uint32_t toUInt32(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState)
{
// Fast case. The value is already a 32-bit unsigned integer.
if (value->IsUint32())
return value->Uint32Value();
// Fast case. The value is a 32-bit signed integer - possibly positive?
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= 0)
return result;
if (configuration == EnforceRange) {
exceptionState.throwTypeError("Value is outside the 'unsigned long' value range.");
return 0;
}
return result;
}
// Can the value be converted to a number?
V8TRYCATCH_EXCEPTION_RETURN(v8::Local<v8::Number>, numberObject, value->ToNumber(), exceptionState, 0);
if (numberObject.IsEmpty()) {
exceptionState.throwTypeError("Not convertible to a number value (of type 'unsigned long'.)");
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), 0, kMaxUInt32, "unsigned long", exceptionState);
// Does the value convert to nan or to an infinity?
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue))
return 0;
if (configuration == Clamp)
return clampTo<uint32_t>(numberObject->Value());
V8TRYCATCH_RETURN(uint32_t, result, numberObject->Uint32Value(), 0);
return result;
}
uint64_t toUInt64(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState)
{
// Fast case. The value is a 32-bit unsigned integer.
if (value->IsUint32())
return value->Uint32Value();
// Fast case. The value is a 32-bit integer.
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= 0)
return result;
if (configuration == EnforceRange) {
exceptionState.throwTypeError("Value is outside the 'unsigned long long' value range.");
return 0;
}
return result;
}
// Can the value be converted to a number?
V8TRYCATCH_EXCEPTION_RETURN(v8::Local<v8::Number>, numberObject, value->ToNumber(), exceptionState, 0);
if (numberObject.IsEmpty()) {
exceptionState.throwTypeError("Not convertible to a number value (of type 'unsigned long long'.)");
return 0;
}
double x = numberObject->Value();
if (configuration == EnforceRange)
return enforceRange(x, 0, kJSMaxInteger, "unsigned long long", exceptionState);
// Does the value convert to nan or to an infinity?
if (std::isnan(x) || std::isinf(x))
return 0;
// NaNs and +/-Infinity should be 0, otherwise modulo 2^64.
unsigned long long integer;
doubleToInteger(x, integer);
return integer;
}
uint64_t toUInt64(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, bool& ok)
{
ok = true;
// Fast case. The value is a 32-bit unsigned integer.
if (value->IsUint32())
return value->Uint32Value();
// Fast case. The value is a 32-bit integer.
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= 0)
return result;
if (configuration == EnforceRange) {
ok = false;
return 0;
}
return result;
}
// Can the value be converted to a number?
v8::Local<v8::Number> numberObject = value->ToNumber();
if (numberObject.IsEmpty()) {
ok = false;
return 0;
}
double x = numberObject->Value();
if (configuration == EnforceRange)
return enforceRange(x, 0, kJSMaxInteger, ok);
// NaNs and +/-Infinity should be 0, otherwise modulo 2^64.
unsigned long long integer;
doubleToInteger(x, integer);
return integer;
}
static inline T toSmallerUInt(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, const char* typeName, ExceptionState& exceptionState)
{
typedef IntTypeLimits<T> LimitsTrait;
// Fast case. The value is a 32-bit signed integer - possibly positive?
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= 0 && result <= LimitsTrait::maxValue)
return static_cast<T>(result);
if (configuration == EnforceRange) {
exceptionState.throwTypeError("Value is outside the '" + String(typeName) + "' value range.");
return 0;
}
return static_cast<T>(result);
}
// Can the value be converted to a number?
V8TRYCATCH_EXCEPTION_RETURN(v8::Local<v8::Number>, numberObject, value->ToNumber(), exceptionState, 0);
if (numberObject.IsEmpty()) {
exceptionState.throwTypeError("Not convertible to a number value (of type '" + String(typeName) + "'.");
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), 0, LimitsTrait::maxValue, typeName, exceptionState);
// Does the value convert to nan or to an infinity?
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue) || !numberValue)
return 0;
if (configuration == Clamp)
return clampTo<T>(numberObject->Value());
numberValue = numberValue < 0 ? -floor(fabs(numberValue)) : floor(fabs(numberValue));
return static_cast<T>(fmod(numberValue, LimitsTrait::numberOfValues));
}
static inline T toSmallerInt(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, bool& ok)
{
typedef IntTypeLimits<T> LimitsTrait;
ok = true;
// Fast case. The value is already a 32-bit integer in the right range.
