java_library2.bucklet

# Compiles a Java library with additional compile-time dependencies
# that do not show up as transitive dependencies to java_library()
# or java_binary() rule that depends on this library.
#
# Example: servlet library needs to be compiled against servlet API
# but this dependency must not become a transitive dependency.
#
# java_library2(
#   name = 'gitiles-servlet',
#   srcs = SRCS,
#   resources = RSRC,
#   deps = DEPS,
#   compile_deps = ['//lib:servlet-api'],
#   visibility = ['PUBLIC'],
# )
# @See: https://github.com/facebook/buck/issues/63
#
def java_library2(
    name,
    srcs = [],
    resources = [],
    deps = [],
    compile_deps = [],
    visibility = []):
  c = name + '__compile'
  t = name + '__link'
  j = 'lib__%s__output/%s.jar' % (c, c)
  o = 'lib__%s__output/%s.jar' % (name, name)
  java_library(
    name = c,
    srcs = srcs,
    resources = resources,
    deps = deps + compile_deps,
    visibility = visibility,
  )
  # Break the dependency chain by passing the newly built
  # JAR to consumers through a prebuilt_jar().
  genrule(
    name = t,
    cmd = 'mkdir -p $(dirname $OUT);ln -s $SRCS $OUT',
    srcs = [genfile(j)],
    deps = [':' + c],
    out = o,
  )
  prebuilt_jar(
    name = name,
    binary_jar = genfile(o),
    deps = deps + [':' + t],
    visibility = visibility,
  )