65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/* Copyright (C) 2025 Aryadev Chavali
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the Unlicense for details.
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* You may distribute and modify this code under the terms of the Unlicense,
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* which you should have received a copy of along with this program. If not,
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* please go to <https://unlicense.org/>.
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* Created: 2025-08-20
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* Description: Lisp constructors/destructors
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*/
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#include <malloc.h>
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#include "./alisp.h"
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lisp_t *make_int(i64 i)
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{
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return tag_int(i);
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}
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lisp_t *cons(sys_t *sys, lisp_t *car, lisp_t *cdr)
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{
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cons_t *cons = calloc(1, sizeof(*cons));
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cons->car = car;
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cons->cdr = cdr;
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lisp_t *lcons = tag_cons(cons);
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sys_register(sys, lcons);
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return lcons;
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}
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lisp_t *make_vec(sys_t *sys, u64 capacity)
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{
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vec_t *vec = calloc(1, sizeof(*vec));
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vec_init(vec, capacity);
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lisp_t *ptr = tag_vec(vec);
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sys_register(sys, ptr);
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return ptr;
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}
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lisp_t *intern(sys_t *sys, sv_t sv)
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{
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char *str = sym_table_find(&sys->symtable, sv);
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return tag_sym(str);
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}
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lisp_t *car(lisp_t *lsp)
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{
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if (!IS_TAG(lsp, CONS))
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return NIL;
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else
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return CAR(lsp);
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}
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lisp_t *cdr(lisp_t *lsp)
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{
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if (!IS_TAG(lsp, CONS))
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return NIL;
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else
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return CDR(lsp);
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}
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