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parse.y
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%{
/* Copyright (C) 1990, 1992, 1993 Free Software Foundation, Inc.
This file is part of Oleo, the GNU Spreadsheet.
Oleo is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Oleo is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Oleo; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
%}
%right '?' ':'
/* %left '|' */
%left '&'
%nonassoc '=' NE
%nonassoc '<' LE '>' GE
%left '+' '-'
%left '*' '/' '%'
%right '^'
%left NEG '!'
%token L_CELL L_RANGE
%token L_VAR
%token L_CONST
%token L_FN0 L_FN1 L_FN2 L_FN3 L_FN4 L_FNN
%token L_FN1R L_FN2R L_FN3R L_FN4R L_FNNR
%token L_LE L_NE L_GE
%{
#include "funcdef.h"
#include <ctype.h>
#define obstack_chunk_alloc ck_malloc
#define obstack_chunk_free free
#include "obstack.h"
#include "sysdef.h"
#include "global.h"
#include "errors.h"
#include "node.h"
#include "eval.h"
#include "ref.h"
int yylex ();
#ifdef __STDC__
void yyerror (char *);
#else
void yyerror ();
#endif
VOIDSTAR parse_hash;
extern VOIDSTAR hash_find();
/* This table contains a list of the infix single-char functions */
unsigned char fnin[] = {
SUM, DIFF, DIV, PROD, MOD, /* AND, OR, */ POW, EQUAL, IF, CONCAT, 0
};
#define YYSTYPE _y_y_s_t_y_p_e
typedef struct node *YYSTYPE;
YYSTYPE parse_return;
#ifdef __STDC__
YYSTYPE make_list (YYSTYPE, YYSTYPE);
#else
YYSTYPE make_list ();
#endif
char *instr;
int parse_error = 0;
extern struct obstack tmp_mem;
%}
%%
line: exp
{ parse_return=$1; }
| error {
if(!parse_error)
parse_error=PARSE_ERR;
parse_return=0; }
;
exp: L_CONST
| cell
| L_FN0 '(' ')' {
$$=$1; }
| L_FN1 '(' exp ')' {
($1)->n_x.v_subs[0]=$3;
($1)->n_x.v_subs[1]=(struct node *)0;
$$=$1; }
| L_FN2 '(' exp ',' exp ')' {
($1)->n_x.v_subs[0]=$3;
($1)->n_x.v_subs[1]=$5;
$$=$1; }
| L_FN3 '(' exp ',' exp ',' exp ')' {
($1)->n_x.v_subs[0]=make_list($3,$5);
($1)->n_x.v_subs[1]=$7;
$$=$1;}
| L_FN4 '(' exp ',' exp ',' exp ',' exp ')' {
($1)->n_x.v_subs[0]=make_list($3,$5);
($1)->n_x.v_subs[1]=make_list($7,$9);
$$=$1;}
| L_FNN '(' exp_list ')' {
($1)->n_x.v_subs[0]=(struct node *)0;
($1)->n_x.v_subs[1]=$3;
$$=$1; }
| L_FN1R '(' L_RANGE ')' {
$1->n_x.v_subs[0]=$3;
$$=$1; }
| L_FN1R '(' L_VAR ')' {
$1->n_x.v_subs[0]=$3;
$$=$1; }
| L_FN2R '(' L_RANGE ',' exp ')' {
$1->n_x.v_subs[0]=$3;
$1->n_x.v_subs[1]=$5;
$$=$1; }
| L_FN2R '(' L_VAR ',' exp ')' {
$1->n_x.v_subs[0]=$3;
$1->n_x.v_subs[1]=$5;
$$=$1; }
/* JF: These should be FN2R, but I'm hacking this for SYLNK */
