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

%{
/* $RCSfile: a2p.y,v $$Revision: 4.1 $$Date: 92/08/07 18:29:12 $
 *
 *    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 4.1  92/08/07  18:29:12  lwall
 * 
 * Revision 4.0.1.2  92/06/08  16:13:03  lwall
 * patch20: in a2p, getline should allow variable to be array element
 * 
 * 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
	| cond '?' expr ':' expr
		{ $$ = oper3(OCOND,$1,$3,$5); }
	;

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); }
	| cond '?' expr ':' expr
		{ $$ = oper3(OCOND,$1,$3,$5); }
	| variable INCR
		{ $$ = 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
		{ $$ = oper0(OGETLINE); }
	| GETLINE variable
		{ $$ = oper1(OGETLINE,$2); }
	| GETLINE '<' expr
		{ $$ = oper3(OGETLINE,Nullop,string("<",1),$3);
		    if (ops[$3].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| GETLINE variable '<' expr
		{ $$ = oper3(OGETLINE,$2,string("<",1),$4);
		    if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| term 'p' GETLINE
		{ $$ = oper3(OGETLINE,Nullop,string("|",1),$1);
		    if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	| term 'p' GETLINE variable
		{ $$ = 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
		{ $$ = oper1(ORETURN,$2); }
	| DELETE VAR '[' expr_list ']'
		{ $$ = 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	%{
79072805	2	/* $RCSfile: a2p.y,v $$Revision: 4.1 $$Date: 92/08/07 18:29:12 $
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 $
79072805	10	* Revision 4.1 92/08/07 18:29:12 lwall
79072805	11	*
bf10efe7	12	* Revision 4.0.1.2 92/06/08 16:13:03 lwall
	13	* patch20: in a2p, getline should allow variable to be array element
	14	*
2b317908	15	* Revision 4.0.1.1 91/06/07 12:12:41 lwall
	16	* patch4: new copyright notice
	17	*
fe14fcc3	18	* Revision 4.0 91/03/20 01:57:21 lwall
fe14fcc3	19	* 4.0 baseline.
8d063cd8	20	*
	21	*/
	22
	23	#include "INTERN.h"
	24	#include "a2p.h"
	25
	26	int root;
a687059c	27	int begins = Nullop;
a687059c	28	int ends = Nullop;
8d063cd8	29
	30	%}
	31	%token BEGIN END
	32	%token REGEX
	33	%token SEMINEW NEWLINE COMMENT
a687059c	34	%token FUN1 FUNN GRGR
8d063cd8	35	%token PRINT PRINTF SPRINTF SPLIT
8d063cd8	36	%token IF ELSE WHILE FOR IN
a687059c	37	%token EXIT NEXT BREAK CONTINUE RET
	38	%token GETLINE DO SUB GSUB MATCH
	39	%token FUNCTION USERFUN DELETE
8d063cd8	40
8d063cd8	41	%right ASGNOP
a687059c	42	%right '?' ':'
8d063cd8	43	%left OROR
8d063cd8	44	%left ANDAND
a687059c	45	%left IN
8d063cd8	46	%left NUMBER VAR SUBSTR INDEX
a687059c	47	%left MATCHOP
a687059c	48	%left RELOP '<' '>'
8d063cd8	49	%left OR
	50	%left STRING
	51	%left '+' '-'
	52	%left '*' '/' '%'
	53	%right UMINUS
a687059c	54	%left NOT
a687059c	55	%right '^'
