altos/lisp: Separate out values from atoms

[fw/altos] / src / lisp / ao_lisp_atom.c

diff --git a/src/lisp/ao_lisp_atom.c b/src/lisp/ao_lisp_atom.c
index 65282142cdb4ca64e85a8fad5c22642b575c358b..e5d28c3ba2801bf86ec8f4f74d9c33d4353c1b71 100644 (file)
--- a/src/lisp/ao_lisp_atom.c
+++ b/src/lisp/ao_lisp_atom.c
@@ -17,6 +17,12 @@
 
 #include "ao_lisp.h"
 
+#if 0
+#define DBG(...)       printf(__VA_ARGS__)
+#else
+#define DBG(...)
+#endif
+
 static int name_size(char *name)
 {
        return sizeof(struct ao_lisp_atom) + strlen(name) + 1;
@@ -34,74 +40,106 @@ static void atom_mark(void *addr)
 {
        struct ao_lisp_atom     *atom = addr;
 
-       if (atom->next == AO_LISP_ATOM_CONST)
-               return;
-
+       DBG ("\tatom start %s\n", atom->name);
        for (;;) {
-               ao_lisp_poly_mark(atom->val);
-               atom = atom->next;
+               atom = ao_lisp_poly_atom(atom->next);
                if (!atom)
                        break;
+               DBG("\t\tatom mark %s %d\n", atom->name, (uint8_t *) atom - ao_lisp_const);
                if (ao_lisp_mark_memory(atom, atom_size(atom)))
                        break;
        }
+       DBG ("\tatom done\n");
 }
 
 static void atom_move(void *addr)
 {
        struct ao_lisp_atom     *atom = addr;
 
-       if (atom->next == AO_LISP_ATOM_CONST)
-               return;
-
+       DBG("\tatom move start %s %d next %s %d\n",
+           atom->name, ((uint8_t *) atom - ao_lisp_const),
+           atom->next ? ao_lisp_poly_atom(atom->next)->name : "(none)",
+           atom->next ? ((uint8_t *) ao_lisp_poly_atom(atom->next) - ao_lisp_const) : 0);
        for (;;) {
                struct ao_lisp_atom     *next;
 
-               atom->val = ao_lisp_poly_move(atom->val);
-               next = ao_lisp_move_memory(atom->next, atom_size(atom->next));
+               next = ao_lisp_poly_atom(atom->next);
+               next = ao_lisp_move_memory(next, atom_size(next));
                if (!next)
                        break;
-               atom->next = next;
+               DBG("\t\tatom move %s %d->%d\n", next->name, ((uint8_t *) ao_lisp_poly_atom(atom->next) - ao_lisp_const), ((uint8_t *) next - ao_lisp_const));
+               atom->next = ao_lisp_atom_poly(next);
                atom = next;
        }
+       DBG("\tatom move end\n");
 }
 
-const struct ao_lisp_mem_type ao_lisp_atom_type = {
+const struct ao_lisp_type ao_lisp_atom_type = {
        .mark = atom_mark,
        .size = atom_size,
        .move = atom_move,
 };
 
-struct ao_lisp_atom    *atoms;
+struct ao_lisp_atom    *ao_lisp_atoms;
 
 struct ao_lisp_atom *
 ao_lisp_atom_intern(char *name)
 {
        struct ao_lisp_atom     *atom;
-       int                     b;
 
-       for (atom = atoms; atom; atom = atom->next) {
+       for (atom = ao_lisp_atoms; atom; atom = ao_lisp_poly_atom(atom->next)) {
                if (!strcmp(atom->name, name))
                        return atom;
        }
-       for (b = 0; ao_lisp_builtins[b]; b++)
-               if (!strcmp(ao_lisp_builtins[b]->name, name))
-                       return (struct ao_lisp_atom *) ao_lisp_builtins[b];
-       if (!atoms)
-               ao_lisp_root_add(&ao_lisp_atom_type, (void **) &atoms);
+#ifdef ao_builtin_atoms
+       for (atom = ao_lisp_poly_atom(ao_builtin_atoms); atom; atom = ao_lisp_poly_atom(atom->next)) {
+               if (!strcmp(atom->name, name))
+                       return atom;
+       }
+#endif
        atom = ao_lisp_alloc(name_size(name));
        if (atom) {
                atom->type = AO_LISP_ATOM;
-               atom->next = atoms;
-               atoms = atom;
+               atom->next = ao_lisp_atom_poly(ao_lisp_atoms);
+               if (!ao_lisp_atoms)
+                       ao_lisp_root_add(&ao_lisp_atom_type, &ao_lisp_atoms);
+               ao_lisp_atoms = atom;
                strcpy(atom->name, name);
-               atom->val = AO_LISP_NIL;
        }
        return atom;
 }
 
+static struct ao_lisp_frame    *globals;
+
+ao_poly
+ao_lisp_atom_get(ao_poly atom)
+{
+       struct ao_lisp_frame    *frame = globals;
+#ifdef ao_builtin_frame
+       if (!frame)
+               frame = ao_lisp_poly_frame(ao_builtin_frame);
+#endif
+       return ao_lisp_frame_get(frame, atom);
+}
+
+ao_poly
+ao_lisp_atom_set(ao_poly atom, ao_poly val)
+{
+       if (!ao_lisp_frame_set(globals, atom, val)) {
+               globals = ao_lisp_frame_add(globals, atom, val);
+               if (!globals->next) {
+                       ao_lisp_root_add(&ao_lisp_frame_type, &globals);
+#ifdef ao_builtin_frame
+                       globals->next = ao_builtin_frame;
+#endif
+               }
+       }
+       return val;
+}
+
 void
-ao_lisp_atom_print(struct ao_lisp_atom *a)
+ao_lisp_atom_print(ao_poly a)
 {
-       fputs(a->name, stdout);
+       struct ao_lisp_atom *atom = ao_lisp_poly_atom(a);
+       printf("%s", atom->name);
 }