X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/9dae56ea45a0f5f8136a5c93d6f3a7f99399ca73..refs/heads/master:/runtime/StringConstructor.cpp

diff --git a/runtime/StringConstructor.cpp b/runtime/StringConstructor.cpp
index dc1d60f..e8d3969 100644
--- a/runtime/StringConstructor.cpp
+++ b/runtime/StringConstructor.cpp
@@ -21,67 +21,137 @@
 #include "config.h"
 #include "StringConstructor.h"
 
+#include "Error.h"
+#include "Executable.h"
+#include "JITCode.h"
+#include "JSFunction.h"
 #include "JSGlobalObject.h"
-#include "PrototypeFunction.h"
+#include "JSCInlines.h"
 #include "StringPrototype.h"
 
 namespace JSC {
 
-static NEVER_INLINE JSValuePtr stringFromCharCodeSlowCase(ExecState* exec, const ArgList& args)
+static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState*);
+static EncodedJSValue JSC_HOST_CALL stringFromCodePoint(ExecState*);
+
+}
+
+#include "StringConstructor.lut.h"
+
+namespace JSC {
+
+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
+*/
+
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(StringConstructor);
+
+StringConstructor::StringConstructor(VM& vm, Structure* structure)
+    : InternalFunction(vm, structure)
+{
+}
+
+void StringConstructor::finishCreation(VM& vm, StringPrototype* stringPrototype)
 {
-    UChar* buf = static_cast<UChar*>(fastMalloc(args.size() * sizeof(UChar)));
-    UChar* p = buf;
-    ArgList::const_iterator end = args.end();
-    for (ArgList::const_iterator it = args.begin(); it != end; ++it)
-        *p++ = static_cast<UChar>((*it).jsValue(exec).toUInt32(exec));
-    return jsString(exec, UString(buf, p - buf, false));
+    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);
 }
 
-static JSValuePtr stringFromCharCode(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+bool StringConstructor::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
 {
-    if (LIKELY(args.size() == 1))
-        return jsSingleCharacterString(exec, args.at(exec, 0).toUInt32(exec));
-    return stringFromCharCodeSlowCase(exec, args);
+    return getStaticFunctionSlot<InternalFunction>(exec, stringConstructorTable, jsCast<StringConstructor*>(object), propertyName, slot);
 }
 
-ASSERT_CLASS_FITS_IN_CELL(StringConstructor);
+// ------------------------------ Functions --------------------------------
 
-StringConstructor::StringConstructor(ExecState* exec, PassRefPtr<Structure> structure, Structure* prototypeFunctionStructure, StringPrototype* stringPrototype)
-    : InternalFunction(&exec->globalData(), structure, Identifier(exec, stringPrototype->classInfo()->className))
+static NEVER_INLINE JSValue stringFromCharCodeSlowCase(ExecState* exec)
 {
-    // ECMA 15.5.3.1 String.prototype
-    putDirectWithoutTransition(exec->propertyNames().prototype, stringPrototype, ReadOnly | DontEnum | DontDelete);
+    unsigned length = exec->argumentCount();
+    UChar* buf;
+    PassRefPtr<StringImpl> 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);
+}
 
-    // ECMA 15.5.3.2 fromCharCode()
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, prototypeFunctionStructure, 1, exec->propertyNames().fromCharCode, stringFromCharCode), DontEnum);
+static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState* exec)
+{
+    if (LIKELY(exec->argumentCount() == 1))
+        return JSValue::encode(jsSingleCharacterString(exec, exec->uncheckedArgument(0).toUInt32(exec)));
+    return JSValue::encode(stringFromCharCodeSlowCase(exec));
+}
 
-    // no. of arguments for constructor
-    putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete);
+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()));
 }
 
-// ECMA 15.5.2
-static JSObject* constructWithStringConstructor(ExecState* exec, JSObject*, const ArgList& args)
+static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec)
 {
-    if (args.isEmpty())
-        return new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure());
-    return new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure(), args.at(exec, 0).toString(exec));
+    JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
+    VM& vm = exec->vm();
+
+    if (!exec->argumentCount())
+        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;
 }
 
-// ECMA 15.5.1
-static JSValuePtr callStringConstructor(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+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 (args.isEmpty())
-        return jsEmptyString(exec);
-    return jsString(exec, args.at(exec, 0).toString(exec));
+    if (!exec->argumentCount())
+        return JSValue::encode(jsEmptyString(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;