jflex

Class JFlexUnicodeMojo

java.lang.Object

org.apache.maven.plugin.AbstractMojo

jflex.JFlexUnicodeMojo

All Implemented Interfaces:

org.apache.maven.plugin.ContextEnabled, org.apache.maven.plugin.Mojo

public class JFlexUnicodeMojo
extends org.apache.maven.plugin.AbstractMojo

Generates source code for JFlex Unicode character property handling.

Field Summary

Fields inherited from interface org.apache.maven.plugin.Mojo

ROLE

Constructor Summary

Constructors

Constructor and Description
JFlexUnicodeMojo()

Method Summary

Methods

Modifier and Type

Method and Description

void

execute() Collects and validates Unicode versions to support from Unicode.org; finds the most recent updates for non-beta versions, so that JFlex scanner specs can specify major or major.minor Unicode versions as an optional parameter to the %unicode option. For each version: Downloads the following Unicode data files: UnicodeData(-X.X.X).txt PropertyAliases(-X.X.X).txt PropertyValueAliases(-X.X.X).txt DerivedCoreProperties(-X.X.X).txt Scripts(-X.X.X).txt Blocks(-X.X.X).txt PropList(-X.X.X).txt LineBreak(-X.X.X).txt GraphemeBreakProperty.txt SentenceBreakProperty.txt WordBreakProperty.txt DerivedAge.txt (the latest version's only) Parses the data files, extracting ranges of code points and property values associated with them (see The Unicode Character Property Model). Generates Java source for class UnicodeProperties: Has a constructor taking in a string representing the Unicode version given as parameter to the %unicode JFlex specification option. Has a default constructor that defaults the version of Unicode to that supported by the JRE, for JFlex specifications that have parameter-less %unicode options. Has per-Unicode-version compressed tables for each property value, which will be unpacked by the constructor for the selected Unicode version. Binds the Unicode-version-specific unpacked tables to code point ranges for named property values. Binds property value aliases, e.g.

Methods inherited from class org.apache.maven.plugin.AbstractMojo

getLog, getPluginContext, setLog, setPluginContext

Methods inherited from class java.lang.Object

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

Constructor Detail

JFlexUnicodeMojo

public JFlexUnicodeMojo()

Method Detail

execute

public void execute()
             throws org.apache.maven.plugin.MojoExecutionException,
                    org.apache.maven.plugin.MojoFailureException

1. Collects and validates Unicode versions to support from Unicode.org; finds the most recent updates for non-beta versions, so that JFlex scanner specs can specify major or major.minor Unicode versions as an optional parameter to the %unicode option.
2. For each version:
   1. Downloads the following Unicode data files:
      • UnicodeData(-X.X.X).txt
      • PropertyAliases(-X.X.X).txt
      • PropertyValueAliases(-X.X.X).txt
      • DerivedCoreProperties(-X.X.X).txt
      • Scripts(-X.X.X).txt
      • Blocks(-X.X.X).txt
      • PropList(-X.X.X).txt
      • LineBreak(-X.X.X).txt
      • GraphemeBreakProperty.txt
      • SentenceBreakProperty.txt
      • WordBreakProperty.txt
      • DerivedAge.txt (the latest version's only)
   2. Parses the data files, extracting ranges of code points and property values associated with them (see The Unicode Character Property Model).
3. Generates Java source for class UnicodeProperties:
   1. Has a constructor taking in a string representing the Unicode version given as parameter to the %unicode JFlex specification option.
   2. Has a default constructor that defaults the version of Unicode to that supported by the JRE, for JFlex specifications that have parameter-less %unicode options.
   3. Has per-Unicode-version compressed tables for each property value, which will be unpacked by the constructor for the selected Unicode version.
   4. Binds the Unicode-version-specific unpacked tables to code point ranges for named property values.
   5. Binds property value aliases, e.g. \p{Letter} for \p{L} (which is [\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}] ) - see Unicode General Category Property Values.
   6. Has Unicode-version-specific method maximumCodePoint():int.

Throws:

org.apache.maven.plugin.MojoExecutionException

org.apache.maven.plugin.MojoFailureException