Dice/FunctionContext/Expression

Gets the dice expression this function is attached to, or null if it is a global function.

• Namespace: Dice
• Assembly: DiceRoller (in DiceRoller.dll)

Syntax

public DiceAST Expression { get; internal set; }

Property Value

Type: Dice.AST.DiceAST

The dice expression this function is attached to, or null if it is a global function.

Remarks

Roll functions will typically look at and perform some transformation on Expression.Value, Expression.ValueType, and Expression.Values (setting the FunctionContext's Value, ValueType, and Values to the modified versions).

Examples

The following example adds one to a roll.

using Dice;

class Sample
{
    public static void Main()
    {
        Roller.DefaultConfig.FunctionRegistry.RegisterFunction("addOne", AddOne, FunctionScope.Roll);
        Roller.Roll("4d6dl1.addOne()");
    }

    public static void AddOne(FunctionContext context)
    {
        // Expression is the KeepNode representing the "dl1" extra
        context.Value = Expression.Value + 1;
    }
}