mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
735 lines
17 KiB
Plaintext
735 lines
17 KiB
Plaintext
/* perly.y
|
|
*
|
|
* Copyright (c) 1991-2000, 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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* '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"
|
|
|
|
#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(pTHXo_ void *ptr);
|
|
|
|
%}
|
|
|
|
%start prog
|
|
|
|
%{
|
|
#if 0 /* get this from perly.h instead */
|
|
%}
|
|
|
|
%union {
|
|
I32 ival;
|
|
char *pval;
|
|
OP *opval;
|
|
GV *gvval;
|
|
}
|
|
|
|
%{
|
|
#endif /* 0 */
|
|
|
|
#ifdef USE_PURE_BISON
|
|
#define YYLEX_PARAM (&yychar)
|
|
#endif
|
|
|
|
%}
|
|
|
|
%token <ival> '{'
|
|
|
|
%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF
|
|
%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
|
|
%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> FUNC0 FUNC1 FUNC UNIOP LSTOP
|
|
%token <ival> RELOP EQOP MULOP ADDOP
|
|
%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
|
|
|
|
%nonassoc PREC_LOW
|
|
%nonassoc LOOPEX
|
|
|
|
%left <ival> OROP
|
|
%left ANDOP
|
|
%right NOTOP
|
|
%nonassoc LSTOP LSTOPSUB
|
|
%left ','
|
|
%right <ival> ASSIGNOP
|
|
%right '?' ':'
|
|
%nonassoc DOTDOT
|
|
%left OROR
|
|
%left ANDAND
|
|
%left <ival> BITOROP
|
|
%left <ival> BITANDOP
|
|
%nonassoc EQOP
|
|
%nonassoc RELOP
|
|
%nonassoc UNIOP UNIOPSUB
|
|
%left <ival> SHIFTOP
|
|
%left ADDOP
|
|
%left MULOP
|
|
%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 = (PL_debug & 1);
|
|
#endif
|
|
PL_expect = XSTATE;
|
|
}
|
|
/*CONTINUED*/ lineseq
|
|
{ newPROG($2); }
|
|
;
|
|
|
|
block : '{' remember lineseq '}'
|
|
{ if (PL_copline > (line_t)$1)
|
|
PL_copline = $1;
|
|
$$ = block_end($2, $3); }
|
|
;
|
|
|
|
remember: /* NULL */ /* start a full lexical scope */
|
|
{ $$ = 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 */
|
|
{ $$ = Nullop; }
|
|
| lineseq decl
|
|
{ $$ = $1; }
|
|
| lineseq line
|
|
{ $$ = append_list(OP_LINESEQ,
|
|
(LISTOP*)$1, (LISTOP*)$2);
|
|
PL_pad_reset_pending = TRUE;
|
|
if ($1 && $2) PL_hints |= HINT_BLOCK_SCOPE; }
|
|
;
|
|
|
|
line : label cond
|
|
{ $$ = 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 ';'
|
|
{ $$ = newSTATEOP(0, $1, $2);
|
|
PL_expect = XSTATE; }
|
|
;
|
|
|
|
sideff : error
|
|
{ $$ = Nullop; }
|
|
| expr
|
|
{ $$ = $1; }
|
|
| expr IF expr
|
|
{ $$ = newLOGOP(OP_AND, 0, $3, $1); }
|
|
| expr UNLESS expr
|
|
{ $$ = newLOGOP(OP_OR, 0, $3, $1); }
|
|
| expr WHILE expr
|
|
{ $$ = 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 */
|
|
{ $$ = Nullop; }
|
|
| ELSE mblock
|
|
{ ($2)->op_flags |= OPf_PARENS; $$ = 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;
|
|
$$ = block_end($3,
|
|
newCONDOP(0, $4, scope($6), $7)); }
|
|
;
|
|
|
|
cont : /* NULL */
|
|
{ $$ = Nullop; }
|
|
| CONTINUE block
|
|
{ $$ = scope($2); }
|
|
;
|
|
|
|
loop : label WHILE '(' remember mtexpr ')' mblock cont
|
|
{ PL_copline = $2;
|
|
$$ = 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 */
|
|
{ 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, (LOOP*)Nullop,
|
|
NOLINE, Nullop, $2, $3)); }
|
|
;
|
|
|
|
nexpr : /* NULL */
|
|
{ $$ = Nullop; }
|
|
| sideff
|
|
;
|
|
|
|
texpr : /* NULL means true */
|
|
{ (void)scan_num("1"); $$ = yylval.opval; }
|
|
| 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
|
|
;
|
|
|
|
decl : format
|
|
{ $$ = 0; }
|
|
| subrout
|
|
{ $$ = 0; }
|
|
| mysubrout
|
|
{ $$ = 0; }
|
|
| package
|
|
{ $$ = 0; }
|
|
| use
|
|
{ $$ = 0; }
|
|
;
|
|
|
|
