/* perly.y
*
- * Copyright (c) 1991-2002, 2003, 2004 Larry Wall
+ * Copyright (c) 1991-2002, 2003, 2004, 2005, 2006 Larry Wall
+ * Copyright (c) 2007, 2008, 2009, 2010, 2011 by Larry Wall and others
*
* 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.'
+ * All that is gold does not glitter, not all those who wander are lost.'
+ *
+ * [p.171 of _The Lord of the Rings_, I/x: "Strider"]
*/
-/* This file holds the grammar for the Perl language. If edited, you need
+/*
+ * This file holds the grammar for the Perl language. If edited, you need
* to run regen_perly.pl, which re-creates the files perly.h, perly.tab
* and perly.act which are derived from this.
*
* The main job of of this grammar is to call the various newFOO()
* functions in op.c to build a syntax tree of OP structs.
* It relies on the lexer in toke.c to do the tokenizing.
+ *
+ * Note: due to the way that the cleanup code works WRT to freeing ops on
+ * the parse stack, it is dangerous to assign to the $n variables within
+ * an action.
*/
/* Make the parser re-entrant. */
%pure_parser
-%start prog
+%start grammar
%union {
- I32 ival;
+ I32 ival; /* __DEFAULT__ (marker for regen_perly.pl;
+ must always be 1st union member) */
char *pval;
OP *opval;
GV *gvval;
}
-%token <ival> '{'
+%token <ival> GRAMPROG GRAMEXPR GRAMBLOCK GRAMBARESTMT GRAMFULLSTMT GRAMSTMTSEQ
-%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF
-%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
+%token <ival> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';' '=' '.'
+
+%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF QWLIST
+%token <opval> FUNC0OP FUNC0SUB UNIOPSUB LSTOPSUB
+%token <opval> PLUGEXPR PLUGSTMT
%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> GIVEN WHEN DEFAULT
+%token <ival> LOOPEX DOTDOT YADAYADA
%token <ival> FUNC0 FUNC1 FUNC UNIOP LSTOP
%token <ival> RELOP EQOP MULOP ADDOP
%token <ival> DOLSHARP DO HASHBRACK NOAMP
-%token <ival> LOCAL MY MYSUB REQUIRE
-%token COLONATTR
+%token <ival> LOCAL MY REQUIRE
+%token <ival> COLONATTR FORMLBRACK FORMRBRACK
+
+%type <ival> grammar remember mremember
+%type <ival> startsub startanonsub startformsub
-%type <ival> prog decl format startsub startanonsub startformsub mintro
-%type <ival> progstart remember mremember '&' savescope
-%type <opval> block mblock lineseq line loop cond else
+%type <ival> mintro
+
+%type <opval> stmtseq fullstmt labfullstmt barestmt block mblock else
%type <opval> expr term subscripted scalar ary hsh arylen star amper sideff
-%type <opval> argexpr nexpr texpr iexpr mexpr mnexpr 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 <opval> termbinop termunop anonymous termdo
-%type <pval> label
-
-%nonassoc PREC_LOW
+%type <opval> sliceme kvslice gelem
+%type <opval> listexpr nexpr texpr iexpr mexpr mnexpr miexpr
+%type <opval> optlistexpr optexpr indirob listop method
+%type <opval> formname subname proto optsubbody cont my_scalar formblock
+%type <opval> subattrlist myattrlist myattrterm myterm
+%type <opval> realsubbody subsignature termbinop termunop anonymous termdo
+%type <opval> formstmtseq formline formarg
+
+%nonassoc <ival> PREC_LOW
%nonassoc LOOPEX
%left <ival> OROP DOROP
-%left ANDOP
-%right NOTOP
+%left <ival> ANDOP
+%right <ival> NOTOP
%nonassoc LSTOP LSTOPSUB
-%left ','
+%left <ival> ','
%right <ival> ASSIGNOP
-%right '?' ':'
-%nonassoc DOTDOT
-%left OROR DORDOR
-%left ANDAND
+%right <ival> '?' ':'
+%nonassoc DOTDOT YADAYADA
+%left <ival> OROR DORDOR
+%left <ival> ANDAND
%left <ival> BITOROP
%left <ival> BITANDOP
%nonassoc EQOP
%nonassoc RELOP
%nonassoc UNIOP UNIOPSUB
+%nonassoc REQUIRE
%left <ival> SHIFTOP
%left ADDOP
%left MULOP
%left <ival> MATCHOP
-%right '!' '~' UMINUS REFGEN
+%right <ival> '!' '~' UMINUS REFGEN
%right <ival> POWOP
-%nonassoc PREINC PREDEC POSTINC POSTDEC
-%left ARROW
+%nonassoc <ival> PREINC PREDEC POSTINC POSTDEC POSTJOIN
+%left <ival> ARROW
%nonassoc <ival> ')'
-%left '('
+%left <ival> '('
%left '[' '{'
%% /* RULES */
-/* The whole program */
-prog : progstart
- /*CONTINUED*/ lineseq
- { $$ = $1; newPROG(block_end($1,$2)); }
+/* Top-level choice of what kind of thing yyparse was called to parse */
+grammar : GRAMPROG
+ {
+ parser->expect = XSTATE;
+ }
+ remember stmtseq
+ {
+ newPROG(block_end($3,$4));
+ $$ = 0;
+ }
+ | GRAMEXPR
+ {
+ parser->expect = XTERM;
+ }
+ optexpr
+ {
+ PL_eval_root = $3;
+ $$ = 0;
+ }
+ | GRAMBLOCK
+ {
+ parser->expect = XBLOCK;
+ }
+ block
+ {
+ PL_pad_reset_pending = TRUE;
+ PL_eval_root = $3;
+ $$ = 0;
+ yyunlex();
+ parser->yychar = YYEOF;
+ }
+ | GRAMBARESTMT
+ {
+ parser->expect = XSTATE;
+ }
+ barestmt
+ {
+ PL_pad_reset_pending = TRUE;
+ PL_eval_root = $3;
+ $$ = 0;
+ yyunlex();
+ parser->yychar = YYEOF;
+ }
+ | GRAMFULLSTMT
+ {
+ parser->expect = XSTATE;
+ }
+ fullstmt
+ {
+ PL_pad_reset_pending = TRUE;
+ PL_eval_root = $3;
+ $$ = 0;
+ yyunlex();
+ parser->yychar = YYEOF;
+ }
+ | GRAMSTMTSEQ
+ {
+ parser->expect = XSTATE;
+ }
+ stmtseq
+ {
+ PL_eval_root = $3;
+ $$ = 0;
+ }
;
/* An ordinary block */
-block : '{' remember lineseq '}'
- { if (PL_copline > (line_t)$1)
- PL_copline = (line_t)$1;
- $$ = block_end($2, $3); }
+block : '{' remember stmtseq '}'
+ { if (parser->copline > (line_t)$1)
+ parser->copline = (line_t)$1;
+ $$ = block_end($2, $3);
+ }
+ ;
+
+/* format body */
+formblock: '=' remember ';' FORMRBRACK formstmtseq ';' '.'
