public JSONField(IEnumerable <JSONField> val, string identifier = null)
{
Identifier = identifier;
Type = FieldType.CONTAINER;
Container = JSONContainer.NewArray(val);
}
internal static bool TryParseObjectOrArray(string str, out JSONContainer obj, ref int index, out string errormessage, Stack <JSONContainer> containerStack)
{
obj = null;
errormessage = string.Empty;
for (; index < str.Length; index++)
{
char current = str[index];
if (current == '[')
{
index++;
return(TryParseArray(str, out obj, ref index, out errormessage, containerStack));
}
else if (current == '{')
{
index++;
return(TryParseObject(str, out obj, ref index, out errormessage, containerStack));
}
else if (JSONHelper.IsWhiteSpace(current))
{
continue;
}
else
{
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Container, "Expected object ('{') or array ('[') scope start", containerStack);
return(false);
}
}
errormessage = "Unexpected ending of input string";
return(false);
}
/// <summary>
/// Attempts to retrieve a field as a JSONContainer object value
/// </summary>
/// <param name="identifier">Key/Name/Identifier identifying the field to be retrieved</param>
/// <param name="val">JSONContainer object value stored in the field</param>
/// <returns>True, if a matching field was obtained. False, otherwise</returns>
public bool TryGetObjectField(string identifier, out JSONContainer val)
{
if (TryGetField(identifier, out JSONField field))
{
val = field.Container;
return(field.IsObject);
}
val = default;
return(false);
}
public JSONField(JSONContainer val, string identifier = null)
{
Identifier = identifier;
if (val == null)
{
Type = FieldType.NULL;
}
else
{
Type = FieldType.CONTAINER;
Container = val;
}
}
/// <summary>
/// Attempts to parse a JSONContainer from a json formatted string
/// </summary>
/// <param name="str">As JSON formatted input string</param>
/// <param name="result">The parsed JSONContainer result</param>
/// <param name="errormessage">A string containing a hint in case parsing fails</param>
/// <returns>True, if parsing is successful. False, otherwise</returns>
public static bool TryParse(string str, out JSONContainer result, out string errormessage)
{
str = JSONHelper.TrimStringForParsing(str);
if (!string.IsNullOrEmpty(str))
{
int index = 0;
return(TryParseObjectOrArray(str, out result, ref index, out errormessage, new Stack <JSONContainer>()));
}
else
{
result = null;
errormessage = "Parsing String cannot be null or empty!";
return(false);
}
}
private static void AnyContainerTest()
{
bool kill = false;
while (!kill)
{
Console.WriteLine("Paste in Test JSON. Type \"go\" in a single line to start parsing. Type \"exit\" to quit program");
string containerJSON = string.Empty;
while (true)
{
string line = Console.ReadLine();
if (line == "go")
{
break;
}
else if (line == "exit")
{
kill = true;
break;
}
else
{
containerJSON += line + '\n';
}
}
if (containerJSON == "exit")
{
break;
}
if (!string.IsNullOrEmpty(containerJSON))
{
if (JSONContainer.TryParse(containerJSON, out JSONContainer result, out string errormessage))
{
Console.WriteLine("\nParseSuccess!\n\n" + result.Build(true));
result.TryGetField("BotAdminIDs", out JSONContainer test);
}
else
{
Console.WriteLine(errormessage);
}
}
Console.WriteLine();
}
private static bool TryParseObject(string str, out JSONContainer obj, ref int index, out string errormessage, Stack <JSONContainer> containerStack)
{
obj = new JSONContainer();
containerStack.Push(obj);
errormessage = string.Empty;
int fieldIdentifierStart = index;
string fieldIdentifier = null;
ObjectParseStep parseStep = ObjectParseStep.SeekingFieldIdentifierOrScopeEnd;
for (; index < str.Length; index++)
{
char current = str[index];
switch (parseStep)
{
case ObjectParseStep.SeekingFieldIdentifierOrScopeEnd:
{
if (current == '\"')
{
fieldIdentifierStart = index + 1;
parseStep = ObjectParseStep.ParsingFieldIdentifier;
}
else if (current == '}')
{
index++;
containerStack.Pop();
return(true);
}
else if (JSONHelper.IsWhiteSpace(current))
{
continue;
}
else
{
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Object, "Expected field identifier start '\"' or object scope end '}'", containerStack);
