80 lines
3.1 KiB
Markdown
80 lines
3.1 KiB
Markdown
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# gradle-plugin-jflex
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A Gradle plugin for [JFlex](http://jflex.de)
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## Usage
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plugins {
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id "org.xbib.gradle.plugin.jflex" version "1.4.0"
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}
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Gradle will look for your JFlex files in the source sets you specified.
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By default, it looks with the pattern `**/*.jflex` under `src/main/jflex`
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and `src/test/jflex`.
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You can set up the source sets like this:
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sourceSets {
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main {
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jflex {
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srcDir "src/main/jflex"
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}
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java {
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srcDir "$buildDir/my-generated-sources/jflex"
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}
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}
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}
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The lastJava `srcDir` definition will be used as the base for the JFLex target path.
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If not given, the JFlex target path for generated Java source follows the pattern:
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`${project.buildDir}/generated/sources/jflex`
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The JFlex target path will be added automatically to the java compile task source directory
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of the source set.
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## Parameter support
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The following parameters can be set in a global `jflex` extension
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in the gradle script. See also https://jflex.de/manual.html
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| Name | Description |
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| ------- | ---------- |
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| encoding | the file encoding |
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| rootDirectory | the root directory used by JFlex (modification discouraged since the directories are derived from gradle source set)
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| skel | uses external skeleton <file> in UTF-8 encoding. This is mainly for JFlex maintenance and special low level customisations. Use only when you know what you are doing! JFlex comes with a skeleton file in the src directory that reflects exactly the internal, pre-compiled skeleton and can be used with the skel option. |
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| verbose | display generation progress messages (disabled by default) |
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| jlex | tries even harder to comply to JLex interpretation of specs |
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| no_minimize | skip the DFA minimisation step during scanner generation |
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| no_backup | don't write backup files if this is true |
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| unused_warning | warn about unused macros (by default false) |
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| progress | progress dots will be printed (by default false) |
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| dot | If true, jflex will write graphviz .dot files for generated automata (by default, false) |
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| time | If true, jflex will print time statistics about the generation process (by default false) |
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| dump | If true, you will be flooded with information, e.g. dfa tables (by default, false) |
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| legacy_dot | dot (.) meta character matches [^\n] instead of [^\n\r\u000B\u000C\u0085\u2028\u2029] |
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| statistics | print output statistics (by default, false) |
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## Credits
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gradle-plugin-jflex is a plugin based on
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[gradle-jflex-plugin](https://github.com/thomaslee/gradle-jflex-plugin)
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which was written by [Tom Lee](http://tomlee.co).
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# License
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Copyright (C) 2015-2020 Jörg Prante
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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