/* perly.y
*
* Copyright (c) 1991-2002, 2003, 2004, 2005, 2006 Larry Wall
- * Copyright (c) 2007, 2008 by Larry Wall and others
+ * 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.
#endif
}
-%token <ival> GRAMPROG GRAMBLOCK GRAMFULLSTMT GRAMSTMTSEQ
+%token <ival> GRAMPROG GRAMEXPR GRAMBLOCK GRAMBARESTMT GRAMFULLSTMT GRAMSTMTSEQ
-%token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';'
+%token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';' '=' '.'
%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF QWLIST
-%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
+%token <opval> FUNC0OP FUNC0SUB UNIOPSUB LSTOPSUB
%token <opval> PLUGEXPR PLUGSTMT
%token <p_tkval> LABEL
%token <i_tkval> FORMAT SUB ANONSUB PACKAGE USE
%token <i_tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP
%token <i_tkval> RELOP EQOP MULOP ADDOP
%token <i_tkval> DOLSHARP DO HASHBRACK NOAMP
-%token <i_tkval> LOCAL MY MYSUB REQUIRE
-%token <i_tkval> COLONATTR
+%token <i_tkval> LOCAL MY REQUIRE
+%token <i_tkval> COLONATTR FORMLBRACK FORMRBRACK
-%type <i_tkval> lpar_or_qw
-
-%type <ival> grammar prog progstart remember mremember
+%type <ival> grammar remember mremember
%type <ival> startsub startanonsub startformsub
/* FIXME for MAD - are these two ival? */
-%type <ival> mydefsv mintro
+%type <ival> mintro
-%type <opval> stmtseq fullstmt barestmt block mblock else
+%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> 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> termbinop termunop anonymous termdo
-%type <p_tkval> label
+%type <opval> realsubbody subsignature termbinop termunop anonymous termdo
+%type <opval> formstmtseq formline formarg
%nonassoc <i_tkval> PREC_LOW
%nonassoc LOOPEX
%left <i_tkval> MATCHOP
%right <i_tkval> '!' '~' UMINUS REFGEN
%right <i_tkval> POWOP
-%nonassoc <i_tkval> PREINC PREDEC POSTINC POSTDEC
+%nonassoc <i_tkval> PREINC PREDEC POSTINC POSTDEC POSTJOIN
%left <i_tkval> ARROW
%nonassoc <i_tkval> ')'
%left <i_tkval> '('
%% /* RULES */
/* Top-level choice of what kind of thing yyparse was called to parse */
-grammar : GRAMPROG prog
- { $$ = $2; }
+grammar : GRAMPROG
+ {
+ PL_parser->expect = XSTATE;
+ }
+ remember stmtseq
+ {
+ newPROG(block_end($3,$4));
+ $$ = 0;
+ }
+ | GRAMEXPR
+ {
+ parser->expect = XTERM;
+ }
+ optexpr
+ {
+ PL_eval_root = $3;
+ $$ = 0;
+ }
| GRAMBLOCK
{
parser->expect = XBLOCK;
yyunlex();
parser->yychar = YYEOF;
}
+ | GRAMBARESTMT
+ {
+ parser->expect = XSTATE;
+ }
+ barestmt
+ {
+ PL_pad_reset_pending = TRUE;
+ PL_eval_root = $3;
+ $$ = 0;
+ yyunlex();
+ parser->yychar = YYEOF;
+ }
| GRAMFULLSTMT
{
parser->expect = XSTATE;
}
;
-/* The whole program */
-prog : progstart
- /*CONTINUED*/ stmtseq
- { $$ = $1; newPROG(block_end($1,$2)); }
- ;
-
/* An ordinary block */
block : '{' remember stmtseq '}'
{ if (PL_parser->copline > (line_t)IVAL($1))
}
;
-remember: /* NULL */ /* start a full lexical scope */
- { $$ = block_start(TRUE); }
- ;
-
-mydefsv: /* NULL */ /* lexicalize $_ */
- { $$ = (I32) Perl_allocmy(aTHX_ STR_WITH_LEN("$_"), 0); }
+/* format body */
+formblock: '=' remember ';' FORMRBRACK formstmtseq ';' '.'