| L_FN2R '(' L_RANGE ',' exp ',' exp ')' {
if($1->comp_value!=F_INDEX)
parse_error=PARSE_ERR;
$1->comp_value=F_INDEX2;
$1->n_x.v_subs[0]=make_list($3,$5);
$1->n_x.v_subs[1]=$7;
$$=$1; }
| L_FN2R '(' L_VAR ',' exp ',' exp ')' {
if($1->comp_value!=F_INDEX)
parse_error=PARSE_ERR;
$1->comp_value=F_INDEX2;
$1->n_x.v_subs[0]=make_list($3,$5);
$1->n_x.v_subs[1]=$7;
$$=$1; }
| L_FN3R '(' L_RANGE ',' exp ',' exp ')' {
($1)->n_x.v_subs[0]=make_list($3,$5);
($1)->n_x.v_subs[1]=$7;
$$=$1;}
| L_FN3R '(' L_VAR ',' exp ',' exp ')' {
($1)->n_x.v_subs[0]=make_list($3,$5);
($1)->n_x.v_subs[1]=$7;
$$=$1;}
| L_FNNR '(' range_exp_list ')' {
($1)->n_x.v_subs[0]=(struct node *)0;
($1)->n_x.v_subs[1]=$3;
$$=$1; }
| exp '?' exp ':' exp {
$2->comp_value=IF;
$2->n_x.v_subs[0]=$4;
$2->n_x.v_subs[1]=$5;
$4->n_x.v_subs[0]=$1;
$4->n_x.v_subs[1]=$3;
$$=$2; }
/* | exp '|' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; } */
| exp '&' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '<' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp LE exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '=' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp NE exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '>' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp GE exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '+' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '-' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '*' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '/' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '%' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| exp '^' exp {
$2->n_x.v_subs[0]=$1;
$2->n_x.v_subs[1]=$3;
$$ = $2; }
| '-' exp %prec NEG {
if($2->comp_value==CONST_FLT) {
$2->n_x.v_float= -($2->n_x.v_float);
/* free($1); */
$$=$2;
} else if($2->comp_value==CONST_INT) {
$2->n_x.v_int= -($2->n_x.v_int);
/* free($1); */
$$=$2;
} else {
$1->comp_value = NEGATE;
$1->n_x.v_subs[0]=$2;
$1->n_x.v_subs[1]=(struct node *)0;
$$ = $1;
} }
| '!' exp {
$1->n_x.v_subs[0]=$2;
$1->n_x.v_subs[1]=(struct node *)0;
$$ = $1; }
| '(' exp ')'
{ $$ = $2; }
| '(' exp error {
if(!parse_error)
parse_error=NO_CLOSE;
}
/* | exp ')' error {
if(!parse_error)
parse_error=NO_OPEN;
} */
| '(' error {
if(!parse_error)
parse_error=NO_CLOSE;
}
;
exp_list: exp
{ $$ = make_list($1, 0); }
| exp_list ',' exp
{ $$ = make_list($3, $1); }
;
range_exp: L_RANGE
| exp
;
range_exp_list: range_exp
{ $$=make_list($1, 0); }
| range_exp_list ',' range_exp
{ $$=make_list($3,$1); }
;
cell: L_CELL
{ $$=$1; }
| L_VAR
;
%%
void
