const Value& Value::operator[](ArrayIndex index) const {
JSON_ASSERT_MESSAGE(
type_ == nullValue || type_ == arrayValue,
"in Json::Value::operator[](ArrayIndex)const: requires arrayValue");
if (type_ == nullValue)
return nullSingleton();
CZString key(index);
ObjectValues::const_iterator it = value_.map_->find(key);
if (it == value_.map_->end())
return nullSingleton();
return (*it).second;
}
Value Value::removeMember(const char* key)
{
JSON_ASSERT_MESSAGE(type_ == nullValue || type_ == objectValue,
"in Json::Value::removeMember(): requires objectValue");
if (type_ == nullValue)
return nullSingleton();
Value removed; // null
removeMember(key, key + strlen(key), &removed);
return removed; // still null if removeMember() did nothing
}
Value& Value::operator[](ArrayIndex index) {
JSON_ASSERT_MESSAGE(
type_ == nullValue || type_ == arrayValue,
"in Json::Value::operator[](ArrayIndex): requires arrayValue");
if (type_ == nullValue)
*this = Value(arrayValue);
CZString key(index);
ObjectValues::iterator it = value_.map_->lower_bound(key);
if (it != value_.map_->end() && (*it).first == key)
return (*it).second;
ObjectValues::value_type defaultValue(key, nullSingleton());
it = value_.map_->insert(it, defaultValue);
return (*it).second;
}
// Access an object value by name, create a null member if it does not exist.
// @pre Type of '*this' is object or null.
// @param key is null-terminated.
Value& Value::resolveReference(const char* key) {
JSON_ASSERT_MESSAGE(
type_ == nullValue || type_ == objectValue,
"in Json::Value::resolveReference(): requires objectValue");
if (type_ == nullValue)
*this = Value(objectValue);
CZString actualKey(
key, static_cast<unsigned>(strlen(key)), CZString::noDuplication); // NOTE!
ObjectValues::iterator it = value_.map_->lower_bound(actualKey);
if (it != value_.map_->end() && (*it).first == actualKey)
return (*it).second;
ObjectValues::value_type defaultValue(actualKey, nullSingleton());
it = value_.map_->insert(it, defaultValue);
Value& value = (*it).second;
return value;
}
// @param key is not null-terminated.
Value& Value::resolveReference(char const* key, char const* end) {
JSON_ASSERT_MESSAGE(
type() == nullValue || type() == objectValue,
"in Json::Value::resolveReference(key, end): requires objectValue");
if (type() == nullValue)
*this = Value(objectValue);
CZString actualKey(key, static_cast<unsigned>(end - key),
CZString::duplicateOnCopy);
auto it = value_.map_->lower_bound(actualKey);
if (it != value_.map_->end() && (*it).first == actualKey)
return (*it).second;
ObjectValues::value_type defaultValue(actualKey, nullSingleton());
it = value_.map_->insert(it, defaultValue);
Value& value = (*it).second;
return value;
}
Value const& Value::operator[](CppTL::ConstString const& key) const
{
Value const* found = find(key.c_str(), key.end_c_str());
if (!found) return nullSingleton();
return *found;
}
Value const& Value::operator[](JSONCPP_STRING const& key) const
{
Value const* found = find(key.data(), key.data() + key.length());
if (!found) return nullSingleton();
return *found;
}
const Value& Value::operator[](const char* key) const
{
Value const* found = find(key, key + strlen(key));
if (!found) return nullSingleton();
return *found;
}
Value Value::get(ArrayIndex index, const Value& defaultValue) const {
const Value* value = &((*this)[index]);
return value == &nullSingleton() ? defaultValue : *value;
}
