summaryrefslogtreecommitdiff
path: root/BaseTools/Source/C/VfrCompile/Pccts/antlr/antlr.g
diff options
context:
space:
mode:
Diffstat (limited to 'BaseTools/Source/C/VfrCompile/Pccts/antlr/antlr.g')
-rw-r--r--BaseTools/Source/C/VfrCompile/Pccts/antlr/antlr.g2586
1 files changed, 0 insertions, 2586 deletions
diff --git a/BaseTools/Source/C/VfrCompile/Pccts/antlr/antlr.g b/BaseTools/Source/C/VfrCompile/Pccts/antlr/antlr.g
deleted file mode 100644
index e6eda6010c..0000000000
--- a/BaseTools/Source/C/VfrCompile/Pccts/antlr/antlr.g
+++ /dev/null
@@ -1,2586 +0,0 @@
-/*
- * antlr.g -- PCCTS Version 1.xx ANTLR
- *
- * Parse an antlr input grammar and build a syntax-diagram.
- *
- * Written in itself (needs at least 1.06 to work)
- *
- * 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.
- *
- * ANTLR 1.33
- * Terence Parr
- * Parr Research Corporation
- * with Purdue University and AHPCRC, University of Minnesota
- * 1989-1995
- */
-
-/* MR1 */
-/* MR1 10-Apr-97 MR1 Replace #if logic with #include "pcctscfg.h" */
-/* MR1 */
-
-#header <<
- #include "pcctscfg.h"
- #include "set.h"
- #include <ctype.h>
- #include "syn.h"
- #include "hash.h"
- #include "generic.h"
- #define zzcr_attr(attr,tok,t)
- >>
-
-<<
-
-/* MR20 G. Hobbelt For Borland C++ 4.x & 5.x compiling with ALL warnings enabled */
-#if defined(__TURBOC__)
-#pragma warn -aus /* unused assignment of 'xxx' */
-#endif
-
-
-#ifdef __USE_PROTOS
-static void chkToken(char *, char *, char *, int);
-#else
-static void chkToken();
-#endif
-
-#ifdef __USE_PROTOS
-static int isDLGmaxToken(char *Token); /* MR3 */
-#else
-static int isDLGmaxToken(); /* MR3 */
-#endif
-
-static int class_nest_level = 0;
-
-/* MR20 G. Hobbelt extern definitions moved to antlr.h */
-
->>
-
-#lexaction <<
-/* maintained, but not used for now */
-set AST_nodes_refd_in_actions = set_init;
-int inAlt = 0;
-set attribsRefdFromAction = set_init; /* MR20 */
-int UsedOldStyleAttrib = 0;
-int UsedNewStyleLabel = 0;
-#ifdef __USE_PROTOS
-char *inline_set(char *);
-#else
-char *inline_set();
-#endif
-
-/* MR1 10-Apr-97 MR1 Previously unable to put right shift operator */
-/* MR1 in DLG action */
-
-int tokenActionActive=0; /* MR1 */
-
->>
-
-#lexclass STRINGS
-#token QuotedTerm "\"" << zzmode(START); >>
-#token "\n|\r|\r\n" <<
- zzline++;
- warn("eoln found in string");
- zzskip();
- >>
-#token "\\(\n|\r|\r\n)" << zzline++; zzmore(); >>
-#token "\\~[]" << zzmore(); >>
-#token "~[\n\r\"\\]+" << zzmore(); >>
-
-#lexclass ACTION_STRINGS
-#token "\"" << zzmode(ACTIONS); zzmore(); >>
-#token "\n|\r|\r\n" <<
- zzline++;
- warn("eoln found in string (in user action)");
- zzskip();
- >>
-#token "\\(\n|\r|\r\n)" << zzline++; zzmore(); >>
-#token "\\~[]" << zzmore(); >>
-#token "~[\n\r\"\\]+" << zzmore(); >>
-
-#lexclass ACTION_CHARS
-#token "'" << zzmode(ACTIONS); zzmore(); >>
-#token "\n|\r|\r\n" <<
- zzline++;
- warn("eoln found in char literal (in user action)");
- zzskip();
- >>
-#token "\\~[]" << zzmore(); >>
-#token "~[\n\r'\\]+" << zzmore(); >>
-
-#lexclass ACTION_COMMENTS
-#token "\*/" << zzmode(ACTIONS); zzmore(); >>
-#token "\*" << zzmore(); >>
-#token "\n|\r|\r\n" << zzline++; zzmore(); DAWDLE; >>
-#token "~[\n\r\*]+" << zzmore(); >>
-
-#lexclass TOK_DEF_COMMENTS
-#token "\*/" << zzmode(PARSE_ENUM_FILE);
- zzmore(); >>
-#token "\*" << zzmore(); >>
-#token "\n|\r|\r\n" << zzline++; zzmore(); DAWDLE; >>
-#token "~[\n\r\*]+" << zzmore(); >>
-
-#lexclass TOK_DEF_CPP_COMMENTS
-#token "\n|\r|\r\n" << zzline++; zzmode(PARSE_ENUM_FILE); zzskip(); DAWDLE; >>
-#token "~[\n\r]+" << zzskip(); >>
-
-#lexclass ACTION_CPP_COMMENTS
-#token "\n|\r|\r\n" << zzline++; zzmode(ACTIONS); zzmore(); DAWDLE; >>
-#token "~[\n\r]+" << zzmore(); >>
-
-#lexclass CPP_COMMENTS
-#token "\n|\r|\r\n" << zzline++; zzmode(START); zzskip(); DAWDLE; >>
-#token "~[\n\r]+" << zzskip(); >>
-
-#lexclass COMMENTS
-#token "\*/" << zzmode(START); zzskip(); >>
-#token "\*" << zzskip(); >>
-#token "\n|\r|\r\n" << zzline++; zzskip(); DAWDLE; >>
-#token "~[\n\r\*]+" << zzskip(); >>
-
-/*
- * This lexical class accepts actions of type [..] and <<..>>
- *
- * It translates the following special items for C:
- *
- * $j --> "zzaArg(current zztasp, j)"
- * $i.j --> "zzaArg(zztaspi, j)"
- * $i.nondigit> "zzaArg(current zztasp, i).nondigit"
- * $$ --> "zzaRet"
- * $alnum --> "alnum" (used to ref parameters)
- * $rule --> "zzaRet"
- * $retval --> "_retv.retval" if > 1 return values else "_retv"
- * $[token, text] --> "zzconstr_attr(token, text)"
- * $[] --> "zzempty_attr()"
- *
- * It translates the following special items for C++:
- * (attributes are now stored with 'Token' and $i's are only
- * pointers to the Tokens. Rules don't have attributes now.)
- *
- * $j --> "_tbj" where b is the block level
- * $i.j --> "_tij"
- * $j->nondigit> "_tbj->nondigit"
- * $$ --> "$$"
- * $alnum --> "alnum" (used to ref parameters)
- * $rule --> "$rule"
- * $retval --> "_retv.retval" if > 1 return values else "_retv"
- * $[token, text] --> invalid
- * $[] --> invalid
- *
- * And, for trees:
- *
- * #0 --> "(*_root)"
- * #i --> "zzastArg(i)"
- * #[args] --> "zzmk_ast(zzastnew(), args)"
- * #[] --> "zzastnew()"
- * #( root, child1, ..., childn )
- * --> "zztmake(root, child1, ...., childn, NULL)"
- * #() --> "NULL"
- *
- * For C++, ...
- *
- * #0 --> "(*_root)"
- * #i --> "_astbi" where b is the block level
- * #alnum --> "alnum_ast" (used to ref #label)
- * #[args] --> "new AST(args)"
- * #[] --> "new AST"
- * #( root, child1, ..., childn )
- * --> "AST::tmake(root, child1, ...., childn, NULL)"
- * #() --> "NULL"
- *
- * To escape,
- *
- * \] --> ]
- * \) --> )
- * \$ --> $
- * \# --> #
- *
- * A stack is used to nest action terminators because they can be nested
- * like crazy: << #[$[..],..] >>
- */
-#lexclass ACTIONS
-#token Action "\>\>" << /* these do not nest */
- zzmode(START);
- NLATEXT[0] = ' ';
- NLATEXT[1] = ' ';
- zzbegexpr[0] = ' ';
- zzbegexpr[1] = ' ';
- if ( zzbufovf ) {
- err( eMsgd("action buffer overflow; size %d",ZZLEXBUFSIZE));
- }
-
-/* MR1 10-Apr-97 MR1 Previously unable to put right shift operator */
-/* MR1 in DLG action */
-/* MR1 Doesn't matter what kind of action it is - reset*/
-
- tokenActionActive=0; /* MR1 */
- >>
-#token Pred "\>\>?" << /* these do not nest */
- zzmode(START);
- NLATEXT[0] = ' ';
- NLATEXT[1] = ' ';
- zzbegexpr[0] = '\0';
- if ( zzbufovf ) {
- err( eMsgd("predicate buffer overflow; size %d",ZZLEXBUFSIZE));
- };
-#ifdef __cplusplus__
-/* MR10 */ list_apply(CurActionLabels, (void (*)(void *))mark_label_used_in_sem_pred);
-#else
-#ifdef __STDC__
-/* MR10 */ list_apply(CurActionLabels, (void (*)(void *))mark_label_used_in_sem_pred);
-#else
-#ifdef __USE_PROTOS
-/* MRxx */ list_apply(CurActionLabels, (void (*)(void *))mark_label_used_in_sem_pred);
-#else
-/* MR10 */ list_apply(CurActionLabels,mark_label_used_in_sem_pred);
-#endif
-#endif
-#endif
- >>
-#token PassAction "\]" << if ( topint() == ']' ) {
- popint();
- if ( istackempty() ) /* terminate action */
- {
- zzmode(START);
- NLATEXT[0] = ' ';
- zzbegexpr[0] = ' ';
- if ( zzbufovf ) {
- err( eMsgd("parameter buffer overflow; size %d",ZZLEXBUFSIZE));
- }
- }
- else {
- /* terminate $[..] and #[..] */
- if ( GenCC ) zzreplstr("))");
- else zzreplstr(")");
- zzmore();
- }
- }
- else if ( topint() == '|' ) { /* end of simple [...] */
- popint();
- zzmore();
- }
- else zzmore();
- >>
-#token "consumeUntil\( [\ \t]* \{~[\}]+\} [\ \t]* \)"
- <<
- zzmore();
- zzreplstr(inline_set(zzbegexpr+
- strlen("consumeUntil(")));
- >>
-#token "consumeUntil\( ~[\)]+ \)"
- << zzmore(); >>
-#token "\n|\r|\r\n" << zzline++; zzmore(); DAWDLE; >>
-#token "\>" << zzmore(); >>
-#token "$" << zzmore(); >>
-#token "$$" << if ( !GenCC ) {zzreplstr("zzaRet"); zzmore();}
- else err("$$ use invalid in C++ mode"); >>
-
-#token "$\[\]" << if ( !GenCC ) {zzreplstr("zzempty_attr"); zzmore();}
- else err("$[] use invalid in C++ mode"); >>
-#token "$\[" <<
- pushint(']');
- if ( !GenCC ) zzreplstr("zzconstr_attr(");
- else err("$[..] use invalid in C++ mode");
- zzmore();
- >>
-#token "$[0-9]+" <<{
- static char buf[100];
- numericActionLabel=1; /* MR10 */
- if ( strlen(zzbegexpr)>(size_t)85 )
- fatal("$i attrib ref too big");
