/* 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.
%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
-
-%type <i_tkval> lpar_or_qw
+%token <i_tkval> LOCAL MY REQUIRE
+%token <i_tkval> COLONATTR FORMLBRACK FORMRBRACK
%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 labfullstmt barestmt block mblock else
%type <opval> expr term subscripted scalar ary hsh arylen star amper sideff
%type <opval> listexpr nexpr texpr iexpr mexpr mnexpr miexpr
%type <opval> optlistexpr optexpr indirob listop method
-%type <opval> formname subname proto subbody cont my_scalar
+%type <opval> formname subname proto subbody cont my_scalar formblock
%type <opval> subattrlist myattrlist myattrterm myterm
%type <opval> termbinop termunop anonymous termdo
+%type <opval> formstmtseq formline formarg
%nonassoc <i_tkval> PREC_LOW
%nonassoc LOOPEX
}
;
-remember: /* NULL */ /* start a full lexical scope */
- { $$ = block_start(TRUE); }
+/* format body */
+formblock: '=' remember ';' FORMRBRACK formstmtseq ';' '.'
+ { if (PL_parser->copline > (line_t)IVAL($1))
+ PL_parser->copline = (line_t)IVAL($1);
+ $$ = block_end($2, $5);
+ TOKEN_GETMAD($1,$$,'{');
+ TOKEN_GETMAD($7,$$,'}');
+ }
;
-mydefsv: /* NULL */ /* lexicalize $_ */
- { $$ = (I32) Perl_allocmy(aTHX_ STR_WITH_LEN("$_"), 0); }
+remember: /* NULL */ /* start a full lexical scope */
+ { $$ = block_start(TRUE); }
;
mblock : '{' mremember stmtseq '}'
}
;
+/* 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
{
labfullstmt: LABEL barestmt
{
- $$ = newSTATEOP(0, PVAL($1), $2);
+ $$ = newSTATEOP(SVf_UTF8
+ * PVAL($1)[strlen(PVAL($1))+1],
+ PVAL($1), $2);
TOKEN_GETMAD($1,
$2 ? cLISTOPx($$)->op_first : $$, 'L');
}
| LABEL labfullstmt
{
- $$ = newSTATEOP(0, PVAL($1), $2);
+ $$ = newSTATEOP(SVf_UTF8
+ * PVAL($1)[strlen(PVAL($1))+1],
+ PVAL($1), $2);
TOKEN_GETMAD($1, cLISTOPx($$)->op_first, 'L');
}
;
$$ = 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(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 subbody
{
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);
+ ;
$$ = (OP*)NULL;
#endif
+ intro_my();
}
| PACKAGE WORD WORD ';'
{
$$ = (OP*)NULL;
#endif
}
- | IF lpar_or_qw remember mexpr ')' mblock else
+ | IF '(' remember mexpr ')' mblock else
{
$$ = block_end($3,
newCONDOP(0, $4, op_scope($6), $7));
TOKEN_GETMAD($5,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | UNLESS lpar_or_qw remember miexpr ')' mblock else
+ | UNLESS '(' remember miexpr ')' mblock else
{
$$ = block_end($3,
newCONDOP(0, $4, op_scope($6), $7));
TOKEN_GETMAD($5,$$,')');
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);
$$ = block_end($3,
- newGIVENOP($5, op_scope($7), (PADOFFSET)$4));
+ newGIVENOP($4, op_scope($6),
+ offset == NOT_IN_PAD
+ || PAD_COMPNAME_FLAGS_isOUR(offset)
+ ? 0
+ : offset));
PL_parser->copline = (line_t)IVAL($1);
}
- | WHEN lpar_or_qw remember mexpr ')' mblock
+ | WHEN '(' remember mexpr ')' mblock
{ $$ = block_end($3, newWHENOP($4, op_scope($6))); }
| DEFAULT block
{ $$ = newWHENOP(0, op_scope($2)); }
- | WHILE lpar_or_qw remember texpr ')' mintro mblock cont
+ | WHILE '(' remember texpr ')' mintro mblock cont
{
$$ = 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,
op_lvalue($2, OP_ENTERLOOP), $5, $7, $8));
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));
}
| 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
{ $$ = (OP*)NULL; }
$$ = 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),
;
/* 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);
- $$ = $1; }
+subname : WORD
+ | PRIVATEREF
;
/* Subroutine prototype */
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($5,$$,')');
}
- | term ARROW method lpar_or_qw optexpr ')' /* $foo->bar(list) */
+ | term ARROW method '(' optexpr ')' /* $foo->bar(list) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, scalar($1), $5),
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 */
{ $$ = newLOGOP(OP_AND, 0, $1, $3);
{ $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($2));
TOKEN_GETMAD($1,$$,'D');
}
- | DO WORD lpar_or_qw ')' /* do somesub() */
+ | DO subname '(' ')' /* do somesub() */
{ $$ = newUNOP(OP_ENTERSUB,
OPf_SPECIAL|OPf_STACKED,
op_prepend_elem(OP_LIST,
TOKEN_GETMAD($3,$$,'(');
TOKEN_GETMAD($4,$$,')');
}
- | DO WORD lpar_or_qw expr ')' /* do somesub(@args) */
+ | DO subname '(' expr ')' /* do somesub(@args) */
{ $$ = newUNOP(OP_ENTERSUB,
OPf_SPECIAL|OPf_STACKED,
op_append_elem(OP_LIST,
TOKEN_GETMAD($3,$$,'(');
TOKEN_GETMAD($5,$$,')');
}
- | DO scalar lpar_or_qw ')' /* do $subref () */
+ | DO scalar '(' ')' /* do $subref () */
{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
op_prepend_elem(OP_LIST,
scalar(newCVREF(0,scalar($2))), (OP*)NULL)); dep();
TOKEN_GETMAD($3,$$,'(');
TOKEN_GETMAD($4,$$,')');
}
- | DO scalar lpar_or_qw expr ')' /* do $subref (@args) */
+ | DO scalar '(' expr ')' /* do $subref (@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
op_prepend_elem(OP_LIST,
$4,
{ $$ = $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) */
{
$$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, $3, scalar($1)));
}
token_getmad($2,op,'(');
token_getmad($4,op,')');
- })
+ });
}
- | NOAMP WORD optlistexpr /* foo(@args) */
+ | NOAMP subname optlistexpr /* foo @args (no parens) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, $3, scalar($2)));
TOKEN_GETMAD($1,$$,'o');
TOKEN_GETMAD($2,$$,'(');
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 '(' listexpr ')' /* 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
{ $$ = localize($2,IVAL($1));
{ $$ = $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
https://perl5.git.perl.org / perl5.git / blobdiff