public override RuntimeValue Evaluate(IOtterContext context)
#endif
{
if (string.IsNullOrEmpty(this.VariableName))
{
return(false);
}
RuntimeValueType[] types;
if (string.Equals(this.VariableType, "scalar", StringComparison.OrdinalIgnoreCase))
{
types = new[] { RuntimeValueType.Scalar }
}
;
else if (string.Equals(this.VariableType, "vector", StringComparison.OrdinalIgnoreCase))
{
types = new[] { RuntimeValueType.Vector }
}
;
else if (string.Equals(this.VariableType, "map", StringComparison.OrdinalIgnoreCase))
{
types = new[] { RuntimeValueType.Map }
}
;
else
{
types = new[] { RuntimeValueType.Scalar, RuntimeValueType.Vector, RuntimeValueType.Map }
};
var execContext = context as IOperationExecutionContext;
if (execContext == null)
{
return(null);
}
foreach (var type in types)
{
var variableName = new RuntimeVariableName(this.VariableName, type);
var value = execContext.TryGetVariableValue(variableName);
if (value != null)
{
return(value.Value);
}
var functionValue = execContext.TryGetFunctionValue(variableName.ToString());
if (functionValue != null)
{
return(functionValue.Value);
}
}
return(null);
}
}
private static RuntimeValue?TryGetFunctionValue(RuntimeVariableName functionName, IOperationExecutionContext context)
{
try
{
return(context.TryGetFunctionValue(functionName.ToString()));
}
catch
{
return(null);
}
}
protected override object EvaluateScalar(object context)
{
if (string.IsNullOrEmpty(this.VariableName))
{
return(false);
}
RuntimeValueType[] types;
if (string.Equals(this.VariableType, "scalar", StringComparison.OrdinalIgnoreCase))
{
types = new[] { RuntimeValueType.Scalar }
}
;
else if (string.Equals(this.VariableType, "vector", StringComparison.OrdinalIgnoreCase))
{
types = new[] { RuntimeValueType.Vector }
}
;
else if (string.Equals(this.VariableType, "map", StringComparison.OrdinalIgnoreCase))
{
types = new[] { RuntimeValueType.Map }
}
;
else
{
types = new[] { RuntimeValueType.Scalar, RuntimeValueType.Vector, RuntimeValueType.Map }
};
var execContext = context as IOperationExecutionContext;
foreach (var type in types)
{
var variableName = new RuntimeVariableName(this.VariableName, type);
if (execContext.TryGetVariableValue(variableName) != null)
{
return(true);
}
if (execContext.TryGetFunctionValue(variableName.ToString()) != null)
{
return(true);
}
}
return(false);
}
}