- set_orel(atoi(zzbegexpr+1), &attribsRefdFromAction);
- if ( !GenCC ) sprintf(buf,"zzaArg(zztasp%d,%s)",
- BlkLevel-1,zzbegexpr+1);
- else sprintf(buf,"_t%d%s",
- BlkLevel-1,zzbegexpr+1);
- zzreplstr(buf);
- zzmore();
- UsedOldStyleAttrib = 1;
- if ( UsedNewStyleLabel )
- err("cannot mix old-style $i with new-style labels");
- }
- >>
-#token "$[0-9]+." <<{
- static char buf[100];
- numericActionLabel=1; /* MR10 */
- if ( strlen(zzbegexpr)>(size_t)85 )
- fatal("$i.field attrib ref too big");
- zzbegexpr[strlen(zzbegexpr)-1] = ' ';
- set_orel(atoi(zzbegexpr+1), &attribsRefdFromAction);
- if ( !GenCC ) sprintf(buf,"zzaArg(zztasp%d,%s).",
- BlkLevel-1,zzbegexpr+1);
- else sprintf(buf,"_t%d%s.",
- BlkLevel-1,zzbegexpr+1);
- zzreplstr(buf);
- zzmore();
- UsedOldStyleAttrib = 1;
- if ( UsedNewStyleLabel )
- err("cannot mix old-style $i with new-style labels");
- }
- >>
-#token "$[0-9]+.[0-9]+" <<{
- static char buf[100];
- static char i[20], j[20];
- char *p,*q;
- numericActionLabel=1; /* MR10 */
- if (strlen(zzbegexpr)>(size_t)85) fatal("$i.j attrib ref too big");
- for (p=zzbegexpr+1,q= &i[0]; *p!='.'; p++) {
- if ( q == &i[20] )
- fatalFL("i of $i.j attrib ref too big",
- FileStr[CurFile], zzline );
- *q++ = *p;
- }
- *q = '\0';
- for (p++, q= &j[0]; *p!='\0'; p++) {
- if ( q == &j[20] )
- fatalFL("j of $i.j attrib ref too big",
- FileStr[CurFile], zzline );
- *q++ = *p;
- }
- *q = '\0';
- if ( !GenCC ) sprintf(buf,"zzaArg(zztasp%s,%s)",i,j);
- else sprintf(buf,"_t%s%s",i,j);
- zzreplstr(buf);
- zzmore();
- UsedOldStyleAttrib = 1;
- if ( UsedNewStyleLabel )
- err("cannot mix old-style $i with new-style labels");
- }
- >>
-#token "$[_a-zA-Z][_a-zA-Z0-9]*"
- <<{ static char buf[300]; LabelEntry *el;
- zzbegexpr[0] = ' ';
- if ( CurRule != NULL &&
- strcmp(CurRule, &zzbegexpr[1])==0 ) {
- if ( !GenCC ) zzreplstr("zzaRet");
- }
- else if ( CurRetDef != NULL &&
- strmember(CurRetDef, &zzbegexpr[1])) {
- if ( hasMultipleOperands( CurRetDef ) ) {
- require (strlen(zzbegexpr)<=(size_t)285,
- "$retval attrib ref too big");
- sprintf(buf,"_retv.%s",&zzbegexpr[1]);
- zzreplstr(buf);
- }
- else zzreplstr("_retv");
- }
- else if ( CurParmDef != NULL &&
- strmember(CurParmDef, &zzbegexpr[1])) {
- ;
- }
- else if ( Elabel==NULL ) {
- { err("$-variables in actions outside of rules are not allowed"); }
- } else if ( (el=(LabelEntry *)hash_get(Elabel, &zzbegexpr[1]))!=NULL ) {
-/* MR10 */
-/* MR10 */ /* element labels might exist without an elem when */
-/* MR10 */ /* it is a forward reference (to a rule) */
-/* MR10 */
-/* MR10 */ if ( GenCC && (el->elem == NULL || el->elem->ntype==nRuleRef) )
-/* MR10 */ { err(eMsg1("There are no token ptrs for rule references: '$%s'",&zzbegexpr[1])); }
-/* MR10 */
-/* MR10 */ if ( !GenCC && (el->elem == NULL || el->elem->ntype==nRuleRef) && GenAST) {
-/* MR10 */ err("You can no longer use attributes returned by rules when also using ASTs");
-/* MR10 */ err(" Use upward inheritance (\"rule >[Attrib a] : ... <<$a=...\>\>\")");
-/* MR10 */ };
-/* MR10 */
-/* MR10 */ /* keep track of <<... $label ...>> for semantic predicates in guess mode */
-/* MR10 */ /* element labels contain pointer to the owners node */
-/* MR10 */
-/* MR10 */ if (el->elem != NULL && el->elem->ntype == nToken) {
-/* MR10 */ list_add(&CurActionLabels,el);
-/* MR10 */ };
- }
- else
- warn(eMsg1("$%s not parameter, return value, (defined) element label",&zzbegexpr[1]));
- }
- zzmore();
- >>
-#token "#0" << zzreplstr("(*_root)"); zzmore(); chkGTFlag(); >>
-#token "#\[\]" << if ( GenCC ) {
- if (NewAST) zzreplstr("(newAST)");
- else zzreplstr("(new AST)");}
- else {zzreplstr("zzastnew()");} zzmore();
- chkGTFlag();
- >>
-#token "#\(\)" << zzreplstr("NULL"); zzmore(); chkGTFlag(); >>
-#token "#[0-9]+" <<{
- static char buf[100];
- if ( strlen(zzbegexpr)>(size_t)85 )
- fatal("#i AST ref too big");
- if ( GenCC ) sprintf(buf,"_ast%d%s",BlkLevel-1,zzbegexpr+1);
- else sprintf(buf,"zzastArg(%s)",zzbegexpr+1);
- zzreplstr(buf);
- zzmore();
- set_orel(atoi(zzbegexpr+1), &AST_nodes_refd_in_actions);
- chkGTFlag();
- }
- >>
-
-/* MR14 Arpad Beszedes 26-May-98
- Add support for #line directives when antlr source is pre-processed
- #lexclass ACTIONS
-*/
-
-#token "#line[\ \t]* [0-9]+ {[\ \t]* \"~[\"]+\" ([\ \t]* [0-9]*)* } (\n|\r|\r\n)"
- <<
- zzline = atoi(zzbegexpr+5) - 1; zzline++; zzmore();
- getFileNameFromTheLineInfo(FileStr[CurFile], zzbegexpr);
- >>
-
-#token "#line ~[\n\r]* (\n|\r|\r\n)"
- <<
- zzline++; zzmore();
- >>
-
-/* MR14 end of a block to support #line in antlr source code */
-
-#token "#[_a-zA-Z][_a-zA-Z0-9]*"
- <<
- if ( !(strcmp(zzbegexpr, "#ifdef")==0 ||
- strcmp(zzbegexpr, "#if")==0 ||
- strcmp(zzbegexpr, "#else")==0 ||
- strcmp(zzbegexpr, "#endif")==0 ||
- strcmp(zzbegexpr, "#ifndef")==0 ||
- strcmp(zzbegexpr, "#define")==0 ||
- strcmp(zzbegexpr, "#pragma")==0 ||
- strcmp(zzbegexpr, "#undef")==0 ||
- strcmp(zzbegexpr, "#import")==0 ||
- strcmp(zzbegexpr, "#line")==0 ||
- strcmp(zzbegexpr, "#include")==0 ||
- strcmp(zzbegexpr, "#error")==0) )
- {
- static char buf[100];
- sprintf(buf, "%s_ast", zzbegexpr+1);
-/* MR27 */ list_add(&CurAstLabelsInActions, mystrdup(zzbegexpr+1));
- zzreplstr(buf);
- chkGTFlag();
- }
- zzmore();
- >>
-#token "#\[" <<
- pushint(']');
- if ( GenCC ) {
- if (NewAST) zzreplstr("(newAST(");
- else zzreplstr("(new AST("); }
- else zzreplstr("zzmk_ast(zzastnew(),");
- zzmore();
- chkGTFlag();
- >>
-#token "#\(" <<
- pushint('}');
- if ( GenCC ) {
- if (tmakeInParser) {
- zzreplstr("tmake(");
- }
- else {
- zzreplstr("ASTBase::tmake(");
- }
- }
- else {
- zzreplstr("zztmake(");
- }
- zzmore();
- chkGTFlag();
- >>
-#token "#" << zzmore(); >>
-#token "\)" <<
- if ( istackempty() )
- zzmore();
- else if ( topint()==')' ) {
- popint();
- }
- else if ( topint()=='}' ) {
- popint();
- /* terminate #(..) */
- zzreplstr(", NULL)");
- }
- zzmore();
- >>
-#token "\[" <<
- pushint('|'); /* look for '|' to terminate simple [...] */
- zzmore();
- >>
-#token "\(" <<
- pushint(')');
- zzmore();
- >>
-
-#token "\\\]" << zzreplstr("]"); zzmore(); >>
-#token "\\\)" << zzreplstr(")"); zzmore(); >>
-
-/* MR1 10-Apr-97 MR1 Previously unable to put right shift operator */
-/* MR1 in DLG action */
-
-#token "\\>" << if (! tokenActionActive) zzreplstr(">"); /* MR1 */
- zzmore(); /* MR1 */
- >> /* MR1 */
-
-
-#token "'" << zzmode(ACTION_CHARS); zzmore();>>
-#token "\"" << zzmode(ACTION_STRINGS); zzmore();>>
-#token "\\$" << zzreplstr("$"); zzmore(); >>
-#token "\\#" << zzreplstr("#"); zzmore(); >>
-#token "\\(\n|\r|\r\n)" << zzline++; zzmore(); >>
-#token "\\~[\]\)>$#]" << zzmore(); >> /* escaped char, always ignore */
-#token "/" << zzmore(); >>
-#token "/\*" << zzmode(ACTION_COMMENTS); zzmore(); >>
-#token "\*/" << warn("Missing /*; found dangling */ in action"); zzmore(); >>
-#token "//" << zzmode(ACTION_CPP_COMMENTS); zzmore(); >>
-#token "~[\n\r\)\(\\$#\>\]\[\"'/]+" << zzmore(); >>
-
-#lexclass START
-#token "[\t\ ]+" << zzskip(); >> /* Ignore White */
-#token "\n|\r|\r\n" << zzline++; zzskip(); >> /* Track Line # */
-#token "\[" << zzmode(ACTIONS); zzmore();
- istackreset();
- pushint(']'); >>
-#token "\<\<" << action_file=CurFile; action_line=zzline;
- zzmode(ACTIONS); zzmore();
- list_free(&CurActionLabels,0); /* MR10 */
- numericActionLabel=0; /* MR10 */
- istackreset();
- pushint('>'); >>
-#token "\"" << zzmode(STRINGS); zzmore(); >>
-#token "/\*" << zzmode(COMMENTS); zzskip(); >>
-#token "\*/" << warn("Missing /*; found dangling */"); zzskip(); >>
-#token "//" << zzmode(CPP_COMMENTS); zzskip(); >>
-
-/* MR14 Arpad Beszedes 26-May-98
- Add support for #line directives when antlr source is pre-processed
- #lexclass START
-*/
-
-#token "#line[\ \t]* [0-9]+ {[\ \t]* \"~[\"]+\" ([\ \t]* [0-9]*)* } (\n|\r|\r\n)"
- <<
- zzline = atoi(zzbegexpr+5) - 1; zzline++; zzmore();
- getFileNameFromTheLineInfo(FileStr[CurFile], zzbegexpr);
- >>
-
-#token "#line ~[\n\r]* (\n|\r|\r\n)"
- <<
- zzline++; zzmore();
- >>
-
-/* MR14 end of a block to support #line in antlr source code */
-
-/* */
-/* 8-Apr-97 Regularize escape sequence for ">>" */
-/* appearing in string literals */
-/* */
-
-#token "\>\>" << warn("Missing <<; found dangling \>\>"); zzskip(); >> /* MR1 */
-#token WildCard "."
