// toPrecision converts a number to a string, takeing an argument specifying a
// number of significant figures to round the significand to. For positive
// exponent, all values that can be represented using a decimal fraction will
// be, e.g. when rounding to 3 s.f. any value up to 999 will be formated as a
// decimal, whilst 1000 is converted to the exponential representation 1.00e+3.
// For negative exponents values >= 1e-6 are formated as decimal fractions,
// with smaller values converted to exponential representation.
EncodedJSValue JSC_HOST_CALL numberProtoFuncToPrecision(ExecState* exec)
{
// Get x (the double value of this, which should be a Number).
JSValue thisValue = exec->hostThisValue();
JSValue v = thisValue.getJSNumber();
if (!v)
return throwVMTypeError(exec);
double x = v.uncheckedGetNumber();
// Get the argument.
int significantFigures;
bool isUndefined;
if (!getIntegerArgumentInRange(exec, 1, 21, significantFigures, isUndefined))
return throwVMError(exec, createRangeError(exec, "toPrecision() argument must be between 1 and 21"));
// To precision called with no argument is treated as ToString.
if (isUndefined)
return JSValue::encode(jsString(exec, UString::number(x)));
// Handle NaN and Infinity.
if (isnan(x) || isinf(x))
return JSValue::encode(jsString(exec, UString::number(x)));
// Convert to decimal with rounding.
DecimalNumber number(x, RoundingSignificantFigures, significantFigures);
// If number is in the range 1e-6 <= x < pow(10, significantFigures) then format
// as decimal. Otherwise, format the number as an exponential. Decimal format
// demands a minimum of (exponent + 1) digits to represent a number, for example
// 1234 (1.234e+3) requires 4 digits. (See ECMA-262 15.7.4.7.10.c)
NumberToStringBuffer buffer;
unsigned length = number.exponent() >= -6 && number.exponent() < significantFigures
? number.toStringDecimal(buffer, WTF::NumberToStringBufferLength)
: number.toStringExponential(buffer, WTF::NumberToStringBufferLength);
return JSValue::encode(jsString(exec, UString(buffer, length)));
}
// toFixed converts a number to a string, always formatting as an a decimal fraction.
// This method takes an argument specifying a number of decimal places to round the
// significand to. However when converting large values (1e+21 and above) this
// method will instead fallback to calling ToString.
EncodedJSValue JSC_HOST_CALL numberProtoFuncToFixed(ExecState* exec)
{
// Get x (the double value of this, which should be a Number).
JSValue thisValue = exec->hostThisValue();
JSValue v = thisValue.getJSNumber();
if (!v)
return throwVMTypeError(exec);
double x = v.uncheckedGetNumber();
// Get the argument.
int decimalPlaces;
bool isUndefined; // This is ignored; undefined treated as 0.
if (!getIntegerArgumentInRange(exec, 0, 20, decimalPlaces, isUndefined))
return throwVMError(exec, createRangeError(exec, "toFixed() argument must be between 0 and 20"));
// 15.7.4.5.7 states "If x >= 10^21, then let m = ToString(x)"
// This also covers Ininity, and structure the check so that NaN
// values are also handled by numberToString
if (!(fabs(x) < 1e+21))
return JSValue::encode(jsString(exec, UString::number(x)));
// The check above will return false for NaN or Infinity, these will be
// handled by numberToString.
ASSERT(!isnan(x) && !isinf(x));
// Convert to decimal with rounding, and format as decimal.
