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

/*    perly.y
 *
 *    Copyright (c) 1991-1994, 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 that wander are lost.'
 */

%{
#include "EXTERN.h"
#include "perl.h"

static void
dep()
{
    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 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
%type <opval> listop method proto 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);}
	;

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;
			    $$ = block_end($4,
				   newSTATEOP(0, $1,
				     newWHILEOP(0, 1, (LOOP*)Nullop,
						$5, $7, $8))); }
	|	label UNTIL '(' remember miexpr ')' mblock cont
			{ copline = $2;
			    $$ = block_end($4,
				   newSTATEOP(0, $1,
				     newWHILEOP(0, 1, (LOOP*)Nullop,
						$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
			{ $$ = block_end($4,
				 newFOROP(0, $1, $2, Nullop, $5, $7, $8)); }
	|	label FOR '(' remember mnexpr ';' mtexpr ';' mnexpr ')' mblock
			/* basically fake up an initialize-while lineseq */
			{ copline = $2;
			    $$ = block_end($4,
				   append_elem(OP_LINESEQ, scalar($5),
				     newSTATEOP(0, $1,
				       newWHILEOP(0, 1, (LOOP*)Nullop,
						  scalar($7),
						  $11, scalar($9))))); }
	|	label block cont  /* a block is a loop that happens once */
			{ $$ = newSTATEOP(0,
				$1, newWHILEOP(0, 1, (LOOP*)Nullop,
					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 startsub WORD block
			{ newFORM($2, $3, $4); }
	|	FORMAT startsub block
			{ newFORM($2, Nullop, $3); }
	;

subrout	:	SUB startsub WORD proto block
			{ newSUB($2, $3, $4, $5); }
	|	SUB startsub WORD proto ';'
			{ newSUB($2, $3, $4, Nullop); expect = XSTATE; }
	;

proto	:	/* NULL */
			{ $$ = Nullop; }
	|	THING
	;
		
startsub:	/* NULL */	/* start a subroutine scope */
			{ $$ = start_subparse(); }
	;

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

use	:	USE startsub WORD WORD listexpr ';'
			{ utilize($1, $2, $3, $4, $5); }
	;

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 ')'
			{ $$ = convert($1, 0, $3); }
	|	LSTOPSUB startsub block listexpr	%prec LSTOP
			{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
			    append_elem(OP_LIST,
			      prepend_elem(OP_LIST, newANONSUB($2, 0, $3), $4),
			      $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 startsub proto block			%prec '('
			{ $$ = newANONSUB($2, $3, $4); }
	|	scalar	%prec '('
			{ $$ = $1; }
	|	star '{' expr ';' '}'
			{ $$ = newBINOP(OP_GELEM, 0, newGVREF(0,$1), $3); }
	|	star	%prec '('
			{ $$ = $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();}
	|	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, 0,
				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	*
a0d0e21e	3	* Copyright (c) 1991-1994, 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?
	12	* All that is gold does not glitter, not all those that wander are lost.'
