-/* $RCSfile: perly.y,v $$Revision: 4.1 $$Date: 92/08/07 18:26:16 $
+/* perly.y
*
- * Copyright (c) 1991, Larry Wall
+ * Copyright (c) 1991-1997, 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.
*
- * $Log: perly.y,v $
- * Revision 4.1 92/08/07 18:26:16 lwall
- *
- * Revision 4.0.1.5 92/06/11 21:12:50 lwall
- * patch34: expectterm incorrectly set to indicate start of program or block
- *
- * Revision 4.0.1.4 92/06/08 17:33:25 lwall
- * patch20: one of the backdoors to expectterm was on the wrong reduction
- *
- * Revision 4.0.1.3 92/06/08 15:18:16 lwall
- * patch20: an expression may now start with a bareword
- * patch20: relaxed requirement for semicolon at the end of a block
- * patch20: added ... as variant on ..
- * patch20: fixed double debug break in foreach with implicit array assignment
- * patch20: if {block} {block} didn't work any more
- * patch20: deleted some minor memory leaks
- *
- * Revision 4.0.1.2 91/11/05 18:17:38 lwall
- * patch11: extra comma at end of list is now allowed in more places (Hi, Felix!)
- * patch11: once-thru blocks didn't display right in the debugger
- * patch11: debugger got confused over nested subroutine definitions
- *
- * Revision 4.0.1.1 91/06/07 11:42:34 lwall
- * patch4: new copyright notice
- *
- * Revision 4.0 91/03/20 01:38:40 lwall
- * 4.0 baseline.
- *
+ */
+
+/*
+ * '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"
-/*SUPPRESS 530*/
-/*SUPPRESS 593*/
-/*SUPPRESS 595*/
+#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(void *ptr);
+
+static void
+yydestruct(void *ptr)
+{
+ struct ysv* ysave = (struct ysv*)ptr;
+ if (ysave->yyss) Safefree(ysave->yyss);
+ if (ysave->yyvs) Safefree(ysave->yyvs);
+ yydebug = ysave->oldyydebug;
+ yynerrs = ysave->oldyynerrs;
+ yyerrflag = ysave->oldyyerrflag;
+ yychar = ysave->oldyychar;
+ yyval = ysave->oldyyval;
+ yylval = ysave->oldyylval;
+ Safefree(ysave);
+}
%}
%start prog
+%{
+#if 0 /* get this from perly.h instead */
+%}
+
%union {
I32 ival;
char *pval;
GV *gvval;
}
-%token <ival> '{' ')'
+%{
+#endif /* 0 */
+
+#ifdef USE_PURE_BISON
+#define YYLEX_PARAM (&yychar)
+#endif
+
+%}
+
+%token <ival> '{'
-%token <opval> WORD METHOD THING PMFUNC
+%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF
+%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
%token <pval> LABEL
-%token <ival> FORMAT SUB PACKAGE
+%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
+%token <ival> FUNC0 FUNC1 FUNC UNIOP LSTOP
%token <ival> RELOP EQOP MULOP ADDOP
-%token <ival> DOLSHARP DO LOCAL DELETE HASHBRACK
-
-%type <ival> prog decl format remember crp crb crhb
-%type <opval> block lineseq line loop cond nexpr else
-%type <opval> expr sexpr term scalar ary hsh arylen star amper sideff
-%type <opval> listexpr indirob
-%type <opval> texpr listop
+%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
-%type <opval> cont
-%nonassoc <ival> LSTOP
+%nonassoc PREC_LOW
+%nonassoc LOOPEX
+
+%left <ival> OROP
+%left ANDOP
+%right NOTOP
+%nonassoc LSTOP LSTOPSUB
%left ','