format : FORMAT startformsub formname block
|
|
{ newFORM($2, $3, $4); }
|
|
;
|
|
|
|
formname: WORD { $$ = $1; }
|
|
| /* NULL */ { $$ = Nullop; }
|
|
;
|
|
|
|
mysubrout: MYSUB startsub subname proto subattrlist subbody
|
|
{ newMYSUB($2, $3, $4, $5, $6); }
|
|
;
|
|
|
|
subrout : SUB startsub subname proto subattrlist subbody
|
|
{ newATTRSUB($2, $3, $4, $5, $6); }
|
|
;
|
|
|
|
startsub: /* NULL */ /* start a regular subroutine scope */
|
|
{ $$ = start_subparse(FALSE, 0); }
|
|
;
|
|
|
|
startanonsub: /* NULL */ /* start an anonymous subroutine scope */
|
|
{ $$ = start_subparse(FALSE, CVf_ANON); }
|
|
;
|
|
|
|
startformsub: /* NULL */ /* start a format subroutine scope */
|
|
{ $$ = start_subparse(TRUE, 0); }
|
|
;
|
|
|
|
subname : WORD { STRLEN n_a; char *name = SvPV(((SVOP*)$1)->op_sv,n_a);
|
|
if (strEQ(name, "BEGIN") || strEQ(name, "END")
|
|
|| strEQ(name, "INIT") || strEQ(name, "CHECK"))
|
|
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; }
|
|
| ';' { $$ = Nullop; PL_expect = XSTATE; }
|
|
;
|
|
|
|
package : PACKAGE WORD ';'
|
|
{ package($2); }
|
|
| PACKAGE ';'
|
|
{ package(Nullop); }
|
|
;
|
|
|
|
use : USE startsub
|
|
{ CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
|
|
WORD WORD listexpr ';'
|
|
{ utilize($1, $2, $4, $5, $6); }
|
|
;
|
|
|
|
expr : expr ANDOP expr
|
|
{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
|
|
| expr OROP expr
|
|
{ $$ = newLOGOP($2, 0, $1, $3); }
|
|
| argexpr %prec PREC_LOW
|
|
;
|
|
|
|
argexpr : argexpr ','
|
|
{ $$ = $1; }
|
|
| argexpr ',' term
|
|
{ $$ = append_elem(OP_LIST, $1, $3); }
|
|
| term %prec PREC_LOW
|
|
;
|
|
|
|
listop : LSTOP indirob argexpr
|
|
{ $$ = convert($1, OPf_STACKED,
|
|
prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); }
|
|
| FUNC '(' indirob expr ')'
|
|
{ $$ = convert($1, OPf_STACKED,
|
|
prepend_elem(OP_LIST, newGVREF($1,$3), $4) ); }
|
|
| term ARROW method '(' listexprcom ')'
|
|
{ $$ = 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_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 '(' 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)); }
|
|
;
|
|
|
|
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
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term MULOP term
|
|
{ if ($2 != OP_REPEAT)
|
|
scalar($1);
|
|
$$ = newBINOP($2, 0, $1, scalar($3)); }
|
|
| term ADDOP term
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term SHIFTOP term
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term RELOP term
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term EQOP term
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term BITANDOP term
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term BITOROP term
|
|
{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
|
|
| term DOTDOT term
|
|
{ $$ = newRANGE($2, scalar($1), scalar($3));}
|
|
| term ANDAND term
|
|
{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
|
|
| term OROR term
|
|
{ $$ = newLOGOP(OP_OR, 0, $1, $3); }
|
|
| term '?' term ':' term
|
|
{ $$ = newCONDOP(0, $1, $3, $5); }
|
|
| term MATCHOP term
|
|
{ $$ = bind_match($2, $1, $3); }
|
|
|
|
| '-' term %prec UMINUS
|
|
{ $$ = newUNOP(OP_NEGATE, 0, scalar($2)); }
|
|
| '+' term %prec UMINUS
|
|
{ $$ = $2; }
|
|
| '!' term
|
|
{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
|
|
| '~' term
|
|
{ $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));}
|
|
| REFGEN term
|
|
{ $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); }
|
|
| term POSTINC
|
|
{ $$ = newUNOP(OP_POSTINC, 0,
|
|
mod(scalar($1), OP_POSTINC)); }