+ { if (PL_parser->copline > (line_t)IVAL($1))
+ PL_parser->copline = (line_t)IVAL($1);
+ $$ = block_end($2, $5);
+ TOKEN_GETMAD($1,$$,'{');
+ TOKEN_GETMAD($7,$$,'}');
+ }
;
-progstart:
- {
- PL_parser->expect = XSTATE; $$ = block_start(TRUE);
- }
+remember: /* NULL */ /* start a full lexical scope */
+ { $$ = block_start(TRUE); }
;
-
mblock : '{' mremember stmtseq '}'
{ if (PL_parser->copline > (line_t)IVAL($1))
PL_parser->copline = (line_t)IVAL($1);
}
;
-/* A statement in the program, including optional label */
-fullstmt: label barestmt
+/* 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;
+ }
+ ;
+
+/* A statement in the program, including optional labels */
+fullstmt: barestmt
{
- if (PVAL($1) || $2) {
- $$ = newSTATEOP(0, PVAL($1), $2);
- TOKEN_GETMAD($1,
- $2 ? cLISTOPx($$)->op_first : $$, 'L');
+ if($1) {
+ $$ = newSTATEOP(0, NULL, $1);
} else {
- $$ = IF_MAD(newOP(OP_NULL, 0), $2);
+ $$ = IF_MAD(newOP(OP_NULL, 0), NULL);
}
}
+ | labfullstmt
+ { $$ = $1; }
+ ;
+
+labfullstmt: LABEL barestmt
+ {
+ $$ = newSTATEOP(SVf_UTF8
+ * PVAL($1)[strlen(PVAL($1))+1],
+ PVAL($1), $2);
+ TOKEN_GETMAD($1,
+ $2 ? cLISTOPx($$)->op_first : $$, 'L');
+ }
+ | LABEL labfullstmt
+ {
+ $$ = newSTATEOP(SVf_UTF8
+ * PVAL($1)[strlen(PVAL($1))+1],
+ PVAL($1), $2);
+ TOKEN_GETMAD($1, cLISTOPx($$)->op_first, 'L');
+ }
;
/* A bare statement, lacking label and other aspects of state op */
$$ = newOP(OP_NULL,0);
TOKEN_GETMAD($1,$$,'p');
}
- | FORMAT startformsub formname block
+ | FORMAT startformsub formname formblock
{
CV *fmtcv = PL_compcv;
- SvREFCNT_inc_simple_void(PL_compcv);
#ifdef MAD
$$ = newFORM($2, $3, $4);
prepend_madprops($1->tk_mad, $$, 'F');
newFORM($2, $3, $4);
$$ = (OP*)NULL;
#endif
- if (CvOUTSIDE(fmtcv) && !CvUNIQUE(CvOUTSIDE(fmtcv))) {
+ if (CvOUTSIDE(fmtcv) && !CvEVAL(CvOUTSIDE(fmtcv))) {
SvREFCNT_inc_simple_void(fmtcv);
- pad_add_anon((SV*)fmtcv, OP_NULL);
+ pad_add_anon(fmtcv, OP_NULL);
}
}
- | SUB startsub subname proto subattrlist subbody
+ | SUB subname startsub
+ {
+ if ($2->op_type == OP_CONST) {
+ const char *const name =
+ SvPV_nolen_const(((SVOP*)$2)->op_sv);
+ if (strEQ(name, "BEGIN") || strEQ(name, "END")
+ || strEQ(name, "INIT") || strEQ(name, "CHECK")
+ || strEQ(name, "UNITCHECK"))
+ CvSPECIAL_on(PL_compcv);
+ }
+ else
+ /* State subs inside anonymous subs need to be
+ clonable themselves. */
+ if (CvANON(CvOUTSIDE(PL_compcv))
+ || CvCLONE(CvOUTSIDE(PL_compcv))
+ || !PadnameIsSTATE(PadlistNAMESARRAY(CvPADLIST(
+ CvOUTSIDE(PL_compcv)
+ ))[$2->op_targ]))
+ CvCLONE_on(PL_compcv);
+ PL_parser->in_my = 0;
+ PL_parser->in_my_stash = NULL;
+ }
+ proto subattrlist optsubbody
{
SvREFCNT_inc_simple_void(PL_compcv);
#ifdef MAD
{
OP* o = newSVOP(OP_ANONCODE, 0,
- (SV*)newATTRSUB($2, $3, $4, $5, $6));
+ (SV*)(
+#endif
+ $2->op_type == OP_CONST
+ ? newATTRSUB($3, $2, $5, $6, $7)
+ : newMYSUB($3, $2, $5, $6, $7)
+#ifdef MAD
+ ));
$$ = newOP(OP_NULL,0);
op_getmad(o,$$,'&');
- op_getmad($3,$$,'n');
- op_getmad($4,$$,'s');
- op_getmad($5,$$,'a');
+ op_getmad($2,$$,'n');
+ op_getmad($5,$$,'s');
