mirrors/ladybird
0
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-07-29 12:19:54 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

LibJS: Use local variables for function declarations when possible

Browse source 
Previously, the usage of local variables was limited for all function
declarations. This change relaxes the restriction and only prohibits
locals for hoistable annexB declarations.
This commit is contained in:
Aliaksandr Kalenik 2023-07-08 19:31:41 +02:00 • committed by Andreas Kling
commit 8b6450842e
Notes: sideshowbarker 2024-07-16 23:57:20 +09:00
4 changed files with 36 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.cpp
View file

@ -616,7 +616,11 @@ ThrowCompletionOr<void> ECMAScriptFunctionObject::function_declaration_instantia
auto private_environment = callee_context.private_environment;
for (auto& declaration : functions_to_initialize) {
auto function = ECMAScriptFunctionObject::create(realm, declaration.name(), declaration.source_text(), declaration.body(), declaration.parameters(), declaration.function_length(), declaration.local_variables_names(), lex_environment, private_environment, declaration.kind(), declaration.is_strict_mode(), declaration.might_need_arguments_object(), declaration.contains_direct_call_to_eval());
MUST(var_environment->set_mutable_binding(vm, declaration.name(), function, false));
if ((vm.bytecode_interpreter_if_exists() || kind() == FunctionKind::Generator) && declaration.name_identifier()->is_local()) {
callee_context.local_variables[declaration.name_identifier()->local_variable_index()] = function;
} else {
MUST(var_environment->set_mutable_binding(vm, declaration.name(), function, false));
}
}
if (is<DeclarativeEnvironment>(*lex_environment))