[p5sagit/p5-mst-13.2.git] / x2p / a2p.y

%{
/* $RCSfile: a2p.y,v $$Revision: 4.0.1.1 $$Date: 91/06/07 12:12:41 $
 *
 *    Copyright (c) 1991, 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.
 *
 * $Log:	a2p.y,v $
 * Revision 4.0.1.1  91/06/07  12:12:41  lwall
 * patch4: new copyright notice
 * 
 * Revision 4.0  91/03/20  01:57:21  lwall
 * 4.0 baseline.
 * 
 */

#include "INTERN.h"
#include "a2p.h"

int root;
int begins = Nullop;
int ends = Nullop;

%}
%token BEGIN END
%token REGEX
%token SEMINEW NEWLINE COMMENT
%token FUN1 FUNN GRGR
%token PRINT PRINTF SPRINTF SPLIT
%token IF ELSE WHILE FOR IN
%token EXIT NEXT BREAK CONTINUE RET
%token GETLINE DO SUB GSUB MATCH
%token FUNCTION USERFUN DELETE

%right ASGNOP
%right '?' ':'
%left OROR
%left ANDAND
%left IN
%left NUMBER VAR SUBSTR INDEX
%left MATCHOP
%left RELOP '<' '>'
%left OR
%left STRING
%left '+' '-'
%left '*' '/' '%'
%right UMINUS
%left NOT
%right '^'
%left INCR DECR
%left FIELD VFIELD

%%

program	: junk hunks
		{ root = oper4(OPROG,$1,begins,$2,ends); }
	;

begin	: BEGIN '{' maybe states '}' junk
		{ begins = oper4(OJUNK,begins,$3,$4,$6); in_begin = FALSE;
		    $$ = Nullop; }
	;

end	: END '{' maybe states '}'
		{ ends = oper3(OJUNK,ends,$3,$4); $$ = Nullop; }
	| end NEWLINE
		{ $$ = $1; }
	;

hunks	: hunks hunk junk
		{ $$ = oper3(OHUNKS,$1,$2,$3); }
	| /* NULL */
		{ $$ = Nullop; }
	;

hunk	: patpat
		{ $$ = oper1(OHUNK,$1); need_entire = TRUE; }
	| patpat '{' maybe states '}'
		{ $$ = oper2(OHUNK,$1,oper2(OJUNK,$3,$4)); }
	| FUNCTION USERFUN '(' arg_list ')' maybe '{' maybe states '}'
		{ fixfargs($2,$4,0); $$ = oper5(OUSERDEF,$2,$4,$6,$8,$9); }
	| '{' maybe states '}'
		{ $$ = oper2(OHUNK,Nullop,oper2(OJUNK,$2,$3)); }
	| begin
	| end
	;

arg_list: expr_list
		{ $$ = rememberargs($$); }
	;

patpat	: cond
		{ $$ = oper1(OPAT,$1); }
	| cond ',' cond
		{ $$ = oper2(ORANGE,$1,$3); }
	;

cond	: expr
	| match
	| rel
	| compound_cond
	;

compound_cond
	: '(' compound_cond ')'
		{ $$ = oper1(OCPAREN,$2); }
	| cond ANDAND maybe cond
		{ $$ = oper3(OCANDAND,$1,$3,$4); }
	| cond OROR maybe cond
		{ $$ = oper3(OCOROR,$1,$3,$4); }
	| NOT cond
		{ $$ = oper1(OCNOT,$2); }
	;

rel	: expr RELOP expr
		{ $$ = oper3(ORELOP,$2,$1,$3); }
	| expr '>' expr
		{ $$ = oper3(ORELOP,string(">",1),$1,$3); }
	| expr '<' expr
		{ $$ = oper3(ORELOP,string("<",1),$1,$3); }
	| '(' rel ')'
		{ $$ = oper1(ORPAREN,$2); }
	;

match	: expr MATCHOP expr
		{ $$ = oper3(OMATCHOP,$2,$1,$3); }
	| expr MATCHOP REGEX
		{ $$ = oper3(OMATCHOP,$2,$1,oper1(OREGEX,$3)); }
	| REGEX		%prec MATCHOP
		{ $$ = oper1(OREGEX,$1); }
	| '(' match ')'
		{ $$ = oper1(OMPAREN,$2); }
	;