+ { if (parser->copline > (line_t)$1)
+ parser->copline = (line_t)$1;
+ $$ = block_end($2, $5);
+ }
;
remember: /* NULL */ /* start a full lexical scope */
{ $$ = block_start(TRUE); }
;
-progstart:
- {
- PL_expect = XSTATE; $$ = block_start(TRUE);
- }
+mblock : '{' mremember stmtseq '}'
+ { if (parser->copline > (line_t)$1)
+ parser->copline = (line_t)$1;
+ $$ = block_end($2, $3);
+ }
+ ;
+
+mremember: /* NULL */ /* start a partial lexical scope */
+ { $$ = block_start(FALSE); }
;
+/* A sequence of statements in the program */
+stmtseq : /* NULL */
+ { $$ = (OP*)NULL; }
+ | stmtseq fullstmt
+ { $$ = op_append_list(OP_LINESEQ, $1, $2);
+ PL_pad_reset_pending = TRUE;
+ if ($1 && $2)
+ PL_hints |= HINT_BLOCK_SCOPE;
+ }
+ ;
-mblock : '{' mremember lineseq '}'
- { if (PL_copline > (line_t)$1)
- PL_copline = (line_t)$1;
- $$ = block_end($2, $3); }
+/* A sequence of format lines */
+formstmtseq: /* NULL */
+ { $$ = (OP*)NULL; }
+ | formstmtseq formline
+ { $$ = op_append_list(OP_LINESEQ, $1, $2);
+ PL_pad_reset_pending = TRUE;
+ if ($1 && $2)
+ PL_hints |= HINT_BLOCK_SCOPE;
+ }
;
-mremember: /* NULL */ /* start a partial lexical scope */
- { $$ = block_start(FALSE); }
+/* A statement in the program, including optional labels */
+fullstmt: barestmt
+ {
+ $$ = $1 ? newSTATEOP(0, NULL, $1) : NULL;
+ }
+ | labfullstmt
+ { $$ = $1; }
;
-savescope: /* NULL */ /* remember stack pos in case of error */
- { $$ = PL_savestack_ix; }
+labfullstmt: LABEL barestmt
+ {
+ $$ = newSTATEOP(SVf_UTF8 * $1[strlen($1)+1], $1, $2);
+ }
+ | LABEL labfullstmt
+ {
+ $$ = newSTATEOP(SVf_UTF8 * $1[strlen($1)+1], $1, $2);
+ }
+ ;
-/* A collection of "lines" in the program */
-lineseq : /* NULL */
- { $$ = Nullop; }
- | lineseq decl
+/* A bare statement, lacking label and other aspects of state op */
+barestmt: PLUGSTMT
{ $$ = $1; }
- | lineseq savescope line
- { LEAVE_SCOPE($2);
- $$ = append_list(OP_LINESEQ,
- (LISTOP*)$1, (LISTOP*)$3);
- PL_pad_reset_pending = TRUE;
- if ($1 && $3) PL_hints |= HINT_BLOCK_SCOPE; }
- ;
-
-/* A "line" in the program */
-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; }
+ | FORMAT startformsub formname formblock
+ {
+ CV *fmtcv = PL_compcv;
+ newFORM($2, $3, $4);
+ $$ = (OP*)NULL;
+ if (CvOUTSIDE(fmtcv) && !CvEVAL(CvOUTSIDE(fmtcv))) {
+ SvREFCNT_inc_simple_void(fmtcv);
+ pad_add_anon(fmtcv, OP_NULL);
+ }
+ }
+ | SUB subname startsub
+ {
+ if ($2->op_type == OP_CONST) {
+ const char *const name =
+ SvPV_nolen_const(((SVOP*)$2)->op_sv);
+ if (strEQ(name, "BEGIN") || strEQ(name, "END")
+ || strEQ(name, "INIT") || strEQ(name, "CHECK")
+ || strEQ(name, "UNITCHECK"))
+ CvSPECIAL_on(PL_compcv);
+ }
+ else
+ /* State subs inside anonymous subs need to be
+ clonable themselves. */
+ if (CvANON(CvOUTSIDE(PL_compcv))
+ || CvCLONE(CvOUTSIDE(PL_compcv))
+ || !PadnameIsSTATE(PadlistNAMESARRAY(CvPADLIST(
+ CvOUTSIDE(PL_compcv)
+ ))[$2->op_targ]))
+ CvCLONE_on(PL_compcv);
+ parser->in_my = 0;
+ parser->in_my_stash = NULL;
+ }
+ proto subattrlist optsubbody
+ {
+ SvREFCNT_inc_simple_void(PL_compcv);
+ $2->op_type == OP_CONST
+ ? newATTRSUB($3, $2, $5, $6, $7)
+ : newMYSUB($3, $2, $5, $6, $7)
+ ;
+ $$ = (OP*)NULL;
+ intro_my();
+ }
+ | PACKAGE WORD WORD ';'
+ {
+ package($3);
+ if ($2)
+ package_version($2);
+ $$ = (OP*)NULL;
+ }
+ | USE startsub
+ { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
+ WORD WORD optlistexpr ';'
+ {
+ SvREFCNT_inc_simple_void(PL_compcv);
+ utilize($1, $2, $4, $5, $6);
+ $$ = (OP*)NULL;
+ }
+ | IF '(' remember mexpr ')' mblock else
+ {
+ $$ = block_end($3,
+ newCONDOP(0, $4, op_scope($6), $7));
+ parser->copline = (line_t)$1;
+ }
+ | UNLESS '(' remember miexpr ')' mblock else
+ {
+ $$ = block_end($3,
+ newCONDOP(0, $4, op_scope($6), $7));
+ parser->copline = (line_t)$1;
+ }
+ | GIVEN '(' remember mexpr ')' mblock
+ {
+ const PADOFFSET offset = pad_findmy_pvs("$_", 0);
+ $$ = block_end($3,
+ newGIVENOP($4, op_scope($6),
+ offset == NOT_IN_PAD
+ || PAD_COMPNAME_FLAGS_isOUR(offset)
+ ? 0
+ : offset));
+ parser->copline = (line_t)$1;
+ }
+ | WHEN '(' remember mexpr ')' mblock