-%right '='
+%right <ival> ASSIGNOP
%right '?' ':'
%nonassoc DOTDOT
%left OROR
%left <ival> BITANDOP
%nonassoc EQOP
%nonassoc RELOP
-%nonassoc <ival> UNIOP
+%nonassoc UNIOP UNIOPSUB
%left <ival> SHIFTOP
%left ADDOP
%left MULOP
-%left <ival> MATCHOP ARROW
+%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 = (debug & 1);
+ yydebug = (PL_debug & 1);
#endif
- expect = XBLOCK;
+ PL_expect = XSTATE;
}
/*CONTINUED*/ lineseq
- { if (in_eval) {
- eval_root = newUNOP(OP_LEAVEEVAL, 0, $2);
- eval_start = linklist(eval_root);
- eval_root->op_next = 0;
- peep(eval_start);
- }
- else
- main_root = block_head(scalar($2), &main_start);
- }
+ { newPROG($2); }
;
block : '{' remember lineseq '}'
- { $$ = scalarseq($3);
- if (copline > (line_t)$1)
- copline = $1;
- if (savestack_ix > $2)
- leave_scope($2);
- expect = XBLOCK; }
+ { if (PL_copline > (line_t)$1)
+ PL_copline = $1;
+ $$ = block_end($2, $3); }
;
-remember: /* NULL */ /* in case they push a package name */
- { $$ = savestack_ix; }
+remember: /* NULL */ /* start a full lexical scope */
+ { $$ = 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 */
| lineseq decl
{ $$ = $1; }
| lineseq line
- { $$ = append_list(OP_LINESEQ, $1, $2); pad_reset(); }
+ { $$ = append_list(OP_LINESEQ,
+ (LISTOP*)$1, (LISTOP*)$2);
+ PL_pad_reset_pending = TRUE;
+ if ($1 && $2) PL_hints |= HINT_BLOCK_SCOPE; }
;
line : label cond
}
else {
$$ = Nullop;
- copline = NOLINE;
+ PL_copline = NOLINE;
}
- expect = XBLOCK; }
+ PL_expect = XSTATE; }
| label sideff ';'
{ $$ = newSTATEOP(0, $1, $2);
- expect = XBLOCK; }
+ PL_expect = XSTATE; }
;
sideff : error
| expr UNLESS expr
{ $$ = newLOGOP(OP_OR, 0, $3, $1); }
| expr WHILE expr
- { $$ = newLOOPOP(0, 1, scalar($3), $1, Nullop); }
- | expr UNTIL expr
- { $$ = newLOOPOP(0, 1, invert(scalar($3)), $1, Nullop);}
+ { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); }
+ | expr UNTIL iexpr
+ { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);}
+ | expr FOR expr
+ { $$ = newFOROP(0, Nullch, $2,
+ Nullop, $3, $1, Nullop); }
;
else : /* NULL */
{ $$ = Nullop; }
- | ELSE block
- { $$ = scope($2); }
- | ELSIF '(' expr ')' block else
- { copline = $1;
- $$ = newCONDOP(0, $3, scope($5), $6); }
- ;
-
-cond : IF '(' expr ')' block else
- { copline = $1;
- $$ = newCONDOP(0, $3, scope($5), $6); }
- | UNLESS '(' expr ')' block else
- { copline = $1;
- $$ = newCONDOP(0,
- invert(scalar($3)), scope($5), $6); }
- | IF block block else
- { copline = $1;
- $$ = newCONDOP(0, scope($2), scope($3), $4); }
- | UNLESS block block else
- { copline = $1;
- $$ = newCONDOP(0, invert(scalar(scope($2))),
- scope($3), $4); }
+ | 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 */
{ $$ = scope($2); }
;
-loop : label WHILE '(' texpr ')' block cont
- { copline = $2;
- $$ = newSTATEOP(0, $1,
- newWHILEOP(0, 1, Nullop, $4, $6, $7) ); }
- | label UNTIL '(' expr ')' block cont
- { copline = $2;
- $$ = newSTATEOP(0, $1,
- newWHILEOP(0, 1, Nullop,
- invert(scalar($4)), $6, $7) ); }
- | label WHILE block block cont