8d063cd8	13	*/
	14
	15	%{
79072805	16	#include "EXTERN.h"
8d063cd8	17	#include "perl.h"
378cc40b	18
a0d0e21e	19	static void
	20	dep()
	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
55497cff	49	%type <ival> prog decl local format startsub remember mremember '&'
bbce6d69	50	%type <opval> block mblock lineseq line loop cond else
a0d0e21e	51	%type <opval> expr term scalar ary hsh arylen star amper sideff
bbce6d69	52	%type <opval> argexpr nexpr texpr iexpr mexpr mnexpr mtexpr miexpr
a0d0e21e	53	%type <opval> listexpr listexprcom indirob
55497cff	54	%type <opval> listop method proto cont my_scalar
79072805	55	%type <pval> label
79072805	56
a0d0e21e	57	%left <ival> OROP
463ee0b2	58	%left ANDOP
c07a80fd	59	%right NOTOP
36477c24	60	%nonassoc LSTOP LSTOPSUB
8d063cd8	61	%left ','
a0d0e21e	62	%right <ival> ASSIGNOP
8d063cd8	63	%right '?' ':'
	64	%nonassoc DOTDOT
	65	%left OROR
	66	%left ANDAND
79072805	67	%left <ival> BITOROP
79072805	68	%left <ival> BITANDOP
a687059c	69	%nonassoc EQOP
a687059c	70	%nonassoc RELOP
36477c24	71	%nonassoc UNIOP UNIOPSUB
79072805	72	%left <ival> SHIFTOP
a687059c	73	%left ADDOP
a687059c	74	%left MULOP
8990e307	75	%left <ival> MATCHOP
79072805	76	%right '!' '~' UMINUS REFGEN
	77	%right <ival> POWOP
	78	%nonassoc PREINC PREDEC POSTINC POSTDEC
8990e307	79	%left ARROW
8d063cd8	80	%left '('
	81
	82	%% /* RULES */
	83
ae986130	84	prog : /* NULL */
	85	{
	86	#if defined(YYDEBUG) && defined(DEBUGGING)
	87	yydebug = (debug & 1);
	88	#endif
8990e307	89	expect = XSTATE;
ae986130	90	}
ae986130	91	/CONTINUED/ lineseq
a0d0e21e	92	{ newPROG($2); }
8d063cd8	93	;
8d063cd8	94
a687059c	95	block : '{' remember lineseq '}'
36477c24	96	{ if (copline > (line_t)$1)
	97	copline = $1;
	98	$$ = block_end($2, $3); }
a0d0e21e	99	;
a0d0e21e	100
55497cff	101	remember: /* NULL / / start a full lexical scope */
	102	{ $$ = block_start(TRUE); }
	103	;
	104
bbce6d69	105	mblock : '{' mremember lineseq '}'
36477c24	106	{ if (copline > (line_t)$1)
	107	copline = $1;
	108	$$ = block_end($2, $3); }
55497cff	109	;
	110
	111	mremember: /* NULL / / start a partial lexical scope */
	112	{ $$ = block_start(FALSE); }
8d063cd8	113	;
	114
	115	lineseq : /* NULL */
79072805	116	{ $$ = Nullop; }
	117	\| lineseq decl
	118	{ $$ = $1; }
8d063cd8	119	\| lineseq line
463ee0b2	120	{ $$ = append_list(OP_LINESEQ,
a0d0e21e	121	(LISTOP)$1, (LISTOP)$2);
a0d0e21e	122	pad_reset_pending = TRUE;
85e6fe83	123	if ($1 && $2) hints \|= HINT_BLOCK_SCOPE; }
8d063cd8	124	;
8d063cd8	125
79072805	126	line : label cond
79072805	127	{ $$ = newSTATEOP(0, $1, $2); }
8d063cd8	128	\| loop /* loops add their own labels */
	129	\| label ';'
	130	{ if ($1 != Nullch) {
79072805	131	$$ = newSTATEOP(0, $1, newOP(OP_NULL, 0));
450a55e4	132	}
450a55e4	133	else {
79072805	134	$$ = Nullop;
79072805	135	copline = NOLINE;
32c2e4fb	136	}
8990e307	137	expect = XSTATE; }
8d063cd8	138	\| label sideff ';'
79072805	139	{ $$ = newSTATEOP(0, $1, $2);
8990e307	140	expect = XSTATE; }
8d063cd8	141	;
8d063cd8	142
a687059c	143	sideff : error
79072805	144	{ $$ = Nullop; }