8d063cd8	56	%left INCR DECR
	57	%left FIELD VFIELD
	58
	59	%%
	60
a687059c	61	program : junk hunks
a687059c	62	{ root = oper4(OPROG,$1,begins,$2,ends); }
8d063cd8	63	;
8d063cd8	64
378cc40b	65	begin : BEGIN '{' maybe states '}' junk
a687059c	66	{ begins = oper4(OJUNK,begins,$3,$4,$6); in_begin = FALSE;
a687059c	67	$$ = Nullop; }
8d063cd8	68	;
8d063cd8	69
378cc40b	70	end : END '{' maybe states '}'
a687059c	71	{ ends = oper3(OJUNK,ends,$3,$4); $$ = Nullop; }
8d063cd8	72	\| end NEWLINE
8d063cd8	73	{ $$ = $1; }
8d063cd8	74	;
	75
	76	hunks : hunks hunk junk
	77	{ $$ = oper3(OHUNKS,$1,$2,$3); }
	78	\| /* NULL */
	79	{ $$ = Nullop; }
	80	;
	81
	82	hunk : patpat
	83	{ $$ = oper1(OHUNK,$1); need_entire = TRUE; }
378cc40b	84	\| patpat '{' maybe states '}'
378cc40b	85	{ $$ = oper2(OHUNK,$1,oper2(OJUNK,$3,$4)); }
a687059c	86	\| FUNCTION USERFUN '(' arg_list ')' maybe '{' maybe states '}'
a687059c	87	{ fixfargs($2,$4,0); $$ = oper5(OUSERDEF,$2,$4,$6,$8,$9); }
378cc40b	88	\| '{' maybe states '}'
378cc40b	89	{ $$ = oper2(OHUNK,Nullop,oper2(OJUNK,$2,$3)); }
a687059c	90	\| begin
	91	\| end
	92	;
	93
	94	arg_list: expr_list
	95	{ $$ = rememberargs($$); }
8d063cd8	96	;
8d063cd8	97
449aadca	98	patpat : cond
8d063cd8	99	{ $$ = oper1(OPAT,$1); }
449aadca	100	\| cond ',' cond
8d063cd8	101	{ $$ = oper2(ORANGE,$1,$3); }
	102	;
	103
8d063cd8	104	cond : expr
	105	\| match
	106	\| rel
	107	\| compound_cond
2304df62	108	\| cond '?' expr ':' expr
2304df62	109	{ $$ = oper3(OCOND,$1,$3,$5); }
8d063cd8	110	;
	111
	112	compound_cond
	113	: '(' compound_cond ')'
	114	{ $$ = oper1(OCPAREN,$2); }
a687059c	115	\| cond ANDAND maybe cond
	116	{ $$ = oper3(OCANDAND,$1,$3,$4); }
	117	\| cond OROR maybe cond
	118	{ $$ = oper3(OCOROR,$1,$3,$4); }
8d063cd8	119	\| NOT cond
	120	{ $$ = oper1(OCNOT,$2); }
	121	;
	122
	123	rel : expr RELOP expr
	124	{ $$ = oper3(ORELOP,$2,$1,$3); }
a687059c	125	\| expr '>' expr
	126	{ $$ = oper3(ORELOP,string(">",1),$1,$3); }
	127	\| expr '<' expr
	128	{ $$ = oper3(ORELOP,string("<",1),$1,$3); }
8d063cd8	129	\| '(' rel ')'
	130	{ $$ = oper1(ORPAREN,$2); }
	131	;
	132
a687059c	133	match : expr MATCHOP expr
	134	{ $$ = oper3(OMATCHOP,$2,$1,$3); }
	135	\| expr MATCHOP REGEX
378cc40b	136	{ $$ = oper3(OMATCHOP,$2,$1,oper1(OREGEX,$3)); }
a687059c	137	\| REGEX %prec MATCHOP
a687059c	138	{ $$ = oper1(OREGEX,$1); }
8d063cd8	139	\| '(' match ')'
	140	{ $$ = oper1(OMPAREN,$2); }
	141	;
	142
	143	expr : term
	144	{ $$ = $1; }
	145	\| expr term
	146	{ $$ = oper2(OCONCAT,$1,$2); }
87250799	147	\| variable ASGNOP cond
8d063cd8	148	{ $$ = oper3(OASSIGN,$2,$1,$3);
	149	if ((ops[$1].ival & 255) == OFLD)
	150	lval_field = TRUE;
	151	if ((ops[$1].ival & 255) == OVFLD)
	152	lval_field = TRUE;
	153	}
	154	;
	155
