[p5sagit/p5-mst-13.2.git] / perly.y

/*    perly.y
 *
 *    Copyright (c) 1991-1997, 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"
#include "perl.h"

static void
dep(void)
{
    deprecate("\"do\" to call subroutines");
}

%}

%start prog

%union {
    I32	ival;
    char *pval;
    OP *opval;
    GV *gvval;
}

%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 LOCAL MY

%type <ival> prog decl local format startsub startanonsub startformsub
%type <ival> remember mremember '&'
%type <opval> block mblock lineseq line loop cond else
%type <opval> expr term 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 <pval> label

%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
%left '('

%% /* RULES */

prog	:	/* NULL */
		{
#if defined(YYDEBUG) && defined(DEBUGGING)
		    yydebug = (debug & 1);
#endif
		    expect = XSTATE;
		}
	/*CONTINUED*/	lineseq
			{ newPROG($2); }
	;

block	:	'{' remember lineseq '}'
			{ if (copline > (line_t)$1)
			      copline = $1;
			  $$ = block_end($2, $3); }
	;

remember:	/* NULL */	/* start a full lexical scope */
			{ $$ = block_start(TRUE); }
	;

mblock	:	'{' mremember lineseq '}'
			{ if (copline > (line_t)$1)
			      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);
			    pad_reset_pending = TRUE;
			    if ($1 && $2) 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 {
			      $$ = Nullop;
			      copline = NOLINE;
			    }
			    expect = XSTATE; }
	|	label sideff ';'
			{ $$ = newSTATEOP(0, $1, $2);
			  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 */
			{ $$ = Nullop; }
	|	ELSE mblock
			{ $$ = scope($2); }
	|	ELSIF '(' mexpr ')' mblock else
			{ copline = $1;
			    $$ = newSTATEOP(0, Nullch,
				   newCONDOP(0, $3, scope($5), $6));
			    hints |= HINT_BLOCK_SCOPE; }
	;

cond	:	IF '(' remember mexpr ')' mblock else
			{ copline = $1;
			    $$ = block_end($3,
				   newCONDOP(0, $4, scope($6), $7)); }
	|	UNLESS '(' remember miexpr ')' mblock else
			{ copline = $1;
			    $$ = block_end($3,
				   newCONDOP(0, $4, scope($6), $7)); }
	;

cont	:	/* NULL */
			{ $$ = Nullop; }
	|	CONTINUE block
			{ $$ = scope($2); }
	;

loop	:	label WHILE '(' remember mtexpr ')' mblock cont
			{ copline = $2;
			    $$ = block_end($4,
				   newSTATEOP(0, $1,
				     newWHILEOP(0, 1, (LOOP*)Nullop,
						$2, $5, $7, $8))); }
	|	label UNTIL '(' remember miexpr ')' mblock cont
			{ copline = $2;
			    $$ = 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
			{ $$ = block_end($4,
				 newFOROP(0, $1, $2, Nullop, $5, $7, $8)); }
	|	label FOR '(' remember mnexpr ';' mtexpr ';' mnexpr ')' mblock
			/* basically fake up an initialize-while lineseq */
			{ OP *forop = append_elem(OP_LINESEQ,
					scalar($5),
					newWHILEOP(0, 1, (LOOP*)Nullop,
						   $2, scalar($7),
						   $11, scalar($9)));
			  copline = $2;
			  $$ = 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; }
	|	package
			{ $$ = 0; }
	|	use
			{ $$ = 0; }
	;

format	:	FORMAT startformsub formname block
			{ newFORM($2, $3, $4); }
	;

formname:	WORD		{ $$ = $1; }
	|	/* NULL */	{ $$ = Nullop; }
	;

subrout	:	SUB startsub subname proto subbody
			{ newSUB($2, $3, $4, $5); }
	;

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	{ char *name = SvPV(((SVOP*)$1)->op_sv, na);
			  if (strEQ(name, "BEGIN") || strEQ(name, "END")
			      || strEQ(name, "INIT"))
			      CvUNIQUE_on(compcv);
			  $$ = $1; }
	;

proto	:	/* NULL */
			{ $$ = Nullop; }
	|	THING
	;

subbody	:	block	{ $$ = $1; }
	|	';'	{ $$ = Nullop; expect = XSTATE; }
	;

package :	PACKAGE WORD ';'
			{ package($2); }
	|	PACKAGE ';'
			{ package(Nullop); }
	;

use	:	USE startsub
			{ CvUNIQUE_on(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
	;

argexpr	:	argexpr ','
			{ $$ = $1; }
	|	argexpr ',' term
			{ $$ = append_elem(OP_LIST, $1, $3); }
	|	term
	;

