From 84852585b96623fef89576898f5c5f4ae173108b Mon Sep 17 00:00:00 2001 From: SaracenOne Date: Tue, 24 Aug 2021 17:49:03 +0100 Subject: [PATCH] Check for GDScript member and class naming conflicts in a variety of conditions. --- modules/gdscript/gdscript_analyzer.cpp | 85 +++++++++++++++++++++++++- modules/gdscript/gdscript_analyzer.h | 6 ++ modules/gdscript/gdscript_compiler.cpp | 29 +++------ 3 files changed, 97 insertions(+), 23 deletions(-) diff --git a/modules/gdscript/gdscript_analyzer.cpp b/modules/gdscript/gdscript_analyzer.cpp index 6f76ca05dc4..a0cf41d5a32 100644 --- a/modules/gdscript/gdscript_analyzer.cpp +++ b/modules/gdscript/gdscript_analyzer.cpp @@ -132,6 +132,76 @@ static GDScriptParser::DataType make_builtin_meta_type(Variant::Type p_type) { return type; } +bool GDScriptAnalyzer::has_member_name_conflict_in_script_class(const StringName &p_member_name, const GDScriptParser::ClassNode *p_class) { + if (p_class->members_indices.has(p_member_name)) { + int index = p_class->members_indices[p_member_name]; + const GDScriptParser::ClassNode::Member *member = &p_class->members[index]; + + if (member->type == GDScriptParser::ClassNode::Member::VARIABLE || + member->type == GDScriptParser::ClassNode::Member::CONSTANT || + member->type == GDScriptParser::ClassNode::Member::ENUM || + member->type == GDScriptParser::ClassNode::Member::ENUM_VALUE || + member->type == GDScriptParser::ClassNode::Member::CLASS || + member->type == GDScriptParser::ClassNode::Member::SIGNAL) { + return true; + } + } + + return false; +} + +bool GDScriptAnalyzer::has_member_name_conflict_in_native_type(const StringName &p_member_name, const StringName &p_native_type_string) { + if (ClassDB::has_signal(p_native_type_string, p_member_name)) { + return true; + } + if (ClassDB::has_property(p_native_type_string, p_member_name)) { + return true; + } + if (ClassDB::has_integer_constant(p_native_type_string, p_member_name)) { + return true; + } + + return false; +} + +Error GDScriptAnalyzer::check_native_member_name_conflict(const StringName &p_member_name, const GDScriptParser::Node *p_member_node, const StringName &p_native_type_string) { + if (has_member_name_conflict_in_native_type(p_member_name, p_native_type_string)) { + push_error(vformat(R"(Member "%s" redefined (original in native class '%s'))", p_member_name, p_native_type_string), p_member_node); + return ERR_PARSE_ERROR; + } + + if (class_exists(p_member_name)) { + push_error(vformat(R"(The class "%s" shadows a native class.)", p_member_name), p_member_node); + return ERR_PARSE_ERROR; + } + + return OK; +} + +Error GDScriptAnalyzer::check_class_member_name_conflict(const GDScriptParser::ClassNode *p_class_node, const StringName &p_member_name, const GDScriptParser::Node *p_member_node) { + const GDScriptParser::DataType *current_data_type = &p_class_node->base_type; + while (current_data_type && current_data_type->kind == GDScriptParser::DataType::Kind::CLASS) { + GDScriptParser::ClassNode *current_class_node = current_data_type->class_type; + if (has_member_name_conflict_in_script_class(p_member_name, current_class_node)) { + push_error(vformat(R"(The member "%s" already exists in a parent class.)", p_member_name), + p_member_node); + return ERR_PARSE_ERROR; + } + current_data_type = ¤t_class_node->base_type; + } + + if (current_data_type && current_data_type->kind == GDScriptParser::DataType::Kind::NATIVE) { + if (current_data_type->native_type != StringName("")) { + return check_native_member_name_conflict( + p_member_name, + p_member_node, + current_data_type->native_type); + } + } + + return OK; +} + Error GDScriptAnalyzer::resolve_inheritance(GDScriptParser::ClassNode *p_class, bool p_recursive) { if (p_class->base_type.is_set()) { // Already resolved @@ -525,6 +595,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas switch (member.type) { case GDScriptParser::ClassNode::Member::VARIABLE: { + check_class_member_name_conflict(p_class, member.variable->identifier->name, member.variable); + GDScriptParser::DataType datatype; datatype.kind = GDScriptParser::DataType::VARIANT; datatype.type_source = GDScriptParser::DataType::UNDETECTED; @@ -598,6 +670,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas } } break; case GDScriptParser::ClassNode::Member::CONSTANT: { + check_class_member_name_conflict(p_class, member.constant->identifier->name, member.constant); + reduce_expression(member.constant->initializer); GDScriptParser::DataType specified_type; @@ -647,6 +721,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas } } break; case GDScriptParser::ClassNode::Member::SIGNAL: { + check_class_member_name_conflict(p_class, member.signal->identifier->name, member.signal); + for (int j = 0; j < member.signal->parameters.size(); j++) { GDScriptParser::DataType signal_type = resolve_datatype(member.signal->parameters[j]->datatype_specifier); signal_type.is_meta_type = false; @@ -666,6 +742,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas } } break; case GDScriptParser::ClassNode::Member::ENUM: { + check_class_member_name_conflict(p_class, member.m_enum->identifier->name, member.m_enum); + GDScriptParser::DataType enum_type; enum_type.