+ { $$ = block_end($3, newWHENOP($4, op_scope($6))); }
+ | DEFAULT block
+ { $$ = newWHENOP(0, op_scope($2)); }
+ | WHILE '(' remember texpr ')' mintro mblock cont
+ {
+ $$ = block_end($3,
+ newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ $4, $7, $8, $6));
+ parser->copline = (line_t)$1;
+ }
+ | UNTIL '(' remember iexpr ')' mintro mblock cont
+ {
+ $$ = block_end($3,
+ newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ $4, $7, $8, $6));
+ parser->copline = (line_t)$1;
+ }
+ | FOR '(' remember mnexpr ';'
+ { parser->expect = XTERM; }
+ texpr ';'
+ { parser->expect = XTERM; }
+ mintro mnexpr ')'
+ mblock
+ {
+ OP *initop = $4;
+ OP *forop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ scalar($7), $13, $11, $10);
+ if (initop) {
+ forop = op_prepend_elem(OP_LINESEQ, initop,
+ op_append_elem(OP_LINESEQ,
+ newOP(OP_UNSTACK, OPf_SPECIAL),
+ forop));
+ }
+ $$ = block_end($3, forop);
+ parser->copline = (line_t)$1;
+ }
+ | FOR MY remember my_scalar '(' mexpr ')' mblock cont
+ {
+ $$ = block_end($3, newFOROP(0, $4, $6, $8, $9));
+ parser->copline = (line_t)$1;
+ }
+ | FOR scalar '(' remember mexpr ')' mblock cont
+ {
+ $$ = block_end($4, newFOROP(0,
+ op_lvalue($2, OP_ENTERLOOP), $5, $7, $8));
+ parser->copline = (line_t)$1;
+ }
+ | FOR '(' remember mexpr ')' mblock cont
+ {
+ $$ = block_end($3,
+ newFOROP(0, (OP*)NULL, $4, $6, $7));
+ parser->copline = (line_t)$1;
+ }
+ | block cont
+ {
+ /* a block is a loop that happens once */
+ $$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ (OP*)NULL, $1, $2, 0);
+ }
+ | PACKAGE WORD WORD '{' remember
+ {
+ package($3);
+ if ($2) {
+ package_version($2);
+ }
+ }
+ stmtseq '}'
+ {
+ /* a block is a loop that happens once */
+ $$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ (OP*)NULL, block_end($5, $7), (OP*)NULL, 0);
+ if (parser->copline > (line_t)$4)
+ parser->copline = (line_t)$4;
+ }
+ | sideff ';'
+ {
+ $$ = $1;
+ }
+ | ';'
+ {
+ $$ = (OP*)NULL;
+ parser->copline = NOLINE;
+ }
+ ;
+
+/* Format line */
+formline: THING formarg
+ { OP *list;
+ if ($2) {
+ OP *term = $2;
+ list = op_append_elem(OP_LIST, $1, term);
+ }
+ else {
+ list = $1;
+ }
+ if (parser->copline == NOLINE)
+ parser->copline = CopLINE(PL_curcop)-1;
+ else parser->copline--;
+ $$ = newSTATEOP(0, NULL,
+ convert(OP_FORMLINE, 0, list));
+ }
+ ;
+
+formarg : /* NULL */
+ { $$ = NULL; }
+ | FORMLBRACK stmtseq FORMRBRACK
+ { $$ = op_unscope($2); }
;
/* An expression which may have a side-effect */
sideff : error
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
| expr
{ $$ = $1; }
| expr IF expr
| expr WHILE expr
{ $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); }
| expr UNTIL iexpr
- { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);}
+ { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1); }
| expr FOR expr
- { $$ = newFOROP(0, Nullch, (line_t)$2,
- Nullop, $3, $1, Nullop); }
+ { $$ = newFOROP(0, (OP*)NULL, $3, $1, (OP*)NULL);
+ parser->copline = (line_t)$2; }
+ | expr WHEN expr
+ { $$ = newWHENOP($3, op_scope($1)); }
;
/* else and elsif blocks */
else : /* NULL */
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
| ELSE mblock
- { ($2)->op_flags |= OPf_PARENS; $$ = scope($2); }
+ {
+ ($2)->op_flags |= OPf_PARENS;
+ $$ = op_scope($2);
+ }
| ELSIF '(' mexpr ')' mblock else
- { PL_copline = (line_t)$1;
- $$ = newCONDOP(0, $3, scope($5), $6);
- PL_hints |= HINT_BLOCK_SCOPE; }
- ;
-
-/* Real conditional expressions */
-cond : IF '(' remember mexpr ')' mblock else
- { PL_copline = (line_t)$1;
- $$ = block_end($3,
- newCONDOP(0, $4, scope($6), $7)); }
- | UNLESS '(' remember miexpr ')' mblock else
- { PL_copline = (line_t)$1;
- $$ = block_end($3,
- newCONDOP(0, $4, scope($6), $7)); }
+ { parser->copline = (line_t)$1;
+ $$ = newCONDOP(0,
+ newSTATEOP(OPf_SPECIAL,NULL,$3),
+ op_scope($5), $6);
+ PL_hints |= HINT_BLOCK_SCOPE;
+ }
;
/* Continue blocks */
cont : /* NULL */
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
| CONTINUE block
- { $$ = scope($2); }
- ;
-
-/* Loops: while, until, for, and a bare block */
