static void atom_mark(void *addr)
{
- struct ao_scheme_atom *atom = addr;
-
- for (;;) {
- atom = ao_scheme_poly_atom(atom->next);
- if (!atom)
- break;
- if (ao_scheme_mark_memory(&ao_scheme_atom_type, atom))
- break;
- }
+ MDBG_MOVE("mark atom %s\n", ((struct ao_scheme_atom *) addr)->name);
+ (void) addr;
}
static void atom_move(void *addr)
{
- struct ao_scheme_atom *atom = addr;
- int ret;
-
- for (;;) {
- struct ao_scheme_atom *next = ao_scheme_poly_atom(atom->next);
-
- if (!next)
- break;
- ret = ao_scheme_move_memory(&ao_scheme_atom_type, (void **) &next);
- if (next != ao_scheme_poly_atom(atom->next))
- atom->next = ao_scheme_atom_poly(next);
- if (ret)
- break;
- atom = next;
- }
+ (void) addr;
}
const struct ao_scheme_type ao_scheme_atom_type = {
struct ao_scheme_atom *ao_scheme_atoms;
static struct ao_scheme_atom *
-ao_scheme_atom_find(char *name)
+ao_scheme_atom_find(const char *name)
{
struct ao_scheme_atom *atom;
+#ifdef ao_builtin_atoms
+ if (!ao_scheme_atoms)
+ ao_scheme_atoms = ao_scheme_poly_atom(ao_builtin_atoms);
+#endif
for (atom = ao_scheme_atoms; atom; atom = ao_scheme_poly_atom(atom->next)) {
if (!strcmp(atom->name, name))
return atom;
}
-#ifdef ao_builtin_atoms
- for (atom = ao_scheme_poly_atom(ao_builtin_atoms); atom; atom = ao_scheme_poly_atom(atom->next)) {
- if (!strcmp(atom->name, name))
- return atom;
+ return NULL;
+}
+
+#ifdef AO_SCHEME_MAKE_CONST
+
+#define AO_SCHEME_BUILTIN_SYNTAX_ATOMS
+#include "ao_scheme_builtin.h"
+#undef AO_SCHEME_BUILTIN_SYNTAX_ATOMS
+
+static void
+ao_scheme_atom_mark_syntax(void)
+{
+ unsigned a;
+ for (a = 0; a < sizeof(syntax_atoms)/sizeof(syntax_atoms[0]); a++) {
+ struct ao_scheme_atom *atom = ao_scheme_atom_find(syntax_atoms[a]);
+ if (atom)
+ ao_scheme_mark_memory(&ao_scheme_atom_type, atom);
}
+}
+
+#else
+#define ao_scheme_atom_mark_syntax()
#endif
- return NULL;
+
+void
+ao_scheme_atom_move(void)
+{
+ struct ao_scheme_atom *atom;
+ ao_scheme_move_memory(&ao_scheme_atom_type, (void **) (void *) &ao_scheme_atoms);
+ for (atom = ao_scheme_atoms; atom; atom = ao_scheme_poly_atom(atom->next)) {
+ if (!ao_scheme_is_pool_addr(atom)) {
+ MDBG_DO(printf("atom out of pool %s\n", atom->name));
+ break;
+ }
+ MDBG_DO(printf("move atom %s\n", atom->name));
+ ao_scheme_poly_move(&atom->next, 0);
+ }
+}
+
+void
+ao_scheme_atom_check_references(void)
+{
+ struct ao_scheme_atom *atom;
+ ao_poly *prev = NULL;
+
+ ao_scheme_atom_mark_syntax();
+ for (atom = ao_scheme_atoms; atom; atom = ao_scheme_poly_atom(atom->next)) {
+ if (!ao_scheme_marked(atom)) {
+ MDBG_DO(printf("unreferenced atom %s\n", atom->name));
+ if (prev)
+ *prev = atom->next;
+ else
+ ao_scheme_atoms = ao_scheme_poly_atom(atom->next);
+ } else