expr	: term
		{ $$ = $1; }
	| expr term
		{ $$ = oper2(OCONCAT,$1,$2); }
	| variable ASGNOP cond
		{ $$ = oper3(OASSIGN,$2,$1,$3);
			if ((ops[$1].ival & 255) == OFLD)
			    lval_field = TRUE;
			if ((ops[$1].ival & 255) == OVFLD)
			    lval_field = TRUE;
		}
	;

term	: variable
		{ $$ = $1; }
	| NUMBER
		{ $$ = oper1(ONUM,$1); }
	| STRING
		{ $$ = oper1(OSTR,$1); }
	| term '+' term
		{ $$ = oper2(OADD,$1,$3); }
	| term '-' term
		{ $$ = oper2(OSUBTRACT,$1,$3); }
	| term '*' term
		{ $$ = oper2(OMULT,$1,$3); }
	| term '/' term
		{ $$ = oper2(ODIV,$1,$3); }
	| term '%' term
		{ $$ = oper2(OMOD,$1,$3); }
	| term '^' term
		{ $$ = oper2(OPOW,$1,$3); }
	| term IN VAR
		{ $$ = oper2(ODEFINED,aryrefarg($3),$1); }
	| term '?' term ':' term
		{ $$ = oper3(OCOND,$1,$3,$5); }
	| variable INCR
		{ $$ = oper1(OPOSTINCR,$1); }
	| variable DECR
		{ $$ = oper1(OPOSTDECR,$1); }
	| INCR variable
		{ $$ = oper1(OPREINCR,$2); }
	| DECR variable
		{ $$ = oper1(OPREDECR,$2); }
	| '-' term %prec UMINUS
		{ $$ = oper1(OUMINUS,$2); }
	| '+' term %prec UMINUS
		{ $$ = oper1(OUPLUS,$2); }
	| '(' cond ')'
		{ $$ = oper1(OPAREN,$2); }
	| GETLINE
		{ $$ = oper0(OGETLINE); }
	| GETLINE VAR
		{ $$ = oper1(OGETLINE,$2); }
	| GETLINE '<' expr
		{ $$ = oper3(OGETLINE,Nullop,string("<",1),$3);
		    if (ops[$3].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| GETLINE VAR '<' expr
		{ $$ = oper3(OGETLINE,$2,string("<",1),$4);
		    if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| term 'p' GETLINE
		{ $$ = oper3(OGETLINE,Nullop,string("|",1),$1);
		    if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| term 'p' GETLINE VAR
		{ $$ = oper3(OGETLINE,$4,string("|",1),$1);
		    if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| FUN1
		{ $$ = oper0($1); need_entire = do_chop = TRUE; }
	| FUN1 '(' ')'
		{ $$ = oper1($1,Nullop); need_entire = do_chop = TRUE; }
	| FUN1 '(' expr ')'
		{ $$ = oper1($1,$3); }
	| FUNN '(' expr_list ')'
		{ $$ = oper1($1,$3); }
	| USERFUN '(' expr_list ')'
		{ $$ = oper2(OUSERFUN,$1,$3); }
	| SPRINTF expr_list
		{ $$ = oper1(OSPRINTF,$2); }
	| SUBSTR '(' expr ',' expr ',' expr ')'
		{ $$ = oper3(OSUBSTR,$3,$5,$7); }
	| SUBSTR '(' expr ',' expr ')'
		{ $$ = oper2(OSUBSTR,$3,$5); }
	| SPLIT '(' expr ',' VAR ',' expr ')'
		{ $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),$7); }
	| SPLIT '(' expr ',' VAR ',' REGEX ')'
		{ $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),oper1(OREGEX,$7));}
	| SPLIT '(' expr ',' VAR ')'
		{ $$ = oper2(OSPLIT,$3,aryrefarg(numary($5))); }
	| INDEX '(' expr ',' expr ')'
		{ $$ = oper2(OINDEX,$3,$5); }
	| MATCH '(' expr ',' REGEX ')'
		{ $$ = oper2(OMATCH,$3,oper1(OREGEX,$5)); }
	| MATCH '(' expr ',' expr ')'
		{ $$ = oper2(OMATCH,$3,$5); }
	| SUB '(' expr ',' expr ')'
		{ $$ = oper2(OSUB,$3,$5); }
	| SUB '(' REGEX ',' expr ')'
		{ $$ = oper2(OSUB,oper1(OREGEX,$3),$5); }
	| GSUB '(' expr ',' expr ')'
		{ $$ = oper2(OGSUB,$3,$5); }
	| GSUB '(' REGEX ',' expr ')'
		{ $$ = oper2(OGSUB,oper1(OREGEX,$3),$5); }
	| SUB '(' expr ',' expr ',' expr ')'
		{ $$ = oper3(OSUB,$3,$5,$7); }
	| SUB '(' REGEX ',' expr ',' expr ')'
		{ $$ = oper3(OSUB,oper1(OREGEX,$3),$5,$7); }
	| GSUB '(' expr ',' expr ',' expr ')'
		{ $$ = oper3(OGSUB,$3,$5,$7); }
	| GSUB '(' REGEX ',' expr ',' expr ')'
		{ $$ = oper3(OGSUB,oper1(OREGEX,$3),$5,$7); }
	;