a687059c	145	\| expr
79072805	146	{ $$ = $1; }
a687059c	147	\| expr IF expr
79072805	148	{ $$ = newLOGOP(OP_AND, 0, $3, $1); }
a687059c	149	\| expr UNLESS expr
79072805	150	{ $$ = newLOGOP(OP_OR, 0, $3, $1); }
a687059c	151	\| expr WHILE expr
8990e307	152	{ $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1); }
55497cff	153	\| expr UNTIL iexpr
55497cff	154	{ $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);}
79072805	155	;
	156
	157	else : /* NULL */
	158	{ $$ = Nullop; }
55497cff	159	\| ELSE mblock
79072805	160	{ $$ = scope($2); }
55497cff	161	\| ELSIF '(' mexpr ')' mblock else
79072805	162	{ copline = $1;
bbce6d69	163	$$ = newSTATEOP(0, Nullch,
bbce6d69	164	newCONDOP(0, $3, scope($5), $6));
4633a7c4	165	hints \|= HINT_BLOCK_SCOPE; }
79072805	166	;
79072805	167
55497cff	168	cond : IF '(' remember mexpr ')' mblock else
79072805	169	{ copline = $1;
36477c24	170	$$ = block_end($3,
bbce6d69	171	newCONDOP(0, $4, scope($6), $7)); }
55497cff	172	\| UNLESS '(' remember miexpr ')' mblock else
79072805	173	{ copline = $1;
36477c24	174	$$ = block_end($3,
bbce6d69	175	newCONDOP(0, $4, scope($6), $7)); }
79072805	176	;
	177
	178	cont : /* NULL */
	179	{ $$ = Nullop; }
	180	\| CONTINUE block
	181	{ $$ = scope($2); }
	182	;
	183
55497cff	184	loop : label WHILE '(' remember mtexpr ')' mblock cont
79072805	185	{ copline = $2;
36477c24	186	$$ = block_end($4,
55497cff	187	newSTATEOP(0, $1,
bbce6d69	188	newWHILEOP(0, 1, (LOOP*)Nullop,
bbce6d69	189	$5, $7, $8))); }
55497cff	190	\| label UNTIL '(' remember miexpr ')' mblock cont
79072805	191	{ copline = $2;
36477c24	192	$$ = block_end($4,
55497cff	193	newSTATEOP(0, $1,
bbce6d69	194	newWHILEOP(0, 1, (LOOP*)Nullop,
bbce6d69	195	$5, $7, $8))); }
bbce6d69	196	\| label FOR MY remember my_scalar '(' mexpr ')' mblock cont
36477c24	197	{ $$ = block_end($4,
bbce6d69	198	newFOROP(0, $1, $2, $5, $7, $9, $10)); }
bbce6d69	199	\| label FOR scalar '(' remember mexpr ')' mblock cont
36477c24	200	{ $$ = block_end($5,
bbce6d69	201	newFOROP(0, $1, $2, mod($3, OP_ENTERLOOP),
	202	$6, $8, $9)); }
	203	\| label FOR '(' remember mexpr ')' mblock cont
36477c24	204	{ $$ = block_end($4,
55497cff	205	newFOROP(0, $1, $2, Nullop, $5, $7, $8)); }
bbce6d69	206	\| label FOR '(' remember mnexpr ';' mtexpr ';' mnexpr ')' mblock
8d063cd8	207	/* basically fake up an initialize-while lineseq */
55497cff	208	{ copline = $2;
36477c24	209	$$ = block_end($4,
bbce6d69	210	append_elem(OP_LINESEQ, scalar($5),
	211	newSTATEOP(0, $1,
	212	newWHILEOP(0, 1, (LOOP*)Nullop,
	213	scalar($7),
	214	$11, scalar($9))))); }
79072805	215	\| label block cont /* a block is a loop that happens once */
79072805	216	{ $$ = newSTATEOP(0,
463ee0b2	217	$1, newWHILEOP(0, 1, (LOOP*)Nullop,
463ee0b2	218	Nullop, $2, $3)); }
8d063cd8	219	;
	220
	221	nexpr : /* NULL */
79072805	222	{ $$ = Nullop; }
8d063cd8	223	\| sideff
	224	;
	225
	226	texpr : /* NULL means true */
79072805	227	{ (void)scan_num("1"); $$ = yylval.opval; }
8d063cd8	228	\| expr
	229	;
	230
55497cff	231	iexpr : expr
	232	{ $$ = invert(scalar($1)); }
	233	;