NumberToStringBuffer buffer;
unsigned length = DecimalNumber(x, RoundingDecimalPlaces, decimalPlaces).toStringDecimal(buffer, WTF::NumberToStringBufferLength);
return JSValue::encode(jsString(exec, UString(buffer, length)));
}
double valueToDate(ExecState* exec, JSValue value)
{
if (value.isNumber())
return value.uncheckedGetNumber();
if (!value.inherits(&DateInstance::s_info))
return std::numeric_limits<double>::quiet_NaN();
return static_cast<DateInstance*>(value.toObject(exec))->internalNumber();
}
static ALWAYS_INLINE bool toThisNumber(JSValue thisValue, double &x)
{
JSValue v = thisValue.getJSNumber();
if (UNLIKELY(!v))
return false;
x = v.uncheckedGetNumber();
return true;
}
JSValue JSSQLTransactionSync::executeSql(ExecState* exec)
{
if (!exec->argumentCount()) {
setDOMException(exec, SYNTAX_ERR);
return jsUndefined();
}
String sqlStatement = ustringToString(exec->argument(0).toString(exec));
if (exec->hadException())
return jsUndefined();
// Now assemble the list of SQL arguments
Vector<SQLValue> sqlValues;
if (!exec->argument(1).isUndefinedOrNull()) {
JSObject* object = exec->argument(1).getObject();
if (!object) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return jsUndefined();
}
JSValue lengthValue = object->get(exec, exec->propertyNames().length);
if (exec->hadException())
return jsUndefined();
unsigned length = lengthValue.toUInt32(exec);
if (exec->hadException())
return jsUndefined();
for (unsigned i = 0 ; i < length; ++i) {
JSValue value = object->get(exec, i);
if (exec->hadException())
return jsUndefined();
if (value.isUndefinedOrNull())
sqlValues.append(SQLValue());
else if (value.isNumber())
sqlValues.append(value.uncheckedGetNumber());
else {
// Convert the argument to a string and append it
sqlValues.append(ustringToString(value.toString(exec)));
if (exec->hadException())
return jsUndefined();
}
}
}
ExceptionCode ec = 0;
JSValue result = toJS(exec, globalObject(), WTF::getPtr(m_impl->executeSQL(sqlStatement, sqlValues, ec)));
setDOMException(exec, ec);
return result;
}
static PassRefPtr<InspectorValue> jsToInspectorValue(ScriptState* scriptState, JSValue value)
{
if (!value) {
ASSERT_NOT_REACHED();
return 0;
}
if (value.isNull() || value.isUndefined())
return InspectorValue::null();
if (value.isBoolean())
return InspectorBasicValue::create(value.getBoolean());
if (value.isNumber())
return InspectorBasicValue::create(value.uncheckedGetNumber());
if (value.isString()) {
UString s = value.getString(scriptState);
return InspectorString::create(String(s.characters(), s.length()));
}
if (value.isObject()) {
if (isJSArray(&scriptState->globalData(), value)) {
RefPtr<InspectorArray> inspectorArray = InspectorArray::create();
JSArray* array = asArray(value);
unsigned length = array->length();
for (unsigned i = 0; i < length; i++) {
JSValue element = array->getIndex(i);
RefPtr<InspectorValue> elementValue = jsToInspectorValue(scriptState, element);
if (!elementValue) {
ASSERT_NOT_REACHED();
elementValue = InspectorValue::null();
}
inspectorArray->pushValue(elementValue);
}
return inspectorArray;
}
RefPtr<InspectorObject> inspectorObject = InspectorObject::create();
JSObject* object = value.getObject();
PropertyNameArray propertyNames(scriptState);
object->getOwnPropertyNames(scriptState, propertyNames);
for (size_t i = 0; i < propertyNames.size(); i++) {
const Identifier& name = propertyNames[i];
JSValue propertyValue = object->get(scriptState, name);
RefPtr<InspectorValue> inspectorValue = jsToInspectorValue(scriptState, propertyValue);
if (!inspectorValue) {
ASSERT_NOT_REACHED();
inspectorValue = InspectorValue::null();
}
inspectorObject->setValue(String(name.characters(), name.length()), inspectorValue);
}
return inspectorObject;
}
ASSERT_NOT_REACHED();
return 0;
}
EncodedJSValue JSC_HOST_CALL numberProtoFuncToString(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
JSValue v = thisValue.getJSNumber();
if (!v)
return throwVMTypeError(exec);
JSValue radixValue = exec->argument(0);
int radix;
if (radixValue.isInt32())
radix = radixValue.asInt32();
else if (radixValue.isUndefined())
radix = 10;
else
radix = static_cast<int>(radixValue.toInteger(exec)); // nan -> 0
if (radix == 10)
return JSValue::encode(jsString(exec, v.toString(exec)));
static const char* const digits = "0123456789abcdefghijklmnopqrstuvwxyz";
// Fast path for number to character conversion.
