/// <summary>
/// This is very unsafe as everything is converted to Upper
/// before the conversion (ie. it matches against any case)
/// </summary>
/// <param name="xoTrivia"></param>
/// <returns></returns>
private static Boolean ScanTriviaForKeywords(
ParsingContext xoContext,
SyntaxTrivia xoTrivia,
out List <ISyntax> xaoReturnList)
{
// Initialise the out var
xaoReturnList = new List <ISyntax>();
// Exit early if invalid argument passed
if (xoTrivia == null)
{
return(false);
}
// Break apart the trivia text
String[] asTriviaTextTokens = xoTrivia.RawSQLText.Split();
// Start looping through the trivia text
for (int iIndex = 0; iIndex < asTriviaTextTokens.Length; iIndex++)
{
// For each string in the Comment/Trivia
String sLoopingVar = asTriviaTextTokens[iIndex];
SyntaxKind ePossibleKind = SyntaxKindUtilities.GetKindFromString(sLoopingVar); // Try and get a kind
// If we have a positive match
if (ePossibleKind != SyntaxKind.UnknownNode)
{
// Mayfly
SyntaxToken oToken = new SyntaxToken(ePossibleKind, sLoopingVar);
// If we can consume this node (it is something we expect)
if (xoContext.CurrentNode.CanConsumeNode(
new ParsingContext(xoContext.CurrentNode,
new SyntaxList(oToken)),
false) == CanConsumeResult.Consume)
{
// Create tokens from everything beyond this Keyword we can use (because they will most likely be
// a part of the new keyword)
String sRemainingText = String.Join(" ", asTriviaTextTokens.Skip(iIndex));
xoTrivia.RawSQLText = String.Join(" ", asTriviaTextTokens.Take(iIndex));
// Start lexing the rest of the terms
SyntaxLexer oLexer = new SyntaxLexer(new SlidingTextWindow(sRemainingText));
// Add the new tokens to our list
while (oLexer.HasTokensLeftToProcess())
{
xaoReturnList.Add(oLexer.LexNextToken());
}
}
}
}
return(xaoReturnList.Count > 0);
}
/// <summary>
/// Container method for any cumbersome initialisation methods
/// </summary>
private void Initialise()
{
// Generate a list of tokens from the available text
while (oLexer.HasTokensLeftToProcess())
{
// Add any tokens found into our list
TokenList.Add(oLexer.LexNextToken());
}
// make sure we have an EOF at the end
if (TokenList[TokenList.Count - 1].ExpectedType != SyntaxKind.EOFNode)
{
TokenList.Add(new SyntaxToken(SyntaxKind.EOFNode, ""));
}
}