+ op_getmad($6,$$,'a');
token_getmad($1,$$,'d');
- append_madprops($6->op_madprop, $$, 0);
- $6->op_madprop = 0;
+ append_madprops($7->op_madprop, $$, 0);
+ $7->op_madprop = 0;
}
#else
- newATTRSUB($2, $3, $4, $5, $6);
- $$ = (OP*)NULL;
-#endif
- }
- | MYSUB startsub subname proto subattrlist subbody
- {
- /* Unimplemented "my sub foo { }" */
- SvREFCNT_inc_simple_void(PL_compcv);
-#ifdef MAD
- $$ = newMYSUB($2, $3, $4, $5, $6);
- token_getmad($1,$$,'d');
-#else
- newMYSUB($2, $3, $4, $5, $6);
+ ;
$$ = (OP*)NULL;
#endif
+ intro_my();
}
| PACKAGE WORD WORD ';'
{
}
| USE startsub
{ CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
- WORD WORD listexpr ';'
+ WORD WORD optlistexpr ';'
{
SvREFCNT_inc_simple_void(PL_compcv);
#ifdef MAD
$$ = (OP*)NULL;
#endif
}
- | IF lpar_or_qw remember mexpr ')' mblock else
+ | IF '(' remember mexpr ')' mblock else
{
- $$ = block_end($3, newCONDOP(0, $4, scope($6), $7));
+ $$ = block_end($3,
+ newCONDOP(0, $4, op_scope($6), $7));
TOKEN_GETMAD($1,$$,'I');
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($5,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | UNLESS lpar_or_qw remember miexpr ')' mblock else
+ | UNLESS '(' remember miexpr ')' mblock else
{
- $$ = block_end($3, newCONDOP(0, $4, scope($6), $7));
+ $$ = block_end($3,
+ newCONDOP(0, $4, op_scope($6), $7));
TOKEN_GETMAD($1,$$,'I');
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($5,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | GIVEN lpar_or_qw remember mydefsv mexpr ')' mblock
+ | GIVEN '(' remember mexpr ')' mblock
{
+ const PADOFFSET offset = pad_findmy_pvs("$_", 0);
$$ = block_end($3,
- newGIVENOP($5, scope($7), (PADOFFSET)$4));
+ newGIVENOP($4, op_scope($6),
+ offset == NOT_IN_PAD
+ || PAD_COMPNAME_FLAGS_isOUR(offset)
+ ? 0
+ : offset));
PL_parser->copline = (line_t)IVAL($1);
}
- | WHEN lpar_or_qw remember mexpr ')' mblock
- { $$ = block_end($3, newWHENOP($4, scope($6))); }
+ | WHEN '(' remember mexpr ')' mblock
+ { $$ = block_end($3, newWHENOP($4, op_scope($6))); }
| DEFAULT block
- { $$ = newWHENOP(0, scope($2)); }
- | WHILE lpar_or_qw remember texpr ')' mintro mblock cont
+ { $$ = newWHENOP(0, op_scope($2)); }
+ | WHILE '(' remember texpr ')' mintro mblock cont
{
$$ = block_end($3,
newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
TOKEN_GETMAD($5,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | UNTIL lpar_or_qw remember iexpr ')' mintro mblock cont
+ | UNTIL '(' remember iexpr ')' mintro mblock cont
{
$$ = block_end($3,
newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
TOKEN_GETMAD($5,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | FOR lpar_or_qw remember mnexpr ';' texpr ';' mintro mnexpr ')'
+ | FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')'
mblock
{
OP *initop = IF_MAD($4 ? $4 : newOP(OP_NULL, 0), $4);
TOKEN_GETMAD($10,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | FOR MY remember my_scalar lpar_or_qw mexpr ')' mblock cont
+ | FOR MY remember my_scalar '(' mexpr ')' mblock cont
{
$$ = block_end($3, newFOROP(0, $4, $6, $8, $9));