- { copline = $2;
- $$ = newSTATEOP(0, $1,
- newWHILEOP(0, 1, Nullop,
- scope($3), $4, $5) ); }
- | label UNTIL block block cont
- { copline = $2;
- $$ = newSTATEOP(0, $1,
- newWHILEOP(0, 1, Nullop,
- invert(scalar(scope($3))), $4, $5)); }
- | label FOR scalar '(' expr crp block cont
- { $$ = newFOROP(0, $1, $2, ref($3, OP_ENTERLOOP),
- $5, $7, $8); }
- | label FOR '(' expr crp block cont
- { $$ = newFOROP(0, $1, $2, Nullop, $4, $6, $7); }
- | label FOR '(' nexpr ';' texpr ';' nexpr ')' block
+loop : label WHILE '(' remember mtexpr ')' mblock cont
+ { PL_copline = $2;
+ $$ = 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 */
- { copline = $2;
- $$ = append_elem(OP_LINESEQ,
- newSTATEOP(0, $1, scalar($4)),
- newSTATEOP(0, $1,
- newWHILEOP(0, 1, Nullop,
- scalar($6), $10, scalar($8)) )); }
+ { OP *forop = append_elem(OP_LINESEQ,
+ scalar($5),
+ newWHILEOP(0, 1, (LOOP*)Nullop,
+ $2, scalar($7),
+ $11, scalar($9)));
+ PL_copline = $2;
+ $$ = block_end($4, newSTATEOP(0, $1, forop)); }
| label block cont /* a block is a loop that happens once */
- { $$ = newSTATEOP(0,
- $1, newWHILEOP(0, 1, Nullop, Nullop, $2, $3)); }
+ { $$ = newSTATEOP(0, $1,
+ newWHILEOP(0, 1, (LOOP*)Nullop,
+ NOLINE, Nullop, $2, $3)); }
;
nexpr : /* NULL */
| 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
{ $$ = 0; }
| subrout
{ $$ = 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 */
+ { $$ = start_subparse(FALSE, CVf_ANON); }
;
-format : FORMAT WORD block
- { newFORM($1, $2, $3); }
- | FORMAT block
- { newFORM($1, Nullop, $2); }
+startformsub: /* NULL */ /* start a format subroutine scope */
+ { $$ = start_subparse(TRUE, 0); }
;
-subrout : SUB WORD block
- { newSUB($1, $2, $3); }
+subname : WORD { STRLEN n_a; char *name = SvPV(((SVOP*)$1)->op_sv,n_a);
+ if (strEQ(name, "BEGIN") || strEQ(name, "END")
+ || strEQ(name, "INIT"))
+ 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; }
+ | ';' { $$ = Nullop; PL_expect = XSTATE; }
;
package : PACKAGE WORD ';'
{ package($2); }
+ | PACKAGE ';'
+ { package(Nullop); }
+ ;
+
+use : USE startsub
+ { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
+ WORD WORD listexpr ';'
+ { utilize($1, $2, $4, $5, $6); }
;
-expr : expr ',' sexpr
+expr : expr ANDOP expr
+ { $$ = newLOGOP(OP_AND, 0, $1, $3); }
+ | expr OROP expr
+ { $$ = newLOGOP($2, 0, $1, $3); }
+ | argexpr %prec PREC_LOW
+ ;
+
+argexpr : argexpr ','
+ { $$ = $1; }
+ | argexpr ',' term
{ $$ = append_elem(OP_LIST, $1, $3); }
- | sexpr
+ | term %prec PREC_LOW
;
-listop : LSTOP indirob listexpr
+listop : LSTOP indirob argexpr
{ $$ = convert($1, OPf_STACKED,
- prepend_elem(OP_LIST, newGVREF($2), $3) ); }
- | FUNC '(' indirob listexpr ')'
+ prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); }
+ | FUNC '(' indirob expr ')'
{ $$ = convert($1, OPf_STACKED,
- prepend_elem(OP_LIST, newGVREF($3), $4) ); }
- | indirob ARROW LSTOP listexpr
- { $$ = convert($3, OPf_STACKED,
- prepend_elem(OP_LIST, newGVREF($1), $4) ); }
- | indirob ARROW FUNC '(' listexpr ')'
