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GDScript: Use analyzer data to decide assignment conversion 

Since there might be tricky cases in the analyzer (in the case of unsafe
lines) which would need to be properly checked again. Instead, this
splits the code generator in two functions and use information set by
the analyzer to tell which function to use, without a need to re-check.
This commit is contained in:
George Marques 2021-05-26 14:05:31 -03:00
parent 313e1f62bb
commit c7459e3855
No known key found for this signature in database
GPG Key ID: 046BD46A3201E43D
6 changed files with 74 additions and 51 deletions
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9
modules/gdscript/gdscript_analyzer.cpp
View File

@ -543,6 +543,7 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas
} else {
// TODO: Add warning.
mark_node_unsafe(member.variable->initializer);
member.variable->use_conversion_assign = true;
}
} else if (datatype.builtin_type == Variant::INT && member.variable->initializer->get_datatype().builtin_type == Variant::FLOAT) {
#ifdef DEBUG_ENABLED
@ -552,6 +553,7 @@ void GDScriptAnalyzer::resolve_class_interface(GDScriptParser::ClassNode *p_clas
if (member.variable->initializer->get_datatype().is_variant()) {
// TODO: Warn unsafe assign.
mark_node_unsafe(member.variable->initializer);
member.variable->use_conversion_assign = true;
}
}
} else if (member.variable->infer_datatype) {
@ -1145,6 +1147,7 @@ void GDScriptAnalyzer::resolve_variable(GDScriptParser::VariableNode *p_variable
} else {
// TODO: Add warning.
mark_node_unsafe(p_variable->initializer);
p_variable->use_conversion_assign = true;
}
#ifdef DEBUG_ENABLED
} else if (type.builtin_type == Variant::INT && p_variable->initializer->get_datatype().builtin_type == Variant::FLOAT) {
@ -1154,6 +1157,7 @@ void GDScriptAnalyzer::resolve_variable(GDScriptParser::VariableNode *p_variable
if (p_variable->initializer->get_datatype().is_variant()) {
// TODO: Warn unsafe assign.
mark_node_unsafe(p_variable->initializer);
p_variable->use_conversion_assign = true;
}
}
} else if (p_variable->infer_datatype) {
@ -1608,10 +1612,12 @@ void GDScriptAnalyzer::reduce_assignment(GDScriptParser::AssignmentNode *p_assig
} else {
// TODO: Add warning.
mark_node_unsafe(p_assignment);
p_assignment->use_conversion_assign = true;
}
} else {
// TODO: Warning in this case.
mark_node_unsafe(p_assignment);
p_assignment->use_conversion_assign = true;
}
}
} else {
@ -1621,6 +1627,9 @@ void GDScriptAnalyzer::reduce_assignment(GDScriptParser::AssignmentNode *p_assig
if (assignee_type.has_no_type() || assigned_value_type.is_variant()) {
mark_node_unsafe(p_assignment);
if (assignee_type.is_hard_type()) {
p_assignment->use_conversion_assign = true;
}
}
if (p_assignment->assignee->type == GDScriptParser::Node::IDENTIFIER) {

