private static AstGetSet _prepareMacro(MacroContext context,
AstExpr macroSpec, AstExpr call, AstExpr justEffect,
IEnumerable<AstExpr> args)
{
var getContext = context.Factory.IndirectCall(context.Invocation.Position,
context.Factory.Call(context.Invocation.Position,
EntityRef.Variable.Local.Create(
MacroAliases.ContextAlias)));
var prepareCall =
context.CreateExpand(EntityRef.MacroCommand.Create(CallMacroPerform.PartialCallMacroPerform.Alias));
prepareCall.Arguments.Add(macroSpec);
prepareCall.Arguments.Add(getContext);
prepareCall.Arguments.Add(call);
prepareCall.Arguments.Add(justEffect);
prepareCall.Arguments.AddRange(args);
return prepareCall;
}