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LibJS: Implement generator functions (only in bytecode mode)

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Ali Mohammad Pur 2021-06-11 01:38:30 +04:30 • committed by Andreas Kling
parent c53a86a3fe
commit 3234697eca
21 changed files with 407 additions and 34 deletions
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18
Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
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@ -13,7 +13,9 @@
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GeneratorObject.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/NativeFunction.h>
#include <LibJS/Runtime/ScriptFunction.h>
#include <LibJS/Runtime/Value.h>
@ -31,18 +33,19 @@ static ScriptFunction* typed_this(VM& vm, GlobalObject& global_object)
return static_cast<ScriptFunction*>(this_object);
}
ScriptFunction* ScriptFunction::create(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, ScopeObject* parent_scope, bool is_strict, bool is_arrow_function)
ScriptFunction* ScriptFunction::create(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, ScopeObject* parent_scope, bool is_generator, bool is_strict, bool is_arrow_function)
{
return global_object.heap().allocate<ScriptFunction>(global_object, global_object, name, body, move(parameters), m_function_length, parent_scope, *global_object.function_prototype(), is_strict, is_arrow_function);
return global_object.heap().allocate<ScriptFunction>(global_object, global_object, name, body, move(parameters), m_function_length, parent_scope, *global_object.function_prototype(), is_generator, is_strict, is_arrow_function);
}
ScriptFunction::ScriptFunction(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, ScopeObject* parent_scope, Object& prototype, bool is_strict, bool is_arrow_function)
ScriptFunction::ScriptFunction(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, ScopeObject* parent_scope, Object& prototype, bool is_generator, bool is_strict, bool is_arrow_function)
: Function(prototype, is_arrow_function ? vm().this_value(global_object) : Value(), {})
, m_name(name)
, m_body(body)
, m_parameters(move(parameters))
, m_parent_scope(parent_scope)
, m_function_length(m_function_length)
, m_is_generator(is_generator)
, m_is_strict(is_strict)
, m_is_arrow_function(is_arrow_function)
{
@ -152,15 +155,20 @@ Value ScriptFunction::execute_function_body()
if (bytecode_interpreter) {
prepare_arguments();
if (!m_bytecode_executable.has_value()) {
m_bytecode_executable = Bytecode::Generator::generate(m_body);
m_bytecode_executable = Bytecode::Generator::generate(m_body, m_is_generator);
if constexpr (JS_BYTECODE_DEBUG) {
dbgln("Compiled Bytecode::Block for function '{}':", m_name);
for (auto& block : m_bytecode_executable->basic_blocks)
block.dump(*m_bytecode_executable);
}
}
return bytecode_interpreter->run(*m_bytecode_executable);
auto result = bytecode_interpreter->run(*m_bytecode_executable);
if (!m_is_generator)
return result;
return GeneratorObject::create(global_object(), result, this, vm.call_frame().scope, bytecode_interpreter->snapshot_frame());
} else {
VERIFY(!m_is_generator);
OwnPtr<Interpreter> local_interpreter;
ast_interpreter = vm.interpreter_if_exists();