yyerror FUN1(char *, s)
{
if(!parse_error)
parse_error=PARSE_ERR;
}
YYSTYPE
make_list FUN2(YYSTYPE, car, YYSTYPE, cdr)
{
YYSTYPE ret;
ret=(YYSTYPE)obstack_alloc(&tmp_mem,sizeof(*ret));
ret->comp_value = 0;
ret->n_x.v_subs[0]=car;
ret->n_x.v_subs[1]=cdr;
return ret;
}
#define ERROR -1
extern struct node *yylval;
#ifdef __STDC__
unsigned char parse_cell_or_range (char **,struct rng *);
int str_to_col (char ** str);
#else
unsigned char parse_cell_or_range ();
#endif
int
yylex FUN0()
{
int ch;
struct node *new;
int isflt;
char *begin;
char *tmp_str;
unsigned char byte_value;
int n;
/* unsigned char *ptr; */
int nn;
struct function *fp;
int tmp_ch;
#ifdef TEST
if(!instr)
return ERROR;
#endif
while(isspace(*instr))
instr++;
ch = *instr++;
if(ch=='(' || ch==',' || ch==')')
return ch;
new=(struct node *)obstack_alloc(&tmp_mem,sizeof(struct node));
new->add_byte=0;
new->sub_value=0;
switch(ch) {
case 0:
return 0;
case '0': case '1': case '2': case '3': case '4': case '5': case '6':
case '7': case '8': case '9': case '.':
isflt = (ch=='.');
begin=instr-1;
tmp_str=instr;
while(isdigit(*tmp_str) || (!isflt && *tmp_str=='.' && ++isflt))
tmp_str++;
if(*tmp_str=='e' || *tmp_str=='E') {
isflt=1;
tmp_str++;
if(*tmp_str=='-' || *tmp_str=='+')
tmp_str++;
while(isdigit(*tmp_str))
tmp_str++;
}
if(isflt) {
new->n_x.v_float=astof((char **)(&begin));
byte_value=CONST_FLT;
} else {
new->n_x.v_int=astol((char **)(&begin));
if(begin!=tmp_str) {
begin=instr-1;
new->n_x.v_float=astof((char **)(&begin));
byte_value=CONST_FLT;
} else
byte_value=CONST_INT;
}
ch=L_CONST;
instr=begin;
break;
case '"':
begin=instr;
while(*instr && *instr!='"') {
if(*instr=='\\' && instr[1])
instr++;
instr++;
}
if(!*instr) {
parse_error=NO_QUOTE;
return ERROR;
}
tmp_str=new->n_x.v_string=(char *)ck_malloc(1+instr-begin);
while(begin!=instr) {
unsigned char n;
if(*begin=='\\') {
begin++;
if(begin[0]>='0' && begin[0]<='7') {
if(begin[1]>='0' && begin[1]<='7') {
if(begin[2]>='0' && begin[2]<='7') {
n=(begin[2]-'0') + (010 * (begin[1]-'0')) + ( 0100 * (begin[0]-'0'));
begin+=3;
} else {
n=(begin[1]-'0') + (010 * (begin[0]-'0'));
begin+=2;
}
} else {
n=begin[0]-'0';
begin++;
}
} else
n= *begin++;
*tmp_str++= n;
} else
*tmp_str++= *begin++;
}
*tmp_str='\0';
instr++;
byte_value=CONST_STR;
ch=L_CONST;
break;
case '+': case '-':
case '*': case '/': case '%': case '&':
/* case '|': */ case '^': case '=':
case '?':
{
unsigned char *ptr;
for(ptr= fnin;*ptr;ptr++)
if(the_funs[*ptr].fn_str[0]==ch)
break;
#ifdef TEST
if(!*ptr)
panic("Can't find fnin[] entry for '%c'",ch);