	156	term : variable
	157	{ $$ = $1; }
a687059c	158	\| NUMBER
	159	{ $$ = oper1(ONUM,$1); }
	160	\| STRING
	161	{ $$ = oper1(OSTR,$1); }
8d063cd8	162	\| term '+' term
	163	{ $$ = oper2(OADD,$1,$3); }
	164	\| term '-' term
a687059c	165	{ $$ = oper2(OSUBTRACT,$1,$3); }
8d063cd8	166	\| term '*' term
	167	{ $$ = oper2(OMULT,$1,$3); }
	168	\| term '/' term
	169	{ $$ = oper2(ODIV,$1,$3); }
	170	\| term '%' term
	171	{ $$ = oper2(OMOD,$1,$3); }
a687059c	172	\| term '^' term
	173	{ $$ = oper2(OPOW,$1,$3); }
	174	\| term IN VAR
	175	{ $$ = oper2(ODEFINED,aryrefarg($3),$1); }
463ee0b2	176	\| cond '?' expr ':' expr
87250799	177	{ $$ = oper3(OCOND,$1,$3,$5); }
8d063cd8	178	\| variable INCR
	179	{ $$ = oper1(OPOSTINCR,$1); }
	180	\| variable DECR
	181	{ $$ = oper1(OPOSTDECR,$1); }
	182	\| INCR variable
	183	{ $$ = oper1(OPREINCR,$2); }
	184	\| DECR variable
	185	{ $$ = oper1(OPREDECR,$2); }
	186	\| '-' term %prec UMINUS
	187	{ $$ = oper1(OUMINUS,$2); }
	188	\| '+' term %prec UMINUS
	189	{ $$ = oper1(OUPLUS,$2); }
449aadca	190	\| '(' cond ')'
8d063cd8	191	{ $$ = oper1(OPAREN,$2); }
	192	\| GETLINE
	193	{ $$ = oper0(OGETLINE); }
bf10efe7	194	\| GETLINE variable
a687059c	195	{ $$ = oper1(OGETLINE,$2); }
	196	\| GETLINE '<' expr
	197	{ $$ = oper3(OGETLINE,Nullop,string("<",1),$3);
	198	if (ops[$3].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
bf10efe7	199	\| GETLINE variable '<' expr
a687059c	200	{ $$ = oper3(OGETLINE,$2,string("<",1),$4);
	201	if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
	202	\| term 'p' GETLINE
	203	{ $$ = oper3(OGETLINE,Nullop,string("\|",1),$1);
	204	if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
bf10efe7	205	\| term 'p' GETLINE variable
a687059c	206	{ $$ = oper3(OGETLINE,$4,string("\|",1),$1);
a687059c	207	if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
8d063cd8	208	\| FUN1
	209	{ $$ = oper0($1); need_entire = do_chop = TRUE; }
	210	\| FUN1 '(' ')'
	211	{ $$ = oper1($1,Nullop); need_entire = do_chop = TRUE; }
	212	\| FUN1 '(' expr ')'
	213	{ $$ = oper1($1,$3); }
a687059c	214	\| FUNN '(' expr_list ')'
	215	{ $$ = oper1($1,$3); }
	216	\| USERFUN '(' expr_list ')'
	217	{ $$ = oper2(OUSERFUN,$1,$3); }
	218	\| SPRINTF expr_list
8d063cd8	219	{ $$ = oper1(OSPRINTF,$2); }
	220	\| SUBSTR '(' expr ',' expr ',' expr ')'
	221	{ $$ = oper3(OSUBSTR,$3,$5,$7); }
	222	\| SUBSTR '(' expr ',' expr ')'
	223	{ $$ = oper2(OSUBSTR,$3,$5); }
	224	\| SPLIT '(' expr ',' VAR ',' expr ')'
a687059c	225	{ $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),$7); }
7e1cf235	226	\| SPLIT '(' expr ',' VAR ',' REGEX ')'
7e1cf235	227	{ $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),oper1(OREGEX,$7));}
8d063cd8	228	\| SPLIT '(' expr ',' VAR ')'