variable: VAR
		{ $$ = oper1(OVAR,$1); }
	| VAR '[' expr_list ']'
		{ $$ = oper2(OVAR,aryrefarg($1),$3); }
	| FIELD
		{ $$ = oper1(OFLD,$1); }
	| VFIELD term
		{ $$ = oper1(OVFLD,$2); }
	;

expr_list
	: expr
	| clist
	| /* NULL */
		{ $$ = Nullop; }
	;

clist	: expr ',' maybe expr
		{ $$ = oper3(OCOMMA,$1,$3,$4); }
	| clist ',' maybe expr
		{ $$ = oper3(OCOMMA,$1,$3,$4); }
	| '(' clist ')'		/* these parens are invisible */
		{ $$ = $2; }
	;

junk	: junk hunksep
		{ $$ = oper2(OJUNK,$1,$2); }
	| /* NULL */
		{ $$ = Nullop; }
	;

hunksep : ';'
		{ $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
	| SEMINEW
		{ $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
	| NEWLINE
		{ $$ = oper0(ONEWLINE); }
	| COMMENT
		{ $$ = oper1(OCOMMENT,$1); }
	;

maybe	: maybe nlstuff
		{ $$ = oper2(OJUNK,$1,$2); }
	| /* NULL */
		{ $$ = Nullop; }
	;

nlstuff : NEWLINE
		{ $$ = oper0(ONEWLINE); }
	| COMMENT
		{ $$ = oper1(OCOMMENT,$1); }
	;

separator
	: ';' maybe
		{ $$ = oper2(OJUNK,oper0(OSEMICOLON),$2); }
	| SEMINEW maybe
		{ $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
	| NEWLINE maybe
		{ $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
	| COMMENT maybe
		{ $$ = oper2(OJUNK,oper1(OSCOMMENT,$1),$2); }
	;

states	: states statement
		{ $$ = oper2(OSTATES,$1,$2); }
	| /* NULL */
		{ $$ = Nullop; }
	;

statement
	: simple separator maybe
		{ $$ = oper2(OJUNK,oper2(OSTATE,$1,$2),$3); }
	| ';' maybe
		{ $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSEMICOLON),$2)); }
	| SEMINEW maybe
		{ $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSNEWLINE),$2)); }
	| compound
	;

simpnull: simple
	| /* NULL */
		{ $$ = Nullop; }
	;

simple
	: expr
	| PRINT expr_list redir expr
		{ $$ = oper3(OPRINT,$2,$3,$4);
		    do_opens = TRUE;
		    saw_ORS = saw_OFS = TRUE;
		    if (!$2) need_entire = TRUE;
		    if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| PRINT expr_list
		{ $$ = oper1(OPRINT,$2);
		    if (!$2) need_entire = TRUE;
		    saw_ORS = saw_OFS = TRUE;
		}
	| PRINTF expr_list redir expr
		{ $$ = oper3(OPRINTF,$2,$3,$4);
		    do_opens = TRUE;
		    if (!$2) need_entire = TRUE;
		    if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| PRINTF expr_list
		{ $$ = oper1(OPRINTF,$2);
		    if (!$2) need_entire = TRUE;
		}
	| BREAK
		{ $$ = oper0(OBREAK); }
	| NEXT
		{ $$ = oper0(ONEXT); }
	| EXIT
		{ $$ = oper0(OEXIT); }
	| EXIT expr
		{ $$ = oper1(OEXIT,$2); }
	| CONTINUE
		{ $$ = oper0(OCONTINUE); }
	| RET
		{ $$ = oper0(ORETURN); }
	| RET expr
		{ $$ = oper1(ORETURN,$2); }
	| DELETE VAR '[' expr ']'
		{ $$ = oper2(ODELETE,aryrefarg($2),$4); }
	;

