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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/runtime/runtime-utils.h"
#include "src/accessors.h"
#include "src/arguments.h"
#include "src/compiler.h"
#include "src/isolate-inl.h"
#include "src/messages.h"
namespace v8 {
namespace internal {
RUNTIME_FUNCTION(Runtime_FunctionGetName) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0);
if (function->IsJSBoundFunction()) {
RETURN_RESULT_OR_FAILURE(
isolate, JSBoundFunction::GetName(
isolate, Handle<JSBoundFunction>::cast(function)));
} else {
return *JSFunction::GetName(isolate, Handle<JSFunction>::cast(function));
}
}
// TODO(5530): Remove once uses in debug.js are gone.
RUNTIME_FUNCTION(Runtime_FunctionGetScript) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0);
if (function->IsJSFunction()) {
Handle<Object> script(
Handle<JSFunction>::cast(function)->shared()->script(), isolate);
if (script->IsScript()) {
return *Script::GetWrapper(Handle<Script>::cast(script));
}
}
return isolate->heap()->undefined_value();
}
RUNTIME_FUNCTION(Runtime_FunctionGetScriptId) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0);
if (function->IsJSFunction()) {
Handle<Object> script(
Handle<JSFunction>::cast(function)->shared()->script(), isolate);
if (script->IsScript()) {
return Smi::FromInt(Handle<Script>::cast(script)->id());
}
}
return Smi::FromInt(-1);
}
RUNTIME_FUNCTION(Runtime_FunctionGetSourceCode) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0);
if (function->IsJSFunction()) {
Handle<SharedFunctionInfo> shared(
Handle<JSFunction>::cast(function)->shared());
return *SharedFunctionInfo::GetSourceCode(shared);
}
return isolate->heap()->undefined_value();
}
RUNTIME_FUNCTION(Runtime_FunctionGetScriptSourcePosition) {
SealHandleScope shs(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_CHECKED(JSFunction, fun, 0);
int pos = fun->shared()->start_position();
return Smi::FromInt(pos);
}
RUNTIME_FUNCTION(Runtime_FunctionGetContextData) {
SealHandleScope shs(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_CHECKED(JSFunction, fun, 0);
return fun->native_context()->debug_context_id();
}
RUNTIME_FUNCTION(Runtime_FunctionSetLength) {
SealHandleScope shs(isolate);
DCHECK_EQ(2, args.length());
CONVERT_ARG_CHECKED(JSFunction, fun, 0);
CONVERT_SMI_ARG_CHECKED(length, 1);
fun->shared()->set_length(length);
return isolate->heap()->undefined_value();
}
RUNTIME_FUNCTION(Runtime_FunctionIsAPIFunction) {
SealHandleScope shs(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_CHECKED(JSFunction, f, 0);
return isolate->heap()->ToBoolean(f->shared()->IsApiFunction());
}
RUNTIME_FUNCTION(Runtime_SetCode) {
HandleScope scope(isolate);
DCHECK_EQ(2, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSFunction, target, 0);
CONVERT_ARG_HANDLE_CHECKED(JSFunction, source, 1);
Handle<SharedFunctionInfo> target_shared(target->shared());
Handle<SharedFunctionInfo> source_shared(source->shared());
if (!source->is_compiled() &&
!Compiler::Compile(source, Compiler::KEEP_EXCEPTION)) {
return isolate->heap()->exception();
}
// Set the code, scope info, formal parameter count, and the length
// of the target shared function info.
target_shared->set_code(source_shared->code());
if (source_shared->HasBytecodeArray()) {
target_shared->set_bytecode_array(source_shared->bytecode_array());
}
target_shared->set_scope_info(source_shared->scope_info());
target_shared->set_outer_scope_info(source_shared->outer_scope_info());
target_shared->set_length(source_shared->GetLength());
target_shared->set_feedback_metadata(source_shared->feedback_metadata());
target_shared->set_internal_formal_parameter_count(
source_shared->internal_formal_parameter_count());
target_shared->set_start_position_and_type(
source_shared->start_position_and_type());
target_shared->set_end_position(source_shared->end_position());
bool was_native = target_shared->native();
target_shared->set_compiler_hints(source_shared->compiler_hints());
target_shared->set_native(was_native);
target_shared->set_function_literal_id(source_shared->function_literal_id());
Handle<Object> source_script(source_shared->script(), isolate);
if (source_script->IsScript()) {
SharedFunctionInfo::SetScript(source_shared,
isolate->factory()->undefined_value());
}
SharedFunctionInfo::SetScript(target_shared, source_script);
// Set the code of the target function.
target->set_code(source_shared->code());
Handle<Context> context(source->context());
target->set_context(*context);
// Make sure we get a fresh copy of the literal vector to avoid cross
// context contamination, and that the literal vector makes it's way into
// the target_shared optimized code map.
JSFunction::EnsureLiterals(target);
if (isolate->logger()->is_logging_code_events() || isolate->is_profiling()) {
isolate->logger()->LogExistingFunction(
source_shared, Handle<AbstractCode>(source_shared->abstract_code()));
}
return *target;
}
// Set the native flag on the function.
// This is used to decide if we should transform null and undefined
// into the global object when doing call and apply.
RUNTIME_FUNCTION(Runtime_SetNativeFlag) {
SealHandleScope shs(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_CHECKED(Object, object, 0);
if (object->IsJSFunction()) {
JSFunction* func = JSFunction::cast(object);
func->shared()->set_native(true);
}
return isolate->heap()->undefined_value();
}
RUNTIME_FUNCTION(Runtime_IsConstructor) {
SealHandleScope shs(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_CHECKED(Object, object, 0);
return isolate->heap()->ToBoolean(object->IsConstructor());
}
RUNTIME_FUNCTION(Runtime_Call) {
HandleScope scope(isolate);
DCHECK_LE(2, args.length());
int const argc = args.length() - 2;
CONVERT_ARG_HANDLE_CHECKED(Object, target, 0);
CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 1);
ScopedVector<Handle<Object>> argv(argc);
for (int i = 0; i < argc; ++i) {
argv[i] = args.at(2 + i);
}
RETURN_RESULT_OR_FAILURE(
isolate, Execution::Call(isolate, target, receiver, argc, argv.start()));
}
RUNTIME_FUNCTION(Runtime_IsFunction) {
SealHandleScope shs(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_CHECKED(Object, object, 0);
return isolate->heap()->ToBoolean(object->IsFunction());
}
RUNTIME_FUNCTION(Runtime_FunctionToString) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0);
return function->IsJSBoundFunction()
? *JSBoundFunction::ToString(
Handle<JSBoundFunction>::cast(function))
: *JSFunction::ToString(Handle<JSFunction>::cast(function));
}
} // namespace internal
} // namespace v8
|
