mirror of
https://github.com/zoriya/Kyoo.git
synced 2026-03-16 06:33:39 -04:00
52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
// Kyoo - A portable and vast media library solution.
|
|
// Copyright (c) Kyoo.
|
|
//
|
|
// See AUTHORS.md and LICENSE file in the project root for full license information.
|
|
//
|
|
// Kyoo is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// any later version.
|
|
//
|
|
// Kyoo is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Linq.Expressions;
|
|
|
|
namespace Kyoo.Utils;
|
|
|
|
public sealed class ExpressionArgumentReplacer : ExpressionVisitor
|
|
{
|
|
private readonly Dictionary<ParameterExpression, Expression> _mapping;
|
|
|
|
public ExpressionArgumentReplacer(Dictionary<ParameterExpression, Expression> dict)
|
|
{
|
|
_mapping = dict;
|
|
}
|
|
|
|
protected override Expression VisitParameter(ParameterExpression node)
|
|
{
|
|
if (_mapping.TryGetValue(node, out Expression? mappedArgument))
|
|
return Visit(mappedArgument);
|
|
return base.VisitParameter(node);
|
|
}
|
|
|
|
public static Expression ReplaceParams(
|
|
Expression expression,
|
|
IEnumerable<ParameterExpression> epxParams,
|
|
params ParameterExpression[] param
|
|
)
|
|
{
|
|
ExpressionArgumentReplacer replacer =
|
|
new(epxParams.Zip(param).ToDictionary(x => x.First, x => x.Second as Expression));
|
|
return replacer.Visit(expression);
|
|
}
|
|
}
|