94
modules/gdscript/gdscript_byte_codegen.cpp
View File

@ -779,63 +779,43 @@ void GDScriptByteCodeGenerator::write_get_member(const Address &p_target, const
append(p_name);
}
void GDScriptByteCodeGenerator::write_assign(const Address &p_target, const Address &p_source) {
if (p_target.type.has_type && !p_source.type.has_type) {
// Typed assignment.
switch (p_target.type.kind) {
case GDScriptDataType::BUILTIN: {
if (p_target.type.builtin_type == Variant::ARRAY && p_target.type.has_container_element_type()) {
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_ARRAY, 2);
append(p_target);
append(p_source);
} else {
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_BUILTIN, 2);
append(p_target);
append(p_source);
append(p_target.type.builtin_type);
}
} break;
case GDScriptDataType::NATIVE: {
int class_idx = GDScriptLanguage::get_singleton()->get_global_map()[p_target.type.native_type];
Variant nc = GDScriptLanguage::get_singleton()->get_global_array()[class_idx];
class_idx = get_constant_pos(nc) | (GDScriptFunction::ADDR_TYPE_CONSTANT << GDScriptFunction::ADDR_BITS);
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_NATIVE, 3);
void GDScriptByteCodeGenerator::write_assign_with_conversion(const Address &p_target, const Address &p_source) {
switch (p_target.type.kind) {
case GDScriptDataType::BUILTIN: {
if (p_target.type.builtin_type == Variant::ARRAY && p_target.type.has_container_element_type()) {
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_ARRAY, 2);
append(p_target);
append(p_source);
append(class_idx);
} break;
case GDScriptDataType::SCRIPT:
case GDScriptDataType::GDSCRIPT: {
Variant script = p_target.type.script_type;
int idx = get_constant_pos(script) | (GDScriptFunction::ADDR_TYPE_CONSTANT << GDScriptFunction::ADDR_BITS);
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_SCRIPT, 3);
append(p_target);
append(p_source);
append(idx);
} break;
default: {
ERR_PRINT("Compiler bug: unresolved assign.");
// Shouldn't get here, but fail-safe to a regular assignment
append(GDScriptFunction::OPCODE_ASSIGN, 2);
} else {
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_BUILTIN, 2);
append(p_target);
append(p_source);
append(p_target.type.builtin_type);
}
}
} else {
if (p_target.type.kind == GDScriptDataType::BUILTIN && p_target.type.builtin_type == Variant::ARRAY && p_target.type.has_container_element_type()) {
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_ARRAY, 2);
} break;
case GDScriptDataType::NATIVE: {
int class_idx = GDScriptLanguage::get_singleton()->get_global_map()[p_target.type.native_type];
Variant nc = GDScriptLanguage::get_singleton()->get_global_array()[class_idx];
class_idx = get_constant_pos(nc) | (GDScriptFunction::ADDR_TYPE_CONSTANT << GDScriptFunction::ADDR_BITS);
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_NATIVE, 3);
append(p_target);
append(p_source);
} else if (p_target.type.kind == GDScriptDataType::BUILTIN && p_source.type.kind == GDScriptDataType::BUILTIN && p_target.type.builtin_type != p_source.type.builtin_type) {
// Need conversion..
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_BUILTIN, 2);
append(class_idx);
} break;
case GDScriptDataType::SCRIPT:
case GDScriptDataType::GDSCRIPT: {
Variant script = p_target.type.script_type;
int idx = get_constant_pos(script) | (GDScriptFunction::ADDR_TYPE_CONSTANT << GDScriptFunction::ADDR_BITS);
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_SCRIPT, 3);
append(p_target);
append(p_source);
append(p_target.type.builtin_type);
} else {
// Either untyped assignment or already type-checked by the parser
append(idx);
} break;
default: {
ERR_PRINT("Compiler bug: unresolved assign.");
// Shouldn't get here, but fail-safe to a regular assignment
append(GDScriptFunction::OPCODE_ASSIGN, 2);
append(p_target);
append(p_source);
@ -843,6 +823,24 @@ void GDScriptByteCodeGenerator::write_assign(const Address &p_target, const Addr
}
}
void GDScriptByteCodeGenerator::write_assign(const Address &p_target, const Address &p_source) {
if (p_target.type.kind == GDScriptDataType::BUILTIN && p_target.type.builtin_type == Variant::ARRAY && p_target.type.has_container_element_type()) {
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_ARRAY, 2);
append(p_target);
append(p_source);
} else if (p_target.type.kind == GDScriptDataType::BUILTIN && p_source.type.kind == GDScriptDataType::BUILTIN && p_target.type.builtin_type != p_source.type.builtin_type) {
// Need conversion.
append(GDScriptFunction::OPCODE_ASSIGN_TYPED_BUILTIN, 2);
append(p_target);
append(p_source);
append(p_target.type.builtin_type);
} else {
append(GDScriptFunction::OPCODE_ASSIGN, 2);
append(p_target);
append(p_source);
}
}
void GDScriptByteCodeGenerator::write_assign_true(const Address &p_target) {
append(GDScriptFunction::OPCODE_ASSIGN_TRUE, 1);
append(p_target);

