public void SetUp()
{
jFalse = new JBoolean();
jTrue = new JBoolean(true);
}
internal JavaBoolean(JBoolean _enclosing)
: base(_enclosing)
{
this._enclosing = _enclosing;
}
public string VisitBoolean(JBoolean boolean)
{
return(boolean.Value ? "true" : "false");
}
/// <summary>
/// Parse a JSON string to a doufu json object
/// </summary>
/// <param name="sJSON">JSON string</param>
/// <param name="bAllowNonStandardVariableName">True to allow non-standard variable name, for example {"foo\0\nfoo":"str"} is allowed.
/// Otherwise incorrect format exception will be thrown.</param>
/// <returns>Return a doufu json object</returns>
public static JSONObject Parse(string sJSON, bool bAllowNonStandardVariableName)
{
sJSON = sJSON.Trim();
// indicate current json is array format
bool isArray = false;
if (sJSON[0] == BRACKET_START)
{
if (sJSON[sJSON.Length - 1] != BRACKET_END)
{
throw new Exception("Incorrect format, json starts with { but not ends with }");
}
}
else if (sJSON[0] == BRACE_START)
{
if (sJSON[sJSON.Length - 1] != BRACE_END)
{
throw new Exception("Incorrect format, json starts with [ but not ends with ]");
}
isArray = true;
}
else
{
throw new Exception("Incorrect format, json should starts with { or [");
}
// remove brackets
sJSON = sJSON.Substring(1, sJSON.Length - 2);
sJSON = sJSON.Trim();
JObject jsonRet = new JObject();
JArray jsonArrRet = new JArray();
Regex reVariableName = new Regex(@"^[""|'][a-zA-Z$]+[a-zA-Z0-9_\$]*[""|']$", RegexOptions.None);
if (bAllowNonStandardVariableName)
{
reVariableName = new Regex(@"^[""|'].*[""|']$", RegexOptions.None);
}
Regex reIsLetter = new Regex(@"^[a-zA-Z]*$", RegexOptions.None);
Regex reIsNumberChar = new Regex(@"^-?[0-9]*$", RegexOptions.None);
Regex reIsNumber = new Regex(@"^-?[0-9]+$", RegexOptions.None);
string sVariableName = string.Empty;
JSONObject oVariableValue;
ParsingStatus iStatus = ParsingStatus.Unstarted;
Collection<char> cStartSymbs = new Collection<char>();
Collection<char> cEndSymbs = new Collection<char>();
if (isArray)
{
iStatus = ParsingStatus.ExpectVariableValue |
ParsingStatus.ExpectStartBracket |
ParsingStatus.ExpectStartBrace;
}
else
{
iStatus = ParsingStatus.ExpectVariableName;
}
// indicate whether the last loop exited with error.
// if there were error, the iConditionMet would be 0
int iConditionMet = 1;
for (int i = 0; i < sJSON.Length; )
{
if (iConditionMet <= 0)
{
throw new Exception("Incorrect format: Expected " + iStatus.ToString() + " position: " + i.ToString());
}
else
{
iConditionMet = 0;
}
if (iStatus == (iStatus | ParsingStatus.ExpectStartBracket))
{
// is start symbol?
if (BRACKET_START == sJSON[i])
{
StringBuilder sInnerJSON = new StringBuilder();
int iBracketCounter = 0;
int j;
for (j = i; j < sJSON.Length; j++)
{
sInnerJSON.Append(sJSON[j]);
if (sJSON[j] == BRACKET_START)
{
iBracketCounter++;
}
else if (sJSON[j] == BRACKET_END)
{
iBracketCounter--;
}
if (iBracketCounter == 0)
{
break;
}
}
oVariableValue = Parse(sInnerJSON.ToString());
// add value
if (isArray)
{
jsonArrRet.Value.Add(oVariableValue);
}
else
{
jsonRet.Items.Add(sVariableName, oVariableValue);
}
i = ++j;
iStatus = ParsingStatus.ExpectCommas |
ParsingStatus.ExpectEOS |
ParsingStatus.ExpectBlank;
iConditionMet++;
continue;
}
}
if (iStatus == (iStatus | ParsingStatus.ExpectEndBracket))
{
}
if (iStatus == (iStatus | ParsingStatus.ExpectStartBrace))
{
// check if it is "["
if (BRACE_START == sJSON[i])
{
StringBuilder sInnerJSON = new StringBuilder();
int iBracketCounter = 0;
int j;
for (j = i; j < sJSON.Length; j++)
{
sInnerJSON.Append(sJSON[j]);
if (sJSON[j] == BRACE_START)
{
iBracketCounter++;
}
else if (sJSON[j] == BRACE_END)
{
iBracketCounter--;
}
if (iBracketCounter == 0)
{
break;
}
}
oVariableValue = Parse(sInnerJSON.ToString());
// add value
if (isArray)
{
jsonArrRet.Value.Add(oVariableValue);
}
else
{
jsonRet.Items.Add(sVariableName, oVariableValue);
}
i = ++j;
iStatus = ParsingStatus.ExpectCommas |
ParsingStatus.ExpectEOS |
ParsingStatus.ExpectBlank;
iConditionMet++;
continue;
}
}
if (iStatus == (iStatus | ParsingStatus.ExpectEndBrace))
