public int explore(string json, int from, int to, JsonExploreListener listener,
string currentPropertyName = null)
{
int pos = from;
for (; pos <= to; pos++)
{
int?nextPos = json.firstCharPosition(cin => cin != ',' && !Char.IsWhiteSpace(cin), pos, to);; //firstNonWhiteSpaceCharacterIndex(json, pos, to);
if (nextPos == null)
{
string strError = String.Format("expected whitespace char after char {0}", pos);
throw new Exception(strError);
}
pos = nextPos.Value;
char c = json[pos];
if (c == '}')
{
listener.JsonEndObject(pos);
return(pos);
}
// read a property Name
int?propertyNameEnd = json.firstCharPosition(cin => cin == ':', pos, to);
if (null == propertyNameEnd)
{
throw new Exception(string.Format("no end found to property name at char {0} property starts with {1} in json {2}", pos, json.Substring(pos), json.Substring(from)));
}
currentPropertyName = json.Substring(pos, propertyNameEnd.Value - pos);
if (currentPropertyName[0] == '"')
{
currentPropertyName = currentPropertyName.Substring(1);
}
if (currentPropertyName.EndsWith("\""))
{
currentPropertyName = currentPropertyName.Substring(0, currentPropertyName.Length - 1);
}
pos = propertyNameEnd.Value + 1;
int?valueStartPos = firstNonWhiteSpaceCharacterIndex(json, pos, to);
if (valueStartPos == null)
{
string strError = String.Format("no value found for property {0} at position {1} in json {2}", currentPropertyName, pos, json);
throw new Exception(strError);
}
c = json[valueStartPos.Value];
if (c == ObjectStart)
{
listener.JsonStartObject(currentPropertyName, valueStartPos.Value);
pos = explore(json, valueStartPos.Value + 1, to, listener, currentPropertyName);
}
else // read a non object
{
pos = readNonObject(json, valueStartPos.Value, to, listener, currentPropertyName);
}
}
return(pos);
}
public void explore(string json, JsonExploreListener listener)
{
int? firstNWSCharIndex = firstNonWhiteSpaceCharacterIndex(json);
int? lastNonWSCharIndex = lastNonWhiteSpaceCharacterIndex(json);
if (firstNWSCharIndex == null || lastNonWSCharIndex == null || json[firstNWSCharIndex.Value] != ObjectStart || json[lastNonWSCharIndex.Value] != ObjectEnd)
{
throw new Exception(String.Format("expected json to start with {0} and end with {1}", ObjectStart, ObjectEnd));
}
listener.JsonStartObject(null, 0);
explore(json, firstNWSCharIndex.Value + 1, lastNonWSCharIndex.Value, listener);
}
public void explore(string json, JsonExploreListener listener)
{
int?firstNWSCharIndex = firstNonWhiteSpaceCharacterIndex(json);
int?lastNonWSCharIndex = lastNonWhiteSpaceCharacterIndex(json);
if (firstNWSCharIndex == null || lastNonWSCharIndex == null || json[firstNWSCharIndex.Value] != ObjectStart || json[lastNonWSCharIndex.Value] != ObjectEnd)
{
throw new Exception(String.Format("expected json to start with {0} and end with {1}", ObjectStart, ObjectEnd));
}
listener.JsonStartObject(null, 0);
explore(json, firstNWSCharIndex.Value + 1, lastNonWSCharIndex.Value, listener);
}
public int explore(string json, int from, int to, JsonExploreListener listener,
string currentPropertyName = null)
{
int pos = from;
for (; pos <= to; pos++)
{
int? nextPos = json.firstCharPosition(cin => cin != ',' && !Char.IsWhiteSpace(cin), pos, to); ;//firstNonWhiteSpaceCharacterIndex(json, pos, to);
if (nextPos == null)
{
string strError = String.Format("expected whitespace char after char {0}", pos);
throw new Exception(strError);
}
pos = nextPos.Value;
char c = json[pos];
if (c == '}')
{
listener.JsonEndObject(pos);
return pos;
}
// read a property Name
int? propertyNameEnd = json.firstCharPosition(cin => cin == ':', pos, to);
if (null == propertyNameEnd)
{
throw new Exception(string.Format("no end found to property name at char {0} property starts with {1} in json {2}", pos, json.Substring(pos), json.Substring(from)));
}
currentPropertyName = json.Substring(pos, propertyNameEnd.Value - pos);
if (currentPropertyName[0] == '"') currentPropertyName = currentPropertyName.Substring(1);
if (currentPropertyName.EndsWith("\"")) currentPropertyName = currentPropertyName.Substring(0, currentPropertyName.Length - 1);
pos = propertyNameEnd.Value + 1;
int? valueStartPos = firstNonWhiteSpaceCharacterIndex(json, pos, to);
if (valueStartPos == null)
{
string strError = String.Format("no value found for property {0} at position {1} in json {2}", currentPropertyName, pos, json);
throw new Exception(strError);
}
c = json[valueStartPos.Value];
if (c == ObjectStart)
{
