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- /*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #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 {
- 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;
- VM& vm() { return *m_vm; }
- const VM& vm() const { return *m_vm; }
- Heap& heap() { return vm().heap(); }
- 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 enter_node(const ASTNode&);
- void exit_node(const ASTNode&);
- Value execute_statement(GlobalObject&, const Statement&, ScopeType = ScopeType::Block);
- private:
- explicit Interpreter(VM&);
- void push_scope(ScopeFrame frame);
- Vector<ScopeFrame> m_scope_stack;
- NonnullRefPtr<VM> m_vm;
- Handle<Object> m_global_object;
- };
- }
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