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 ')'
			{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
				append_elem(OP_LIST,
				    prepend_elem(OP_LIST, scalar($1), $5),
				    newUNOP(OP_METHOD, 0, $3))); }
	|	METHOD indirob listexpr
			{ $$ = 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 ')'
			{ $$ = convert($1, 0, $3); }
	|	LSTOPSUB startanonsub block
			{ $3 = newANONSUB($2, 0, $3); }
		    listexpr		%prec LSTOP
			{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
				 append_elem(OP_LIST,
				   prepend_elem(OP_LIST, $3, $5), $1)); }
	;

method	:	METHOD
	|	scalar
	;

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
			{ $$ = newUNOP(OP_PREDEC, 0,
					mod(scalar($2), OP_PREDEC)); }
	|	local term	%prec UNIOP
			{ $$ = localize($2,$1); }
	|	'(' expr ')'
			{ $$ = sawparens($2); }
	|	'(' ')'
			{ $$ = sawparens(newNULLLIST()); }
	|	'[' expr ']'				%prec '('
			{ $$ = newANONLIST($2); }
	|	'[' ']'					%prec '('
			{ $$ = newANONLIST(Nullop); }
	|	HASHBRACK expr ';' '}'			%prec '('
			{ $$ = newANONHASH($2); }
	|	HASHBRACK ';' '}'				%prec '('
			{ $$ = newANONHASH(Nullop); }
	|	ANONSUB startanonsub proto block		%prec '('
			{ $$ = newANONSUB($2, $3, $4); }
	|	scalar	%prec '('
			{ $$ = $1; }
	|	star '{' expr ';' '}'
			{ $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); }
	|	star	%prec '('
			{ $$ = $1; }
	|	scalar '[' expr ']'	%prec '('
			{ $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); }
	|	term ARROW '[' expr ']'	%prec '('
			{ $$ = newBINOP(OP_AELEM, 0,
					ref(newAVREF($1),OP_RV2AV),
					scalar($4));}
	|	term '[' expr ']'	%prec '('
			{ assertref($1); $$ = newBINOP(OP_AELEM, 0,
					ref(newAVREF($1),OP_RV2AV),
					scalar($3));}
	|	hsh 	%prec '('
			{ $$ = $1; }
	|	ary 	%prec '('
			{ $$ = $1; }
	|	arylen 	%prec '('
			{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
	|	scalar '{' expr ';' '}'	%prec '('
			{ $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
			    expect = XOPERATOR; }
	|	term ARROW '{' expr ';' '}'	%prec '('
			{ $$ = newBINOP(OP_HELEM, 0,
					ref(newHVREF($1),OP_RV2HV),
					jmaybe($4));
			    expect = XOPERATOR; }
	|	term '{' expr ';' '}'	%prec '('
			{ assertref($1); $$ = newBINOP(OP_HELEM, 0,
					ref(newHVREF($1),OP_RV2HV),
					jmaybe($3));
			    expect = XOPERATOR; }
	|	'(' expr ')' '[' expr ']'	%prec '('
			{ $$ = newSLICEOP(0, $5, $2); }
	|	'(' ')' '[' expr ']'	%prec '('
			{ $$ = newSLICEOP(0, $4, Nullop); }
	|	ary '[' expr ']'	%prec '('
			{ $$ = prepend_elem(OP_ASLICE,
				newOP(OP_PUSHMARK, 0),
				    newLISTOP(OP_ASLICE, 0,
					list($3),
					ref($1, OP_ASLICE))); }
	|	ary '{' expr ';' '}'	%prec '('
			{ $$ = prepend_elem(OP_HSLICE,
				newOP(OP_PUSHMARK, 0),
				    newLISTOP(OP_HSLICE, 0,
					list($3),
					ref(oopsHV($1), OP_HSLICE)));
			    expect = XOPERATOR; }
	|	THING	%prec '('
			{ $$ = $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
			{ $$ = newUNOP(OP_DOFILE, 0, scalar($2)); }
	|	DO block	%prec '('
			{ $$ = 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();}
	|	term ARROW '(' ')'	%prec '('
			{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
				   newCVREF(0, scalar($1))); }
	|	term ARROW '(' expr ')'	%prec '('
			{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
				   append_elem(OP_LIST, $4,
				       newCVREF(0, scalar($1)))); }
	|	LOOPEX
			{ $$ = newOP($1, OPf_SPECIAL);
			    hints |= HINT_BLOCK_SCOPE; }
	|	LOOPEX term
			{ $$ = 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
	;

listexpr:	/* NULL */
			{ $$ = Nullop; }
	|	argexpr
			{ $$ = $1; }
	;

listexprcom:	/* NULL */
			{ $$ = Nullop; }
	|	expr
			{ $$ = $1; }
	|	expr ','
			{ $$ = $1; }
	;

local	:	LOCAL	{ $$ = 0; }
	|	MY	{ $$ = 1; }
	;

my_scalar:	scalar
			{ 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
			{ $$ = scalar($1); }
	|	scalar
			{ $$ = scalar($1);  }
	|	block
			{ $$ = scope($1); }

	|	PRIVATEREF
			{ $$ = $1; }
	;

