JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / runtime / StringConstructor.cpp

diff --git a/runtime/StringConstructor.cpp b/runtime/StringConstructor.cpp
index ea6e12853e776820cdef9df6fbdb604a50eff564..e8d39697073e355d3775206731631e6e8773310f 100644 (file)
--- a/runtime/StringConstructor.cpp
+++ b/runtime/StringConstructor.cpp
@@ -21,15 +21,18 @@
 #include "config.h"
 #include "StringConstructor.h"
 
+#include "Error.h"
 #include "Executable.h"
 #include "JITCode.h"
 #include "JSFunction.h"
 #include "JSGlobalObject.h"
+#include "JSCInlines.h"
 #include "StringPrototype.h"
 
 namespace JSC {
 
 static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState*);
+static EncodedJSValue JSC_HOST_CALL stringFromCodePoint(ExecState*);
 
 }
 
@@ -37,31 +40,33 @@ static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState*);
 
 namespace JSC {
 
-const ClassInfo StringConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::stringConstructorTable };
+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
+  fromCodePoint         stringFromCodePoint        DontEnum|Function 1
+  raw                   stringRaw                  DontEnum|Function 1
 @end
 */
 
-ASSERT_CLASS_FITS_IN_CELL(StringConstructor);
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(StringConstructor);
 
-StringConstructor::StringConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, StringPrototype* stringPrototype)
-    : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, stringPrototype->classInfo()->className))
+StringConstructor::StringConstructor(VM& vm, Structure* structure)
+    : InternalFunction(vm, structure)
 {
-    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, stringPrototype, ReadOnly | DontEnum | DontDelete);
-    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
 }
 
-bool StringConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
+void StringConstructor::finishCreation(VM& vm, StringPrototype* stringPrototype)
 {
-    return getStaticFunctionSlot<InternalFunction>(exec, ExecState::stringConstructorTable(exec), this, propertyName, slot);
+    Base::finishCreation(vm, stringPrototype->classInfo()->className);
+    putDirectWithoutTransition(vm, vm.propertyNames->prototype, stringPrototype, ReadOnly | DontEnum | DontDelete);
+    putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
 }
 
-bool StringConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+bool StringConstructor::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
 {
-    return getStaticFunctionDescriptor<InternalFunction>(exec, ExecState::stringConstructorTable(exec), this, propertyName, descriptor);
+    return getStaticFunctionSlot<InternalFunction>(exec, stringConstructorTable, jsCast<StringConstructor*>(object), propertyName, slot);
 }
 
 // ------------------------------ Functions --------------------------------
@@ -72,39 +77,81 @@ static NEVER_INLINE JSValue stringFromCharCodeSlowCase(ExecState* exec)
     UChar* buf;
     PassRefPtr<StringImpl> impl = StringImpl::createUninitialized(length, buf);
     for (unsigned i = 0; i < length; ++i)
-        buf[i] = static_cast<UChar>(exec->argument(i).toUInt32(exec));
+        buf[i] = static_cast<UChar>(exec->uncheckedArgument(i).toUInt32(exec));
     return jsString(exec, impl);
 }
 
 static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState* exec)
 {
     if (LIKELY(exec->argumentCount() == 1))
-        return JSValue::encode(jsSingleCharacterString(exec, exec->argument(0).toUInt32(exec)));
+        return JSValue::encode(jsSingleCharacterString(exec, exec->uncheckedArgument(0).toUInt32(exec)));
     return JSValue::encode(stringFromCharCodeSlowCase(exec));
 }
 
+JSCell* JSC_HOST_CALL stringFromCharCode(ExecState* exec, int32_t arg)
+{
+    return jsSingleCharacterString(exec, arg);
+}
+
+static EncodedJSValue JSC_HOST_CALL stringFromCodePoint(ExecState* exec)
+{
+    unsigned length = exec->argumentCount();
+    StringBuilder builder;
+    builder.reserveCapacity(length);
+
+    for (unsigned i = 0; i < length; ++i) {
+        double codePointAsDouble = exec->uncheckedArgument(i).toNumber(exec);
+        if (exec->hadException())
+            return JSValue::encode(jsUndefined());
+
+        uint32_t codePoint = static_cast<uint32_t>(codePointAsDouble);
+
+        if (codePoint != codePointAsDouble || codePoint > UCHAR_MAX_VALUE)
+            return throwVMError(exec, 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));
+        }
+    }
+
+    return JSValue::encode(jsString(exec, builder.toString()));
+}
+
 static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec)
 {
     JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
+    VM& vm = exec->vm();
+
     if (!exec->argumentCount())
-        return JSValue::encode(new (exec) StringObject(exec, globalObject->stringObjectStructure()));
-    return JSValue::encode(new (exec) StringObject(exec, globalObject->stringObjectStructure(), exec->argument(0).toString(exec)));
+        return JSValue::encode(StringObject::create(vm, globalObject->stringObjectStructure()));
+
+    return JSValue::encode(StringObject::create(vm, globalObject->stringObjectStructure(), exec->uncheckedArgument(0).toString(exec)));
 }
 
-ConstructType StringConstructor::getConstructData(ConstructData& constructData)
+ConstructType StringConstructor::getConstructData(JSCell*, ConstructData& constructData)
 {
     constructData.native.function = constructWithStringConstructor;
     return ConstructTypeHost;
 }
 
+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(jsString(exec, exec->argument(0).toString(exec)));
+    return JSValue::encode(stringConstructor(exec, exec->uncheckedArgument(0)));
 }
 
-CallType StringConstructor::getCallData(CallData& callData)
+CallType StringConstructor::getCallData(JSCell*, CallData& callData)
 {
     callData.native.function = callStringConstructor;
     return CallTypeHost;