-#token "\@" <<FoundException = 1; /* MR6 */
- FoundAtOperator = 1;>> /* MR6 */
-#token Eof "@"
- << /* L o o k F o r A n o t h e r F i l e */
- {
- FILE *new_input;
- new_input = NextFile();
- if ( new_input == NULL ) { NLA=Eof; return; }
- fclose( input );
- input = new_input;
- zzrdstream( input );
- zzskip(); /* Skip the Eof (@) char i.e continue */
- }
- >>
-
-#token LABEL
-
-#errclass "grammar-element" { element }
-#errclass "meta-symbol" { "\}" "!" ";" "\|" "\~" "^" "\)" }
-
-#token Pragma "{\\}#pragma" /* MR21 */
-#token FirstSetSymbol "{\\}#FirstSetSymbol" /* MR21 */
-/*
- * Get a grammar -- Build a list of rules like:
- *
- * o-->Rule1--o
- * |
- * o-->Rule2--o
- * |
- * ...
- * |
- * o-->RuleN--o
- */
-
-/* rule grammar */
-
-grammar : <<Graph g;>>
- ( "{\\}#header" Action /* MR13 */
- <<
- if ( HdrAction==NULL ) {
- HdrAction = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(HdrAction!=NULL, "rule grammar: cannot allocate header action");
- strcpy(HdrAction, LATEXT(1));
- }
- else warn("additional #header statement ignored");
- >>
- | "{\\}#first" Action
- <<
- if ( FirstAction==NULL ) {
- FirstAction = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(FirstAction!=NULL, "rule grammar: cannot allocate #first action");
- strcpy(FirstAction, LATEXT(1));
- } else {
- warn("additional #first statement ignored");
- };
- >>
-
- | "{\\}#parser" QuotedTerm
- <<
- if ( GenCC ) {
- warn("#parser meta-op incompatible with -CC; ignored");
- }
- else {
- if ( strcmp(ParserName,"zzparser")==0 ) {
- ParserName=StripQuotes(mystrdup(LATEXT(1)));
- if ( RulePrefix[0]!='\0' )
- {
- warn("#parser meta-op incompatible with '-gp prefix'; '-gp' ignored");
- RulePrefix[0]='\0';
- }
- }
- else warn("additional #parser statement ignored");
- }
- >>
- | "{\\}#tokdefs" QuotedTerm
- <<{
- char *fname;
- zzantlr_state st; FILE *f; struct zzdlg_state dst;
- UserTokenDefsFile = mystrdup(LATEXT(1));
- zzsave_antlr_state(&st);
- zzsave_dlg_state(&dst);
- fname = mystrdup(LATEXT(1));
- f = fopen(StripQuotes(fname), "r");
- if ( f==NULL ) {warn(eMsg1("cannot open token defs file '%s'", fname+1));}
- else {
- ANTLRm(enum_file(fname+1), f, PARSE_ENUM_FILE);
- UserDefdTokens = 1;
- }
- zzrestore_antlr_state(&st);
- zzrestore_dlg_state(&dst);
- }>>
- )*
- ( Action
- <<{
- UserAction *ua = newUserAction(LATEXT(1));
- ua->file = action_file; ua->line = action_line;
- if ( class_nest_level>0 ) list_add(&class_before_actions, ua);
- else list_add(&BeforeActions, ua);
- }>>
- | laction
- | lmember /* MR1 */
- | lprefix /* MR1 */
- | aLexclass
- | token
- | error
- | tclass
- | aPred /* MR11 */
- | default_exception_handler
- | class_def
- | "\}"
- <<
- if ( class_nest_level==0 )
- warn("missing class definition for trailing '}'");
- class_nest_level--;
- >>
- )*
-
- rule <<g=$3; SynDiag = (Junction *) $3.left;>>
- ( rule
-
- <<if ( $1.left!=NULL ) {
- g.right = NULL;
-
-/* MR21a */ /* Avoid use of a malformed graph when CannotContinue */
-/* MR21a */ /* is already set */
-/* MR21a */
-/* MR21a */ if (! (CannotContinue && g.left == NULL)) {
-/* MR21a */ g = Or(g, $1);
-/* MR21a */ }
-/* MR21a */ }
- >>
-
- | aLexclass
- | token
- | error
- | tclass
- | aPred /* MR11 */
- | class_def
- | "\}"
- <<
- if ( class_nest_level==0 )
- warn("missing class definition for trailing '}'");
- class_nest_level--;
- >>
- )*
- ( Action
- <<{
- UserAction *ua = newUserAction(LATEXT(1));
- ua->file = action_file; ua->line = action_line;
- if ( class_nest_level>0 ) list_add(&class_after_actions, ua);
- else list_add(&AfterActions, ua);
- }>>
- | laction
- | lmember /* MR1 */
- | lprefix /* MR1 */
- | error
- | tclass
- | class_def
- | aPred /* MR11 */
- | "\}"
- <<
- if ( class_nest_level==0 )
- warn("missing class definition for trailing '}'");
- class_nest_level--;
- >>
- )*
- Eof
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule class_def */
-
-class_def
- : <<int go=1; char name[MaxRuleName+1];>>
- "class"
- ( NonTerminal <<if(go) strncpy(name,LATEXT(1),MaxRuleName);>>
- | TokenTerm <<if(go) strncpy(name,LATEXT(1),MaxRuleName);>>
- )
- <<
- if ( CurrentClassName[0]!='\0' && strcmp(CurrentClassName,name)!=0
- && GenCC ) {
- err("only one grammar class allowed in this release");
- go = 0;
- }
- else strcpy(CurrentClassName, name);
- >>
- <<if ( !GenCC ) { err("class meta-op used without C++ option"); }>>
-
-/* MR10 */ (~ "\{"
-/* MR10 */ <<if (ClassDeclStuff == NULL) {
-/* MR10 */ ClassDeclStuff=(char *)calloc(MaxClassDeclStuff+1,sizeof(char));
-/* MR10 */ };
-/* MR10 */ strncat(ClassDeclStuff," ",MaxClassDeclStuff);
-/* MR10 */ strncat(ClassDeclStuff,LATEXT(1),MaxClassDeclStuff);
-/* MR22 */ do {
-/* MR22 */ if (0 == strcmp(LATEXT(1),"public")) break;
-/* MR22 */ if (0 == strcmp(LATEXT(1),"private")) break;
-/* MR22 */ if (0 == strcmp(LATEXT(1),"protected")) break;
-/* MR22 */ if (0 == strcmp(LATEXT(1),"virtual")) break;
-/* MR22 */ if (0 == strcmp(LATEXT(1),",")) break;
-/* MR22 */ if (0 == strcmp(LATEXT(1),":")) break;
-/* MR22 */ if (BaseClassName != NULL) break;
-/* MR22 */ BaseClassName=(char *)calloc(strlen(LATEXT(1))+1,sizeof(char));
-/* MR22 */ require(BaseClassName!=NULL, "rule grammar: cannot allocate base class name");
-/* MR22 */ strcpy(BaseClassName,LATEXT(1));
-/* MR22 */ } while (0);
-/* MR10 */ >>
-/* MR10 */ )*
-
- "\{"
- <<
- no_classes_found = 0;
- if ( class_nest_level>=1 ) {warn("cannot have nested classes");}
- else class_nest_level++;
- >>
- ;
- <<CannotContinue=TRUE;>>
-
-/*
- * Build -o-->o-R-o-->o- where -o-R-o- is the block from rule 'block'.
- * Construct the RuleBlk front and EndRule node on the end of the
- * block. This is used to add FOLLOW pointers to the rule end. Add the
- * new rule name to the Rname hash table and sets its rulenum.
- * Store the parameter definitions if any are found.
- *
- * Note that locks are required on the RuleBlk and EndRule nodes to thwart
- * infinite recursion.
- *
- * Return the left graph pointer == NULL to indicate error/dupl rule def.
