mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/FlyString.h>
|
|
#include <AK/HashMap.h>
|
|
#include <AK/String.h>
|
|
#include <AK/Vector.h>
|
|
#include <AK/Weakable.h>
|
|
#include <LibJS/AST.h>
|
|
#include <LibJS/Forward.h>
|
|
#include <LibJS/Heap/DeferGC.h>
|
|
#include <LibJS/Heap/Heap.h>
|
|
#include <LibJS/Runtime/ErrorTypes.h>
|
|
#include <LibJS/Runtime/Exception.h>
|
|
#include <LibJS/Runtime/LexicalEnvironment.h>
|
|
#include <LibJS/Runtime/MarkedValueList.h>
|
|
#include <LibJS/Runtime/VM.h>
|
|
#include <LibJS/Runtime/Value.h>
|
|
|
|
namespace JS {
|
|
|
|
struct ExecutingASTNodeChain {
|
|
ExecutingASTNodeChain* previous { nullptr };
|
|
const ASTNode& node;
|
|
};
|
|
|
|
class Interpreter : public Weakable<Interpreter> {
|
|
public:
|
|
template<typename GlobalObjectType, typename... Args>
|
|
static NonnullOwnPtr<Interpreter> create(VM& vm, Args&&... args)
|
|
{
|
|
DeferGC defer_gc(vm.heap());
|
|
auto interpreter = adopt_own(*new Interpreter(vm));
|
|
VM::InterpreterExecutionScope scope(*interpreter);
|
|
interpreter->m_global_object = make_handle(static_cast<Object*>(interpreter->heap().allocate_without_global_object<GlobalObjectType>(forward<Args>(args)...)));
|
|
static_cast<GlobalObjectType*>(interpreter->m_global_object.cell())->initialize_global_object();
|
|
return interpreter;
|
|
}
|
|
|
|
static NonnullOwnPtr<Interpreter> create_with_existing_global_object(GlobalObject&);
|
|
|
|
~Interpreter();
|
|
|
|
void run(GlobalObject&, const Program&);
|
|
|
|
GlobalObject& global_object();
|
|
const GlobalObject& global_object() const;
|
|
|
|
ALWAYS_INLINE VM& vm() { return *m_vm; }
|
|
ALWAYS_INLINE const VM& vm() const { return *m_vm; }
|
|
ALWAYS_INLINE Heap& heap() { return vm().heap(); }
|
|
ALWAYS_INLINE Exception* exception() { return vm().exception(); }
|
|
|
|
ScopeObject* current_scope() { return vm().current_scope(); }
|
|
LexicalEnvironment* current_environment();
|
|
|
|
void enter_scope(const ScopeNode&, ScopeType, GlobalObject&);
|
|
void exit_scope(const ScopeNode&);
|
|
|
|
void push_ast_node(ExecutingASTNodeChain& chain_node)
|
|
{
|
|
chain_node.previous = m_ast_node_chain;
|
|
m_ast_node_chain = &chain_node;
|
|
}
|
|
|
|
void pop_ast_node()
|
|
{
|
|
VERIFY(m_ast_node_chain);
|
|
m_ast_node_chain = m_ast_node_chain->previous;
|
|
}
|
|
|
|
const ASTNode* current_node() const { return m_ast_node_chain ? &m_ast_node_chain->node : nullptr; }
|
|
ExecutingASTNodeChain* executing_ast_node_chain() { return m_ast_node_chain; }
|
|
const ExecutingASTNodeChain* executing_ast_node_chain() const { return m_ast_node_chain; }
|
|
|
|
Value execute_statement(GlobalObject&, const Statement&, ScopeType = ScopeType::Block);
|
|
|
|
private:
|
|
explicit Interpreter(VM&);
|
|
|
|
void push_scope(ScopeFrame frame);
|
|
|
|
Vector<ScopeFrame> m_scope_stack;
|
|
ExecutingASTNodeChain* m_ast_node_chain { nullptr };
|
|
|
|
NonnullRefPtr<VM> m_vm;
|
|
|
|
Handle<Object> m_global_object;
|
|
};
|
|
|
|
}
|