52 lines
2.4 KiB
C#
52 lines
2.4 KiB
C#
/*
|
|
BSD 3-Clause License
|
|
|
|
Copyright (c) 2017, B. Wofter
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation
|
|
and/or other materials provided with the distribution.
|
|
|
|
* Neither the name of the copyright holder nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
namespace BWofter.Converters.Expressions
|
|
{
|
|
using System;
|
|
using System.Linq.Expressions;
|
|
public sealed class TryParseExpression : DataExpression
|
|
{
|
|
public Expression InParameter { get; }
|
|
public Expression OutParameter { get; }
|
|
public override Type Type => boolType;
|
|
public Type TargetType { get; }
|
|
public TryParseExpression(Expression inParameter, Expression outParameter, Type type)
|
|
{
|
|
InParameter = inParameter ?? throw new ArgumentNullException(nameof(inParameter));
|
|
OutParameter = outParameter ?? throw new ArgumentNullException(nameof(outParameter));
|
|
TargetType = type ?? throw new ArgumentNullException(nameof(type));
|
|
}
|
|
public override Expression Reduce() =>
|
|
Call(TargetType.GetMethod("TryParse", new[] { stringType, TargetType.MakeByRefType() }), InParameter, OutParameter);
|
|
}
|
|
}
|