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C#: Add compile time constants for some types of fields in the stub generator.

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This commit is contained in:
Michael Nebel
2023-09-26 15:06:30 +02:00
parent d00ff9665c
commit 839ef7fef5
1 changed files with 31 additions and 1 deletions
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32
csharp/extractor/Semmle.Extraction.CSharp.StubGenerator/StubVisitor.cs
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@@ -296,6 +296,35 @@ internal sealed class StubVisitor : SymbolVisitor
private static string EscapeIdentifier(string identifier) =>
keywords.Contains(identifier) ? "@" + identifier : identifier;
private static bool TryGetConstantValue(IFieldSymbol symbol, out string value)
{
value = "";
if (!symbol.HasConstantValue)
{
return false;
}
var v = symbol.ConstantValue;
switch (symbol.Type.SpecialType)
{
case SpecialType.System_Boolean:
value = (bool)v ? "true" : "false";
return true;
case SpecialType.System_Byte:
case SpecialType.System_SByte:
case SpecialType.System_UInt16:
case SpecialType.System_UInt32:
case SpecialType.System_UInt64:
case SpecialType.System_Int16:
case SpecialType.System_Int32:
case SpecialType.System_Int64:
value = v.ToString()!;
return true;
default:
return false;
}
}
public override void VisitField(IFieldSymbol symbol)
{
if (IsNotPublic(symbol.DeclaredAccessibility))
@@ -325,7 +354,8 @@ internal sealed class StubVisitor : SymbolVisitor
stubWriter.Write(EscapeIdentifier(symbol.Name));
if (symbol.IsConst)
{
stubWriter.Write(" = default");
var v = TryGetConstantValue(symbol, out var value) ? value : "default";
stubWriter.Write($" = {v}");
}
stubWriter.WriteLine(";");
}