redir	: '>'	%prec FIELD
		{ $$ = oper1(OREDIR,string(">",1)); }
	| GRGR
		{ $$ = oper1(OREDIR,string(">>",2)); }
	| '|'
		{ $$ = oper1(OREDIR,string("|",1)); }
	;

compound
	: IF '(' cond ')' maybe statement
		{ $$ = oper2(OIF,$3,bl($6,$5)); }
	| IF '(' cond ')' maybe statement ELSE maybe statement
		{ $$ = oper3(OIF,$3,bl($6,$5),bl($9,$8)); }
	| WHILE '(' cond ')' maybe statement
		{ $$ = oper2(OWHILE,$3,bl($6,$5)); }
	| DO maybe statement WHILE '(' cond ')'
		{ $$ = oper2(ODO,bl($3,$2),$6); }
	| FOR '(' simpnull ';' cond ';' simpnull ')' maybe statement
		{ $$ = oper4(OFOR,$3,$5,$7,bl($10,$9)); }
	| FOR '(' simpnull ';'  ';' simpnull ')' maybe statement
		{ $$ = oper4(OFOR,$3,string("",0),$6,bl($9,$8)); }
	| FOR '(' expr ')' maybe statement
		{ $$ = oper2(OFORIN,$3,bl($6,$5)); }
	| '{' maybe states '}' maybe
		{ $$ = oper3(OBLOCK,oper2(OJUNK,$2,$3),Nullop,$5); }
	;

