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Extract region directives

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This commit is contained in:
Tamas Vajk
2021-01-20 11:07:24 +01:00
parent fe0a494bab
commit a5d18f9b68
8 changed files with 133 additions and 1 deletions
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23
csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/EndRegionDirective.cs Normal file
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@@ -0,0 +1,23 @@
using Microsoft.CodeAnalysis.CSharp.Syntax;
using System.IO;
namespace Semmle.Extraction.CSharp.Entities
{
internal class EndRegionDirective : PreprocessorDirective<EndRegionDirectiveTriviaSyntax>
{
public EndRegionDirective(Context cx, EndRegionDirectiveTriviaSyntax trivia)
: base(cx, trivia)
{
}
protected override void PopulatePreprocessor(TextWriter trapFile)
{
trapFile.directive_endregions(this);
}
internal static void WriteRegionBlock(Context cx, RegionDirective region, EndRegionDirective endregion)
{
cx.TrapWriter.Writer.regions(region, endregion);
}
}
}

18
csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/RegionDirective.cs Normal file
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@@ -0,0 +1,18 @@
using Microsoft.CodeAnalysis.CSharp.Syntax;
using System.IO;
namespace Semmle.Extraction.CSharp.Entities
{
internal class RegionDirective : PreprocessorDirective<RegionDirectiveTriviaSyntax>
{
public RegionDirective(Context cx, RegionDirectiveTriviaSyntax trivia)
: base(cx, trivia)
{
}
protected override void PopulatePreprocessor(TextWriter trapFile)
{
trapFile.directive_regions(this, trivia.EndOfDirectiveToken.LeadingTrivia.ToString());
}
}
}

23
csharp/extractor/Semmle.Extraction.CSharp/Populators/DirectiveVisitor.cs
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@@ -1,3 +1,5 @@
using System.Collections.Generic;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
@@ -52,5 +54,26 @@ namespace Semmle.Extraction.CSharp.Populators
{
new Entities.LineDirective(cx, node);
}
private readonly Stack<Entities.RegionDirective> regionStarts = new Stack<Entities.RegionDirective>();
public override void VisitRegionDirectiveTrivia(RegionDirectiveTriviaSyntax node)
{
var region = new Entities.RegionDirective(cx, node);
regionStarts.Push(region);
}
public override void VisitEndRegionDirectiveTrivia(EndRegionDirectiveTriviaSyntax node)
{
var endregion = new Entities.EndRegionDirective(cx, node);
if (regionStarts.Count == 0)
{
cx.ExtractionError("Couldn't find start region", null,
Extraction.Entities.Location.Create(cx, node.GetLocation()), null, Util.Logging.Severity.Warning);
return;
}
var start = regionStarts.Pop();
Entities.EndRegionDirective.WriteRegionBlock(cx, start, endregion);
}
}
}

15
csharp/extractor/Semmle.Extraction.CSharp/Tuples.cs
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@@ -655,5 +655,20 @@ namespace Semmle.Extraction.CSharp
{
trapFile.WriteTuple("directive_line_values", directive, line, file);
}
internal static void directive_regions(this TextWriter trapFile, RegionDirective directive, string name)
{
trapFile.WriteTuple("directive_regions", directive, name);
}
internal static void directive_endregions(this TextWriter trapFile, EndRegionDirective directive)
{
trapFile.WriteTuple("directive_endregions", directive);
}
internal static void regions(this TextWriter trapFile, RegionDirective start, EndRegionDirective end)
{
trapFile.WriteTuple("regions", start, end);
}
}
}