- */
-
-/* rule rule */
-
-rule : <<
-
- ExceptionGroup *eg;
- RuleEntry *q; Junction *p; Graph r; int f, l; ECnode *e;
- set toksrefd, rulesrefd;
- char *pdecl=NULL, *ret=NULL, *a; CurRetDef = CurParmDef = NULL;
- CurExGroups = NULL;
- CurElementLabels = NULL;
- CurAstLabelsInActions = NULL; /* MR27 */
- /* We want a new element label hash table for each rule */
- if ( Elabel!=NULL ) killHashTable(Elabel);
- Elabel = newHashTable();
- attribsRefdFromAction = empty;
- >>
- NonTerminal
- <<q=NULL;
- if ( hash_get(Rname, LATEXT(1))!=NULL ) {
- err(eMsg1("duplicate rule definition: '%s'",LATEXT(1)));
- CannotContinue=TRUE;
- }
- else
- {
- q = (RuleEntry *)hash_add(Rname,
- LATEXT(1),
- (Entry *)newRuleEntry(LATEXT(1)));
- CurRule = q->str;
- }
- CurRuleNode = q;
- f = CurFile; l = zzline;
- NumRules++;
- >>
- { "!" <<if ( q!=NULL ) q->noAST = TRUE;>> }
- { <<;>>
- {"\<"}
- PassAction
- << pdecl = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(pdecl!=NULL, "rule rule: cannot allocate param decl");
- strcpy(pdecl, LATEXT(1));
- CurParmDef = pdecl;
- >>
- }
- { "\>"
- PassAction
- << ret = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(ret!=NULL, "rule rule: cannot allocate ret type");
- strcpy(ret, LATEXT(1));
- CurRetDef = ret;
- >>
- }
- { QuotedTerm <<if ( q!=NULL ) q->egroup=mystrdup(LATEXT(1));>> }
- <<
- if ( GenEClasseForRules && q!=NULL ) {
- e = newECnode;
- require(e!=NULL, "cannot allocate error class node");
- if ( q->egroup == NULL ) {a = q->str; a[0] = (char)toupper(a[0]);}
- else a = q->egroup;
- if ( Tnum( a ) == 0 )
- {
- e->tok = addTname( a );
- list_add(&eclasses, (char *)e);
- if ( q->egroup == NULL ) a[0] = (char)tolower(a[0]);
- /* refers to itself */
- list_add(&(e->elist), mystrdup(q->str));
- }
- else {
- warn(eMsg1("default errclass for '%s' would conflict with token/errclass/tokclass",a));
- if ( q->egroup == NULL ) a[0] = (char)tolower(a[0]);
- free((char *)e);
- }
- }
- >>
- <<BlkLevel++;
- if (BlkLevel >= MAX_BLK_LEVEL) fatal("Blocks nested too deeply");
-/* MR23 */ CurBlockID_array[BlkLevel] = CurBlockID;
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum;
- >>
-
- ":" <<inAlt=1;>>
- block[&toksrefd, &rulesrefd]
- <<r = makeBlk($7,0, NULL /* pFirstSetSymbol */ );
- CurRuleBlk = (Junction *)r.left;
- CurRuleBlk->blockid = CurBlockID;
- CurRuleBlk->jtype = RuleBlk;
- if ( q!=NULL ) CurRuleBlk->rname = q->str;
- CurRuleBlk->file = f;
- CurRuleBlk->line = l;
- CurRuleBlk->pdecl = pdecl;
- CurRuleBlk->ret = ret;
- CurRuleBlk->lock = makelocks();
- CurRuleBlk->pred_lock = makelocks();
- CurRuleBlk->tokrefs = toksrefd;
- CurRuleBlk->rulerefs = rulesrefd;
- p = newJunction(); /* add EndRule Node */
- ((Junction *)r.right)->p1 = (Node *)p;
- r.right = (Node *) p;
- p->jtype = EndRule;
- p->lock = makelocks();
- p->pred_lock = makelocks();
- CurRuleBlk->end = p;
- if ( q!=NULL ) q->rulenum = NumRules;
- $7 = r;
- >>
- <<
- /* MR23 */ CurBlockID_array[BlkLevel] = (-1);
- /* MR23 */ CurAltNum_array[BlkLevel] = (-1);
- --BlkLevel;
- >>
- <<altFixup();leFixup();egFixup();>> /* MR7 */
- ";" <<inAlt=0;>>
- { Action
- << a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(a!=NULL, "rule rule: cannot allocate error action");
- strcpy(a, LATEXT(1));
- CurRuleBlk->erraction = a;
- >>
- }
- ( exception_group > [eg]
- <<if ( eg!=NULL ) {
- list_add(&CurExGroups, (void *)eg);
- if (eg->label == NULL || *eg->label=='\0' ) q->has_rule_exception = 1;
- }
- >>
- )*
- <<if ( q==NULL ) $0.left = NULL; else $0 = $7;>>
- <<CurRuleBlk->exceptions = CurExGroups;>>
- <<CurRuleBlk->el_labels = CurElementLabels;>>
- <<CurRuleNode->ast_labels_in_actions = CurAstLabelsInActions;>> /* MR27 */
- <<CurRuleNode = NULL;>> /* MR27 Moved */
- ;
- <<CannotContinue=TRUE;>>
-
-/*
- * pragma : "{\\}#pragma" "dup\-labeled\-tokens"
- * <<Pragma_DupLabeledTokens=1;>>
- * ;
- */
-
-/* rule laction */
-
-laction : <<char *a;>>
-
- "{\\}#lexaction"
- Action
- <<
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(a!=NULL, "rule laction: cannot allocate action");
- strcpy(a, LATEXT(1));
- list_add(&LexActions, a);
- >>
- ;
- <<CannotContinue=TRUE;>>
-
-/* MR1 */
-/* MR1 11-Apr-97 Provide mechanism for inserting code into DLG class */
-/* MR1 via #lexmember <<....>> & #lexprefix <<...>> */
-/* MR1 */
-
-/* rule lmember */
-
-lmember: <<char *a;>> /* MR1 */
-
-/* MR1 */ "{\\}#lexmember"
-/* MR1 */ Action
-/* MR1 */ <<
-/* MR1 */ if (! GenCC) {
-/* MR1 */ err("Use #lexmember only in C++ mode (to insert code in DLG class header");
-/* MR1 */ } else {
-/* MR1 */ a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
-/* MR1 */ require(a!=NULL, "rule lmember: cannot allocate action");
-/* MR1 */ strcpy(a, LATEXT(1));
-/* MR1 */ list_add(&LexMemberActions, a);
-/* MR1 */ };
-/* MR1 */ >>
-/* MR1 */ ;
-/* MR1 */ <<CannotContinue=TRUE;>>
-
-/* rule lprefix */
-
-lprefix: <<char *a;>> /* MR1 */
-
-/* MR1 */ "{\\}#lexprefix"
-/* MR1 */ Action
-/* MR1 */ <<
-/* MR1 */ if (! GenCC) {
-/* MR1 */ err("Use #lexprefix only in C++ mode (to insert code in DLG class header");
-/* MR1 */ } else {
-/* MR1 */ a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
-/* MR1 */ require(a!=NULL, "rule lprefix: cannot allocate action");
-/* MR1 */ strcpy(a, LATEXT(1));
-/* MR1 */ list_add(&LexPrefixActions, a);
-/* MR1 */ };
-/* MR1 */ >>
-/* MR1 */ ;
-/* MR1 */ <<CannotContinue=TRUE;>>
-
-/*
- * #pred upper <<isupper()>>? predicate literal
- * #pred lower <<islower()>>? predicate literal
- * #pred up_or_low upper || lower predicate expression
- * concealed interdependence
- * #pred up_or_low_2 <<isletter()>>? A || B predicate literal equals predicate expr
- * analyze using lower||upper
- * generate using isLetter()
- */
-
-/* rule aPref */
-
-aPred: <<PredEntry *predEntry=NULL;
- char *name=NULL;
- Predicate *predExpr=NULL;
- char *predLiteral=NULL;
- int save_file;
- int save_line;
- int predExprPresent=0;
- >>
-
- "{\\}#pred"
-
- <<
- MR_usingPredNames=1; /* will need to use -mrhoist version of genPredTree */
- >>
-
- /* used to allow NonTerminal but it caused problems
- when a rule name immediately followed a #pred statement */
-
- TokenTerm <<name=mystrdup(LATEXT(1));>>
-
- <<
- /* don't free - referenced in predicates */
-
- CurPredName=(char *)calloc(1,strlen(name) + 10);
- strcat(CurPredName,"#pred ");
- strcat(CurPredName,name);
-
- predEntry=(PredEntry *) hash_get(Pname,name);
- if (predEntry != NULL) {
- warnFL(eMsg1("#pred %s previously defined - ignored",name),
- FileStr[action_file],action_line);
- name=NULL;
- };
- >>
-
- (
-
- Pred <<predLiteral=mystrdup(LATEXT(1));
- save_line=action_line;
- save_file=action_file;
- >>
-
- {
- predOrExpr>[predExpr] <<predExprPresent=1;>>
- }
-
- <<if (predLiteral != NULL && name != NULL) {
-
- /*
- * predExpr may be NULL due to syntax errors
- * or simply omitted by the user
- */
-
- predEntry=newPredEntry(name);
- predEntry->file=save_file;
- predEntry->line=save_line;
- predExpr=MR_predFlatten(predExpr);
- predEntry->predLiteral=predLiteral;
- if (! predExprPresent || predExpr == NULL) {
- predExpr=new_pred();
- predExpr->expr=predLiteral;
- predExpr->source=newActionNode();
- predExpr->source->action=predExpr->expr;
- predExpr->source->rname=CurPredName;
- predExpr->source->line=action_line;
- predExpr->source->file=action_file;
- predExpr->source->is_predicate=1;
- predExpr->k=predicateLookaheadDepth(predExpr->source);
- };
- predEntry->pred=predExpr;
- hash_add(Pname,name,(Entry *)predEntry);
- predExpr=NULL;
- };
- predicate_free(predExpr);
- >>
-
- |
- <<save_line=zzline; save_file=CurFile;>>
-
- predOrExpr>[predExpr]
-
- <<if (predExpr != NULL && name != NULL) {
- predEntry=newPredEntry(name);
- predEntry->file=CurFile;
- predEntry->line=zzline;
- predExpr=MR_predFlatten(predExpr);
- predEntry->pred=predExpr;
- hash_add(Pname,name,(Entry *)predEntry);
- predExpr=NULL;
- };
- predicate_free(predExpr);
- >>
- )
- {";"}
-;
-
-/* fail */
-
-<<predicate_free(predExpr);
->>
-
-/* rule predOrExpr */
-
-predOrExpr>[Predicate *result] :
- <<Predicate *ORnode;
- Predicate *predExpr;
- Predicate **tail=NULL;
- >>
- predAndExpr>[predExpr]
- <<
- ORnode=new_pred();
- ORnode->expr=PRED_OR_LIST;
- if (predExpr != NULL) {
- ORnode->down=predExpr;
- tail=&predExpr->right;
- };
- >>
- ( "\|\|" predAndExpr>[predExpr]
- <<
- if (predExpr != NULL) {
- *tail=predExpr;
- tail=&predExpr->right;
- };
- >>
- )*
- <<
- $result=ORnode;
- ORnode=NULL;
- >>
-;
-
-/* fail */
-
-<<predicate_free(ORnode);>>
-
-/* rule predAndExpr */
-
-predAndExpr>[Predicate *result] :
- <<Predicate *ANDnode;
- Predicate *predExpr;
- Predicate **tail=NULL;
- >>
- predPrimary>[predExpr]
- <<
- ANDnode=new_pred();
- ANDnode->expr=PRED_AND_LIST;
- if (predExpr != NULL) {
- ANDnode->down=predExpr;
- tail=&predExpr->right;
- };
- >>
- ( "&&" predPrimary>[predExpr]
- <<
- if (predExpr != NULL) {
- *tail=predExpr;
- tail=&predExpr->right;
- };
- >>
- )*
- <<
- $result=ANDnode;
- ANDnode=NULL;
- >>
-;
-
-/* fail */
-
-<<predicate_free(ANDnode);>>
-
-
-/* rule predPrimary */
-
-predPrimary>[Predicate *result] :
- <<
- char *name=NULL;
- PredEntry *predEntry=NULL;
- Predicate *predExpr=NULL;
- >>
-
- TokenTerm <<name=mystrdup(LATEXT(1));>>
-
- <<
- predEntry=(PredEntry *) hash_get(Pname,name);
- if (predEntry == NULL) {
- warnFL(eMsg1("no previously defined #pred with name \"%s\"",name),
- FileStr[CurFile],zzline);
- name=NULL;
- $result=NULL;
- } else {
- predExpr=predicate_dup(predEntry->pred);
- predExpr->predEntry=predEntry;
- $result=predExpr;
- };
- >>
-
- | "\(" predOrExpr>[predExpr] "\)"
- <<
- $result=predExpr;
- >>
-
- | "!" predPrimary>[predExpr]
- <<
- predExpr->inverted=!predExpr->inverted;
- $result=predExpr;
- >>
-;
-
-/* fail */ <<
- predicate_free(predExpr);
- >>
-
-/* rule aLexclass */
-
-aLexclass: "{\\}#lexclass" TokenTerm <<lexclass(mystrdup(LATEXT(1)));>>
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule error */
-
-error : <<char *t=NULL; ECnode *e; int go=1; TermEntry *p;>>
- "{\\}#errclass"
- (<<;>> TokenTerm <<t=mystrdup(LATEXT(1));>>
- | QuotedTerm <<t=mystrdup(LATEXT(1));>>
- )
- <<e = newECnode;
- require(e!=NULL, "cannot allocate error class node");
- e->lexclass = CurrentLexClass;
- if ( Tnum( (t=StripQuotes(t)) ) == 0 )
- {
- if ( hash_get(Texpr, t) != NULL )
- warn(eMsg1("errclass name conflicts with regular expression '%s'",t));
- e->tok = addTname( t );
- set_orel(e->tok, &imag_tokens);
- require((p=(TermEntry *)hash_get(Tname, t)) != NULL,
- "hash table mechanism is broken");
- p->classname = 1; /* entry is errclass name, not token */
- list_add(&eclasses, (char *)e);
- }
- else
- {
- warn(eMsg1("redefinition of errclass or conflict w/token or tokclass '%s'; ignored",t));
- free( (char *)e );
- go=0;
- }
- >>
- "\{"
- ( NonTerminal <<if ( go ) t=mystrdup(LATEXT(1));>>
- | TokenTerm <<if ( go ) t=mystrdup(LATEXT(1));>>
- | QuotedTerm <<if ( go ) t=mystrdup(LATEXT(1));>>
- )
- <<if ( go ) list_add(&(e->elist), t);>>
- (
- ( NonTerminal <<if ( go ) t=mystrdup(LATEXT(1));>>
- | TokenTerm <<if ( go ) t=mystrdup(LATEXT(1));>>
- | QuotedTerm <<if ( go ) t=mystrdup(LATEXT(1));>>
- )
- <<if ( go ) list_add(&(e->elist), t);>>
- )*
- "\}"
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule tclass */
-
-tclass : <<char *t=NULL; TCnode *e; int go=1,tok,totok; TermEntry *p, *term, *toterm;>>
- <<char *akaString=NULL; int save_file; int save_line;>>
- <<char *totext=NULL; >>
- "{\\}#tokclass" TokenTerm <<t=mystrdup(LATEXT(1));>>
- <<e = newTCnode;
- require(e!=NULL, "cannot allocate token class node");
- e->lexclass = CurrentLexClass;
- if ( Tnum( t ) == 0 )
- {
- e->tok = addTname( t );
- set_orel(e->tok, &imag_tokens);
- set_orel(e->tok, &tokclasses);
- require((p=(TermEntry *)hash_get(Tname, t)) != NULL,
- "hash table mechanism is broken");
- p->classname = 1; /* entry is class name, not token */
- p->tclass = e; /* save ptr to this tclass def */
- list_add(&tclasses, (char *)e);
- }
- else
- {
- warn(eMsg1("redefinition of tokclass or conflict w/token '%s'; ignored",t));
- free( (char *)e );
- go=0;
- }
- >>
-/* MR23 */ {
-/* MR23 */ "\("
-/* MR23 */ QuotedTerm
-/* MR23 */ <<akaString=mystrdup(StripQuotes(LATEXT(1)));
-/* MR11 */ save_file=CurFile;save_line=zzline;
-/* MR23 */ >>
-/* MR23 */ "\)"
-/* MR23 */ }
-/* MR23 */
-/* MR23 */
-/* MR23 */ <<
-/* MR23 */ if (p!= NULL && akaString != NULL) {
-/* MR23 */ if (p->akaString != NULL) {
-/* MR23 */ if (strcmp(p->akaString,akaString) != 0) {
-/* MR23 */ warnFL(eMsg2("this #tokclass statment conflicts with a previous #tokclass %s(\"%s\") statement",
-/* MR23 */ t,p->akaString),
-/* MR23 */ FileStr[save_file],save_line);
-/* MR23 */ };
-/* MR23 */ } else {
-/* MR23 */ p->akaString=akaString;
-/* MR23 */ };
-/* MR23 */ };
-/* MR23 */ >>
-
- "\{"
- (
- ( TokenTerm
- <<if ( go ) {
- term = (TermEntry *) hash_get(Tname, LATEXT(1));
- if ( term==NULL && UserDefdTokens ) {
- err("implicit token definition not allowed with #tokdefs");
- go = 0;
- }
- else {t=mystrdup(LATEXT(1)); tok=addTname(LATEXT(1));}
- }>>
-
- {
- ".."
