New C++ -> Java enum build rule + parser/generator.

build/android/java_cpp_enum.gypi

Index: build/android/java_cpp_enum.gypi
diff --git a/build/android/java_cpp_enum.gypi b/build/android/java_cpp_enum.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..602431ccdfb6004146f5c10d00492dfaa96aadf5
--- /dev/null
+++ b/build/android/java_cpp_enum.gypi
@@ -0,0 +1,69 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# This file is meant to be included into a target to provide a rule
+# to generate Java source files from templates that are processed

[Yaron, 2014/08/20 05:52:02]

Could use a little more description as it's more strict thant hat.

[mkosiba (inactive), 2014/09/02 16:00:57]

Done.

+# through a Python script.
+#
+# To use this, create a gyp target with the following form:
+#  {
+#    'target_name': 'android_net_java_constants',

[Yaron, 2014/08/20 05:52:02]

The first example of this, isn't using this structure of name. Consider
revising.

[mkosiba (inactive), 2014/09/02 16:00:57]

Done.

+#    'type': 'none',
+#    'sources': [
+#      'net/base/certificate_mime_type_list.h'
+#    ],
+#    'variables': [
+#      'package_name': 'org/chromium/ui',

[Yaron, 2014/08/20 05:52:02]

Maybe this is copied from elsewhere, but this should be org/chromium/net to be
consitent.

[mkosiba (inactive), 2014/09/02 16:00:57]

Done.

+#      'class_name': 'CertificateMimeTypeList',
+#    ],
+#    'includes': [ '../build/android/java_cpp_enum.gypi' ],
+#  },
+#
+
+{
+  # Location where all generated Java sources will be placed.
+  'variables': {
+    'output_dir': '<(SHARED_INTERMEDIATE_DIR)/templates/<(package_name)',
+  },
+  'direct_dependent_settings': {
+    'variables': {
+      # Ensure that the output directory is used in the class path
+      # when building targets that depend on this one.
+      'generated_src_dirs': [
+        '<(output_dir)/',
+      ],
+      # Ensure dependents are rebuilt when sources for this rule change.
+      'additional_input_paths': [
+        '<@(_sources)',
+      ],
+    },
+  },
+  # Define a single rule that will be apply to each file listed in 'sources'.
+  'rules': [
+    {
+      'rule_name': 'generate_java_constants',
+      'extension': 'h',
+      'variables': {
+        'output_path': '<(output_dir)/<(class_name).java',
+      },
+      'inputs': [
+        '<(DEPTH)/build/android/gyp/util/build_utils.py',
+        '<(DEPTH)/build/android/gyp/enum_preprocess.py',
+        '<@(_sources)',
+      ],
+      'outputs': [
+        '<(output_path)',
+      ],
+      'action': [
+        'python', '<(DEPTH)/build/android/gyp/enum_preprocess.py',
+        '--output=<(output_path)',
+        '--package=<(package_name)',
+        '--class_name=<(class_name)',
+        '<(RULE_INPUT_PATH)',
+      ],
+      'message': 'Generating Java from cpp header <(RULE_INPUT_PATH)',
+    }
+  ],
+}
+