lein-zinc

A Leiningen plugin to compile scala and java source code with Typesafe zinc, which is a stand-alone version of scala incremental compiler forked from sbt.

Update

• sources and test-sources are removed from :inputs properties, and observe Leiningen's standard source-paths, java-source-paths, and test-paths from version 0.1.5. The default directories are src/java and src/scala for main source, and test for test sources. Please specify the directory if you want to place the source code somewhere other than the defaults.

Usage

• Specify scala and java source paths in project.clj.

:source-paths ["src/clojure"]
:java-source-paths ["src/java" "src/scala"]
:test-paths ["test/clojure" "test/java" "test/scala"]

• Put scala source code under src/scala, and test code under test/scala.
• Put the latest version shown above into the :plugins vector of your project.clj.
• Add [org.scala-lang/scala-library "your_scala_version"] to :dependencies of your project.clj.
• To automatically run zinc compiler in regular life cycle of leiningen, add ["zinc" "compile"] to :prep-tasks.
• Alternatively, run the task directly from the command line.
  

    $ lein zinc

It triggers compilation of scala source and then scala test source.

You may get java.lang.OutOfMemoryError: PermGen space in JVM prior to Java 8. It can be worked around by adding JVM options.

   $ LEIN_JVM_OPTS="-XX:MaxPermSize=256m" lein zinc

Sub tasks

Compile scala and java main source code only.

$ lein zinc zinc-compile 

Compile scala and java test source code only.

$ lein zinc zinc-test-compile 

Monitor the changes made in main source and compile continuously. Ctrl-C to stop the task. You may want to run 'test-cc' task in a separate terminal as it doesn't compile test source.

$ lein zinc cc

Monitor the changes made in test source and compile continuously. Ctrl-C to stop the task. You may want to run 'cc' task in a separate terminal as it doesn't compile main source.

$ lein zinc test-cc

Customize behavior

• Create a profile containing :zinc-options map.
• :zinc-options map may contain sub-maps :logging, :inputs, :incremental, and/or :sbt-version.
• See "Available Options" below for the complete guide.

(defproject test-project "0.1.0-SNAPSHOT"
  :description "test project using lein-zinc"
  :url "http://example.com/FIXME"
  :license {:name "Eclipse Public License"
            :url "http://www.eclipse.org/legal/epl-v10.html"}
            ;; specify lein-zinc plugin.
  :plugins [[lein-zinc "see_the_latest_version_above"]]
  :dependencies [[org.clojure/clojure "1.6.0"]
                 ;; scala-library is required and the version specified here 
                 ;; is used to compile if it is not overridden with 'scala-version'
                 ;; option. See below.
                 [org.scala-lang/scala-library "2.11.4"]]
  ;; Specifying "zinc" here triggers scala main/source compilation on invoking
  ;; other tasks.
  :prep-tasks ["zinc" "compile"]
  ;; Most of the options available in zinc compiler are available here. 
  :profiles {:zinc-custom-options 
             {:zinc-options 
              {:logging 
               {:level     "debug"
                :colorize? false}
               :inputs 
                {:classes               "target/classes"
                 :test-classes          "target/test-classes"
                 :scalac-options        ["-unchecked"]
                 :javac-options         ["-deprecation" "-g"]
                 :analysis-cache        "target/analysis/compile"
                 :test-analysis-cache   "target/analysis/test-compile"
                 :analysis-map          {"src_dir_of_other_project" 
                                         "analysis-cache_of_other_project"}
                 }
               :incremental
                {:transitive-step         3
                 :recompile-all-fraction  0.5
                 :relations-debug?        false
                 :api-debug?              false
                 :api-diff-context-size   5
                 :api-dump-directory      "target/api"
                 :transactional?          true
                 :backup                  "target/backup"
                 }
               :continuous-compile 
               {:interval-in-ms          2000}}}

            ;; It is possible to override scala and sbt version.
             :custom-scala-version
              {:scala-version "2.10.4"
               :sbt-version "0.13.5"
               :zinc-options 
                {:logging
                 {:level "info"}}}})

Available Options

Output options:
  :logging
    :level "level"               Set log level (debug|info|warn|error)
    :color?                      Set color in logging

Compile options:
  :inputs
    :classes "dir"               Destination for compiled classes
    :scalac-options ["opt"...]   Options passed into Scala compiler
    :javac-options ["opt"...]    Options passed into Java compiler
    :compile-order "order"       Compile order for Scala and Java sources
                                 (Mixed|JavaThenScala|ScalaThenJava)
    :analysis-cache "file"       Cache file for compile analysis
    :test-analysis-cache "file"  Cache file for test compile analysis
    :analysis-map {"f" "f",...}  Upstream analysis mapping (file:file,...)

Incremental compiler options:
  :incremental
    :transitive-step <n>         Steps before transitive closure
    :recompile-all-fraction <x>  Limit before recompiling all sources
    :relations-debug?            Enable debug logging of analysis relations
    :api-debug?                  Enable analysis API debugging
    :api-dump-directory "dir"    Destination for analysis API dump
    :api-diff-context-size <n>   Diff context size (in lines) for API debug
    :transactional?              Restore previous class files on failure
    :backup "dir"                Backup location (if transactional)
    :name-hashing?               Enable improved (experimental) incremental 
                                 compilation algorithm

Continuous compiling options:
  :continuous-compile
    :interval-in-ms              Interval to check the changes in source dir

General compiler options;
  :scala-version                 Override scala-library version in project.clj
  :sbt-version                   Default is 0.13.7.
  :fork-java?                    Java compiler runs in a separate process

License

Copyright © 2015 Kenji Nakamura

Distributed under the Eclipse Public License either version 1.0 or any later version.