- { $$ = convert($3, OPf_STACKED,
- prepend_elem(OP_LIST, newGVREF($1), $5) ); }
- | term ARROW METHOD '(' listexpr ')'
- { $$ = convert(OP_ENTERSUBR, OPf_STACKED|OPf_SPECIAL,
- prepend_elem(OP_LIST, newMETHOD($1,$3), $5)); }
+ 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
- { $$ = convert(OP_ENTERSUBR, OPf_STACKED|OPf_SPECIAL,
- prepend_elem(OP_LIST, newMETHOD($2,$1), $3)); }
+ { $$ = 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 '(' listexpr ')'
+ | 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)); }
;
-sexpr : sexpr '=' sexpr
- { $$ = newASSIGNOP(OPf_STACKED, $1, $3); }
- | sexpr POWOP '=' sexpr
- { $$ = newBINOP($2, OPf_STACKED,
- ref(scalar($1), $2), scalar($4)); }
- | sexpr MULOP '=' sexpr
- { $$ = newBINOP($2, OPf_STACKED,
- ref(scalar($1), $2), scalar($4)); }
- | sexpr ADDOP '=' sexpr
- { $$ = newBINOP($2, OPf_STACKED,
- ref(scalar($1), $2), scalar($4));}
- | sexpr SHIFTOP '=' sexpr
- { $$ = newBINOP($2, OPf_STACKED,
- ref(scalar($1), $2), scalar($4)); }
- | sexpr BITANDOP '=' sexpr
- { $$ = newBINOP($2, OPf_STACKED,
- ref(scalar($1), $2), scalar($4)); }
- | sexpr BITOROP '=' sexpr
- { $$ = newBINOP($2, OPf_STACKED,
- ref(scalar($1), $2), scalar($4)); }
- | sexpr ANDAND '=' sexpr
- { $$ = newLOGOP(OP_ANDASSIGN, 0,
- ref(scalar($1), OP_ANDASSIGN),
- newUNOP(OP_SASSIGN, 0, scalar($4))); }
- | sexpr OROR '=' sexpr
- { $$ = newLOGOP(OP_ORASSIGN, 0,
- ref(scalar($1), OP_ORASSIGN),
- newUNOP(OP_SASSIGN, 0, scalar($4))); }
-
-
- | sexpr POWOP sexpr
+method : METHOD
+ | scalar
+ ;
+
+subscripted: star '{' expr ';' '}'
+ { $$ = 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)); }
- | sexpr MULOP sexpr
+ | term MULOP term
{ if ($2 != OP_REPEAT)
scalar($1);
$$ = newBINOP($2, 0, $1, scalar($3)); }
- | sexpr ADDOP sexpr
+ | term ADDOP term
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
- | sexpr SHIFTOP sexpr
+ | term SHIFTOP term
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
- | sexpr RELOP sexpr
+ | term RELOP term
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
- | sexpr EQOP sexpr
+ | term EQOP term
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
- | sexpr BITANDOP sexpr
+ | term BITANDOP term
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
- | sexpr BITOROP sexpr
+ | term BITOROP term
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
- | sexpr DOTDOT sexpr
+ | term DOTDOT term
{ $$ = newRANGE($2, scalar($1), scalar($3));}
- | sexpr ANDAND sexpr
+ | term ANDAND term
{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
- | sexpr OROR sexpr
+ | term OROR term
{ $$ = newLOGOP(OP_OR, 0, $1, $3); }
- | sexpr '?' sexpr ':' sexpr
+ | term '?' term ':' term
{ $$ = newCONDOP(0, $1, $3, $5); }
- | sexpr MATCHOP sexpr
+ | term MATCHOP term
{ $$ = bind_match($2, $1, $3); }
- | term
- { $$ = $1; }
- ;
-term : '-' term %prec UMINUS
+ | '-' term %prec UMINUS
{ $$ = newUNOP(OP_NEGATE, 0, scalar($2)); }
| '+' term %prec UMINUS
{ $$ = $2; }
| '~' term
{ $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));}