TOKEN_GETMAD($1,$$,'W');
TOKEN_GETMAD($7,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | FOR scalar lpar_or_qw remember mexpr ')' mblock cont
+ | FOR scalar '(' remember mexpr ')' mblock cont
{
$$ = block_end($4, newFOROP(0,
- mod($2, OP_ENTERLOOP), $5, $7, $8));
+ op_lvalue($2, OP_ENTERLOOP), $5, $7, $8));
TOKEN_GETMAD($1,$$,'W');
TOKEN_GETMAD($3,$$,'(');
TOKEN_GETMAD($6,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | FOR lpar_or_qw remember mexpr ')' mblock cont
+ | FOR '(' remember mexpr ')' mblock cont
{
$$ = block_end($3,
newFOROP(0, (OP*)NULL, $4, $6, $7));
/* a block is a loop that happens once */
$$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
(OP*)NULL, $1, $2, 0);
- PL_parser->copline = NOLINE;
}
| PACKAGE WORD WORD '{' remember
{
- int save_3_latefree = $3->op_latefree;
- $3->op_latefree = 1;
package($3);
- $3->op_latefree = save_3_latefree;
if ($2) {
- int save_2_latefree = $2->op_latefree;
- $2->op_latefree = 1;
package_version($2);
- $2->op_latefree = save_2_latefree;
}
}
stmtseq '}'
/* a block is a loop that happens once */
$$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
(OP*)NULL, block_end($5, $7), (OP*)NULL, 0);
- op_free($3);
- if ($2)
- op_free($2);
TOKEN_GETMAD($4,$$,'{');
TOKEN_GETMAD($8,$$,'}');
if (PL_parser->copline > (line_t)IVAL($4))
}
;
+/* Format line */
+formline: THING formarg
+ { OP *list;
+ if ($2) {
+ OP *term = $2;
+ DO_MAD(term = newUNOP(OP_NULL, 0, term));
+ list = op_append_elem(OP_LIST, $1, term);
+ }
+ else {
+#ifdef MAD
+ OP *op = newNULLLIST();
+ list = op_append_elem(OP_LIST, $1, op);
+#else
+ list = $1;
+#endif
+ }
+ if (PL_parser->copline == NOLINE)
+ PL_parser->copline = CopLINE(PL_curcop)-1;
+ else PL_parser->copline--;
+ $$ = 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
{ $$ = (OP*)NULL; }
PL_parser->copline = (line_t)IVAL($2);
}
| expr WHEN expr
- { $$ = newWHENOP($3, scope($1)); }
+ { $$ = newWHENOP($3, op_scope($1)); }
;
/* else and elsif blocks */
else : /* NULL */
{ $$ = (OP*)NULL; }
| ELSE mblock
- { ($2)->op_flags |= OPf_PARENS; $$ = scope($2);
+ {
+ ($2)->op_flags |= OPf_PARENS;
+ $$ = op_scope($2);
TOKEN_GETMAD($1,$$,'o');
}
- | ELSIF lpar_or_qw mexpr ')' mblock else
+ | ELSIF '(' mexpr ')' mblock else
{ PL_parser->copline = (line_t)IVAL($1);
- $$ = newCONDOP(0, newSTATEOP(OPf_SPECIAL,NULL,$3), scope($5), $6);
- PL_hints |= HINT_BLOCK_SCOPE;
+ $$ = newCONDOP(0,
+ newSTATEOP(OPf_SPECIAL,NULL,$3),
+ op_scope($5), $6);
+ PL_hints |= HINT_BLOCK_SCOPE;
TOKEN_GETMAD($1,$$,'I');
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($4,$$,')');
cont : /* NULL */
{ $$ = (OP*)NULL; }
| CONTINUE block
- { $$ = scope($2);
+ {
+ $$ = op_scope($2);
TOKEN_GETMAD($1,$$,'o');
}
;
{ $$ = $1; intro_my(); }
;
-/* Optional "MAIN:"-style loop labels */
-label : /* empty */
- {
-#ifdef MAD
- YYSTYPE tmplval;
- tmplval.pval = NULL;
- $$ = newTOKEN(OP_NULL, tmplval, 0);
-#else
- $$ = NULL;
-#endif
- }
- | LABEL
- ;
-
formname: WORD { $$ = $1; }
| /* NULL */ { $$ = (OP*)NULL; }
;
;
