlkLevel] = (-1);\r
- /* MR23 */ CurAltNum_array[BlkLevel] = (-1); \r
- --BlkLevel;\r
- >>\r
-\r
- ( "\*" <<$$ = makeLoop($$,approx,pFirstSetSymbol);>>\r
- | "\+" <<$$ = makePlus($$,approx,pFirstSetSymbol);>>\r
- | "?"\r
- ( \r
- ( "=>" <<ampersandStyle=0;>>\r
- | "&&" <<ampersandStyle=1;>> /* MR10 (g)? && <<p>>? */\r
- )\r
- Pred /* generalized predicate */\r
- /* first make into a predicate */\r
- <<$$ = buildAction(LATEXT(1),action_file,action_line,1);>>\r
- <<act = (ActionNode *) ((Junction *)$$.left)->p1;>>\r
- <<semDepth=predicateLookaheadDepth(act);>> /* MR10 */\r
- <<if (numericActionLabel) { /* MR10 */\r
- list_add(&NumericPredLabels,act); /* MR10 */\r
- numericActionLabel=0; /* MR10 */\r
- }; /* MR10 */\r
- >>\r
- { <<char *a;>>\r
- PassAction\r
- <<\r
- a = (char *)calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(a!=NULL, "rule element: cannot allocate predicate fail action");\r
- strcpy(a, LATEXT(1));\r
- act->pred_fail = a;\r
- >>\r
- }\r
- <<if ($first_on_line) { /* MR7 */\r
- CurAltStart=(Junction *)$$.left; /* MR7 */\r
- altAdd(CurAltStart); /* MR7 */\r
- };>>\r
- <<$node = (Node *)act;>>\r
-\r
- /* for now, just snag context */\r
- <<\r
- pred = computePredFromContextGuard(blk,&predMsgDone); /* MR10 */\r
- if ( pred==NULL) { /* MR10 */\r
- if ( !predMsgDone) err("invalid or missing context guard"); /* MR10 */\r
- predMsgDone=1; /* MR10 */\r
- } else { /* MR10 */\r
- act->guardNodes=(Junction *)blk.left; /* MR11 */\r
- pred->expr = act->action;\r
- pred->source = act;\r
-/* MR10 */ pred->ampersandStyle = ampersandStyle; /* 0 means (g)? => ... 1 means (g)? && ... */\r
-/* MR13 */ if (pred->tcontext != NULL) {\r
-/* MR13 */ height=MR_max_height_of_tree(pred->tcontext);\r
-/* MR13 */ equal_height=MR_all_leaves_same_height(pred->tcontext,height);\r
-/* MR13 */ if (! equal_height) {\r
-/* MR13 */ errFL("in guarded predicates all tokens in the guard must be at the same height",\r
-/* MR13 */ FileStr[act->file],act->line);\r
-/* MR13 */ };\r
-/* MR13 */ }\r
-/* MR10 */ if (ampersandStyle) {\r
-/* MR10 */ act->ampersandPred = pred;\r
-/* MR11 */ if (! HoistPredicateContext) {\r
-/* MR11 */ errFL("without \"-prc on\" (guard)? && <<pred>>? ... doesn't make sense",\r
-/* MR11 */ FileStr[act->file],act->line);\r
-/* MR11 */ };\r
-/* MR10 */ } else {\r
-/* MR10 */ act->guardpred = pred;\r
-/* MR10 */ };\r
-/* MR10 */ if (pred->k != semDepth) {\r
-/* MR10 */ warn(eMsgd2("length of guard (%d) does not match the length of semantic predicate (%d)",\r
-/* MR10 */ pred->k,semDepth));\r
-/* MR10 */ };\r
- }\r
- >>\r
- | <<$$ = makeBlk($$,approx,pFirstSetSymbol);\r
- FoundGuessBlk = 1;\r
- ((Junction *) ((Junction *)$$.left)->p1)->guess=1;\r
- if ( !$first_on_line ) {\r
- err("(...)? predicate must be first element of production");\r
- }\r
- >>\r
- )\r
- | <<$$ = makeBlk($$,approx,pFirstSetSymbol);>>\r
- )\r