if (radix == 36) {
if (v.isInt32()) {
int x = v.asInt32();
if (static_cast<unsigned>(x) < 36) { // Exclude negatives
JSGlobalData* globalData = &exec->globalData();
return JSValue::encode(globalData->smallStrings.singleCharacterString(globalData, digits[x]));
}
}
}
if (radix < 2 || radix > 36)
return throwVMError(exec, createRangeError(exec, "toString() radix argument must be between 2 and 36"));
// INT_MAX results in 1024 characters left of the dot with radix 2
// give the same space on the right side. safety checks are in place
// unless someone finds a precise rule.
char s[2048 + 3];
const char* lastCharInString = s + sizeof(s) - 1;
double x = v.uncheckedGetNumber();
if (isnan(x) || isinf(x))
return JSValue::encode(jsString(exec, UString::number(x)));
bool isNegative = x < 0.0;
if (isNegative)
x = -x;
double integerPart = floor(x);
char* decimalPoint = s + sizeof(s) / 2;
// convert integer portion
char* p = decimalPoint;
double d = integerPart;
do {
int remainderDigit = static_cast<int>(fmod(d, radix));
*--p = digits[remainderDigit];
d /= radix;
} while ((d <= -1.0 || d >= 1.0) && s < p);
if (isNegative)
*--p = '-';
char* startOfResultString = p;
ASSERT(s <= startOfResultString);
d = x - integerPart;
p = decimalPoint;
const double epsilon = 0.001; // TODO: guessed. base on radix ?
bool hasFractionalPart = (d < -epsilon || d > epsilon);
if (hasFractionalPart) {
*p++ = '.';
do {
d *= radix;
const int digit = static_cast<int>(d);
*p++ = digits[digit];
d -= digit;
} while ((d < -epsilon || d > epsilon) && p < lastCharInString);
}
*p = '\0';
ASSERT(p < s + sizeof(s));
return JSValue::encode(jsString(exec, startOfResultString));
}
JSValue JSSQLTransaction::executeSql(ExecState* exec)
{
if (!exec->argumentCount()) {
setDOMException(exec, SYNTAX_ERR);
return jsUndefined();
}
String sqlStatement = ustringToString(exec->argument(0).toString(exec));
if (exec->hadException())
return jsUndefined();
// Now assemble the list of SQL arguments
Vector<SQLValue> sqlValues;
if (!exec->argument(1).isUndefinedOrNull()) {
JSObject* object = exec->argument(1).getObject();
if (!object) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return jsUndefined();
}
JSValue lengthValue = object->get(exec, exec->propertyNames().length);
if (exec->hadException())
return jsUndefined();
unsigned length = lengthValue.toUInt32(exec);
if (exec->hadException())
return jsUndefined();
for (unsigned i = 0 ; i < length; ++i) {
JSValue value = object->get(exec, i);
if (exec->hadException())
return jsUndefined();
if (value.isUndefinedOrNull())
sqlValues.append(SQLValue());
else if (value.isNumber())
sqlValues.append(value.uncheckedGetNumber());
else {
// Convert the argument to a string and append it
sqlValues.append(ustringToString(value.toString(exec)));
if (exec->hadException())
return jsUndefined();
}
}
}
RefPtr<SQLStatementCallback> callback;
if (!exec->argument(2).isUndefinedOrNull()) {
JSObject* object = exec->argument(2).getObject();
if (!object) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return jsUndefined();
}
callback = JSSQLStatementCallback::create(object, static_cast<JSDOMGlobalObject*>(globalObject()));
}
RefPtr<SQLStatementErrorCallback> errorCallback;
if (!exec->argument(3).isUndefinedOrNull()) {
JSObject* object = exec->argument(3).getObject();
if (!object) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return jsUndefined();
}
errorCallback = JSSQLStatementErrorCallback::create(object, static_cast<JSDOMGlobalObject*>(globalObject()));
}
ExceptionCode ec = 0;
m_impl->executeSQL(sqlStatement, sqlValues, callback.release(), errorCallback.release(), ec);
setDOMException(exec, ec);
return jsUndefined();
}
jvalue convertValueToJValue(ExecState* exec, RootObject* rootObject, JSValue value, JavaType javaType, const char* javaClassName)
{
JSLock lock(SilenceAssertionsOnly);
jvalue result;
memset(&result, 0, sizeof(jvalue));
switch (javaType) {
case JavaTypeArray:
case JavaTypeObject:
{
// FIXME: JavaJSObject::convertValueToJObject functionality is almost exactly the same,
// these functions should use common code.
if (value.isObject()) {
JSObject* object = asObject(value);
if (object->inherits(&JavaRuntimeObject::s_info)) {
// Unwrap a Java instance.