/* Name of a subroutine - must be a bareword, could be special */
-subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv);
- if (strEQ(name, "BEGIN") || strEQ(name, "END")
- || strEQ(name, "INIT") || strEQ(name, "CHECK")
- || strEQ(name, "UNITCHECK"))
- CvSPECIAL_on(PL_compcv);
- $$ = $1; }
+subname : WORD
+ | PRIVATEREF
;
/* Subroutine prototype */
}
;
-/* Subroutine body - either null or a block */
-subbody : block { $$ = $1; }
+/* Optional subroutine signature */
+subsignature: /* NULL */ { $$ = (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();
+ }
+ ')'
+ {
+ $$ = op_append_list(OP_LINESEQ, $<opval>2,
+ newSTATEOP(0, NULL, sawparens(newNULLLIST())));
+ PL_parser->expect = XBLOCK;
+ }
+ ;
+
+/* Subroutine body - block with optional signature */
+realsubbody: remember subsignature '{' stmtseq '}'
+ {
+ if (PL_parser->copline > (line_t)IVAL($3))
+ PL_parser->copline = (line_t)IVAL($3);
+ $$ = block_end($1,
+ op_append_list(OP_LINESEQ, $2, $4));
+ TOKEN_GETMAD($3,$$,'{');
+ TOKEN_GETMAD($5,$$,'}');
+ }
+ ;
+
+/* Optional subroutine body, for named subroutine declaration */
+optsubbody: realsubbody { $$ = $1; }
| ';' { $$ = IF_MAD(
newOP(OP_NULL,0),
(OP*)NULL
{ $$ = newLOGOP(OP_DOR, 0, $1, $3);
TOKEN_GETMAD($2,$$,'o');
}
- | argexpr %prec PREC_LOW
+ | listexpr %prec PREC_LOW
;
/* Expressions are a list of terms joined by commas */
-argexpr : argexpr ','
+listexpr: listexpr ','
{
#ifdef MAD
OP* op = newNULLLIST();
$$ = $1;
#endif
}
- | argexpr ',' term
+ | listexpr ',' term
{
OP* term = $3;
DO_MAD(
;
/* List operators */
-listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */
+listop : LSTOP indirob listexpr /* map {...} @args or print $fh @args */
{ $$ = convert(IVAL($1), OPf_STACKED,
op_prepend_elem(OP_LIST, newGVREF(IVAL($1),$2), $3) );
TOKEN_GETMAD($1,$$,'o');
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($5,$$,')');
}
- | term ARROW method lpar_or_qw listexprcom ')' /* $foo->bar(list) */
+ | term ARROW method '(' optexpr ')' /* $foo->bar(list) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, scalar($1), $5),
newUNOP(OP_METHOD, 0, $3)));
TOKEN_GETMAD($2,$$,'A');
}
- | METHOD indirob listexpr /* new Class @args */
+ | METHOD indirob optlistexpr /* new Class @args */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, $2, $3),
newUNOP(OP_METHOD, 0, $1)));
}
- | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */
+ | FUNCMETH indirob '(' optexpr ')' /* method $object (@args) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, $2, $4),
TOKEN_GETMAD($3,$$,'(');
TOKEN_GETMAD($5,$$,')');
}
- | LSTOP listexpr /* print @args */
+ | LSTOP optlistexpr /* print @args */
{ $$ = convert(IVAL($1), 0, $2);
TOKEN_GETMAD($1,$$,'o');
}
- | FUNC '(' listexprcom ')' /* print (@args) */
+ | FUNC '(' optexpr ')' /* print (@args) */
{ $$ = convert(IVAL($1), 0, $3);
TOKEN_GETMAD($1,$$,'o');
TOKEN_GETMAD($2,$$,'(');
| LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */
{ SvREFCNT_inc_simple_void(PL_compcv);
$<opval>$ = newANONATTRSUB($2, 0, (OP*)NULL, $3); }