%% /* PROGRAM */
Commit	Line	Data
a0d0e21e	1	/* perly.y
a687059c	2	*
9607fc9c	3	* Copyright (c) 1991-1997, Larry Wall
a687059c	4	*
9ef589d8	5	* You may distribute under the terms of either the GNU General Public
9ef589d8	6	* License or the Artistic License, as specified in the README file.
8d063cd8	7	*
a0d0e21e	8	*/
	9
	10	/*
	11	* 'I see,' laughed Strider. 'I look foul and feel fair. Is that it?
14a38fd5	12	* All that is gold does not glitter, not all those who wander are lost.'
8d063cd8	13	*/
	14
	15	%{
79072805	16	#include "EXTERN.h"
8d063cd8	17	#include "perl.h"
378cc40b	18
a0d0e21e	19	static void
8ac85365	20	dep(void)
a0d0e21e	21	{
	22	deprecate("\"do\" to call subroutines");
	23	}
f0fcb552	24
8d063cd8	25	%}
	26
	27	%start prog
	28
	29	%union {
79072805	30	I32 ival;
	31	char *pval;
	32	OP *opval;
	33	GV *gvval;
8d063cd8	34	}
8d063cd8	35
f0fcb552	36	%token <ival> '{' ')'
f0fcb552	37
a0d0e21e	38	%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF
4633a7c4	39	%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
79072805	40	%token <pval> LABEL
a0d0e21e	41	%token <ival> FORMAT SUB ANONSUB PACKAGE USE
79072805	42	%token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR
79072805	43	%token <ival> LOOPEX DOTDOT
36477c24	44	%token <ival> FUNC0 FUNC1 FUNC UNIOP LSTOP
79072805	45	%token <ival> RELOP EQOP MULOP ADDOP
55497cff	46	%token <ival> DOLSHARP DO HASHBRACK NOAMP
55497cff	47	%token LOCAL MY
79072805	48
44a8e56a	49	%type <ival> prog decl local format startsub startanonsub startformsub
28757baa	50	%type <ival> remember mremember '&'
bbce6d69	51	%type <opval> block mblock lineseq line loop cond else
a0d0e21e	52	%type <opval> expr term scalar ary hsh arylen star amper sideff
bbce6d69	53	%type <opval> argexpr nexpr texpr iexpr mexpr mnexpr mtexpr miexpr
44a8e56a	54	%type <opval> listexpr listexprcom indirob listop method
44a8e56a	55	%type <opval> formname subname proto subbody cont my_scalar
79072805	56	%type <pval> label
79072805	57
a0d0e21e	58	%left <ival> OROP
463ee0b2	59	%left ANDOP
c07a80fd	60	%right NOTOP
36477c24	61	%nonassoc LSTOP LSTOPSUB
8d063cd8	62	%left ','
a0d0e21e	63	%right <ival> ASSIGNOP
8d063cd8	64	%right '?' ':'
	65	%nonassoc DOTDOT
	66	%left OROR
	67	%left ANDAND
79072805	68	%left <ival> BITOROP
79072805	69	%left <ival> BITANDOP
a687059c	70	%nonassoc EQOP
a687059c	71	%nonassoc RELOP
36477c24	72	%nonassoc UNIOP UNIOPSUB
79072805	73	%left <ival> SHIFTOP
a687059c	74	%left ADDOP
a687059c	75	%left MULOP
8990e307	76	%left <ival> MATCHOP
79072805	77	%right '!' '~' UMINUS REFGEN
	78	%right <ival> POWOP
	79	%nonassoc PREINC PREDEC POSTINC POSTDEC
8990e307	80	%left ARROW
8d063cd8	81	%left '('
	82
	83	%% /* RULES */
	84
ae986130	85	prog : /* NULL */
	86	{
	87	#if defined(YYDEBUG) && defined(DEBUGGING)
	88	yydebug = (debug & 1);
	89	#endif
8990e307	90	expect = XSTATE;
ae986130	91	}
ae986130	92	/CONTINUED/ lineseq
a0d0e21e	93	{ newPROG($2); }
8d063cd8	94	;
8d063cd8	95
a687059c	96	block : '{' remember lineseq '}'
36477c24	97	{ if (copline > (line_t)$1)
	98	copline = $1;
	99	$$ = block_end($2, $3); }
a0d0e21e	100	;
a0d0e21e	101
55497cff	102	remember: /* NULL / / start a full lexical scope */
	103	{ $$ = block_start(TRUE); }
	104	;
	105
bbce6d69	106	mblock : '{' mremember lineseq '}'
36477c24	107	{ if (copline > (line_t)$1)
	108	copline = $1;
	109	$$ = block_end($2, $3); }
55497cff	110	;
	111
	112	mremember: /* NULL / / start a partial lexical scope */
	113	{ $$ = block_start(FALSE); }
8d063cd8	114	;