#endif
byte_value= *ptr;
}
break;
case ':':
byte_value=IF;
break;
case '!':
case '<':
case '>':
if(*instr!='=') {
byte_value = (ch=='<') ? LESS : (ch=='>') ? GREATER : NOT;
break;
}
instr++;
byte_value = (ch=='<') ? LESSEQ : (ch=='>') ? GREATEQ : NOTEQUAL;
ch = (ch=='<') ? LE : (ch=='>') ? GE : NE;
break;
case '\'':
case ';':
case '[':
case '\\':
case ']':
case '`':
case '{':
case '}':
case '~':
bad_chr:
parse_error=BAD_CHAR;
return ERROR;
case '#':
begin=instr-1;
while(*instr && (isalnum(*instr) || *instr=='_'))
instr++;
ch= *instr;
*instr=0;
if(!stricmp(begin,tname))
byte_value=F_TRUE;
else if(!stricmp(begin,fname))
byte_value=F_FALSE;
else if(!stricmp(begin,iname) && (begin[4]==0 || !stricmp(begin+4,"inity")))
byte_value=CONST_INF;
else if(!stricmp(begin,mname) ||
!stricmp(begin,"#ninf"))
byte_value=CONST_NINF;
else if(!stricmp(begin,nname) ||
!stricmp(begin,"#nan"))
byte_value=CONST_NAN;
else {
for(n=1;n<=ERR_MAX;n++)
if(!stricmp(begin,ename[n]))
break;
if(n>ERR_MAX)
n=BAD_CHAR;
new->n_x.v_int=n;
byte_value=CONST_ERR;
}
*instr=ch;
ch=L_CONST;
break;
default:
if(!a0 && (ch=='@' || ch=='$'))
goto bad_chr;
if(a0 && ch=='@') {
begin=instr;
while(*instr && (isalpha(*instr) || isdigit(*instr) || *instr=='_'))
instr++;
n=instr-begin;
} else {
begin=instr-1;
byte_value=parse_cell_or_range(&begin,&(new->n_x.v_rng));
if(byte_value) {
if((byte_value& ~0x3)==R_CELL)
ch=L_CELL;
else
ch=L_RANGE;
instr=begin;
break;
}
while(*instr && (isalpha(*instr) || isdigit(*instr) || *instr=='_'))
instr++;
n=instr-begin;
while(isspace(*instr))
instr++;
if(*instr!='(') {
ch=L_VAR;
byte_value=VAR;
new->n_x.v_var=find_or_make_var(begin,n);
break;
}
}
tmp_ch=begin[n];
begin[n]='\0';
fp=hash_find(parse_hash,begin);
begin[n]=tmp_ch;
byte_value= ERROR;
if(!fp) {
parse_error=BAD_FUNC;
return ERROR;
}
if(fp>=the_funs && fp<=&the_funs[USR1])
byte_value=fp-the_funs;
else {
for(nn=0;nn<n_usr_funs;nn++) {
if(fp>=&usr_funs[nn][0] && fp<=&usr_funs[nn][usr_n_funs[nn]]) {
byte_value=USR1+nn;
new->sub_value=fp-&usr_funs[nn][0];
break;
}
}
#ifdef TEST
if(nn==n_usr_funs) {
io_error_msg("Couln't turn fp into a ##");
parse_error=BAD_FUNC;
return ERROR;
}
#endif
}
if(fp->fn_argn&X_J)
ch= byte_value==F_IF ? L_FN3 : L_FN2;
else if(fp->fn_argt[0]=='R' || fp->fn_argt[0]=='E')
ch=L_FN1R-1+fp->fn_argn-X_A0;
else
ch=L_FN0 + fp->fn_argn-X_A0;
break;
}
/* new->node_type=ch; */
new->comp_value=byte_value;
yylval=new;
return ch;
}
/* Return value is
0 if it doesn't look like a cell or a range,