- <<\r
- if ( pred==NULL && !predMsgDone) { /* MR10 */\r
- ((Junction *)((Junction *)$$.left)->p1)->blockid = CurBlockID;\r
- ((Junction *)((Junction *)$$.left)->p1)->tokrefs = toksrefd;\r
- ((Junction *)((Junction *)$$.left)->p1)->rulerefs = rulesrefd;\r
- if ( $first_on_line ) { /* MR7 */\r
- CurAltStart = (Junction *)((Junction *)((Junction *)$$.left)->p1); /* MR7 */\r
- altAdd(CurAltStart); /* MR7 */\r
- }; /* MR7 */\r
- $node = (Node *) ((Junction *)$$.left)->p1;\r
- }\r
- >>\r
-\r
- | "\{" block[&toksrefd,&rulesrefd]\r
- <<$$ = makeOpt($2,approx,pFirstSetSymbol);\r
- /* MR23 */ CurBlockID_array[BlkLevel] = (-1);\r
- /* MR23 */ CurAltNum_array[BlkLevel] = (-1); \r
- --BlkLevel;\r
- >>\r
- "\}"\r
- <<\r
- ((Junction *)((Junction *)$$.left)->p1)->blockid = CurBlockID;\r
- ((Junction *)((Junction *)$$.left)->p1)->tokrefs = toksrefd;\r
- ((Junction *)((Junction *)$$.left)->p1)->rulerefs = rulesrefd;\r
- >>\r
- <<if ( $first_on_line ) { /* MR7 */\r
- CurAltStart = (Junction *) ((Junction *)((Junction *)$$.left)->p1); /* MR7 */\r
- altAdd(CurAltStart); /* MR7 */\r
- };\r
- >>\r
- <<$node = (Node *) ((Junction *)$$.left)->p1;>>\r
-\r
- )\r
-\r
-/* Error catching alternatives */\r
- | "\*" <<warn("don't you want a ')' with that '*'?"); CannotContinue=TRUE;>>\r
- | "\+" <<warn("don't you want a ')' with that '+'?"); CannotContinue=TRUE;>>\r
- | "\>" <<warn("'>' can only appear after a nonterminal"); CannotContinue=TRUE;>>\r
- | PassAction <<warn("[...] out of context 'rule > [...]'");\r
- CannotContinue=TRUE;>>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule default_exception_handler */\r
-\r
-default_exception_handler\r
- : exception_group > [DefaultExGroup]\r
- ;\r
-\r
-/* rule exception_group */\r
-\r
-exception_group > [ExceptionGroup *eg]\r
- : <<ExceptionHandler *h; LabelEntry *label=NULL; /* MR6 */\r
- FoundException = 1; FoundExceptionGroup = 1;>> /* MR6 */\r
-\r
- "exception" <<$eg = (ExceptionGroup *)calloc(1, sizeof(ExceptionGroup));>>\r
- { <<char *p;>>\r
- PassAction /* did they attach a label? */\r
- <<\r
- p = LATEXT(1)+1;\r
- p[strlen(p)-1] = '\0'; /* kill trailing space */\r
- label = (LabelEntry *) hash_get(Elabel, LATEXT(1)+1);\r
- if ( label==NULL )\r
- {\r
- err(eMsg1("unknown label in exception handler: '%s'", LATEXT(1)+1));\r
- }\r
- >>\r
- }\r
- ( exception_handler > [h]\r
- <<list_add(&($eg->handlers), (void *)h);>>\r
- )*\r
- { "default" ":" Action\r
- <<{\r
- ExceptionHandler *eh = (ExceptionHandler *)\r
- calloc(1, sizeof(ExceptionHandler));\r
- char *a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require(eh!=NULL, "exception: cannot allocate handler");\r
- require(a!=NULL, "exception: cannot allocate action");\r
- strcpy(a, LATEXT(1));\r
- eh->action = a;\r
- eh->signalname = (char *) calloc(strlen("default")+1, sizeof(char));\r
- require(eh->signalname!=NULL, "exception: cannot allocate sig name");\r