	115
	116	lineseq : /* NULL */
79072805	117	{ $$ = Nullop; }
	118	\| lineseq decl
	119	{ $$ = $1; }
8d063cd8	120	\| lineseq line
463ee0b2	121	{ $$ = append_list(OP_LINESEQ,
a0d0e21e	122	(LISTOP)$1, (LISTOP)$2);
a0d0e21e	123	pad_reset_pending = TRUE;
85e6fe83	124	if ($1 && $2) hints \|= HINT_BLOCK_SCOPE; }
8d063cd8	125	;
8d063cd8	126
79072805	127	line : label cond
79072805	128	{ $$ = newSTATEOP(0, $1, $2); }
8d063cd8	129	\| loop /* loops add their own labels */
	130	\| label ';'
	131	{ if ($1 != Nullch) {
79072805	132	$$ = newSTATEOP(0, $1, newOP(OP_NULL, 0));
450a55e4	133	}
450a55e4	134	else {
79072805	135	$$ = Nullop;
79072805	136	copline = NOLINE;
32c2e4fb	137	}
8990e307	138	expect = XSTATE; }
8d063cd8	139	\| label sideff ';'
79072805	140	{ $$ = newSTATEOP(0, $1, $2);
8990e307	141	expect = XSTATE; }
8d063cd8	142	;
8d063cd8	143
a687059c	144	sideff : error
79072805	145	{ $$ = Nullop; }
a687059c	146	\| expr
79072805	147	{ $$ = $1; }
a687059c	148	\| expr IF expr
79072805	149	{ $$ = newLOGOP(OP_AND, 0, $3, $1); }
a687059c	150	\| expr UNLESS expr
79072805	151	{ $$ = newLOGOP(OP_OR, 0, $3, $1); }
a687059c	152	\| expr WHILE expr
8990e307	153	{ $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); }
55497cff	154	\| expr UNTIL iexpr
55497cff	155	{ $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);}
ecca16b0	156	\| expr FOR expr
	157	{ $$ = newFOROP(0, Nullch, $2,
	158	Nullop, $3, $1, Nullop); }
79072805	159	;
	160
	161	else : /* NULL */
	162	{ $$ = Nullop; }
55497cff	163	\| ELSE mblock
79072805	164	{ $$ = scope($2); }
55497cff	165	\| ELSIF '(' mexpr ')' mblock else
79072805	166	{ copline = $1;
bbce6d69	167	$$ = newSTATEOP(0, Nullch,
bbce6d69	168	newCONDOP(0, $3, scope($5), $6));
4633a7c4	169	hints \|= HINT_BLOCK_SCOPE; }
79072805	170	;
79072805	171
55497cff	172	cond : IF '(' remember mexpr ')' mblock else
79072805	173	{ copline = $1;
36477c24	174	$$ = block_end($3,
bbce6d69	175	newCONDOP(0, $4, scope($6), $7)); }
55497cff	176	\| UNLESS '(' remember miexpr ')' mblock else
79072805	177	{ copline = $1;
36477c24	178	$$ = block_end($3,
bbce6d69	179	newCONDOP(0, $4, scope($6), $7)); }
79072805	180	;
	181
	182	cont : /* NULL */
	183	{ $$ = Nullop; }
	184	\| CONTINUE block
	185	{ $$ = scope($2); }
	186	;
	187
55497cff	188	loop : label WHILE '(' remember mtexpr ')' mblock cont
79072805	189	{ copline = $2;
36477c24	190	$$ = block_end($4,
55497cff	191	newSTATEOP(0, $1,
bbce6d69	192	newWHILEOP(0, 1, (LOOP*)Nullop,
fb73857a	193	$2, $5, $7, $8))); }
55497cff	194	\| label UNTIL '(' remember miexpr ')' mblock cont
79072805	195	{ copline = $2;
36477c24	196	$$ = block_end($4,
55497cff	197	newSTATEOP(0, $1,
bbce6d69	198	newWHILEOP(0, 1, (LOOP*)Nullop,
fb73857a	199	$2, $5, $7, $8))); }
bbce6d69	200	\| label FOR MY remember my_scalar '(' mexpr ')' mblock cont
36477c24	201	{ $$ = block_end($4,
bbce6d69	202	newFOROP(0, $1, $2, $5, $7, $9, $10)); }
bbce6d69	203	\| label FOR scalar '(' remember mexpr ')' mblock cont
36477c24	204	{ $$ = block_end($5,
bbce6d69	205	newFOROP(0, $1, $2, mod($3, OP_ENTERLOOP),
	206	$6, $8, $9)); }
	207	\| label FOR '(' remember mexpr ')' mblock cont
36477c24	208	{ $$ = block_end($4,
55497cff	209	newFOROP(0, $1, $2, Nullop, $5, $7, $8)); }
bbce6d69	210	\| label FOR '(' remember mnexpr ';' mtexpr ';' mnexpr ')' mblock
8d063cd8	211	/* basically fake up an initialize-while lineseq */
fb73857a	212	{ OP *forop = append_elem(OP_LINESEQ,
	213	scalar($5),
	214	newWHILEOP(0, 1, (LOOP*)Nullop,
	215	$2, scalar($7),
