int64_t toInt64(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState)
{
// Fast case. The value is a 32-bit integer.
if (value->IsInt32())
return value->Int32Value();
// 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 'long long'.)");
return 0;
}
double x = numberObject->Value();
if (configuration == EnforceRange)
return enforceRange(x, -kJSMaxInteger, kJSMaxInteger, "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;
}
int64_t toInt64(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, bool& ok)
{
ok = true;
// Fast case. The value is 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;
}
double x = numberObject->Value();
if (configuration == EnforceRange)
return enforceRange(x, -kJSMaxInteger, kJSMaxInteger, ok);
// NaNs and +/-Infinity should be 0, otherwise modulo 2^64.
unsigned long long integer;
doubleToInteger(x, integer);
return integer;
}
bool DictionaryHelper::get(const Dictionary& dictionary, const String& key, unsigned long long& value)
{
v8::Local<v8::Value> v8Value;
if (!dictionary.get(key, v8Value))
return false;
double doubleValue;
if (!v8Call(v8Value->NumberValue(dictionary.v8Context()), doubleValue))
return false;
doubleToInteger(doubleValue, value);
return true;
}
bool Dictionary::get(const String& key, unsigned long long& value) const
{
v8::Local<v8::Value> v8Value;
if (!getKey(key, v8Value))
return false;
V8TRYCATCH_RETURN(v8::Local<v8::Number>, v8Number, v8Value->ToNumber(), false);
if (v8Number.IsEmpty())
return false;
double d = v8Number->Value();
doubleToInteger(d, value);
return true;
}
bool DictionaryHelper::get(const Dictionary& dictionary, const String& key, unsigned long long& value)
{
v8::Local<v8::Value> v8Value;
if (!dictionary.get(key, v8Value))
return false;
TONATIVE_DEFAULT(v8::Local<v8::Number>, v8Number, v8Value->ToNumber(), false);
if (v8Number.IsEmpty())
return false;
double d = v8Number->Value();
doubleToInteger(d, value);
return true;
}
void JSDictionary::convertValue(ExecState* exec, JSValue value, unsigned long long& result)
{
double d = value.toNumber(exec);
doubleToInteger(d, result);
}