public bool TryParse(string source, ref int index, [NotNullWhen(true)] out JsonValue?value, [NotNullWhen(false)] out string?errorMessage, bool allowExtraChars)
{
bool complete = false;
var obj = new JsonObject();
value = obj;
var length = source.Length;
index++;
while (index < length)
{
errorMessage = source.SkipWhiteSpace(ref index, length, out char c);
if (errorMessage != null)
{
return(false);
}
// check for empty object
if (c == '}')
{
if (obj.Count == 0)
{
complete = true;
index++;
break;
}
else
{
errorMessage = "Expected key.";
return(false);
}
}
// get key
errorMessage = source.SkipWhiteSpace(ref index, length, out c);
if (errorMessage != null)
{
return(false);
}
if (c != '\"')
{
errorMessage = "Expected key.";
return(false);
}
if (!JsonParser.TryParse(source, ref index, out var item, out errorMessage))
{
return(false);
}
var key = item !.String;
// check for colon
errorMessage = source.SkipWhiteSpace(ref index, length, out c);
if (errorMessage != null)
{
return(false);
}
if (c != ':')
{
obj.Add(key, null !);
errorMessage = "Expected ':'.";
return(false);
}
index++;
// get value (whitespace is removed in Parse)
var success = JsonParser.TryParse(source, ref index, out item, out errorMessage);
obj.Add(key, item !);
if (!success)
{
return(false);
}
errorMessage = source.SkipWhiteSpace(ref index, length, out c);
if (errorMessage != null)
{
return(false);
}
// check for end or separator
index++;
if (c == '}')
{
complete = true;
break;
}
if (c != ',')
{
errorMessage = "Expected ','.";
return(false);
}
}
if (!complete)
{
errorMessage = "Unterminated object (missing '}').";
return(false);
}
errorMessage = null;
return(true);
}
public bool TryParse(TextReader stream, [NotNullWhen(true)] out JsonValue?value, [NotNullWhen(false)] out string?errorMessage)
{
Debug.Assert(stream.Peek() == '[');
bool complete = false;
var array = new JsonArray();
value = array;
while (stream.Peek() != -1)
{
stream.Read(); // waste the '[' or ','
errorMessage = stream.SkipWhiteSpace(out var c);
if (errorMessage != null)
{
return(false);
}
// check for empty array
if (c == ']')
{
if (array.Count == 0)
{
complete = true;
stream.Read(); // waste the ']'
break;
}
errorMessage = "Expected value.";
return(false);
}
// get value
var success = JsonParser.TryParse(stream, out var item, out errorMessage);
array.Add(item !);
if (!success)
{
return(false);
}
errorMessage = stream.SkipWhiteSpace(out c);
if (errorMessage != null)
{
return(false);
}
// check for end or separator
if (c == ']')
{
complete = true;
stream.Read(); // waste the ']'
break;
}
if (c != ',')
{
errorMessage = "Expected ','.";
return(false);
}
}
if (!complete)
{
errorMessage = "Unterminated array (missing ']')";
return(false);
}
errorMessage = null;
return(true);
}
public bool TryParse(TextReader stream, [NotNullWhen(true)] out JsonValue?value, [NotNullWhen(false)] out string?errorMessage)
{
bool complete = false;
var obj = new JsonObject();
value = obj;
while (stream.Peek() != -1)
{
stream.Read(); // waste the '{' or ','
errorMessage = stream.SkipWhiteSpace(out char c);
if (errorMessage != null)
{
return(false);
}
// check for empty object
if (c == '}')
{
if (obj.Count == 0)
{
complete = true;
stream.Read(); // waste the '}'
break;
}
else
{
errorMessage = "Expected key.";
return(false);
}
}
// get key
errorMessage = stream.SkipWhiteSpace(out c);
if (errorMessage != null)
{
return(false);
}
if (c != '\"')
{
errorMessage = "Expected key.";
return(false);
}
if (!JsonParser.TryParse(stream, out var item, out errorMessage))
{
return(false);
}
var key = item !.String;
// check for colon
errorMessage = stream.SkipWhiteSpace(out c);
if (errorMessage != null)
{
return(false);
}
if (c != ':')
{
obj.Add(key, null !);
errorMessage = "Expected ':'.";
return(false);
}
stream.Read(); // waste the ':'
// get value (whitespace is removed in Parse)
var success = JsonParser.TryParse(stream, out item, out errorMessage);
obj.Add(key, item !);
if (!success)
{
return(false);
}
errorMessage = stream.SkipWhiteSpace(out c);
if (errorMessage != null)
{
return(false);
}
// check for end or separator
if (c == '}')
{
complete = true;
stream.Read(); // waste the '}'
break;
}
if (c != ',')
{
errorMessage = "Expected ','.";
return(false);
}
}
if (!complete)
{
errorMessage = "Unterminated object (missing '}').";
return(false);
}
errorMessage = null;
return(true);
}
public bool TryParse(string source, ref int index, [NotNullWhen(true)] out JsonValue?value, [NotNullWhen(false)] out string?errorMessage, bool allowExtraChars)
{
Debug.Assert(index < source.Length && source[index] == '[');
var complete = false;
var array = new JsonArray();
value = array;
var length = source.Length;
index++;
while (index < length)
{
errorMessage = source.SkipWhiteSpace(ref index, length, out char c);
if (errorMessage != null)
{
return(false);
}
// check for empty array
if (c == ']')
{
if (array.Count == 0)
{
complete = true;
index++;
break;
}
errorMessage = "Expected value.";
return(false);
}
// get value
var success = JsonParser.TryParse(source, ref index, out var item, out errorMessage);
array.Add(item !);
if (!success)
{
return(false);
}
errorMessage = source.SkipWhiteSpace(ref index, length, out c);
if (errorMessage != null)
{
return(false);
}
// check for end or separator
index++;
if (c == ']')
{
complete = true;
break;
}
if (c != ',')
{
errorMessage = "Expected ','.";
return(false);
}
}
if (!complete)
{
errorMessage = "Unterminated array (missing ']')";
return(false);
}
errorMessage = null;
return(true);
}