	216	$11, scalar($9)));
	217	copline = $2;
	218	$$ = block_end($4, newSTATEOP(0, $1, forop)); }
79072805	219	\| label block cont /* a block is a loop that happens once */
fb73857a	220	{ $$ = newSTATEOP(0, $1,
	221	newWHILEOP(0, 1, (LOOP*)Nullop,
	222	NOLINE, Nullop, $2, $3)); }
8d063cd8	223	;
	224
	225	nexpr : /* NULL */
79072805	226	{ $$ = Nullop; }
8d063cd8	227	\| sideff
	228	;
	229
	230	texpr : /* NULL means true */
79072805	231	{ (void)scan_num("1"); $$ = yylval.opval; }
8d063cd8	232	\| expr
	233	;
	234
55497cff	235	iexpr : expr
	236	{ $$ = invert(scalar($1)); }
	237	;
	238
	239	mexpr : expr
bbce6d69	240	{ $$ = $1; intro_my(); }
	241	;
	242
	243	mnexpr : nexpr
	244	{ $$ = $1; intro_my(); }
55497cff	245	;
	246
	247	mtexpr : texpr
bbce6d69	248	{ $$ = $1; intro_my(); }
55497cff	249	;
	250
	251	miexpr : iexpr
bbce6d69	252	{ $$ = $1; intro_my(); }
55497cff	253	;
55497cff	254
8d063cd8	255	label : /* empty */
8d063cd8	256	{ $$ = Nullch; }
32c2e4fb	257	\| LABEL
8d063cd8	258	;
8d063cd8	259
8d063cd8	260	decl : format
	261	{ $$ = 0; }
	262	\| subrout
	263	{ $$ = 0; }
a687059c	264	\| package
a687059c	265	{ $$ = 0; }
a0d0e21e	266	\| use
85e6fe83	267	{ $$ = 0; }
8d063cd8	268	;
8d063cd8	269
44a8e56a	270	format : FORMAT startformsub formname block
a0d0e21e	271	{ newFORM($2, $3, $4); }
44a8e56a	272	;
	273
	274	formname: WORD { $$ = $1; }
	275	\| /* NULL */ { $$ = Nullop; }
8d063cd8	276	;
8d063cd8	277
28757baa	278	subrout : SUB startsub subname proto subbody
4633a7c4	279	{ newSUB($2, $3, $4, $5); }
28757baa	280	;
28757baa	281
fa83b5b6	282	startsub: /* NULL / / start a regular subroutine scope */
774d564b	283	{ $$ = start_subparse(FALSE, 0); }
28757baa	284	;
	285
	286	startanonsub: /* NULL / / start an anonymous subroutine scope */
774d564b	287	{ $$ = start_subparse(FALSE, CVf_ANON); }
28757baa	288	;
28757baa	289
44a8e56a	290	startformsub: /* NULL / / start a format subroutine scope */
774d564b	291	{ $$ = start_subparse(TRUE, 0); }
44a8e56a	292	;
44a8e56a	293
e858de61	294	subname : WORD { char name = SvPV(((SVOP)$1)->op_sv, na);
e858de61	295	if (strEQ(name, "BEGIN") \|\| strEQ(name, "END")
7d07dbc2	296	\|\| strEQ(name, "INIT"))
977336f5	297	CvUNIQUE_on(compcv);
28757baa	298	$$ = $1; }
a0d0e21e	299	;
a0d0e21e	300
4633a7c4	301	proto : /* NULL */
	302	{ $$ = Nullop; }
	303	\| THING
	304	;
28757baa	305
	306	subbody : block { $$ = $1; }
	307	\| ';' { $$ = Nullop; expect = XSTATE; }
8d063cd8	308	;
8d063cd8	309
a687059c	310	package : PACKAGE WORD ';'
79072805	311	{ package($2); }
93a17b20	312	\| PACKAGE ';'
93a17b20	313	{ package(Nullop); }
a687059c	314	;
a687059c	315
28757baa	316	use : USE startsub
	317	{ CvUNIQUE_on(compcv); /* It's a BEGIN {} */ }
	318	WORD WORD listexpr ';'
	319	{ utilize($1, $2, $4, $5, $6); }
85e6fe83	320	;
85e6fe83	321
a0d0e21e	322	expr : expr ANDOP expr
	323	{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
	324	\| expr OROP expr
	325	{ $$ = newLOGOP($2, 0, $1, $3); }
a0d0e21e	326	\| argexpr
	327	;
	328
	329	argexpr : argexpr ','
	330	{ $$ = $1; }
	331	\| argexpr ',' term
79072805	332	{ $$ = append_elem(OP_LIST, $1, $3); }
a0d0e21e	333	\| term
8d063cd8	334	;
8d063cd8	335
a0d0e21e	336	listop : LSTOP indirob argexpr
79072805	337	{ $$ = convert($1, OPf_STACKED,
a0d0e21e	338	prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); }
a0d0e21e	339	\| FUNC '(' indirob expr ')'
79072805	340	{ $$ = convert($1, OPf_STACKED,
a0d0e21e	341	prepend_elem(OP_LIST, newGVREF($1,$3), $4) ); }
