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Allow exporting enums from GDScript

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Use as `export(E) ...`
Closes #12392
This commit is contained in:
Bojidar Marinov 2017-11-15 20:50:37 +02:00
parent 64caa4733c
commit e4a36d0eda
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GPG key ID: 4D546A8F1E091856
3 changed files with 100 additions and 16 deletions
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78
modules/gdscript/gdscript_parser.cpp
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@ -3758,22 +3758,82 @@ void GDScriptParser::_parse_class(ClassNode *p_class) {
current_export.hint = PROPERTY_HINT_NONE;
}
} else if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER) {
} else {
String identifier = tokenizer->get_token_identifier();
if (!ClassDB::is_parent_class(identifier, "Resource")) {
parenthesis++;
Node *subexpr = _parse_and_reduce_expression(p_class, true, true);
if (!subexpr) {
if (_recover_from_completion()) {
break;
}
return;
}
parenthesis--;
if (subexpr->type != Node::TYPE_CONSTANT) {
current_export = PropertyInfo();
_set_error("Export hint not a type or resource.");
_set_error("Expected a constant expression.");
}
current_export.type = Variant::OBJECT;
current_export.hint = PROPERTY_HINT_RESOURCE_TYPE;
current_export.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE;
Variant constant = static_cast<ConstantNode *>(subexpr)->value;
current_export.hint_string = identifier;
if (constant.get_type() == Variant::OBJECT) {
GDScriptNativeClass *native_class = Object::cast_to<GDScriptNativeClass>(constant);
tokenizer->advance();
if (native_class && ClassDB::is_parent_class(native_class->get_name(), "Resource")) {
current_export.type = Variant::OBJECT;
current_export.hint = PROPERTY_HINT_RESOURCE_TYPE;
current_export.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE;
current_export.hint_string = native_class->get_name();
} else {
current_export = PropertyInfo();
_set_error("Export hint not a resource type.");
}
} else if (constant.get_type() == Variant::DICTIONARY) {
// Enumeration
bool is_flags = false;
if (tokenizer->get_token() == GDScriptTokenizer::TK_COMMA) {
tokenizer->advance();
if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "FLAGS") {
is_flags = true;
tokenizer->advance();
} else {
current_export = PropertyInfo();
_set_error("Expected 'FLAGS' after comma.");
}
}
current_export.type = Variant::INT;
current_export.hint = is_flags ? PROPERTY_HINT_FLAGS : PROPERTY_HINT_ENUM;
Dictionary enum_values = constant;
List<Variant> keys;
enum_values.get_key_list(&keys);
bool first = true;
for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
if (enum_values[E->get()].get_type() == Variant::INT) {
if (!first)
current_export.hint_string += ",";
else
first = false;
current_export.hint_string += E->get().operator String().camelcase_to_underscore(true).capitalize().xml_escape();
if (!is_flags) {
current_export.hint_string += ":";
current_export.hint_string += enum_values[E->get()].operator String().xml_escape();
}
}
}
} else {
current_export = PropertyInfo();
_set_error("Expected type for export.");
return;
}
}
if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) {