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Редактировал(а) Alexandr Fokin 2025/05/13 13:04
От версии 2.12
отредактировано Alexandr Fokin
на 2025/05/13 13:04
на 2025/05/13 13:04
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К версии 2.11
отредактировано Alexandr Fokin
на 2025/05/13 13:02
на 2025/05/13 13:02
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... ... @@ -34,48 +34,46 @@ 34 34 public static ConstructorDelegate GetConstructorWithArgsDelegate( 35 35 ConstructorInfo constructorInfo) 36 36 { 37 - ParameterExpression constructorParameters = Expression.Parameter(typeof(object?[])); 38 - 39 - Expression[] parameterExpressions; 40 - { 41 - ParameterInfo[] parametersInfos = constructorInfo.GetParameters(); 42 - parameterExpressions = new Expression[parametersInfos.Length]; 43 - 44 - for (int i = 0; i < parametersInfos.Length; i++) 45 - { 46 - ConstantExpression ithIndex = Expression.Constant(i); 47 - BinaryExpression ithParameter = Expression.ArrayIndex( 48 - constructorParameters, 49 - ithIndex); 50 - UnaryExpression unboxedIthParameter = Expression.Convert( 51 - ithParameter, 52 - parametersInfos[i].ParameterType 37 +ParameterExpression constructorParameters = Expression.Parameter(typeof(object?[])); 38 + 39 +Expression[] parameterExpressions; 40 +{ 41 + ParameterInfo[] parametersInfos = constructorInfo.GetParameters(); 42 + parameterExpressions = new Expression[parametersInfos.Length]; 43 + 44 + for (int i = 0; i < parametersInfos.Length; i++) 45 + { 46 + ConstantExpression ithIndex = Expression.Constant(i); 47 + BinaryExpression ithParameter = Expression.ArrayIndex( 48 + constructorParameters, 49 + ithIndex); 50 + UnaryExpression unboxedIthParameter = Expression.Convert( 51 + ithParameter, 52 + parametersInfos[i].ParameterType 53 + ); 54 + parameterExpressions[i] = unboxedIthParameter; 55 + } 56 +} 57 + 58 +NewExpression constructorCallExp = Expression.New( 59 + constructorInfo, 60 + parameterExpressions); 61 + 62 +var convertResultExp = Expression.Convert( 63 + constructorCallExp, 64 + typeof(object) 53 53 ); 54 - parameterExpressions[i] = unboxedIthParameter; 55 - } 56 - } 57 - 58 - NewExpression constructorCallExp = Expression.New( 59 - constructorInfo, 60 - parameterExpressions); 61 - 62 - var convertResultExp = Expression.Convert( 63 - constructorCallExp, 64 - typeof(object) 65 - ); 66 - 67 - var constructorHandler = Expression 68 - .Lambda<ConstructorDelegate>( 69 - convertResultExp, 70 - constructorParameters 71 - ) 72 - .Compile(); 73 - 74 - return constructorHandler; 75 -}{{/code}}|{{code language="c#"}}object Func<object[]>{{/code}}((( 76 -C# Expression tree: object array to Expression.New() parameters 66 + 67 +var constructorHandler = Expression 68 + .Lambda<ConstructorDelegate>( 69 + convertResultExp, 70 + constructorParameters 71 + ) 72 + .Compile(); 73 + 74 +return constructorHandler; 75 +}{{/code}}|C# Expression tree: object array to Expression.New() parameters 77 77 [[https:~~/~~/stackoverflow.com/questions/67968927/c-sharp-expression-tree-object-array-to-expression-new-parameters>>https://stackoverflow.com/questions/67968927/c-sharp-expression-tree-object-array-to-expression-new-parameters]] 78 -))) 79 79 |{{code language="c#"}}public delegate object? MethodDelegate(object instance, object[]? Args); 80 80 81 81 public static MethodDelegate GetMethodWithArgsDelegate( ... ... @@ -82,53 +82,53 @@ 82 82 MethodInfo methodInfo, 83 83 Type instanceType) 84 84 { 85 - ParameterExpression instanceParameter = Expression.Parameter(typeof(object)); 86 - ParameterExpression methodParameters = Expression.Parameter(typeof(object?[])); 87 - 88 - Expression instanceExp; 89 - Expression[] parameterExpressions; 90 - { 91 - instanceExp = Expression.Convert(instanceParameter, instanceType); 92 - 93 - ParameterInfo[] parametersInfos = methodInfo.GetParameters(); 94 - parameterExpressions = new Expression[parametersInfos.Length]; 95 - 96 - for (int i = 0; i < parametersInfos.Length; i++) 97 - { 98 - ConstantExpression ithIndex = Expression.Constant(i); 99 - BinaryExpression ithParameter = Expression.ArrayIndex( 100 - methodParameters, 101 - ithIndex); 102 - UnaryExpression unboxedIthParameter = Expression.Convert( 103 - ithParameter, 104 - parametersInfos[i].ParameterType 83 +ParameterExpression instanceParameter = Expression.Parameter(typeof(object)); 84 +ParameterExpression methodParameters = Expression.Parameter(typeof(object?[])); 85 + 86 +Expression instanceExp; 87 +Expression[] parameterExpressions; 88 +{ 89 + instanceExp = Expression.Convert(instanceParameter, instanceType); 90 + 91 + ParameterInfo[] parametersInfos = methodInfo.GetParameters(); 92 + parameterExpressions = new Expression[parametersInfos.Length]; 93 + 94 + for (int i = 0; i < parametersInfos.Length; i++) 95 + { 96 + ConstantExpression ithIndex = Expression.Constant(i); 97 + BinaryExpression ithParameter = Expression.ArrayIndex( 98 + methodParameters, 99 + ithIndex); 100 + UnaryExpression unboxedIthParameter = Expression.Convert( 101 + ithParameter, 102 + parametersInfos[i].ParameterType 103 + ); 104 + parameterExpressions[i] = unboxedIthParameter; 105 + } 106 +} 107 + 108 +var callExpression = Expression.Call( 109 + instanceExp, 110 + methodInfo, 111 + parameterExpressions 105 105 ); 106 - parameterExpressions[i] = unboxedIthParameter; 107 - } 108 - } 109 - 110 - var callExpression = Expression.Call( 111 - instanceExp, 112 - methodInfo, 113 - parameterExpressions 114 - ); 115 - 116 - var convertResultExp = Expression.Convert( 117 - callExpression, 118 - typeof(object) 119 - ); 120 - 121 - var callHandler = Expression 122 - .Lambda<MethodDelegate>( 123 - convertResultExp, 124 - instanceParameter, 125 - methodParameters 126 - ) 127 - .Compile(); 128 - 129 - return callHandler; 130 -}{{/code}}|{{code language="c#"}}object? Func<object, object[]>{{/code}} 131 131 114 +var convertResultExp = Expression.Convert( 115 + callExpression, 116 + typeof(object) 117 + ); 118 + 119 +var callHandler = Expression 120 + .Lambda<MethodDelegate>( 121 + convertResultExp, 122 + instanceParameter, 123 + methodParameters 124 + ) 125 + .Compile(); 126 + 127 +return callHandler; 128 +}{{/code}}| 129 + 132 132 133 133 ))) 134 134 |(% style="width:394px" %)[[Generic enum to int>>doc:.Generic enum to int.WebHome]]|(% style="width:1090px" %)