const Value &
Value::operator[]( const char *key ) const
{
JSON_ASSERT( type_ == nullValue || type_ == objectValue );
if ( type_ == nullValue )
return null;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
CZString actualKey( key, CZString::noDuplication );
ObjectValues::const_iterator it = value_.map_->find( actualKey );
if ( it == value_.map_->end() )
return null;
return (*it).second;
#else
const Value *value = value_.map_->find( key );
return value ? *value : null;
#endif
}
// @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;
}
// 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;
}
Value &Value::resolveReference(const char *key, bool isStatic) {
JSON_ASSERT(type_ == nullValue || type_ == objectValue);
if (type_ == nullValue)
*this = Value(objectValue);
#ifndef JSON_VALUE_USE_INTERNAL_MAP
CZString actualKey(key, isStatic ? CZString::noDuplication : CZString::duplicateOnCopy);
ObjectValues::iterator it = value_.map_->lower_bound(actualKey);
if (it != value_.map_->end() && (*it).first == actualKey)
return (*it).second;
ObjectValues::value_type defaultValue(actualKey, null);
it = value_.map_->insert(it, defaultValue);
Value &value = (*it).second;
return value;
#else
return value_.map_->resolveReference(key, isStatic);
#endif
}
bool Value::removeMember(const char* begin, const char* end, Value* removed) {
if (type_ != objectValue) {
return false;
}
CZString actualKey(begin, static_cast<unsigned>(end - begin),
CZString::noDuplication);
ObjectValues::iterator it = value_.map_->find(actualKey);
if (it == value_.map_->end())
return false;
if (removed)
#if JSON_HAS_RVALUE_REFERENCES
*removed = std::move(it->second);
#else
*removed = it->second;
#endif
value_.map_->erase(it);
return true;
}
Value Value::removeMember(const char *key) {
JSON_ASSERT(type_ == nullValue || type_ == objectValue);
if (type_ == nullValue)
return null;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
CZString actualKey(key, CZString::noDuplication);
ObjectValues::iterator it = value_.map_->find(actualKey);
if (it == value_.map_->end())
return null;
Value old(it->second);
value_.map_->erase(it);
return old;
#else
Value *value = value_.map_->find(key);
if (value) {
Value old(*value);
value_.map_.remove(key);
return old;
} else {
return null;
}
#endif
}