listener.JsonStartObject(currentPropertyName, valueStartPos.Value);
pos = explore(json, valueStartPos.Value + 1, to, listener, currentPropertyName);
}
else // read a non object
{
pos = readNonObject(json, valueStartPos.Value, to, listener, currentPropertyName);
}
}
return pos;
}
protected void testInBuiltAndNativeJson(Object o, JsonExpectationBlock jsonExpectation, string testDescription)
{
System.Console.WriteLine("starting " + testDescription + " ************");
MemoryStream stream1 = new MemoryStream();
DataContractJsonSerializer ser = new DataContractJsonSerializer(o.GetType());
ser.WriteObject(stream1, o);
StreamReader sr = new StreamReader(stream1);
stream1.Position = 0;
string strBuiltInJson = sr.ReadToEnd();
var mocks = new MockRepository();
JsonExploreListener theMock = null;
RhinoMocks.Logger = new TextWriterExpectationLogger(Console.Out);
Object2Json o2j = new Object2Json();
o2j.NodeExpander = new DataContractFieldNodeExpander();
o2j.isDefaultLeafValue = DataContractDefaultUtil.isDefaultLeafValue;
o2j.OmitDefaultLeafValuesInJs = true;
string nativejson = o2j.toJson(o);
JSONExplorerImpl jsonExplorerImpl = new JSONExplorerImpl();
string json = null;
Func <string> runWithMocks = () =>
{
theMock = mocks.StrictMock <JsonExploreListener>();
using (mocks.Ordered())
{
jsonExpectation(theMock, json);
}
theMock.Replay();
jsonExplorerImpl.explore(json, theMock);
theMock.VerifyAllExpectations();
return(null);
};
Console.WriteLine("testing inbuilt json=" + strBuiltInJson);
json = strBuiltInJson;
runWithMocks();
Console.WriteLine("testing json=" + nativejson);
json = nativejson;
runWithMocks();
System.Console.WriteLine("completed " + testDescription + " ************");
}
public static void testJsonStructure(string json, JsonExpectationBlock expectation, string testname)
{
RhinoMocks.Logger = new TextWriterExpectationLogger(Console.Out);
System.Console.WriteLine("test: " + testname + "testing json=" + json);
var mocks = new MockRepository();
JsonExploreListener theMock = mocks.StrictMock <JsonExploreListener>();
using (mocks.Ordered())
{
expectation(theMock, json);
}
theMock.Replay();
(new JSONExplorerImpl()).explore(json, theMock);
theMock.VerifyAllExpectations();
}
internal int exploreList(string json, int from, int to, JsonExploreListener listener, char terminatingChar,
Func <int, bool> terminate, string listType)
{
// read arguments
for (int pos = from + 1; pos <= to; pos++)
{
int?nextPos = json.firstCharPosition(cin => !Char.IsWhiteSpace(cin), pos, to);
if (nextPos == null)
{
string strError = String.Format("expected whitespace char after char {0}", pos);
throw new Exception(strError);
}
pos = nextPos.Value;
char c = json[pos];
if (c == ',')
{
//throw new Exception("multiple javascript list items not supported");
continue;
}
if (c == terminatingChar)
{
//listener.JsonEndFunction(pos);
terminate(pos);
return(pos);
}
else if (c == ObjectStart)
{
listener.JsonStartObject(/*currentPropertyName*/ null, pos);
pos = explore(json, pos + 1, to, listener, null /*currentPropertyName*/);
}
else // process a leaf !
{
pos = readNonObject(json, pos, to, listener, null);
}
}
throw new Exception(listType + " not terminated");
}
internal int exploreArray(string json, int from, int to, JsonExploreListener listener)
{
return(exploreList(json, from, to, listener, ']', (p) => { listener.JsonEndArray(p); return true; }, "array"));
}
internal int exploreFunctionCall(string json, int from, int to, JsonExploreListener listener,
string functionName)
{
return(exploreList(json, from, to, listener, ')', (p) => { listener.JsonEndFunction(p); return true; }, "function call"));
}
internal int readNonObject(string json, int valueStartPos, int to, JsonExploreListener listener, string currentPropertyName)
{
int pos = -1;
int?valueEndPos;
//Predicate<char> valueEndCondition;
Predicate <char> isQuoteChar = cin => cin == '"' || cin == '\'';
StringUtils.Match valueEndCondition;
//Predicate<char> isQuoteChar = cin=> cin=='"' || cin == '\'';
char c = json[valueStartPos];
bool isQuoted = isQuoteChar(c);
string value = null;
bool isFunctionCall = false;
bool isArray = false;
if (!isQuoted)
{
valueEndCondition = (cin, strin, posin) => Char.IsWhiteSpace(cin) || cin == ',' ||
cin == ObjectEnd || cin == '(' || cin == ')' || cin == ']';
valueEndPos = json.firstCharPosition(valueEndCondition, valueStartPos, to);
if (valueEndPos != null)
{
value = json.Substring(valueStartPos, valueEndPos.Value - valueStartPos);
// is this a function start ?