a687059c	229	{ $$ = oper2(OSPLIT,$3,aryrefarg(numary($5))); }
8d063cd8	230	\| INDEX '(' expr ',' expr ')'
8d063cd8	231	{ $$ = oper2(OINDEX,$3,$5); }
a687059c	232	\| MATCH '(' expr ',' REGEX ')'
	233	{ $$ = oper2(OMATCH,$3,oper1(OREGEX,$5)); }
	234	\| MATCH '(' expr ',' expr ')'
	235	{ $$ = oper2(OMATCH,$3,$5); }
	236	\| SUB '(' expr ',' expr ')'
	237	{ $$ = oper2(OSUB,$3,$5); }
	238	\| SUB '(' REGEX ',' expr ')'
	239	{ $$ = oper2(OSUB,oper1(OREGEX,$3),$5); }
	240	\| GSUB '(' expr ',' expr ')'
	241	{ $$ = oper2(OGSUB,$3,$5); }
	242	\| GSUB '(' REGEX ',' expr ')'
	243	{ $$ = oper2(OGSUB,oper1(OREGEX,$3),$5); }
	244	\| SUB '(' expr ',' expr ',' expr ')'
	245	{ $$ = oper3(OSUB,$3,$5,$7); }
	246	\| SUB '(' REGEX ',' expr ',' expr ')'
	247	{ $$ = oper3(OSUB,oper1(OREGEX,$3),$5,$7); }
	248	\| GSUB '(' expr ',' expr ',' expr ')'
	249	{ $$ = oper3(OGSUB,$3,$5,$7); }
	250	\| GSUB '(' REGEX ',' expr ',' expr ')'
	251	{ $$ = oper3(OGSUB,oper1(OREGEX,$3),$5,$7); }
8d063cd8	252	;
8d063cd8	253
a687059c	254	variable: VAR
8d063cd8	255	{ $$ = oper1(OVAR,$1); }
a687059c	256	\| VAR '[' expr_list ']'
a687059c	257	{ $$ = oper2(OVAR,aryrefarg($1),$3); }
8d063cd8	258	\| FIELD
	259	{ $$ = oper1(OFLD,$1); }
	260	\| VFIELD term
	261	{ $$ = oper1(OVFLD,$2); }
	262	;
	263
a687059c	264	expr_list
8d063cd8	265	: expr
	266	\| clist
	267	\| /* NULL */
	268	{ $$ = Nullop; }
	269	;
	270
a687059c	271	clist : expr ',' maybe expr
	272	{ $$ = oper3(OCOMMA,$1,$3,$4); }
	273	\| clist ',' maybe expr
	274	{ $$ = oper3(OCOMMA,$1,$3,$4); }
8d063cd8	275	\| '(' clist ')' /* these parens are invisible */
	276	{ $$ = $2; }
	277	;
	278
	279	junk : junk hunksep
	280	{ $$ = oper2(OJUNK,$1,$2); }
	281	\| /* NULL */
	282	{ $$ = Nullop; }
	283	;
	284
	285	hunksep : ';'
a687059c	286	{ $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
8d063cd8	287	\| SEMINEW
a687059c	288	{ $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
8d063cd8	289	\| NEWLINE
	290	{ $$ = oper0(ONEWLINE); }
	291	\| COMMENT
	292	{ $$ = oper1(OCOMMENT,$1); }
	293	;
	294
378cc40b	295	maybe : maybe nlstuff
	296	{ $$ = oper2(OJUNK,$1,$2); }
	297	\| /* NULL */
	298	{ $$ = Nullop; }
	299	;
	300
	301	nlstuff : NEWLINE
	302	{ $$ = oper0(ONEWLINE); }
8d063cd8	303	\| COMMENT
378cc40b	304	{ $$ = oper1(OCOMMENT,$1); }
	305	;
	306
	307	separator
	308	: ';' maybe
	309	{ $$ = oper2(OJUNK,oper0(OSEMICOLON),$2); }
	310	\| SEMINEW maybe
	311	{ $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
	312	\| NEWLINE maybe
	313	{ $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
	314	\| COMMENT maybe
	315	{ $$ = oper2(OJUNK,oper1(OSCOMMENT,$1),$2); }
8d063cd8	316	;
	317
	318	states : states statement
	319	{ $$ = oper2(OSTATES,$1,$2); }
	320	\| /* NULL */
	321	{ $$ = Nullop; }
	322	;
	323
	324	statement
