/// <summary>
/// Parse a formula, return the the tree
/// </summary>
/// <param name="input">The formula to be parsed.</param>
/// <exception cref="ArgumentException">
/// If formula could not be parsed
/// </exception>
/// <returns>Parse tree</returns>
public static ParseTree ParseToTree(string input)
{
var tree = P.Parse(input);
if (tree.HasErrors())
{
throw new ArgumentException("Failed parsing input <<" + input + ">>");
}
var intersects = tree.Root.AllNodes().Where(node => node.Is(GrammarNames.TokenIntersect));
foreach (ParseTreeNode intersect in intersects)
{
var newLocation = new SourceLocation(intersect.Span.Location.Position - 1, intersect.Span.Location.Line, intersect.Span.Location.Column - 1);
intersect.Span = new SourceSpan(newLocation, 1);
}
var quotedSheetNodes = tree.Root.AllNodes().Where(node => node.Is(GrammarNames.TokenSheetQuoted));
foreach (ParseTreeNode quotedSheetNode in quotedSheetNodes)
{
PrefixInfo.FixQuotedSheetNodeForWhitespace(quotedSheetNode, input);
}
return(tree);
}
/// <summary> /// Extract all of the information from a Prefix non-terminal /// </summary> public static PrefixInfo GetPrefixInfo(this ParseTreeNode prefix) => PrefixInfo.From(prefix);
/// <summary>
/// Initializes the current object based on the input ParseTreeNode
/// </summary>
/// <remarks>
/// For Reference nodes (Prefix ReferenceItem), it initialize the values derived from the Prefix node and
/// is re-invoked for the ReferenceItem node.
/// </remarks>
public void InitializeReference(ParseTreeNode node)
{
switch (node.Type())
{
case GrammarNames.Reference:
PrefixInfo prefix = node.ChildNodes[0].GetPrefixInfo();
Worksheet = prefix.HasSheet ? prefix.Sheet.Replace("''", "'") : "(Undefined sheet)";
if (prefix.HasMultipleSheets)
{
string[] sheets = prefix.MultipleSheets.Split(':');
Worksheet = sheets[0];
LastWorksheet = sheets[1];
}
if (prefix.HasFileNumber)
{
FileName = prefix.FileNumber.ToString();
}
else if (prefix.HasFileName)
{
FileName = prefix.FileName;
}
else
{
FileName = null;
}
InitializeReference(node.ChildNodes[1]);
break;
case GrammarNames.Cell:
ReferenceType = ReferenceType.Cell;
MinLocation = node.ChildNodes[0].Token.ValueString;
MaxLocation = MinLocation;
break;
case GrammarNames.NamedRange:
ReferenceType = ReferenceType.UserDefinedName;
Name = node.ChildNodes[0].Token.ValueString;
if (FileName != null)
{
MinLocation = "A1";
}
break;
case GrammarNames.HorizontalRange:
string[] horizontalLimits = node.ChildNodes[0].Token.ValueString.Split(':');
ReferenceType = ReferenceType.HorizontalRange;
MinLocation = "A" + horizontalLimits[0];
MaxLocation = ConvertColumnToStr(MaxRangeWidth - 1) + horizontalLimits[1];
break;
case GrammarNames.VerticalRange:
string[] verticalLimits = node.ChildNodes[0].Token.ValueString.Split(':');
ReferenceType = ReferenceType.VerticalRange;
MinLocation = verticalLimits[0] + "1";
MaxLocation = verticalLimits[1] + MaxRangeHeight;
break;
case GrammarNames.RefError:
ReferenceType = ReferenceType.RefError;
MinLocation = "A1";
break;
default:
// UDFs
MinLocation = "A1";
break;
}
LocationString = node.Print();
}
