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Diffstat (limited to 'contrib/perl5/perly.y')
| -rw-r--r-- | contrib/perl5/perly.y | 735 |
1 files changed, 0 insertions, 735 deletions
diff --git a/contrib/perl5/perly.y b/contrib/perl5/perly.y deleted file mode 100644 index f9c5c5f..0000000 --- a/contrib/perl5/perly.y +++ /dev/null @@ -1,735 +0,0 @@ -/* perly.y - * - * Copyright (c) 1991-2001, Larry Wall - * - * You may distribute under the terms of either the GNU General Public - * License or the Artistic License, as specified in the README file. - * - */ - -/* - * 'I see,' laughed Strider. 'I look foul and feel fair. Is that it? - * All that is gold does not glitter, not all those who wander are lost.' - */ - -%{ -#include "EXTERN.h" -#define PERL_IN_PERLY_C -#include "perl.h" - -#define dep() deprecate("\"do\" to call subroutines") - -/* stuff included here to make perly_c.diff apply better */ - -#define yydebug PL_yydebug -#define yynerrs PL_yynerrs -#define yyerrflag PL_yyerrflag -#define yychar PL_yychar -#define yyval PL_yyval -#define yylval PL_yylval - -struct ysv { - short* yyss; - YYSTYPE* yyvs; - int oldyydebug; - int oldyynerrs; - int oldyyerrflag; - int oldyychar; - YYSTYPE oldyyval; - YYSTYPE oldyylval; -}; - -static void yydestruct(pTHXo_ void *ptr); - -%} - -%start prog - -%{ -#if 0 /* get this from perly.h instead */ -%} - -%union { - I32 ival; - char *pval; - OP *opval; - GV *gvval; -} - -%{ -#endif /* 0 */ - -#ifdef USE_PURE_BISON -#define YYLEX_PARAM (&yychar) -#define yylex yylex_r -#endif - -%} - -%token <ival> '{' - -%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF -%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB -%token <pval> LABEL -%token <ival> FORMAT SUB ANONSUB PACKAGE USE -%token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR -%token <ival> LOOPEX DOTDOT -%token <ival> FUNC0 FUNC1 FUNC UNIOP LSTOP -%token <ival> RELOP EQOP MULOP ADDOP -%token <ival> DOLSHARP DO HASHBRACK NOAMP -%token <ival> LOCAL MY MYSUB -%token COLONATTR - -%type <ival> prog decl format startsub startanonsub startformsub -%type <ival> remember mremember '&' -%type <opval> block mblock lineseq line loop cond else -%type <opval> expr term subscripted scalar ary hsh arylen star amper sideff -%type <opval> argexpr nexpr texpr iexpr mexpr mnexpr mtexpr miexpr -%type <opval> listexpr listexprcom indirob listop method -%type <opval> formname subname proto subbody cont my_scalar -%type <opval> subattrlist myattrlist mysubrout myattrterm myterm -%type <pval> label - -%nonassoc PREC_LOW -%nonassoc LOOPEX - -%left <ival> OROP -%left ANDOP -%right NOTOP -%nonassoc LSTOP LSTOPSUB -%left ',' -%right <ival> ASSIGNOP -%right '?' ':' -%nonassoc DOTDOT -%left OROR -%left ANDAND -%left <ival> BITOROP -%left <ival> BITANDOP -%nonassoc EQOP -%nonassoc RELOP -%nonassoc UNIOP UNIOPSUB -%left <ival> SHIFTOP -%left ADDOP -%left MULOP -%left <ival> MATCHOP -%right '!' '~' UMINUS REFGEN -%right <ival> POWOP -%nonassoc PREINC PREDEC POSTINC POSTDEC -%left ARROW -%nonassoc <ival> ')' -%left '(' -%left '[' '{' - -%% /* RULES */ - -prog : /* NULL */ - { -#if defined(YYDEBUG) && defined(DEBUGGING) - yydebug = (PL_debug & 1); -#endif - PL_expect = XSTATE; - } - /*CONTINUED*/ lineseq - { newPROG($2); } - ; - -block : '{' remember lineseq '}' - { if (PL_copline > (line_t)$1) - PL_copline = $1; - $$ = block_end($2, $3); } - ; - -remember: /* NULL */ /* start a full lexical scope */ - { $$ = block_start(TRUE); } - ; - -mblock : '{' mremember lineseq '}' - { if (PL_copline > (line_t)$1) - PL_copline = $1; - $$ = block_end($2, $3); } - ; - -mremember: /* NULL */ /* start a partial lexical scope */ - { $$ = block_start(FALSE); } - ; - -lineseq : /* NULL */ - { $$ = Nullop; } - | lineseq decl - { $$ = $1; } - | lineseq line - { $$ = append_list(OP_LINESEQ, - (LISTOP*)$1, (LISTOP*)$2); - PL_pad_reset_pending = TRUE; - if ($1 && $2) PL_hints |= HINT_BLOCK_SCOPE; } - ; - -line : label cond - { $$ = newSTATEOP(0, $1, $2); } - | loop /* loops add their own labels */ - | label ';' - { if ($1 != Nullch) { - $$ = newSTATEOP(0, $1, newOP(OP_NULL, 0)); - } - else { - $$ = Nullop; - PL_copline = NOLINE; - } - PL_expect = XSTATE; } - | label sideff ';' - { $$ = newSTATEOP(0, $1, $2); - PL_expect = XSTATE; } - ; - -sideff : error - { $$ = Nullop; } - | expr - { $$ = $1; } - | expr IF expr - { $$ = newLOGOP(OP_AND, 0, $3, $1); } - | expr UNLESS expr - { $$ = newLOGOP(OP_OR, 0, $3, $1); } - | expr WHILE expr - { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); } - | expr UNTIL iexpr - { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);} - | expr FOR expr - { $$ = newFOROP(0, Nullch, $2, - Nullop, $3, $1, Nullop); } - ; - -else : /* NULL */ - { $$ = Nullop; } - | ELSE mblock - { ($2)->op_flags |= OPf_PARENS; $$ = scope($2); } - | ELSIF '(' mexpr ')' mblock else - { PL_copline = $1; - $$ = newCONDOP(0, $3, scope($5), $6); - PL_hints |= HINT_BLOCK_SCOPE; } - ; - -cond : IF '(' remember mexpr ')' mblock else - { PL_copline = $1; - $$ = block_end($3, - newCONDOP(0, $4, scope($6), $7)); } - | UNLESS '(' remember miexpr ')' mblock else - { PL_copline = $1; - $$ = block_end($3, - newCONDOP(0, $4, scope($6), $7)); } - ; - -cont : /* NULL */ - { $$ = Nullop; } - | CONTINUE block - { $$ = scope($2); } - ; - -loop : label WHILE '(' remember mtexpr ')' mblock cont - { PL_copline = $2; - $$ = block_end($4, - newSTATEOP(0, $1, - newWHILEOP(0, 1, (LOOP*)Nullop, - $2, $5, $7, $8))); } - | label UNTIL '(' remember miexpr ')' mblock cont - { PL_copline = $2; - $$ = block_end($4, - newSTATEOP(0, $1, - newWHILEOP(0, 1, (LOOP*)Nullop, - $2, $5, $7, $8))); } - | label FOR MY remember my_scalar '(' mexpr ')' mblock cont - { $$ = block_end($4, - newFOROP(0, $1, $2, $5, $7, $9, $10)); } - | label FOR scalar '(' remember mexpr ')' mblock cont - { $$ = block_end($5, - newFOROP(0, $1, $2, mod($3, OP_ENTERLOOP), - $6, $8, $9)); } - | label FOR '(' remember mexpr ')' mblock cont - { $$ = block_end($4, - newFOROP(0, $1, $2, Nullop, $5, $7, $8)); } - | label FOR '(' remember mnexpr ';' mtexpr ';' mnexpr ')' mblock - /* basically fake up an initialize-while lineseq */ - { OP *forop = append_elem(OP_LINESEQ, - scalar($5), - newWHILEOP(0, 1, (LOOP*)Nullop, - $2, scalar($7), - $11, scalar($9))); - PL_copline = $2; - $$ = block_end($4, newSTATEOP(0, $1, forop)); } - | label block cont /* a block is a loop that happens once */ - { $$ = newSTATEOP(0, $1, - newWHILEOP(0, 1, (LOOP*)Nullop, - NOLINE, Nullop, $2, $3)); } - ; - -nexpr : /* NULL */ - { $$ = Nullop; } - | sideff - ; - -texpr : /* NULL means true */ - { (void)scan_num("1", &yylval); $$ = yylval.opval; } - | expr - ; - -iexpr : expr - { $$ = invert(scalar($1)); } - ; - -mexpr : expr - { $$ = $1; intro_my(); } - ; - -mnexpr : nexpr - { $$ = $1; intro_my(); } - ; - -mtexpr : texpr - { $$ = $1; intro_my(); } - ; - -miexpr : iexpr - { $$ = $1; intro_my(); } - ; - -label : /* empty */ - { $$ = Nullch; } - | LABEL - ; - -decl : format - { $$ = 0; } - | subrout - { $$ = 0; } - | mysubrout - { $$ = 0; } - | package - { $$ = 0; } - | use - { $$ = 0; } - ; - -format : FORMAT startformsub formname block - { newFORM($2, $3, $4); } - ; - -formname: WORD { $$ = $1; } - | /* NULL */ { $$ = Nullop; } - ; - -mysubrout: MYSUB startsub subname proto subattrlist subbody - { newMYSUB($2, $3, $4, $5, $6); } - ; - -subrout : SUB startsub subname proto subattrlist subbody - { newATTRSUB($2, $3, $4, $5, $6); } - ; - -startsub: /* NULL */ /* start a regular subroutine scope */ - { $$ = start_subparse(FALSE, 0); } - ; - -startanonsub: /* NULL */ /* start an anonymous subroutine scope */ - { $$ = start_subparse(FALSE, CVf_ANON); } - ; - -startformsub: /* NULL */ /* start a format subroutine scope */ - { $$ = start_subparse(TRUE, 0); } - ; - -subname : WORD { STRLEN n_a; char *name = SvPV(((SVOP*)$1)->op_sv,n_a); - if (strEQ(name, "BEGIN") || strEQ(name, "END") - || strEQ(name, "INIT") || strEQ(name, "CHECK")) - CvSPECIAL_on(PL_compcv); - $$ = $1; } - ; - -proto : /* NULL */ - { $$ = Nullop; } - | THING - ; - -subattrlist: /* NULL */ - { $$ = Nullop; } - | COLONATTR THING - { $$ = $2; } - | COLONATTR - { $$ = Nullop; } - ; - -myattrlist: COLONATTR THING - { $$ = $2; } - | COLONATTR - { $$ = Nullop; } - ; - -subbody : block { $$ = $1; } - | ';' { $$ = Nullop; PL_expect = XSTATE; } - ; - -package : PACKAGE WORD ';' - { package($2); } - | PACKAGE ';' - { package(Nullop); } - ; - -use : USE startsub - { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ } - WORD WORD listexpr ';' - { utilize($1, $2, $4, $5, $6); } - ; - -expr : expr ANDOP expr - { $$ = newLOGOP(OP_AND, 0, $1, $3); } - | expr OROP expr - { $$ = newLOGOP($2, 0, $1, $3); } - | argexpr %prec PREC_LOW - ; - -argexpr : argexpr ',' - { $$ = $1; } - | argexpr ',' term - { $$ = append_elem(OP_LIST, $1, $3); } - | term %prec PREC_LOW - ; - -listop : LSTOP indirob argexpr - { $$ = convert($1, OPf_STACKED, - prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); } - | FUNC '(' indirob expr ')' - { $$ = convert($1, OPf_STACKED, - prepend_elem(OP_LIST, newGVREF($1,$3), $4) ); } - | term ARROW method '(' listexprcom ')' - { $$ = convert(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, - prepend_elem(OP_LIST, scalar($1), $5), - newUNOP(OP_METHOD, 0, $3))); } - | term ARROW method - { $$ = convert(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, scalar($1), - newUNOP(OP_METHOD, 0, $3))); } - | METHOD indirob listexpr - { $$ = convert(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, - prepend_elem(OP_LIST, $2, $3), - newUNOP(OP_METHOD, 0, $1))); } - | FUNCMETH indirob '(' listexprcom ')' - { $$ = convert(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, - prepend_elem(OP_LIST, $2, $4), - newUNOP(OP_METHOD, 0, $1))); } - | LSTOP listexpr - { $$ = convert($1, 0, $2); } - | FUNC '(' listexprcom ')' - { $$ = convert($1, 0, $3); } - | LSTOPSUB startanonsub block - { $3 = newANONATTRSUB($2, 0, Nullop, $3); } - listexpr %prec LSTOP - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, - prepend_elem(OP_LIST, $3, $5), $1)); } - ; - -method : METHOD - | scalar - ; - -subscripted: star '{' expr ';' '}' - { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); } - | scalar '[' expr ']' - { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); } - | term ARROW '[' expr ']' - { $$ = newBINOP(OP_AELEM, 0, - ref(newAVREF($1),OP_RV2AV), - scalar($4));} - | subscripted '[' expr ']' - { $$ = newBINOP(OP_AELEM, 0, - ref(newAVREF($1),OP_RV2AV), - scalar($3));} - | scalar '{' expr ';' '}' - { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3)); - PL_expect = XOPERATOR; } - | term ARROW '{' expr ';' '}' - { $$ = newBINOP(OP_HELEM, 0, - ref(newHVREF($1),OP_RV2HV), - jmaybe($4)); - PL_expect = XOPERATOR; } - | subscripted '{' expr ';' '}' - { $$ = newBINOP(OP_HELEM, 0, - ref(newHVREF($1),OP_RV2HV), - jmaybe($3)); - PL_expect = XOPERATOR; } - | term ARROW '(' ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - newCVREF(0, scalar($1))); } - | term ARROW '(' expr ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, $4, - newCVREF(0, scalar($1)))); } - - | subscripted '(' expr ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, $3, - newCVREF(0, scalar($1)))); } - | subscripted '(' ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - newCVREF(0, scalar($1))); } - - - -term : term ASSIGNOP term - { $$ = newASSIGNOP(OPf_STACKED, $1, $2, $3); } - | term POWOP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term MULOP term - { if ($2 != OP_REPEAT) - scalar($1); - $$ = newBINOP($2, 0, $1, scalar($3)); } - | term ADDOP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term SHIFTOP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term RELOP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term EQOP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term BITANDOP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term BITOROP term - { $$ = newBINOP($2, 0, scalar($1), scalar($3)); } - | term DOTDOT term - { $$ = newRANGE($2, scalar($1), scalar($3));} - | term ANDAND term - { $$ = newLOGOP(OP_AND, 0, $1, $3); } - | term OROR term - { $$ = newLOGOP(OP_OR, 0, $1, $3); } - | term '?' term ':' term - { $$ = newCONDOP(0, $1, $3, $5); } - | term MATCHOP term - { $$ = bind_match($2, $1, $3); } - - | '-' term %prec UMINUS - { $$ = newUNOP(OP_NEGATE, 0, scalar($2)); } - | '+' term %prec UMINUS - { $$ = $2; } - | '!' term - { $$ = newUNOP(OP_NOT, 0, scalar($2)); } - | '~' term - { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));} - | REFGEN term - { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); } - | term POSTINC - { $$ = newUNOP(OP_POSTINC, 0, - mod(scalar($1), OP_POSTINC)); } - | term POSTDEC - { $$ = newUNOP(OP_POSTDEC, 0, - mod(scalar($1), OP_POSTDEC)); } - | PREINC term - { $$ = newUNOP(OP_PREINC, 0, - mod(scalar($2), OP_PREINC)); } - | PREDEC term - { $$ = newUNOP(OP_PREDEC, 0, - mod(scalar($2), OP_PREDEC)); } - | myattrterm %prec UNIOP - { $$ = $1; } - | LOCAL term %prec UNIOP - { $$ = localize($2,$1); } - | '(' expr ')' - { $$ = sawparens($2); } - | '(' ')' - { $$ = sawparens(newNULLLIST()); } - | '[' expr ']' - { $$ = newANONLIST($2); } - | '[' ']' - { $$ = newANONLIST(Nullop); } - | HASHBRACK expr ';' '}' %prec '(' - { $$ = newANONHASH($2); } - | HASHBRACK ';' '}' %prec '(' - { $$ = newANONHASH(Nullop); } - | ANONSUB startanonsub proto subattrlist block %prec '(' - { $$ = newANONATTRSUB($2, $3, $4, $5); } - | scalar %prec '(' - { $$ = $1; } - | star %prec '(' - { $$ = $1; } - | hsh %prec '(' - { $$ = $1; } - | ary %prec '(' - { $$ = $1; } - | arylen %prec '(' - { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));} - | subscripted - { $$ = $1; } - | '(' expr ')' '[' expr ']' - { $$ = newSLICEOP(0, $5, $2); } - | '(' ')' '[' expr ']' - { $$ = newSLICEOP(0, $4, Nullop); } - | ary '[' expr ']' - { $$ = prepend_elem(OP_ASLICE, - newOP(OP_PUSHMARK, 0), - newLISTOP(OP_ASLICE, 