The Tor Browser: js/src/jsbool.cpp@b8a032363ba2 (annotated)

js/src/jsbool.cpp@b8a032363ba2 (annotated)

js/src/jsbool.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * vim: set ts=8 sts=4 et sw=4 tw=99:
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /*
  * JS boolean implementation.
  */
 #include "jsboolinlines.h"
 #include "jsapi.h"
 #include "jsatom.h"
 #include "jscntxt.h"
 #include "jsobj.h"
 #include "jstypes.h"
 #include "vm/GlobalObject.h"
 #include "vm/ProxyObject.h"
 #include "vm/StringBuffer.h"
 #include "vm/BooleanObject-inl.h"
 using namespace js;
 using namespace js::types;
 const Class BooleanObject::class_ = {
     "Boolean",
     JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean),
     JS_PropertyStub,         /* addProperty */
     JS_DeletePropertyStub,   /* delProperty */
     JS_PropertyStub,         /* getProperty */
     JS_StrictPropertyStub,   /* setProperty */
     JS_EnumerateStub,
     JS_ResolveStub,
     JS_ConvertStub
 };
 MOZ_ALWAYS_INLINE bool
 IsBoolean(HandleValue v)
 {
     return v.isBoolean() || (v.isObject() && v.toObject().is<BooleanObject>());
 }
 #if JS_HAS_TOSOURCE
 MOZ_ALWAYS_INLINE bool
 bool_toSource_impl(JSContext *cx, CallArgs args)
 {
     HandleValue thisv = args.thisv();
     JS_ASSERT(IsBoolean(thisv));
     bool b = thisv.isBoolean() ? thisv.toBoolean() : thisv.toObject().as<BooleanObject>().unbox();
     StringBuffer sb(cx);
     if (!sb.append("(new Boolean(") || !BooleanToStringBuffer(b, sb) || !sb.append("))"))
         return false;
     JSString *str = sb.finishString();
     if (!str)
         return false;
     args.rval().setString(str);
     return true;
 }
 static bool
 bool_toSource(JSContext *cx, unsigned argc, Value *vp)
 {
     CallArgs args = CallArgsFromVp(argc, vp);
     return CallNonGenericMethod<IsBoolean, bool_toSource_impl>(cx, args);
 }
 #endif
 MOZ_ALWAYS_INLINE bool
 bool_toString_impl(JSContext *cx, CallArgs args)
 {
     HandleValue thisv = args.thisv();
     JS_ASSERT(IsBoolean(thisv));
     bool b = thisv.isBoolean() ? thisv.toBoolean() : thisv.toObject().as<BooleanObject>().unbox();
     args.rval().setString(js_BooleanToString(cx, b));
     return true;
 }
 static bool
 bool_toString(JSContext *cx, unsigned argc, Value *vp)
 {
     CallArgs args = CallArgsFromVp(argc, vp);
     return CallNonGenericMethod<IsBoolean, bool_toString_impl>(cx, args);
 }
 MOZ_ALWAYS_INLINE bool
 bool_valueOf_impl(JSContext *cx, CallArgs args)
 {
     HandleValue thisv = args.thisv();
     JS_ASSERT(IsBoolean(thisv));
     bool b = thisv.isBoolean() ? thisv.toBoolean() : thisv.toObject().as<BooleanObject>().unbox();
     args.rval().setBoolean(b);
     return true;
 }
 static bool
 bool_valueOf(JSContext *cx, unsigned argc, Value *vp)
 {
     CallArgs args = CallArgsFromVp(argc, vp);
     return CallNonGenericMethod<IsBoolean, bool_valueOf_impl>(cx, args);
 }
 static const JSFunctionSpec boolean_methods[] = {
 #if JS_HAS_TOSOURCE
     JS_FN(js_toSource_str,  bool_toSource,  0, 0),
 #endif
     JS_FN(js_toString_str,  bool_toString,  0, 0),
     JS_FS_END
 };
 static bool
 Boolean(JSContext *cx, unsigned argc, Value *vp)
 {
     CallArgs args = CallArgsFromVp(argc, vp);
     bool b = args.length() != 0 ? JS::ToBoolean(args[0]) : false;
     if (args.isConstructing()) {
         JSObject *obj = BooleanObject::create(cx, b);
         if (!obj)
             return false;
         args.rval().setObject(*obj);
     } else {
         args.rval().setBoolean(b);
     }
     return true;
 }
 JSObject *
 js_InitBooleanClass(JSContext *cx, HandleObject obj)
 {
     JS_ASSERT(obj->isNative());
     Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
     RootedObject booleanProto (cx, global->createBlankPrototype(cx, &BooleanObject::class_));
     if (!booleanProto)
         return nullptr;
     booleanProto->setFixedSlot(BooleanObject::PRIMITIVE_VALUE_SLOT, BooleanValue(false));
     RootedFunction ctor(cx, global->createConstructor(cx, Boolean, cx->names().Boolean, 1));
     if (!ctor)
         return nullptr;
     if (!LinkConstructorAndPrototype(cx, ctor, booleanProto))
         return nullptr;
     if (!DefinePropertiesAndBrand(cx, booleanProto, nullptr, boolean_methods))
         return nullptr;
     Handle<PropertyName*> valueOfName = cx->names().valueOf;
     RootedFunction
         valueOf(cx, NewFunction(cx, NullPtr(), bool_valueOf, 0, JSFunction::NATIVE_FUN,
                                 global, valueOfName));
     if (!valueOf)
         return nullptr;
     RootedValue value(cx, ObjectValue(*valueOf));
     if (!JSObject::defineProperty(cx, booleanProto, valueOfName, value,
                                   JS_PropertyStub, JS_StrictPropertyStub, 0))
     {
         return nullptr;
     }
     if (!GlobalObject::initBuiltinConstructor(cx, global, JSProto_Boolean, ctor, booleanProto))
         return nullptr;
     return booleanProto;
 }
 JSString *
 js_BooleanToString(ExclusiveContext *cx, bool b)
 {
     return b ? cx->names().true_ : cx->names().false_;
 }
 JS_PUBLIC_API(bool)
 js::ToBooleanSlow(HandleValue v)
 {
     if (v.isString())
         return v.toString()->length() != 0;
     JS_ASSERT(v.isObject());
     return !EmulatesUndefined(&v.toObject());
 }
 /*
  * This slow path is only ever taken for proxies wrapping Boolean objects
  * The only caller of the fast path, JSON's PreprocessValue, ensures that.
  */
 bool
 js::BooleanGetPrimitiveValueSlow(HandleObject wrappedBool)
 {
     JSObject *obj = wrappedBool->as<ProxyObject>().target();
     JS_ASSERT(obj);
     return obj->as<BooleanObject>().unbox();
 }

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js/src/jsbool.cpp@b8a032363ba2 (annotated)

js/src/jsbool.cpp