private static ParseTreeNode MoveTo(ParseTreeNode pt, Context old, Context _new)
{
if (pt.Is(GrammarNames.Reference))
{
return(_new.QualifyMinimal(old.Qualify(pt)));
}
return(pt.ChildNodes.Count == 0 ? pt : CustomParseTreeNode.From(pt).SetChildNodes(pt.ChildNodes.Select(x => MoveTo(x, old, _new))));
}
/// <summary>
/// Return a copy of the first child, or return the provided default
/// </summary>
internal static CustomParseTreeNode FirstOrNewChild(this ParseTreeNode pt, CustomParseTreeNode def)
{
return(pt.ChildNodes
.Where(x => x.Is(def.Term.Name))
.Select(CustomParseTreeNode.From)
.DefaultIfEmpty(def)
.First());
}
/// <summary>
/// Create a CustomParseTreeNode from an existing ParseTreeNode
/// </summary>
public static CustomParseTreeNode From(ParseTreeNode pt)
{
// Check for nonterminal or terminal term
var nonterm = pt.Term as NonTerminal;
if (nonterm != null)
{
var ret = new CustomParseTreeNode(nonterm, pt.Span);
ret.SetChildNodes(pt.ChildNodes);
return(ret);
}
else
{
return(new CustomParseTreeNode(pt.Token));
}
}
/// <summary>
/// Add a workbook and sheet reference to a prefix if they aren't provided yet
/// </summary>
/// <remarks>Qualify because (book,sheet,name) is a fully qualified name</remarks>
public ParseTreeNode Qualify(ParseTreeNode reference)
{
// Check if this reference can be qualified
if (!isPrefixableReference(reference))
{
return(reference);
}
var referenced = reference.ChildNodes.First(node => !node.Is(GrammarNames.Prefix));
bool hasPrefix = reference.ChildNodes.Any(node => node.Is(GrammarNames.Prefix));
var prefix = reference.FirstOrNewChild(CustomParseTreeNode.NonTerminal(GrammarNames.Prefix));
PrefixInfo prefixinfo = null;
if (hasPrefix)
{
prefixinfo = prefix.GetPrefixInfo();
}
var file = prefix.FirstOrNewChild(CustomParseTreeNode.NonTerminal(GrammarNames.File, GrammarNames.TokenEnclosedInBrackets, $"[{DefinedIn.FileName}]"));
var sheet = prefix.FirstOrNewChild(CustomParseTreeNode.Terminal(GrammarNames.TokenSheet, DefinedIn.Worksheet));
// Named ranges can be both workbook-level and sheet-level and need additional logic
if (referenced.ChildNodes.First().Is(GrammarNames.NamedRange))
{
var name = referenced.ChildNodes.First().ChildNodes.First().Token.ValueString;
// If a sheet was already provided, either the file was provided or will correctly be filled by definition above
if (!(prefixinfo != null && prefixinfo.HasSheet))
{
bool isDefinedOnSheetLevel = NamedRanges.Contains(new NamedRangeDef(DefinedIn, name));
// If a file was provided but no sheet, it's a workbook-level definition
// If a sheet-level name is not defined, either a workbook-level name is defined,
// or it's not defined and we assume the Excel default of workbook-level
if ((prefixinfo != null && prefixinfo.HasFile) || !isDefinedOnSheetLevel)
{
sheet = CustomParseTreeNode.Terminal(GrammarNames.TokenSheet, "");
}
}
}
prefix = prefix.SetChildNodes(file, sheet);
return(CustomParseTreeNode.From(reference).SetChildNodes(prefix, referenced));
}
private static ParseTreeNode Replace(ParseTreeNode subject, ParseTreeNode search, ParseTreeNode replace, Context csub, Context csearch, Context crepl)
{
// Match, return the replacement
if (Equals(subject, search, csub, csearch))
{
return(MoveTo(replace, crepl, csub));
}
// No match and no children to replace
if (subject.ChildNodes.Count == 0)
{
return(subject);
}
var newChilds = subject.ChildNodes.Select(pt => Replace(pt, search, replace, csub, csearch, crepl));
var replacement = CustomParseTreeNode.From(subject);
replacement.SetChildNodes(newChilds);
return(replacement);
}
/// <summary>
/// Remove superfluous qualification from a node
/// </summary>
public ParseTreeNode QualifyMinimal(ParseTreeNode reference)
{
// Check if this reference can be qualified
if (!isPrefixableReference(reference))
{
return(reference);
}
var referenced = reference.ChildNodes.First(node => !node.Is(GrammarNames.Prefix));
var prefix = reference.FirstChild(GrammarNames.Prefix);
// No prefix, it's already minimal
if (prefix == null)
{
return(reference);
}
var prefixinfo = prefix.GetPrefixInfo();
var childs = new ParseTreeNodeList();
if (prefixinfo.HasFileName && prefixinfo.FileName != DefinedIn.FileName)
{
childs.Add(CustomParseTreeNode.NonTerminal(GrammarNames.File, GrammarNames.TokenEnclosedInBrackets, $"[{prefixinfo.FileName}]"));
childs.Add(CustomParseTreeNode.Terminal(GrammarNames.TokenSheet, prefixinfo.Sheet));
}
else if (prefixinfo.HasSheet && prefixinfo.Sheet != DefinedIn.WorksheetClean)
{
childs.Add(CustomParseTreeNode.Terminal(GrammarNames.TokenSheet, DefinedIn.Worksheet));
}
if (childs.Count > 0)
{
prefix = CustomParseTreeNode.From(prefix).SetChildNodes(childs);
return(CustomParseTreeNode.From(reference).SetChildNodes(prefix, referenced));
}
else
{
return(CustomParseTreeNode.From(reference).SetChildNodes(referenced));
}
}