-loop : label WHILE '(' remember texpr ')' mintro mblock cont
- { PL_copline = (line_t)$2;
- $$ = block_end($4,
- newSTATEOP(0, $1,
- newWHILEOP(0, 1, (LOOP*)Nullop,
- $2, $5, $8, $9, $7))); }
- | label UNTIL '(' remember iexpr ')' mintro mblock cont
- { PL_copline = (line_t)$2;
- $$ = block_end($4,
- newSTATEOP(0, $1,
- newWHILEOP(0, 1, (LOOP*)Nullop,
- $2, $5, $8, $9, $7))); }
- | label FOR MY remember my_scalar '(' mexpr ')' mblock cont
- { $$ = block_end($4,
- newFOROP(0, $1, (line_t)$2, $5, $7, $9, $10)); }
- | label FOR scalar '(' remember mexpr ')' mblock cont
- { $$ = block_end($5,
- newFOROP(0, $1, (line_t)$2, mod($3, OP_ENTERLOOP),
- $6, $8, $9)); }
- | label FOR '(' remember mexpr ')' mblock cont
- { $$ = block_end($4,
- newFOROP(0, $1, (line_t)$2, Nullop, $5, $7, $8)); }
- | label FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')'
- mblock
- /* basically fake up an initialize-while lineseq */
- { OP *forop;
- PL_copline = (line_t)$2;
- forop = newSTATEOP(0, $1,
- newWHILEOP(0, 1, (LOOP*)Nullop,
- $2, scalar($7),
- $12, $10, $9));
- if ($5) {
- forop = append_elem(OP_LINESEQ,
- newSTATEOP(0, ($1?savepv($1):Nullch),
- $5),
- forop);
- }
-
- $$ = block_end($4, forop); }
- | label block cont /* a block is a loop that happens once */
- { $$ = newSTATEOP(0, $1,
- newWHILEOP(0, 1, (LOOP*)Nullop,
- NOLINE, Nullop, $2, $3, 0)); }
+ { $$ = op_scope($2); }
;
/* determine whether there are any new my declarations */
/* Normal expression */
nexpr : /* NULL */
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
| sideff
;
/* Boolean expression */
texpr : /* NULL means true */
- { (void)scan_num("1", &yylval); $$ = yylval.opval; }
+ { YYSTYPE tmplval;
+ (void)scan_num("1", &tmplval);
+ $$ = tmplval.opval; }
| expr
;
{ $$ = $1; intro_my(); }
;
-/* Optional "MAIN:"-style loop labels */
-label : /* empty */
- { $$ = Nullch; }
- | LABEL
- ;
-
-/* Some kind of declaration - does not take part in the parse tree */
-decl : format
- { $$ = 0; }
- | subrout
- { $$ = 0; }
- | mysubrout
- { $$ = 0; }
- | package
- { $$ = 0; }
- | use
- { $$ = 0; }
- ;
-
-format : FORMAT startformsub formname block
- { newFORM($2, $3, $4); }
- ;
-
formname: WORD { $$ = $1; }
- | /* NULL */ { $$ = Nullop; }
- ;
-
-/* Unimplemented "my sub foo { }" */
-mysubrout: MYSUB startsub subname proto subattrlist subbody
- { newMYSUB($2, $3, $4, $5, $6); }
- ;
-
-/* Subroutine definition */
-subrout : SUB startsub subname proto subattrlist subbody
- { newATTRSUB($2, $3, $4, $5, $6); }
+ | /* NULL */ { $$ = (OP*)NULL; }
;
startsub: /* NULL */ /* start a regular subroutine scope */
- { $$ = start_subparse(FALSE, 0); }
+ { $$ = start_subparse(FALSE, 0);
+ SAVEFREESV(PL_compcv); }
+
;
startanonsub: /* NULL */ /* start an anonymous subroutine scope */
- { $$ = start_subparse(FALSE, CVf_ANON); }
+ { $$ = start_subparse(FALSE, CVf_ANON);
+ SAVEFREESV(PL_compcv); }
;
startformsub: /* NULL */ /* start a format subroutine scope */
- { $$ = start_subparse(TRUE, 0); }
+ { $$ = start_subparse(TRUE, 0);
+ SAVEFREESV(PL_compcv); }
;
/* Name of a subroutine - must be a bareword, could be special */
-subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv);
- if (strEQ(name, "BEGIN") || strEQ(name, "END")
- || strEQ(name, "INIT") || strEQ(name, "CHECK"))
- CvSPECIAL_on(PL_compcv);
- $$ = $1; }
+subname : WORD
+ | PRIVATEREF
;
/* Subroutine prototype */
proto : /* NULL */
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
| THING
;
/* Optional list of subroutine attributes */
subattrlist: /* NULL */
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
| COLONATTR THING
{ $$ = $2; }
| COLONATTR
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
;
/* List of attributes for a "my" variable declaration */
myattrlist: COLONATTR THING
{ $$ = $2; }
| COLONATTR
- { $$ = Nullop; }
+ { $$ = (OP*)NULL; }
;
-/* Subroutine body - either null or a block */
-subbody : block { $$ = $1; }
- | ';' { $$ = Nullop; PL_expect = XSTATE; }
+/* Optional subroutine signature */
+subsignature: /* NULL */ { $$ = (OP*)NULL; }
+ | '('
+ {
