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LibJS/Bytecode: Add some basic codegen for ExportStatement

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This is by no means complete, but at least a bunch of test-js and
test262 tests start working. :^)
This commit is contained in:
Andreas Kling 2023-06-24 16:07:43 +02:00
parent 5d79431859
commit 06ac768c8b
2 changed files with 28 additions and 0 deletions
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2
Userland/Libraries/LibJS/AST.h
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@ -470,6 +470,8 @@ public:
virtual void dump(int indent) const override; virtual void dump(int indent) const override;
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
bool has_export(DeprecatedFlyString const& export_name) const; bool has_export(DeprecatedFlyString const& export_name) const;
bool has_statement() const { return m_statement; } bool has_statement() const { return m_statement; }

26
Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
View file

@ -2743,4 +2743,30 @@ Bytecode::CodeGenerationErrorOr<void> ImportCall::generate_bytecode(Bytecode::Ge
return {}; return {};
} }
Bytecode::CodeGenerationErrorOr<void> ExportStatement::generate_bytecode(Bytecode::Generator& generator) const
{
if (!is_default_export()) {
if (m_statement) {
return m_statement->generate_bytecode(generator);
}
return {};
}
VERIFY(m_statement);
if (is<FunctionDeclaration>(*m_statement) || is<ClassDeclaration>(*m_statement)) {
return m_statement->generate_bytecode(generator);
}
if (is<ClassExpression>(*m_statement)) {
TODO();
}
// ExportDeclaration : export default AssignmentExpression ;
VERIFY(is<Expression>(*m_statement));
TRY(generator.emit_named_evaluation_if_anonymous_function(static_cast<Expression const&>(*m_statement), DeprecatedFlyString("default"sv)));
generator.emit<Bytecode::Op::SetVariable>(generator.intern_identifier("default"sv));
return {};
}
} }