gnu: Add java-asm.

* gnu/packages/java.scm (java-asm): New variable.

gnu/packages/java.scm

@@ -1262,3 +1262,46 @@ It has its foundation in the @code{org.codehaus.plexus.utils.interpolation}
 package within @code{plexus-utils}, but has been separated in order to allow
 these two libraries to vary independently of one another.")
     (license license:asl2.0)))
+
+(define-public java-asm
+  (package
+    (name "java-asm")
+    (version "5.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "http://download.forge.ow2.org/asm/"
+                                  "asm-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0kxvmv5275rnjl7jv0442k3wjnq03ngkb7sghs78avf45pzm4qgr"))))
+    (build-system ant-build-system)
+    (arguments
+     `(#:build-target "compile"
+       ;; The tests require an old version of Janino, which no longer compiles
+       ;; with the JDK7.
+       #:tests? #f
+       ;; We don't need these extra ant tasks, but the build system asks us to
+       ;; provide a path anyway.
+       #:make-flags (list (string-append "-Dobjectweb.ant.tasks.path=foo"))
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'install 'build-jars
+           (lambda* (#:key make-flags #:allow-other-keys)
+             ;; We cannot use the "jar" target because it depends on a couple
+             ;; of unpackaged, complicated tools.
+             (mkdir "dist")
+             (zero? (system* "jar"
+                             "-cf" (string-append "dist/asm-" ,version ".jar")
+                             "-C" "output/build/tmp" "."))))
+         (replace 'install
+           (install-jars "dist")))))
+    (native-inputs
+     `(("java-junit" ,java-junit)))
+    (home-page "http://asm.ow2.org/")
+    (synopsis "Very small and fast Java bytecode manipulation framework")
+    (description "ASM is an all purpose Java bytecode manipulation and
+analysis framework.  It can be used to modify existing classes or dynamically
+generate classes, directly in binary form.  The provided common
+transformations and analysis algorithms allow to easily assemble custom
+complex transformations and code analysis tools.")
+    (license license:bsd-3)))