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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
5API_UTIL_NAMESPACE = 'json_schema_compiler::util'
6
7class UtilCCHelper(object):
8  """A util class that generates code that uses
9  tools/json_schema_compiler/util.cc.
10  """
11  def __init__(self, type_manager):
12    self._type_manager = type_manager
13
14  def PopulateArrayFromDictionary(self, array_prop, src, name, dst):
15    """Generates code to get an array from a src.name into dst.
16
17    src: DictionaryValue*
18    dst: std::vector or scoped_ptr<std::vector>
19    """
20    prop = array_prop.item_type
21    sub = {
22        'namespace': API_UTIL_NAMESPACE,
23        'name': name,
24        'src': src,
25        'dst': dst,
26    }
27
28    sub['type'] = self._type_manager.GetCppType(prop),
29    if array_prop.optional:
30      val = ('%(namespace)s::PopulateOptionalArrayFromDictionary'
31          '(*%(src)s, "%(name)s", &%(dst)s)')
32    else:
33      val = ('%(namespace)s::PopulateArrayFromDictionary'
34          '(*%(src)s, "%(name)s", &%(dst)s)')
35
36    return val % sub
37
38  def PopulateArrayFromList(self, array_prop, src, dst, optional):
39    """Generates code to get an array from src into dst.
40
41    src: ListValue*
42    dst: std::vector or scoped_ptr<std::vector>
43    """
44    prop = array_prop.item_type
45    sub = {
46        'namespace': API_UTIL_NAMESPACE,
47        'src': src,
48        'dst': dst,
49        'type': self._type_manager.GetCppType(prop),
50    }
51
52    if optional:
53      val = '%(namespace)s::PopulateOptionalArrayFromList(*%(src)s, &%(dst)s)'
54    else:
55      val = '%(namespace)s::PopulateArrayFromList(*%(src)s, &%(dst)s)'
56
57    return val % sub
58
59  def CreateValueFromArray(self, array_prop, src, optional):
60    """Generates code to create a scoped_pt<Value> from the array at src.
61
62    src: std::vector or scoped_ptr<std::vector>
63    """
64    prop = array_prop.item_type
65    sub = {
66        'namespace': API_UTIL_NAMESPACE,
67        'src': src,
68        'type': self._type_manager.GetCppType(prop),
69    }
70
71    if optional:
72      val = '%(namespace)s::CreateValueFromOptionalArray(%(src)s)'
73    else:
74      val = '%(namespace)s::CreateValueFromArray(%(src)s)'
75
76    return val % sub
77
78  def GetIncludePath(self):
79    return '#include "tools/json_schema_compiler/util.h"'
80
81  def GetValueTypeString(self, value, is_ptr=False):
82    call = '.GetType()'
83    if is_ptr:
84      call = '->GetType()'
85    return 'json_schema_compiler::util::ValueTypeToString(%s%s)' % (value, call)
86