public void VisitEnter(EachBlock astNode)
{
state.SetCursor(astNode);
//Check if we are already in a compiletime loop.
if (astNode.Type != EachBlock.LoopType.CompileTime)
{//Not in compiletime loop. procede as usual
Context loopedVariable;
if (astNode.Member.TryEvaluate(state, out loopedVariable))
{
state.PromiseTruthyCheck(loopedVariable);
state.PushNewBlock();
Context loopContext = astNode.Member.EvaluateLoop(state);
if (loopContext != null)
{//The loopVariable implements IEnumerable -> runtimeloop over its contents
astNode.Type = EachBlock.LoopType.RunTime;
state.ContextStack.Push(astNode.Member.EvaluateLoop(state));
state.LoopLevel++;
if (astNode.Flags.HasFlag(EachBlock.ForLoopFlags.Last))
{
state.SetLastVariable(loopedVariable.FullPath);
}
}
else
{//The loopVariable is an object. Compiletimeloop over its Members
astNode.Type = EachBlock.LoopType.CompileTime;
//Push the CompileTimeLoopContext
var ctLoopContext = new CompileTimeLoopContext(loopedVariable.FullPath, loopedVariable.Symbol);
ctLoopContext.MoveNext();
state.ContextStack.Push(ctLoopContext);
}
}
}
}
public HtmlEngine(ViewCollection views)
{
this.views = views;
RemoveComments = true;
VariableNotFoundBehavior = VariableNotFoundBehavior.Source;
conditionalBlock = new ConditionalBlock(this);
eachBlock = new EachBlock(this);
}
public void VisitLeave(EachBlock astNode)
{
state.SetCursor(astNode);
if (astNode.Type == EachBlock.LoopType.RunTime)
{
if (astNode.Flags.HasFlag(EachBlock.ForLoopFlags.Index) || astNode.Flags.HasFlag(EachBlock.ForLoopFlags.Last))
{
state.IncrementIndexVariable();
}
if (astNode.Flags.HasFlag(EachBlock.ForLoopFlags.First))
{
state.SetFirstVariable();
}
//Leave loop context
state.ContextStack.Pop();
state.LoopLevel--;
var prepareLoopStatements = SyntaxHelper.PrepareForLoop(astNode.Flags, state.LoopLevel + 1);
Context context;
if (astNode.Member.TryEvaluate(state, out context))
{
prepareLoopStatements.Add(SyntaxHelper.ForLoop(astNode.Member.EvaluateLoop(state).FullPath, context.FullPath, state.PopBlock()));
}
state.DoTruthyCheck(
prepareLoopStatements
);
}
else if (astNode.Type == EachBlock.LoopType.CompileTime)
{
//Check if loop is completed
var ctLoopContext = state.ContextStack.Peek() as CompileTimeLoopContext;
if (ctLoopContext.MoveNext())
{//Next Iteration
astNode.Accept(this);
}
else
{//Pop ctLoopContext
state.ContextStack.Pop();
state.DoTruthyCheck(state.PopBlock());
}
}
}
public void VisitLeave(EachBlock astNode)
{
state.SetCursor(astNode);
if (astNode.Type==EachBlock.LoopType.RunTime)
{
if (astNode.Flags.HasFlag(EachBlock.ForLoopFlags.Index) || astNode.Flags.HasFlag(EachBlock.ForLoopFlags.Last))
state.IncrementIndexVariable();
if (astNode.Flags.HasFlag(EachBlock.ForLoopFlags.First))
state.SetFirstVariable();
//Leave loop context
state.ContextStack.Pop();
state.LoopLevel--;
var prepareLoopStatements = SyntaxHelper.PrepareForLoop(astNode.Flags, state.LoopLevel + 1);
Context context;
if (astNode.Member.TryEvaluate(state, out context))
{
prepareLoopStatements.Add(SyntaxHelper.ForLoop(astNode.Member.EvaluateLoop(state).FullPath, context.FullPath, state.PopBlock()));
}
state.DoTruthyCheck(
prepareLoopStatements
);
} else if (astNode.Type==EachBlock.LoopType.CompileTime)
{
//Check if loop is completed
var ctLoopContext = state.ContextStack.Peek() as CompileTimeLoopContext;
if (ctLoopContext.MoveNext())
{//Next Iteration
astNode.Accept(this);
}
else
{//Pop ctLoopContext
state.ContextStack.Pop();
state.DoTruthyCheck(state.PopBlock());
}
}
}
public void VisitEnter(EachBlock astNode)
{
state.SetCursor(astNode);
//Check if we are already in a compiletime loop.
if (astNode.Type!=EachBlock.LoopType.CompileTime)
{//Not in compiletime loop. procede as usual
Context loopedVariable;
if (astNode.Member.TryEvaluate(state, out loopedVariable))
{
state.PromiseTruthyCheck(loopedVariable);
state.PushNewBlock();
Context loopContext = astNode.Member.EvaluateLoop(state);
if (loopContext!=null)
{//The loopVariable implements IEnumerable -> runtimeloop over its contents
astNode.Type = EachBlock.LoopType.RunTime;
state.ContextStack.Push(astNode.Member.EvaluateLoop(state));
state.LoopLevel++;
if (astNode.Flags.HasFlag(EachBlock.ForLoopFlags.Last))
state.SetLastVariable(loopedVariable.FullPath);
}
else
{//The loopVariable is an object. Compiletimeloop over its Members
astNode.Type = EachBlock.LoopType.CompileTime;
//Push the CompileTimeLoopContext
var ctLoopContext = new CompileTimeLoopContext(loopedVariable.FullPath, loopedVariable.Symbol);
ctLoopContext.MoveNext();
state.ContextStack.Push(ctLoopContext);
}
}
}
}