From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 js/src/jsbool.cpp | 177 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 177 insertions(+)
 create mode 100644 js/src/jsbool.cpp

(limited to 'js/src/jsbool.cpp')

diff --git a/js/src/jsbool.cpp b/js/src/jsbool.cpp
new file mode 100644
index 0000000000..c8109b02c2
--- /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());
+}
-- 
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