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/*
* Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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
* OWNER 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.
*/
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_throw_exception.h"
namespace blink {
v8::Local<v8::Function> GetBoundFunction(v8::Local<v8::Function> function) {
v8::Local<v8::Value> bound_function = function->GetBoundFunction();
return bound_function->IsFunction()
? v8::Local<v8::Function>::Cast(bound_function)
: function;
}
v8::Local<v8::Value> FreezeV8Object(v8::Local<v8::Value> value,
v8::Isolate* isolate) {
value.As<v8::Object>()
->SetIntegrityLevel(isolate->GetCurrentContext(),
v8::IntegrityLevel::kFrozen)
.ToChecked();
return value;
}
namespace bindings {
void V8ObjectToPropertyDescriptor(v8::Isolate* isolate,
v8::Local<v8::Value> descriptor_object,
V8PropertyDescriptorBag& descriptor_bag) {
// TODO(crbug.com/1261485): This function is the same as
// v8::internal::PropertyDescriptor::ToPropertyDescriptor. Make the
// function exposed public and re-use it rather than re-implementing
// the same logic in Blink.
auto& desc = descriptor_bag;
desc = V8PropertyDescriptorBag();
if (!descriptor_object->IsObject()) {
V8ThrowException::ThrowTypeError(isolate,
"Property description must be an object.");
return;
}
v8::Local<v8::Context> current_context = isolate->GetCurrentContext();
v8::Local<v8::Object> v8_desc = descriptor_object.As<v8::Object>();
auto get_value = [&](const char* property, bool& has,
v8::Local<v8::Value>& value) -> bool {
const auto& v8_property = V8AtomicString(isolate, property);
if (!v8_desc->Has(current_context, v8_property).To(&has)) {
return false;
}
if (has) {
if (!v8_desc->Get(current_context, v8_property).ToLocal(&value)) {
return false;
}
} else {
value = v8::Undefined(isolate);
}
return true;
};
auto get_bool = [&](const char* property, bool& has, bool& value) -> bool {
v8::Local<v8::Value> v8_value;
if (!get_value(property, has, v8_value))
return false;
if (has) {
value = v8_value->ToBoolean(isolate)->Value();
}
return true;
};
if (!get_bool("enumerable", desc.has_enumerable, desc.enumerable))
return;
if (!get_bool("configurable", desc.has_configurable, desc.configurable))
return;
if (!get_value("value", desc.has_value, desc.value))
return;
if (!get_bool("writable", desc.has_writable, desc.writable))
return;
if (!get_value("get", desc.has_get, desc.get))
return;
if (!get_value("set", desc.has_set, desc.set))
return;
if ((desc.has_get || desc.has_set) && (desc.has_value || desc.has_writable)) {
V8ThrowException::ThrowTypeError(
isolate,
"Invalid property descriptor. Cannot both specify accessors and "
"a value or writable attribute");
return;
}
}
} // namespace bindings
} // namespace blink
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