diff options
author | Bdale Garbee <bdale@gag.com> | 2017-12-11 21:39:38 -0700 |
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committer | Bdale Garbee <bdale@gag.com> | 2017-12-11 21:39:38 -0700 |
commit | 8e0b575ad1dfd5a49136d3fe945d27f6afda1178 (patch) | |
tree | 74657870764e6a3792bdd7e90acd725353c20904 /src/lisp/ao_lisp_atom.c | |
parent | 132b92a95bdebabf573a680301bfb1e93eaa6721 (diff) | |
parent | fe38c22595b050435dbacd35f1baae064fb7de75 (diff) |
Merge branch 'branch-1.8' into debian
Diffstat (limited to 'src/lisp/ao_lisp_atom.c')
-rw-r--r-- | src/lisp/ao_lisp_atom.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/src/lisp/ao_lisp_atom.c b/src/lisp/ao_lisp_atom.c deleted file mode 100644 index 8c9e8ed1..00000000 --- a/src/lisp/ao_lisp_atom.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright © 2016 Keith Packard <keithp@keithp.com> - * - * This program 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; version 2 of the License. - * - * This program 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 this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include "ao_lisp.h" - -static int name_size(char *name) -{ - return sizeof(struct ao_lisp_atom) + strlen(name) + 1; -} - -static int atom_size(void *addr) -{ - struct ao_lisp_atom *atom = addr; - if (!atom) - return 0; - return name_size(atom->name); -} - -static void atom_mark(void *addr) -{ - struct ao_lisp_atom *atom = addr; - - for (;;) { - atom = ao_lisp_poly_atom(atom->next); - if (!atom) - break; - if (ao_lisp_mark_memory(&ao_lisp_atom_type, atom)) - break; - } -} - -static void atom_move(void *addr) -{ - struct ao_lisp_atom *atom = addr; - int ret; - - for (;;) { - struct ao_lisp_atom *next = ao_lisp_poly_atom(atom->next); - - if (!next) - break; - ret = ao_lisp_move_memory(&ao_lisp_atom_type, (void **) &next); - if (next != ao_lisp_poly_atom(atom->next)) - atom->next = ao_lisp_atom_poly(next); - if (ret) - break; - atom = next; - } -} - -const struct ao_lisp_type ao_lisp_atom_type = { - .mark = atom_mark, - .size = atom_size, - .move = atom_move, - .name = "atom" -}; - -struct ao_lisp_atom *ao_lisp_atoms; - -struct ao_lisp_atom * -ao_lisp_atom_intern(char *name) -{ - struct ao_lisp_atom *atom; - - for (atom = ao_lisp_atoms; atom; atom = ao_lisp_poly_atom(atom->next)) { - if (!strcmp(atom->name, name)) - return atom; - } -#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 - ao_lisp_string_stash(0, name); - atom = ao_lisp_alloc(name_size(name)); - name = ao_lisp_string_fetch(0); - if (atom) { - atom->type = AO_LISP_ATOM; - atom->next = ao_lisp_atom_poly(ao_lisp_atoms); - ao_lisp_atoms = atom; - strcpy(atom->name, name); - } - return atom; -} - -struct ao_lisp_frame *ao_lisp_frame_global; -struct ao_lisp_frame *ao_lisp_frame_current; - -static void -ao_lisp_atom_init(void) -{ - if (!ao_lisp_frame_global) - ao_lisp_frame_global = ao_lisp_frame_new(0); -} - -ao_poly * -ao_lisp_atom_ref(struct ao_lisp_frame *frame, ao_poly atom) -{ - ao_poly *ref; - ao_lisp_atom_init(); - while (frame) { - ref = ao_lisp_frame_ref(frame, atom); - if (ref) - return ref; - frame = ao_lisp_poly_frame(frame->prev); - } - if (ao_lisp_frame_global) { - ref = ao_lisp_frame_ref(ao_lisp_frame_global, atom); - if (ref) - return ref; - } - return NULL; -} - -ao_poly -ao_lisp_atom_get(ao_poly atom) -{ - ao_poly *ref = ao_lisp_atom_ref(ao_lisp_frame_current, atom); - - if (!ref && ao_lisp_frame_global) - ref = ao_lisp_frame_ref(ao_lisp_frame_global, atom); -#ifdef ao_builtin_frame - if (!ref) - ref = ao_lisp_frame_ref(ao_lisp_poly_frame(ao_builtin_frame), atom); -#endif - if (ref) - return *ref; - return ao_lisp_error(AO_LISP_UNDEFINED, "undefined atom %s", ao_lisp_poly_atom(atom)->name); -} - -ao_poly -ao_lisp_atom_set(ao_poly atom, ao_poly val) -{ - ao_poly *ref = ao_lisp_atom_ref(ao_lisp_frame_current, atom); - - if (!ref && ao_lisp_frame_global) - ref = ao_lisp_frame_ref(ao_lisp_frame_global, atom); - if (ref) - *ref = val; - else - ao_lisp_frame_add(&ao_lisp_frame_global, atom, val); - return val; -} - -void -ao_lisp_atom_print(ao_poly a) -{ - struct ao_lisp_atom *atom = ao_lisp_poly_atom(a); - printf("%s", atom->name); -} |