1# Copyright (c) 2012 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5def _GenerateArrayField(field_info):
6  """Generate a string defining an array field in a C structure.
7  """
8  contents = field_info['contents']
9  contents['field'] = '* ' + field_info['field']
10  if contents['type'] == 'array':
11    raise RuntimeError('Nested arrays are not supported.')
12  return (GenerateField(contents) + ';\n' +
13          '  const size_t %s_size') % field_info['field'];
14
15def GenerateField(field_info):
16  """Generate a string defining a field of the type specified by
17  field_info['type'] in a C structure.
18  """
19  field = field_info['field']
20  type = field_info['type']
21  if type == 'int':
22    return 'const int %s' % field
23  elif type == 'string':
24    return 'const char* const %s' % field
25  elif type == 'string16':
26    return 'const wchar_t* const %s' % field
27  elif type == 'enum':
28    return 'const %s %s' % (field_info['ctype'], field)
29  elif type == 'array':
30    return _GenerateArrayField(field_info)
31  else:
32    raise RuntimeError('Unknown field type "%s"' % type)
33
34def GenerateStruct(type_name, schema):
35  """Generate a string defining a structure containing the fields specified in
36  the schema list.
37  """
38  lines = [];
39  lines.append('struct %s {' % type_name)
40  for field_info in schema:
41    lines.append('  ' + GenerateField(field_info) + ';')
42  lines.append('};');
43  return '\n'.join(lines) + '\n';
44