a0d0e21e	342	\| term ARROW method '(' listexprcom ')'
4633a7c4	343	{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e	344	append_elem(OP_LIST,
55497cff	345	prepend_elem(OP_LIST, scalar($1), $5),
a0d0e21e	346	newUNOP(OP_METHOD, 0, $3))); }
79072805	347	\| METHOD indirob listexpr
4633a7c4	348	{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e	349	append_elem(OP_LIST,
4633a7c4	350	prepend_elem(OP_LIST, $2, $3),
a0d0e21e	351	newUNOP(OP_METHOD, 0, $1))); }
a0d0e21e	352	\| FUNCMETH indirob '(' listexprcom ')'
4633a7c4	353	{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e	354	append_elem(OP_LIST,
4633a7c4	355	prepend_elem(OP_LIST, $2, $4),
a0d0e21e	356	newUNOP(OP_METHOD, 0, $1))); }
79072805	357	\| LSTOP listexpr
79072805	358	{ $$ = convert($1, 0, $2); }
a0d0e21e	359	\| FUNC '(' listexprcom ')'
79072805	360	{ $$ = convert($1, 0, $3); }
28757baa	361	\| LSTOPSUB startanonsub block
	362	{ $3 = newANONSUB($2, 0, $3); }
	363	listexpr %prec LSTOP
4633a7c4	364	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
28757baa	365	append_elem(OP_LIST,
28757baa	366	prepend_elem(OP_LIST, $3, $5), $1)); }
a687059c	367	;
a687059c	368
a0d0e21e	369	method : METHOD
	370	\| scalar
	371	;
	372
	373	term : term ASSIGNOP term
	374	{ $$ = newASSIGNOP(OPf_STACKED, $1, $2, $3); }
	375	\| term POWOP term
79072805	376	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	377	\| term MULOP term
79072805	378	{ if ($2 != OP_REPEAT)
	379	scalar($1);
	380	$$ = newBINOP($2, 0, $1, scalar($3)); }
a0d0e21e	381	\| term ADDOP term
79072805	382	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	383	\| term SHIFTOP term
79072805	384	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	385	\| term RELOP term
79072805	386	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	387	\| term EQOP term
79072805	388	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	389	\| term BITANDOP term
79072805	390	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	391	\| term BITOROP term
79072805	392	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	393	\| term DOTDOT term
79072805	394	{ $$ = newRANGE($2, scalar($1), scalar($3));}
a0d0e21e	395	\| term ANDAND term
463ee0b2	396	{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
a0d0e21e	397	\| term OROR term
463ee0b2	398	{ $$ = newLOGOP(OP_OR, 0, $1, $3); }
a0d0e21e	399	\| term '?' term ':' term
79072805	400	{ $$ = newCONDOP(0, $1, $3, $5); }
a0d0e21e	401	\| term MATCHOP term
79072805	402	{ $$ = bind_match($2, $1, $3); }
8d063cd8	403
a0d0e21e	404	\| '-' term %prec UMINUS
79072805	405	{ $$ = newUNOP(OP_NEGATE, 0, scalar($2)); }
a687059c	406	\| '+' term %prec UMINUS
a687059c	407	{ $$ = $2; }
8d063cd8	408	\| '!' term
79072805	409	{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
8d063cd8	410	\| '~' term
79072805	411	{ $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));}
79072805	412	\| REFGEN term
a0d0e21e	413	{ $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); }
79072805	414	\| term POSTINC
79072805	415	{ $$ = newUNOP(OP_POSTINC, 0,
463ee0b2	416	mod(scalar($1), OP_POSTINC)); }
79072805	417	\| term POSTDEC
79072805	418	{ $$ = newUNOP(OP_POSTDEC, 0,
463ee0b2	419	mod(scalar($1), OP_POSTDEC)); }
79072805	420	\| PREINC term
79072805	421	{ $$ = newUNOP(OP_PREINC, 0,
463ee0b2	422	mod(scalar($2), OP_PREINC)); }
79072805	423	\| PREDEC term
79072805	424	{ $$ = newUNOP(OP_PREDEC, 0,
463ee0b2	425	mod(scalar($2), OP_PREDEC)); }
55497cff	426	\| local term %prec UNIOP
93a17b20	427	{ $$ = localize($2,$1); }