| REFGEN term
- { $$ = newUNOP(OP_REFGEN, 0, ref($2, OP_REFGEN)); }
+ { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); }
| term POSTINC
{ $$ = newUNOP(OP_POSTINC, 0,
- ref(scalar($1), OP_POSTINC)); }
+ mod(scalar($1), OP_POSTINC)); }
| term POSTDEC
{ $$ = newUNOP(OP_POSTDEC, 0,
- ref(scalar($1), OP_POSTDEC)); }
+ mod(scalar($1), OP_POSTDEC)); }
| PREINC term
{ $$ = newUNOP(OP_PREINC, 0,
- ref(scalar($2), OP_PREINC)); }
+ mod(scalar($2), OP_PREINC)); }
| PREDEC term
{ $$ = newUNOP(OP_PREDEC, 0,
- ref(scalar($2), OP_PREDEC)); }
- | LOCAL sexpr %prec UNIOP
- { $$ = localize($2); }
- | '(' expr crp
+ mod(scalar($2), OP_PREDEC)); }
+ | myattrterm %prec UNIOP
+ { $$ = $1; }
+ | LOCAL term %prec UNIOP
+ { $$ = localize($2,$1); }
+ | '(' expr ')'
{ $$ = sawparens($2); }
| '(' ')'
- { $$ = newNULLLIST(); }
- | '[' expr crb %prec '('
+ { $$ = sawparens(newNULLLIST()); }
+ | '[' expr ']'
{ $$ = newANONLIST($2); }
- | '[' ']' %prec '('
+ | '[' ']'
{ $$ = newANONLIST(Nullop); }
- | HASHBRACK expr crhb %prec '('
+ | 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 '('
{ $$ = $1; }
- | scalar '[' expr ']' %prec '('
- { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); }
- | term ARROW '[' expr ']' %prec '('
- { $$ = newBINOP(OP_AELEM, 0,
- scalar(ref(newAVREF($1),OP_RV2AV)),
- scalar($4));}
| hsh %prec '('
{ $$ = $1; }
| ary %prec '('
{ $$ = $1; }
| arylen %prec '('
{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
- | scalar '{' expr ';' '}' %prec '('
- { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
- expect = XOPERATOR; }
- | term ARROW '{' expr ';' '}' %prec '('
- { $$ = newBINOP(OP_HELEM, 0,
- scalar(ref(newHVREF($1),OP_RV2HV)),
- jmaybe($4));
- expect = XOPERATOR; }
- | '(' expr crp '[' expr ']' %prec '('
+ | subscripted
+ { $$ = $1; }
+ | '(' expr ')' '[' expr ']'
{ $$ = newSLICEOP(0, $5, $2); }
- | '(' ')' '[' expr ']' %prec '('
+ | '(' ')' '[' expr ']'
{ $$ = newSLICEOP(0, $4, Nullop); }
- | ary '[' expr ']' %prec '('
+ | ary '[' expr ']'
{ $$ = prepend_elem(OP_ASLICE,
newOP(OP_PUSHMARK, 0),
- list(
newLISTOP(OP_ASLICE, 0,
list($3),
- ref($1, OP_ASLICE)))); }
- | ary '{' expr ';' '}' %prec '('
+ ref($1, OP_ASLICE))); }
+ | ary '{' expr ';' '}'
{ $$ = prepend_elem(OP_HSLICE,
newOP(OP_PUSHMARK, 0),
- list(
newLISTOP(OP_HSLICE, 0,
list($3),
- ref(oopsHV($1), OP_HSLICE))));
- expect = XOPERATOR; }
- | DELETE scalar '{' expr ';' '}' %prec '('
- { $$ = newBINOP(OP_DELETE, 0, oopsHV($2), jmaybe($4));
- expect = XOPERATOR; }
- | DELETE '(' scalar '{' expr ';' '}' ')' %prec '('
- { $$ = newBINOP(OP_DELETE, 0, oopsHV($3), jmaybe($5));
- expect = XOPERATOR; }
+ ref(oopsHV($1), OP_HSLICE)));
+ PL_expect = XOPERATOR; }
| THING %prec '('
{ $$ = $1; }
| amper
- { $$ = newUNOP(OP_ENTERSUBR, 0,
- scalar($1)); }
+ { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
| amper '(' ')'
- { $$ = newUNOP(OP_ENTERSUBR, OPf_STACKED, scalar($1)); }
- | amper '(' expr crp
- { $$ = newUNOP(OP_ENTERSUBR, OPf_STACKED,
- list(prepend_elem(OP_LIST, scalar($1), $3))); }
