public static void VerifyExpression(LanguageType lang, string nativeExpr, string managedExpr, string managedType, NativeSymbolBag bag)
{
bag = bag ?? new NativeSymbolBag();
CodeTransform trans = new CodeTransform(lang, bag);
NativeValueExpression nExpr = new NativeValueExpression(nativeExpr);
CodeExpression cExpr = null;
CodeTypeReference codeType = null;
Exception ex = null;
Assert.True(trans.TryGenerateValueExpression(nExpr, out cExpr, out codeType, out ex));
var provider = default(System.CodeDom.Compiler.CodeDomProvider);
switch (lang)
{
case LanguageType.CSharp:
provider = new Microsoft.CSharp.CSharpCodeProvider();
break;
case LanguageType.VisualBasic:
provider = new Microsoft.VisualBasic.VBCodeProvider();
break;
default:
provider = null;
break;
}
Assert.NotNull(provider);
using (var writer = new StringWriter())
{
provider.GenerateCodeFromExpression(cExpr, writer, new System.CodeDom.Compiler.CodeGeneratorOptions());
Assert.Equal(managedExpr, writer.ToString());
}
if (managedType != null)
{
Assert.Equal(managedType, CodeDomPrinter.Convert(codeType));
}
}