- listexpr %prec LSTOP /* ... @bar */
+ optlistexpr %prec LSTOP /* ... @bar */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, $<opval>4, $5), $1));
;
/* Some kind of subscripted expression */
-subscripted: star '{' expr ';' '}' /* *main::{something} */
+subscripted: gelem '{' expr ';' '}' /* *main::{something} */
/* In this and all the hash accessors, ';' is
* provided by the tokeniser */
{ $$ = newBINOP(OP_GELEM, 0, $1, scalar($3));
TOKEN_GETMAD($2,$$,'[');
TOKEN_GETMAD($4,$$,']');
}
- | scalar '{' expr ';' '}' /* $foo->{bar();} */
+ | scalar '{' expr ';' '}' /* $foo{bar();} */
{ $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
PL_parser->expect = XOPERATOR;
TOKEN_GETMAD($2,$$,'{');
TOKEN_GETMAD($5,$$,')');
}
- | subscripted lpar_or_qw expr ')' /* $foo->{bar}->(@args) */
+ | subscripted '(' expr ')' /* $foo->{bar}->(@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, $3,
newCVREF(0, scalar($1))));
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($4,$$,')');
}
- | subscripted lpar_or_qw ')' /* $foo->{bar}->() */
+ | subscripted '(' ')' /* $foo->{bar}->() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
newCVREF(0, scalar($1)));
TOKEN_GETMAD($2,$$,'(');
op = (UNOP*)op->op_first; /* get to flip */
op = (UNOP*)op->op_first; /* get to range */
token_getmad($2,(OP*)op,'o');
- })
+ });
}
| term ANDAND term /* $x && $y */
{ $$ = newLOGOP(OP_AND, 0, $1, $3);
}
| term POSTINC /* $x++ */
{ $$ = newUNOP(OP_POSTINC, 0,
- mod(scalar($1), OP_POSTINC));
+ op_lvalue(scalar($1), OP_POSTINC));
TOKEN_GETMAD($2,$$,'o');
}
| term POSTDEC /* $x-- */
{ $$ = newUNOP(OP_POSTDEC, 0,
- mod(scalar($1), OP_POSTDEC));
+ op_lvalue(scalar($1), OP_POSTDEC));
+ TOKEN_GETMAD($2,$$,'o');
+ }
+ | term POSTJOIN /* implicit join after interpolated ->@ */
+ { $$ = convert(OP_JOIN, 0,
+ op_append_elem(
+ OP_LIST,
+ newSVREF(scalar(
+ newSVOP(OP_CONST,0,
+ newSVpvs("\""))
+ )),
+ $1
+ ));
TOKEN_GETMAD($2,$$,'o');
}
| PREINC term /* ++$x */
{ $$ = newUNOP(OP_PREINC, 0,
- mod(scalar($2), OP_PREINC));
+ op_lvalue(scalar($2), OP_PREINC));
TOKEN_GETMAD($1,$$,'o');
}
| PREDEC term /* --$x */
{ $$ = newUNOP(OP_PREDEC, 0,
- mod(scalar($2), OP_PREDEC));
+ op_lvalue(scalar($2), OP_PREDEC));
TOKEN_GETMAD($1,$$,'o');
}
TOKEN_GETMAD($2,$$,';');
TOKEN_GETMAD($3,$$,'}');
}
- | ANONSUB startanonsub proto subattrlist block %prec '('
+ | ANONSUB startanonsub proto subattrlist realsubbody %prec '('
{ SvREFCNT_inc_simple_void(PL_compcv);
$$ = newANONATTRSUB($2, $3, $4, $5);
TOKEN_GETMAD($1,$$,'o');
TOKEN_GETMAD($1,$$,'o');
}
| DO block %prec '(' /* do { code */
- { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2));
+ { $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($2));
TOKEN_GETMAD($1,$$,'D');
}
- | DO WORD lpar_or_qw ')' /* do somesub() */
- { $$ = newUNOP(OP_ENTERSUB,
- OPf_SPECIAL|OPf_STACKED,
- op_prepend_elem(OP_LIST,
- scalar(newCVREF(
- (OPpENTERSUB_AMPER<<8),
- scalar($2)
- )),(OP*)NULL)); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($4,$$,')');
- }
- | DO WORD lpar_or_qw expr ')' /* do somesub(@args) */