+ if (!FEATURE_SIGNATURES_IS_ENABLED)
+ Perl_croak(aTHX_ "Experimental "
+ "subroutine signatures not enabled");
+ Perl_ck_warner_d(aTHX_
+ packWARN(WARN_EXPERIMENTAL__SIGNATURES),
+ "The signatures feature is experimental");
+ $<opval>$ = parse_subsignature();
+ }
+ ')'
+ {
+ $$ = op_append_list(OP_LINESEQ, $<opval>2,
+ newSTATEOP(0, NULL, sawparens(newNULLLIST())));
+ parser->expect = XBLOCK;
+ }
;
-package : PACKAGE WORD ';'
- { package($2); }
+/* Subroutine body - block with optional signature */
+realsubbody: remember subsignature '{' stmtseq '}'
+ {
+ if (parser->copline > (line_t)$3)
+ parser->copline = (line_t)$3;
+ $$ = block_end($1,
+ op_append_list(OP_LINESEQ, $2, $4));
+ }
;
-use : USE startsub
- { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
- WORD WORD listexpr ';'
- { utilize($1, $2, $4, $5, $6); }
+/* Optional subroutine body, for named subroutine declaration */
+optsubbody: realsubbody { $$ = $1; }
+ | ';' { $$ = (OP*)NULL; }
;
/* Ordinary expressions; logical combinations */
{ $$ = newLOGOP($2, 0, $1, $3); }
| expr DOROP expr
{ $$ = newLOGOP(OP_DOR, 0, $1, $3); }
- | argexpr %prec PREC_LOW
+ | listexpr %prec PREC_LOW
;
/* Expressions are a list of terms joined by commas */
-argexpr : argexpr ','
+listexpr: listexpr ','
{ $$ = $1; }
- | argexpr ',' term
- { $$ = append_elem(OP_LIST, $1, $3); }
+ | listexpr ',' term
+ {
+ OP* term = $3;
+ $$ = op_append_elem(OP_LIST, $1, term);
+ }
| term %prec PREC_LOW
;
/* List operators */
-listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */
+listop : LSTOP indirob listexpr /* map {...} @args or print $fh @args */
{ $$ = convert($1, OPf_STACKED,
- prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); }
+ op_prepend_elem(OP_LIST, newGVREF($1,$2), $3) );
+ }
| FUNC '(' indirob expr ')' /* print ($fh @args */
{ $$ = convert($1, OPf_STACKED,
- prepend_elem(OP_LIST, newGVREF($1,$3), $4) ); }
- | term ARROW method '(' listexprcom ')' /* $foo->bar(list) */
+ op_prepend_elem(OP_LIST, newGVREF($1,$3), $4) );
+ }
+ | term ARROW method '(' optexpr ')' /* $foo->bar(list) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST,
- prepend_elem(OP_LIST, scalar($1), $5),
- newUNOP(OP_METHOD, 0, $3))); }
+ op_append_elem(OP_LIST,
+ op_prepend_elem(OP_LIST, scalar($1), $5),
+ newUNOP(OP_METHOD, 0, $3)));
+ }
| term ARROW method /* $foo->bar */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST, scalar($1),
- newUNOP(OP_METHOD, 0, $3))); }
- | METHOD indirob listexpr /* new Class @args */
+ op_append_elem(OP_LIST, scalar($1),
+ newUNOP(OP_METHOD, 0, $3)));
+ }
+ | METHOD indirob optlistexpr /* new Class @args */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST,
- prepend_elem(OP_LIST, $2, $3),
- newUNOP(OP_METHOD, 0, $1))); }
- | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */
+ op_append_elem(OP_LIST,
+ op_prepend_elem(OP_LIST, $2, $3),
+ newUNOP(OP_METHOD, 0, $1)));
+ }
+ | FUNCMETH indirob '(' optexpr ')' /* method $object (@args) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST,
- prepend_elem(OP_LIST, $2, $4),
- newUNOP(OP_METHOD, 0, $1))); }
- | LSTOP listexpr /* print @args */
+ op_append_elem(OP_LIST,
+ op_prepend_elem(OP_LIST, $2, $4),
+ newUNOP(OP_METHOD, 0, $1)));
+ }
+ | LSTOP optlistexpr /* print @args */
{ $$ = convert($1, 0, $2); }
- | FUNC '(' listexprcom ')' /* print (@args) */
+ | FUNC '(' optexpr ')' /* print (@args) */
{ $$ = convert($1, 0, $3); }
| LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */
- { $3 = newANONATTRSUB($2, 0, Nullop, $3); }
- listexpr %prec LSTOP /* ... @bar */
+ { SvREFCNT_inc_simple_void(PL_compcv);
+ $<opval>$ = newANONATTRSUB($2, 0, (OP*)NULL, $3); }
+ optlistexpr %prec LSTOP /* ... @bar */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST,
- prepend_elem(OP_LIST, $3, $5), $1)); }
+ op_append_elem(OP_LIST,
+ op_prepend_elem(OP_LIST, $<opval>4, $5), $1));
+ }
;
/* Names of methods. May use $object->$methodname */
;
/* Some kind of subscripted expression */
-subscripted: star '{' expr ';' '}' /* *main::{something} */
+subscripted: gelem '{' expr ';' '}' /* *main::{something} */