a0d0e21e	428	\| '(' expr ')'
79072805	429	{ $$ = sawparens($2); }
8d063cd8	430	\| '(' ')'
8990e307	431	{ $$ = sawparens(newNULLLIST()); }
a0d0e21e	432	\| '[' expr ']' %prec '('
79072805	433	{ $$ = newANONLIST($2); }
	434	\| '[' ']' %prec '('
	435	{ $$ = newANONLIST(Nullop); }
a0d0e21e	436	\| HASHBRACK expr ';' '}' %prec '('
79072805	437	{ $$ = newANONHASH($2); }
	438	\| HASHBRACK ';' '}' %prec '('
	439	{ $$ = newANONHASH(Nullop); }
28757baa	440	\| ANONSUB startanonsub proto block %prec '('
4633a7c4	441	{ $$ = newANONSUB($2, $3, $4); }
79072805	442	\| scalar %prec '('
8d063cd8	443	{ $$ = $1; }
c07a80fd	444	\| star '{' expr ';' '}'
640b9ef6	445	{ $$ = newBINOP(OP_GELEM, 0, $1, scalar($3)); }
79072805	446	\| star %prec '('
8d063cd8	447	{ $$ = $1; }
79072805	448	\| scalar '[' expr ']' %prec '('
	449	{ $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); }
	450	\| term ARROW '[' expr ']' %prec '('
	451	{ $$ = newBINOP(OP_AELEM, 0,
8990e307	452	ref(newAVREF($1),OP_RV2AV),
79072805	453	scalar($4));}
463ee0b2	454	\| term '[' expr ']' %prec '('
a0d0e21e	455	{ assertref($1); $$ = newBINOP(OP_AELEM, 0,
8990e307	456	ref(newAVREF($1),OP_RV2AV),
463ee0b2	457	scalar($3));}
79072805	458	\| hsh %prec '('
8d063cd8	459	{ $$ = $1; }
79072805	460	\| ary %prec '('
8d063cd8	461	{ $$ = $1; }
79072805	462	\| arylen %prec '('
	463	{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
	464	\| scalar '{' expr ';' '}' %prec '('
	465	{ $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
	466	expect = XOPERATOR; }
	467	\| term ARROW '{' expr ';' '}' %prec '('
	468	{ $$ = newBINOP(OP_HELEM, 0,
8990e307	469	ref(newHVREF($1),OP_RV2HV),
79072805	470	jmaybe($4));
79072805	471	expect = XOPERATOR; }
463ee0b2	472	\| term '{' expr ';' '}' %prec '('
a0d0e21e	473	{ assertref($1); $$ = newBINOP(OP_HELEM, 0,
8990e307	474	ref(newHVREF($1),OP_RV2HV),
463ee0b2	475	jmaybe($3));
463ee0b2	476	expect = XOPERATOR; }
a0d0e21e	477	\| '(' expr ')' '[' expr ']' %prec '('
79072805	478	{ $$ = newSLICEOP(0, $5, $2); }
	479	\| '(' ')' '[' expr ']' %prec '('
	480	{ $$ = newSLICEOP(0, $4, Nullop); }
	481	\| ary '[' expr ']' %prec '('
	482	{ $$ = prepend_elem(OP_ASLICE,
	483	newOP(OP_PUSHMARK, 0),
79072805	484	newLISTOP(OP_ASLICE, 0,
79072805	485	list($3),
a0d0e21e	486	ref($1, OP_ASLICE))); }
79072805	487	\| ary '{' expr ';' '}' %prec '('
	488	{ $$ = prepend_elem(OP_HSLICE,
	489	newOP(OP_PUSHMARK, 0),
79072805	490	newLISTOP(OP_HSLICE, 0,
79072805	491	list($3),
a0d0e21e	492	ref(oopsHV($1), OP_HSLICE)));
79072805	493	expect = XOPERATOR; }
	494	\| THING %prec '('
	495	{ $$ = $1; }
	496	\| amper
c07a80fd	497	{ $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
79072805	498	\| amper '(' ')'
a0d0e21e	499	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
	500	\| amper '(' expr ')'
	501	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
4633a7c4	502	append_elem(OP_LIST, $3, scalar($1))); }
93a17b20	503	\| NOAMP WORD listexpr
a0d0e21e	504	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
a5f75d66	505	append_elem(OP_LIST, $3, scalar($2))); }
a0d0e21e	506	\| DO term %prec UNIOP
463ee0b2	507	{ $$ = newUNOP(OP_DOFILE, 0, scalar($2)); }
79072805	508	\| DO block %prec '('
79072805	509	{ $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); }
8d063cd8	510	\| DO WORD '(' ')'
c07a80fd	511	{ $$ = newUNOP(OP_ENTERSUB,
c07a80fd	512	OPf_SPECIAL\|OPf_STACKED,
4633a7c4	513	prepend_elem(OP_LIST,
c07a80fd	514	scalar(newCVREF(
	515	(OPpENTERSUB_AMPER<<8),
	516	scalar($2)