	234
	235	mexpr : expr
bbce6d69	236	{ $$ = $1; intro_my(); }
	237	;
	238
	239	mnexpr : nexpr
	240	{ $$ = $1; intro_my(); }
55497cff	241	;
	242
	243	mtexpr : texpr
bbce6d69	244	{ $$ = $1; intro_my(); }
55497cff	245	;
	246
	247	miexpr : iexpr
bbce6d69	248	{ $$ = $1; intro_my(); }
55497cff	249	;
55497cff	250
8d063cd8	251	label : /* empty */
8d063cd8	252	{ $$ = Nullch; }
32c2e4fb	253	\| LABEL
8d063cd8	254	;
8d063cd8	255
8d063cd8	256	decl : format
	257	{ $$ = 0; }
	258	\| subrout
	259	{ $$ = 0; }
a687059c	260	\| package
a687059c	261	{ $$ = 0; }
a0d0e21e	262	\| use
85e6fe83	263	{ $$ = 0; }
8d063cd8	264	;
8d063cd8	265
a0d0e21e	266	format : FORMAT startsub WORD block
	267	{ newFORM($2, $3, $4); }
	268	\| FORMAT startsub block
	269	{ newFORM($2, Nullop, $3); }
8d063cd8	270	;
8d063cd8	271
4633a7c4	272	subrout : SUB startsub WORD proto block
	273	{ newSUB($2, $3, $4, $5); }
	274	\| SUB startsub WORD proto ';'
	275	{ newSUB($2, $3, $4, Nullop); expect = XSTATE; }
a0d0e21e	276	;
a0d0e21e	277
4633a7c4	278	proto : /* NULL */
	279	{ $$ = Nullop; }
	280	\| THING
	281	;
	282
a0d0e21e	283	startsub: /* NULL / / start a subroutine scope */
a0d0e21e	284	{ $$ = start_subparse(); }
8d063cd8	285	;
8d063cd8	286
a687059c	287	package : PACKAGE WORD ';'
79072805	288	{ package($2); }
93a17b20	289	\| PACKAGE ';'
93a17b20	290	{ package(Nullop); }
a687059c	291	;
a687059c	292
62ac1c99	293	use : USE startsub WORD WORD listexpr ';'
62ac1c99	294	{ utilize($1, $2, $3, $4, $5); }
85e6fe83	295	;
85e6fe83	296
a0d0e21e	297	expr : expr ANDOP expr
	298	{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
	299	\| expr OROP expr
	300	{ $$ = newLOGOP($2, 0, $1, $3); }
a0d0e21e	301	\| argexpr
	302	;
	303
	304	argexpr : argexpr ','
	305	{ $$ = $1; }
	306	\| argexpr ',' term
79072805	307	{ $$ = append_elem(OP_LIST, $1, $3); }
a0d0e21e	308	\| term
8d063cd8	309	;
8d063cd8	310
a0d0e21e	311	listop : LSTOP indirob argexpr
79072805	312	{ $$ = convert($1, OPf_STACKED,
a0d0e21e	313	prepend_elem(OP_LIST, newGVREF($1,$2), $3) ); }
a0d0e21e	314	\| FUNC '(' indirob expr ')'
79072805	315	{ $$ = convert($1, OPf_STACKED,
a0d0e21e	316	prepend_elem(OP_LIST, newGVREF($1,$3), $4) ); }
a0d0e21e	317	\| term ARROW method '(' listexprcom ')'
4633a7c4	318	{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e	319	append_elem(OP_LIST,
55497cff	320	prepend_elem(OP_LIST, scalar($1), $5),
a0d0e21e	321	newUNOP(OP_METHOD, 0, $3))); }
79072805	322	\| METHOD indirob listexpr
4633a7c4	323	{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e	324	append_elem(OP_LIST,
4633a7c4	325	prepend_elem(OP_LIST, $2, $3),
a0d0e21e	326	newUNOP(OP_METHOD, 0, $1))); }
a0d0e21e	327	\| FUNCMETH indirob '(' listexprcom ')'
4633a7c4	328	{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
a0d0e21e	329	append_elem(OP_LIST,
4633a7c4	330	prepend_elem(OP_LIST, $2, $4),
a0d0e21e	331	newUNOP(OP_METHOD, 0, $1))); }
79072805	332	\| LSTOP listexpr
79072805	333	{ $$ = convert($1, 0, $2); }
a0d0e21e	334	\| FUNC '(' listexprcom ')'
79072805	335	{ $$ = convert($1, 0, $3); }