R_CELL if it is a cell (ptr now points past the characters, lr and lc hold the row and col of the cell)
RANGE if it is a range (ptr points past the chars)
*/
unsigned char
parse_cell_or_range FUN2(char **,ptr, struct rng *,retp)
{
if(a0) {
unsigned tmpc,tmpr;
char *p;
int abz = ROWREL|COLREL;
p= *ptr;
tmpc=0;
if(*p=='$') {
abz-=COLREL;
p++;
}
if(!isalpha(*p))
return 0;
tmpc=str_to_col(&p);
if(tmpc<MIN_COL || tmpc>MAX_COL)
return 0;
if(*p=='$') {
abz-=ROWREL;
p++;
}
if(!isdigit(*p))
return 0;
for(tmpr=0;isdigit(*p);p++)
tmpr=tmpr*10 + *p - '0';
if(tmpr<MIN_ROW || tmpr>MAX_ROW)
return 0;
if(*p==':' || *p=='.') {
unsigned tmpc1,tmpr1;
abz = ((abz&COLREL) ? LCREL : 0)|((abz&ROWREL) ? LRREL : 0)|HRREL|HCREL;
p++;
if(*p=='$') {
abz-=HCREL;
p++;
}
if(!isalpha(*p))
return 0;
tmpc1=str_to_col(&p);
if(tmpc1<MIN_COL || tmpc1>MAX_COL)
return 0;
if(*p=='$') {
abz-=HRREL;
p++;
}
if(!isdigit(*p))
return 0;
for(tmpr1=0;isdigit(*p);p++)
tmpr1=tmpr1*10 + *p - '0';
if(tmpr1<MIN_ROW || tmpr1>MAX_ROW)
return 0;
if(tmpr<tmpr1) {
retp->lr=tmpr;
retp->hr=tmpr1;
} else {
retp->lr=tmpr1;
retp->hr=tmpr;
}
if(tmpc<tmpc1) {
retp->lc=tmpc;
retp->hc=tmpc1;
} else {
retp->lc=tmpc1;
retp->hc=tmpc;
}
*ptr= p;
return RANGE | abz;
}
retp->lr = retp->hr = tmpr;
retp->lc = retp->hc = tmpc;
*ptr=p;
return R_CELL | abz;
} else {
char *p;
unsigned char retr;
unsigned char retc;
int ended;
long num;
CELLREF tmp;
#define CK_ABS_R(x) ((x)<MIN_ROW || (x)>MAX_ROW)
#define CK_REL_R(x) (((x)>0 && MAX_ROW-(x)<cur_row) \
|| ((x)<0 && MIN_ROW-(x)>cur_row))
#define CK_ABS_C(x) ((x)<MIN_COL || (x)>MAX_COL)
#define CK_REL_C(x) (((x)>0 && MAX_COL-(x)<cur_col) \
|| ((x)<0 && MIN_COL-(x)>cur_col))
#define MAYBEREL(p) (*(p)=='[' && (isdigit((p)[1]) || (((p)[1]=='+' || (p)[1]=='-') && isdigit((p)[2]))))
p= *ptr;
retr=0;
retc=0;
ended=0;
while(ended==0) {
switch(*p) {
case 'r':
case 'R':
if(retr) {
ended++;
break;
}
p++;
retr=R_CELL;
if(isdigit(*p)) {
num=astol(&p);
if (CK_ABS_R(num))
return 0;
retp->lr= retp->hr=num;
} else if(MAYBEREL(p)) {
p++;
num=astol(&p);
if (CK_REL_R(num))
return 0;
retp->lr= retp->hr=num+cur_row;
retr|=ROWREL;
if(*p==':') {
retr=RANGE|LRREL|HRREL;
p++;
num=astol(&p);
if (CK_REL_R(num))
return 0;
retp->hr=num+cur_row;
}
if(*p++!=']')
return 0;
} else if(retc || *p=='c' || *p=='C') {
retr|=ROWREL;
retp->lr= retp->hr=cur_row;
} else
return 0;
if(*p==':' && retr!=(RANGE|LRREL|HRREL)) {
retr= (retr&ROWREL) ? RANGE|LRREL : RANGE;
p++;
if(isdigit(*p)) {
num=astol(&p);
if (CK_ABS_R(num))
return 0;
retp->hr=num;
} else if(MAYBEREL(p)) {
p++;
num=astol(&p);
