| static private GetFunctionCallBinder ( string name, int argsCount, bool isStatic = true ) : System.Runtime.CompilerServices.CallSiteBinder | ||
| name | string | |
| argsCount | int | |
| isStatic | bool | |
| return | System.Runtime.CompilerServices.CallSiteBinder | |
private static CallSiteBinder GetFunctionCallBinder(IList <ParseNode> nodes, int argCount, bool isStatic)
{
var funcText = nodes[0].Token.Text;
Debug.Assert(funcText.Length >= 2 && funcText.EndsWith("("));
var funcName = funcText.Substring(0, funcText.Length - 1);
if (isStatic)
{
funcName = funcName.ToUpperInvariant();
}
return(DLRUtil.GetFunctionCallBinder(funcName, argCount, isStatic));
}
private static Expression GetPowerAST(IList <ParseNode> nodes, int start, Expression context)
{
//Have to rewrite power expressions to Math.Pow function calls because C# runtime does not support the ^ operator like VB
//a^b^c is rewritten as Math.Pow(Math.Pow(a, b), c) and calculated as (a^b)^c
Debug.Assert(nodes.Count >= 3 && nodes.Count % 2 == 1);
return(start == 0
? nodes[start].GetAST(context)
: Expression.Dynamic(DLRUtil.GetFunctionCallBinder("Pow", 2),
typeof(object),
Expression.Constant(typeof(Math)),
GetPowerAST(nodes, start - 2, context),
nodes[start].GetAST(context)));
}