/*FUNCTION*/
LVAL c_newnode(tpLspObject pLSP,
unsigned char type
){
/*noverbatim
CUT*/
LVAL p;
if( null((p = getnode())) )
return NIL;
settype(p,type);
switch( type )
{
case NTYPE_CON:
return NULL;
case NTYPE_FLO:
setfloat(p,0.0);
break;
case NTYPE_INT:
setint(p,0);
break;
case NTYPE_STR:
setstring(p,NULL);
break;
case NTYPE_SYM:
setsymbol(p,NULL);
break;
case NTYPE_CHR:
setchar(p,(char)0);
break;
default:
return NULL;
}
return p;
}
NODE *make_floatnode(FLONUM f)
{
NODE *nd = newnode(FLOAT);
setfloat(nd, f);
return (nd);
}
NODE *cnv_node_to_numnode(NODE *ndi)
{
NODE *val;
int dr;
char s2[MAX_NUMBER], *s = s2;
if (is_number(ndi))
return (ndi);
ndi = cnv_node_to_strnode(ndi);
if (ndi == UNBOUND) return (UNBOUND);
if (((getstrlen(ndi)) < MAX_NUMBER) && (dr = numberp(ndi)))
{
if (backslashed(ndi))
noparity_strnzcpy(s, getstrptr(ndi), getstrlen(ndi));
else
strnzcpy(s, getstrptr(ndi), getstrlen(ndi));
if (*s == '+') ++s;
if (s2[getstrlen(ndi) - 1] == '.') s2[getstrlen(ndi) - 1] = 0;
if (/*TRUE || */ dr - 1 || getstrlen(ndi) > 9)
{
val = newnode(FLOAT);
setfloat(val, atof(s));
}
else
{
val = newnode(INT);
setint(val, atol(s));
}
gcref(ndi);
return (val);
}
else
{
gcref(ndi);
return (UNBOUND);
}
}
/*
* local function to read an expression
*/
static LVAL _readexpr(tpLspObject pLSP,FILE *f)
{
int ch,ch1,ch2,i;
LVAL p;
char *s;
double dval;
long lval;
spaceat(ch,f);
if( ch == EOF )
{
return NIL;
}
if( ch == pLSP->cClose )
{
return NIL;
}
if( ch == pLSP->cOpen )/* Read a cons node. */
return readcons(pLSP,f);
/**** Note: XLISP allows 1E++10 as a symbol. This is dangerous.
We do not change XLISP (so far), but here I exclude all symbol
names starting with numeral. */
if( const_p1(ch) )/* Read a symbol. */
{
for( i = 0 ; const_p(ch) ; i++ ){
if( storech(pLSP,i,ch) )return NIL;
ch = getC(pLSP,f);
}
UNGETC(ch);
/* Recognize NIL and nil symbols. */
if( !strcmp(BUFFER,"NIL") || !strcmp(BUFFER,"nil") )
return NIL;
p = newsymbol();
s = StrDup( BUFFER );
if( null(p) || s == NULL )return NIL;
setsymbol(p,s);
return p;
}
if( ch == '\"' ){
ch = GETC(f);
storech(pLSP,0,0); /* inititalize the buffer */
if( ch != '\"' )goto SimpleString;
ch = GETC(f);
if( ch != '\"' ){
UNGETC(ch);
ch = '\"';/* ch should hold the first character of the string that is " now */
goto SimpleString;
}
ch = GETC(f);
/* multi line string */
for( i = 0 ; ch != EOF ; i++ ){
if( ch == '\"' ){
ch1 = GETC(f);
ch2 = GETC(f);
if( ch1 == '\"' && ch2 == '\"' )break;
UNGETC(ch2);
UNGETC(ch1);
}
if( ch == '\\' ){
ch = GETC(f);
s = escapers;
while( *s ){
if( *s++ == ch ){
ch = *s;
break;
}
if( *s )s++;
}
}
if( storech(pLSP,i,ch) )return NIL;
ch = GETC(f);
}
p = newstring();
s = StrDup( BUFFER );
if( null(p) || s == NULL )return NIL;
setstring(p,s);
return p;
}
if( ch == '\"' ){/* Read a string. */
ch = GETC(f);/* Eat the " character. */
SimpleString:
for( i = 0 ; ch != '\"' && ch != EOF ; i++ ){
if( ch == '\\' ){
ch = GETC(f);
s = escapers;
while( *s ){
if( *s++ == ch ){
ch = *s;
break;
}
if( *s )s++;
}
}
if( ch == '\n' )return NIL;
if( storech(pLSP,i,ch) )return NIL;
ch = GETC(f);
}
p = newstring();
s = StrDup( BUFFER );
if( null(p) || s == NULL )
{
return NIL;
}
setstring(p,s);
return p;
}
if( numeral1(ch) )
{
for( i = 0 ; isinset(ch,"0123456789+-eE.") ; i++ )
{
if( storech(pLSP,i,ch) )return NIL;
ch = getC(pLSP,f);
}
UNGETC(ch);
cnumeric(BUFFER,&i,&dval,&lval);
switch( i )
{
case 0:
return NIL;
case 1:
/* A float number is coming. */
p = newfloat();
if( null(p) )
{
return NIL;
}
setfloat(p,dval);
return p;
case 2:
/* An integer is coming. */
p = newint();
if( null(p) )
{
return NIL;
}
setint(p,lval);
return p;
default:
return NIL;
}
}
return NIL;
}
