7d6a3b433f
now, the custom call generator stuff is disabled. Review URL: http://codereview.chromium.org/1094014 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4217 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
111 lines
4.1 KiB
JavaScript
111 lines
4.1 KiB
JavaScript
// Copyright 2006-2008 the V8 project authors. 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.
|
|
|
|
// This file contains infrastructure used by the API. See
|
|
// v8natives.js for an explanation of these files are processed and
|
|
// loaded.
|
|
|
|
|
|
function CreateDate(time) {
|
|
var date = new $Date();
|
|
date.setTime(time);
|
|
return date;
|
|
}
|
|
|
|
|
|
const kApiFunctionCache = {};
|
|
const functionCache = kApiFunctionCache;
|
|
|
|
|
|
function Instantiate(data, name) {
|
|
if (!%IsTemplate(data)) return data;
|
|
var tag = %GetTemplateField(data, kApiTagOffset);
|
|
switch (tag) {
|
|
case kFunctionTag:
|
|
return InstantiateFunction(data, name);
|
|
case kNewObjectTag:
|
|
var Constructor = %GetTemplateField(data, kApiConstructorOffset);
|
|
var result = Constructor ? new (Instantiate(Constructor))() : {};
|
|
ConfigureTemplateInstance(result, data);
|
|
result = %ToFastProperties(result);
|
|
return result;
|
|
default:
|
|
throw 'Unknown API tag <' + tag + '>';
|
|
}
|
|
}
|
|
|
|
|
|
function InstantiateFunction(data, name) {
|
|
// We need a reference to kApiFunctionCache in the stack frame
|
|
// if we need to bail out from a stack overflow.
|
|
var cache = kApiFunctionCache;
|
|
var serialNumber = %GetTemplateField(data, kApiSerialNumberOffset);
|
|
var isFunctionCached =
|
|
(serialNumber in cache) && (cache[serialNumber] != kUninitialized);
|
|
if (!isFunctionCached) {
|
|
try {
|
|
cache[serialNumber] = null;
|
|
var fun = %CreateApiFunction(data);
|
|
if (name) %FunctionSetName(fun, name);
|
|
cache[serialNumber] = fun;
|
|
var prototype = %GetTemplateField(data, kApiPrototypeTemplateOffset);
|
|
fun.prototype = prototype ? Instantiate(prototype) : {};
|
|
%SetProperty(fun.prototype, "constructor", fun, DONT_ENUM);
|
|
var parent = %GetTemplateField(data, kApiParentTemplateOffset);
|
|
if (parent) {
|
|
var parent_fun = Instantiate(parent);
|
|
fun.prototype.__proto__ = parent_fun.prototype;
|
|
}
|
|
ConfigureTemplateInstance(fun, data);
|
|
} catch (e) {
|
|
cache[serialNumber] = kUninitialized;
|
|
throw e;
|
|
}
|
|
}
|
|
return cache[serialNumber];
|
|
}
|
|
|
|
|
|
function ConfigureTemplateInstance(obj, data) {
|
|
var properties = %GetTemplateField(data, kApiPropertyListOffset);
|
|
if (properties) {
|
|
// Disable access checks while instantiating the object.
|
|
var requires_access_checks = %DisableAccessChecks(obj);
|
|
try {
|
|
for (var i = 0; i < properties[0]; i += 3) {
|
|
var name = properties[i + 1];
|
|
var prop_data = properties[i + 2];
|
|
var attributes = properties[i + 3];
|
|
var value = Instantiate(prop_data, name);
|
|
%SetProperty(obj, name, value, attributes);
|
|
}
|
|
} finally {
|
|
if (requires_access_checks) %EnableAccessChecks(obj);
|
|
}
|
|
}
|
|
}
|