- strcpy(eh->signalname, "default");\r
- list_add(&($eg->handlers), (void *)eh);\r
- }>>\r
- }\r
-\r
- <<\r
- if ( label!=NULL ) {\r
- /* Record ex group in sym tab for this label */\r
- if ( label->ex_group!=NULL ) {\r
- err(eMsg1("duplicate exception handler for label '%s'",label->str));\r
- } else {\r
- label->ex_group = $eg;\r
- /* Label the exception group itself */\r
- $eg->label = label->str;\r
- /* Make the labelled element pt to the exception also */\r
-/* MR6 */ if (label->elem == NULL) {\r
-/* MR6 */ err(eMsg1("reference in exception handler to undefined label '%s'",label->str));\r
-/* MR6 */ } else {\r
- switch ( label->elem->ntype ) {\r
- case nRuleRef :\r
- {\r
- RuleRefNode *r = (RuleRefNode *)label->elem;\r
- r->ex_group = $eg;\r
- break;\r
- }\r
- case nToken :\r
- {\r
- TokNode *t = (TokNode *)label->elem;\r
- t->ex_group = $eg;\r
- break;\r
- }\r
- } /* end switch */\r
-/* MR6 */ }; /* end test on label->elem */\r
- } /* end test on label->ex_group */\r
-\r
- } /* end test on exception label */\r
-\r
-/* MR7 */\r
-/* MR7 */ if (BlkLevel == 1 && label == NULL) {\r
-/* MR7 */ $eg->forRule=1;\r
-/* MR7 */ } else if (label == NULL) {\r
-/* MR7 */ $eg->altID = makeAltID(CurBlockID_array[BlkLevel], CurAltNum_array[BlkLevel]);\r
-/* MR7 */ egAdd($eg);\r
-/* MR7 */ } else {\r
-/* MR7 */ $eg->labelEntry=label;\r
-/* MR7 */ };\r
-/* MR7 */\r
-/* MR7 */ /* You may want to remove this exc from the rule list */\r
-/* MR7 */ /* and handle at the labeled element site. */\r
-/* MR7 */\r
-/* MR7 */ if (label != NULL) {\r
-/* MR7 */ $eg = NULL;\r
-/* MR7 */ };\r
-\r
- >>\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-/* rule exception_handler */\r
-\r
-exception_handler > [ExceptionHandler *eh]\r
- : <<;>> /* MR9 Removed unreferenced variable "a" */\r
- "catch"\r
- <<\r
- $eh = (ExceptionHandler *)calloc(1, sizeof(ExceptionHandler));\r
- require($eh!=NULL, "exception: cannot allocate handler");\r
- >>\r
- ( NonTerminal\r
- <<\r
- $eh->signalname = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require($eh->signalname!=NULL, "exception: cannot allocate sig name");\r
- strcpy($eh->signalname, LATEXT(1));\r
- >>\r
- | TokenTerm\r
- <<\r
- $eh->signalname = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require($eh->signalname!=NULL, "exception: cannot allocate sig name");\r
- strcpy($eh->signalname, LATEXT(1));\r
- >>\r
- )\r
- ":"\r
- { <<$eh->action = NULL;>>\r
- Action\r
- <<\r
- $eh->action = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));\r
- require($eh->action!=NULL, "exception: cannot allocate action");\r
- strcpy($eh->action, LATEXT(1));\r
- >>\r
- }\r
- ;\r
- <<CannotContinue=TRUE;>>\r
-\r
-#token NonTerminal "[a-z] [A-Za-z0-9_]*"\r
- <<\r
- while ( zzchar==' ' || zzchar=='\t' ) {\r
- zzadvance();\r
- }\r
- if ( zzchar == ':' && inAlt ) NLA = LABEL;\r