/* In this and all the hash accessors, ';' is
* provided by the tokeniser */
- { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3));
- PL_expect = XOPERATOR; }
+ { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); }
| scalar '[' expr ']' /* $array[$element] */
- { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); }
+ { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3));
+ }
| term ARROW '[' expr ']' /* somearef->[$element] */
{ $$ = newBINOP(OP_AELEM, 0,
ref(newAVREF($1),OP_RV2AV),
- scalar($4));}
+ scalar($4));
+ }
| subscripted '[' expr ']' /* $foo->[$bar]->[$baz] */
{ $$ = newBINOP(OP_AELEM, 0,
ref(newAVREF($1),OP_RV2AV),
- scalar($3));}
- | scalar '{' expr ';' '}' /* $foo->{bar();} */
+ scalar($3));
+ }
+ | scalar '{' expr ';' '}' /* $foo{bar();} */
{ $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
- PL_expect = XOPERATOR; }
+ }
| term ARROW '{' expr ';' '}' /* somehref->{bar();} */
{ $$ = newBINOP(OP_HELEM, 0,
ref(newHVREF($1),OP_RV2HV),
- jmaybe($4));
- PL_expect = XOPERATOR; }
+ jmaybe($4)); }
| subscripted '{' expr ';' '}' /* $foo->[bar]->{baz;} */
{ $$ = newBINOP(OP_HELEM, 0,
ref(newHVREF($1),OP_RV2HV),
- jmaybe($3));
- PL_expect = XOPERATOR; }
+ jmaybe($3)); }
| term ARROW '(' ')' /* $subref->() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
newCVREF(0, scalar($1))); }
| term ARROW '(' expr ')' /* $subref->(@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST, $4,
+ op_append_elem(OP_LIST, $4,
newCVREF(0, scalar($1)))); }
| subscripted '(' expr ')' /* $foo->{bar}->(@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST, $3,
+ op_append_elem(OP_LIST, $3,
newCVREF(0, scalar($1)))); }
| subscripted '(' ')' /* $foo->{bar}->() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
newCVREF(0, scalar($1))); }
| '(' expr ')' '[' expr ']' /* list slice */
{ $$ = newSLICEOP(0, $5, $2); }
+ | QWLIST '[' expr ']' /* list literal slice */
+ { $$ = newSLICEOP(0, $3, $1); }
| '(' ')' '[' expr ']' /* empty list slice! */
- { $$ = newSLICEOP(0, $4, Nullop); }
+ { $$ = newSLICEOP(0, $4, (OP*)NULL); }
;
/* Binary operators between terms */
-termbinop : term ASSIGNOP term /* $x = $y */
+termbinop: term ASSIGNOP term /* $x = $y */
{ $$ = newASSIGNOP(OPf_STACKED, $1, $2, $3); }
| term POWOP term /* $x ** $y */
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
| term MULOP term /* $x * $y, $x x $y */
{ if ($2 != OP_REPEAT)
scalar($1);
- $$ = newBINOP($2, 0, $1, scalar($3)); }
+ $$ = newBINOP($2, 0, $1, scalar($3));
+ }
| term ADDOP term /* $x + $y */
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
| term SHIFTOP term /* $x >> $y, $x << $y */
| term BITOROP term /* $x | $y */
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
| term DOTDOT term /* $x..$y, $x...$y */
- { $$ = newRANGE($2, scalar($1), scalar($3));}
+ { $$ = newRANGE($2, scalar($1), scalar($3)); }
| term ANDAND term /* $x && $y */
{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
| term OROR term /* $x || $y */
{ $$ = newUNOP(OP_NEGATE, 0, scalar($2)); }
| '+' term %prec UMINUS /* +$x */
{ $$ = $2; }
+
| '!' term /* !$x */
{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
| '~' term /* ~$x */
- { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));}
+ { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2)); }
| term POSTINC /* $x++ */
{ $$ = newUNOP(OP_POSTINC, 0,
- mod(scalar($1), OP_POSTINC)); }
+ op_lvalue(scalar($1), OP_POSTINC)); }
| term POSTDEC /* $x-- */
{ $$ = newUNOP(OP_POSTDEC, 0,
- mod(scalar($1), OP_POSTDEC)); }
+ op_lvalue(scalar($1), OP_POSTDEC));}
+ | term POSTJOIN /* implicit join after interpolated ->@ */
+ { $$ = convert(OP_JOIN, 0,
+ op_append_elem(
+ OP_LIST,
+ newSVREF(scalar(
+ newSVOP(OP_CONST,0,
+ newSVpvs("\""))
+ )),
+ $1
+ ));
+ }
| PREINC term /* ++$x */
{ $$ = newUNOP(OP_PREINC, 0,
- mod(scalar($2), OP_PREINC)); }
+ op_lvalue(scalar($2), OP_PREINC)); }
| PREDEC term /* --$x */
{ $$ = newUNOP(OP_PREDEC, 0,
- mod(scalar($2), OP_PREDEC)); }
+ op_lvalue(scalar($2), OP_PREDEC)); }
;
anonymous: '[' expr ']'
{ $$ = newANONLIST($2); }
