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*
* Copyright (c) Microsoft Corporation.
*
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* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Microsoft Public License, please send an email to
* dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Microsoft Public License.
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* You must not remove this notice, or any other, from this software.
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using System.Dynamic.Utils;
namespace System.Dynamic {
///
/// Represents the convert dynamic operation at the call site, providing the binding semantic and the details about the operation.
///
public abstract class ConvertBinder : DynamicMetaObjectBinder {
private readonly Type _type;
private readonly bool _explicit;
///
/// Initializes a new intsance of the .
///
/// The type to convert to.
/// true if the conversion should consider explicit conversions; otherwise, false.
protected ConvertBinder(Type type, bool @explicit) {
ContractUtils.RequiresNotNull(type, "type");
_type = type;
_explicit = @explicit;
}
///
/// The type to convert to.
///
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1721:PropertyNamesShouldNotMatchGetMethods")]
public Type Type {
get {
return _type;
}
}
///
/// Gets the value indicating if the conversion should consider explicit conversions.
///
public bool Explicit {
get {
return _explicit;
}
}
///
/// Performs the binding of the dynamic convert operation if the target dynamic object cannot bind.
///
/// The target of the dynamic convert operation.
/// The representing the result of the binding.
public DynamicMetaObject FallbackConvert(DynamicMetaObject target) {
return FallbackConvert(target, null);
}
///
/// When overridden in the derived class, performs the binding of the dynamic convert operation if the target dynamic object cannot bind.
///
/// The target of the dynamic convert operation.
/// The binding result to use if binding fails, or null.
/// The representing the result of the binding.
public abstract DynamicMetaObject FallbackConvert(DynamicMetaObject target, DynamicMetaObject errorSuggestion);
///
/// Performs the binding of the dynamic convert operation.
///
/// The target of the dynamic convert operation.
/// An array of arguments of the dynamic convert operation.
/// The representing the result of the binding.
public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args) {
ContractUtils.RequiresNotNull(target, "target");
ContractUtils.Requires(args == null || args.Length == 0, "args");
return target.BindConvert(this);
}
// this is a standard DynamicMetaObjectBinder
internal override sealed bool IsStandardBinder {
get {
return true;
}
}
///
/// The result type of the operation.
///
public override sealed Type ReturnType {
get { return _type; }
}
}
}