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https://github.com/RGBCube/serenity
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44221756ab
"Records" in the spec are basically C++ classes, so let's drop this mouthful of a suffix.
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/HashMap.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <AK/Weakable.h>
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#include <LibJS/AST.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/DeferGC.h>
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Runtime/DeclarativeEnvironment.h>
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#include <LibJS/Runtime/ErrorTypes.h>
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#include <LibJS/Runtime/Exception.h>
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#include <LibJS/Runtime/MarkedValueList.h>
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#include <LibJS/Runtime/VM.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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struct ExecutingASTNodeChain {
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ExecutingASTNodeChain* previous { nullptr };
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const ASTNode& node;
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};
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class Interpreter : public Weakable<Interpreter> {
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public:
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template<typename GlobalObjectType, typename... Args>
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static NonnullOwnPtr<Interpreter> create(VM& vm, Args&&... args)
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{
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DeferGC defer_gc(vm.heap());
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auto interpreter = adopt_own(*new Interpreter(vm));
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VM::InterpreterExecutionScope scope(*interpreter);
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interpreter->m_global_object = make_handle(static_cast<Object*>(interpreter->heap().allocate_without_global_object<GlobalObjectType>(forward<Args>(args)...)));
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static_cast<GlobalObjectType*>(interpreter->m_global_object.cell())->initialize_global_object();
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return interpreter;
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}
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static NonnullOwnPtr<Interpreter> create_with_existing_global_object(GlobalObject&);
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~Interpreter();
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void run(GlobalObject&, const Program&);
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GlobalObject& global_object();
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const GlobalObject& global_object() const;
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ALWAYS_INLINE VM& vm() { return *m_vm; }
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ALWAYS_INLINE const VM& vm() const { return *m_vm; }
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ALWAYS_INLINE Heap& heap() { return vm().heap(); }
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ALWAYS_INLINE Exception* exception() { return vm().exception(); }
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Environment* lexical_environment() { return vm().lexical_environment(); }
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FunctionEnvironment* current_function_environment();
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void enter_scope(const ScopeNode&, ScopeType, GlobalObject&);
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void exit_scope(const ScopeNode&);
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void push_ast_node(ExecutingASTNodeChain& chain_node)
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{
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chain_node.previous = m_ast_node_chain;
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m_ast_node_chain = &chain_node;
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}
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void pop_ast_node()
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{
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VERIFY(m_ast_node_chain);
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m_ast_node_chain = m_ast_node_chain->previous;
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}
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const ASTNode* current_node() const { return m_ast_node_chain ? &m_ast_node_chain->node : nullptr; }
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ExecutingASTNodeChain* executing_ast_node_chain() { return m_ast_node_chain; }
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const ExecutingASTNodeChain* executing_ast_node_chain() const { return m_ast_node_chain; }
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Value execute_statement(GlobalObject&, const Statement&, ScopeType = ScopeType::Block);
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private:
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explicit Interpreter(VM&);
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void push_scope(ScopeFrame frame);
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Vector<ScopeFrame> m_scope_stack;
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ExecutingASTNodeChain* m_ast_node_chain { nullptr };
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NonnullRefPtr<VM> m_vm;
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Handle<Object> m_global_object;
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};
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}
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