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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* Copyright (c) 2020-2023, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Concepts.h>
#include <AK/Forward.h>
#include <LibCrypto/Forward.h>
#include <LibJS/Forward.h>
#include <LibJS/Heap/MarkedVector.h>
#include <LibJS/Runtime/CanonicalIndex.h>
#include <LibJS/Runtime/FunctionObject.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/PrivateEnvironment.h>
#include <LibJS/Runtime/Value.h>
namespace JS {
NonnullGCPtr<DeclarativeEnvironment> new_declarative_environment(Environment&);
NonnullGCPtr<ObjectEnvironment> new_object_environment(Object&, bool is_with_environment, Environment*);
NonnullGCPtr<FunctionEnvironment> new_function_environment(ECMAScriptFunctionObject&, Object* new_target);
NonnullGCPtr<PrivateEnvironment> new_private_environment(VM& vm, PrivateEnvironment* outer);
NonnullGCPtr<Environment> get_this_environment(VM&);
bool can_be_held_weakly(Value);
Object* get_super_constructor(VM&);
ThrowCompletionOr<Reference> make_super_property_reference(VM&, Value actual_this, PropertyKey const&, bool strict);
ThrowCompletionOr<Value> require_object_coercible(VM&, Value);
ThrowCompletionOr<Value> call_impl(VM&, Value function, Value this_value, Optional<MarkedVector<Value>> = {});
ThrowCompletionOr<Value> call_impl(VM&, FunctionObject& function, Value this_value, Optional<MarkedVector<Value>> = {});
ThrowCompletionOr<NonnullGCPtr<Object>> construct_impl(VM&, FunctionObject&, Optional<MarkedVector<Value>> = {}, FunctionObject* new_target = nullptr);
ThrowCompletionOr<size_t> length_of_array_like(VM&, Object const&);
ThrowCompletionOr<MarkedVector<Value>> create_list_from_array_like(VM&, Value, Function<ThrowCompletionOr<void>(Value)> = {});
ThrowCompletionOr<FunctionObject*> species_constructor(VM&, Object const&, FunctionObject& default_constructor);
ThrowCompletionOr<Realm*> get_function_realm(VM&, FunctionObject const&);
ThrowCompletionOr<void> initialize_bound_name(VM&, DeprecatedFlyString const&, Value, Environment*);
bool is_compatible_property_descriptor(bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
bool validate_and_apply_property_descriptor(Object*, PropertyKey const&, bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
ThrowCompletionOr<Object*> get_prototype_from_constructor(VM&, FunctionObject const& constructor, NonnullGCPtr<Object> (Intrinsics::*intrinsic_default_prototype)());
Object* create_unmapped_arguments_object(VM&, Span<Value> arguments);
Object* create_mapped_arguments_object(VM&, FunctionObject&, Vector<FunctionParameter> const&, Span<Value> arguments, Environment&);
struct DisposableResource {
Value resource_value;
NonnullGCPtr<FunctionObject> dispose_method;
};
ThrowCompletionOr<void> add_disposable_resource(VM&, Vector<DisposableResource>& disposable, Value, Environment::InitializeBindingHint, FunctionObject* = nullptr);
ThrowCompletionOr<DisposableResource> create_disposable_resource(VM&, Value, Environment::InitializeBindingHint, FunctionObject* method = nullptr);
ThrowCompletionOr<GCPtr<FunctionObject>> get_dispose_method(VM&, Value, Environment::InitializeBindingHint);
Completion dispose(VM& vm, Value, NonnullGCPtr<FunctionObject> method);
Completion dispose_resources(VM& vm, Vector<DisposableResource> const& disposable, Completion completion);
Completion dispose_resources(VM& vm, GCPtr<DeclarativeEnvironment> disposable, Completion completion);
enum class CanonicalIndexMode {
DetectNumericRoundtrip,
IgnoreNumericRoundtrip,
};
ThrowCompletionOr<CanonicalIndex> canonical_numeric_index_string(VM&, PropertyKey const&, CanonicalIndexMode needs_numeric);
ThrowCompletionOr<String> get_substitution(VM&, Utf16View const& matched, Utf16View const& str, size_t position, Span<Value> captures, Value named_captures, Value replacement);
enum class CallerMode {
Strict,
NonStrict
};
enum class EvalMode {
Direct,
Indirect
};
ThrowCompletionOr<Value> perform_eval(VM&, Value, CallerMode, EvalMode);
ThrowCompletionOr<void> eval_declaration_instantiation(VM& vm, Program const& program, Environment* variable_environment, Environment* lexical_environment, PrivateEnvironment* private_environment, bool strict);
// 7.3.14 Call ( F, V [ , argumentsList ] ), https://tc39.es/ecma262/#sec-call
ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, MarkedVector<Value> arguments_list)
{
return call_impl(vm, function, this_value, move(arguments_list));
}
ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, Optional<MarkedVector<Value>> arguments_list)
{
return call_impl(vm, function, this_value, move(arguments_list));
}
template<typename... Args>
ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, Args&&... args)
{
if constexpr (sizeof...(Args) > 0) {
MarkedVector<Value> arguments_list { vm.heap() };
(..., arguments_list.append(forward<Args>(args)));
return call_impl(vm, function, this_value, move(arguments_list));
}
return call_impl(vm, function, this_value);
}
ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, MarkedVector<Value> arguments_list)
{
return call_impl(vm, function, this_value, move(arguments_list));
}
ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, Optional<MarkedVector<Value>> arguments_list)
{
return call_impl(vm, function, this_value, move(arguments_list));
}
template<typename... Args>
ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, Args&&... args)
{
if constexpr (sizeof...(Args) > 0) {
MarkedVector<Value> arguments_list { vm.heap() };
(..., arguments_list.append(forward<Args>(args)));
return call_impl(vm, function, this_value, move(arguments_list));
}
return call_impl(vm, function, this_value);
}
// 7.3.15 Construct ( F [ , argumentsList [ , newTarget ] ] ), https://tc39.es/ecma262/#sec-construct
template<typename... Args>
ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, Args&&... args)
{
if constexpr (sizeof...(Args) > 0) {
MarkedVector<Value> arguments_list { vm.heap() };
(..., arguments_list.append(forward<Args>(args)));
return construct_impl(vm, function, move(arguments_list));
}
return construct_impl(vm, function);
}
ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, MarkedVector<Value> arguments_list, FunctionObject* new_target = nullptr)
{
return construct_impl(vm, function, move(arguments_list), new_target);
}
ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, Optional<MarkedVector<Value>> arguments_list, FunctionObject* new_target = nullptr)
{
return construct_impl(vm, function, move(arguments_list), new_target);
}
// 10.1.13 OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] ), https://tc39.es/ecma262/#sec-ordinarycreatefromconstructor
template<typename T, typename... Args>
ThrowCompletionOr<NonnullGCPtr<T>> ordinary_create_from_constructor(VM& vm, FunctionObject const& constructor, NonnullGCPtr<Object> (Intrinsics::*intrinsic_default_prototype)(), Args&&... args)
{
auto& realm = *vm.current_realm();
auto* prototype = TRY(get_prototype_from_constructor(vm, constructor, intrinsic_default_prototype));
return MUST_OR_THROW_OOM(realm.heap().allocate<T>(realm, forward<Args>(args)..., *prototype));
}
// 14.1 MergeLists ( a, b ), https://tc39.es/proposal-temporal/#sec-temporal-mergelists
template<typename T>
Vector<T> merge_lists(Vector<T> const& a, Vector<T> const& b)
{
// 1. Let merged be a new empty List.
Vector<T> merged;
// 2. For each element element of a, do
for (auto const& element : a) {
// a. If merged does not contain element, then
if (!merged.contains_slow(element)) {
// i. Append element to merged.
merged.append(element);
}
}
// 3. For each element element of b, do
for (auto const& element : b) {
// a. If merged does not contain element, then
if (!merged.contains_slow(element)) {
// i. Append element to merged.
merged.append(element);
}
}
// 4. Return merged.
return merged;
}
// x modulo y, https://tc39.es/ecma262/#eqn-modulo
template<Arithmetic T, Arithmetic U>
auto modulo(T x, U y)
{
// The notation “x modulo y” (y must be finite and non-zero) computes a value k of the same sign as y (or zero) such that abs(k) < abs(y) and x - k = q × y for some integer q.
VERIFY(y != 0);
if constexpr (IsFloatingPoint<T> || IsFloatingPoint<U>) {
if constexpr (IsFloatingPoint<U>)
VERIFY(isfinite(y));
return fmod(fmod(x, y) + y, y);
} else {
return ((x % y) + y) % y;
}
}
auto modulo(Crypto::BigInteger auto const& x, Crypto::BigInteger auto const& y)
{
VERIFY(!y.is_zero());
auto result = x.divided_by(y).remainder;
if (result.is_negative())
result = result.plus(y);
return result;
}
}
|
