Package org.apache.fop.fo.expr

Class PropertyTokenizer

  • Direct Known Subclasses:
    PropertyParser
    class PropertyTokenizer
extends java.lang.Object
    Class to tokenize XSL FO property expression. This class is heavily based on the epxression tokenizer in James Clark's XT, an XSLT processor.

    • Constructor Summary

      Constructors 
      Constructor Description
      PropertyTokenizer​(java.lang.String s)
      Construct a new PropertyTokenizer object to tokenize the passed String.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private boolean followingParen()
      Return a boolean value indicating whether the following non-whitespace character is an opening parenthesis.
      private static boolean isDigit​(char c)
      Return a boolean value indicating whether the argument is a decimal digit (0-9).
      private static boolean isHexDigit​(char c)
      Return a boolean value indicating whether the argument is a hexadecimal digit (0-9, A-F, a-f).
      private static boolean isNameChar​(char c)
      Return a boolean value indicating whether the argument is a valid name character, ie.
      private static boolean isNameStartChar​(char c)
      Return a boolean value indicating whether the argument is a valid name start character, ie.
      (package private) void next()
      Parse the next token in the expression string.
      private void nextColor()  
      private void nextDecimalPoint()  
      private void scanDigits()
      Attempt to recognize a valid sequence of decimal DIGITS in the input expression.
      private void scanHexDigits()
      Attempt to recognize a valid sequence of hexadecimal DIGITS in the input expression.
      private void scanName()
      Attempt to recognize a valid NAME token in the input expression.
      private void scanRestOfName()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • PropertyTokenizer

        PropertyTokenizer​(java.lang.String s)
        Construct a new PropertyTokenizer object to tokenize the passed String.
        Parameters:
        s - The Property expressio to tokenize.

    • Method Detail

      • next

        void next()
   throws PropertyException
        Parse the next token in the expression string. This sets the following package visible variables: currentToken An enumerated value identifying the recognized token currentTokenValue A String containing the token contents currentUnitLength If currentToken = TOK_NUMERIC, the number of characters in the unit name.
        Throws:
        PropertyException - If un unrecognized token is encountered.

      • scanName

        private void scanName()
        Attempt to recognize a valid NAME token in the input expression.

      • scanRestOfName

        private void scanRestOfName()

      • scanDigits

        private void scanDigits()
        Attempt to recognize a valid sequence of decimal DIGITS in the input expression.

      • scanHexDigits

        private void scanHexDigits()
        Attempt to recognize a valid sequence of hexadecimal DIGITS in the input expression.

      • followingParen

        private boolean followingParen()
        Return a boolean value indicating whether the following non-whitespace character is an opening parenthesis.

      • isDigit

        private static boolean isDigit​(char c)
        Return a boolean value indicating whether the argument is a decimal digit (0-9).
        Parameters:
        c - The character to check

      • isHexDigit

        private static boolean isHexDigit​(char c)
        Return a boolean value indicating whether the argument is a hexadecimal digit (0-9, A-F, a-f).
        Parameters:
        c - The character to check

      • isNameStartChar

        private static boolean isNameStartChar​(char c)
        Return a boolean value indicating whether the argument is a valid name start character, ie. can start a NAME as defined by XSL.
        Parameters:
        c - The character to check

      • isNameChar

        private static boolean isNameChar​(char c)
        Return a boolean value indicating whether the argument is a valid name character, ie. can occur in a NAME as defined by XSL.
        Parameters:
        c - The character to check