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remove unnecessary error checks

This commit is contained in:
Yuichi Nishiwaki 2015-06-27 17:50:14 +09:00
parent 4d18610a79
commit 1bed1bd420
1 changed files with 4 additions and 29 deletions
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33
extlib/benz/codegen.c
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@ -13,7 +13,7 @@ lookup(pic_state PIC_UNUSED(*pic), pic_value var, struct pic_env *env)
{
khiter_t it;
assert(pic_var_p(var));
pic_assert_type(pic, var, var);
while (env != NULL) {
it = kh_get(env, &env->map, pic_ptr(var));
@ -30,9 +30,10 @@ pic_resolve(pic_state *pic, pic_value var, struct pic_env *env)
{
pic_sym *uid;
assert(pic_var_p(var));
assert(env != NULL);
pic_assert_type(pic, var, var);
while ((uid = lookup(pic, var, env)) == NULL) {
if (pic_sym_p(var)) {
break;
@ -145,26 +146,14 @@ expand_lambda(pic_state *pic, pic_value expr, struct pic_env *env)
struct pic_env *in;
pic_value a, deferred;
if (pic_length(pic, expr) < 2) {
pic_errorf(pic, "syntax error");
}
in = pic_make_env(pic, env);
for (a = pic_cadr(pic, expr); pic_pair_p(a); a = pic_cdr(pic, a)) {
pic_value var = pic_car(pic, a);
if (! pic_var_p(var)) {
pic_errorf(pic, "syntax error");
}
pic_add_variable(pic, in, var);
pic_add_variable(pic, in, pic_car(pic, a));
}
if (pic_var_p(a)) {
pic_add_variable(pic, in, a);
}
else if (! pic_nil_p(a)) {
pic_errorf(pic, "syntax error");
}
deferred = pic_list1(pic, pic_nil_value());
@ -189,14 +178,7 @@ expand_define(pic_state *pic, pic_value expr, struct pic_env *env, pic_value def
expr = pic_list3(pic, pic_obj_value(pic->uDEFINE), var, pic_cons(pic, pic_obj_value(pic->sLAMBDA), pic_cons(pic, val, pic_cddr(pic, expr))));
}
if (pic_length(pic, expr) != 3) {
pic_errorf(pic, "syntax error");
}
var = pic_cadr(pic, expr);
if (! pic_var_p(var)) {
pic_errorf(pic, "binding to non-variable object");
}
if ((uid = pic_find_variable(pic, env, var)) == NULL) {
uid = pic_add_variable(pic, env, var);
} else {
@ -213,14 +195,7 @@ expand_defmacro(pic_state *pic, pic_value expr, struct pic_env *env)
pic_value var, val;
pic_sym *uid;
if (pic_length(pic, expr) != 3) {
pic_errorf(pic, "syntax error");
}
var = pic_cadr(pic, expr);
if (! pic_var_p(var)) {
pic_errorf(pic, "binding to non-variable object");
}
if ((uid = pic_find_variable(pic, env, var)) == NULL) {
uid = pic_add_variable(pic, env, var);
}