- >>\r
-#token TokenTerm "[A-Z] [A-Za-z0-9_]*"\r
- <<\r
- while ( zzchar==' ' || zzchar=='\t' ) {\r
- zzadvance();\r
- }\r
- if ( zzchar == ':' && inAlt ) NLA = LABEL;\r
- >>\r
-#token "{\\}#[A-Za-z0-9_]*" <<warn(eMsg1("unknown meta-op: %s",LATEXT(1))); zzskip(); >>\r
-\r
-#lexclass PARSE_ENUM_FILE\r
-\r
-#token "[\t\ ]+" << zzskip(); >> /* Ignore White */\r
-#token "\n|\r|\r\n" << zzline++; zzskip(); >> /* Track Line # */\r
-#token "//" << zzmode(TOK_DEF_CPP_COMMENTS); zzmore(); >>\r
-#token "/\*" << zzmode(TOK_DEF_COMMENTS); zzskip(); >>\r
-#token "#ifdef" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>\r
-#token "#if" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>\r
-#token "#ifndef" << ; >>\r
-#token "#else" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>\r
-#token "#endif" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>\r
-#token "#undef" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>\r
-#token "#import" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>\r
-#token "@" << ; >>\r
-\r
-/* rule enum_file */\r
-\r
-enum_file[char *fname]\r
- : { "#ifndef" ID\r
- { "#define" ID /* ignore if it smells like a gate */\r
- /* First #define after the first #ifndef (if any) is ignored */\r
- }\r
- }\r
- ( ( enum_def[$fname] )+\r
- | defines[$fname]\r
- )\r
- |\r
- ;\r
-\r
-/* rule defines */\r
-\r
-defines[char *fname]\r
- : <<int v; int maxt=(-1); char *t;>> /* MR3 */\r
- (\r
- "#define" ID\r
- <<t = mystrdup(LATEXT(1));>>\r
- INT\r
- <<\r
- v = atoi(LATEXT(1));\r
-/* fprintf(stderr, "#token %s=%d\n", t, v);*/\r
-\r
- /* MR2 Andreas Magnusson (Andreas.Magnusson@mailbox.swipnet.se) */\r
- /* MR2 Fix to bug introduced by 1.33MR1 for #tokdefs */\r
- /* MR2 Don't let #tokdefs be confused by */\r
- /* MR2 DLGminToken and DLGmaxToken */\r
-\r
- if ( ! isDLGmaxToken(t)) { /* MR2 */\r
- TokenNum = v;\r
- if ( v>maxt ) maxt=v;\r
- if ( Tnum( t ) == 0 ) {\r
- addForcedTname( t, v );\r
- } else {\r
- warnFL(eMsg1("redefinition of token %s; ignored",t),$fname,zzline);\r
- };\r
- };\r
- >>\r
- )+\r
- <<TokenNum = maxt + 1;>>\r
- ;\r
-\r
-/* rule enum_def */\r
-\r
-enum_def[char *fname]\r
- : <<int v= 0; int maxt=(-1); char *t;>> /* MR3 */\r
- "enum" ID\r
- "\{"\r
- ID\r
- <<t = mystrdup(LATEXT(1));>>\r
- ( "=" INT <<v=atoi(LATEXT(1));>>\r
- | <<v++;>>\r
- )\r
- <<\r
-/* fprintf(stderr, "#token %s=%d\n", t, v);*/\r
- TokenNum = v;\r
- if ( v>maxt ) maxt=v; /* MR3 */\r
- if ( Tnum( t ) == 0 ) addForcedTname( t, v );\r
- else {\r
- warnFL(eMsg1("redefinition of token %s; ignored",t),$fname,zzline);\r
- }\r
- >>\r
- ( ","\r
-\r
- /* MR2 Andreas Magnusson (Andreas.Magnusson@mailbox.swipnet.se) */\r
- /* MR2 Fix to bug introduced by 1.33MR1 for #tokdefs */\r
- /* MR2 Don't let #tokdefs be confused by */\r
- /* MR2 DLGminToken and DLGmaxToken */\r
-\r
- {\r
- <<isDLGmaxToken(LATEXT(1))>>? ID { "=" INT } /* MR2 */\r
