/// <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);
}