%%
#include "a2py.c"
Commit	Line	Data
8d063cd8	1	%{
2b317908	2	/* $RCSfile: a2p.y,v $$Revision: 4.0.1.1 $$Date: 91/06/07 12:12:41 $
a687059c	3	*
2b317908	4	* Copyright (c) 1991, Larry Wall
a687059c	5	*
2b317908	6	* You may distribute under the terms of either the GNU General Public
2b317908	7	* License or the Artistic License, as specified in the README file.
8d063cd8	8	*
8d063cd8	9	* $Log: a2p.y,v $
2b317908	10	* Revision 4.0.1.1 91/06/07 12:12:41 lwall
	11	* patch4: new copyright notice
	12	*
fe14fcc3	13	* Revision 4.0 91/03/20 01:57:21 lwall
fe14fcc3	14	* 4.0 baseline.
8d063cd8	15	*
	16	*/
	17
	18	#include "INTERN.h"
	19	#include "a2p.h"
	20
	21	int root;
a687059c	22	int begins = Nullop;
a687059c	23	int ends = Nullop;
8d063cd8	24
	25	%}
	26	%token BEGIN END
	27	%token REGEX
	28	%token SEMINEW NEWLINE COMMENT
a687059c	29	%token FUN1 FUNN GRGR
8d063cd8	30	%token PRINT PRINTF SPRINTF SPLIT
8d063cd8	31	%token IF ELSE WHILE FOR IN
a687059c	32	%token EXIT NEXT BREAK CONTINUE RET
	33	%token GETLINE DO SUB GSUB MATCH
	34	%token FUNCTION USERFUN DELETE
8d063cd8	35
8d063cd8	36	%right ASGNOP
a687059c	37	%right '?' ':'
8d063cd8	38	%left OROR
8d063cd8	39	%left ANDAND
a687059c	40	%left IN
8d063cd8	41	%left NUMBER VAR SUBSTR INDEX
a687059c	42	%left MATCHOP
a687059c	43	%left RELOP '<' '>'
8d063cd8	44	%left OR
	45	%left STRING
	46	%left '+' '-'
	47	%left '*' '/' '%'
	48	%right UMINUS
a687059c	49	%left NOT
a687059c	50	%right '^'
8d063cd8	51	%left INCR DECR
	52	%left FIELD VFIELD
	53
	54	%%
	55
a687059c	56	program : junk hunks
a687059c	57	{ root = oper4(OPROG,$1,begins,$2,ends); }
8d063cd8	58	;
8d063cd8	59
378cc40b	60	begin : BEGIN '{' maybe states '}' junk
a687059c	61	{ begins = oper4(OJUNK,begins,$3,$4,$6); in_begin = FALSE;
a687059c	62	$$ = Nullop; }
8d063cd8	63	;
8d063cd8	64
378cc40b	65	end : END '{' maybe states '}'
a687059c	66	{ ends = oper3(OJUNK,ends,$3,$4); $$ = Nullop; }
8d063cd8	67	\| end NEWLINE
8d063cd8	68	{ $$ = $1; }
8d063cd8	69	;
	70
	71	hunks : hunks hunk junk
	72	{ $$ = oper3(OHUNKS,$1,$2,$3); }
	73	\| /* NULL */
	74	{ $$ = Nullop; }
	75	;
	76
	77	hunk : patpat
	78	{ $$ = oper1(OHUNK,$1); need_entire = TRUE; }
378cc40b	79	\| patpat '{' maybe states '}'
378cc40b	80	{ $$ = oper2(OHUNK,$1,oper2(OJUNK,$3,$4)); }
a687059c	81	\| FUNCTION USERFUN '(' arg_list ')' maybe '{' maybe states '}'
a687059c	82	{ fixfargs($2,$4,0); $$ = oper5(OUSERDEF,$2,$4,$6,$8,$9); }
378cc40b	83	\| '{' maybe states '}'
378cc40b	84	{ $$ = oper2(OHUNK,Nullop,oper2(OJUNK,$2,$3)); }
a687059c	85	\| begin
	86	\| end
	87	;
	88
	89	arg_list: expr_list
	90	{ $$ = rememberargs($$); }
8d063cd8	91	;
8d063cd8	92
449aadca	93	patpat : cond
8d063cd8	94	{ $$ = oper1(OPAT,$1); }
449aadca	95	\| cond ',' cond
8d063cd8	96	{ $$ = oper2(ORANGE,$1,$3); }
	97	;
	98
8d063cd8	99	cond : expr
	100	\| match
	101	\| rel
	102	\| compound_cond
	103	;
	104
	105	compound_cond
	106	: '(' compound_cond ')'
	107	{ $$ = oper1(OCPAREN,$2); }
a687059c	108	\| cond ANDAND maybe cond
	109	{ $$ = oper3(OCANDAND,$1,$3,$4); }
	110	\| cond OROR maybe cond