	517	)),Nullop)); dep();}
a0d0e21e	518	\| DO WORD '(' expr ')'
c07a80fd	519	{ $$ = newUNOP(OP_ENTERSUB,
c07a80fd	520	OPf_SPECIAL\|OPf_STACKED,
4633a7c4	521	append_elem(OP_LIST,
a0d0e21e	522	$4,
c07a80fd	523	scalar(newCVREF(
	524	(OPpENTERSUB_AMPER<<8),
	525	scalar($2)
	526	)))); dep();}
79072805	527	\| DO scalar '(' ')'
a0d0e21e	528	{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL\|OPf_STACKED,
4633a7c4	529	prepend_elem(OP_LIST,
c07a80fd	530	scalar(newCVREF(0,scalar($2))), Nullop)); dep();}
a0d0e21e	531	\| DO scalar '(' expr ')'
a0d0e21e	532	{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL\|OPf_STACKED,
4633a7c4	533	prepend_elem(OP_LIST,
a0d0e21e	534	$4,
c07a80fd	535	scalar(newCVREF(0,scalar($2))))); dep();}
6da72b64	536	\| term ARROW '(' ')' %prec '('
	537	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
	538	newCVREF(0, scalar($1))); }
	539	\| term ARROW '(' expr ')' %prec '('
	540	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
	541	append_elem(OP_LIST, $4,
	542	newCVREF(0, scalar($1)))); }
8d063cd8	543	\| LOOPEX
85e6fe83	544	{ $$ = newOP($1, OPf_SPECIAL);
85e6fe83	545	hints \|= HINT_BLOCK_SCOPE; }
a0d0e21e	546	\| LOOPEX term
8990e307	547	{ $$ = newLOOPEX($1,$2); }
c07a80fd	548	\| NOTOP argexpr
c07a80fd	549	{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
8d063cd8	550	\| UNIOP
79072805	551	{ $$ = newOP($1, 0); }
f0fcb552	552	\| UNIOP block
79072805	553	{ $$ = newUNOP($1, 0, $2); }
a0d0e21e	554	\| UNIOP term
79072805	555	{ $$ = newUNOP($1, 0, $2); }
4633a7c4	556	\| UNIOPSUB term
	557	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
	558	append_elem(OP_LIST, $2, scalar($1))); }
8d063cd8	559	\| FUNC0
79072805	560	{ $$ = newOP($1, 0); }
ae986130	561	\| FUNC0 '(' ')'
79072805	562	{ $$ = newOP($1, 0); }
4633a7c4	563	\| FUNC0SUB
28757baa	564	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
4633a7c4	565	scalar($1)); }
03a14243	566	\| FUNC1 '(' ')'
79072805	567	{ $$ = newOP($1, OPf_SPECIAL); }
8d063cd8	568	\| FUNC1 '(' expr ')'
79072805	569	{ $$ = newUNOP($1, 0, $3); }
a0d0e21e	570	\| PMFUNC '(' term ')'
79072805	571	{ $$ = pmruntime($1, $3, Nullop); }
a0d0e21e	572	\| PMFUNC '(' term ',' term ')'
79072805	573	{ $$ = pmruntime($1, $3, $5); }
79072805	574	\| WORD
378cc40b	575	\| listop
8d063cd8	576	;
8d063cd8	577
79072805	578	listexpr: /* NULL */
8990e307	579	{ $$ = Nullop; }
a0d0e21e	580	\| argexpr
	581	{ $$ = $1; }
	582	;
	583
	584	listexprcom: /* NULL */
	585	{ $$ = Nullop; }
79072805	586	\| expr
79072805	587	{ $$ = $1; }
a0d0e21e	588	\| expr ','
a0d0e21e	589	{ $$ = $1; }
79072805	590	;
79072805	591
55497cff	592	local : LOCAL { $$ = 0; }
	593	\| MY { $$ = 1; }
	594	;
	595
	596	my_scalar: scalar
	597	{ in_my = 0; $$ = my($1); }
	598	;
	599
79072805	600	amper : '&' indirob
c07a80fd	601	{ $$ = newCVREF($1,$2); }
a687059c	602	;
a687059c	603
79072805	604	scalar : '$' indirob
79072805	605	{ $$ = newSVREF($2); }
a687059c	606	;
a687059c	607
79072805	608	ary : '@' indirob
	609	{ $$ = newAVREF($2); }
	610	;
	611
	612	hsh : '%' indirob
	613	{ $$ = newHVREF($2); }
	614	;
	615
	616	arylen : DOLSHARP indirob
	617	{ $$ = newAVREF($2); }
	618	;
	619
	620	star : '*' indirob
a0d0e21e	621	{ $$ = newGVREF(0,$2); }
79072805	622	;
	623
	624	indirob : WORD
	625	{ $$ = scalar($1); }
	626	\| scalar
463ee0b2	627	{ $$ = scalar($1); }
79072805	628	\| block
a0d0e21e	629	{ $$ = scope($1); }
79072805	630
93a17b20	631	\| PRIVATEREF
93a17b20	632	{ $$ = $1; }
8d063cd8	633	;
	634
	635	%% /* PROGRAM */