webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 61 insertions, 20 deletions

diff --git a/Source/JavaScriptCore/runtime/StringConstructor.cpp b/Source/JavaScriptCore/runtime/StringConstructor.cpp
index 207d8585a..9df4c9276 100644
--- a/Source/JavaScriptCore/runtime/StringConstructor.cpp
+++ b/Source/JavaScriptCore/runtime/StringConstructor.cpp
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
- *  Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *  Copyright (C) 2004-2008, 2016 Apple Inc. All rights reserved.
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
@@ -21,16 +21,18 @@
 #include "config.h"
 #include "StringConstructor.h"
 
-#include "Executable.h"
+#include "Error.h"
 #include "JITCode.h"
 #include "JSFunction.h"
 #include "JSGlobalObject.h"
-#include "Operations.h"
+#include "JSCInlines.h"
 #include "StringPrototype.h"
+#include <wtf/text/StringBuilder.h>
 
 namespace JSC {
 
 static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState*);
+static EncodedJSValue JSC_HOST_CALL stringFromCodePoint(ExecState*);
 
 }
 
@@ -38,11 +40,13 @@ static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState*);
 
 namespace JSC {
 
-const ClassInfo StringConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::stringConstructorTable, CREATE_METHOD_TABLE(StringConstructor) };
+const ClassInfo StringConstructor::s_info = { "Function", &InternalFunction::s_info, &stringConstructorTable, CREATE_METHOD_TABLE(StringConstructor) };
 
 /* Source for StringConstructor.lut.h
 @begin stringConstructorTable
-  fromCharCode          stringFromCharCode         DontEnum|Function 1
+  fromCharCode          stringFromCharCode         DontEnum|Function 1 FromCharCodeIntrinsic
+  fromCodePoint         stringFromCodePoint        DontEnum|Function 1
+  raw                   JSBuiltin                  DontEnum|Function 1
 @end
 */
 
@@ -60,21 +64,16 @@ void StringConstructor::finishCreation(VM& vm, StringPrototype* stringPrototype)
     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
 }
 
-bool StringConstructor::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
-{
-    return getStaticFunctionSlot<InternalFunction>(exec, ExecState::stringConstructorTable(exec->vm()), jsCast<StringConstructor*>(object), propertyName, slot);
-}
-
 // ------------------------------ Functions --------------------------------
 
 static NEVER_INLINE JSValue stringFromCharCodeSlowCase(ExecState* exec)
 {
     unsigned length = exec->argumentCount();
     UChar* buf;
-    PassRefPtr<StringImpl> impl = StringImpl::createUninitialized(length, buf);
+    auto impl = StringImpl::createUninitialized(length, buf);
     for (unsigned i = 0; i < length; ++i)
         buf[i] = static_cast<UChar>(exec->uncheckedArgument(i).toUInt32(exec));
-    return jsString(exec, impl);
+    return jsString(exec, WTFMove(impl));
 }
 
 static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState* exec)
@@ -89,34 +88,76 @@ JSCell* JSC_HOST_CALL stringFromCharCode(ExecState* exec, int32_t arg)
     return jsSingleCharacterString(exec, arg);
 }
 
-static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec)
+static EncodedJSValue JSC_HOST_CALL stringFromCodePoint(ExecState* exec)
 {
-    JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
     VM& vm = exec->vm();
+    auto scope = DECLARE_THROW_SCOPE(vm);
+
+    unsigned length = exec->argumentCount();
+    StringBuilder builder;
+    builder.reserveCapacity(length);
+
+    for (unsigned i = 0; i < length; ++i) {
+        double codePointAsDouble = exec->uncheckedArgument(i).toNumber(exec);
+        RETURN_IF_EXCEPTION(scope, encodedJSValue());
+
+        uint32_t codePoint = static_cast<uint32_t>(codePointAsDouble);
+
+        if (codePoint != codePointAsDouble || codePoint > UCHAR_MAX_VALUE)
+            return throwVMError(exec, scope, createRangeError(exec, ASCIILiteral("Arguments contain a value that is out of range of code points")));
+
+        if (U_IS_BMP(codePoint))
+            builder.append(static_cast<UChar>(codePoint));
+        else {
+            builder.append(U16_LEAD(codePoint));
+            builder.append(U16_TRAIL(codePoint));
+        }
+    }
+
+    scope.release();
+    return JSValue::encode(jsString(exec, builder.toString()));
+}
+
+static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec)
+{
+    JSGlobalObject* globalObject = asInternalFunction(exec->jsCallee())->globalObject();
+    VM& vm = globalObject->vm();
+    auto scope = DECLARE_THROW_SCOPE(vm);
+
+    Structure* structure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->stringObjectStructure());
+    RETURN_IF_EXCEPTION(scope, encodedJSValue());
 
     if (!exec->argumentCount())
-        return JSValue::encode(StringObject::create(vm, globalObject->stringObjectStructure()));
-    
-    return JSValue::encode(StringObject::create(vm, globalObject->stringObjectStructure(), exec->uncheckedArgument(0).toString(exec)));
+        return JSValue::encode(StringObject::create(vm, structure));
+    JSString* str = exec->uncheckedArgument(0).toString(exec);
+    RETURN_IF_EXCEPTION(scope, encodedJSValue());
+    return JSValue::encode(StringObject::create(vm, structure, str));
 }
 
 ConstructType StringConstructor::getConstructData(JSCell*, ConstructData& constructData)
 {
     constructData.native.function = constructWithStringConstructor;
-    return ConstructTypeHost;
+    return ConstructType::Host;
+}
+
+JSCell* stringConstructor(ExecState* exec, JSValue argument)
+{
+    if (argument.isSymbol())
+        return jsNontrivialString(exec, asSymbol(argument)->descriptiveString());
+    return argument.toString(exec);
 }
 
 static EncodedJSValue JSC_HOST_CALL callStringConstructor(ExecState* exec)
 {
     if (!exec->argumentCount())
         return JSValue::encode(jsEmptyString(exec));
-    return JSValue::encode(exec->uncheckedArgument(0).toString(exec));
+    return JSValue::encode(stringConstructor(exec, exec->uncheckedArgument(0)));
 }
 
 CallType StringConstructor::getCallData(JSCell*, CallData& callData)
 {
     callData.native.function = callStringConstructor;
-    return CallTypeHost;
+    return CallType::Host;
 }
 
 } // namespace JSC