	111	{ $$ = oper3(OCOROR,$1,$3,$4); }
8d063cd8	112	\| NOT cond
	113	{ $$ = oper1(OCNOT,$2); }
	114	;
	115
	116	rel : expr RELOP expr
	117	{ $$ = oper3(ORELOP,$2,$1,$3); }
a687059c	118	\| expr '>' expr
	119	{ $$ = oper3(ORELOP,string(">",1),$1,$3); }
	120	\| expr '<' expr
	121	{ $$ = oper3(ORELOP,string("<",1),$1,$3); }
8d063cd8	122	\| '(' rel ')'
	123	{ $$ = oper1(ORPAREN,$2); }
	124	;
	125
a687059c	126	match : expr MATCHOP expr
	127	{ $$ = oper3(OMATCHOP,$2,$1,$3); }
	128	\| expr MATCHOP REGEX
378cc40b	129	{ $$ = oper3(OMATCHOP,$2,$1,oper1(OREGEX,$3)); }
a687059c	130	\| REGEX %prec MATCHOP
a687059c	131	{ $$ = oper1(OREGEX,$1); }
8d063cd8	132	\| '(' match ')'
	133	{ $$ = oper1(OMPAREN,$2); }
	134	;
	135
	136	expr : term
	137	{ $$ = $1; }
	138	\| expr term
	139	{ $$ = oper2(OCONCAT,$1,$2); }
87250799	140	\| variable ASGNOP cond
8d063cd8	141	{ $$ = oper3(OASSIGN,$2,$1,$3);
	142	if ((ops[$1].ival & 255) == OFLD)
	143	lval_field = TRUE;
	144	if ((ops[$1].ival & 255) == OVFLD)
	145	lval_field = TRUE;
	146	}
	147	;
	148
	149	term : variable
	150	{ $$ = $1; }
a687059c	151	\| NUMBER
	152	{ $$ = oper1(ONUM,$1); }
	153	\| STRING
	154	{ $$ = oper1(OSTR,$1); }
8d063cd8	155	\| term '+' term
	156	{ $$ = oper2(OADD,$1,$3); }
	157	\| term '-' term
a687059c	158	{ $$ = oper2(OSUBTRACT,$1,$3); }
8d063cd8	159	\| term '*' term
	160	{ $$ = oper2(OMULT,$1,$3); }
	161	\| term '/' term
	162	{ $$ = oper2(ODIV,$1,$3); }
	163	\| term '%' term
	164	{ $$ = oper2(OMOD,$1,$3); }
a687059c	165	\| term '^' term
	166	{ $$ = oper2(OPOW,$1,$3); }
	167	\| term IN VAR
	168	{ $$ = oper2(ODEFINED,aryrefarg($3),$1); }
	169	\| term '?' term ':' term
87250799	170	{ $$ = oper3(OCOND,$1,$3,$5); }
8d063cd8	171	\| variable INCR
	172	{ $$ = oper1(OPOSTINCR,$1); }
	173	\| variable DECR
	174	{ $$ = oper1(OPOSTDECR,$1); }
	175	\| INCR variable
	176	{ $$ = oper1(OPREINCR,$2); }
	177	\| DECR variable
	178	{ $$ = oper1(OPREDECR,$2); }
	179	\| '-' term %prec UMINUS
	180	{ $$ = oper1(OUMINUS,$2); }
	181	\| '+' term %prec UMINUS
	182	{ $$ = oper1(OUPLUS,$2); }
449aadca	183	\| '(' cond ')'
8d063cd8	184	{ $$ = oper1(OPAREN,$2); }
	185	\| GETLINE
	186	{ $$ = oper0(OGETLINE); }
a687059c	187	\| GETLINE VAR
	188	{ $$ = oper1(OGETLINE,$2); }
	189	\| GETLINE '<' expr
	190	{ $$ = oper3(OGETLINE,Nullop,string("<",1),$3);
	191	if (ops[$3].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	192	\| GETLINE VAR '<' expr
	193	{ $$ = oper3(OGETLINE,$2,string("<",1),$4);
	194	if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	195	\| term 'p' GETLINE
	196	{ $$ = oper3(OGETLINE,Nullop,string("\|",1),$1);
	197	if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	198	\| term 'p' GETLINE VAR
	199	{ $$ = oper3(OGETLINE,$4,string("\|",1),$1);
	200	if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
8d063cd8	201	\| FUN1
	202	{ $$ = oper0($1); need_entire = do_chop = TRUE; }
	203	\| FUN1 '(' ')'
	204	{ $$ = oper1($1,Nullop); need_entire = do_chop = TRUE; }
	205	\| FUN1 '(' expr ')'
	206	{ $$ = oper1($1,$3); }
a687059c	207	\| FUNN '(' expr_list ')'