4633a7c4	336	\| LSTOPSUB startsub block listexpr %prec LSTOP
	337	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
	338	append_elem(OP_LIST,
	339	prepend_elem(OP_LIST, newANONSUB($2, 0, $3), $4),
	340	$1)); }
a687059c	341	;
a687059c	342
a0d0e21e	343	method : METHOD
	344	\| scalar
	345	;
	346
	347	term : term ASSIGNOP term
	348	{ $$ = newASSIGNOP(OPf_STACKED, $1, $2, $3); }
	349	\| term POWOP term
79072805	350	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	351	\| term MULOP term
79072805	352	{ if ($2 != OP_REPEAT)
	353	scalar($1);
	354	$$ = newBINOP($2, 0, $1, scalar($3)); }
a0d0e21e	355	\| term ADDOP term
79072805	356	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	357	\| term SHIFTOP term
79072805	358	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	359	\| term RELOP term
79072805	360	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	361	\| term EQOP term
79072805	362	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	363	\| term BITANDOP term
79072805	364	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	365	\| term BITOROP term
79072805	366	{ $$ = newBINOP($2, 0, scalar($1), scalar($3)); }
a0d0e21e	367	\| term DOTDOT term
79072805	368	{ $$ = newRANGE($2, scalar($1), scalar($3));}
a0d0e21e	369	\| term ANDAND term
463ee0b2	370	{ $$ = newLOGOP(OP_AND, 0, $1, $3); }
a0d0e21e	371	\| term OROR term
463ee0b2	372	{ $$ = newLOGOP(OP_OR, 0, $1, $3); }
a0d0e21e	373	\| term '?' term ':' term
79072805	374	{ $$ = newCONDOP(0, $1, $3, $5); }
a0d0e21e	375	\| term MATCHOP term
79072805	376	{ $$ = bind_match($2, $1, $3); }
8d063cd8	377
a0d0e21e	378	\| '-' term %prec UMINUS
79072805	379	{ $$ = newUNOP(OP_NEGATE, 0, scalar($2)); }
a687059c	380	\| '+' term %prec UMINUS
a687059c	381	{ $$ = $2; }
8d063cd8	382	\| '!' term
79072805	383	{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
8d063cd8	384	\| '~' term
79072805	385	{ $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));}
79072805	386	\| REFGEN term
a0d0e21e	387	{ $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN)); }
79072805	388	\| term POSTINC
79072805	389	{ $$ = newUNOP(OP_POSTINC, 0,
463ee0b2	390	mod(scalar($1), OP_POSTINC)); }
79072805	391	\| term POSTDEC
79072805	392	{ $$ = newUNOP(OP_POSTDEC, 0,
463ee0b2	393	mod(scalar($1), OP_POSTDEC)); }
79072805	394	\| PREINC term
79072805	395	{ $$ = newUNOP(OP_PREINC, 0,
463ee0b2	396	mod(scalar($2), OP_PREINC)); }
79072805	397	\| PREDEC term
79072805	398	{ $$ = newUNOP(OP_PREDEC, 0,
463ee0b2	399	mod(scalar($2), OP_PREDEC)); }
55497cff	400	\| local term %prec UNIOP
93a17b20	401	{ $$ = localize($2,$1); }
a0d0e21e	402	\| '(' expr ')'
79072805	403	{ $$ = sawparens($2); }
8d063cd8	404	\| '(' ')'
8990e307	405	{ $$ = sawparens(newNULLLIST()); }
a0d0e21e	406	\| '[' expr ']' %prec '('
79072805	407	{ $$ = newANONLIST($2); }
	408	\| '[' ']' %prec '('
	409	{ $$ = newANONLIST(Nullop); }
a0d0e21e	410	\| HASHBRACK expr ';' '}' %prec '('
79072805	411	{ $$ = newANONHASH($2); }
	412	\| HASHBRACK ';' '}' %prec '('
	413	{ $$ = newANONHASH(Nullop); }
4633a7c4	414	\| ANONSUB startsub proto block %prec '('