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= LimitsTrait::minValue && result <= LimitsTrait::maxValue)
return static_cast<T>(result);
if (configuration == EnforceRange) {
ok = false;
return 0;
}
result %= LimitsTrait::numberOfValues;
return static_cast<T>(result > LimitsTrait::maxValue ? result - LimitsTrait::numberOfValues : result);
}
// Can the value be converted to a number?
v8::Local<v8::Number> numberObject = value->ToNumber();
if (numberObject.IsEmpty()) {
ok = false;
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), LimitsTrait::minValue, LimitsTrait::maxValue, ok);
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue) || !numberValue)
return 0;
numberValue = numberValue < 0 ? -floor(fabs(numberValue)) : floor(fabs(numberValue));
numberValue = fmod(numberValue, LimitsTrait::numberOfValues);
return static_cast<T>(numberValue > LimitsTrait::maxValue ? numberValue - LimitsTrait::numberOfValues : numberValue);
}
static inline T toSmallerInt(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, const char* typeName, ExceptionState& exceptionState)
{
typedef IntTypeLimits<T> LimitsTrait;
// Fast case. The value is already a 32-bit integer in the right range.
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= LimitsTrait::minValue && result <= LimitsTrait::maxValue)
return static_cast<T>(result);
if (configuration == EnforceRange) {
exceptionState.throwTypeError("Value is outside the '" + String(typeName) + "' value range.");
return 0;
}
result %= LimitsTrait::numberOfValues;
return static_cast<T>(result > LimitsTrait::maxValue ? result - LimitsTrait::numberOfValues : result);
}
// Can the value be converted to a number?
V8TRYCATCH_EXCEPTION_RETURN(v8::Local<v8::Number>, numberObject, value->ToNumber(), exceptionState, 0);
if (numberObject.IsEmpty()) {
exceptionState.throwTypeError("Not convertible to a number value (of type '" + String(typeName) + "'.");
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), LimitsTrait::minValue, LimitsTrait::maxValue, typeName, exceptionState);
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue) || !numberValue)
return 0;
numberValue = numberValue < 0 ? -floor(fabs(numberValue)) : floor(fabs(numberValue));
numberValue = fmod(numberValue, LimitsTrait::numberOfValues);
return static_cast<T>(numberValue > LimitsTrait::maxValue ? numberValue - LimitsTrait::numberOfValues : numberValue);
}
uint32_t toUInt32(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, bool& ok)
{
ok = true;
// Fast case. The value is already a 32-bit unsigned integer.
if (value->IsUint32())
return value->Uint32Value();
// Fast case. The value is a 32-bit signed integer - possibly positive?
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= 0)
return result;
if (configuration == EnforceRange) {
ok = false;
return 0;
}
return result;
}
// Can the value be converted to a number?
v8::Local<v8::Number> numberObject = value->ToNumber();
if (numberObject.IsEmpty()) {
ok = false;
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), 0, kMaxUInt32, ok);
// Does the value convert to nan or to an infinity?
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue))
return 0;
return numberObject->Uint32Value();
}
int32_t toInt32(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, bool& ok)
{
ok = true;
// Fast case. The value is already a 32-bit integer.
if (value->IsInt32())
return value->Int32Value();
// Can the value be converted to a number?
v8::Local<v8::Number> numberObject = value->ToNumber();
if (numberObject.IsEmpty()) {
ok = false;
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), kMinInt32, kMaxInt32, ok);
// Does the value convert to nan or to an infinity?
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue))
return 0;
return numberObject->Int32Value();
}
int8_t toInt8(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, bool& ok)
{
ok = true;
// Fast case. The value is already a 32-bit integer in the right range.
if (value->IsInt32()) {
int32_t result = value->Int32Value();
if (result >= kMinInt8 && result <= kMaxInt8)
return static_cast<int8_t>(result);
if (configuration == EnforceRange) {
ok = false;
return 0;
}
result %= 256; // 2^8.
return static_cast<int8_t>(result > kMaxInt8 ? result - 256 : result);
}
// Can the value be converted to a number?
v8::Local<v8::Number> numberObject = value->ToNumber();
if (numberObject.IsEmpty()) {
ok = false;
return 0;
}
if (configuration == EnforceRange)
return enforceRange(numberObject->Value(), kMinInt8, kMaxInt8, ok);
double numberValue = numberObject->Value();
if (std::isnan(numberValue) || std::isinf(numberValue) || !numberValue)
return 0;
numberValue = numberValue < 0 ? -floor(abs(numberValue)) : floor(abs(numberValue));
numberValue = fmod(numberValue, 256); // 2^8.
return static_cast<int8_t>(numberValue > kMaxInt8 ? numberValue - 256 : numberValue);
}
