public void ColorText(WordPointer word, WordType type, TextPointer entered)
{
FirstTime = false;
if (word.EndingPosition == null || word.StartingPoistion == null)
{
return;
}
workingBox.Selection.Select(word.StartingPoistion, word.EndingPosition);
switch (type.type)
{
case WordType.boundType.TEXT:
workingBox.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, textColor);
break;
case WordType.boundType.KEYWORD:
workingBox.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, keyWordColor);
break;
case WordType.boundType.LEXERROR:
workingBox.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, LexerColor);
break;
case WordType.boundType.COMMENT:
workingBox.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.DarkGreen);
break;
case WordType.boundType.STRING:
workingBox.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.DarkOrange);
break;
}
workingBox.Selection.Select(entered, entered);//in khat bayad bashe ta bad az in ke karemun tamum shod selection
//bardashte beshe
FirstTime = true;
}
public bool staticLexer()
{
FirstTime = false;
bool lexError = false;
currentTokenIndex = 0;
if (listOfTokens.Count != 0)
{
listOfTokens.RemoveRange(0, listOfTokens.Count);
}
DFAOut output = new DFAOut();
output.pointer = workingBox.Document.ContentStart.GetNextInsertionPosition(LogicalDirection.Forward);
TextPointer starOfWord = workingBox.Document.ContentStart.GetNextInsertionPosition(LogicalDirection.Forward);
WordPointer current;
while (true)
{
output = traceViaDFA(output.pointer);
current = new WordPointer(starOfWord, output.pointer);
current.lexingOK = output.accept;
if (output.text == "comment")
{
current.isComment = true;
}
if (output.text == "string")
{
current.isString = true;
}
if (current.text == "") //traceDFA return "" when encouters with a delimeter
{
break;
}
if (current.lexingOK == false)
{
lexError = true;
}
if (current.text.Contains(">"))
{
current.text = current.text.Replace(">", "\\>");
}
if (current.text.Contains("<"))
{
current.text = current.text.Replace("<", "\\<");
}
if (current.text.Contains("$"))
{
current.text = current.text.Replace("<$", "\\$");
}
current.Type = output.text;
if (current.text != "\r\n" && current.isComment == false && current.text != " ")
{
listOfTokens.Add(current);
}
starOfWord = output.pointer;
}
//This part is for coloring the text
TextPointer enteredPosition = workingBox.Document.ContentStart;
WordType text3 = new WordType();
text3.type = WordType.boundType.TEXT;
for (int i = 0; i < listOfTokens.Count; i++)
{
visual.ColorText(listOfTokens[i], text3, enteredPosition); //aval hame matn ro siah mikonim
}
text3.type = WordType.boundType.LEXERROR;
for (int i = 0; i < listOfTokens.Count; i++)
{
if (listOfTokens[i].lexingOK == false)
{
visual.ColorText(listOfTokens[i], text3, enteredPosition);
}
}
for (int i = 0; i < listOfTokens.Count; i++)
{
text3.type = WordType.boundType.KEYWORD;
for (int j = 0; j < keyWords.Length; j++)
{
if (listOfTokens[i].text == keyWords[j])
{
listOfTokens[i].Type = keyWords[j];
visual.ColorText(listOfTokens[i], text3, enteredPosition); // yani range keyWordColor
break;
}
}
}
text3.type = WordType.boundType.COMMENT;
for (int i = 0; i < listOfTokens.Count; i++)
{
if (listOfTokens[i].isComment == true)
{
visual.ColorText(listOfTokens[i], text3, enteredPosition);
}
}
text3.type = WordType.boundType.STRING;
for (int i = 0; i < listOfTokens.Count; i++)
{
if (listOfTokens[i].isString == true)
{
visual.ColorText(listOfTokens[i], text3, enteredPosition);
}
}
currentTokenIndex = 0;
FirstTime = true;
return(lexError);
}
/// <summary>
/// This function use for lexing while the user is typing the input, it might significantly reduce
/// the speed.
