/// <summary>
/// Evauate and run the function
/// </summary>
/// <returns></returns>
public object VisitFunctionCall(FunctionCallExpr expr)
{
object result = null;
// CASE 1: Exp is variable -> internal/external script. "getuser()".
if (expr.NameExp.IsNodeType(NodeTypes.SysVariable))
{
return(FunctionHelper.CallFunction(this.Ctx, expr, null, true, this));
}
// At this point, is a method call on an object.
var member = expr.NameExp.Evaluate(this);
result = member;
var isMemberAccessType = member is MemberAccess;
if (!isMemberAccessType)
{
return(result);
}
var callStackName = expr.NameExp.ToQualifiedName();
var maccess = member as MemberAccess;
if (!IsMemberCall(maccess))
{
return(result);
}
this.Ctx.State.Stack.Push(callStackName, expr);
// CASE 2: Module.Function
if (maccess.Mode == MemberMode.FunctionScript && maccess.Expr != null)
{
var fexpr = maccess.Expr as FunctionExpr;
var resolveParams = !expr.RetainEvaluatedParams;
result = FunctionHelper.CallFunctionInScript(this.Ctx, this, fexpr.Meta.Name, fexpr, expr.ParamListExpressions, expr.ParamList, resolveParams);
}
// CASE 3: object "." method call from script is a external/internal function e.g log.error -> external c# callback.
else if (maccess.IsInternalExternalFunctionCall())
{
result = FunctionHelper.CallFunction(Ctx, expr, maccess.FullMemberName, false, this);
}
// CASE 4: Method call / Property on Language types
else if (maccess.Type != null)
{
result = FunctionHelper.CallMemberOnBasicType(this.Ctx, expr, maccess, expr.ParamListExpressions, expr.ParamList, this);
}
// CASE 5: Member call via "." : either static or instance method call. e.g. Person.Create() or instance1.FullName() e.g.
else if (maccess.Mode == MemberMode.CustObjMethodStatic || maccess.Mode == MemberMode.CustObjMethodInstance)
{
result = FunctionHelper.CallMemberOnClass(this.Ctx, expr, maccess, expr.ParamListExpressions, expr.ParamList, this);
}
// Pop the function name off the call stack.
this.Ctx.State.Stack.Pop();
return(result);
}
/// <summary>
/// Evauate and run the function
/// </summary>
/// <returns></returns>
public override object DoEvaluate()
{
object result = null;
bool isNameEmpty = string.IsNullOrEmpty(_name);
// CASE 1: Exp is variable -> internal/external script. "getuser()".
if (this.NameExp is VariableExpr)
{
return(FunctionHelper.CallFunction(this.Ctx, this, null, true));
}
// At this point, is a method call on an object.
var member = this.NameExp.Evaluate();
result = member;
var isMemberAccessType = member is MemberAccess;
if (!isMemberAccessType)
{
return(result);
}
var callStackName = this.NameExp.ToQualifiedName();
var maccess = member as MemberAccess;
if (!IsMemberCall(maccess))
{
return(result);
}
this.Ctx.State.Stack.Push(callStackName, this);
// CASE 3: object "." method call from script is a external/internal function e.g log.error -> external c# callback.
if (maccess.IsInternalExternalFunctionCall())
{
result = FunctionHelper.CallFunction(Ctx, this, maccess.FullMemberName, false);
}
// CASE 4: Method call / Property on Language types
else if (maccess.Type != null)
{
result = FunctionHelper.CallMemberOnBasicType(this.Ctx, this, maccess, this.ParamListExpressions, this.ParamList);
}
// CASE 5: Member call via "." : either static or instance method call. e.g. Person.Create() or instance1.FullName() e.g.
else if (maccess.Mode == MemberMode.CustObjMethodStatic || maccess.Mode == MemberMode.CustObjMethodInstance)
{
result = FunctionHelper.CallMemberOnClass(this.Ctx, this, maccess, this.ParamListExpressions, this.ParamList);
}
// Pop the function name off the call stack.
this.Ctx.State.Stack.Pop();
return(result);
}