| '[' ']'
- { $$ = newANONLIST(Nullop); }
+ { $$ = newANONLIST((OP*)NULL);}
| HASHBRACK expr ';' '}' %prec '(' /* { foo => "Bar" } */
{ $$ = newANONHASH($2); }
| HASHBRACK ';' '}' %prec '(' /* { } (';' by tokener) */
- { $$ = newANONHASH(Nullop); }
- | ANONSUB startanonsub proto subattrlist block %prec '('
- { $$ = newANONATTRSUB($2, $3, $4, $5); }
+ { $$ = newANONHASH((OP*)NULL); }
+ | ANONSUB startanonsub proto subattrlist realsubbody %prec '('
+ { SvREFCNT_inc_simple_void(PL_compcv);
+ $$ = newANONATTRSUB($2, $3, $4, $5); }
;
/* Things called with "do" */
termdo : DO term %prec UNIOP /* do $filename */
- { $$ = dofile($2, $1); }
+ { $$ = dofile($2, $1);}
| DO block %prec '(' /* do { code */
- { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); }
- | DO WORD '(' ')' /* do somesub() */
- { $$ = newUNOP(OP_ENTERSUB,
- OPf_SPECIAL|OPf_STACKED,
- prepend_elem(OP_LIST,
- scalar(newCVREF(
- (OPpENTERSUB_AMPER<<8),
- scalar($2)
- )),Nullop)); dep();}
- | DO WORD '(' expr ')' /* do somesub(@args) */
- { $$ = newUNOP(OP_ENTERSUB,
- OPf_SPECIAL|OPf_STACKED,
- append_elem(OP_LIST,
- $4,
- scalar(newCVREF(
- (OPpENTERSUB_AMPER<<8),
- scalar($2)
- )))); dep();}
- | DO scalar '(' ')' /* do $subref () */
- { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
- prepend_elem(OP_LIST,
- scalar(newCVREF(0,scalar($2))), Nullop)); dep();}
- | DO scalar '(' expr ')' /* do $subref (@args) */
- { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
- prepend_elem(OP_LIST,
- $4,
- scalar(newCVREF(0,scalar($2))))); dep();}
-
+ { $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($2));}
;
term : termbinop
| term '?' term ':' term
{ $$ = newCONDOP(0, $1, $3, $5); }
| REFGEN term /* \$x, \@y, \%z */
- { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); }
+ { $$ = newUNOP(OP_REFGEN, 0, op_lvalue($2,OP_REFGEN)); }
| myattrterm %prec UNIOP
{ $$ = $1; }
| LOCAL term %prec UNIOP
{ $$ = localize($2,$1); }
| '(' expr ')'
{ $$ = sawparens($2); }
+ | QWLIST
+ { $$ = $1; }
| '(' ')'
{ $$ = sawparens(newNULLLIST()); }
| scalar %prec '('
{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
| subscripted
{ $$ = $1; }
- | ary '[' expr ']' /* array slice */
- { $$ = prepend_elem(OP_ASLICE,
+ | sliceme '[' expr ']' /* array slice */
+ { $$ = op_prepend_elem(OP_ASLICE,
newOP(OP_PUSHMARK, 0),
newLISTOP(OP_ASLICE, 0,
list($3),
- ref($1, OP_ASLICE))); }
- | ary '{' expr ';' '}' /* @hash{@keys} */
- { $$ = prepend_elem(OP_HSLICE,
+ ref($1, OP_ASLICE)));
+ if ($$ && $1)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
+ }
+ | kvslice '[' expr ']' /* array key/value slice */
+ { $$ = op_prepend_elem(OP_KVASLICE,
+ newOP(OP_PUSHMARK, 0),
+ newLISTOP(OP_KVASLICE, 0,
+ list($3),
+ ref(oopsAV($1), OP_KVASLICE)));
+ if ($$ && $1)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
+ }
+ | sliceme '{' expr ';' '}' /* @hash{@keys} */
+ { $$ = op_prepend_elem(OP_HSLICE,
newOP(OP_PUSHMARK, 0),
newLISTOP(OP_HSLICE, 0,
list($3),
ref(oopsHV($1), OP_HSLICE)));
- PL_expect = XOPERATOR; }
+ if ($$ && $1)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
+ }
+ | kvslice '{' expr ';' '}' /* %hash{@keys} */
+ { $$ = op_prepend_elem(OP_KVHSLICE,
+ newOP(OP_PUSHMARK, 0),
+ newLISTOP(OP_KVHSLICE, 0,
+ list($3),
+ ref($1, OP_KVHSLICE)));
+ if ($$ && $1)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
+ }
| THING %prec '('
{ $$ = $1; }
| amper /* &foo; */
{ $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
- | amper '(' ')' /* &foo() */
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
- | amper '(' expr ')' /* &foo(@args) */
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST, $3, scalar($1))); }
- | NOAMP WORD listexpr /* foo(@args) */
+ | amper '(' ')' /* &foo() or foo() */
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1));
+ }
+ | amper '(' expr ')' /* &foo(@args) or foo(@args) */
+ {
+ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
+ op_append_elem(OP_LIST, $3, scalar($1)));
+ }
+ | NOAMP subname optlistexpr /* foo @args (no parens) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST, $3, scalar($2))); }