- TokenTerm
-
- <<if ( go ) {
- toterm = (TermEntry *) hash_get(Tname, LATEXT(1));
- if ( toterm==NULL && UserDefdTokens ) {
- err("implicit token definition not allowed with #tokdefs");
- go = 0;
- } else {
- totext=mystrdup(LATEXT(1)); totok=addTname(LATEXT(1));
- }
- }
- >>
- }
-
- | QuotedTerm
- <<if ( go ) {
- term = (TermEntry *) hash_get(Texpr, LATEXT(1));
- if ( term==NULL && UserDefdTokens ) {
- err("implicit token definition not allowed with #tokdefs");
- go = 0;
- }
- else {t=mystrdup(LATEXT(1)); tok=addTexpr(LATEXT(1));}
- }>>
- )
- <<if ( go ) {
- if (totext == NULL) {
- list_add(&(e->tlist), t);
- } else {
- list_add(&(e->tlist),"..");
- list_add(&(e->tlist),t);
- list_add(&(e->tlist),totext);
- }
- totext=NULL;
- }
- >>
- )+ // MR15 Manfred Kogler - forbid empty #tokclass sets (was "+")
- "\}"
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule token */
-
-token : <<char *t=NULL, *e=NULL, *a=NULL; int tnum=0;>>
- <<char *akaString=NULL; TermEntry *te;int save_file=0,save_line=0;>> /* MR11 */
- "{\\}#token"
-
-/* MR1 10-Apr-97 MR1 Allow shift right operator in DLG actions */
-/* MR1 Danger when parser feedback to lexer */
-/* MR1 */
-
- <<tokenActionActive=1;>> /* MR1 */
- { TokenTerm <<t=mystrdup(LATEXT(1));>>
-
-/* MR11 */ {
-/* MR11 */ "\("
-/* MR11 */ QuotedTerm
-/* MR11 */ <<akaString=mystrdup(StripQuotes(LATEXT(1)));
-/* MR11 */ save_file=CurFile;save_line=zzline;
-/* MR11 */ >>
-/* MR11 */ "\)"
-/* MR11 */ }
-
- { "=" "[0-9]+" /* define the token type number */
- <<tnum = atoi(LATEXT(1));>>
- }
- }
- { QuotedTerm <<e=mystrdup(LATEXT(1));>> }
- { Action
- <<
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(a!=NULL, "rule token: cannot allocate action");
- strcpy(a, LATEXT(1));
- >>
- }
-
- { ";" } /* MR11 */
-
- <<chkToken(t, e, a, tnum);>>
-
- <<if (t != NULL) {
- te=(TermEntry *)hash_get(Tname,t);
- if (te != NULL && akaString != NULL) {
- if (te->akaString != NULL) {
- if (strcmp(te->akaString,akaString) != 0) {
- warnFL(eMsg2("this #token statment conflicts with a previous #token %s(\"%s\") statement",
- t,te->akaString),
- FileStr[save_file],save_line);
- };
- } else {
- te->akaString=akaString;
- };
- };
- };
- >>
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule block */
-
-block[set *toksrefd, set *rulesrefd]
- : <<
- Graph g, b;
- set saveblah;
- int saveinalt = inAlt;
- ExceptionGroup *eg;
- *$toksrefd = empty;
- *$rulesrefd = empty;
- set_clr(AST_nodes_refd_in_actions);
- CurBlockID++;
-/* MR23 */ CurBlockID_array[BlkLevel] = CurBlockID;
- CurAltNum = 1;
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum;
- saveblah = attribsRefdFromAction;
- attribsRefdFromAction = empty;
- >>
-
- alt[toksrefd,rulesrefd] <<b = g = $1;>>
-
- <<
- if ( ((Junction *)g.left)->p1->ntype == nAction )
- {
- ActionNode *actionNode=(ActionNode *)
- ( ( (Junction *)g.left) ->p1);
- if (!actionNode->is_predicate )
- {
- actionNode->init_action = TRUE;
-/* MR12c */ if (actionNode->noHoist) {
-/* MR12c */ errFL("<<nohoist>> appears as init-action - use <<>> <<nohoist>>",
-/* MR12c */ FileStr[actionNode->file],actionNode->line);
-/* MR12c */ };
- }
- }
- ((Junction *)g.left)->blockid = CurBlockID;
- >>
-
- ( exception_group > [eg]
- <<
- if ( eg!=NULL ) {
-/* MR7 ***** eg->altID = makeAltID(CurBlockID,CurAltNum); *****/
-/* MR7 ***** CurAltStart->exception_label = eg->altID; *****/
- list_add(&CurExGroups, (void *)eg);
- }
- >>
- )*
- <<CurAltNum++;
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum;
- >>
-
- ( "\|" <<inAlt=1;>>
- alt[toksrefd,rulesrefd] <<g = Or(g, $2);>>
- <<
- ((Junction *)g.left)->blockid = CurBlockID;
- >>
-
- ( exception_group > [eg]
- <<
- if ( eg!=NULL ) {
-/* MR7 ***** eg->altID = makeAltID(CurBlockID,CurAltNum); *****/
-/* MR7 ***** CurAltStart->exception_label = eg->altID; *****/
- list_add(&CurExGroups, (void *)eg);
- }
- >>
- )*
-
- <<CurAltNum++;
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum;
- >>
-
- )*
- <<$0 = b;>>
- <<attribsRefdFromAction = saveblah; inAlt = saveinalt;>>
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule alt */
-
-alt[set *toksrefd, set *rulesrefd]
- : <<int n=0; Graph g; int e_num=0, old_not=0; Node *node; set elems, dif;
- int first_on_line = 1, use_def_MT_handler = 0;
- g.left=NULL; g.right=NULL;
-
- CurAltStart = NULL;
- elems = empty;
- inAlt = 1;
- >>
- { "\@" /* handle MismatchedToken signals with default handler */
- <<use_def_MT_handler = 1;>>
- }
-
- ( <<;>> /* MR9 Removed unreferenced variable "tok" */
- { <<old_not=0;>> "\~" <<old_not=1;>> }
- element[old_not, first_on_line, use_def_MT_handler] > [node]
- <<if ( node!=NULL && node->ntype!=nAction ) first_on_line = 0;>>
- <<
- if ( $2.left!=NULL ) {
- g = Cat(g, $2);
- n++;
- if ( node!=NULL ) {
- if ( node->ntype!=nAction ) e_num++;
- /* record record number of all rule and token refs */
- if ( node->ntype==nToken ) {
- TokNode *tk = (TokNode *)((Junction *)$2.left)->p1;
- tk->elnum = e_num;
- set_orel(e_num, &elems);
- }
- else if ( node->ntype==nRuleRef ) {
- RuleRefNode *rn = (RuleRefNode *)((Junction *)$2.left)->p1;
- rn->elnum = e_num;
- set_orel(e_num, $rulesrefd);
- }
- }
- }
- >>
- )*
- <<if ( n == 0 ) g = emptyAlt();
- $0 = g;
- /* We want to reduce number of LT(i) calls and the number of
- * local attribute variables in C++ mode (for moment, later we'll
- * do for C also). However, if trees are being built, they
- * require most of the attrib variables to create the tree nodes
- * with; therefore, we gen a token ptr for each token ref in C++
- */
- if ( GenCC && !GenAST )
- {
- /* This now free's the temp set -ATG 5/6/95 */
- set temp;
- temp = set_and(elems, attribsRefdFromAction);
- set_orin($toksrefd, temp);
- set_free(temp);
- }
- else set_orin($toksrefd, elems);
- if ( GenCC ) {
- dif = set_dif(attribsRefdFromAction, elems);
- if ( set_deg(dif)>0 )
- err("one or more $i in action(s) refer to non-token elements");
- set_free(dif);
- }
- set_free(elems);
- set_free(attribsRefdFromAction);
- inAlt = 0;
- >>
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule element_label */
-
-element_label > [LabelEntry *label]
- : <<TermEntry *t=NULL; LabelEntry *l=NULL; RuleEntry *r=NULL; char *lab;>>
- LABEL <<lab = mystrdup(LATEXT(1));>>
- <<
- UsedNewStyleLabel = 1;
- if ( UsedOldStyleAttrib ) err("cannot mix with new-style labels with old-style $i");
- t = (TermEntry *) hash_get(Tname, lab);
- if ( t==NULL ) t = (TermEntry *) hash_get(Texpr, lab);
- if ( t==NULL ) r = (RuleEntry *) hash_get(Rname, lab);
- if ( t!=NULL ) {
- err(eMsg1("label definition clashes with token/tokclass definition: '%s'", lab));
- $label = NULL;
- }
- else if ( r!=NULL ) {
- err(eMsg1("label definition clashes with rule definition: '%s'", lab));
- $label = NULL;
- }
- else {
- /* we don't clash with anybody else */
- l = (LabelEntry *) hash_get(Elabel, lab);
- if ( l==NULL ) { /* ok to add new element label */
- l = (LabelEntry *)hash_add(Elabel,
- lab,
- (Entry *)newLabelEntry(lab));
- /* add to list of element labels for this rule */
- list_add(&CurElementLabels, (void *)lab);
-/* MR7 */ leAdd(l); /* list of labels waiting for exception group definitions */
- $label = l;
- }
- else {
- err(eMsg1("label definitions must be unique per rule: '%s'", lab));
- $label = NULL;
- }
- }
- >>
- ":"
- ;
-
-/* rule element */
-
-element[int old_not, int first_on_line, int use_def_MT_handler] > [Node *node]
- : <<
- Attrib blk;
- Predicate *pred = NULL;
- int local_use_def_MT_handler=0;
- ActionNode *act;
- RuleRefNode *rr;
- set toksrefd, rulesrefd;
- TermEntry *term;
- TokNode *p=NULL; RuleRefNode *q; int approx=0;
- LabelEntry *label=NULL;
- int predMsgDone=0;
- int semDepth=0;
- int ampersandStyle;
- int height; /* MR11 */
- int equal_height; /* MR11 */
-
- char* pFirstSetSymbol = NULL; /* MR21 */
-
- $node = NULL;
- >>
- {element_label>[label]}
- ( TokenTerm
- <<
- term = (TermEntry *) hash_get(Tname, LATEXT(1));
- if ( term==NULL && UserDefdTokens ) {
- err("implicit token definition not allowed with #tokdefs");
- $$.left = $$.right = NULL;
- }
- else {
- $$ = buildToken(LATEXT(1));
- p=((TokNode *)((Junction *)$$.left)->p1);
- term = (TermEntry *) hash_get(Tname, LATEXT(1));
- require( term!= NULL, "hash table mechanism is broken");
- p->tclass = term->tclass;
- p->complement = $old_not;
- if ( label!=NULL ) {
- p->el_label = label->str;
- label->elem = (Node *)p;
- }
- }
- >>
- { ".."
