bool HandleRefSchema()

in rapidjson/schema.h [1458:1502]
41 lines of code
16 McCabe index (conditional complexity)

    bool HandleRefSchema(const PointerType& source, const SchemaType** schema, const ValueType& v, const ValueType& document) {
        static const Ch kRefString[] = { '$', 'r', 'e', 'f', '\0' };
        static const ValueType kRefValue(kRefString, 4);

        typename ValueType::ConstMemberIterator itr = v.FindMember(kRefValue);
        if (itr == v.MemberEnd())
            return false;

        if (itr->value.IsString()) {
            SizeType len = itr->value.GetStringLength();
            if (len > 0) {
                const Ch* s = itr->value.GetString();
                SizeType i = 0;
                while (i < len && s[i] != '#') // Find the first #
                    i++;

                if (i > 0) { // Remote reference, resolve immediately
                    if (remoteProvider_) {
                        if (const GenericSchemaDocument* remoteDocument = remoteProvider_->GetRemoteDocument(s, i - 1)) {
                            PointerType pointer(&s[i], len - i, allocator_);
                            if (pointer.IsValid()) {
                                if (const SchemaType* sc = remoteDocument->GetSchema(pointer)) {
                                    if (schema)
                                        *schema = sc;
                                    return true;
                                }
                            }
                        }
                    }
                }
                else if (s[i] == '#') { // Local reference, defer resolution
                    PointerType pointer(&s[i], len - i, allocator_);
                    if (pointer.IsValid()) {
                        if (const ValueType* nv = pointer.Get(document))
                            if (HandleRefSchema(source, schema, *nv, document))
                                return true;

                        new (schemaRef_.template Push<SchemaRefEntry>()) SchemaRefEntry(source, pointer, schema, allocator_);
                        return true;
                    }
                }
            }
        }
        return false;
    }