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

%{
/* $RCSfile: a2p.y,v $$Revision: 4.0.1.2 $$Date: 92/06/08 16:13:03 $
 *
 *    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 4.0.1.2  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
	;

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