- ( QuotedTerm
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>
- | TokenTerm
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>
- )
- }
- <<
- if ( p!=NULL && (p->upper_range!=0 || p->tclass || $old_not) )
- list_add(&MetaTokenNodes, (void *)p);
- >>
- ( "^" <<if ( p!=NULL ) p->astnode=ASTroot;>>
- | <<if ( p!=NULL ) p->astnode=ASTchild;>>
- | "!" <<if ( p!=NULL ) p->astnode=ASTexclude;>>
- )
- { "\@" <<local_use_def_MT_handler = 1;>> }
- <<
- if ( p!=NULL && $first_on_line ) {
- CurAltStart = (Junction *)$$.left;
- altAdd(CurAltStart); /* MR7 */
- p->altstart = CurAltStart;
- }
- if ( p!=NULL )
- p->use_def_MT_handler = $use_def_MT_handler || local_use_def_MT_handler;
- $node = (Node *)p;
- >>
- | QuotedTerm
- <<
- term = (TermEntry *) hash_get(Texpr, LATEXT(1));
- if ( term==NULL && UserDefdTokens ) {
- err("implicit token definition not allowed with #tokdefs");
- $$.left = $$.right = NULL;
- }
- else {
- $$ = buildToken(LATEXT(1)); p=((TokNode *)((Junction *)$$.left)->p1);
- p->complement = $old_not;
- if ( label!=NULL ) {
- p->el_label = label->str;
- label->elem = (Node *)p;
- }
- }
- >>
- { ".."
- ( QuotedTerm
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>
- | TokenTerm
- <<if ( p!=NULL ) setUpperRange(p, LATEXT(1));>>
- )
- }
- ( "^" <<if ( p!=NULL ) p->astnode=ASTroot;>>
- | <<if ( p!=NULL ) p->astnode=ASTchild;>>
- | "!" <<if ( p!=NULL ) p->astnode=ASTexclude;>>
- )
- { "\@" <<local_use_def_MT_handler = 1;>> }
- <<
- if ( p!=NULL && (p->upper_range!=0 || p->tclass || $old_not) )
- list_add(&MetaTokenNodes, (void *)p);
- >>
- <<
- if ( $first_on_line ) {
- CurAltStart = (Junction *)$$.left;
- altAdd(CurAltStart); /* MR7 */
- p->altstart = CurAltStart;
- }
- if ( p!=NULL )
- p->use_def_MT_handler = $use_def_MT_handler || local_use_def_MT_handler;
- $node = (Node *)p;
- >>
-
- | <<if ( $old_not ) warn("~ WILDCARD is an undefined operation (implies 'nothing')");>>
- "."
- <<$$ = buildWildCard(LATEXT(1)); p=((TokNode *)((Junction *)$$.left)->p1);>>
- ( "^" <<p->astnode=ASTroot;>>
- | <<p->astnode=ASTchild;>>
- | "!" <<p->astnode=ASTexclude;>>
- )
- <<list_add(&MetaTokenNodes, (void *)p);>>
- <<
- if ( $first_on_line ) {
- CurAltStart = (Junction *)$$.left;
- altAdd(CurAltStart); /* MR7 */
- p->altstart = CurAltStart;
- if ( label!=NULL ) {
- p->el_label = label->str;
- label->elem = (Node *)p;
- }
- }
- $node = (Node *)p;
- >>
-
- | <<if ( $old_not ) warn("~ NONTERMINAL is an undefined operation");>>
- NonTerminal
- <<$$ = buildRuleRef(LATEXT(1));>>
- { "!" <<q = (RuleRefNode *) ((Junction *)$$.left)->p1;
- q->astnode=ASTexclude;>>
- }
- { {"\<"}
- PassAction <<addParm(((Junction *)$$.left)->p1, LATEXT(1));>>
- }
- <<rr=(RuleRefNode *) ((Junction *)$$.left)->p1;>>
- { <<char *a;>>
- "\>"
- PassAction
- <<
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(a!=NULL, "rule element: cannot allocate assignment");
- strcpy(a, LATEXT(1));
- rr->assign = a;
- >>
- }
- <<
- if ( label!=NULL ) {
- rr->el_label = label->str;
- label->elem = (Node *)rr;
- }
- if ( $first_on_line ) {
- CurAltStart = (Junction *)$$.left;
- altAdd(CurAltStart); /* MR7 */
- ((RuleRefNode *)((Junction *)$$.left)->p1)->altstart = CurAltStart;
- }
- $node = (Node *)rr;
- >>
- )
-
- | <<if ( $old_not ) warn("~ ACTION is an undefined operation");>>
- Action <<$0 = buildAction(LATEXT(1),action_file,action_line, 0);>>
- <<if ( $first_on_line ) { /* MR7 */
- CurAltStart = (Junction *)$0.left; /* MR7 */
- altAdd(CurAltStart); /* MR7 */
- };>> /* MR7 */
- <<$node = (Node *) ((Junction *)$0.left)->p1;>>
-
- | <<if ( $old_not ) warn("~ SEMANTIC-PREDICATE is an undefined operation");>>
- Pred <<$0 = buildAction(LATEXT(1),action_file,action_line, 1);>>
- <<act = (ActionNode *) ((Junction *)$0.left)->p1;>>
- <<if (numericActionLabel) { /* MR10 */
- list_add(&NumericPredLabels,act); /* MR10 */
- numericActionLabel=0; /* MR10 */
- }; /* MR10 */
- >>
- { <<char *a;>>
- PassAction
- <<
- a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(a!=NULL, "rule element: cannot allocate predicate fail action");
- strcpy(a, LATEXT(1));
- act->pred_fail = a;
- >>
- }
- <<if ( $first_on_line ) { /* MR7 */
- CurAltStart = (Junction *)$0.left; /* MR7 */
- altAdd(CurAltStart); /* MR7 */
- };>> /* MR7 */
- <<$node = (Node *)act;>>
-
- | <<if ( $old_not ) warn("~ BLOCK is an undefined operation");>>
- <<BlkLevel++;
- if (BlkLevel >= MAX_BLK_LEVEL) fatal("Blocks nested too deeply");
-/* MR23 */ CurBlockID_array[BlkLevel] = CurBlockID;
-/* MR23 */ CurAltNum_array[BlkLevel] = CurAltNum;
- >>
- { Pragma
- ( "approx" <<approx=LL_k;>>
- | "LL\(1\)" <<approx = 1;>> /* MR20 */
- | "LL\(2\)" <<approx = 2;>> /* MR20 */
- )
- }
-
-/* MR21 */ { FirstSetSymbol
-/* MR21 */ "\("
-/* MR21 */ ( NonTerminal
-/* MR21 */ <<
-/* MR21 */ pFirstSetSymbol = (char *) calloc(strlen(LATEXT(1))+1,
-/* MR21 */ sizeof(char));
-/* MR21 */ require(pFirstSetSymbol!=NULL,
-/* MR21 */ "cannot allocate first set name");
-/* MR21 */ strcpy(pFirstSetSymbol, LATEXT(1));
-/* MR21 */ >>
-/* MR21 */ | TokenTerm
-/* MR21 */ <<
-/* MR21 */ pFirstSetSymbol = (char *) calloc(strlen(LATEXT(1))+1,
-/* MR21 */ sizeof(char));
-/* MR21 */ require(pFirstSetSymbol!=NULL,
-/* MR21 */ "cannot allocate first set name");
-/* MR21 */ strcpy(pFirstSetSymbol, LATEXT(1));
-/* MR21 */ >>
-/* MR21 */ )
-/* MR21 */ "\)"
-/* MR21 */ }
-
- (
-
- "\(" block[&toksrefd,&rulesrefd] "\)"
- <<blk = $$ = $2;
- /* MR23 */ CurBlockID_array[BlkLevel] = (-1);
- /* MR23 */ CurAltNum_array[BlkLevel] = (-1);
- --BlkLevel;
- >>
-
- ( "\*" <<$$ = makeLoop($$,approx,pFirstSetSymbol);>>
- | "\+" <<$$ = makePlus($$,approx,pFirstSetSymbol);>>
- | "?"
