Class PropertyTokenizer

java.lang.Object
org.apache.fop.fo.expr.PropertyTokenizer
Direct Known Subclasses:
PropertyParser
class PropertyTokenizer extends 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.

  • Field Details

  • Constructor Details

    • PropertyTokenizer

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

  • Method Details

    • 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.

    • nextDecimalPoint

      private void nextDecimalPoint() throws PropertyException
      Throws:
      PropertyException

    • nextColor

      private void nextColor() throws PropertyException
      Throws:
      PropertyException

    • 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