Method Read

Source/Tools/Flax.Build/ProjectInfo.cs:32–83

Reads the JSON representation of the object. The to read from. Type of the object. The serializer options. The object value.

(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)

        /// <param name="options">The serializer options.</param>
        /// <returns>The object value.</returns>
        public override Version? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.Null)
                return null;

            if (reader.TokenType == JsonTokenType.StartObject)
            {
                try
                {
                    reader.Read();
                    var values = new Dictionary<string, int>();
                    while (reader.TokenType == JsonTokenType.PropertyName)
                    {
                        var key = reader.GetString();
                        reader.Read();
                        var val = reader.GetInt32();
                        reader.Read();
                        values.Add(key, val);
                    }

                    values.TryGetValue("Major", out var major);
                    values.TryGetValue("Minor", out var minor);
                    if (!values.TryGetValue("Build", out var build))
                        build = -1;
                    if (!values.TryGetValue("Revision", out var revision))
                        revision = -1;

                    if (build <= 0)
                        return new Version(major, minor);
                    if (revision <= 0)
                        return new Version(major, minor, build);
                    return new Version(major, minor, build, revision);
                }
                catch (Exception ex)
                {
                    throw new Exception(string.Format("Error parsing version string: {0}", reader.GetString()), ex);
                }
            }

            if (reader.TokenType == JsonTokenType.String)
            {
                try
                {
                    return new Version((string)reader.GetString()!);
                }
                catch (Exception ex)
                {
                    throw new Exception(string.Format("Error parsing version string: {0}", reader.GetString()), ex);
                }
            }
            throw new Exception(string.Format("Unexpected token or value when parsing version. Token: {0}, Value: {1}", reader.TokenType, reader.GetString()));
        }

        /// <summary>
        /// Determines whether this instance can convert the specified object type.