#include "config.h"
#if XPATH_SUPPORT
#include "XPathValue.h"
#include "Node.h"
#include <wtf/MathExtras.h>
#include <math.h>
namespace WebCore {
namespace XPath {
Value::Value()
: m_type(BooleanValue), m_bool(false)
{
}
Value::Value(Node* value)
: m_type(NodeVectorValue)
{
m_nodeVector.append(value);
}
Value::Value(const NodeVector& value)
: m_type(NodeVectorValue), m_nodeVector(value)
{
}
Value::Value(bool value)
: m_type(BooleanValue), m_bool(value)
{
}
Value::Value(unsigned value)
: m_type(NumberValue), m_number(value)
{
}
Value::Value(unsigned long value)
: m_type(NumberValue), m_number(value)
{
}
Value::Value(double value)
: m_type(NumberValue), m_number(value)
{
}
Value::Value(const String& value)
: m_type(StringValue), m_string(value)
{
}
const NodeVector &Value::toNodeVector() const
{
return m_nodeVector;
}
bool Value::toBoolean() const
{
switch (m_type) {
case NodeVectorValue:
return !m_nodeVector.isEmpty();
case BooleanValue:
return m_bool;
case NumberValue:
return m_number != 0;
case StringValue:
return !m_string.isEmpty();
}
ASSERT_NOT_REACHED();
return false;
}
double Value::toNumber() const
{
switch (m_type) {
case NodeVectorValue:
return Value(toString()).toNumber();
case NumberValue:
return m_number;
case StringValue: {
bool canConvert;
double value = m_string.deprecatedString().simplifyWhiteSpace().toDouble(&canConvert);
if (canConvert)
return value;
return NAN;
}
case BooleanValue:
return m_bool;
}
ASSERT_NOT_REACHED();
return 0.0;
}
String Value::toString() const
{
switch (m_type) {
case NodeVectorValue:
if (m_nodeVector.isEmpty())
return "";
return stringValue(m_nodeVector[0].get());
case StringValue:
return m_string;
case NumberValue:
if (isnan(m_number))
return "NaN";
if (m_number == 0)
return "0";
if (isinf(m_number))
return signbit(m_number) ? "-Infinity" : "Infinity";
return String::number(m_number);
case BooleanValue:
return m_bool ? "true" : "false";
}
ASSERT_NOT_REACHED();
return String();
}
}
}
#endif // XPATH_SUPPORT