if (CK_REL_R(num))
return 0;
retp->hr=num+cur_row;
retr|=HRREL;
if(*p++!=']')
return 0;
} else
return 0;
}
if(retc)
ended++;
break;
case 'c':
case 'C':
if(retc) {
ended++;
break;
}
p++;
retc=R_CELL;
if(isdigit(*p)) {
num=astol(&p);
if (CK_ABS_C(num))
return 0;
retp->lc= retp->hc=num;
} else if(MAYBEREL(p)) {
p++;
num=astol(&p);
if (CK_REL_C(num))
return 0;
retp->lc= retp->hc=num+cur_col;
retc|=COLREL;
if(*p==':') {
retc=RANGE|LCREL|HCREL;
p++;
num=astol(&p);
if (CK_REL_C(num))
return 0;
retp->hc=num+cur_col;
}
if(*p++!=']')
return 0;
} else if(retr || *p=='r' || *p=='R') {
retc|=COLREL;
retp->lc= retp->hc=cur_col;
} else
return 0;
if(*p==':' && retc!=(RANGE|LCREL|HCREL)) {
retc= (retc&COLREL) ? RANGE|LCREL : RANGE;
p++;
if(isdigit(*p)) {
num=astol(&p);
if (CK_ABS_C(num))
return 0;
retp->hc=num;
} else if(MAYBEREL(p)) {
p++;
num=astol(&p);
if (CK_REL_C(num))
return 0;
retp->hc=num+cur_col;
retc|=HCREL;
if(*p++!=']')
return 0;
} else
return 0;
}
if(retr)
ended++;
break;
default:
if(retr) {
*ptr=p;
retp->lc=MIN_COL;
retp->hc=MAX_COL;
if((retr|ROWREL)==(R_CELL|ROWREL))
return (retr&ROWREL) ? (RANGE|LRREL|HRREL) : RANGE;
else
return retr;
} else if(retc) {
*ptr=p;
retp->lr=MIN_ROW;
retp->hr=MAX_COL;
if((retc|COLREL)==(R_CELL|COLREL))
return (retc&COLREL) ? (RANGE|LCREL|HCREL) : RANGE;
else
return retc;
}
return 0;
}
}
if(!retr || !retc)
return 0;
*ptr=p;
if(retp->lr>retp->hr)
tmp=retp->lr,retp->lr=retp->hr,retp->hr=tmp;
if(retp->lc>retp->hc)
tmp=retp->lc,retp->lc=retp->hc,retp->hc=tmp;
if((retr|ROWREL)==(R_CELL|ROWREL)) {
if((retc|COLREL)==(R_CELL|COLREL))
return retr|retc;
return (retr&ROWREL) ? (retc|LRREL|HRREL) : retc;
}
if((retc|COLREL)==(R_CELL|COLREL))
return (retc&COLREL) ? (retr|LCREL|HCREL) : retr;
return retr|retc;
}
}
int
str_to_col FUN1(char **,str)
{
int ret;
char c,cc,ccc;
#if MAX_COL>702
char cccc;
#endif
ret=0;
c=str[0][0];
if(!isalpha((cc=str[0][1]))) {
(*str)++;
return MIN_COL + (isupper(c) ? c-'A' : c-'a');
}
if(!isalpha((ccc=str[0][2]))) {
(*str)+=2;
return MIN_COL+26 + (isupper(c) ? c-'A' : c-'a')*26 + (isupper(cc) ? cc-'A' : cc-'a');
}
#if MAX_COL>702
if(!isalpha((cccc=str[0][3]))) {
(*str)+=3;
return MIN_COL+702 + (isupper(c) ? c-'A' : c-'a')*26*26 + (isupper(cc) ? cc-'A' : cc-'a')*26 + (isupper(ccc) ? ccc-'A' : ccc-'a');
}
if(!isalpha(str[0][4])) {
(*str)+=4;
return MIN_COL+18278 + (isupper(c) ? c-'A' : c-'a')*26*26*26 + (isupper(cc) ? cc-'A' : cc-'a')*26*26 + (isupper(ccc) ? ccc-'A' : ccc-'a')*26 + (isupper(cccc) ? cccc-'A' : cccc-'a');
}
#endif
return 0;
}