%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> FUNC0OP FUNC0SUB UNIOPSUB LSTOPSUB
%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 <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> sliceme kvslice gelem
%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 optsubbody cont my_scalar formblock
%type <opval> subattrlist myattrlist myattrterm myterm
-%type <opval> termbinop termunop anonymous termdo
+%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> '('
}
;
-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
{
- $$ = newSTATEOP(SvUTF8(((SVOP*)$1)->op_sv),
- savepv(SvPVX(((SVOP*)$1)->op_sv)), $2);
+ $$ = newSTATEOP(SVf_UTF8
+ * PVAL($1)[strlen(PVAL($1))+1],
+ PVAL($1), $2);
TOKEN_GETMAD($1,
$2 ? cLISTOPx($$)->op_first : $$, 'L');
}
| LABEL labfullstmt
{
- $$ = newSTATEOP(SvUTF8(((SVOP*)$1)->op_sv),
- savepv(SvPVX(((SVOP*)$1)->op_sv)), $2);
+ $$ = 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 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);
+ ;
$$ = (OP*)NULL;
#endif
+ intro_my();
}
| PACKAGE WORD WORD ';'
{
TOKEN_GETMAD($5,$$,')');
PL_parser->copline = (line_t)IVAL($1);
}
- | GIVEN '(' remember mydefsv mexpr ')' mblock
+ | GIVEN '(' remember mexpr ')' mblock
{
+ const PADOFFSET offset = pad_findmy_pvs("$_", 0);
$$ = block_end($3,
- newGIVENOP($5, op_scope($7), (PADOFFSET)$4));
+ newGIVENOP($4, op_scope($6),
+ offset == NOT_IN_PAD
+ || PAD_COMPNAME_FLAGS_isOUR(offset)
+ ? 0
+ : offset));
PL_parser->copline = (line_t)IVAL($1);
}
| WHEN '(' remember mexpr ')' mblock
}
| PACKAGE WORD WORD '{' remember
{
- int save_3_latefree = $3->op_latefree;
- $3->op_latefree = 1;
package($3);
- $3->op_latefree = save_3_latefree;
if ($2) {
- int save_2_latefree = $2->op_latefree;
- $2->op_latefree = 1;
package_version($2);
- $2->op_latefree = save_2_latefree;
}
}
stmtseq '}'
/* a block is a loop that happens once */
$$ = 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; }
;
/* 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; }
| ';' { $$ = IF_MAD(
newOP(OP_NULL,0),
(OP*)NULL
;
/* Some kind of subscripted expression */
-subscripted: star '{' expr ';' '}' /* *main::{something} */
+subscripted: gelem '{' expr ';' '}' /* *main::{something} */
/* In this and all the hash accessors, ';' is
* provided by the tokeniser */
{ $$ = newBINOP(OP_GELEM, 0, $1, scalar($3));
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 */
{ $$ = newLOGOP(OP_AND, 0, $1, $3);
op_lvalue(scalar($1), OP_POSTDEC));
TOKEN_GETMAD($2,$$,'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 */
{ $$ = newUNOP(OP_PREINC, 0,
op_lvalue(scalar($2), OP_PREINC));
TOKEN_GETMAD($2,$$,';');
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,$$,'o');
{ $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($2));
TOKEN_GETMAD($1,$$,'D');
}
- | DO WORD '(' ')' /* do somesub() */
- { $$ = 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,$$,')');
- }
- | DO WORD '(' expr ')' /* do somesub(@args) */
- { $$ = 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,$$,')');
- }
- | DO scalar '(' ')' /* do $subref () */
- { $$ = 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,$$,')');
- }
- | DO scalar '(' expr ')' /* do $subref (@args) */
- { $$ = 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,$$,')');
- }
-
;
term : termbinop
{ $$ = 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 '(' ')' /* &foo() */
+ | amper '(' ')' /* &foo() or foo() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1));
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($3,$$,')');
}
- | amper '(' expr ')' /* &foo(@args) */
+ | amper '(' expr ')' /* &foo(@args) or foo(@args) */
{
$$ = 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');
}
+ | 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) */
{ $$ = newOP(IVAL($1), OPf_SPECIAL);
PL_hints |= HINT_BLOCK_SCOPE;
TOKEN_GETMAD($2,$$,'(');
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));
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); }
https://perl5.git.perl.org / perl5.git / blobdiff