blob: 1f46a531a8e50a73e08faaa609149ccdafd02b53 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/*
* 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/DeclarativeEnvironment.h>
#include <LibJS/Runtime/ErrorTypes.h>
#include <LibJS/Runtime/Exception.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/MarkedValueList.h>
#include <LibJS/Runtime/Realm.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);
auto* global_object = static_cast<GlobalObject*>(interpreter->heap().allocate_without_global_object<GlobalObjectType>(forward<Args>(args)...));
auto* realm = Realm::create(vm);
realm->set_global_object(*global_object, global_object);
interpreter->m_global_object = make_handle(global_object);
interpreter->m_realm = make_handle(realm);
static_cast<GlobalObjectType*>(global_object)->initialize_global_object();
return interpreter;
}
static NonnullOwnPtr<Interpreter> create_with_existing_realm(Realm&);
~Interpreter();
void run(GlobalObject&, const Program&);
GlobalObject& global_object();
const GlobalObject& global_object() const;
Realm& realm();
Realm const& realm() 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(); }
Environment* lexical_environment() { return vm().lexical_environment(); }
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; }
private:
explicit Interpreter(VM&);
ExecutingASTNodeChain* m_ast_node_chain { nullptr };
NonnullRefPtr<VM> m_vm;
Handle<GlobalObject> m_global_object;
Handle<Realm> m_realm;
};
}
|