/// </summary>
/// <param name="beforTextEnter"></param>
/// <returns></returns>
public bool getLastChar(TextPointer beforTextEnter)
{
if (FirstTime == false)
{
return(false);
}
FirstTime = false;
bool lexError = false;
TextPointer currentPosition;
TextPointer endOfCurrent = workingBox.Selection.End;
currentPosition = workingBox.Selection.End.GetInsertionPosition(LogicalDirection.Backward);
TextPointer enteredPosition = currentPosition;
GroupWordPointer GroupOfWords = new GroupWordPointer(enteredPosition);
if (currentPosition == null)
{
FirstTime = true;
return(false);
}
TextPointer startOFWord = getCurrentChar(workingBox.Selection.Start, LogicalDirection.Backward);
TextRange delemiter = new TextRange(workingBox.Selection.Start, startOFWord);
string text = workingBox.Selection.Text;
if (delemiter.Text == "") //a delimeter here
{
if (startOFWord.GetNextInsertionPosition(LogicalDirection.Backward) != null)
{
if (new TextRange(startOFWord, startOFWord.GetNextInsertionPosition(LogicalDirection.Backward)).GetPropertyValue(TextElement.ForegroundProperty) == Brushes.DarkGreen)
{
Brush brush = Brushes.DarkGreen;
startOFWord = getColorPoint(startOFWord, LogicalDirection.Backward, enteredPosition, Brushes.DarkGreen);
}
else if (new TextRange(startOFWord, startOFWord.GetNextInsertionPosition(LogicalDirection.Backward)).GetPropertyValue(TextElement.ForegroundProperty) == Brushes.DarkOrange)
{
Brush brush = Brushes.DarkOrange;
startOFWord = getColorPoint(startOFWord, LogicalDirection.Backward, enteredPosition, brush);
}
else
{
if (workingBox.Selection.Start.GetNextInsertionPosition(LogicalDirection.Backward) != null)
{
startOFWord = getCurrentChar(workingBox.Selection.Start.GetNextInsertionPosition(LogicalDirection.Backward), LogicalDirection.Backward);
}
}
}
}
else
{
if (startOFWord.GetNextInsertionPosition(LogicalDirection.Forward) != null)
{
if (new TextRange(startOFWord, startOFWord.GetNextInsertionPosition(LogicalDirection.Forward)).GetPropertyValue(TextElement.ForegroundProperty) == Brushes.DarkGreen)
{
startOFWord = getColorPoint(startOFWord, LogicalDirection.Backward, enteredPosition, Brushes.DarkGreen);
}
else if (new TextRange(startOFWord, startOFWord.GetNextInsertionPosition(LogicalDirection.Forward)).GetPropertyValue(TextElement.ForegroundProperty) == Brushes.DarkOrange)
{
startOFWord = getColorPoint(startOFWord, LogicalDirection.Backward, enteredPosition, Brushes.DarkOrange);
}
}
}
List <WordPointer> listOFWords = new List <WordPointer>();
DFAOut outPut = new DFAOut();
outPut.pointer = startOFWord;
while (true)
{
outPut = traceViaDFA(startOFWord);
WordPointer current = new WordPointer(startOFWord, outPut.pointer);
current.lexingOK = outPut.accept;
if (outPut.text == "comment")
{
current.isComment = true;
}
if (outPut.text == "string")
{
current.isString = true;
}
if (current.text == "") //traceDFA returns "" when encounters a delimeter
{
break;
}
current.Type = outPut.text;
if (current.lexingOK == false)
{
lexError = true;
}
GroupOfWords.addWord(current);
listOFWords.Add(current);
startOFWord = outPut.pointer;
}
workingBox.Selection.Select(enteredPosition, enteredPosition);
WordType text3 = new WordType();
text3.type = WordType.boundType.TEXT;
for (int i = 0; i < GroupOfWords.arrayIndex; i++)
{
visual.ColorText(GroupOfWords.GroupOfWords[i], text3, enteredPosition);
}
text3.type = WordType.boundType.LEXERROR;
for (int i = 0; i < GroupOfWords.arrayIndex; i++)
{
if (GroupOfWords.GroupOfWords[i].lexingOK == false)
{
visual.ColorText(GroupOfWords.GroupOfWords[i], text3, enteredPosition);
}
}
for (int i = 0; i < GroupOfWords.arrayIndex; i++)
{
text3.type = WordType.boundType.KEYWORD;
for (int j = 0; j < keyWords.Length; j++)
{
if (GroupOfWords.GroupOfWords[i].text == keyWords[j])
{
GroupOfWords.GroupOfWords[i].Type = keyWords[j];
visual.ColorText(GroupOfWords.GroupOfWords[i], text3, enteredPosition); // yani range keyWordColor
break;
}
}
}
text3.type = WordType.boundType.COMMENT;
for (int i = 0; i < GroupOfWords.arrayIndex; i++)
{
if (GroupOfWords.GroupOfWords[i].isComment == true)
{
visual.ColorText(GroupOfWords.GroupOfWords[i], text3, enteredPosition);
}
}
text3.type = WordType.boundType.STRING;
for (int i = 0; i < GroupOfWords.arrayIndex; i++)
{
if (GroupOfWords.GroupOfWords[i].isString == true)
{
visual.ColorText(GroupOfWords.GroupOfWords[i], text3, enteredPosition);
}
}
FirstTime = true;
return(lexError);
}