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Diffstat (limited to 'tools/json_to_struct/element_generator.py')
-rw-r--r-- | tools/json_to_struct/element_generator.py | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/tools/json_to_struct/element_generator.py b/tools/json_to_struct/element_generator.py deleted file mode 100644 index 3a592d8..0000000 --- a/tools/json_to_struct/element_generator.py +++ /dev/null @@ -1,121 +0,0 @@ -# Copyright (c) 2012 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 json -import struct_generator - -def _JSONToCString16(json_string_literal): - """Converts a JSON string literal to a C++ UTF-16 string literal. This is - done by converting \\u#### to \\x####. - """ - c_string_literal = json_string_literal - escape_index = c_string_literal.find('\\') - while escape_index > 0: - if c_string_literal[escape_index + 1] == 'u': - # We close the C string literal after the 4 hex digits and reopen it right - # after, otherwise the Windows compiler will sometimes try to get more - # than 4 characters in the hex string. - c_string_literal = (c_string_literal[0:escape_index + 1] + 'x' + - c_string_literal[escape_index + 2:escape_index + 6] + '" L"' + - c_string_literal[escape_index + 6:]) - escape_index = c_string_literal.find('\\', escape_index + 6) - return c_string_literal - -def _GenerateString(content, lines): - """Generates an UTF-8 string to be included in a static structure initializer. - If content is not specified, uses NULL. - """ - if content is None: - lines.append(' NULL,') - else: - # json.dumps quotes the string and escape characters as required. - lines.append(' %s,' % json.dumps(content)) - -def _GenerateString16(content, lines): - """Generates an UTF-16 string to be included in a static structure - initializer. If content is not specified, uses NULL. - """ - if content is None: - lines.append(' NULL,') - else: - # json.dumps quotes the string and escape characters as required. - lines.append(' L%s,' % _JSONToCString16(json.dumps(content))) - -def _GenerateArray(field_info, content, lines): - """Generates an array to be included in a static structure initializer. If - content is not specified, uses NULL. The array is assigned to a temporary - variable which is initialized before the structure. - """ - if content is None: - lines.append(' NULL,') - lines.append(' 0,') # Size of the array. - return - - # Create a new array variable and use it in the structure initializer. - # This prohibits nested arrays. Add a clash detection and renaming mechanism - # to solve the problem. - var = 'array_%s' % field_info['field']; - lines.append(' %s,' % var) - lines.append(' %s,' % len(content)) # Size of the array. - # Generate the array content. - array_lines = [] - field_info['contents']['field'] = var; - array_lines.append(struct_generator.GenerateField( - field_info['contents']) + '[] = {') - for subcontent in content: - GenerateFieldContent(field_info['contents'], subcontent, array_lines) - array_lines.append('};') - # Prepend the generated array so it is initialized before the structure. - lines.reverse() - array_lines.reverse() - lines.extend(array_lines) - lines.reverse() - -def GenerateFieldContent(field_info, content, lines): - """Generate the content of a field to be included in the static structure - initializer. If the field's content is not specified, uses the default value - if one exists. - """ - if content is None: - content = field_info.get('default', None) - type = field_info['type'] - if type == 'int' or type == 'enum': - lines.append(' %s,' % content) - elif type == 'string': - _GenerateString(content, lines) - elif type == 'string16': - _GenerateString16(content, lines) - elif type == 'array': - _GenerateArray(field_info, content, lines) - else: - raise RuntimeError('Unknown field type "%s"' % type) - -def GenerateElement(type_name, schema, element_name, element): - """Generate the static structure initializer for one element. - """ - lines = []; - lines.append('const %s %s = {' % (type_name, element_name)); - for field_info in schema: - content = element.get(field_info['field'], None) - if (content == None and not field_info.get('optional', False)): - raise RuntimeError('Mandatory field "%s" omitted in element "%s".' % - (field_info['field'], element_name)) - GenerateFieldContent(field_info, content, lines) - lines.append('};') - return '\n'.join(lines) - -def GenerateElements(type_name, schema, description): - """Generate the static structure initializer for all the elements in the - description['elements'] dictionary, as well as for any variables in - description['int_variables']. - """ - result = []; - for var_name, value in description.get('int_variables', {}).items(): - result.append('const int %s = %s;' % (var_name, value)) - result.append('') - - for element_name, element in description.get('elements', {}).items(): - result.append(GenerateElement(type_name, schema, element_name, element)) - result.append('') - return '\n'.join(result) |