Python QRegExp.pos方法代码示例

# 需要导入模块: from PySide.QtCore import QRegExp [as 别名]
# 或者: from PySide.QtCore.QRegExp import pos [as 别名]
class MacroHighlighter(QSyntaxHighlighter):
    def __init__(self,textboxdoc,valid_list_of_commands):
        QSyntaxHighlighter.__init__(self,textboxdoc)
        self.valid_syntax="|".join([command.regexp_str for command in valid_list_of_commands])
        self.my_expression = QRegExp(self.valid_syntax)
        #define a blue font format for valid commands
        self.valid = QTextCharFormat()
        self.valid.setForeground(Qt.black)
        #define a bold red font format for invalid commands
        self.invalid = QTextCharFormat()
        self.invalid.setFontWeight(QFont.Bold)
        self.invalid.setForeground(Qt.red)
        #define a blue font format for valid parameters
        self.valid_value=QTextCharFormat()        
        self.valid_value.setFontWeight(QFont.Bold)
        #self.valid_value.setForeground(QColor.fromRgb(255,85,0))
        self.valid_value.setForeground(Qt.blue)
                
    def highlightBlock(self, text):
        #this function is automatically called when some text is changed
        #in the texbox. 'text' is the line of text where the change occured    
        #check if the line of text contains a valid command
        match = self.my_expression.exactMatch(text)
        if match:
            #valid command found: highlight the command in blue
            self.setFormat(0, len(text), self.valid)
            #highlight the parameters in orange
            #loop on all the parameters that can be captured
            for i in range(self.my_expression.captureCount()):
                #if a parameter was captured, it's position in the text will be >=0 and its capture contains some value 'xxx'
                #otherwise its position is -1 and its capture contains an empty string ''
                if self.my_expression.pos(i+1)!=-1:
                    self.setFormat(self.my_expression.pos(i+1), len(self.my_expression.cap(i+1)), self.valid_value)
        else:
            #no valid command found: highlight in red
            self.setFormat(0, len(text), self.invalid)

# 需要导入模块: from PySide.QtCore import QRegExp [as 别名]
# 或者: from PySide.QtCore.QRegExp import pos [as 别名]
    def highlightBlock(self, text):
        """ Highlight a block of text """
        if self.enabled is False:
            return
        text = unicode(text)
        original_text = text
        prev_data = self.currentBlock().previous().userData()

        if prev_data is not None:
            self._lexer._saved_state_stack = prev_data.syntax_stack
        elif hasattr(self._lexer, '_saved_state_stack'):
            del self._lexer._saved_state_stack

        # Lex the text using Pygments
        index = 0
        for token, text in self._lexer.get_tokens(text):
            length = len(text)
            self.setFormat(index, length, self._get_format(token))
            index += length

        if hasattr(self._lexer, '_saved_state_stack'):
            data = PygmentsBlockUserData(
                syntax_stack=self._lexer._saved_state_stack)
            self.currentBlock().setUserData(data)
            # Clean up for the next go-round.
            del self._lexer._saved_state_stack

        #Spaces
        expression = QRegExp('\s+')
        index = expression.indexIn(original_text, 0)
        while index >= 0:
            index = expression.pos(0)
            length = len(expression.cap(0))
            self.setFormat(index, length, self._get_format(Whitespace))
            index = expression.indexIn(original_text, index + length)

        self.hilighlightingBlock.emit(original_text, self)