	208	{ $$ = oper1($1,$3); }
	209	\| USERFUN '(' expr_list ')'
	210	{ $$ = oper2(OUSERFUN,$1,$3); }
	211	\| SPRINTF expr_list
8d063cd8	212	{ $$ = oper1(OSPRINTF,$2); }
	213	\| SUBSTR '(' expr ',' expr ',' expr ')'
	214	{ $$ = oper3(OSUBSTR,$3,$5,$7); }
	215	\| SUBSTR '(' expr ',' expr ')'
	216	{ $$ = oper2(OSUBSTR,$3,$5); }
	217	\| SPLIT '(' expr ',' VAR ',' expr ')'
a687059c	218	{ $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),$7); }
7e1cf235	219	\| SPLIT '(' expr ',' VAR ',' REGEX ')'
7e1cf235	220	{ $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),oper1(OREGEX,$7));}
8d063cd8	221	\| SPLIT '(' expr ',' VAR ')'
a687059c	222	{ $$ = oper2(OSPLIT,$3,aryrefarg(numary($5))); }
8d063cd8	223	\| INDEX '(' expr ',' expr ')'
8d063cd8	224	{ $$ = oper2(OINDEX,$3,$5); }
a687059c	225	\| MATCH '(' expr ',' REGEX ')'
	226	{ $$ = oper2(OMATCH,$3,oper1(OREGEX,$5)); }
	227	\| MATCH '(' expr ',' expr ')'
	228	{ $$ = oper2(OMATCH,$3,$5); }
	229	\| SUB '(' expr ',' expr ')'
	230	{ $$ = oper2(OSUB,$3,$5); }
	231	\| SUB '(' REGEX ',' expr ')'
	232	{ $$ = oper2(OSUB,oper1(OREGEX,$3),$5); }
	233	\| GSUB '(' expr ',' expr ')'
	234	{ $$ = oper2(OGSUB,$3,$5); }
	235	\| GSUB '(' REGEX ',' expr ')'
	236	{ $$ = oper2(OGSUB,oper1(OREGEX,$3),$5); }
	237	\| SUB '(' expr ',' expr ',' expr ')'
	238	{ $$ = oper3(OSUB,$3,$5,$7); }
	239	\| SUB '(' REGEX ',' expr ',' expr ')'
	240	{ $$ = oper3(OSUB,oper1(OREGEX,$3),$5,$7); }
	241	\| GSUB '(' expr ',' expr ',' expr ')'
	242	{ $$ = oper3(OGSUB,$3,$5,$7); }
	243	\| GSUB '(' REGEX ',' expr ',' expr ')'
	244	{ $$ = oper3(OGSUB,oper1(OREGEX,$3),$5,$7); }
8d063cd8	245	;
8d063cd8	246
a687059c	247	variable: VAR
8d063cd8	248	{ $$ = oper1(OVAR,$1); }
a687059c	249	\| VAR '[' expr_list ']'
a687059c	250	{ $$ = oper2(OVAR,aryrefarg($1),$3); }
8d063cd8	251	\| FIELD
	252	{ $$ = oper1(OFLD,$1); }
	253	\| VFIELD term
	254	{ $$ = oper1(OVFLD,$2); }
	255	;
	256
a687059c	257	expr_list
8d063cd8	258	: expr
	259	\| clist
	260	\| /* NULL */
	261	{ $$ = Nullop; }
	262	;
	263
a687059c	264	clist : expr ',' maybe expr
	265	{ $$ = oper3(OCOMMA,$1,$3,$4); }
	266	\| clist ',' maybe expr
	267	{ $$ = oper3(OCOMMA,$1,$3,$4); }
8d063cd8	268	\| '(' clist ')' /* these parens are invisible */
	269	{ $$ = $2; }
	270	;
	271
	272	junk : junk hunksep
	273	{ $$ = oper2(OJUNK,$1,$2); }
	274	\| /* NULL */
	275	{ $$ = Nullop; }
	276	;
	277
	278	hunksep : ';'
a687059c	279	{ $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
8d063cd8	280	\| SEMINEW
a687059c	281	{ $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
8d063cd8	282	\| NEWLINE
	283	{ $$ = oper0(ONEWLINE); }
	284	\| COMMENT
	285	{ $$ = oper1(OCOMMENT,$1); }
	286	;
	287
378cc40b	288	maybe : maybe nlstuff
	289	{ $$ = oper2(OJUNK,$1,$2); }
	290	\| /* NULL */
	291	{ $$ = Nullop; }
	292	;
	293
	294	nlstuff : NEWLINE
	295	{ $$ = oper0(ONEWLINE); }
8d063cd8	296	\| COMMENT
378cc40b	297	{ $$ = oper1(OCOMMENT,$1); }
	298	;
	299
	300	separator
	301	: ';' maybe
	302	{ $$ = oper2(OJUNK,oper0(OSEMICOLON),$2); }
	303	\| SEMINEW maybe
	304	{ $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