return(false);
}
}
break;
case ObjectParseStep.ParsingFieldIdentifier:
{
if (current == '\"')
{
if (index - 1 > fieldIdentifierStart)
{
fieldIdentifier = str.Substring(fieldIdentifierStart, index - fieldIdentifierStart);
parseStep = ObjectParseStep.SeekingColon;
}
else if (index - 1 == fieldIdentifierStart)
{
fieldIdentifier = str[fieldIdentifierStart].ToString();
parseStep = ObjectParseStep.SeekingColon;
}
else
{
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Object, "Encountered empty (length = 0) field identifier!", containerStack);
return(false);
}
}
else
{
continue;
}
}
break;
case ObjectParseStep.SeekingColon:
{
if (current == ':')
{
parseStep = ObjectParseStep.SeekingValue;
}
else if (JSONHelper.IsWhiteSpace(current))
{
continue;
}
else
{
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Object, "Expected colon separating field identifier and field value!", containerStack);
return(false);
}
}
break;
case ObjectParseStep.SeekingValue:
{
if (JSONField.TryParseProgressive(str, fieldIdentifier, out JSONField field, ref index, out errormessage, containerStack))
{
if (!obj.TryAddField(field))
{
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Object, "Duplicate field identifier \"{fieldIdentifier}\"", containerStack);
return(false);
}
if (index < str.Length)
{
if (str[index] == '}')
{
index++;
containerStack.Pop();
return(true);
}
}
else
{
errormessage = "Unexpected ending of input string";
return(false);
}
parseStep = ObjectParseStep.SeekingFieldIdentifierOrScopeEnd;
}
/// <summary>
/// Adds a JSONContainer value to array
/// </summary>
/// <param name="val">JSONContainer value to add to the array</param>
public void Add(JSONContainer val)
{
Add(new JSONField(val));
}
/// <summary>
/// Attempts to add a field containing a JSONContainer value
/// </summary>
/// <param name="identifier">Key/Name/Identifier identifying the field to be added</param>
/// <param name="val">JSONContainer value to be stored in the new field</param>
/// <returns>True, if field was successfully added. False, otherwise</returns>
public bool TryAddField(string identifier, JSONContainer val)
{
return(TryAddField(new JSONField(val, identifier)));
}
internal static bool TryParseProgressive(string str, string fieldIdentifier, out JSONField field, ref int index, out string errormessage, Stack <JSONContainer> containerStack)
{
field = null;
errormessage = string.Empty;
int fieldValueStart = index;
bool valueIsInteger = true;
FieldParseStep parseStep = FieldParseStep.Seeking;
for (; index < str.Length; index++)
{
char current = str[index];
switch (parseStep)
{
case FieldParseStep.Seeking:
{
if (!JSONHelper.IsWhiteSpace(current))
{
switch (current)
{
case '[':
case '{':
{
if (!JSONContainer.TryParseObjectOrArray(str, out JSONContainer fieldObj, ref index, out errormessage, containerStack))
{
return(false);
}
else
{
field = new JSONField(fieldObj, fieldIdentifier);
return(true);
}
}
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '-':
case '.':
{
fieldValueStart = index;
parseStep = FieldParseStep.ParseNumber;
}
break;
case '\"':
{
fieldValueStart = index + 1;
parseStep = FieldParseStep.ParseString;
}
break;
case 't':
case 'f':
case 'n':
{
string valueString;
if (str.Length - index >= 4)
{
valueString = str.Substring(index, 4);
if (valueString == JSONHelper.TRUE)
{
field = new JSONField(true, fieldIdentifier);
index += 4;
return(true);
}
else if (valueString == JSONHelper.NULL)
{
field = new JSONField
{
Identifier = fieldIdentifier
};
index += 4;
return(true);
}
}
if (str.Length - index >= 5)
{
if (str.Substring(index, 5) == JSONHelper.FALSE)
{
field = new JSONField(false, fieldIdentifier);
index += 5;
return(true);
}
}
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Field, string.Format(UNEXPECTEDFIELDSTARTERRORFORMAT, current), containerStack);
return(false);
}
default:
{
errormessage = JSONHelper.GetErrorMessageString(str, index, JSONHelper.StructureType.Field, string.Format(UNEXPECTEDFIELDSTARTERRORFORMAT, current), containerStack);
return(false);
}
}
}
}
