Initial code generation for features.

tools/json_schema_compiler/features_cc_generator.py

+# Copyright (c) 2013 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.
+
+import os.path
+
+from code import Code
+import cpp_util
+
+
+class CCGenerator(object):
+  def Generate(self, feature_defs, source_file):
+    return _Generator(feature_defs, source_file).Generate()
+
+
+class _Generator(object):
+  """A .cc generator for PermissionFeatures.
+  """
+  def __init__(self, feature_defs, source_file):
+    self._feature_defs = feature_defs
+    self._source_file = source_file
+    self._source_file_filename, _ = os.path.splitext(source_file)
+
+  def Generate(self):
+    """Generates a Code object for PermissionFeatures.
+    """
+    c = Code()
+    (c.Append(cpp_util.CHROMIUM_LICENSE)
+      .Append()
+      .Append(cpp_util.GENERATED_FEATURE_MESSAGE % self._source_file)
+      .Append()
+      .Append('#include <string>')
+      .Append()
+      .Append('#include "%s.h"' % self._source_file_filename)
+      .Append()
+      .Append('#include "base/logging.h"')
+      .Append()
+    )
+
+    # Generate the constructor.
+    (c.Append('PermissionFeatures::PermissionFeatures() {')
+      .Sblock()
+    )
+    for feature in self._feature_defs:
+      c.Append('_featureMap.insert(std::pair<std::string, '

[not at google - send to devlin, 2013/09/17 01:28:07]

feature_map_[%s] = %s

not

feature_map_.insert(..)

[dhnishi (use Chromium), 2013/09/17 18:17:47]

Done.

+                   'PermissionFeatures::ID>("%s", %s));'
+                       % (feature.name, cpp_util.ConstantName(feature.name)))
+    (c.Eblock()
+      .Append('}')
+      .Append()
+    )
+
+    # Generate the ToString function.
+    (c.Append('const char* PermissionFeatures::ToString('
+                  'PermissionFeatures::ID id) {')
+      .Sblock()
+      .Append('switch (id) {')
+      .Sblock()
+    )
+    for feature in self._feature_defs:
+      c.Append('case %s: return "%s";' %
+          (cpp_util.ConstantName(feature.name), feature.name))
+    (c.Append('case kUnknown: break;')
+      .Append('case kEnumBoundary: break;')
+      .Eblock()
+      .Append('}')
+      .Append('NOTREACHED();')
+      .Append('return "";')
+    )
+    (c.Eblock()
+      .Append('}')
+      .Append()
+    )
+
+    # Generate the FromString function.
+
+    (c.Append('PermissionFeatures::ID PermissionFeatures::FromString(' \
+                  'const std::string& id) {')
+      .Sblock()
+      .Append('std::map<std::string, PermissionFeatures::ID>::const_iterator it'
+                  ' = _featureMap.find(id);')
+      .Append('if (it == _featureMap.end())')
+      .Append('  return kUnknown;')
+      .Append('return it->second;')
+      .Eblock()
+      .Append('}')
+      .Append()
+    )
+
+    return c