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LibJS/Bytecode: Set "home object" of functions within object expression

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We manage this by having a stack of home objects in Generator, and then
adding an optional home object parameter to the NewFunction instruction.
This commit is contained in:
Andreas Kling
2023-06-16 10:25:05 +02:00
parent a33af174b2
commit c9bd324369
5 changed files with 45 additions and 4 deletions
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6
Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
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@@ -876,6 +876,8 @@ Bytecode::CodeGenerationErrorOr<void> ObjectExpression::generate_bytecode(Byteco
auto object_reg = generator.allocate_register();
generator.emit<Bytecode::Op::Store>(object_reg);
generator.push_home_object(object_reg);
for (auto& property : m_properties) {
Bytecode::Op::PropertyKind property_kind;
switch (property->type()) {
@@ -917,6 +919,8 @@ Bytecode::CodeGenerationErrorOr<void> ObjectExpression::generate_bytecode(Byteco
}
generator.emit<Bytecode::Op::Load>(object_reg);
generator.pop_home_object();
return {};
}
@@ -996,7 +1000,7 @@ Bytecode::CodeGenerationErrorOr<void> FunctionExpression::generate_bytecode(Byte
generator.emit<Bytecode::Op::CreateVariable>(*name_identifier, Bytecode::Op::EnvironmentMode::Lexical, true);
}
generator.emit<Bytecode::Op::NewFunction>(*this);
generator.emit_new_function(*this);
if (has_name) {
generator.emit<Bytecode::Op::SetVariable>(*name_identifier, Bytecode::Op::SetVariable::InitializationMode::Initialize, Bytecode::Op::EnvironmentMode::Lexical);