- (
- ( "=>" <<ampersandStyle=0;>>
- | "&&" <<ampersandStyle=1;>> /* MR10 (g)? && <<p>>? */
- )
- Pred /* generalized predicate */
- /* first make into a predicate */
- <<$$ = buildAction(LATEXT(1),action_file,action_line,1);>>
- <<act = (ActionNode *) ((Junction *)$$.left)->p1;>>
- <<semDepth=predicateLookaheadDepth(act);>> /* MR10 */
- <<if (numericActionLabel) { /* MR10 */
- list_add(&NumericPredLabels,act); /* MR10 */
- numericActionLabel=0; /* MR10 */
- }; /* MR10 */
- >>
- { <<char *a;>>
- PassAction
- <<
- a = (char *)calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(a!=NULL, "rule element: cannot allocate predicate fail action");
- strcpy(a, LATEXT(1));
- act->pred_fail = a;
- >>
- }
- <<if ($first_on_line) { /* MR7 */
- CurAltStart=(Junction *)$$.left; /* MR7 */
- altAdd(CurAltStart); /* MR7 */
- };>>
- <<$node = (Node *)act;>>
-
- /* for now, just snag context */
- <<
- pred = computePredFromContextGuard(blk,&predMsgDone); /* MR10 */
- if ( pred==NULL) { /* MR10 */
- if ( !predMsgDone) err("invalid or missing context guard"); /* MR10 */
- predMsgDone=1; /* MR10 */
- } else { /* MR10 */
- act->guardNodes=(Junction *)blk.left; /* MR11 */
- pred->expr = act->action;
- pred->source = act;
-/* MR10 */ pred->ampersandStyle = ampersandStyle; /* 0 means (g)? => ... 1 means (g)? && ... */
-/* MR13 */ if (pred->tcontext != NULL) {
-/* MR13 */ height=MR_max_height_of_tree(pred->tcontext);
-/* MR13 */ equal_height=MR_all_leaves_same_height(pred->tcontext,height);
-/* MR13 */ if (! equal_height) {
-/* MR13 */ errFL("in guarded predicates all tokens in the guard must be at the same height",
-/* MR13 */ FileStr[act->file],act->line);
-/* MR13 */ };
-/* MR13 */ }
-/* MR10 */ if (ampersandStyle) {
-/* MR10 */ act->ampersandPred = pred;
-/* MR11 */ if (! HoistPredicateContext) {
-/* MR11 */ errFL("without \"-prc on\" (guard)? && <<pred>>? ... doesn't make sense",
-/* MR11 */ FileStr[act->file],act->line);
-/* MR11 */ };
-/* MR10 */ } else {
-/* MR10 */ act->guardpred = pred;
-/* MR10 */ };
-/* MR10 */ if (pred->k != semDepth) {
-/* MR10 */ warn(eMsgd2("length of guard (%d) does not match the length of semantic predicate (%d)",
-/* MR10 */ pred->k,semDepth));
-/* MR10 */ };
- }
- >>
- | <<$$ = makeBlk($$,approx,pFirstSetSymbol);
- FoundGuessBlk = 1;
- ((Junction *) ((Junction *)$$.left)->p1)->guess=1;
- if ( !$first_on_line ) {
- err("(...)? predicate must be first element of production");
- }
- >>
- )
- | <<$$ = makeBlk($$,approx,pFirstSetSymbol);>>
- )
- <<
- if ( pred==NULL && !predMsgDone) { /* MR10 */
- ((Junction *)((Junction *)$$.left)->p1)->blockid = CurBlockID;
- ((Junction *)((Junction *)$$.left)->p1)->tokrefs = toksrefd;
- ((Junction *)((Junction *)$$.left)->p1)->rulerefs = rulesrefd;
- if ( $first_on_line ) { /* MR7 */
- CurAltStart = (Junction *)((Junction *)((Junction *)$$.left)->p1); /* MR7 */
- altAdd(CurAltStart); /* MR7 */
- }; /* MR7 */
- $node = (Node *) ((Junction *)$$.left)->p1;
- }
- >>
-
- | "\{" block[&toksrefd,&rulesrefd]
- <<$$ = makeOpt($2,approx,pFirstSetSymbol);
- /* MR23 */ CurBlockID_array[BlkLevel] = (-1);
- /* MR23 */ CurAltNum_array[BlkLevel] = (-1);
- --BlkLevel;
- >>
- "\}"
- <<
- ((Junction *)((Junction *)$$.left)->p1)->blockid = CurBlockID;
- ((Junction *)((Junction *)$$.left)->p1)->tokrefs = toksrefd;
- ((Junction *)((Junction *)$$.left)->p1)->rulerefs = rulesrefd;
- >>
- <<if ( $first_on_line ) { /* MR7 */
- CurAltStart = (Junction *) ((Junction *)((Junction *)$$.left)->p1); /* MR7 */
- altAdd(CurAltStart); /* MR7 */
- };
- >>
- <<$node = (Node *) ((Junction *)$$.left)->p1;>>
-
- )
-
-/* Error catching alternatives */
- | "\*" <<warn("don't you want a ')' with that '*'?"); CannotContinue=TRUE;>>
- | "\+" <<warn("don't you want a ')' with that '+'?"); CannotContinue=TRUE;>>
- | "\>" <<warn("'>' can only appear after a nonterminal"); CannotContinue=TRUE;>>
- | PassAction <<warn("[...] out of context 'rule > [...]'");
- CannotContinue=TRUE;>>
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule default_exception_handler */
-
-default_exception_handler
- : exception_group > [DefaultExGroup]
- ;
-
-/* rule exception_group */
-
-exception_group > [ExceptionGroup *eg]
- : <<ExceptionHandler *h; LabelEntry *label=NULL; /* MR6 */
- FoundException = 1; FoundExceptionGroup = 1;>> /* MR6 */
-
- "exception" <<$eg = (ExceptionGroup *)calloc(1, sizeof(ExceptionGroup));>>
- { <<char *p;>>
- PassAction /* did they attach a label? */
- <<
- p = LATEXT(1)+1;
- p[strlen(p)-1] = '\0'; /* kill trailing space */
- label = (LabelEntry *) hash_get(Elabel, LATEXT(1)+1);
- if ( label==NULL )
- {
- err(eMsg1("unknown label in exception handler: '%s'", LATEXT(1)+1));
- }
- >>
- }
- ( exception_handler > [h]
- <<list_add(&($eg->handlers), (void *)h);>>
- )*
- { "default" ":" Action
- <<{
- ExceptionHandler *eh = (ExceptionHandler *)
- calloc(1, sizeof(ExceptionHandler));
- char *a = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require(eh!=NULL, "exception: cannot allocate handler");
- require(a!=NULL, "exception: cannot allocate action");
- strcpy(a, LATEXT(1));
- eh->action = a;
- eh->signalname = (char *) calloc(strlen("default")+1, sizeof(char));
- require(eh->signalname!=NULL, "exception: cannot allocate sig name");
- strcpy(eh->signalname, "default");
- list_add(&($eg->handlers), (void *)eh);
- }>>
- }
-
- <<
- if ( label!=NULL ) {
- /* Record ex group in sym tab for this label */
- if ( label->ex_group!=NULL ) {
- err(eMsg1("duplicate exception handler for label '%s'",label->str));
- } else {
- label->ex_group = $eg;
- /* Label the exception group itself */
- $eg->label = label->str;
- /* Make the labelled element pt to the exception also */
-/* MR6 */ if (label->elem == NULL) {
-/* MR6 */ err(eMsg1("reference in exception handler to undefined label '%s'",label->str));
-/* MR6 */ } else {
- switch ( label->elem->ntype ) {
- case nRuleRef :
- {
- RuleRefNode *r = (RuleRefNode *)label->elem;
- r->ex_group = $eg;
- break;
- }
- case nToken :
- {
- TokNode *t = (TokNode *)label->elem;
- t->ex_group = $eg;
- break;
- }
- } /* end switch */
-/* MR6 */ }; /* end test on label->elem */
- } /* end test on label->ex_group */
-
- } /* end test on exception label */
-
-/* MR7 */
-/* MR7 */ if (BlkLevel == 1 && label == NULL) {
-/* MR7 */ $eg->forRule=1;
-/* MR7 */ } else if (label == NULL) {
-/* MR7 */ $eg->altID = makeAltID(CurBlockID_array[BlkLevel], CurAltNum_array[BlkLevel]);
-/* MR7 */ egAdd($eg);
-/* MR7 */ } else {
-/* MR7 */ $eg->labelEntry=label;
-/* MR7 */ };
-/* MR7 */
-/* MR7 */ /* You may want to remove this exc from the rule list */
-/* MR7 */ /* and handle at the labeled element site. */
-/* MR7 */
-/* MR7 */ if (label != NULL) {
-/* MR7 */ $eg = NULL;
-/* MR7 */ };
-
- >>
- ;
- <<CannotContinue=TRUE;>>
-
-/* rule exception_handler */
-
-exception_handler > [ExceptionHandler *eh]
- : <<;>> /* MR9 Removed unreferenced variable "a" */
- "catch"
- <<
- $eh = (ExceptionHandler *)calloc(1, sizeof(ExceptionHandler));
- require($eh!=NULL, "exception: cannot allocate handler");
- >>
- ( NonTerminal
- <<
- $eh->signalname = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require($eh->signalname!=NULL, "exception: cannot allocate sig name");
- strcpy($eh->signalname, LATEXT(1));
- >>
- | TokenTerm
- <<
- $eh->signalname = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require($eh->signalname!=NULL, "exception: cannot allocate sig name");
- strcpy($eh->signalname, LATEXT(1));
- >>
- )
- ":"
- { <<$eh->action = NULL;>>
- Action
- <<
- $eh->action = (char *) calloc(strlen(LATEXT(1))+1, sizeof(char));
- require($eh->action!=NULL, "exception: cannot allocate action");
- strcpy($eh->action, LATEXT(1));
- >>
- }
- ;
- <<CannotContinue=TRUE;>>
-
-#token NonTerminal "[a-z] [A-Za-z0-9_]*"
- <<
- while ( zzchar==' ' || zzchar=='\t' ) {
- zzadvance();
- }
- if ( zzchar == ':' && inAlt ) NLA = LABEL;
- >>
-#token TokenTerm "[A-Z] [A-Za-z0-9_]*"
- <<
- while ( zzchar==' ' || zzchar=='\t' ) {
- zzadvance();
- }
- if ( zzchar == ':' && inAlt ) NLA = LABEL;
- >>
-#token "{\\}#[A-Za-z0-9_]*" <<warn(eMsg1("unknown meta-op: %s",LATEXT(1))); zzskip(); >>
-
-#lexclass PARSE_ENUM_FILE
-
-#token "[\t\ ]+" << zzskip(); >> /* Ignore White */
-#token "\n|\r|\r\n" << zzline++; zzskip(); >> /* Track Line # */
-#token "//" << zzmode(TOK_DEF_CPP_COMMENTS); zzmore(); >>
-#token "/\*" << zzmode(TOK_DEF_COMMENTS); zzskip(); >>
-#token "#ifdef" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>
-#token "#if" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>
-#token "#ifndef" << ; >>
-#token "#else" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>
-#token "#endif" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>
-#token "#undef" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>
-#token "#import" << zzmode(TOK_DEF_CPP_COMMENTS); zzskip(); >>
-#token "@" << ; >>
-
-/* rule enum_file */
-
-enum_file[char *fname]
- : { "#ifndef" ID
- { "#define" ID /* ignore if it smells like a gate */
