Rewrite generate-bindings.pl in Python

Source/bindings/scripts/idl-to-json.pl

-#!/usr/bin/env python
+#!/usr/bin/perl -w -I../../core/scripts
 # Copyright (C) 2013 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.
 
-import os.path
-import sys
 
-import in_generator
-import make_runtime_features
+# Wrapper script to parse a file and dump to stdout as JSON
 
+use strict;
+use warnings;
 
-# We want exactly the same parsing as RuntimeFeatureWriter
-# but generate different files.
-class InternalRuntimeFlagsWriter(make_runtime_features.RuntimeFeatureWriter):
-    class_name = "InternalRuntimeFlags"
+use Cwd;
+use Getopt::Long;
+use JSON -convert_blessed_universally;  # IDLParser returns blessed objects
 
-    def generate_idl(self):
-        return {
-            'features': self._features,
-        }
+use IDLParser;
 
-    def generate_header(self):
-        return {
-            'features': self._features,
-            'feature_sets': self._feature_sets(),
-        }
+# Get options
+my $defines;
+my $preprocessor;
+my $verbose;
 
-    def generate_implementation(self):
-        return None
+GetOptions('defines=s' => \$defines,
+           'preprocessor=s' => \$preprocessor,
+           'verbose' => \$verbose);
 
+my $targetIdlFile = $ARGV[0];
 
-if __name__ == "__main__":
-    in_generator.Maker(InternalRuntimeFlagsWriter).main(sys.argv)
+$defines = "" unless defined($defines);
+die('Must specify input file.') unless defined($targetIdlFile);
+$targetIdlFile = Cwd::realpath($targetIdlFile);
+
+if ($verbose) {
+    print "$targetIdlFile\n";
+}
+
+# Parse file
+my $targetParser = IDLParser->new(!$verbose);
+my $targetDocument = $targetParser->Parse($targetIdlFile, $defines, $preprocessor);
+
+# Convert to JSON
+my $json = JSON->new->utf8;
+$json = $json->allow_blessed->convert_blessed();
+my $json_text= $json->encode($targetDocument);
+print $json_text . "\n";