public override PatternMatchResult GetMatch(List <Token> tokens, int @from = 0)
{
var openTokenMatch = TokenSearchUtils.FindToken(tokens, BlockStartToken, from);
if (openTokenMatch.IsFullMatch)
{
var blockBeginIndex = openTokenMatch.Start;
var openTokenCount = 0;
var closeTokenCount = 0;
for (var i = blockBeginIndex; i < tokens.Count; i++)
{
if (tokens[i].TokenType == BlockStartToken)
{
openTokenCount++;
}
else if (tokens[i].TokenType == BlockEndToken)
{
closeTokenCount++;
}
if (openTokenCount == closeTokenCount && openTokenCount != 0 && closeTokenCount != 0)
{
return(new PatternMatchResult(blockBeginIndex, i + 1));
}
}
}
return(PatternMatchResult.Empty);
}
public override PatternMatchResult GetMatch(List <Token> tokens, int @from = 0)
{
if (Seq.Count > 0)
{
var firstTokenMatch = TokenSearchUtils.FindToken(tokens, Seq[0], from);
var seqStartIndex = firstTokenMatch.Start;
while (seqStartIndex + Seq.Count <= tokens.Count)
{
var allMatches = true;
// from 1 !!!
for (var i = 1; i < Seq.Count; i++)
{
if (Seq[i] != tokens[seqStartIndex + i].TokenType)
{
allMatches = false;
break;
}
}
if (allMatches)
{
return(new PatternMatchResult(seqStartIndex, seqStartIndex + Seq.Count));
}
seqStartIndex++;
seqStartIndex = TokenSearchUtils.FindToken(tokens, Seq[0], seqStartIndex).Start;
if (seqStartIndex == -1)
{
return(PatternMatchResult.Empty);
}
}
}
return(PatternMatchResult.Empty);
}
public override PatternMatchResult GetMatch(List <Token> tokens, int @from = 0)
{
if (TokensToSearch.Count == 1)
{
return(TokenSearchUtils.FindToken(tokens, TokensToSearch[0], from));
}
var firstTokenIndex = int.MaxValue;
foreach (var tokenType in TokensToSearch)
{
var lexMatchResult = TokenSearchUtils.FindToken(tokens, tokenType, from);
if (lexMatchResult.IsFullMatch && lexMatchResult.Start < firstTokenIndex)
{
firstTokenIndex = lexMatchResult.Start;
}
}
if (firstTokenIndex == int.MaxValue)
{
return(PatternMatchResult.Empty);
}
return(new PatternMatchResult(firstTokenIndex, firstTokenIndex + 1));
}
public override PatternMatchResult GetMatch(List <Token> tokens, int @from = 0)
{
return(TokenSearchUtils.FindToken(tokens, Token, from));
}