v8/tools/detect-builtins.js
jkummerow@chromium.org bf7b4c12c3 Add a script that can generate simple test cases for user-exposed JS builtins
(we won't check in any such tests; they can be generated on the fly when needed)

R=mbarbella@chromium.org

Review URL: https://codereview.chromium.org/554683002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23862 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-09-11 09:58:58 +00:00

52 lines
1.5 KiB
JavaScript

// 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.
(function(global) {
var GetProperties = function(this_name, object) {
var result = {};
try {
var names = Object.getOwnPropertyNames(object);
} catch(e) {
return;
}
for (var i = 0; i < names.length; ++i) {
var name = names[i];
if (typeof object === "function") {
if (name === "length" ||
name === "name" ||
name === "arguments" ||
name === "caller" ||
name === "prototype") {
continue;
}
}
// Avoid endless recursion.
if (this_name === "prototype" && name === "constructor") continue;
// Could get this from the parent, but having it locally is easier.
var property = { "name": name };
try {
var value = object[name];
} catch(e) {
property.type = "getter";
result[name] = property;
continue;
}
var type = typeof value;
property.type = type;
if (type === "function") {
property.length = value.length;
property.prototype = GetProperties("prototype", value.prototype);
}
property.properties = GetProperties(name, value);
result[name] = property;
}
return result;
};
var g = GetProperties("", global, "");
print(JSON.stringify(g, undefined, 2));
})(this); // Must wrap in anonymous closure or it'll detect itself as builtin.