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LibJS: Add basic support for module code with top-level await

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For now, we handle this by creating a synthetic async function to wrap
the top-level module code. This allows us to piggyback on the async
function driver wrapper mechanism.
This commit is contained in:
Andreas Kling 2023-12-06 11:35:40 +01:00
parent 26c21fba8e
commit a2c3db8367
4 changed files with 35 additions and 3 deletions
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6
Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.cpp
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@ -1192,7 +1192,11 @@ Completion ECMAScriptFunctionObject::ordinary_call_evaluate_body()
}
}
auto declaration_result = function_declaration_instantiation();
auto declaration_result = [&]() -> ThrowCompletionOr<void> {
if (is_module_wrapper())
return {};
return function_declaration_instantiation();
}();
if (m_kind == FunctionKind::Normal || m_kind == FunctionKind::Generator || m_kind == FunctionKind::AsyncGenerator) {
if (declaration_result.is_error())

4
Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.h
View file

@ -49,6 +49,9 @@ public:
void make_method(Object& home_object);
[[nodiscard]] bool is_module_wrapper() const { return m_is_module_wrapper; }
void set_is_module_wrapper(bool b) { m_is_module_wrapper = b; }
Statement const& ecmascript_code() const { return m_ecmascript_code; }
Vector<FunctionParameter> const& formal_parameters() const { return m_formal_parameters; }
@ -153,6 +156,7 @@ private:
HashTable<DeprecatedFlyString> m_parameter_names;
Vector<FunctionDeclaration const&> m_functions_to_initialize;
bool m_arguments_object_needed { false };
bool m_is_module_wrapper { false };
Vector<VariableNameToInitialize> m_var_names_to_initialize_binding;
Vector<DeprecatedFlyString> m_function_names_to_initialize_binding;