internal static List<StatementSyntax> PrepareForLoop(AST.EachBlock.ForLoopFlags flags, int loopLevel)
{
var result = new List<StatementSyntax>();
if (flags.HasFlag(AST.EachBlock.ForLoopFlags.Last) || flags.HasFlag(AST.EachBlock.ForLoopFlags.Index))
result.Add(DeclareIntVariable($"index{loopLevel}"));
if (flags.HasFlag(AST.EachBlock.ForLoopFlags.Last))
result.Add(DeclareBoolVariableInitialyFalse($"last{loopLevel}"));
if (flags.HasFlag(AST.EachBlock.ForLoopFlags.First))
result.Add(DeclareBoolVariableInitialyTrue($"first{loopLevel}"));
return result;
}
private bool PruneAll(AST.Options options)
{
return options.HasFlag(AST.Options.TrimAllTextNodes);
}
public bool Prune(AST.Options options)
{
if (options.HasFlag(AST.Options.DontTrackContext)) Context = null;
return PruneAll(options)||PruneEmpty(options);
}
public bool PruneEmpty(AST.Options options)
{
if (!options.HasFlag(AST.Options.TrimEmptyTextNodes)) return false;
if (Value.Trim().Length == 0) return true;
return false;
}
public bool Prune(AST.Options options)
{
if (options.HasFlag(AST.Options.DontTrackContext)) Context=null;
if (options.HasFlag(AST.Options.FlatExpression)) _children.Clear();
foreach (var expressionNode in _children)
{
expressionNode.Prune(options);
}
return false;
}