* General Public License for more details.
*/
+#define DBG_EVAL 0
#include "ao_lisp.h"
#include "ao_lisp_read.h"
c = lex_unget_c;
lex_unget_c = 0;
} else {
-#if AO_LISP_ALTOS
- static uint8_t at_eol;
-
- if (at_eol) {
- ao_cmd_readline();
- at_eol = 0;
- }
- c = ao_cmd_lex();
- if (c == '\n')
- at_eol = 1;
-#else
- c = getchar();
-#endif
+ c = ao_lisp_getc();
}
return c;
}
int count;
c = lex_get();
-// if (jumping)
-// return nil;
if (c == EOF)
return EOF;
c &= 0x7f;
count = 1;
while (count <= 3) {
c = lex_get();
-// if (jumping)
-// return nil;
if (c == EOF)
return EOF;
c &= 0x7f;
for (;;) {
c = lexc();
if (lex_class & ENDOFFILE)
- return AO_LISP_NIL;
+ return END;
-// if (jumping)
-// return nil;
if (lex_class & WHITE)
continue;
+ if (lex_class & COMMENT) {
+ while ((c = lexc()) != '\n') {
+ if (lex_class & ENDOFFILE)
+ return END;
+ }
+ continue;
+ }
+
if (lex_class & (BRA|KET|QUOTEC)) {
add_token(c);
end_token();
if (lex_class & STRINGC) {
for (;;) {
c = lexc();
-// if (jumping)
-// return nil;
if (lex_class & (STRINGC|ENDOFFILE)) {
end_token();
return STRING;
}
add_token (c);
c = lexc ();
-// if (jumping)
-// return nil;
if (lex_class & (NOTNAME)) {
// if (lex_class & ENDOFFILE)
// clearerr (f);
static int
push_read_stack(int cons, int in_quote)
{
+ DBGI("push read stack %p %d\n", read_cons, in_quote);
+ DBG_IN();
if (cons) {
read_stack = ao_lisp_cons_cons(ao_lisp_cons_poly(read_cons),
ao_lisp_cons_cons(ao_lisp_int_poly(in_quote),
read_cons_tail && read_cons_tail->cdr;
read_cons_tail = ao_lisp_poly_cons(read_cons_tail->cdr))
;
+ } else {
+ read_cons = 0;
+ read_cons_tail = 0;
+ read_stack = 0;
}
+ DBG_OUT();
+ DBGI("pop read stack %p %d\n", read_cons, in_quote);
return in_quote;
}
ao_lisp_root_add(&ao_lisp_cons_type, &read_cons);
ao_lisp_root_add(&ao_lisp_cons_type, &read_cons_tail);
ao_lisp_root_add(&ao_lisp_cons_type, &read_stack);
+ been_here = 1;
}
parse_token = lex();
+ DBGI("token %d (%s)\n", parse_token, token_string);
cons = 0;
in_quote = 0;
cons++;
in_quote = 0;
parse_token = lex();
+ DBGI("token %d (%s)\n", parse_token, token_string);
}
switch (parse_token) {
- case ENDOFFILE:
+ case END:
default:
- v = AO_LISP_NIL;
+ if (cons)
+ ao_lisp_error(AO_LISP_EOF, "unexpected end of file");
+ return _ao_lisp_atom_eof;
break;
case NAME:
atom = ao_lisp_atom_intern(token_string);
}
parse_token = lex();
+ DBGI("token %d (%s)\n", parse_token, token_string);
}
return v;
}