- | ID /* MR2 */\r
- <<t = mystrdup(LATEXT(1));>>\r
- ( "=" INT <<v=atoi(LATEXT(1));>>\r
- | <<v++;>>\r
- )\r
- <<\r
-/* fprintf(stderr, "#token %s=%d\n", t, v);*/\r
- TokenNum = v;\r
- if ( v>maxt ) maxt=v; /* MR3 */\r
- if ( Tnum( t ) == 0 ) addForcedTname( t, v );\r
- else {\r
- warnFL(eMsg1("redefinition of token %s; ignored",t),$fname,zzline);\r
- }\r
- >>\r
- }\r
- )*\r
- "\}"\r
- ";"\r
- <<TokenNum = maxt + 1;>> /* MR3 */\r
- ;\r
-\r
-#token INT "[0-9]+"\r
-#token ID "[a-zA-Z_][_a-zA-Z0-9]*"\r
-\r
-#lexclass START\r
-\r
-/* MR14 Arpad Beszedes 26-May-98\r
- Add support for #line directives when antlr source is pre-processed\r
-*/\r
-\r
-#lexaction\r
-<<\r
-\r
-static char *\r
-#ifdef __USE_PROTOS\r
-getFileNameFromTheLineInfo(char *toStr, char *fromStr)\r
-#else\r
-getFileNameFromTheLineInfo(toStr, fromStr)\r
-char *toStr, *fromStr;\r
-#endif\r
-{\r
- int i, j, k;\r
-\r
- if (!fromStr || !toStr) return toStr;\r
-\r
- /* find the first " */\r
-\r
- for (i=0;\r
- (i<MaxFileName) &&\r
- (fromStr[i] != '\n') &&\r
- (fromStr[i] != '\r') &&\r
- (fromStr[i] != '\"');\r
- i++) /* nothing */ ;\r
-\r
- if ( (i == MaxFileName) ||\r
- (fromStr[i] == '\n') ||\r
- (fromStr[i] == '\r') ) {\r
- return toStr;\r
- }\r
-\r
- /* find the second " */\r
-\r
- for (j=i+1;\r
- (j<MaxFileName) &&\r
- (fromStr[j] != '\n') &&\r
- (fromStr[j] != '\r') &&\r
- (fromStr[j] != '\"');\r
- j++) /* nothing */ ;\r
-\r
- if ((j == MaxFileName) ||\r
- (fromStr[j] == '\n') ||\r
- (fromStr[j] == '\r') ) {\r
- return toStr;\r
- }\r
-\r
- /* go back until the last / or \ */\r
-\r
- for (k=j-1;\r
- (fromStr[k] != '\"') &&\r
- (fromStr[k] != '/') &&\r
- (fromStr[k] != '\\');\r
- k--) /* nothing */ ;\r
-\r
- /* copy the string after " / or \ into toStr */\r
-\r
- for (i=k+1; fromStr[i] != '\"'; i++) {\r
- toStr[i-k-1] = fromStr[i];\r
- }\r
-\r
- toStr[i-k-1] = '\0';\r
-\r
- return toStr;\r
-}\r
-\r
-/* MR14 end of a block to support #line in antlr source code */\r
-\r
->>\r
-\r
-<<\r
-\r
-/* MR2 Andreas Magnusson (Andreas.Magnusson@mailbox.swipnet.se) */\r
-/* MR2 Fix to bug introduced by 1.33MR1 for #tokdefs */\r
-/* MR2 Don't let #tokdefs be confused by */\r
-/* MR2 DLGminToken and DLGmaxToken */\r
-\r
-/* semantic check on DLGminToken and DLGmaxmaxToken in #tokdefs */\r
-\r
-#ifdef __USE_PROTOS\r
-static int isDLGmaxToken(char *Token)\r
-#else\r
-static int isDLGmaxToken(Token)\r
- char * Token;\r
-#endif\r
-{\r
- static char checkStr1[] = "DLGmaxToken";\r
- static char checkStr2[] = "DLGminToken";\r
-\r
- if (strcmp(Token, checkStr1) == 0)\r
- return 1;\r
- else if (strcmp(Token, checkStr2) == 0)\r
- return 1;\r
- else\r
- return 0;\r
-}\r
-\r
-/* semantics of #token */\r
-static void\r
-#ifdef __USE_PROTOS\r
-chkToken(char *t, char *e, char *a, int tnum)\r
-#else\r
-chkToken(t,e,a,tnum)\r
-char *t, *e, *a;\r
-int tnum;\r
-#endif\r
-{\r
