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85 changes: 85 additions & 0 deletions
85
src/NSubstitute.Analyzers.Shared/DiagnosticAnalyzers/Substitute.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using Microsoft.CodeAnalysis; | ||
| using Microsoft.CodeAnalysis.Operations; | ||
| using NSubstitute.Analyzers.Shared.Extensions; | ||
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|
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| namespace NSubstitute.Analyzers.Shared.DiagnosticAnalyzers; | ||
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| internal class Substitute | ||
| { | ||
| private readonly IReadOnlyList<IArgumentOperation> _argumentOperations; | ||
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| public IReadOnlyList<ITypeSymbol> ArgumentsTypeSymbols { get; } | ||
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| private Substitute( | ||
| IInvocationOperation? invocationOperation, | ||
| IPropertyReferenceOperation? propertyReferenceOperation) | ||
| { | ||
| var argumentOperations = invocationOperation?.Arguments ?? propertyReferenceOperation?.Arguments ?? | ||
| throw new ArgumentNullException(nameof(invocationOperation), $"Both {nameof(invocationOperation)} and {nameof(propertyReferenceOperation)} are null"); | ||
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| _argumentOperations = argumentOperations.OrderBy(argOperation => argOperation.Parameter.Ordinal).ToList(); | ||
| var typeSymbols = _argumentOperations.Select(argOperation => argOperation.GetTypeSymbol()).ToList(); | ||
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| // when property has a setter, we might have one more call argument than parameters in property/indexer | ||
| // depending on whether value is set as a part of substitute or not | ||
| // as we cant easily determine if value was set or not, we assume it was set in order not to report false positives | ||
| if (propertyReferenceOperation?.Property.SetMethod != null) | ||
| { | ||
| typeSymbols.Add(propertyReferenceOperation.Property.Type); | ||
| } | ||
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| ArgumentsTypeSymbols = typeSymbols; | ||
| } | ||
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| public static Substitute? TryCreate(IOperation operation) | ||
| { | ||
| var actualOperation = GetActualOperation(operation); | ||
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| if (actualOperation == null) | ||
| { | ||
| return null; | ||
| } | ||
|
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| return new Substitute( | ||
| actualOperation.Value.InvocationOperation, | ||
| actualOperation.Value.PropertyReferenceOperation); | ||
| } | ||
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| public bool HasArgumentAt(int position) => position >= 0 && position <= ArgumentsTypeSymbols.Count - 1; | ||
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| public bool HasArgumentOperationAt(int position) => position >= 0 && position <= _argumentOperations.Count - 1; | ||
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| public ITypeSymbol GetArgumentTypeAt(int position) | ||
| { | ||
| if (position <= ArgumentsTypeSymbols.Count - 1) | ||
| { | ||
| return ArgumentsTypeSymbols[position]; | ||
| } | ||
|
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| throw new ArgumentException($"Could not find argument type at position {position}", nameof(position)); | ||
| } | ||
|
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| public IArgumentOperation GetArgumentOperationAt(int position) | ||
| { | ||
| if (position <= this._argumentOperations.Count - 1) | ||
| { | ||
| return this._argumentOperations[position]; | ||
| } | ||
|
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| throw new ArgumentException($"Could not find argument at position {position}", nameof(position)); | ||
| } | ||
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| private static (IPropertyReferenceOperation? PropertyReferenceOperation, IInvocationOperation? InvocationOperation)? GetActualOperation(IOperation substituteOperation) | ||
| { | ||
| return substituteOperation switch | ||
| { | ||
| IInvocationOperation invocationOperation => (null, invocationOperation), | ||
| IPropertyReferenceOperation propertyReferenceOperation => (PropertyReferenceOperation: propertyReferenceOperation, null), | ||
| IConversionOperation conversionOperation => GetActualOperation(conversionOperation.Operand), | ||
| _ => null | ||
| }; | ||
| } | ||
| } |
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