/// <summary>
/// Classify the given LexToken into a ClassificationTag.
/// </summary>
/// <param name="token">The token to be classified.</param>
/// <returns>The smState value.</returns>
public ClassificationTag Classify(LexToken token)
{
int classTag;
UiExceptionHelper.CheckNotNull(token, "token");
classTag = AcceptLexToken(token);
if (classTag == SMSTATE_CODE &&
_keywords.ContainsKey(token.Text))
{
return(ClassificationTag.Keyword);
}
// Parsing a token whoose Text value is set to '\'
// causes the classifier to set/reset is escaping mode.
if (token.Text == "\\" &&
_sm_output == SMSTATE_STRING &&
!_escaping)
{
_escaping = true;
}
else
{
_escaping = false;
}
return(_tags[classTag]);
}
/// <summary>
/// Classify the given token and get its corresponding SMSTATE value.
/// </summary>
/// <param name="token">The LexToken to be classified.</param>
/// <returns>An SMSTATE value.</returns>
protected int AcceptLexToken(LexToken token)
{
int smState;
if (_escaping)
{
return(SMSTATE_STRING);
}
smState = GetTokenSMSTATE(_sm_output, token.Tag);
_sm_output = GetSMSTATE(_sm_output, token.Tag);
return(smState);
}
/// <summary>
/// Builds the list of all LexToken which text value starts with the one in starter.
/// </summary>
/// <param name="starter">The token that the reference text.</param>
/// <param name="output">The list of tokens which text starts with the one in starter.</param>
protected void PopulateTokenStartingWith(LexToken starter, List <LexToken> output)
{
InternalLexToken token;
UiExceptionHelper.CheckNotNull(starter, "starter");
UiExceptionHelper.CheckNotNull(output, "output");
output.Add(starter);
token = (InternalLexToken)starter;
foreach (LexToken item in token.StartingWith)
{
output.Add(item);
}
return;
}
private void _checkOutput(string sequence, LexToken[] expected)
{
Lexer lexer;
StringBuilder recognized;
string error;
int i;
int j;
lexer = new Lexer();
lexer.Parse(sequence);
recognized = new StringBuilder();
i = 0;
while (lexer.Next())
{
recognized.Append(lexer.CurrentToken.Text);
error = String.Format("Token [{0}] was expected, but lexer returned [{1}] instead, near: [{2}].",
expected[i],
lexer.CurrentToken,
recognized.ToString());
Assert.That(lexer.CurrentToken, Is.EqualTo(expected[i]), error);
i++;
}
Assert.That(lexer.Next(), Is.False, "Error, there are unvisited tokens left.");
error = "missing ";
j = i;
while (j < expected.Length)
{
error += expected[j].ToString();
error += ", ";
++j;
}
Assert.That(i == expected.Length, "Error, more tokens were expected. {0}", error);
return;
}
public new int AcceptLexToken(LexToken token)
{
return (base.AcceptLexToken(token));
}
/// <summary>
/// Classify the given token and get its corresponding SMSTATE value.
/// </summary>
/// <param name="token">The LexToken to be classified.</param>
/// <returns>An SMSTATE value.</returns>
protected int AcceptLexToken(LexToken token)
{
int smState;
if (_escaping)
return (SMSTATE_STRING);
smState = GetTokenSMSTATE(_sm_output, token.Tag);
_sm_output = GetSMSTATE(_sm_output, token.Tag);
return (smState);
}
/// <summary>
/// Classify the given LexToken into a ClassificationTag.
/// </summary>
/// <param name="token">The token to be classified.</param>
/// <returns>The smState value.</returns>
public ClassificationTag Classify(LexToken token)
{
int classTag;
UiExceptionHelper.CheckNotNull(token, "token");
classTag = AcceptLexToken(token);
if (classTag == SMSTATE_CODE &&
_keywords.ContainsKey(token.Text))
return (ClassificationTag.Keyword);
// Parsing a token whoose Text value is set to '\'
// causes the classifier to set/reset is escaping mode.
if (token.Text == "\\" &&
_sm_output == SMSTATE_STRING &&
!_escaping)
_escaping = true;
else
_escaping = false;
return (_tags[classTag]);
}
/// <summary>
/// Builds the list of all LexToken which text value starts with the one in starter.
/// </summary>
/// <param name="starter">The token that the reference text.</param>
/// <param name="output">The list of tokens which text starts with the one in starter.</param>
protected void PopulateTokenStartingWith(LexToken starter, List<LexToken> output)
{
InternalLexToken token;
UiExceptionHelper.CheckNotNull(starter, "starter");
UiExceptionHelper.CheckNotNull(output, "output");
output.Add(starter);
token = (InternalLexToken)starter;
foreach (LexToken item in token.StartingWith)
output.Add(item);
return;
}
public new void PopulateTokenStartingWith(LexToken starter, List<LexToken> output)
{
base.PopulateTokenStartingWith(starter, output);
}
