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Allow booleanization of all types

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We now allow booleanization of all types. This means that empty versions
of all types now evaluate to false. So a Vector2(0,0), Dictionary(),
etc.

This allows you to write GDScript like:
if not Dictionary():
  print("Empty dict")

Booleanization can now also no longer fail. There is no more valid flag,
this changes Variant and GDNative API.
This commit is contained in:
Hein-Pieter van Braam
2017-09-18 20:02:47 +02:00
parent 85641c545b
commit 833c3917b2
6 changed files with 20 additions and 105 deletions
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27
modules/gdscript/gd_function.cpp
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@ -982,15 +982,8 @@ Variant GDFunction::call(GDInstance *p_instance, const Variant **p_args, int p_a
GET_VARIANT_PTR(test, 1);
bool valid;
bool result = test->booleanize(valid);
#ifdef DEBUG_ENABLED
if (!valid) {
bool result = test->booleanize();
err_text = "cannot evaluate conditional expression of type: " + Variant::get_type_name(test->get_type());
break;
}
#endif
if (result) {
int to = _code_ptr[ip + 2];
GD_ERR_BREAK(to < 0 || to > _code_size);
@ -1006,15 +999,8 @@ Variant GDFunction::call(GDInstance *p_instance, const Variant **p_args, int p_a
GET_VARIANT_PTR(test, 1);
bool valid;
bool result = test->booleanize(valid);
#ifdef DEBUG_ENABLED
if (!valid) {
bool result = test->booleanize();
err_text = "cannot evaluate conditional expression of type: " + Variant::get_type_name(test->get_type());
break;
}
#endif
if (!result) {
int to = _code_ptr[ip + 2];
GD_ERR_BREAK(to < 0 || to > _code_size);
@ -1107,14 +1093,7 @@ Variant GDFunction::call(GDInstance *p_instance, const Variant **p_args, int p_a
GET_VARIANT_PTR(test, 1);
#ifdef DEBUG_ENABLED
bool valid;
bool result = test->booleanize(valid);
if (!valid) {
err_text = "cannot evaluate conditional expression of type: " + Variant::get_type_name(test->get_type());
break;
}
bool result = test->booleanize();
if (!result) {