public static JSONObject ReadFile(string path)
{
JSONTokenizer tokenizer = new JSONTokenizer(null, flag_res, BLANK, true);
tokenizer.Read(path);
return(ParseJSONObject(tokenizer));
}
public static JSONObject Read(char[] input)
{
JSONTokenizer tokenizer = new JSONTokenizer(input, flag_res, BLANK,
true);
return(ParseJSONObject(tokenizer));
}
private static JSONObject ParseJSONObject(JSONTokenizer tokenizer)
{
JSONObject currentObject = null;
string currentKey = null;
object currentValue = null;
bool isNumber = true, isComma = false;
State state = JSONParser.State.START;
for (; tokenizer.HasMoreTokens();)
{
string token = tokenizer.NextToken();
if (LEFT_BRACE.Equals(token))
{
if (state == JSONParser.State.START)
{
currentObject = new JSONObject();
state = JSONParser.State.KEY;
isComma = true;
}
else if (state == JSONParser.State.VALUE)
{
tokenizer.PutBackToken(token);
currentValue = ParseJSONObject(tokenizer);
isNumber = false;
isComma = false;
}
else
{
throw new System.Exception("expected JSON object after {");
}
}
else if (RIGHT_BRACE.Equals(token))
{
if (currentKey != null && currentValue != null)
{
currentObject.Put(currentKey, currentValue);
isComma = false;
}
state = JSONParser.State.END;
return(currentObject);
}
else if (QUOT.Equals(token))
{
if (state == JSONParser.State.VALUE)
{
isNumber = false;
}
isComma = false;
}
else if (COLON.Equals(token))
{
if (state == JSONParser.State.KEY)
{
state = JSONParser.State.VALUE;
}
else
{
throw new Exception("expected key before :");
}
}
else if (COMMA.Equals(token))
{
isComma = false;
if (state == JSONParser.State.VALUE)
{
if (currentKey != null && currentValue != null)
{
currentObject.Put(currentKey, currentValue);
}
else
{
throw new Exception("missing key or value");
}
state = JSONParser.State.KEY;
}
else
{
throw new Exception("unexpected ,");
}
}
else
{
if (isComma)
{
if (state == JSONParser.State.KEY)
{
currentKey = token;
}
else if (state == JSONParser.State.VALUE)
{
currentValue = token;
isComma = false;
isNumber = false;
}
}
else if (state == JSONParser.State.KEY)
{
currentKey = token;
}
else if (state == JSONParser.State.VALUE)
{
if (isNumber)
{
if (TRUE.Equals(token, StringComparison.InvariantCultureIgnoreCase) ||
FALSE.Equals(token, StringComparison.InvariantCultureIgnoreCase))
{
currentValue = Boolean.Parse(token);
}
else if (MathUtils.IsNan(token))
{
try {
currentValue = Single.Parse(token, JavaRuntime.NumberFormat);
} catch (FormatException) {
throw new Exception(
"non number or non boolean value must be enclosed within [\"]");
}
}
}
else
{
currentValue = token;
}
isNumber = true;
}
}
}
if (state != JSONParser.State.END)
{
throw new Exception("missing }");
}
return(currentObject);
}
private static JSONObject ParseJSONObject(JSONTokenizer tokenizer) {
JSONObject currentObject = null;
string currentKey = null;
object currentValue = null;
bool isNumber = true, isComma = false;
State state = JSONParser.State.START;
for (; tokenizer.HasMoreTokens();) {
string token = tokenizer.NextToken();
if (LEFT_BRACE.Equals(token)) {
if (state == JSONParser.State.START) {
currentObject = new JSONObject();
state = JSONParser.State.KEY;
isComma = true;
} else if (state == JSONParser.State.VALUE) {
tokenizer.PutBackToken(token);
currentValue = ParseJSONObject(tokenizer);
isNumber = false;
isComma = false;
} else {
throw new System.Exception("expected JSON object after {");
}
} else if (RIGHT_BRACE.Equals(token)) {
if (currentKey != null && currentValue != null) {
currentObject.Put(currentKey, currentValue);
isComma = false;
}
state = JSONParser.State.END;
return currentObject;
} else if (QUOT.Equals(token)) {
if (state == JSONParser.State.VALUE) {
isNumber = false;
}
isComma = false;
} else if (COLON.Equals(token)) {
if (state == JSONParser.State.KEY) {
state = JSONParser.State.VALUE;
} else {
throw new Exception("expected key before :");
}
} else if (COMMA.Equals(token)) {
isComma = false;
if (state == JSONParser.State.VALUE) {
if (currentKey != null && currentValue != null) {
currentObject.Put(currentKey, currentValue);
} else {
throw new Exception("missing key or value");
}
state = JSONParser.State.KEY;
} else {
throw new Exception("unexpected ,");
}
} else {
if (isComma) {
if (state == JSONParser.State.KEY) {
currentKey = token;
} else if (state == JSONParser.State.VALUE) {
currentValue = token;
isComma = false;
isNumber = false;
}
} else if (state == JSONParser.State.KEY) {
currentKey = token;
} else if (state == JSONParser.State.VALUE) {
if (isNumber) {
if (TRUE.Equals(token,StringComparison.InvariantCultureIgnoreCase)
|| FALSE.Equals(token,StringComparison.InvariantCultureIgnoreCase)) {
currentValue = Boolean.Parse(token);
} else if (MathUtils.IsNan(token)) {
try {
currentValue = Single.Parse(token,JavaRuntime.NumberFormat);
} catch (FormatException) {
throw new Exception(
"non number or non boolean value must be enclosed within [\"]");
}
}
} else {
currentValue = token;
}
isNumber = true;
}
}
}
if (state != JSONParser.State.END) {
throw new Exception("missing }");
}
return currentObject;
}
public static JSONObject ReadFile(string path) {
JSONTokenizer tokenizer = new JSONTokenizer(null, flag_res, BLANK, true);
tokenizer.Read(path);
return ParseJSONObject(tokenizer);
}
public static JSONObject Read(char[] input) {
JSONTokenizer tokenizer = new JSONTokenizer(input, flag_res, BLANK,
true);
return ParseJSONObject(tokenizer);
}