private static AssemblyAttribute ExtractAttributeFromItem(ITaskItem item)
{
var type = item.ItemSpec;
// Some attributes only allow positional constructor arguments, or the user may just prefer them.
// To set those, use metadata names like "_Parameter1", "_Parameter2" etc.
// If a parameter index is skipped, it's an error.
var customMetadata = item.CloneCustomMetadata() ?? new Dictionary <string, string>();
var orderedParameters = new List <object?>(customMetadata.Count + 1 /* max possible slots needed */);
var namedParameters = new Dictionary <string, object?>();
foreach (var customMetadataEntry in customMetadata)
{
if (customMetadataEntry is not DictionaryEntry entry)
{
continue;
}
var name = (string)entry.Key;
var valueStr = (string?)entry.Value;
if (!CodeGeneratorConfigurationUtility.TryParseConstantValue(valueStr, out var value))
{
throw new BuildErrorException(Strings.LiteralAssemblyAttributes.InvalidParameterValueFmt, name);
}
if (name.StartsWith("_Parameter", StringComparison.OrdinalIgnoreCase))
{
if (!int.TryParse(name["_Parameter".Length..], out var index))
private static Constant ExtractConstantDefinitionFromItem(ITaskItem item)
{
var name = item.ItemSpec.Trim();
var valueStr = item.GetMetadata("Value")?.Trim() ?? "<null>";
if (!CodeGeneratorConfigurationUtility.TryParseConstantValue(valueStr, out var value))
{
throw new BuildErrorException(Strings.ThisAssemblyClass.InvalidConstantValueFmt, name, valueStr);
}
return(new Constant(name, value));
}
protected sealed override void Run()
{
if (!CodeGeneratorConfigurationUtility.TryParseLanguage(Language, out var codeGeneratorLanguage))
{
throw new BuildErrorException(Strings.UnsupportedLanguageFmt, Language ?? "<null>");
}
if (StringUtility.IsNullOrEmpty(OutputPath))
{
throw new BuildErrorException(Strings.MissingParameterFmt, nameof(OutputPath));
}
var generatedCode = new GeneratedCode(codeGeneratorLanguage, GetCodeFragments());
var code = CodeGenerator.GenerateCode(generatedCode);
File.WriteAllText(OutputPath, code, Encoding.UTF8);
}
public void GenerateCode_ReturnsNonEmptyString(string languageStr)
{
var assemblyAttribute = new AssemblyAttribute(
"System.Runtime.InteropServices.ComVisible",
new[] { new OrderedParameter(false) });
var thisAssemblyClass = new ThisAssemblyClass(
null,
"ThisAssembly",
new[] { new Constant("Answer", 42) });
_ = CodeGeneratorConfigurationUtility.TryParseLanguage(languageStr, out var language);
var configuration = new GeneratedCode(
language,
new CodeFragment[] { assemblyAttribute, thisAssemblyClass });
var code = CodeGenerator.GenerateCode(configuration);
Assert.IsNotNull(code);
Assert.IsNotEmpty(code);
}