{
}
if (iStatus == (iStatus | ParsingStatus.ExpectVariableName))
{
StringBuilder sName = new StringBuilder();
string sActualName;
bool bBroke = false;
int j;
for (j = i; j < sJSON.Length; j++)
{
if (sJSON[j] == NAME_VALUE_SEPARATOR)
{
bBroke = true;
break;
}
sName.Append(sJSON[j]);
}
sActualName = sName.ToString();
sActualName = sActualName.Trim();
if (reVariableName.IsMatch(sActualName.ToString()) && bBroke == true)
{
// TODO: string escape
sActualName = sActualName.Substring(1, sActualName.Length - 2);
sVariableName = sActualName;
i = ++j;
iStatus = ParsingStatus.ExpectVariableValue |
ParsingStatus.ExpectStartBrace |
ParsingStatus.ExpectStartBracket |
ParsingStatus.ExpectBlank;
iConditionMet++;
continue;
}
}
if (iStatus == (iStatus | ParsingStatus.ExpectVariableValue))
{
if (sJSON[i] == '"' || sJSON[i] == '\'')
{
StringBuilder sValue = new StringBuilder();
bool bBroke = false;
int j;
for (j = i + 1; j < sJSON.Length; j++)
{
if (sJSON[j] == sJSON[i] && sJSON[j - 1] != '\\')
{
bBroke = true;
break;
}
// process escaped unicode
if (sJSON[j] == '\\')
{
if (j + 5 < sJSON.Length && sJSON[j+1] == 'u')
{
string hex = sJSON.Substring(j + 2, 4);
sValue.Append((char)Int16.Parse(hex, System.Globalization.NumberStyles.HexNumber));
j += 5;
continue;
}
}
sValue.Append(sJSON[j]);
}
if (bBroke == true)
{
string sFinalValue = sValue.ToString();
sFinalValue = sFinalValue.Replace("\\\"", "\"");
sFinalValue = sFinalValue.Replace("\\\'", "\'");
oVariableValue = new JString(sFinalValue);
// add value
if (isArray)
{
jsonArrRet.Value.Add(oVariableValue);
}
else
{
jsonRet.Items.Add(sVariableName, oVariableValue);
}
i = j + 1;
iStatus = ParsingStatus.ExpectEOS |
ParsingStatus.ExpectCommas |
ParsingStatus.ExpectBlank;
iConditionMet++;
continue;
}
}
else if (reIsLetter.IsMatch(sJSON[i].ToString()))
{
StringBuilder sBool = new StringBuilder();
bool bFound = false;
int j;
for (j = 0; j < 5; j++)
{
sBool.Append(sJSON[i + j]);
if (j == 3 && sBool.ToString() == "true")
{
bFound = true;
break;
}
else if (j == 4 && sBool.ToString() == "false")
{
bFound = true;
break;
}
}
if (bFound == true)
{
oVariableValue = new JBoolean(bool.Parse(sBool.ToString()));
// add value
if (isArray)
{
jsonArrRet.Value.Add(oVariableValue);
}
else
{
jsonRet.Items.Add(sVariableName, oVariableValue);
}
i += j + 1;
iStatus = ParsingStatus.ExpectEOS |
ParsingStatus.ExpectCommas |
ParsingStatus.ExpectBlank;
iConditionMet++;
continue;
}
}
else if (reIsNumberChar.IsMatch(sJSON[i].ToString()))
{
// check if negative number
if (sJSON[i].ToString() == "-" && !reIsNumber.IsMatch(sJSON[i].ToString() + sJSON[i + 1].ToString()))
{
break;
}
StringBuilder sNumber = new StringBuilder();
int j;
for (j = i; j < sJSON.Length; j++)
{
if (reIsNumberChar.IsMatch(sJSON[j].ToString()))
{
sNumber.Append(sJSON[j]);
}
else
{
if (sJSON[j] != '.')
{
break;
}
sNumber.Append(sJSON[j]);
}
}
if (j == sJSON.Length || sJSON[j] == ',' || sJSON[j] == ' ')
{
oVariableValue = new JNumber(Int32.Parse(sNumber.ToString()));
// add value
if (isArray)
{
jsonArrRet.Value.Add(oVariableValue);
}
else
{
jsonRet.Items.Add(sVariableName, oVariableValue);
}
i = j;
iStatus = ParsingStatus.ExpectEOS |
ParsingStatus.ExpectCommas |
ParsingStatus.ExpectBlank;
iConditionMet++;
continue;
}
}
}
if (iStatus == (iStatus | ParsingStatus.ExpectBlank))
{
if (i < sJSON.Length && sJSON[i] == ' ')
{
i++;
iConditionMet++;
continue;
}
}
if (iStatus == (iStatus | ParsingStatus.ExpectCommas))
{
if (i < sJSON.Length && sJSON[i] == ',')
{
i++;
if (isArray)
{
iStatus = ParsingStatus.ExpectVariableValue |
ParsingStatus.ExpectStartBracket |
ParsingStatus.ExpectStartBrace |
ParsingStatus.ExpectBlank;
}
else
{
iStatus = ParsingStatus.ExpectVariableName |
ParsingStatus.ExpectBlank;
}
iConditionMet++;
continue;
}
}
if (iStatus == (iStatus | ParsingStatus.ExpectEOS))
{
if (i == sJSON.Length)
{
iConditionMet++;
continue;
}
}
}
if (isArray)
{
return jsonArrRet;
}
else
{
return jsonRet;
}
}
public string VisitBoolean(JBoolean boolean)
{
return($"[boolean] => {boolean.Value}");
}