Add a new bindings2/scripts directory for Dart bindings

sky/engine/bindings2/scripts/compiler.py

Index: sky/engine/bindings2/scripts/compiler.py
diff --git a/sky/engine/bindings2/scripts/compiler.py b/sky/engine/bindings2/scripts/compiler.py
new file mode 100755
index 0000000000000000000000000000000000000000..26c93d90c49c7a89d1c8b3de7b71fcc1d8f00d02
--- /dev/null
+++ b/sky/engine/bindings2/scripts/compiler.py
@@ -0,0 +1,142 @@
+#!/usr/bin/python
+# Copyright (C) 2014 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Compile an .idl file to Dart bindings (.h and .cpp files).
+
+Design doc: ??????
+"""
+
+from optparse import OptionParser
+import os
+import sys
+
+from dart_compiler import IdlCompiler
+from code_generator_dart import CodeGeneratorDart
+
+
+def parse_options():
+    parser = OptionParser()
+    parser.add_option('--output-directory')
+    parser.add_option('--interfaces-info-file')
+    parser.add_option('--write-file-only-if-changed', type='int', default='1')
+    parser.add_option('--generate-dart-blink',
+                      action='append',
+                      type='string',
+                      dest='blink_global_entries',
+                      nargs=2,
+                      help="Pickle file directory and idl file list (dart:blink)")
+
+    parser.add_option('--generate-globals',
+                      action='append',
+                      type='string',
+                      dest='global_entries',
+                      nargs=2,
+                      help="Pickle file directory and idl file list (global class table)")
+
+    # ensure output comes last, so command line easy to parse via regexes
+    parser.disable_interspersed_args()
+
+    options, args = parser.parse_args()
+    if options.output_directory is None:
+        parser.error('Must specify output directory using --output-directory.')
+    options.write_file_only_if_changed = bool(options.write_file_only_if_changed)
+    if bool(options.global_entries) or bool(options.blink_global_entries):
+        return options, None
+    if len(args) != 1:
+        parser.error('Must specify exactly 1 input file as argument, but %d given.' % len(args))
+    filename = os.path.realpath(args[0])
+    return options, filename
+
+
+def idl_filename_to_interface_name(idl_filename):
+    basename = os.path.basename(idl_filename)
+    interface_name, _ = os.path.splitext(basename)
+    return interface_name
+
+
+class IdlCompilerDart(IdlCompiler):
+    def __init__(self, *args, **kwargs):
+        IdlCompiler.__init__(self, *args, **kwargs)
+
+        interfaces_info = self.interfaces_info
+        self.output_directory = self.output_directory
+
+        self.code_generator = CodeGeneratorDart(interfaces_info, self.output_directory)
+
+    def compile_file(self, idl_filename):
+        interface_name = idl_filename_to_interface_name(idl_filename)
+        header_filename = os.path.join(self.output_directory,
+                                       'Dart%s.h' % interface_name)
+        cpp_filename = os.path.join(self.output_directory,
+                                    'Dart%s.cpp' % interface_name)
+        dart_filename = os.path.join(self.output_directory,
+                                       '%s.dart' % interface_name)
+        output_paths = (header_filename, cpp_filename, dart_filename)
+        self.compile_and_write(idl_filename, output_paths)
+
+    def generate_global(self, global_entries):
+        expanded_global_entries = []
+        for (directory, file_list_file) in global_entries:
+            with open(file_list_file) as input_file:
+                idl_file_list = sorted([line.rstrip('\n')
+                                        for line in input_file])
+            expanded_global_entries.append((directory, idl_file_list))
+        global_header_filename = os.path.join(self.output_directory, 'DartGlobal.h')
+        global_cpp_filename = os.path.join(self.output_directory, 'DartGlobal.cpp')
+        self.generate_global_and_write(expanded_global_entries,
+                                       (global_header_filename, global_cpp_filename))
+
+    def generate_dart_blink(self, global_entries):
+        global_dart_blink_filename = os.path.join(self.output_directory,
+                                                  'sky_core.dart')
+        expanded_global_entries = []
+        for (directory, file_list_file) in global_entries:
+            with open(file_list_file) as input_file:
+                idl_file_list = sorted([line.rstrip('\n')
+                                        for line in input_file])
+            expanded_global_entries.append((directory, idl_file_list))
+        self.generate_dart_blink_and_write(expanded_global_entries,
+                                           global_dart_blink_filename)
+
+
+def main():
+    options, filename = parse_options()
+    idl_compiler = IdlCompilerDart(options.output_directory,
+                                   interfaces_info_filename=options.interfaces_info_file,
+                                   only_if_changed=options.write_file_only_if_changed)
+    if bool(options.global_entries):
+        idl_compiler.generate_global(options.global_entries)
+    elif bool(options.blink_global_entries):
+        idl_compiler.generate_dart_blink(options.blink_global_entries)
+    else:
+        idl_compiler.compile_file(filename)
+
+
+if __name__ == '__main__':
+    sys.exit(main())