// Runtime content can be summarised as follows:
// - Evaluate an expression if necessary to branch on
// - Branch to a named container if true
// - Divert back to main flow
// (owner Conditional is in control of this target point)
public override Runtime.Object GenerateRuntimeObject()
{
var container = new Runtime.Container ();
// Are we testing against a condition that's used for more than just this
// branch? If so, the first thing we need to do is replicate the value that's
// on the evaluation stack so that we don't fully consume it, in case other
// branches need to use it.
bool duplicatesStackValue = shouldMatchEquality && !isElse;
if ( duplicatesStackValue )
container.AddContent (Runtime.ControlCommand.Duplicate ());
_conditionalDivert = new Runtime.Divert ();
// else clause is unconditional catch-all, otherwise the divert is conditional
_conditionalDivert.isConditional = !isElse;
// Need extra evaluation?
if( !isTrueBranch && !isElse ) {
bool needsEval = ownExpression != null;
if( needsEval )
container.AddContent (Runtime.ControlCommand.EvalStart ());
if (ownExpression)
ownExpression.GenerateIntoContainer (container);
// Uses existing duplicated value
if (shouldMatchEquality)
container.AddContent (Runtime.NativeFunctionCall.CallWithName ("=="));
if( needsEval )
container.AddContent (Runtime.ControlCommand.EvalEnd ());
}
// Will pop from stack if conditional
container.AddContent (_conditionalDivert);
_contentContainer = GenerateRuntimeForContent ();
_contentContainer.name = "b";
if( duplicatesStackValue )
_contentContainer.InsertContent (Runtime.ControlCommand.PopEvaluatedValue (), 0);
container.AddToNamedContentOnly (_contentContainer);
returnDivert = new Runtime.Divert ();
_contentContainer.AddContent (returnDivert);
return container;
}