private static string CreateCompilationErrorMessage([NotNull] EmitResult emitResult, [NotNull] SyntaxTree syntaxTree)
{
if (emitResult == null)
{
throw new ArgumentNullException(nameof(emitResult));
}
if (syntaxTree == null)
{
throw new ArgumentNullException(nameof(syntaxTree));
}
if (emitResult.Success)
{
throw new ArgumentException("EmitResult should contain failed compilation result.", nameof(emitResult));
}
var message = new StringBuilder()
.AppendLine("Compilation failed:");
foreach (var diagnostic in emitResult.Diagnostics.Where(item => item.Severity == DiagnosticSeverity.Error))
{
message
.Append(diagnostic.Id)
.Append(": ")
.AppendLine(diagnostic.GetMessage(CultureInfo.InvariantCulture));
}
var code = Formatter.Format(syntaxTree.GetRoot(), new AdhocWorkspace()).ToString();
message.AppendLine()
.AppendLine("Generated code:")
.AppendLine()
.AppendLine(code);
return(message.ToString());
}
/// <summary>
/// Save generated code as a string.
/// </summary>
/// <param name="cu">Generated code.</param>
/// <returns>Generated code as a string.</returns>
public string SaveCodeAsString(CompilationUnitSyntax cu)
{
if (cu == null)
{
throw new ArgumentNullException(nameof(cu));
}
var workspace = CreateWorkspace();
var formattedCode = Formatter.Format(cu, workspace);
return(formattedCode.ToFullString());
}
/// <summary>
/// Save generated code to a file.
/// </summary>
/// <param name="cu">Generated code.</param>
/// <param name="path">Full output path.</param>
public void SaveCodeToFile(CompilationUnitSyntax cu, string path)
{
if (cu == null)
{
throw new ArgumentNullException(nameof(cu));
}
if (string.IsNullOrEmpty(path))
{
throw new ArgumentException("Value cannot be null or empty.", nameof(path));
}
var workspace = CreateWorkspace();
var formattedCode = Formatter.Format(cu, workspace);
using (var sourceWriter = new StreamWriter(path))
{
formattedCode.WriteTo(sourceWriter);
}
}