- | DO sexpr %prec UNIOP
- { $$ = newUNOP(OP_DOFILE, 0, scalar($2));
- allgvs = TRUE;}
+ { $$ = 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 '(' ')'
- { $$ = newUNOP(OP_ENTERSUBR, OPf_SPECIAL|OPf_STACKED,
- list(prepend_elem(OP_LIST,
- scalar(newCVREF(scalar($2))), newNULLLIST()))); }
- | DO WORD '(' expr crp
- { $$ = newUNOP(OP_ENTERSUBR, OPf_SPECIAL|OPf_STACKED,
- list(prepend_elem(OP_LIST,
- scalar(newCVREF(scalar($2))),
- $4))); }
+ { $$ = newUNOP(OP_ENTERSUB,
+ OPf_SPECIAL|OPf_STACKED,
+ prepend_elem(OP_LIST,
+ scalar(newCVREF(
+ (OPpENTERSUB_AMPER<<8),
+ scalar($2)
+ )),Nullop)); dep();}
+ | DO WORD '(' expr ')'
+ { $$ = newUNOP(OP_ENTERSUB,
+ OPf_SPECIAL|OPf_STACKED,
+ append_elem(OP_LIST,
+ $4,
+ scalar(newCVREF(
+ (OPpENTERSUB_AMPER<<8),
+ scalar($2)
+ )))); dep();}
| DO scalar '(' ')'
- { $$ = newUNOP(OP_ENTERSUBR, OPf_SPECIAL|OPf_STACKED,
- list(prepend_elem(OP_LIST,
- scalar(newCVREF(scalar($2))), newNULLLIST())));}
- | DO scalar '(' expr crp
- { $$ = newUNOP(OP_ENTERSUBR, OPf_SPECIAL|OPf_STACKED,
- list(prepend_elem(OP_LIST,
- scalar(newCVREF(scalar($2))),
- $4))); }
+ { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
+ prepend_elem(OP_LIST,
+ scalar(newCVREF(0,scalar($2))), Nullop)); dep();}
+ | DO scalar '(' expr ')'
+ { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
+ prepend_elem(OP_LIST,
+ $4,
+ scalar(newCVREF(0,scalar($2))))); dep();}
| LOOPEX
- { $$ = newOP($1, OPf_SPECIAL); }
- | LOOPEX WORD
- { $$ = newPVOP($1, 0,
- savestr(SvPVnx(((SVOP*)$2)->op_sv)));
- op_free($2); }
+ { $$ = newOP($1, OPf_SPECIAL);
+ PL_hints |= HINT_BLOCK_SCOPE; }
+ | LOOPEX term
+ { $$ = newLOOPEX($1,$2); }
+ | NOTOP argexpr
+ { $$ = newUNOP(OP_NOT, 0, scalar($2)); }
| UNIOP
{ $$ = newOP($1, 0); }
| UNIOP block
{ $$ = newUNOP($1, 0, $2); }
- | UNIOP sexpr
+ | UNIOP term
{ $$ = 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 '(' sexpr ')'
+ | PMFUNC '(' term ')'
{ $$ = pmruntime($1, $3, Nullop); }
- | PMFUNC '(' sexpr ',' sexpr ')'
+ | PMFUNC '(' term ',' term ')'
{ $$ = pmruntime($1, $3, $5); }
| WORD
| listop
;
-listexpr: /* NULL */
- { $$ = newNULLLIST(); }
+myattrterm: MY myterm myattrlist
+ { $$ = 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
- { $$ = newCVREF($2); }
+ { $$ = newCVREF($1,$2); }
;
scalar : '$' indirob
;
star : '*' indirob
- { $$ = newGVREF($2); }
+ { $$ = newGVREF(0,$2); }
;
indirob : WORD
{ $$ = scalar($1); }
- | scalar
- { $$ = scalar($1); }
+ | scalar %prec PREC_LOW
+ { $$ = scalar($1); }
| block
- { $$ = scalar(scope($1)); }
+ { $$ = scope($1); }
+ | PRIVATEREF
+ { $$ = $1; }
;
-crp : ',' ')'
- { $$ = 1; }
- | ')'
- { $$ = 0; }
- ;
+%% /* PROGRAM */
-crb : ',' ']'
- { $$ = 1; }
- | ']'
- { $$ = 0; }
- ;
+/* more stuff added to make perly_c.diff easier to apply */
-crhb : ',' ';' '}'
- { $$ = 1; }
- | ';' '}'
- { $$ = 0; }
- ;
+#ifdef yyparse
+#undef yyparse
+#endif
+#define yyparse() Perl_yyparse(pTHX)
-%% /* PROGRAM */
https://perl5.git.perl.org / perl5.git / blobdiff