private void EmitInvocationExpression(Expression expr, CompilationFlags flags)
{
InvocationExpression node = (InvocationExpression)expr;
// Optimization: inline code for literal lambda's directly
//
// This is worth it because otherwise we end up with an extra call
// to DynamicMethod.CreateDelegate, which is expensive.
//
if (node.LambdaOperand != null)
{
EmitInlinedInvoke(node, flags);
return;
}
expr = node.Expression;
if (typeof(LambdaExpression).IsAssignableFrom(expr.Type))
{
// if the invoke target is a lambda expression tree, first compile it into a delegate
expr = Expression.Call(expr, LambdaExpression.GetCompileMethod(expr.Type));
}
EmitMethodCall(expr, expr.Type.GetInvokeMethod(), node, CompilationFlags.EmitAsNoTail | CompilationFlags.EmitExpressionStart);
}