/// <summary>
/// Executes an already analysed script.
/// The result object must be disposed before executing another piece of code.
/// You can use the static <see cref="Evaluate(Expr, GlobalContext)"/> for simple scenarios.
/// </summary>
/// <param name="s">The string to execute.</param>
/// <returns>A result that may be pending...</returns>
public Result Execute(Expr e)
{
if (_currentResult != null)
{
throw new InvalidOperationException();
}
_currentResult = StartExecution();
_currentResult.UpdateStatus(_visitor.VisitExpr(e));
return(_currentResult);
}
public bool IsPendingOrSignal(ref PExpr current, Expr e)
{
if (current.IsResolved)
{
return(false);
}
if (current.IsUnknown)
{
current = Visitor.VisitExpr(e);
}
else
{
current = Visitor.StepOver(current.Frame, StepOverKind.InternalStepOver);
}
return(current.IsPendingOrSignal);
}
/// <summary>
/// Simple static helper to evaluate an expression (typically a pure expression without side effects).
/// </summary>
/// <param name="e">The expression to evaluate.</param>
/// <param name="ctx">The <see cref="GlobalContext"/>. When null, a new default GlobalContext is used.</param>
/// <returns>The result of the evaluation.</returns>
public static RuntimeObj Evaluate( Expr e, GlobalContext ctx = null )
{
EvalVisitor v = new EvalVisitor( ctx ?? new GlobalContext() );
return v.VisitExpr( e ).Result;
}
/// <summary>
/// Simple static helper to evaluate an expression (typically a pure expression without side effects).
/// </summary>
/// <param name="e">The expression to evaluate.</param>
/// <param name="ctx">The <see cref="GlobalContext"/>. When null, a new default GlobalContext is used.</param>
/// <returns>The result of the evaluation.</returns>
public static RuntimeObj Evaluate(Expr e, GlobalContext ctx = null)
{
EvalVisitor v = new EvalVisitor(ctx ?? new GlobalContext());
return(v.VisitExpr(e).Result);
}
