/// <summary>
/// Creates a structurally equivalent collection type from a given type.
/// </summary>
/// <param name="type">The type to copy the structure of.</param>
/// <returns>A structurally equivalent copy of the given type.</returns>
public static IStonCollectionType Copy(IStonCollectionType type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
return(new StonCollectionType(type));
}
/// <summary>
/// Checks the validity of a given STON collection type.
/// </summary>
/// <param name="type">The type to check the validity of.</param>
public static void ValidateType(IStonCollectionType type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
if (type.ElementType == null)
{
throw new StonException("A collection type cannot have a non-existing element type.");
}
}
/// <summary>
/// Returns a hash code for a given collection type.
/// </summary>
/// <param name="obj">The collection type to get a hash code of.</param>
/// <returns>The hash code for the type.</returns>
public int GetHashCode(IStonCollectionType obj)
{
if (obj == null)
{
return(0);
}
int result = GetHashCode(obj.ElementType);
return((result << 7) ^ (result >> 25) ^ 0x12345678);
}
// writes a colleciton type
private void WriteType(StonTokenWriter writer, IStonCollectionType type)
{
if (type.ElementType is IStonUnionType)
{
writer.Write('<');
}
WriteType(writer, type.ElementType);
if (type.ElementType is IStonUnionType)
{
writer.Write('>');
}
writer.Write("[]");
}
/// <summary>
/// Determines whether two collection types are equivalent.
/// </summary>
/// <param name="x">The first collection type to compare.</param>
/// <param name="y">The second collection type to compare.</param>
/// <returns>True when types are equivalent, false otherwise.</returns>
public bool Equals(IStonCollectionType x, IStonCollectionType y)
{
if (x == y)
{
return(true);
}
else if (x == null || y == null)
{
return(false);
}
return(Equals(x.ElementType, y.ElementType));
}
/// <summary>
/// Creates a structurally equivalent collection type from a given type.
/// </summary>
/// <param name="type">The type to copy the structure of.</param>
public StonCollectionType(IStonCollectionType type)
: this(type.ElementType)
{
}