public static CodeCompileUnit Demo1()
{
// evaluates a simple expression
var res = new CodeDomResolver();
Console.WriteLine(res.Evaluate(SlangParser.ParseExpression("5*4-7")));
// takes this file and get a codedom from it
var ccu = SlangParser.ReadCompileUnitFrom("..\\..\\Demo1.cs");
ccu.ReferencedAssemblies.Add("CodeDomGoKit.dll");
ccu.ReferencedAssemblies.Add(typeof(CodeObject).Assembly.GetName().ToString());
// now patch the parsed codedom so it's correct
// NOTE: slang can't actually bind to this because it is a paramarray method
// but we don't care here because it's not necessary. Slang only binds to what
// it needs to and we never need the return type anyway (which is void)
SlangPatcher.Patch(ccu);
// now write it out in VB
Console.WriteLine(CodeDomUtility.ToString(ccu, "vb"));
// return the code we generated so we can use it for other demos
// yay recycling
Console.WriteLine("Press any key...");
Console.ReadKey();
Console.Clear();
return(ccu);
}
static void Demo()
{
// note that in the real world cases, you'd need to use SlangPatcher.Patch()
// on whole compile units to get proper codedom objects back. This method is
// simply "close enough for government work" and may not work for languages
// other than VB
while (true)
{
Console.Write("Slang>");
var s = Console.ReadLine();
if (null != s)
{
s = s.Trim();
}
if (string.IsNullOrEmpty(s))
{
break;
}
var isStatement = s.EndsWith(";") || s.EndsWith("}");
CodeObject co = null;
try
{
if (isStatement)
{
co = SlangParser.ParseStatement(s, true);
}
else
{
co = SlangParser.ParseExpression(s);
}
}
catch (SlangSyntaxException ex)
{
Console.WriteLine("Error: " + ex.Message);
}
if (null != co)
{
var ccu = _RootCode(co);
try
{
SlangPatcher.Patch(ccu);
}
catch (Exception ex)
{
Console.WriteLine("Warning: Error resolving code - " + ex.Message);
}
var tc = new CodeDomTypeConverter();
var item = (ccu.Namespaces[0].Types[0].Members[0] as CodeMemberMethod).Statements[0];
if (!isStatement)
{
co = item;
var es = item as CodeExpressionStatement;
if (null != es)
{
co = es.Expression;
}
}
else
{
co = item;
}
s = CodeDomUtility.ToString(co);
s = s.Trim();
Console.Write("C#: ");
Console.WriteLine(s);
s = CodeDomUtility.ToString(co, "vb");
s = s.Trim();
Console.Write("VB: ");
Console.WriteLine(s);
s = CodeDomUtility.ToString(CodeDomUtility.Literal(co, tc));
s = s.Trim();
Console.Write("CodeDom: ");
Console.WriteLine(s);
if (null != SlangPatcher.GetNextUnresolvedElement(ccu))
{
Console.WriteLine("Warning: Not all of the code could be resolved.");
}
}
}
}