+ op_append_elem(OP_LIST, $3, scalar($2)));
+ }
+ | term ARROW '$' '*'
+ { $$ = newSVREF($1); }
+ | term ARROW '@' '*'
+ { $$ = newAVREF($1); }
+ | term ARROW '%' '*'
+ { $$ = newHVREF($1); }
+ | term ARROW '&' '*'
+ { $$ = newUNOP(OP_ENTERSUB, 0,
+ scalar(newCVREF($3,$1))); }
+ | term ARROW '*' '*' %prec '('
+ { $$ = newGVREF(0,$1); }
| LOOPEX /* loop exiting command (goto, last, dump, etc) */
{ $$ = newOP($1, OPf_SPECIAL);
PL_hints |= HINT_BLOCK_SCOPE; }
| LOOPEX term
{ $$ = newLOOPEX($1,$2); }
- | NOTOP argexpr /* not $foo */
+ | NOTOP listexpr /* not $foo */
{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
| UNIOP /* Unary op, $_ implied */
{ $$ = newOP($1, 0); }
- | UNIOP block /* eval { foo } */
+ | UNIOP block /* eval { foo }* */
{ $$ = newUNOP($1, 0, $2); }
| UNIOP term /* Unary op */
{ $$ = newUNOP($1, 0, $2); }
{ $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0); }
| REQUIRE term /* require Foo */
{ $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2); }
+ | UNIOPSUB
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
| UNIOPSUB term /* Sub treated as unop */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- append_elem(OP_LIST, $2, scalar($1))); }
+ op_append_elem(OP_LIST, $2, scalar($1))); }
| FUNC0 /* Nullary operator */
{ $$ = newOP($1, 0); }
| FUNC0 '(' ')'
- { $$ = newOP($1, 0); }
+ { $$ = newOP($1, 0);}
+ | FUNC0OP /* Same as above, but op created in toke.c */
+ { $$ = $1; }
+ | FUNC0OP '(' ')'
+ { $$ = $1; }
| FUNC0SUB /* Sub treated as nullop */
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- scalar($1)); }
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
| FUNC1 '(' ')' /* not () */
- { $$ = $1 == OP_NOT ? newUNOP($1, 0, newSVOP(OP_CONST, 0, newSViv(0)))
- : newOP($1, OPf_SPECIAL); }
+ { $$ = ($1 == OP_NOT)
+ ? newUNOP($1, 0, newSVOP(OP_CONST, 0, newSViv(0)))
+ : newOP($1, OPf_SPECIAL); }
| FUNC1 '(' expr ')' /* not($foo) */
{ $$ = newUNOP($1, 0, $3); }
- | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */
- { $$ = pmruntime($1, $3, 1); }
+ | PMFUNC /* m//, s///, qr//, tr/// */
+ {
+ if ( $1->op_type != OP_TRANS
+ && $1->op_type != OP_TRANSR
+ && (((PMOP*)$1)->op_pmflags & PMf_HAS_CV))
+ {
+ $<ival>$ = start_subparse(FALSE, CVf_ANON);
+ SAVEFREESV(PL_compcv);
+ } else
+ $<ival>$ = 0;
+ }
+ '(' listexpr ')'
+ { $$ = pmruntime($1, $4, 1, $<ival>2); }
| WORD
| listop
+ | YADAYADA
+ {
+ $$ = newLISTOP(OP_DIE, 0, newOP(OP_PUSHMARK, 0),
+ newSVOP(OP_CONST, 0, newSVpvs("Unimplemented")));
+ }
+ | PLUGEXPR
;
/* "my" declarations, with optional attributes */
{ $$ = sawparens($2); }
| '(' ')'
{ $$ = sawparens(newNULLLIST()); }
+
| scalar %prec '('
{ $$ = $1; }
| hsh %prec '('
;
/* Basic list expressions */
-listexpr: /* NULL */ %prec PREC_LOW
- { $$ = Nullop; }
- | argexpr %prec PREC_LOW
+optlistexpr: /* NULL */ %prec PREC_LOW
+ { $$ = (OP*)NULL; }
+ | listexpr %prec PREC_LOW
{ $$ = $1; }
;
-listexprcom: /* NULL */
- { $$ = Nullop; }
+optexpr: /* NULL */
+ { $$ = (OP*)NULL; }
| expr
{ $$ = $1; }
- | expr ','
- { $$ = $1; }
;
/* A little bit of trickery to make "for my $foo (@bar)" actually be
lexical */
my_scalar: scalar
- { PL_in_my = 0; $$ = my($1); }
+ { parser->in_my = 0; $$ = my($1); }
;
amper : '&' indirob
;
ary : '@' indirob
- { $$ = newAVREF($2); }
+ { $$ = newAVREF($2);
+ if ($$) $$->op_private |= $1;
+ }
;
hsh : '%' indirob
- { $$ = newHVREF($2); }
+ { $$ = newHVREF($2);
+ if ($$) $$->op_private |= $1;
+ }
;
arylen : DOLSHARP indirob
{ $$ = newAVREF($2); }
+ | term ARROW DOLSHARP '*'
+ { $$ = newAVREF($1); }
;
star : '*' indirob
{ $$ = newGVREF(0,$2); }
;
+sliceme : ary
+ | term ARROW '@'
+ { $$ = newAVREF($1); }
+ ;
+
+kvslice : hsh
+ | term ARROW '%'
+ { $$ = newHVREF($1); }
+ ;
+
+gelem : star
+ | term ARROW '*'
+ { $$ = newGVREF(0,$1); }
+ ;
+
/* Indirect objects */
indirob : WORD
{ $$ = scalar($1); }
| scalar %prec PREC_LOW
- { $$ = scalar($1); }
+ { $$ = scalar($1); }
| block
- { $$ = scope($1); }
+ { $$ = op_scope($1); }
| PRIVATEREF
{ $$ = $1; }
https://perl5.git.perl.org / perl5.git / blobdiff