- /* First #define after the first #ifndef (if any) is ignored */
- }
- }
- ( ( enum_def[$fname] )+
- | defines[$fname]
- )
- |
- ;
-
-/* rule defines */
-
-defines[char *fname]
- : <<int v; int maxt=(-1); char *t;>> /* MR3 */
- (
- "#define" ID
- <<t = mystrdup(LATEXT(1));>>
- INT
- <<
- v = atoi(LATEXT(1));
-/* fprintf(stderr, "#token %s=%d\n", t, v);*/
-
- /* MR2 Andreas Magnusson (Andreas.Magnusson@mailbox.swipnet.se) */
- /* MR2 Fix to bug introduced by 1.33MR1 for #tokdefs */
- /* MR2 Don't let #tokdefs be confused by */
- /* MR2 DLGminToken and DLGmaxToken */
-
- if ( ! isDLGmaxToken(t)) { /* MR2 */
- TokenNum = v;
- if ( v>maxt ) maxt=v;
- if ( Tnum( t ) == 0 ) {
- addForcedTname( t, v );
- } else {
- warnFL(eMsg1("redefinition of token %s; ignored",t),$fname,zzline);
- };
- };
- >>
- )+
- <<TokenNum = maxt + 1;>>
- ;
-
-/* rule enum_def */
-
-enum_def[char *fname]
- : <<int v= 0; int maxt=(-1); char *t;>> /* MR3 */
- "enum" ID
- "\{"
- ID
- <<t = mystrdup(LATEXT(1));>>
- ( "=" INT <<v=atoi(LATEXT(1));>>
- | <<v++;>>
- )
- <<
-/* fprintf(stderr, "#token %s=%d\n", t, v);*/
- TokenNum = v;
- if ( v>maxt ) maxt=v; /* MR3 */
- if ( Tnum( t ) == 0 ) addForcedTname( t, v );
- else {
- warnFL(eMsg1("redefinition of token %s; ignored",t),$fname,zzline);
- }
- >>
- ( ","
-
- /* MR2 Andreas Magnusson (Andreas.Magnusson@mailbox.swipnet.se) */
- /* MR2 Fix to bug introduced by 1.33MR1 for #tokdefs */
- /* MR2 Don't let #tokdefs be confused by */
- /* MR2 DLGminToken and DLGmaxToken */
-
- {
- <<isDLGmaxToken(LATEXT(1))>>? ID { "=" INT } /* MR2 */
- | ID /* MR2 */
- <<t = mystrdup(LATEXT(1));>>
- ( "=" INT <<v=atoi(LATEXT(1));>>
- | <<v++;>>
- )
- <<
-/* fprintf(stderr, "#token %s=%d\n", t, v);*/
- TokenNum = v;
- if ( v>maxt ) maxt=v; /* MR3 */
- if ( Tnum( t ) == 0 ) addForcedTname( t, v );
- else {
- warnFL(eMsg1("redefinition of token %s; ignored",t),$fname,zzline);
- }
- >>
- }
- )*
- "\}"
- ";"
- <<TokenNum = maxt + 1;>> /* MR3 */
- ;
-
-#token INT "[0-9]+"
-#token ID "[a-zA-Z_][_a-zA-Z0-9]*"
-
-#lexclass START
-
-/* MR14 Arpad Beszedes 26-May-98
- Add support for #line directives when antlr source is pre-processed
-*/
-
-#lexaction
-<<
-
-static char *
-#ifdef __USE_PROTOS
-getFileNameFromTheLineInfo(char *toStr, char *fromStr)
-#else
-getFileNameFromTheLineInfo(toStr, fromStr)
-char *toStr, *fromStr;
-#endif
-{
- int i, j, k;
-
- if (!fromStr || !toStr) return toStr;
-
- /* find the first " */
-
- for (i=0;
- (i<MaxFileName) &&
- (fromStr[i] != '\n') &&
- (fromStr[i] != '\r') &&
- (fromStr[i] != '\"');
- i++) /* nothing */ ;
-
- if ( (i == MaxFileName) ||
- (fromStr[i] == '\n') ||
- (fromStr[i] == '\r') ) {
- return toStr;
- }
-
- /* find the second " */
-
- for (j=i+1;
- (j<MaxFileName) &&
- (fromStr[j] != '\n') &&
- (fromStr[j] != '\r') &&
- (fromStr[j] != '\"');
- j++) /* nothing */ ;
-
- if ((j == MaxFileName) ||
- (fromStr[j] == '\n') ||
- (fromStr[j] == '\r') ) {
- return toStr;
- }
-
- /* go back until the last / or \ */
-
- for (k=j-1;
- (fromStr[k] != '\"') &&
- (fromStr[k] != '/') &&
- (fromStr[k] != '\\');
- k--) /* nothing */ ;
-
- /* copy the string after " / or \ into toStr */
-
- for (i=k+1; fromStr[i] != '\"'; i++) {
- toStr[i-k-1] = fromStr[i];
- }
-
- toStr[i-k-1] = '\0';
-
- return toStr;
-}
-
-/* MR14 end of a block to support #line in antlr source code */
-
->>
-
-<<
-
-/* MR2 Andreas Magnusson (Andreas.Magnusson@mailbox.swipnet.se) */
-/* MR2 Fix to bug introduced by 1.33MR1 for #tokdefs */
-/* MR2 Don't let #tokdefs be confused by */
-/* MR2 DLGminToken and DLGmaxToken */
-
-/* semantic check on DLGminToken and DLGmaxmaxToken in #tokdefs */
-
-#ifdef __USE_PROTOS
-static int isDLGmaxToken(char *Token)
-#else
-static int isDLGmaxToken(Token)
- char * Token;
-#endif
-{
- static char checkStr1[] = "DLGmaxToken";
- static char checkStr2[] = "DLGminToken";
-
- if (strcmp(Token, checkStr1) == 0)
- return 1;
- else if (strcmp(Token, checkStr2) == 0)
- return 1;
- else
- return 0;
-}
-
-/* semantics of #token */
-static void
-#ifdef __USE_PROTOS
-chkToken(char *t, char *e, char *a, int tnum)
-#else
-chkToken(t,e,a,tnum)
-char *t, *e, *a;
-int tnum;
-#endif
-{
- TermEntry *p;
-
- /* check to see that they don't try to redefine a token as a token class */
- if ( t!=NULL ) {
- p = (TermEntry *) hash_get(Tname, t);
- if ( p!=NULL && p->classname ) {
- err(eMsg1("redefinition of #tokclass '%s' to #token not allowed; ignored",t));
- if ( a!=NULL ) free((char *)a);
- return;
- }
- }
-
- if ( t==NULL && e==NULL ) { /* none found */
- err("#token requires at least token name or rexpr");
- }
- else if ( t!=NULL && e!=NULL ) { /* both found */
- if ( UserDefdTokens ) { /* if #tokdefs, must not define new */
- p = (TermEntry *) hash_get(Tname, t);
- if ( p == NULL) {
-err(eMsg1("new token definition '%s' not allowed - only #token with name already defined by #tokdefs file allowed",t));
- return;
- };
- }
- Tklink(t, e);
- if ( a!=NULL ) {
- if ( hasAction(e) ) {
- err(eMsg1("redefinition of action for %s; ignored",e));
- }
- else setHasAction(e, a);
- }
- }
- else if ( t!=NULL ) { /* only one found */
- if ( UserDefdTokens ) {
- p = (TermEntry *) hash_get(Tname, t);
- if (p == NULL) {
-err(eMsg1("new token definition '%s' not allowed - only #token with name already defined by #tokdefs file allowed",t));
- };
- return;
- }
- if ( Tnum( t ) == 0 ) addTname( t );
- else {
- err(eMsg1("redefinition of token %s; ignored",t));
- }
- if ( a!=NULL ) {
- err(eMsg1("action cannot be attached to a token name (%s); ignored",t));
- free((char *)a);
- }
- }
- else if ( e!=NULL ) {
- if ( Tnum( e ) == 0 ) addTexpr( e );
- else {
- if ( hasAction(e) ) {
- err(eMsg1("redefinition of action for expr %s; ignored",e));
- }
- else if ( a==NULL ) {
- err(eMsg1("redefinition of expr %s; ignored",e));
- }
- }
- if ( a!=NULL ) setHasAction(e, a);
- }
-
- /* if a token type number was specified, then add the token ID and 'tnum'
- * pair to the ForcedTokens list. (only applies if an id was given)
- */
- if ( t!=NULL && tnum>0 )
- {
- if ( set_el(tnum, reserved_positions) )
- {
- err(eMsgd("a token has already been forced to token number %d; ignored", tnum));
- }
- else
- {
- list_add(&ForcedTokens, newForcedToken(t,tnum));
- set_orel(tnum, &reserved_positions);
- }
- }
-}
->>
-
-<<
-static int
-#ifdef __USE_PROTOS
-match_token(char *s, char **nxt)
-#else
-match_token(s,nxt)
-char *s;
-char **nxt;
-#endif
-{
- if ( !(*s>='A' && *s<='Z') ) return 0;
- s++;
- while ( (*s>='a' && *s<='z') ||
- (*s>='A' && *s<='Z') ||
- (*s>='0' && *s<='9') ||
- *s=='_' )
- {
- s++;
- }
- if ( *s!=' ' && *s!='}' ) return 0;
- *nxt = s;
- return 1;
-}
-
-static int
-#ifdef __USE_PROTOS
-match_rexpr(char *s, char **nxt)
-#else
-match_rexpr(s,nxt)
-char *s;
-char **nxt;
-#endif
-{
- if ( *s!='"' ) return 0;
- s++;
- while ( *s!='"' )
- {
- if ( *s=='\n' || *s=='\r' ) /* MR13 */
- warn("eoln found in regular expression");
- if ( *s=='\\' ) s++;
- s++;
- }
- *nxt = s+1;
- return 1;
-}
-
-/*
- * Walk a string "{ A .. Z }" where A..Z is a space separated list
- * of token references (either labels or reg exprs). Return a
- * string "inlineX_set" for some unique integer X. Basically,
- * we pretend as if we had seen "#tokclass inlineX { A .. Z }"
- * on the input stream outside of an action.
- */
-char *
-#ifdef __USE_PROTOS
-inline_set(char *s)
-#else
-inline_set(s)
-char *s;
-#endif
-{
- char *nxt;
- fprintf(stderr, "found consumeUntil( {...} )\n");
- while ( *s==' ' || *s=='\t' || *s=='\n' || *s=='\r' ) {s++;}
- if ( *s!='{' )
- {
- err("malformed consumeUntil( {...} ); missing '{'");
- return "bad_set";
- }
- s++;
- while ( *s==' ' || *s=='\t' || *s=='\n' || *s=='\r' ) {s++;}
- while ( *s!='}' )
- {
- if ( match_token(s,&nxt) ) fprintf(stderr, "found token %s\n", s);
- else if ( match_rexpr(s,&nxt) ) fprintf(stderr, "found rexpr %s\n", s);
- else {
- err("invalid element in consumeUntil( {...} )");
- return "bad_set";
- }
- s = nxt;
- while ( *s==' ' || *s=='\t' || *s=='\n' || *s=='\r' ) {s++;}
- }
- return "inlineX_set";
-}
->>
-
-<<
-/* ANTLR-specific syntax error message generator
- * (define USER_ZZSYN when compiling so don't get 2 definitions)
- */
-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, ErrHdr, FileStr[CurFile]!=NULL?FileStr[CurFile]:"stdin", zzline);
- fprintf(stderr, " syntax error at \"%s\"", (tok==zzEOF_TOKEN)?"EOF":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) > (size_t)0 ) fprintf(stderr, " in %s", egroup);
- fprintf(stderr, "\n");
-}
->>
-
-#lexaction <<
-#ifdef __USE_PROTOS
-void mark_label_used_in_sem_pred(LabelEntry *le) /* MR10 */
-#else
-void mark_label_used_in_sem_pred(le) /* MR10 */
- LabelEntry *le;
-#endif
-{
- TokNode *tn;
- require (le->elem->ntype == nToken,"mark_label_used... ntype != nToken");
- tn=(TokNode *)le->elem;
- require (tn->label != 0,"mark_label_used... TokNode has no label");
- tn->label_used_in_semantic_pred=1;
-}
->>
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-19 06:14:02 +0000