- TermEntry *p;\r
-\r
- /* check to see that they don't try to redefine a token as a token class */\r
- if ( t!=NULL ) {\r
- p = (TermEntry *) hash_get(Tname, t);\r
- if ( p!=NULL && p->classname ) {\r
- err(eMsg1("redefinition of #tokclass '%s' to #token not allowed; ignored",t));\r
- if ( a!=NULL ) free((char *)a);\r
- return;\r
- }\r
- }\r
-\r
- if ( t==NULL && e==NULL ) { /* none found */\r
- err("#token requires at least token name or rexpr");\r
- }\r
- else if ( t!=NULL && e!=NULL ) { /* both found */\r
- if ( UserDefdTokens ) { /* if #tokdefs, must not define new */\r
- p = (TermEntry *) hash_get(Tname, t);\r
- if ( p == NULL) {\r
-err(eMsg1("new token definition '%s' not allowed - only #token with name already defined by #tokdefs file allowed",t));\r
- return;\r
- };\r
- }\r
- Tklink(t, e);\r
- if ( a!=NULL ) {\r
- if ( hasAction(e) ) {\r
- err(eMsg1("redefinition of action for %s; ignored",e));\r
- }\r
- else setHasAction(e, a);\r
- }\r
- }\r
- else if ( t!=NULL ) { /* only one found */\r
- if ( UserDefdTokens ) {\r
- p = (TermEntry *) hash_get(Tname, t);\r
- if (p == NULL) {\r
-err(eMsg1("new token definition '%s' not allowed - only #token with name already defined by #tokdefs file allowed",t));\r
- };\r
- return;\r
- }\r
- if ( Tnum( t ) == 0 ) addTname( t );\r
- else {\r
- err(eMsg1("redefinition of token %s; ignored",t));\r
- }\r
- if ( a!=NULL ) {\r
- err(eMsg1("action cannot be attached to a token name (%s); ignored",t));\r
- free((char *)a);\r
- }\r
- }\r
- else if ( e!=NULL ) {\r
- if ( Tnum( e ) == 0 ) addTexpr( e );\r
- else {\r
- if ( hasAction(e) ) {\r
- err(eMsg1("redefinition of action for expr %s; ignored",e));\r
- }\r
- else if ( a==NULL ) {\r
- err(eMsg1("redefinition of expr %s; ignored",e));\r
- }\r
- }\r
- if ( a!=NULL ) setHasAction(e, a);\r
- }\r
-\r
- /* if a token type number was specified, then add the token ID and 'tnum'\r
- * pair to the ForcedTokens list. (only applies if an id was given)\r
- */\r
- if ( t!=NULL && tnum>0 )\r
- {\r
- if ( set_el(tnum, reserved_positions) )\r
- {\r
- err(eMsgd("a token has already been forced to token number %d; ignored", tnum));\r
- }\r
- else\r
- {\r
- list_add(&ForcedTokens, newForcedToken(t,tnum));\r
- set_orel(tnum, &reserved_positions);\r
- }\r
- }\r
-}\r
->>\r
-\r
-<<\r
-static int\r
-#ifdef __USE_PROTOS\r
-match_token(char *s, char **nxt)\r
-#else\r
-match_token(s,nxt)\r
-char *s;\r
-char **nxt;\r
-#endif\r
-{\r
- if ( !(*s>='A' && *s<='Z') ) return 0;\r
- s++;\r
- while ( (*s>='a' && *s<='z') ||\r
- (*s>='A' && *s<='Z') ||\r
- (*s>='0' && *s<='9') ||\r
- *s=='_' )\r
- {\r
- s++;\r
- }\r
- if ( *s!=' ' && *s!='}' ) return 0;\r
- *nxt = s;\r
- return 1;\r
-}\r
-\r
-static int\r
-#ifdef __USE_PROTOS\r
-match_rexpr(char *s, char **nxt)\r
-#else\r
-match_rexpr(s,nxt)\r
-char *s;\r
-char **nxt;\r
-#endif\r
-{\r
- if ( *s!='"' ) return 0;\r