- { $$ = newUNOP(OP_ENTERSUB,
- OPf_SPECIAL|OPf_STACKED,
- op_append_elem(OP_LIST,
- $4,
- scalar(newCVREF(
- (OPpENTERSUB_AMPER<<8),
- scalar($2)
- )))); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
- | DO scalar lpar_or_qw ')' /* do $subref () */
- { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
- op_prepend_elem(OP_LIST,
- scalar(newCVREF(0,scalar($2))), (OP*)NULL)); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($4,$$,')');
- }
- | DO scalar lpar_or_qw expr ')' /* do $subref (@args) */
- { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
- op_prepend_elem(OP_LIST,
- $4,
- scalar(newCVREF(0,scalar($2))))); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
-
;
term : termbinop
TOKEN_GETMAD($4,$$,':');
}
| REFGEN term /* \$x, \@y, \%z */
- { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN));
+ { $$ = newUNOP(OP_REFGEN, 0, op_lvalue($2,OP_REFGEN));
TOKEN_GETMAD($1,$$,'o');
}
| myattrterm %prec UNIOP
{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
| subscripted
{ $$ = $1; }
- | ary '[' expr ']' /* array slice */
+ | sliceme '[' expr ']' /* array slice */
{ $$ = op_prepend_elem(OP_ASLICE,
newOP(OP_PUSHMARK, 0),
newLISTOP(OP_ASLICE, 0,
list($3),
ref($1, OP_ASLICE)));
+ if ($$ && $1)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
TOKEN_GETMAD($2,$$,'[');
TOKEN_GETMAD($4,$$,']');
}
- | ary '{' expr ';' '}' /* @hash{@keys} */
+ | 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)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
+ TOKEN_GETMAD($2,$$,'[');
+ TOKEN_GETMAD($4,$$,']');
+ }
+ | sliceme '{' expr ';' '}' /* @hash{@keys} */
{ $$ = op_prepend_elem(OP_HSLICE,
newOP(OP_PUSHMARK, 0),
newLISTOP(OP_HSLICE, 0,
list($3),
ref(oopsHV($1), OP_HSLICE)));
+ if ($$ && $1)
+ $$->op_private |=
+ $1->op_private & OPpSLICEWARNING;
+ PL_parser->expect = XOPERATOR;
+ TOKEN_GETMAD($2,$$,'{');
+ TOKEN_GETMAD($4,$$,';');
+ TOKEN_GETMAD($5,$$,'}');
+ }
+ | kvslice '{' expr ';' '}' /* %hash{@keys} */
+ { $$ = 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;
PL_parser->expect = XOPERATOR;
TOKEN_GETMAD($2,$$,'{');
TOKEN_GETMAD($4,$$,';');
{ $$ = $1; }
| amper /* &foo; */
{ $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
- | amper lpar_or_qw ')' /* &foo() */
+ | amper '(' ')' /* &foo() or foo() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1));
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($3,$$,')');
}
- | amper lpar_or_qw expr ')' /* &foo(@args) */
+ | amper '(' expr ')' /* &foo(@args) or foo(@args) */
{
$$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, $3, scalar($1)));
}
token_getmad($2,op,'(');
token_getmad($4,op,')');
- })
+ });
}
- | NOAMP WORD listexpr /* foo(@args) */
+ | NOAMP subname optlistexpr /* foo @args (no parens) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, $3, scalar($2)));
TOKEN_GETMAD($1,$$,'o');
}
+ | term ARROW '$' '*'
+ { $$ = newSVREF($1);
+ TOKEN_GETMAD($3,$$,'$');
+ }
+ | term ARROW '@' '*'
+ { $$ = newAVREF($1);
+ TOKEN_GETMAD($3,$$,'@');
+ }
+ | term ARROW '%' '*'
+ { $$ = newHVREF($1);
