Package com.adobe.agl.impl

Class CharTrie

java.lang.Object
com.adobe.agl.impl.Trie
com.adobe.agl.impl.CharTrie
public class CharTrie extends Trie
Trie implementation which stores data in char, 16 bits.
Since:
release 2.1, Jan 01 2002
See Also:

  • Constructor Details

    • CharTrie

      public CharTrie(InputStream inputStream, Trie.DataManipulate dataManipulate) throws IOException

      Creates a new Trie with the settings for the trie data.

      Unserialize the 32-bit-aligned input stream and use the data for the trie.

      Parameters:
      inputStream - file input stream to a ICU data file, containing the trie
      dataManipulate - object which provides methods to parse the char data
      Throws:
      IOException - thrown when data reading fails

    • CharTrie

      public CharTrie(int initialValue, int leadUnitValue, Trie.DataManipulate dataManipulate)
      Make a dummy CharTrie. A dummy trie is an empty runtime trie, used when a real data trie cannot be loaded. The trie always returns the initialValue, or the leadUnitValue for lead surrogate code points. The Latin-1 part is always set up to be linear.
      Parameters:
      initialValue - the initial value that is set for all code points
      leadUnitValue - the value for lead surrogate code _units_ that do not have associated supplementary data
      dataManipulate - object which provides methods to parse the char data

  • Method Details

    • putIndexData

      public void putIndexData(UCharacterProperty friend)
      Java friend implementation To store the index and data array into the argument.
      Parameters:
      friend - java friend UCharacterProperty object to store the array

    • getCodePointValue

      public final char getCodePointValue(int ch)
      Gets the value associated with the codepoint. If no value is associated with the codepoint, a default value will be returned.
      Parameters:
      ch - codepoint
      Returns:
      offset to data

    • getLeadValue

      public final char getLeadValue(char ch)
      Gets the value to the data which this lead surrogate character points to. Returned data may contain folding offset information for the next trailing surrogate character. This method does not guarantee correct results for trail surrogates.
      Parameters:
      ch - lead surrogate character
      Returns:
      data value

    • getBMPValue

      public final char getBMPValue(char ch)
      Get the value associated with the BMP code point. Lead surrogate code points are treated as normal code points, with unfolded values that may differ from getLeadValue() results.
      Parameters:
      ch - the input BMP code point
      Returns:
      trie data value associated with the BMP codepoint

    • getSurrogateValue

      public final char getSurrogateValue(char lead, char trail)
      Get the value associated with a pair of surrogates.
      Parameters:
      lead - a lead surrogate
      trail - a trail surrogate

    • getTrailValue

      public final char getTrailValue(int leadvalue, char trail)

      Get a value from a folding offset (from the value of a lead surrogate) and a trail surrogate.

      If the

      Parameters:
      leadvalue - value associated with the lead surrogate which contains the folding offset
      trail - surrogate
      Returns:
      trie data value associated with the trail character

    • getLatin1LinearValue

      public final char getLatin1LinearValue(char ch)

      Gets the latin 1 fast path value.

      Note this only works if latin 1 characters have their own linear array.

      Parameters:
      ch - latin 1 characters
      Returns:
      value associated with latin character

    • equals

      public boolean equals(Object other)
      Checks if the argument Trie has the same data as this Trie
      Overrides:
      equals in class Trie
      Parameters:
      other - Trie to check
      Returns:
      true if the argument Trie has the same data as this Trie, false otherwise