|
|
| term POSTDEC
|
|
{ $$ = newUNOP(OP_POSTDEC, 0,
|
|
mod(scalar($1), OP_POSTDEC)); }
|
|
| PREINC term
|
|
{ $$ = newUNOP(OP_PREINC, 0,
|
|
mod(scalar($2), OP_PREINC)); }
|
|
| PREDEC term
|
|
{ $$ = newUNOP(OP_PREDEC, 0,
|
|
mod(scalar($2), OP_PREDEC)); }
|
|
| myattrterm %prec UNIOP
|
|
{ $$ = $1; }
|
|
| LOCAL term %prec UNIOP
|
|
{ $$ = localize($2,$1); }
|
|
| '(' expr ')'
|
|
{ $$ = sawparens($2); }
|
|
| '(' ')'
|
|
{ $$ = sawparens(newNULLLIST()); }
|
|
| '[' expr ']'
|
|
{ $$ = newANONLIST($2); }
|
|
| '[' ']'
|
|
{ $$ = newANONLIST(Nullop); }
|
|
| 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 '('
|
|
{ $$ = $1; }
|
|
| hsh %prec '('
|
|
{ $$ = $1; }
|
|
| ary %prec '('
|
|
{ $$ = $1; }
|
|
| arylen %prec '('
|
|
{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
|
|
| subscripted
|
|
{ $$ = $1; }
|
|
| '(' expr ')' '[' expr ']'
|
|
{ $$ = newSLICEOP(0, $5, $2); }
|
|
| '(' ')' '[' expr ']'
|
|
{ $$ = newSLICEOP(0, $4, Nullop); }
|
|
| ary '[' expr ']'
|
|
{ $$ = prepend_elem(OP_ASLICE,
|
|
newOP(OP_PUSHMARK, 0),
|
|
newLISTOP(OP_ASLICE, 0,
|
|
list($3),
|
|
ref($1, OP_ASLICE))); }
|
|
| ary '{' expr ';' '}'
|
|
{ $$ = prepend_elem(OP_HSLICE,
|
|
newOP(OP_PUSHMARK, 0),
|
|
newLISTOP(OP_HSLICE, 0,
|
|
list($3),
|
|
ref(oopsHV($1), OP_HSLICE)));
|
|
PL_expect = XOPERATOR; }
|
|
| THING %prec '('
|
|
{ $$ = $1; }
|
|
| amper
|
|
{ $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
|
|
| amper '(' ')'
|
|
{ $$ = 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 '(' ')'
|
|
{ $$ = newUNOP(OP_ENTERSUB,
|
|
OPf_SPECIAL|OPf_STACKED,
|
|
prepend_elem(OP_LIST,
|
|
scalar(newCVREF(
|
|
(OPpENTERSUB_AMPER<<8),
|
|
scalar($2)
|
|
)),Nullop)); dep();}
|
|
| DO WORD '(' expr ')'
|
|
{ $$ = newUNOP(OP_ENTERSUB,
|
|
OPf_SPECIAL|OPf_STACKED,
|
|
append_elem(OP_LIST,
|
|
$4,
|
|
scalar(newCVREF(
|
|
(OPpENTERSUB_AMPER<<8),
|
|
scalar($2)
|
|
)))); dep();}
|
|
| DO scalar '(' ')'
|
|
{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
|
|
prepend_elem(OP_LIST,
|
|
scalar(newCVREF(0,scalar($2))), Nullop)); dep();}
|
|
| DO scalar '(' expr ')'
|
|
{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
|
|
prepend_elem(OP_LIST,
|
|
$4,
|
|
scalar(newCVREF(0,scalar($2))))); dep();}
|
|
| LOOPEX
|
|
{ $$ = newOP($1, OPf_SPECIAL);
|
|
PL_hints |= HINT_BLOCK_SCOPE; }
|
|
| LOOPEX term
|
|
{ $$ = newLOOPEX($1,$2); }
|
|
| NOTOP argexpr
|
|
{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
|
|
| UNIOP
|
|
{ $$ = newOP($1, 0); }
|
|
| UNIOP block
|
|
{ $$ = newUNOP($1, 0, $2); }
|
|
| UNIOP term
|
|
{ $$ = 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 '(' term ')'
|
|
{ $$ = pmruntime($1, $3, Nullop); }
|
|
| PMFUNC '(' term ',' term ')'
|
|
{ $$ = pmruntime($1, $3, $5); }
|
|
| WORD
|
|
| listop
|
|
;
|
|
|
|
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($1,$2); }
|
|
;
|
|
|
|
scalar : '$' indirob
|
|
{ $$ = newSVREF($2); }
|
|
;
|
|
|
|
ary : '@' indirob
|
|
{ $$ = newAVREF($2); }
|
|
;
|
|
|
|
hsh : '%' indirob
|
|
{ $$ = newHVREF($2); }
|
|
;
|
|
|
|
arylen : DOLSHARP indirob
|
|
{ $$ = newAVREF($2); }
|
|
;
|
|
|
|
star : '*' indirob
|
|
{ $$ = newGVREF(0,$2); }
|
|
;
|
|
|
|
indirob : WORD
|
|
{ $$ = scalar($1); }
|
|
| scalar %prec PREC_LOW
|
|
{ $$ = scalar($1); }
|
|
| block
|
|
{ $$ = scope($1); }
|
|
|
|
| PRIVATEREF
|
|
{ $$ = $1; }
|
|
;
|
|
|
|
%% /* PROGRAM */
|
|
|
|
/* more stuff added to make perly_c.diff easier to apply */
|
|
|
|
#ifdef yyparse
|
|
#undef yyparse
|
|
#endif
|
|
#define yyparse() Perl_yyparse(pTHX)
|
|
|