+ TOKEN_GETMAD($3,$$,'%');
+ }
+ | term ARROW '&' '*'
+ { $$ = newUNOP(OP_ENTERSUB, 0,
+ scalar(newCVREF(IVAL($3),$1)));
+ TOKEN_GETMAD($3,$$,'&');
+ }
+ | term ARROW '*' '*' %prec '('
+ { $$ = newGVREF(0,$1);
+ TOKEN_GETMAD($3,$$,'*');
+ }
| LOOPEX /* loop exiting command (goto, last, dump, etc) */
{ $$ = newOP(IVAL($1), OPf_SPECIAL);
PL_hints |= HINT_BLOCK_SCOPE;
{ $$ = newLOOPEX(IVAL($1),$2);
TOKEN_GETMAD($1,$$,'o');
}
- | NOTOP argexpr /* not $foo */
+ | NOTOP listexpr /* not $foo */
{ $$ = newUNOP(OP_NOT, 0, scalar($2));
TOKEN_GETMAD($1,$$,'o');
}
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($3,$$,')');
}
+ | FUNC0OP /* Same as above, but op created in toke.c */
+ { $$ = $1; }
+ | FUNC0OP '(' ')'
+ { $$ = $1;
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($3,$$,')');
+ }
| FUNC0SUB /* Sub treated as nullop */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
scalar($1)); }
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($4,$$,')');
}
- | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */
- { $$ = pmruntime($1, $3, 1);
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($4,$$,')');
+ | PMFUNC /* m//, s///, qr//, tr/// */
+ {
+ if ( $1->op_type != OP_TRANS
+ && $1->op_type != OP_TRANSR
+ && (((PMOP*)$1)->op_pmflags & PMf_HAS_CV))
+ {
+ $<ival>$ = start_subparse(FALSE, CVf_ANON);
+ SAVEFREESV(PL_compcv);
+ } else
+ $<ival>$ = 0;
+ }
+ '(' listexpr ')'
+ { $$ = pmruntime($1, $4, 1, $<ival>2);
+ TOKEN_GETMAD($3,$$,'(');
+ TOKEN_GETMAD($5,$$,')');
}
| WORD
| listop
token_getmad($1,$$,'d');
append_madprops($3->op_madprop, $$, 'a');
$3->op_madprop = 0;
- )
+ );
}
| MY myterm
{ $$ = localize($2,IVAL($1));
;
/* Basic list expressions */
-listexpr: /* NULL */ %prec PREC_LOW
+optlistexpr: /* NULL */ %prec PREC_LOW
{ $$ = (OP*)NULL; }
- | argexpr %prec PREC_LOW
+ | listexpr %prec PREC_LOW
{ $$ = $1; }
;
-listexprcom: /* NULL */
+optexpr: /* NULL */
{ $$ = (OP*)NULL; }
| expr
{ $$ = $1; }
;
-lpar_or_qw: '('
- { $$ = $1; }
- | QWLIST
- { munge_qwlist_to_paren_list($1); }
- '('
- { $$ = $3; }
- ;
-
/* A little bit of trickery to make "for my $foo (@bar)" actually be
lexical */
my_scalar: scalar
ary : '@' indirob
{ $$ = newAVREF($2);
+ if ($$) $$->op_private |= IVAL($1);
TOKEN_GETMAD($1,$$,'@');
}
;
hsh : '%' indirob
{ $$ = newHVREF($2);
+ if ($$) $$->op_private |= IVAL($1);
TOKEN_GETMAD($1,$$,'%');
}
;
{ $$ = newAVREF($2);
TOKEN_GETMAD($1,$$,'l');
}
+ | term ARROW DOLSHARP '*'
+ { $$ = newAVREF($1);
+ TOKEN_GETMAD($3,$$,'l');
+ }
;
star : '*' indirob
}
;
+sliceme : ary
+ | term ARROW '@'
+ { $$ = newAVREF($1);
+ TOKEN_GETMAD($3,$$,'@');
+ }
+ ;
+
+kvslice : hsh
+ | term ARROW '%'
+ { $$ = newHVREF($1);
+ TOKEN_GETMAD($3,$$,'@');
+ }
+ ;
+
+gelem : star
+ | term ARROW '*'
+ { $$ = newGVREF(0,$1);
+ TOKEN_GETMAD($3,$$,'*');
+ }
+ ;
+
/* Indirect objects */
indirob : WORD
{ $$ = scalar($1); }
| scalar %prec PREC_LOW
{ $$ = scalar($1); }
| block
- { $$ = scope($1); }
+ { $$ = op_scope($1); }
| PRIVATEREF
{ $$ = $1; }
https://perl5.git.perl.org / perl5.git / blobdiff