1
modules/gdscript/gdscript_byte_codegen.h
View File

@ -450,6 +450,7 @@ public:
virtual void write_set_member(const Address &p_value, const StringName &p_name) override;
virtual void write_get_member(const Address &p_target, const StringName &p_name) override;
virtual void write_assign(const Address &p_target, const Address &p_source) override;
virtual void write_assign_with_conversion(const Address &p_target, const Address &p_source) override;
virtual void write_assign_true(const Address &p_target) override;
virtual void write_assign_false(const Address &p_target) override;
virtual void write_assign_default_parameter(const Address &p_dst, const Address &p_src) override;

1
modules/gdscript/gdscript_codegen.h
View File

@ -111,6 +111,7 @@ public:
virtual void write_set_member(const Address &p_value, const StringName &p_name) = 0;
virtual void write_get_member(const Address &p_target, const StringName &p_name) = 0;
virtual void write_assign(const Address &p_target, const Address &p_source) = 0;
virtual void write_assign_with_conversion(const Address &p_target, const Address &p_source) = 0;
virtual void write_assign_true(const Address &p_target) = 0;
virtual void write_assign_false(const Address &p_target) = 0;
virtual void write_assign_default_parameter(const Address &dst, const Address &src) = 0;

18
modules/gdscript/gdscript_compiler.cpp
View File

@ -1084,7 +1084,11 @@ GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &code
gen->write_call(GDScriptCodeGenerator::Address(), GDScriptCodeGenerator::Address(GDScriptCodeGenerator::Address::SELF), setter_function, args);
} else {
// Just assign.
gen->write_assign(target, op_result);
if (assignment->use_conversion_assign) {
gen->write_assign_with_conversion(target, op_result);
} else {
gen->write_assign(target, op_result);
}
}
if (op_result.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
@ -1792,7 +1796,11 @@ Error GDScriptCompiler::_parse_block(CodeGen &codegen, const GDScriptParser::Sui
if (error) {
return error;
}
gen->write_assign(local, src_address);
if (lv->use_conversion_assign) {
gen->write_assign_with_conversion(local, src_address);
} else {
gen->write_assign(local, src_address);
}
if (src_address.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
codegen.generator->pop_temporary();
}
@ -1930,7 +1938,11 @@ GDScriptFunction *GDScriptCompiler::_parse_function(Error &r_error, GDScript *p_
return nullptr;
}
codegen.generator->write_assign(dst_address, src_address);
if (field->use_conversion_assign) {
codegen.generator->write_assign_with_conversion(dst_address, src_address);
} else {
codegen.generator->write_assign(dst_address, src_address);
}
if (src_address.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
codegen.generator->pop_temporary();
}

2
modules/gdscript/gdscript_parser.h
View File

@ -370,6 +370,7 @@ public:
Variant::Operator variant_op = Variant::OP_MAX;
ExpressionNode *assignee = nullptr;
ExpressionNode *assigned_value = nullptr;
bool use_conversion_assign = false;
AssignmentNode() {
type = ASSIGNMENT;
@ -1119,6 +1120,7 @@ public:
MultiplayerAPI::RPCMode rpc_mode = MultiplayerAPI::RPC_MODE_DISABLED;
int assignments = 0;
int usages = 0;
bool use_conversion_assign = false;
#ifdef TOOLS_ENABLED
String doc_description;
#endif // TOOLS_ENABLED