Function GetUri

Source/ThirdParty/rapidjson/pointer.h:540–577

Compute the in-scope URI for a subtree. For use with JSON pointers into JSON schema documents. ! \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. \param rootUri Root URI \param unresolvedTokenIndex If the pointer cannot resolve a token in the pointer, this parameter can obtain the index of unresolved token. \para

        Use unresolvedTokenIndex to retrieve the token index.
    */
    UriType GetUri(ValueType& root, const UriType& rootUri, size_t* unresolvedTokenIndex = 0, Allocator* allocator = 0) const {
        static const Ch kIdString[] = { 'i', 'd', '\0' };
        static const ValueType kIdValue(kIdString, 2);
        UriType base = UriType(rootUri, allocator);
        RAPIDJSON_ASSERT(IsValid());
        ValueType* v = &root;
        for (const Token *t = tokens_; t != tokens_ + tokenCount_; ++t) {
            switch (v->GetType()) {
                case kObjectType:
                {
                    // See if we have an id, and if so resolve with the current base
                    typename ValueType::MemberIterator m = v->FindMember(kIdValue);
                    if (m != v->MemberEnd() && (m->value).IsString()) {
                        UriType here = UriType(m->value, allocator).Resolve(base, allocator);
                        base = here;
                    }
                    m = v->FindMember(GenericValue<EncodingType>(GenericStringRef<Ch>(t->name, t->length)));
                    if (m == v->MemberEnd())
                        break;
                    v = &m->value;
                }
                  continue;
                case kArrayType:
                    if (t->index == kPointerInvalidIndex || t->index >= v->Size())
                        break;
                    v = &((*v)[t->index]);
                    continue;
                default:
                    break;
            }

            // Error: unresolved token
            if (unresolvedTokenIndex)
                *unresolvedTokenIndex = static_cast<size_t>(t - tokens_);
            return UriType(allocator);
        }
        return base;
    }

    UriType GetUri(const ValueType& root, const UriType& rootUri, size_t* unresolvedTokenIndex = 0, Allocator* allocator = 0) const {
      return GetUri(const_cast<ValueType&>(root), rootUri, unresolvedTokenIndex, allocator);