/// <summary>
/// Indicates whether this instance and a specified object are equal.
/// </summary>
/// <param name="other">The object to compare with the current instance.</param>
/// <returns>true if obj and this instance represent the same value; otherwise, false.</returns>
public bool Equals(JsonObjectNode other)
{
if (other is null)
{
return(false);
}
return(AtomicNumber == other.TryGetInt32Value("number") &&
Symbol == other.TryGetStringValue("symbol"));
}
/// <inheritdoc />
public override ChemicalElement Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
if (reader.TokenType == JsonTokenType.Null)
{
return(null);
}
try
{
if (reader.TokenType == JsonTokenType.Number)
{
return(ChemicalElement.Get(reader.GetInt32()));
}
}
catch (FormatException ex)
{
throw new JsonException("Expect a valid element symbol or the atomic numbers.", ex);
}
if (reader.TokenType == JsonTokenType.String)
{
return(ChemicalElement.Get(reader.GetString()));
}
if (reader.TokenType != JsonTokenType.StartObject)
{
throw new JsonException("The format is not correct.", new FormatException("The value should be a date time JSON token format."));
}
var obj = new JsonObjectNode();
obj.SetRange(ref reader);
var z = obj.TryGetInt32Value("number") ?? obj.TryGetInt32Value("z");
var s = obj.TryGetStringValue("symbol")?.Trim();
var n = obj.TryGetStringValue("name_en")?.Trim() ?? obj.TryGetStringValue("name")?.Trim();
var w = obj.TryGetDoubleValue("weight");
ChemicalElement ele = null;
if (z.HasValue && z != 0)
{
if (z.Value < 1)
{
return(null);
}
ele = ChemicalElement.Get(z.Value);
}
else if (!string.IsNullOrEmpty(s))
{
ele = ChemicalElement.Get(s);
}
else if (!string.IsNullOrEmpty(n))
{
ele = ChemicalElement.Where(ele => n.Equals(ele.EnglishName, StringComparison.Ordinal)).FirstOrDefault();
if (ele is null && n.Length < 4)
{
ele = ChemicalElement.Get(n);
}
}
else
{
return(null);
}
if (ele != null &&
(!z.HasValue || ele.AtomicNumber == z.Value) &&
(string.IsNullOrEmpty(s) || s.Equals(ele.Symbol, StringComparison.OrdinalIgnoreCase)) &&
(!w.HasValue || (!ele.HasAtomicWeight && double.IsNaN(w.Value)) || (ele.HasAtomicWeight && !double.IsNaN(w.Value) && Math.Abs(ele.AtomicWeight - w.Value) < 0.000000001)))
{
return(ele);
}
if (!z.HasValue || z.Value < 1 || string.IsNullOrEmpty(s))
{
return(null);
}
return(string.IsNullOrEmpty(n)
? new ChemicalElement(z.Value, s, null, w.HasValue ? w.Value : double.NaN)
: new ChemicalElement(z.Value, s, n, true, w.HasValue ? w.Value : double.NaN));
}