- s++;\r
- while ( *s!='"' )\r
- {\r
- if ( *s=='\n' || *s=='\r' ) /* MR13 */\r
- warn("eoln found in regular expression");\r
- if ( *s=='\\' ) s++;\r
- s++;\r
- }\r
- *nxt = s+1;\r
- return 1;\r
-}\r
-\r
-/*\r
- * Walk a string "{ A .. Z }" where A..Z is a space separated list\r
- * of token references (either labels or reg exprs). Return a\r
- * string "inlineX_set" for some unique integer X. Basically,\r
- * we pretend as if we had seen "#tokclass inlineX { A .. Z }"\r
- * on the input stream outside of an action.\r
- */\r
-char *\r
-#ifdef __USE_PROTOS\r
-inline_set(char *s)\r
-#else\r
-inline_set(s)\r
-char *s;\r
-#endif\r
-{\r
- char *nxt;\r
- fprintf(stderr, "found consumeUntil( {...} )\n");\r
- while ( *s==' ' || *s=='\t' || *s=='\n' || *s=='\r' ) {s++;}\r
- if ( *s!='{' )\r
- {\r
- err("malformed consumeUntil( {...} ); missing '{'");\r
- return "bad_set";\r
- }\r
- s++;\r
- while ( *s==' ' || *s=='\t' || *s=='\n' || *s=='\r' ) {s++;}\r
- while ( *s!='}' )\r
- {\r
- if ( match_token(s,&nxt) ) fprintf(stderr, "found token %s\n", s);\r
- else if ( match_rexpr(s,&nxt) ) fprintf(stderr, "found rexpr %s\n", s);\r
- else {\r
- err("invalid element in consumeUntil( {...} )");\r
- return "bad_set";\r
- }\r
- s = nxt;\r
- while ( *s==' ' || *s=='\t' || *s=='\n' || *s=='\r' ) {s++;}\r
- }\r
- return "inlineX_set";\r
-}\r
->>\r
-\r
-<<\r
-/* ANTLR-specific syntax error message generator\r
- * (define USER_ZZSYN when compiling so don't get 2 definitions)\r
- */\r
-void\r
-#ifdef __USE_PROTOS\r
-zzsyn(char *text, int tok, char *egroup, SetWordType *eset, int etok,\r
-int k, char *bad_text)\r
-#else\r
-zzsyn(text, tok, egroup, eset, etok, k, bad_text)\r
-char *text, *egroup, *bad_text;\r
-int tok;\r
-int etok;\r
-int k;\r
-SetWordType *eset;\r
-#endif\r
-{\r
- fprintf(stderr, ErrHdr, FileStr[CurFile]!=NULL?FileStr[CurFile]:"stdin", zzline);\r
- fprintf(stderr, " syntax error at \"%s\"", (tok==zzEOF_TOKEN)?"EOF":text);\r
- if ( !etok && !eset ) {fprintf(stderr, "\n"); return;}\r
- if ( k==1 ) fprintf(stderr, " missing");\r
- else\r
- {\r
- fprintf(stderr, "; \"%s\" not", bad_text);\r
- if ( zzset_deg(eset)>1 ) fprintf(stderr, " in");\r
- }\r
- if ( zzset_deg(eset)>0 ) zzedecode(eset);\r
- else fprintf(stderr, " %s", zztokens[etok]);\r
- if ( strlen(egroup) > (size_t)0 ) fprintf(stderr, " in %s", egroup);\r
- fprintf(stderr, "\n");\r
-}\r
->>\r
-\r
-#lexaction <<\r
-#ifdef __USE_PROTOS\r
-void mark_label_used_in_sem_pred(LabelEntry *le) /* MR10 */\r
-#else\r
-void mark_label_used_in_sem_pred(le) /* MR10 */\r
- LabelEntry *le;\r
-#endif\r
-{\r
- TokNode *tn;\r
- require (le->elem->ntype == nToken,"mark_label_used... ntype != nToken");\r
- tn=(TokNode *)le->elem;\r
- require (tn->label != 0,"mark_label_used... TokNode has no label");\r
- tn->label_used_in_semantic_pred=1;\r
-}\r
->>\r
projects / mirror_edk2.git / blobdiff