private static LNode CompileTimeMacro(string macroName, LNode node, IMacroContext context, bool alsoRuntime, bool wantPreprocess = true)
{
if (node.ArgCount != 1 || !node[0].Calls(S.Braces))
{
context.Error(node.Target, "{0} should have a single argument: a braced block.", macroName);
return(null);
}
LNodeList code = node[0].Args;
if (wantPreprocess)
{
if (context.Ancestors.Take(context.Ancestors.Count - 1).Any(
n => n.Name.IsOneOf(S.Class, S.Struct, S.Enum, S.Namespace) ||
n.Name.IsOneOf(S.Constructor, S.Fn, S.Property, S.Var)))
{
context.Error(node.Target, "{0} is designed for use only at the top level of the file. It will be executed as though it is at the top level: any outer scopes will be ignored.", macroName);
}
code = context.PreProcess(code);
}
WriteHeaderCommentInSessionLog(node, context.Sink);
// Remove namespace blocks (not supported by Roslyn scripting)
LNode namespaceBlock = null;
var codeSansNamespaces = code.RecursiveReplace(RemoveNamespaces);
LNodeList?RemoveNamespaces(LNode n)
{
if (EcsValidators.SpaceDefinitionKind(n, out _, out _, out LNode body) == S.Namespace)
{
namespaceBlock = n;
return(body.Args.RecursiveReplace(RemoveNamespaces));
}
return(null);
}
if (namespaceBlock != null && wantPreprocess)
{
context.Warning(namespaceBlock, "The C# scripting engine does not support namespaces. They will be ignored when running at compile time.");
}
RunCSharpCodeWithRoslyn(node, codeSansNamespaces, context);
_roslynSessionLog?.Flush();
return(alsoRuntime ? F.Splice(code) : F.Splice());
}