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authorAryadev Chavali <aryadev@aryadevchavali.com>2025-10-19 23:04:04 +0100
committerAryadev Chavali <aryadev@aryadevchavali.com>2025-10-19 23:04:04 +0100
commit66c5134eb58e8566f564d59776bd5431c6333828 (patch)
tree1d852cd3f28eea044f244d6999619b23b6b2a6aa /impl/tag.c
parent913b34588ffaf769d693ce91e322f8b67dc7817f (diff)
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Remove impl folder
Diffstat (limited to 'impl/tag.c')
-rw-r--r--impl/tag.c76
1 files changed, 0 insertions, 76 deletions
diff --git a/impl/tag.c b/impl/tag.c
deleted file mode 100644
index e6396cc..0000000
--- a/impl/tag.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/* Copyright (C) 2025 Aryadev Chavali
-
- * 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 Unlicense for details.
-
- * You may distribute and modify this code under the terms of the Unlicense,
- * which you should have received a copy of along with this program. If not,
- * please go to <https://unlicense.org/>.
-
- * Created: 2025-08-19
- * Description: Pointer tagging
- */
-
-#include <assert.h>
-#include <stdlib.h>
-
-#include <alisp.h>
-
-lisp_t *tag_int(i64 i)
-{
- return TAG((u64)i, INT);
-}
-
-lisp_t *tag_sym(char *str)
-{
- return TAG((u64)str, SYM);
-}
-
-lisp_t *tag_vec(vec_t *vec)
-{
- return TAG((u64)vec, VEC);
-}
-
-lisp_t *tag_cons(cons_t *cons)
-{
- return TAG((u64)cons, CONS);
-}
-
-tag_t get_tag(lisp_t *lisp)
-{
- static_assert(NUM_TAGS == 5);
- if (!lisp)
- return TAG_NIL;
- else if (IS_TAG(lisp, INT))
- return TAG_INT;
-
- return (u64)lisp & 0xFF;
-}
-
-i64 as_int(lisp_t *obj)
-{
- assert(IS_TAG(obj, INT));
- u64 p_obj = (u64)obj;
- return UNTAG(p_obj, INT) | // Delete the tag
- (NTH_BYTE(p_obj, 7) & 0x80) << 56 // duplicate the MSB (preserve sign)
- ;
-}
-
-char *as_sym(lisp_t *obj)
-{
- assert(IS_TAG(obj, SYM));
- return (char *)UNTAG(obj, SYM);
-}
-
-cons_t *as_cons(lisp_t *obj)
-{
- assert(IS_TAG(obj, CONS));
- return (cons_t *)UNTAG(obj, CONS);
-}
-
-vec_t *as_vec(lisp_t *obj)
-{
- assert(IS_TAG(obj, VEC));
- return (vec_t *)UNTAG(obj, VEC);
-}