1 files changed, 50 insertions, 2 deletions

diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index f2aafe9f0c..103269f0f5 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -642,6 +642,53 @@ void GDScriptParser::parse_program() {
 	clear_unused_annotations();
 }
 
+GDScriptParser::ClassNode *GDScriptParser::find_class(const String &p_qualified_name) const {
+	String first = p_qualified_name.get_slice("::", 0);
+
+	Vector<String> class_names;
+	GDScriptParser::ClassNode *result = nullptr;
+	// Empty initial name means start at the head.
+	if (first.is_empty() || (head->identifier && first == head->identifier->name)) {
+		class_names = p_qualified_name.split("::");
+		result = head;
+	} else if (p_qualified_name.begins_with(script_path)) {
+		// Script path could have a class path separator("::") in it.
+		class_names = p_qualified_name.trim_prefix(script_path).split("::");
+		result = head;
+	} else if (head->has_member(first)) {
+		class_names = p_qualified_name.split("::");
+		GDScriptParser::ClassNode::Member member = head->get_member(first);
+		if (member.type == GDScriptParser::ClassNode::Member::CLASS) {
+			result = member.m_class;
+		}
+	}
+
+	// Starts at index 1 because index 0 was handled above.
+	for (int i = 1; result != nullptr && i < class_names.size(); i++) {
+		String current_name = class_names[i];
+		GDScriptParser::ClassNode *next = nullptr;
+		if (result->has_member(current_name)) {
+			GDScriptParser::ClassNode::Member member = result->get_member(current_name);
+			if (member.type == GDScriptParser::ClassNode::Member::CLASS) {
+				next = member.m_class;
+			}
+		}
+		result = next;
+	}
+
+	return result;
+}
+
+bool GDScriptParser::has_class(const GDScriptParser::ClassNode *p_class) const {
+	if (head->fqcn.is_empty() && p_class->fqcn.get_slice("::", 0).is_empty()) {
+		return p_class == head;
+	} else if (p_class->fqcn.begins_with(head->fqcn)) {
+		return find_class(p_class->fqcn.trim_prefix(head->fqcn)) == p_class;
+	}
+
+	return false;
+}
+
 GDScriptParser::ClassNode *GDScriptParser::parse_class() {
 	ClassNode *n_class = alloc_node<ClassNode>();
 
@@ -2240,7 +2287,7 @@ GDScriptParser::IdentifierNode *GDScriptParser::parse_identifier() {
 
 GDScriptParser::ExpressionNode *GDScriptParser::parse_identifier(ExpressionNode *p_previous_operand, bool p_can_assign) {
 	if (!previous.is_identifier()) {
-		ERR_FAIL_V_MSG(nullptr, "Parser bug: parsing literal node without literal token.");
+		ERR_FAIL_V_MSG(nullptr, "Parser bug: parsing identifier node without identifier token.");
 	}
 	IdentifierNode *identifier = alloc_node<IdentifierNode>();
 	complete_extents(identifier);
@@ -4042,11 +4089,12 @@ String GDScriptParser::DataType::to_string() const {
 		}
 		case ENUM:
 			return enum_type.operator String() + " (enum)";
+		case RESOLVING:
 		case UNRESOLVED:
 			return "<unresolved type>";
 	}
 
-	ERR_FAIL_V_MSG("<unresolved type", "Kind set outside the enum range.");
+	ERR_FAIL_V_MSG("<unresolved type>", "Kind set outside the enum range.");
 }
 
 static Variant::Type _variant_type_to_typed_array_element_type(Variant::Type p_type) {