public void Execute(GeneratorExecutionContext context)
{
var fullSyntaxPath = context.AdditionalFiles[0].Path;
FileStream fs = null;
try
{
fs = File.OpenRead(fullSyntaxPath);
}
catch (Exception ex) when(ex is DirectoryNotFoundException || ex is FileNotFoundException)
{
var fnf = Diagnostic.Create("SCG_FileNotFound", "SyntaxCodeGenerator", $"The syntax file at {fullSyntaxPath} was not found.", DiagnosticSeverity.Error, DiagnosticSeverity.Error, true, 0);
context.ReportDiagnostic(fnf);
return;
}
using (fs)
{
var reader = XmlReader.Create(fs, new XmlReaderSettings {
DtdProcessing = DtdProcessing.Prohibit
});
var serializer = new XmlSerializer(typeof(Tree));
Tree tree = (Tree)serializer.Deserialize(reader);
context.CancellationToken.ThrowIfCancellationRequested();
var stringBuilder = new StringBuilder();
var writer = new StringWriter(stringBuilder);
SourceWriter.WriteAll(writer, tree);
context.AddSource("Syntax.generated.cs", stringBuilder.ToString());
}
}
public Task <RichGenerationResult> GenerateRichAsync(TransformationContext context, IProgress <Diagnostic> progress, CancellationToken cancellationToken)
{
var fullSyntaxPath = Path.Combine(context.ProjectDirectory, _syntaxFile);
FileStream fs = null;
try
{
fs = File.OpenRead(fullSyntaxPath);
}
catch (Exception ex) when(ex is DirectoryNotFoundException || ex is FileNotFoundException)
{
var fnf = Diagnostic.Create("SCG_FileNotFound", "SyntaxCodeGenerator", $"The syntax file at {fullSyntaxPath} was not found.", DiagnosticSeverity.Error, DiagnosticSeverity.Error, true, 0);
progress.Report(fnf);
throw;
}
using (fs)
{
var reader = XmlReader.Create(fs, new XmlReaderSettings {
DtdProcessing = DtdProcessing.Prohibit
});
var serializer = new XmlSerializer(typeof(Tree));
Tree tree = (Tree)serializer.Deserialize(reader);
cancellationToken.ThrowIfCancellationRequested();
var stringBuilder = new StringBuilder();
var writer = new StringWriter(stringBuilder);
SourceWriter.WriteAll(writer, tree);
var syntaxTree = CSharpSyntaxTree.ParseText(stringBuilder.ToString(), cancellationToken: cancellationToken);
var root = syntaxTree.GetCompilationUnitRoot();
var rgr = new RichGenerationResult
{
Usings = root.Usings,
Members = root.Members
};
return(Task.FromResult(rgr));
}
}
