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Merge pull request #7577 from michaelnebel/csharp/line-pragma

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C#: Make support for Line span pragma
This commit is contained in:
Michael Nebel
2022-01-20 09:51:57 +01:00
committed by GitHub
parent 70f4efb834 d7cd1cf0b9
commit 547f492be0
19 changed files with 10406 additions and 1608 deletions
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28
csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/LineDirective.cs
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@@ -5,36 +5,28 @@ using System.IO;
namespace Semmle.Extraction.CSharp.Entities
{
internal class LineDirective : PreprocessorDirective<LineDirectiveTriviaSyntax>
internal class LineDirective : LineOrSpanDirective<LineDirectiveTriviaSyntax>
{
private LineDirective(Context cx, LineDirectiveTriviaSyntax trivia)
: base(cx, trivia)
: base(cx, trivia, trivia.Line.Kind() switch
{
SyntaxKind.DefaultKeyword => LineDirectiveKind.Default,
SyntaxKind.HiddenKeyword => LineDirectiveKind.Hidden,
SyntaxKind.NumericLiteralToken => LineDirectiveKind.Numeric,
_ => throw new InternalError(trivia, "Unhandled line token kind")
})
{
}
protected override void PopulatePreprocessor(TextWriter trapFile)
{
var type = Symbol.Line.Kind() switch
{
SyntaxKind.DefaultKeyword => 0,
SyntaxKind.HiddenKeyword => 1,
SyntaxKind.NumericLiteralToken => 2,
_ => throw new InternalError(Symbol, "Unhandled line token kind")
};
trapFile.directive_lines(this, type);
if (Symbol.Line.IsKind(SyntaxKind.NumericLiteralToken))
{
var value = (int)Symbol.Line.Value!;
trapFile.directive_line_value(this, value);
if (!string.IsNullOrWhiteSpace(Symbol.File.ValueText))
{
var file = File.Create(Context, Symbol.File.ValueText);
trapFile.directive_line_file(this, file);
}
}
base.PopulatePreprocessor(trapFile);
}
public static LineDirective Create(Context cx, LineDirectiveTriviaSyntax line) =>

37
csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/LineOrSpanDirective.cs Normal file
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@@ -0,0 +1,37 @@
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using System.IO;
namespace Semmle.Extraction.CSharp.Entities
{
internal enum LineDirectiveKind
{
Default = 0,
Hidden = 1,
Numeric = 2,
Span = 3
}
internal abstract class LineOrSpanDirective<T> : PreprocessorDirective<T> where T : LineOrSpanDirectiveTriviaSyntax
{
private readonly LineDirectiveKind kind;
protected LineOrSpanDirective(Context cx, T trivia, LineDirectiveKind k)
: base(cx, trivia)
{
kind = k;
}
protected override void PopulatePreprocessor(TextWriter trapFile)
{
trapFile.directive_lines(this, kind);
if (!string.IsNullOrWhiteSpace(Symbol.File.ValueText))
{
var file = File.Create(Context, Symbol.File.ValueText);
trapFile.directive_line_file(this, file);
}
}
}
}

39
csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/LineSpanDirective.cs Normal file
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@@ -0,0 +1,39 @@
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using System.IO;
namespace Semmle.Extraction.CSharp.Entities
{
internal class LineSpanDirective : LineOrSpanDirective<LineSpanDirectiveTriviaSyntax>
{
private LineSpanDirective(Context cx, LineSpanDirectiveTriviaSyntax trivia)
: base(cx, trivia, LineDirectiveKind.Span) { }
public static LineSpanDirective Create(Context cx, LineSpanDirectiveTriviaSyntax line) =>
LineSpanDirectiveFactory.Instance.CreateEntity(cx, line, line);
protected override void PopulatePreprocessor(TextWriter trapFile)
{
var startLine = (int)Symbol.Start.Line.Value!;
var startColumn = (int)Symbol.Start.Character.Value!;
var endLine = (int)Symbol.End.Line.Value!;
var endColumn = (int)Symbol.End.Character.Value!;
trapFile.directive_line_span(this, startLine, startColumn, endLine, endColumn);
if (Symbol.CharacterOffset.Value is int offset)
{
trapFile.directive_line_offset(this, offset);
}
base.PopulatePreprocessor(trapFile);
}
private class LineSpanDirectiveFactory : CachedEntityFactory<LineSpanDirectiveTriviaSyntax, LineSpanDirective>
{
public static LineSpanDirectiveFactory Instance { get; } = new LineSpanDirectiveFactory();
public override LineSpanDirective Create(Context cx, LineSpanDirectiveTriviaSyntax init) => new(cx, init);
}
}
}