JavaRuntimeObject* runtimeObject = static_cast<JavaRuntimeObject*>(object);
JavaInstance* instance = runtimeObject->getInternalJavaInstance();
if (instance)
result.l = instance->javaInstance();
} else if (object->classInfo() == &RuntimeArray::s_info) {
// Input is a JavaScript Array that was originally created from a Java Array
RuntimeArray* imp = static_cast<RuntimeArray*>(object);
JavaArray* array = static_cast<JavaArray*>(imp->getConcreteArray());
result.l = array->javaArray();
} else if (object->classInfo() == &JSArray::s_info) {
// Input is a Javascript Array. We need to create it to a Java Array.
result.l = convertArrayInstanceToJavaArray(exec, asArray(value), javaClassName);
} else if ((!result.l && (!strcmp(javaClassName, "java.lang.Object")))
|| (!strcmp(javaClassName, "netscape.javascript.JSObject"))) {
// Wrap objects in JSObject instances.
JNIEnv* env = getJNIEnv();
jclass jsObjectClass = env->FindClass("sun/plugin/javascript/webkit/JSObject");
jmethodID constructorID = env->GetMethodID(jsObjectClass, "<init>", "(J)V");
if (constructorID) {
jlong nativeHandle = ptr_to_jlong(object);
rootObject->gcProtect(object);
result.l = env->NewObject(jsObjectClass, constructorID, nativeHandle);
}
}
}
// Create an appropriate Java object if target type is java.lang.Object.
if (!result.l && !strcmp(javaClassName, "java.lang.Object")) {
if (value.isString()) {
UString stringValue = asString(value)->value(exec);
JNIEnv* env = getJNIEnv();
jobject javaString = env->functions->NewString(env, (const jchar*)stringValue.characters(), stringValue.length());
result.l = javaString;
} else if (value.isNumber()) {
double doubleValue = value.uncheckedGetNumber();
JNIEnv* env = getJNIEnv();
jclass clazz = env->FindClass("java/lang/Double");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(D)V");
jobject javaDouble = env->functions->NewObject(env, clazz, constructor, doubleValue);
result.l = javaDouble;
} else if (value.isBoolean()) {
bool boolValue = value.getBoolean();
JNIEnv* env = getJNIEnv();
jclass clazz = env->FindClass("java/lang/Boolean");
jmethodID constructor = env->GetMethodID(clazz, "<init>", "(Z)V");
jobject javaBoolean = env->functions->NewObject(env, clazz, constructor, boolValue);
result.l = javaBoolean;
} else if (value.isUndefined()) {
UString stringValue = "undefined";
JNIEnv* env = getJNIEnv();
jobject javaString = env->functions->NewString(env, (const jchar*)stringValue.characters(), stringValue.length());
result.l = javaString;
}
}
// Convert value to a string if the target type is a java.lang.String, and we're not
// converting from a null.
if (!result.l && !strcmp(javaClassName, "java.lang.String")) {
if (!value.isNull()) {
UString stringValue = value.toString(exec);
JNIEnv* env = getJNIEnv();
jobject javaString = env->functions->NewString(env, (const jchar*)stringValue.characters(), stringValue.length());
result.l = javaString;
}
}
}
break;
case JavaTypeBoolean:
{
result.z = (jboolean)value.toNumber(exec);
}
break;
case JavaTypeByte:
{
result.b = (jbyte)value.toNumber(exec);
}
break;
case JavaTypeChar:
{
result.c = (jchar)value.toNumber(exec);
}
break;
case JavaTypeShort:
{
result.s = (jshort)value.toNumber(exec);
}
break;
case JavaTypeInt:
{
result.i = (jint)value.toNumber(exec);
}
break;
case JavaTypeLong:
{
result.j = (jlong)value.toNumber(exec);
}
break;
case JavaTypeFloat:
{
result.f = (jfloat)value.toNumber(exec);
}
break;
case JavaTypeDouble:
{
result.d = (jdouble)value.toNumber(exec);
}
break;
case JavaTypeInvalid:
case JavaTypeVoid:
break;
}
return result;
}
