causa-arcana-misc/lesson-lisp
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fix syntax "if"

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This commit is contained in:
Alex Kotov 2023-05-07 21:06:37 +04:00
parent b2acf41393
commit baf566703e
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
1 changed files with 2 additions and 2 deletions
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4
src/syntax.c
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@ -89,7 +89,7 @@ struct Object *syntax_if(
struct Object *const environment
) {
assert(Object_is_pair(args));
struct Object *const cond = args->pair.car;
struct Object *const cond_expr = args->pair.car;
struct Object *const then_else_list = args->pair.cdr;
assert(then_else_list);
assert(Object_is_pair(then_else_list));
@ -100,7 +100,7 @@ struct Object *syntax_if(
struct Object *const else_branch = else_list->pair.car;
assert(OBJECT_IS_NULL(else_list->pair.cdr));
if (Object_is_false(cond)) {
if (Object_is_false(eval(cond_expr, environment))) {
return eval(else_branch, environment);
} else {
return eval(then_branch, environment);