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT; enum_type.kind = GDScriptParser::DataType::ENUM; @@ -717,6 +795,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas break; case GDScriptParser::ClassNode::Member::ENUM_VALUE: { if (member.enum_value.custom_value) { + check_class_member_name_conflict(p_class, member.enum_value.identifier->name, member.enum_value.custom_value); + current_enum = member.enum_value.parent_enum; reduce_expression(member.enum_value.custom_value); current_enum = nullptr; @@ -730,6 +810,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas member.enum_value.resolved = true; } } else { + check_class_member_name_conflict(p_class, member.enum_value.identifier->name, member.enum_value.parent_enum); + if (member.enum_value.index > 0) { member.enum_value.value = member.enum_value.parent_enum->values[member.enum_value.index - 1].value + 1; } else { @@ -742,7 +824,8 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas p_class->members.write[i].enum_value = member.enum_value; } break; case GDScriptParser::ClassNode::Member::CLASS: - break; // Done later. + check_class_member_name_conflict(p_class, member.m_class->identifier->name, member.m_class); + break; case GDScriptParser::ClassNode::Member::UNDEFINED: ERR_PRINT("Trying to resolve undefined member."); break; diff --git a/modules/gdscript/gdscript_analyzer.h b/modules/gdscript/gdscript_analyzer.h index 32bf049fa12..2e17e15452b 100644 --- a/modules/gdscript/gdscript_analyzer.h +++ b/modules/gdscript/gdscript_analyzer.h @@ -44,6 +44,12 @@ class GDScriptAnalyzer { const GDScriptParser::EnumNode *current_enum = nullptr; List lambda_stack; + // Tests for detecting invalid overloading of script members + static _FORCE_INLINE_ bool has_member_name_conflict_in_script_class(const StringName &p_name, const GDScriptParser::ClassNode *p_current_class_node); + static _FORCE_INLINE_ bool has_member_name_conflict_in_native_type(const StringName &p_name, const StringName &p_native_type_string); + Error check_native_member_name_conflict(const StringName &p_member_name, const GDScriptParser::Node *p_member_node, const StringName &p_native_type_string); + Error check_class_member_name_conflict(const GDScriptParser::ClassNode *p_class_node, const StringName &p_member_name, const GDScriptParser::Node *p_member_node); + Error resolve_inheritance(GDScriptParser::ClassNode *p_class, bool p_recursive = true); GDScriptParser::DataType resolve_datatype(GDScriptParser::TypeNode *p_type); diff --git a/modules/gdscript/gdscript_compiler.cpp b/modules/gdscript/gdscript_compiler.cpp index ddf4f281b4d..e5cbcc545f0 100644 --- a/modules/gdscript/gdscript_compiler.cpp +++ b/modules/gdscript/gdscript_compiler.cpp @@ -2186,6 +2186,13 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, const GDScriptPar p_script->tool = parser->is_tool(); p_script->name = p_class->identifier ? p_class->identifier->name : ""; + if (p_script->name != "") { + if (ClassDB::class_exists(p_script->name) && ClassDB::is_class_exposed(p_script->name)) { + _set_error("The class '" + p_script->name + "' shadows a native class", p_class); + return ERR_ALREADY_EXISTS; + } + } + Ref native; GDScriptDataType base_type = _gdtype_from_datatype(p_class->base_type); @@ -2337,28 +2344,6 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, const GDScriptPar const GDScriptParser::SignalNode *signal = member.signal; StringName name = signal->identifier->name; - GDScript *c = p_script; - - while (c) { - if (c->_signals.has(name)) { - _set_error("Signal '" + name + "' redefined (in current or parent class)", p_class); - return ERR_ALREADY_EXISTS; - } - - if (c->base.is_valid()) { - c = c->base.ptr(); - } else { - c = nullptr; - } - } - - if (native.is_valid()) { - if (ClassDB::has_signal(native->get_name(), name)) { - _set_error("Signal '" + name + "' redefined (original in native class '" + String(native->get_name()) + "')", p_class); - return ERR_ALREADY_EXISTS; - } - } - Vector parameters_names; parameters_names.resize(signal->parameters.size()); for (int j = 0; j < signal->parameters.size(); j++) {