4633a7c4	415	{ $$ = newANONSUB($2, $3, $4); }
79072805	416	\| scalar %prec '('
8d063cd8	417	{ $$ = $1; }
c07a80fd	418	\| star '{' expr ';' '}'
c07a80fd	419	{ $$ = newBINOP(OP_GELEM, 0, newGVREF(0,$1), $3); }
79072805	420	\| star %prec '('
8d063cd8	421	{ $$ = $1; }
79072805	422	\| scalar '[' expr ']' %prec '('
	423	{ $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3)); }
	424	\| term ARROW '[' expr ']' %prec '('
	425	{ $$ = newBINOP(OP_AELEM, 0,
8990e307	426	ref(newAVREF($1),OP_RV2AV),
79072805	427	scalar($4));}
463ee0b2	428	\| term '[' expr ']' %prec '('
a0d0e21e	429	{ assertref($1); $$ = newBINOP(OP_AELEM, 0,
8990e307	430	ref(newAVREF($1),OP_RV2AV),
463ee0b2	431	scalar($3));}
79072805	432	\| hsh %prec '('
8d063cd8	433	{ $$ = $1; }
79072805	434	\| ary %prec '('
8d063cd8	435	{ $$ = $1; }
79072805	436	\| arylen %prec '('
	437	{ $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
	438	\| scalar '{' expr ';' '}' %prec '('
	439	{ $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
	440	expect = XOPERATOR; }
	441	\| term ARROW '{' expr ';' '}' %prec '('
	442	{ $$ = newBINOP(OP_HELEM, 0,
8990e307	443	ref(newHVREF($1),OP_RV2HV),
79072805	444	jmaybe($4));
79072805	445	expect = XOPERATOR; }
463ee0b2	446	\| term '{' expr ';' '}' %prec '('
a0d0e21e	447	{ assertref($1); $$ = newBINOP(OP_HELEM, 0,
8990e307	448	ref(newHVREF($1),OP_RV2HV),
463ee0b2	449	jmaybe($3));
463ee0b2	450	expect = XOPERATOR; }
a0d0e21e	451	\| '(' expr ')' '[' expr ']' %prec '('
79072805	452	{ $$ = newSLICEOP(0, $5, $2); }
	453	\| '(' ')' '[' expr ']' %prec '('
	454	{ $$ = newSLICEOP(0, $4, Nullop); }
	455	\| ary '[' expr ']' %prec '('
	456	{ $$ = prepend_elem(OP_ASLICE,
	457	newOP(OP_PUSHMARK, 0),
79072805	458	newLISTOP(OP_ASLICE, 0,
79072805	459	list($3),
a0d0e21e	460	ref($1, OP_ASLICE))); }
79072805	461	\| ary '{' expr ';' '}' %prec '('
	462	{ $$ = prepend_elem(OP_HSLICE,
	463	newOP(OP_PUSHMARK, 0),
79072805	464	newLISTOP(OP_HSLICE, 0,
79072805	465	list($3),
a0d0e21e	466	ref(oopsHV($1), OP_HSLICE)));
79072805	467	expect = XOPERATOR; }
	468	\| THING %prec '('
	469	{ $$ = $1; }
	470	\| amper
c07a80fd	471	{ $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
79072805	472	\| amper '(' ')'
a0d0e21e	473	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
	474	\| amper '(' expr ')'
	475	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
4633a7c4	476	append_elem(OP_LIST, $3, scalar($1))); }
93a17b20	477	\| NOAMP WORD listexpr
a0d0e21e	478	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
a5f75d66	479	append_elem(OP_LIST, $3, scalar($2))); }
a0d0e21e	480	\| DO term %prec UNIOP
463ee0b2	481	{ $$ = newUNOP(OP_DOFILE, 0, scalar($2)); }
79072805	482	\| DO block %prec '('
79072805	483	{ $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2)); }
8d063cd8	484	\| DO WORD '(' ')'
c07a80fd	485	{ $$ = newUNOP(OP_ENTERSUB,
c07a80fd	486	OPf_SPECIAL\|OPf_STACKED,
4633a7c4	487	prepend_elem(OP_LIST,
c07a80fd	488	scalar(newCVREF(
	489	(OPpENTERSUB_AMPER<<8),
	490	scalar($2)
	491	)),Nullop)); dep();}
a0d0e21e	492	\| DO WORD '(' expr ')'