	305	\| NEWLINE maybe
	306	{ $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
	307	\| COMMENT maybe
	308	{ $$ = oper2(OJUNK,oper1(OSCOMMENT,$1),$2); }
8d063cd8	309	;
	310
	311	states : states statement
	312	{ $$ = oper2(OSTATES,$1,$2); }
	313	\| /* NULL */
	314	{ $$ = Nullop; }
	315	;
	316
	317	statement
378cc40b	318	: simple separator maybe
	319	{ $$ = oper2(OJUNK,oper2(OSTATE,$1,$2),$3); }
	320	\| ';' maybe
	321	{ $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSEMICOLON),$2)); }
	322	\| SEMINEW maybe
	323	{ $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSNEWLINE),$2)); }
8d063cd8	324	\| compound
	325	;
	326
378cc40b	327	simpnull: simple
	328	\| /* NULL */
	329	{ $$ = Nullop; }
	330	;
	331
8d063cd8	332	simple
8d063cd8	333	: expr
a687059c	334	\| PRINT expr_list redir expr
8d063cd8	335	{ $$ = oper3(OPRINT,$2,$3,$4);
	336	do_opens = TRUE;
	337	saw_ORS = saw_OFS = TRUE;
	338	if (!$2) need_entire = TRUE;
	339	if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
a687059c	340	\| PRINT expr_list
8d063cd8	341	{ $$ = oper1(OPRINT,$2);
	342	if (!$2) need_entire = TRUE;
	343	saw_ORS = saw_OFS = TRUE;
	344	}
a687059c	345	\| PRINTF expr_list redir expr
8d063cd8	346	{ $$ = oper3(OPRINTF,$2,$3,$4);
	347	do_opens = TRUE;
	348	if (!$2) need_entire = TRUE;
	349	if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
a687059c	350	\| PRINTF expr_list
8d063cd8	351	{ $$ = oper1(OPRINTF,$2);
	352	if (!$2) need_entire = TRUE;
	353	}
	354	\| BREAK
	355	{ $$ = oper0(OBREAK); }
	356	\| NEXT
	357	{ $$ = oper0(ONEXT); }
	358	\| EXIT
	359	{ $$ = oper0(OEXIT); }
	360	\| EXIT expr
	361	{ $$ = oper1(OEXIT,$2); }
	362	\| CONTINUE
	363	{ $$ = oper0(OCONTINUE); }
a687059c	364	\| RET
	365	{ $$ = oper0(ORETURN); }
	366	\| RET expr
	367	{ $$ = oper1(ORETURN,$2); }
	368	\| DELETE VAR '[' expr ']'
	369	{ $$ = oper2(ODELETE,aryrefarg($2),$4); }
8d063cd8	370	;
8d063cd8	371
a687059c	372	redir : '>' %prec FIELD
7e1cf235	373	{ $$ = oper1(OREDIR,string(">",1)); }
8d063cd8	374	\| GRGR
	375	{ $$ = oper1(OREDIR,string(">>",2)); }
	376	\| '\|'
	377	{ $$ = oper1(OREDIR,string("\|",1)); }
	378	;
	379
	380	compound
	381	: IF '(' cond ')' maybe statement
	382	{ $$ = oper2(OIF,$3,bl($6,$5)); }
	383	\| IF '(' cond ')' maybe statement ELSE maybe statement
	384	{ $$ = oper3(OIF,$3,bl($6,$5),bl($9,$8)); }
	385	\| WHILE '(' cond ')' maybe statement
	386	{ $$ = oper2(OWHILE,$3,bl($6,$5)); }
a687059c	387	\| DO maybe statement WHILE '(' cond ')'
a687059c	388	{ $$ = oper2(ODO,bl($3,$2),$6); }
378cc40b	389	\| FOR '(' simpnull ';' cond ';' simpnull ')' maybe statement
8d063cd8	390	{ $$ = oper4(OFOR,$3,$5,$7,bl($10,$9)); }
378cc40b	391	\| FOR '(' simpnull ';' ';' simpnull ')' maybe statement
8d063cd8	392	{ $$ = oper4(OFOR,$3,string("",0),$6,bl($9,$8)); }
a687059c	393	\| FOR '(' expr ')' maybe statement
a687059c	394	{ $$ = oper2(OFORIN,$3,bl($6,$5)); }
378cc40b	395	\| '{' maybe states '}' maybe
378cc40b	396	{ $$ = oper3(OBLOCK,oper2(OJUNK,$2,$3),Nullop,$5); }
8d063cd8	397	;
	398
	399	%%
	400	#include "a2py.c"