Add progn special form

src/main.c

@@ -17,15 +17,28 @@ int main(int argc, const char **argv) {
     ucl_state_put(state, "if", ucl_special_create(ucl_special_if));
     ucl_state_put(state, "defun", ucl_special_create(ucl_special_defun));
     ucl_state_put(state, "setq", ucl_special_create(ucl_special_setq));
+    ucl_state_put(state, "progn", ucl_special_create(ucl_special_progn));
+
+    // TODO:
+    //   - progn
+    //   - quote
+    //   - iteration
+    //   - lambda
 
     ucl_state_put(state, "print", ucl_builtin_create(ucl_builtin_print));
     ucl_state_put(state, "list", ucl_builtin_create(ucl_builtin_list));
+    // TODO:
+    //   - print with newline
+    //   - object -> string
+    //   - formatted printing?
 
     ucl_state_put(state, "+", ucl_builtin_create(ucl_builtin_add));
     ucl_state_put(state, "-", ucl_builtin_create(ucl_builtin_sub));
     ucl_state_put(state, "*", ucl_builtin_create(ucl_builtin_mul));
     ucl_state_put(state, "/", ucl_builtin_create(ucl_builtin_div));
     ucl_state_put(state, "%", ucl_builtin_create(ucl_builtin_mod));
+    // TODO:
+    //    - Floats or nah?
 
     ucl_state_put(state, "concat", ucl_builtin_create(ucl_builtin_concat));
 
@@ -35,6 +48,13 @@ int main(int argc, const char **argv) {
     ucl_state_put(state, "string-p", ucl_builtin_create(ucl_builtin_string_p));
     ucl_state_put(state, "int-p", ucl_builtin_create(ucl_builtin_int_p));
     ucl_state_put(state, "list-p", ucl_builtin_create(ucl_builtin_list_p));
+    // TODO:
+    //   - equality
+    //   - map
+    //   - reduce
+    //   - car
+    //   - cdr
+    //   - nth
 
     if (argc < 2) {
         while (1) {

src/special.c

@@ -44,13 +44,7 @@ struct ucl_object *ucl_special_if(struct ucl_state *state, struct ucl_object *ar
         return ucl_evaluate(state, true_form);
     }
 
-    struct ucl_object *result = NULL;
-
-    FOREACH_LIST(false_forms, iter, form) {
-        result = ucl_evaluate(state, form);
-    }
-
-    return (result == NULL) ? ucl_nil_create() : result;
+    return ucl_progn(state, false_forms);
 }
 
 
@@ -80,13 +74,18 @@ struct ucl_object *ucl_special_defun(struct ucl_state *state, struct ucl_object
 struct ucl_object *ucl_special_setq(struct ucl_state *state, struct ucl_object *args) {
     // TODO: Check arguments
     struct ucl_object *sym = ucl_car(args);
+    struct ucl_state *root_state = ucl_state_get_root(state);
     if (sym->type != UCL_TYPE_SYMBOL) {
         return ucl_error_create("First argument to defun must be a symbol");
     }
 
     struct ucl_object *value = ucl_evaluate(state, ucl_list_nth(args, 1));
 
-    ucl_state_put(ucl_state_get_root(state), sym->symbol, value);
+    ucl_state_put(root_state, sym->symbol, value);
 
     return sym;
 }
+
+struct ucl_object *ucl_special_progn(struct ucl_state *state, struct ucl_object *args) {
+    return ucl_progn(state, args);
+}

src/special.h

@@ -7,5 +7,6 @@ struct ucl_object *ucl_special_let(struct ucl_state *state, struct ucl_object *a
 struct ucl_object *ucl_special_if(struct ucl_state *state, struct ucl_object *args);
 struct ucl_object *ucl_special_defun(struct ucl_state *state, struct ucl_object *args);
 struct ucl_object *ucl_special_setq(struct ucl_state *state, struct ucl_object *args);
+struct ucl_object *ucl_special_progn(struct ucl_state *state, struct ucl_object *args);
 
 #endif