c07a80fd	493	{ $$ = newUNOP(OP_ENTERSUB,
c07a80fd	494	OPf_SPECIAL\|OPf_STACKED,
4633a7c4	495	append_elem(OP_LIST,
a0d0e21e	496	$4,
c07a80fd	497	scalar(newCVREF(
	498	(OPpENTERSUB_AMPER<<8),
	499	scalar($2)
	500	)))); dep();}
79072805	501	\| DO scalar '(' ')'
a0d0e21e	502	{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL\|OPf_STACKED,
4633a7c4	503	prepend_elem(OP_LIST,
c07a80fd	504	scalar(newCVREF(0,scalar($2))), Nullop)); dep();}
a0d0e21e	505	\| DO scalar '(' expr ')'
a0d0e21e	506	{ $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL\|OPf_STACKED,
4633a7c4	507	prepend_elem(OP_LIST,
a0d0e21e	508	$4,
c07a80fd	509	scalar(newCVREF(0,scalar($2))))); dep();}
8d063cd8	510	\| LOOPEX
85e6fe83	511	{ $$ = newOP($1, OPf_SPECIAL);
85e6fe83	512	hints \|= HINT_BLOCK_SCOPE; }
a0d0e21e	513	\| LOOPEX term
8990e307	514	{ $$ = newLOOPEX($1,$2); }
c07a80fd	515	\| NOTOP argexpr
c07a80fd	516	{ $$ = newUNOP(OP_NOT, 0, scalar($2)); }
8d063cd8	517	\| UNIOP
79072805	518	{ $$ = newOP($1, 0); }
f0fcb552	519	\| UNIOP block
79072805	520	{ $$ = newUNOP($1, 0, $2); }
a0d0e21e	521	\| UNIOP term
79072805	522	{ $$ = newUNOP($1, 0, $2); }
4633a7c4	523	\| UNIOPSUB term
	524	{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
	525	append_elem(OP_LIST, $2, scalar($1))); }
8d063cd8	526	\| FUNC0
79072805	527	{ $$ = newOP($1, 0); }
ae986130	528	\| FUNC0 '(' ')'
79072805	529	{ $$ = newOP($1, 0); }
4633a7c4	530	\| FUNC0SUB
	531	{ $$ = newUNOP(OP_ENTERSUB, 0,
	532	scalar($1)); }
03a14243	533	\| FUNC1 '(' ')'
79072805	534	{ $$ = newOP($1, OPf_SPECIAL); }
8d063cd8	535	\| FUNC1 '(' expr ')'
79072805	536	{ $$ = newUNOP($1, 0, $3); }
a0d0e21e	537	\| PMFUNC '(' term ')'
79072805	538	{ $$ = pmruntime($1, $3, Nullop); }
a0d0e21e	539	\| PMFUNC '(' term ',' term ')'
79072805	540	{ $$ = pmruntime($1, $3, $5); }
79072805	541	\| WORD
378cc40b	542	\| listop
8d063cd8	543	;
8d063cd8	544
79072805	545	listexpr: /* NULL */
8990e307	546	{ $$ = Nullop; }
a0d0e21e	547	\| argexpr
	548	{ $$ = $1; }
	549	;
	550
	551	listexprcom: /* NULL */
	552	{ $$ = Nullop; }
79072805	553	\| expr
79072805	554	{ $$ = $1; }
a0d0e21e	555	\| expr ','
a0d0e21e	556	{ $$ = $1; }
79072805	557	;
79072805	558
55497cff	559	local : LOCAL { $$ = 0; }
	560	\| MY { $$ = 1; }
	561	;
	562
	563	my_scalar: scalar
	564	{ in_my = 0; $$ = my($1); }
	565	;
	566
79072805	567	amper : '&' indirob
c07a80fd	568	{ $$ = newCVREF($1,$2); }
a687059c	569	;
a687059c	570
79072805	571	scalar : '$' indirob
79072805	572	{ $$ = newSVREF($2); }
a687059c	573	;
a687059c	574
79072805	575	ary : '@' indirob
	576	{ $$ = newAVREF($2); }
	577	;
	578
	579	hsh : '%' indirob
	580	{ $$ = newHVREF($2); }
	581	;
	582
	583	arylen : DOLSHARP indirob
	584	{ $$ = newAVREF($2); }
	585	;
	586
	587	star : '*' indirob
a0d0e21e	588	{ $$ = newGVREF(0,$2); }
79072805	589	;
	590
	591	indirob : WORD
	592	{ $$ = scalar($1); }
	593	\| scalar
463ee0b2	594	{ $$ = scalar($1); }
79072805	595	\| block
a0d0e21e	596	{ $$ = scope($1); }
79072805	597
93a17b20	598	\| PRIVATEREF
93a17b20	599	{ $$ = $1; }
8d063cd8	600	;
	601
	602	%% /* PROGRAM */