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Check for GDScript member and class naming conflicts in a variety of conditions.

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This commit is contained in:
SaracenOne 2021-08-24 17:49:03 +01:00
parent a160a95ea6
commit 84852585b9
3 changed files with 97 additions and 23 deletions
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85
modules/gdscript/gdscript_analyzer.cpp
View file

@ -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 = &current_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;

6
modules/gdscript/gdscript_analyzer.h
View file

@ -44,6 +44,12 @@ class GDScriptAnalyzer {
const GDScriptParser::EnumNode *current_enum = nullptr;
List<const GDScriptParser::LambdaNode *> 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);

29
modules/gdscript/gdscript_compiler.cpp
View file

@ -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<GDScriptNativeClass> 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<StringName> parameters_names;
parameters_names.resize(signal->parameters.size());
for (int j = 0; j < signal->parameters.size(); j++) {