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|
%{
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
%}
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
%{#
# ident "%Z%%M% %I% %E% SMI" /* "@(#)ucbeqn:e.y 1.1" */
#include "e.h"
#include <locale.h>
#
int fromflg;
%}
%term CONTIG QTEXT SPACE THIN TAB
%term MATRIX LCOL CCOL RCOL COL
%term MARK LINEUP
%term SUM INT PROD UNION INTER
%term LPILE PILE CPILE RPILE ABOVE
%term DEFINE TDEFINE NDEFINE DELIM GSIZE GFONT INCLUDE
%right FROM TO
%left OVER SQRT
%right SUP SUB
%right SIZE FONT ROMAN ITALIC BOLD FAT
%right UP DOWN BACK FWD
%left LEFT RIGHT
%right DOT DOTDOT HAT TILDE BAR UNDER VEC DYAD
%%
stuff : eqn { putout($1); }
| error { error(!FATAL, gettext("syntax error")); }
| { eqnreg = 0; }
;
eqn : box
| eqn box { eqnbox($1, $2, 0); }
| eqn lineupbox { eqnbox($1, $2, 1); }
| LINEUP { lineup(0); }
;
lineupbox: LINEUP box { $$ = $2; lineup(1); }
;
matrix : MATRIX { $$ = ct; } ;
collist : column
| collist column
;
column : lcol '{' list '}' { column('L', $1); }
| ccol '{' list '}' { column('C', $1); }
| rcol '{' list '}' { column('R', $1); }
| col '{' list '}' { column('-', $1); }
;
lcol : LCOL { $$ = ct++; } ;
ccol : CCOL { $$ = ct++; } ;
rcol : RCOL { $$ = ct++; } ;
col : COL { $$ = ct++; } ;
sbox : sup box %prec SUP { $$ = $2; }
;
tbox : to box %prec TO { $$ = $2; }
| %prec FROM { $$ = 0; }
;
box : box OVER box { boverb($1, $3); }
| MARK box { mark($2); }
| size box %prec SIZE { size($1, $2); }
| font box %prec FONT { font($1, $2); }
| FAT box { fatbox($2); }
| SQRT box { sqrt($2); }
| lpile '{' list '}' { lpile('L', $1, ct); ct = $1; }
| cpile '{' list '}' { lpile('C', $1, ct); ct = $1; }
| rpile '{' list '}' { lpile('R', $1, ct); ct = $1; }
| pile '{' list '}' { lpile('-', $1, ct); ct = $1; }
| box sub box sbox %prec SUB { shift2($1, $3, $4); }
| box sub box %prec SUB { bshiftb($1, $2, $3); }
| box sup box %prec SUP { bshiftb($1, $2, $3); }
| int sub box sbox %prec SUB { integral($1, $3, $4); }
| int sub box %prec SUB { integral($1, $3, 0); }
| int sup box %prec SUP { integral($1, 0, $3); }
| int { integral($1, 0, 0); }
| left eqn right { paren($1, $2, $3); }
| pbox
| box from box tbox %prec FROM { fromto($1, $3, $4); fromflg=0; }
| box to box %prec TO { fromto($1, 0, $3); }
| box diacrit { diacrit($1, $2); }
| fwd box %prec UP { move(FWD, $1, $2); }
| up box %prec UP { move(UP, $1, $2); }
| back box %prec UP { move(BACK, $1, $2); }
| down box %prec UP { move(DOWN, $1, $2); }
| matrix '{' collist '}' { matrix($1); }
;
int : INT { setintegral(); }
;
fwd : FWD text { $$ = atoi((char *) $1); } ;
up : UP text { $$ = atoi((char *) $1); } ;
back : BACK text { $$ = atoi((char *) $1); } ;
down : DOWN text { $$ = atoi((char *) $1); } ;
diacrit : HAT { $$ = HAT; }
| VEC { $$ = VEC; }
| DYAD { $$ = DYAD; }
| BAR { $$ = BAR; }
| UNDER { $$ = UNDER; } /* under bar */
| DOT { $$ = DOT; }
| TILDE { $$ = TILDE; }
| DOTDOT { $$ = DOTDOT; } /* umlaut = double dot */
;
from : FROM { $$=ps; ps -= 3; fromflg = 1;
if(dbg)printf(".\tfrom: old ps %d, new ps %d, fflg %d\n", $$, ps, fromflg);
}
;
to : TO { $$=ps; if(fromflg==0)ps -= 3;
if(dbg)printf(".\tto: old ps %d, new ps %d\n", $$, ps);
}
;
left : LEFT text { $$ = ((char *)$2)[0]; }
| LEFT '{' { $$ = '{'; }
;
right : RIGHT text { $$ = ((char *)$2)[0]; }
| RIGHT '}' { $$ = '}'; }
| { $$ = 0; }
;
list : eqn { lp[ct++] = $1; }
| list ABOVE eqn { lp[ct++] = $3; }
;
lpile : LPILE { $$ = ct; } ;
cpile : CPILE { $$ = ct; } ;
pile : PILE { $$ = ct; } ;
rpile : RPILE { $$ = ct; } ;
size : SIZE text { $$ = ps; setsize((char *) $2); }
;
font : ROMAN { setfont(ROM); }
| ITALIC { setfont(ITAL); }
| BOLD { setfont(BLD); }
| FONT text { setfont(((char *)$2)[0]); }
;
sub : SUB { shift(SUB); }
;
sup : SUP { shift(SUP); }
;
pbox : '{' eqn '}' { $$ = $2; }
| QTEXT { text(QTEXT, (char *) $1); }
| CONTIG { text(CONTIG, (char *) $1); }
| SPACE { text(SPACE, 0); }
| THIN { text(THIN, 0); }
| TAB { text(TAB, 0); }
| SUM { funny(SUM); }
| PROD { funny(PROD); }
| UNION { funny(UNION); }
| INTER { funny(INTER); } /* intersection */
;
text : CONTIG
| QTEXT
;
%%
|
