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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Link
{
using System.Collections.Generic;
using System.Linq;
using WixToolset.Data;
using WixToolset.Extensibility.Services;
public class ReportConflictingSymbolsCommand
{
public ReportConflictingSymbolsCommand(IMessaging messaging, IEnumerable<Symbol> possibleConflicts, IEnumerable<IntermediateSection> resolvedSections)
{
this.Messaging = messaging;
this.PossibleConflicts = possibleConflicts;
this.ResolvedSections = resolvedSections;
}
private IMessaging Messaging { get; }
private IEnumerable<Symbol> PossibleConflicts { get; }
private IEnumerable<IntermediateSection> ResolvedSections { get; }
public void Execute()
{
// Do a quick check if there are any possibly conflicting symbols that don't come from tables that allow
// overriding. Hopefully the symbols with possible conflicts list is usually very short list (empty should
// be the most common). If we find any matches, we'll do a more costly check to see if the possible conflicting
// symbols are in sections we actually referenced. From the resulting set, show an error for each duplicate
// (aka: conflicting) symbol. This should catch any rows with colliding primary keys (since symbols are based
// on the primary keys of rows).
var illegalDuplicates = this.PossibleConflicts.Where(s => s.Row.Definition.Type != TupleDefinitionType.WixAction && s.Row.Definition.Type != TupleDefinitionType.WixVariable).ToList();
if (0 < illegalDuplicates.Count)
{
var referencedSections = new HashSet<IntermediateSection>(this.ResolvedSections);
foreach (Symbol referencedDuplicateSymbol in illegalDuplicates.Where(s => referencedSections.Contains(s.Section)))
{
List<Symbol> actuallyReferencedDuplicateSymbols = referencedDuplicateSymbol.PossiblyConflictingSymbols.Where(s => referencedSections.Contains(s.Section)).ToList();
if (actuallyReferencedDuplicateSymbols.Any())
{
this.Messaging.Write(ErrorMessages.DuplicateSymbol(referencedDuplicateSymbol.Row.SourceLineNumbers, referencedDuplicateSymbol.Name));
foreach (Symbol duplicate in actuallyReferencedDuplicateSymbols)
{
this.Messaging.Write(ErrorMessages.DuplicateSymbol2(duplicate.Row.SourceLineNumbers));
}
}
}
}
}
}
}
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