+ prev = &atom->next;
+ }
}
static void
return ao_scheme_error(AO_SCHEME_UNDEFINED, "undefined atom %s", ao_scheme_poly_atom(atom)->name);
}
-ao_poly
-ao_scheme_atom_set(ao_poly atom, ao_poly val)
-{
- ao_poly *ref = ao_scheme_atom_ref(atom, NULL);
-
- if (!ref)
- return ao_scheme_error(AO_SCHEME_UNDEFINED, "undefined atom %s", ao_scheme_poly_atom(atom)->name);
- *ref = val;
- return val;
-}
-
ao_poly
ao_scheme_atom_def(ao_poly atom, ao_poly val)
{
}
void
-ao_scheme_atom_write(ao_poly a, bool write)
+ao_scheme_atom_write(FILE *out, ao_poly a, bool write)
{
struct ao_scheme_atom *atom = ao_scheme_poly_atom(a);
(void) write;
- printf("%s", atom->name);
+ fprintf(out, "%s", atom->name);
+}
+
+ao_poly
+ao_scheme_do_symbolp(struct ao_scheme_cons *cons)
+{
+ return ao_scheme_do_typep(_ao_scheme_atom_symbol3f, AO_SCHEME_ATOM, cons);
+}
+
+ao_poly
+ao_scheme_do_set(struct ao_scheme_cons *cons)
+{
+ ao_poly atom;
+ ao_poly val;
+ ao_poly *ref;
+
+ if (!ao_scheme_parse_args(_ao_scheme_atom_set, cons,
+ AO_SCHEME_ATOM|AO_SCHEME_ARG_RET_POLY, &atom,
+ AO_SCHEME_POLY, &val,
+ AO_SCHEME_ARG_END))
+ return AO_SCHEME_NIL;
+
+ ref = ao_scheme_atom_ref(atom, NULL);
+
+ if (!ref)
+ return ao_scheme_error(AO_SCHEME_UNDEFINED, "%v: undefined atom %v",
+ _ao_scheme_atom_set, atom);
+ *ref = val;
+ return val;
+}
+
+ao_poly
+ao_scheme_do_def(struct ao_scheme_cons *cons)
+{
+ ao_poly atom;
+ ao_poly val;
+
+ if (!ao_scheme_parse_args(_ao_scheme_atom_set, cons,
+ AO_SCHEME_ATOM|AO_SCHEME_ARG_RET_POLY, &atom,
+ AO_SCHEME_POLY, &val,
+ AO_SCHEME_ARG_END))
+ return AO_SCHEME_NIL;
+ return ao_scheme_atom_def(atom, val);
+}
+
+ao_poly
+ao_scheme_do_setq(struct ao_scheme_cons *cons)
+{
+ ao_poly atom;
+ ao_poly val;
+ ao_poly p;
+
+ if (!ao_scheme_parse_args(_ao_scheme_atom_set21, cons,
+ AO_SCHEME_ATOM|AO_SCHEME_ARG_RET_POLY, &atom,
+ AO_SCHEME_POLY, &val,
+ AO_SCHEME_ARG_END))
+ return AO_SCHEME_NIL;
+ if (!ao_scheme_atom_ref(atom, NULL))
+ return ao_scheme_error(AO_SCHEME_INVALID, "%v: symbol %v not defined",
+ _ao_scheme_atom_set21, atom);
+ /*
+ * Build the macro return -- `(set (quote ,atom) ,val)
+ */
+ ao_scheme_poly_stash(cons->cdr);
+ p = ao_scheme_cons(atom, AO_SCHEME_NIL);
+ p = ao_scheme_cons(_ao_scheme_atom_quote, p);
+ p = ao_scheme_cons(p, ao_scheme_poly_fetch());
+ return ao_scheme_cons(_ao_scheme_atom_set, p);
+}
+
+#ifdef AO_SCHEME_FEATURE_UNDEF
+ao_poly
+ao_scheme_do_undef(struct ao_scheme_cons *cons)
+{
+ ao_poly atom;
+
+ if (!ao_scheme_parse_args(_ao_scheme_atom_set, cons,
+ AO_SCHEME_ATOM|AO_SCHEME_ARG_RET_POLY, &atom,
+ AO_SCHEME_ARG_END))
+ return AO_SCHEME_NIL;
+ return ao_scheme_frame_del(ao_scheme_frame_global, atom);
}
+#endif
projects / fw / altos / blobdiff