0, - list($3), - ref($1, OP_ASLICE))); } - | ary '{' expr ';' '}' - { $$ = prepend_elem(OP_HSLICE, - newOP(OP_PUSHMARK, 0), - newLISTOP(OP_HSLICE, 0, - list($3), - ref(oopsHV($1), OP_HSLICE))); - PL_expect = XOPERATOR; } - | THING %prec '(' - { $$ = $1; } - | amper - { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); } - | amper '(' ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); } - | amper '(' expr ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, $3, scalar($1))); } - | NOAMP WORD listexpr - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, $3, scalar($2))); } - | DO term %prec UNIOP - { $$ = dofile($2); } - | DO block %prec '(' - { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); } - | DO WORD '(' ')' - { $$ = newUNOP(OP_ENTERSUB, - OPf_SPECIAL|OPf_STACKED, - prepend_elem(OP_LIST, - scalar(newCVREF( - (OPpENTERSUB_AMPER<<8), - scalar($2) - )),Nullop)); dep();} - | DO WORD '(' expr ')' - { $$ = newUNOP(OP_ENTERSUB, - OPf_SPECIAL|OPf_STACKED, - append_elem(OP_LIST, - $4, - scalar(newCVREF( - (OPpENTERSUB_AMPER<<8), - scalar($2) - )))); dep();} - | DO scalar '(' ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, - prepend_elem(OP_LIST, - scalar(newCVREF(0,scalar($2))), Nullop)); dep();} - | DO scalar '(' expr ')' - { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED, - prepend_elem(OP_LIST, - $4, - scalar(newCVREF(0,scalar($2))))); dep();} - | LOOPEX - { $$ = newOP($1, OPf_SPECIAL); - PL_hints |= HINT_BLOCK_SCOPE; } - | LOOPEX term - { $$ = newLOOPEX($1,$2); } - | NOTOP argexpr - { $$ = newUNOP(OP_NOT, 0, scalar($2)); } - | UNIOP - { $$ = newOP($1, 0); } - | UNIOP block - { $$ = newUNOP($1, 0, $2); } - | UNIOP term - { $$ = newUNOP($1, 0, $2); } - | UNIOPSUB term - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - append_elem(OP_LIST, $2, scalar($1))); } - | FUNC0 - { $$ = newOP($1, 0); } - | FUNC0 '(' ')' - { $$ = newOP($1, 0); } - | FUNC0SUB - { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, - scalar($1)); } - | FUNC1 '(' ')' - { $$ = newOP($1, OPf_SPECIAL); } - | FUNC1 '(' expr ')' - { $$ = newUNOP($1, 0, $3); } - | PMFUNC '(' term ')' - { $$ = pmruntime($1, $3, Nullop); } - | PMFUNC '(' term ',' term ')' - { $$ = pmruntime($1, $3, $5); } - | WORD - | listop - ; - -myattrterm: MY myterm myattrlist - { $$ = my_attrs($2,$3); } - | MY myterm - { $$ = localize($2,$1); } - ; - -myterm : '(' expr ')' - { $$ = sawparens($2); } - | '(' ')' - { $$ = sawparens(newNULLLIST()); } - | scalar %prec '(' - { $$ = $1; } - | hsh %prec '(' - { $$ = $1; } - | ary %prec '(' - { $$ = $1; } - ; - -listexpr: /* NULL */ %prec PREC_LOW - { $$ = Nullop; } - | argexpr %prec PREC_LOW - { $$ = $1; } - ; - -listexprcom: /* NULL */ - { $$ = Nullop; } - | expr - { $$ = $1; } - | expr ',' - { $$ = $1; } - ; - -my_scalar: scalar - { PL_in_my = 0; $$ = my($1); } - ; - -amper : '&' indirob - { $$ = newCVREF($1,$2); } - ; - -scalar : '$' indirob - { $$ = newSVREF($2); } - ; - -ary : '@' indirob - { $$ = newAVREF($2); } - ; - -hsh : '%' indirob - { $$ = newHVREF($2); } - ; - -arylen : DOLSHARP indirob - { $$ = newAVREF($2); } - ; - -star : '*' indirob - { $$ = newGVREF(0,$2); } - ; - -indirob : WORD - { $$ = scalar($1); } - | scalar %prec PREC_LOW - { $$ = scalar($1); } - | block - { $$ = scope($1); } - - | PRIVATEREF - { $$ = $1; } - ; - -%% /* PROGRAM */ - -/* more stuff added to make perly_c.diff easier to apply */ - -#ifdef yyparse -#undef yyparse -#endif -#define yyparse() Perl_yyparse(pTHX) - |
