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-rw-r--r--js/src/jsbool.cpp177
1 files changed, 177 insertions, 0 deletions
diff --git a/js/src/jsbool.cpp b/js/src/jsbool.cpp
new file mode 100644
index 000000000..c8109b02c
--- /dev/null
+++ b/js/src/jsbool.cpp
@@ -0,0 +1,177 @@
+/* -*- 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;
+
+const Class BooleanObject::class_ = {
+ "Boolean",
+ JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean)
+};
+
+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, const CallArgs& args)
+{
+ HandleValue thisv = args.thisv();
+ MOZ_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, const CallArgs& args)
+{
+ HandleValue thisv = args.thisv();
+ MOZ_ASSERT(IsBoolean(thisv));
+
+ bool b = thisv.isBoolean() ? thisv.toBoolean() : thisv.toObject().as<BooleanObject>().unbox();
+ args.rval().setString(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, const CallArgs& args)
+{
+ HandleValue thisv = args.thisv();
+ MOZ_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_FN(js_valueOf_str, bool_valueOf, 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()) {
+ RootedObject newTarget (cx, &args.newTarget().toObject());
+ RootedObject proto(cx);
+
+ if (!GetPrototypeFromConstructor(cx, newTarget, &proto))
+ return false;
+
+ JSObject* obj = BooleanObject::create(cx, b, proto);
+ if (!obj)
+ return false;
+ args.rval().setObject(*obj);
+ } else {
+ args.rval().setBoolean(b);
+ }
+ return true;
+}
+
+JSObject*
+js::InitBooleanClass(JSContext* cx, HandleObject obj)
+{
+ MOZ_ASSERT(obj->isNative());
+
+ Rooted<GlobalObject*> global(cx, &obj->as<GlobalObject>());
+
+ Rooted<BooleanObject*> booleanProto(cx, global->createBlankPrototype<BooleanObject>(cx));
+ 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 (!DefinePropertiesAndFunctions(cx, booleanProto, nullptr, boolean_methods))
+ 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;
+
+ MOZ_ASSERT(v.isObject());
+ return !EmulatesUndefined(&v.toObject());
+}