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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.Core.Link
{
using System;
using System.Collections.Generic;
using System.Linq;
using WixToolset.Data;
using WixToolset.Extensibility.Services;
internal class FindEntrySectionAndLoadSymbolsCommand
{
public FindEntrySectionAndLoadSymbolsCommand(IMessaging messaging, IEnumerable<IntermediateSection> sections)
{
this.Messaging = messaging;
this.Sections = sections;
}
private IMessaging Messaging { get; }
private IEnumerable<IntermediateSection> Sections { get; }
/// <summary>
/// Sets the expected entry output type, based on output file extension provided to the linker.
/// </summary>
public OutputType ExpectedOutputType { private get; set; }
/// <summary>
/// Gets the located entry section after the command is executed.
/// </summary>
public IntermediateSection EntrySection { get; private set; }
/// <summary>
/// Gets the collection of loaded symbols.
/// </summary>
public IDictionary<string, Symbol> Symbols { get; private set; }
/// <summary>
/// Gets the collection of possibly conflicting symbols.
/// </summary>
public IEnumerable<Symbol> PossiblyConflictingSymbols { get; private set; }
public void Execute()
{
Dictionary<string, Symbol> symbols = new Dictionary<string, Symbol>();
HashSet<Symbol> possibleConflicts = new HashSet<Symbol>();
if (!Enum.TryParse(this.ExpectedOutputType.ToString(), out SectionType expectedEntrySectionType))
{
expectedEntrySectionType = SectionType.Unknown;
}
foreach (var section in this.Sections)
{
// Try to find the one and only entry section.
if (SectionType.Product == section.Type || SectionType.Module == section.Type || SectionType.PatchCreation == section.Type || SectionType.Patch == section.Type || SectionType.Bundle == section.Type)
{
// TODO: remove this?
//if (SectionType.Unknown != expectedEntrySectionType && section.Type != expectedEntrySectionType)
//{
// string outputExtension = Output.GetExtension(this.ExpectedOutputType);
// this.Messaging.Write(WixWarnings.UnexpectedEntrySection(section.SourceLineNumbers, section.Type.ToString(), expectedEntrySectionType.ToString(), outputExtension));
//}
if (null == this.EntrySection)
{
this.EntrySection = section;
}
else
{
this.Messaging.Write(ErrorMessages.MultipleEntrySections(this.EntrySection.Tuples.FirstOrDefault()?.SourceLineNumbers, this.EntrySection.Id, section.Id));
this.Messaging.Write(ErrorMessages.MultipleEntrySections2(section.Tuples.FirstOrDefault()?.SourceLineNumbers));
}
}
// Load all the symbols from the section's tables that create symbols.
foreach (var row in section.Tuples.Where(t => t.Id != null))
{
var symbol = new Symbol(section, row);
if (!symbols.TryGetValue(symbol.Name, out var existingSymbol))
{
symbols.Add(symbol.Name, symbol);
}
else // uh-oh, duplicate symbols.
{
// If the duplicate symbols are both private directories, there is a chance that they
// point to identical tuples. Identical directory tuples are redundant and will not cause
// conflicts.
if (AccessModifier.Private == existingSymbol.Access && AccessModifier.Private == symbol.Access &&
TupleDefinitionType.Directory == existingSymbol.Row.Definition.Type && existingSymbol.Row.IsIdentical(symbol.Row))
{
// Ensure identical symbol's tuple is marked redundant to ensure (should the tuple be
// referenced into the final output) it will not add duplicate primary keys during
// the .IDT importing.
//symbol.Row.Redundant = true; - TODO: remove this
existingSymbol.AddRedundant(symbol);
}
else
{
existingSymbol.AddPossibleConflict(symbol);
possibleConflicts.Add(existingSymbol);
}
}
}
}
this.Symbols = symbols;
this.PossiblyConflictingSymbols = possibleConflicts;
}
}
}
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