378cc40b	325	: simple separator maybe
	326	{ $$ = oper2(OJUNK,oper2(OSTATE,$1,$2),$3); }
	327	\| ';' maybe
	328	{ $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSEMICOLON),$2)); }
	329	\| SEMINEW maybe
	330	{ $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSNEWLINE),$2)); }
8d063cd8	331	\| compound
	332	;
	333
378cc40b	334	simpnull: simple
	335	\| /* NULL */
	336	{ $$ = Nullop; }
	337	;
	338
8d063cd8	339	simple
8d063cd8	340	: expr
a687059c	341	\| PRINT expr_list redir expr
8d063cd8	342	{ $$ = oper3(OPRINT,$2,$3,$4);
	343	do_opens = TRUE;
	344	saw_ORS = saw_OFS = TRUE;
	345	if (!$2) need_entire = TRUE;
	346	if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
a687059c	347	\| PRINT expr_list
8d063cd8	348	{ $$ = oper1(OPRINT,$2);
	349	if (!$2) need_entire = TRUE;
	350	saw_ORS = saw_OFS = TRUE;
	351	}
a687059c	352	\| PRINTF expr_list redir expr
8d063cd8	353	{ $$ = oper3(OPRINTF,$2,$3,$4);
	354	do_opens = TRUE;
	355	if (!$2) need_entire = TRUE;
	356	if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
a687059c	357	\| PRINTF expr_list
8d063cd8	358	{ $$ = oper1(OPRINTF,$2);
	359	if (!$2) need_entire = TRUE;
	360	}
	361	\| BREAK
	362	{ $$ = oper0(OBREAK); }
	363	\| NEXT
	364	{ $$ = oper0(ONEXT); }
	365	\| EXIT
	366	{ $$ = oper0(OEXIT); }
	367	\| EXIT expr
	368	{ $$ = oper1(OEXIT,$2); }
	369	\| CONTINUE
	370	{ $$ = oper0(OCONTINUE); }
a687059c	371	\| RET
	372	{ $$ = oper0(ORETURN); }
	373	\| RET expr
	374	{ $$ = oper1(ORETURN,$2); }
2304df62	375	\| DELETE VAR '[' expr_list ']'
a687059c	376	{ $$ = oper2(ODELETE,aryrefarg($2),$4); }
8d063cd8	377	;
8d063cd8	378
a687059c	379	redir : '>' %prec FIELD
7e1cf235	380	{ $$ = oper1(OREDIR,string(">",1)); }
8d063cd8	381	\| GRGR
	382	{ $$ = oper1(OREDIR,string(">>",2)); }
	383	\| '\|'
	384	{ $$ = oper1(OREDIR,string("\|",1)); }
	385	;
	386
	387	compound
	388	: IF '(' cond ')' maybe statement
	389	{ $$ = oper2(OIF,$3,bl($6,$5)); }
	390	\| IF '(' cond ')' maybe statement ELSE maybe statement
	391	{ $$ = oper3(OIF,$3,bl($6,$5),bl($9,$8)); }
	392	\| WHILE '(' cond ')' maybe statement
	393	{ $$ = oper2(OWHILE,$3,bl($6,$5)); }
a687059c	394	\| DO maybe statement WHILE '(' cond ')'
a687059c	395	{ $$ = oper2(ODO,bl($3,$2),$6); }
378cc40b	396	\| FOR '(' simpnull ';' cond ';' simpnull ')' maybe statement
8d063cd8	397	{ $$ = oper4(OFOR,$3,$5,$7,bl($10,$9)); }
378cc40b	398	\| FOR '(' simpnull ';' ';' simpnull ')' maybe statement
8d063cd8	399	{ $$ = oper4(OFOR,$3,string("",0),$6,bl($9,$8)); }
a687059c	400	\| FOR '(' expr ')' maybe statement
a687059c	401	{ $$ = oper2(OFORIN,$3,bl($6,$5)); }
378cc40b	402	\| '{' maybe states '}' maybe
378cc40b	403	{ $$ = oper3(OBLOCK,oper2(OJUNK,$2,$3),Nullop,$5); }
8d063cd8	404	;
	405
	406	%%
	407	#include "a2py.c"