char lastchar = json[valueEndPos.Value];
if (lastchar == '(')
{
listener.JsonStartFunction(value, valueEndPos.Value, currentPropertyName);
isFunctionCall = true;
pos = exploreFunctionCall(json, valueEndPos.Value, to, listener, value);
}
else if (value[0] == '[')
{
listener.JsonStartArray(currentPropertyName, valueStartPos);
isArray = true;
pos = exploreArray(json, valueStartPos, to, listener);
}
if (value.Equals(JavaScriptNullDesignator))
{
value = null;
}
}
}
else
{
// this is wrong - whabout double, triple escaping !
// read escaped quoted value
// todo - remove object creation !
StringBuilder sbValue = new StringBuilder();
valueEndPos = readEscapedQuotedString(json, valueStartPos + 1, c, to, sbValue);
//valueEndCondition = (cin, strin, posin) => isQuoteChar(cin) && !(posin>0 && strin[posin-1]=='\\' );
//valueStartPos++;
if (valueEndPos != null)
{
value = sbValue.ToString();
}
}
if (null == valueEndPos)
{
string strError = String.Format("no end found for property {0} at position {1} in json {2}", currentPropertyName, valueStartPos, json);
throw new Exception(strError);
}
// check here if it is a function call
if (!isFunctionCall && !isArray)
{
listener.JsonLeaf(currentPropertyName, value, isQuoted);
pos = valueEndPos.Value - 1; // point to the last char processed
}
if (pos == -1)
{
throw new Exception("pos not assigned correctly");
}
if (isQuoted)
{
pos++;
}
return(pos);
}
internal int readNonObject(string json, int valueStartPos, int to, JsonExploreListener listener, string currentPropertyName)
{
int pos=-1;
int? valueEndPos;
//Predicate<char> valueEndCondition;
Predicate<char> isQuoteChar = cin => cin == '"' || cin == '\'';
StringUtils.Match valueEndCondition;
//Predicate<char> isQuoteChar = cin=> cin=='"' || cin == '\'';
char c = json[valueStartPos];
bool isQuoted = isQuoteChar(c);
string value = null;
bool isFunctionCall = false;
bool isArray = false;
if (!isQuoted)
{
valueEndCondition = (cin, strin, posin) => Char.IsWhiteSpace(cin) || cin == ','
|| cin == ObjectEnd || cin == '(' || cin==')' || cin==']';
valueEndPos = json.firstCharPosition(valueEndCondition, valueStartPos, to);
if (valueEndPos != null)
{
value = json.Substring(valueStartPos, valueEndPos.Value - valueStartPos);
// is this a function start ?
char lastchar = json[valueEndPos.Value];
if (lastchar == '(')
{
listener.JsonStartFunction(value, valueEndPos.Value, currentPropertyName);
isFunctionCall = true;
pos = exploreFunctionCall(json, valueEndPos.Value, to, listener, value);
}
else if (value[0] == '[')
{
listener.JsonStartArray(currentPropertyName, valueStartPos);
isArray = true;
pos = exploreArray(json, valueStartPos, to, listener);
}
if (value.Equals(JavaScriptNullDesignator)) value = null;
}
}
else
{
// this is wrong - whabout double, triple escaping !
// read escaped quoted value
// todo - remove object creation !
StringBuilder sbValue = new StringBuilder();
valueEndPos = readEscapedQuotedString(json, valueStartPos + 1, c, to, sbValue);
//valueEndCondition = (cin, strin, posin) => isQuoteChar(cin) && !(posin>0 && strin[posin-1]=='\\' );
//valueStartPos++;
if (valueEndPos != null) value = sbValue.ToString();
}
if (null == valueEndPos)
{
string strError = String.Format("no end found for property {0} at position {1} in json {2}", currentPropertyName, valueStartPos, json);
throw new Exception(strError);
}
// check here if it is a function call
if (!isFunctionCall && !isArray)
{
listener.JsonLeaf(currentPropertyName, value, isQuoted);
pos = valueEndPos.Value - 1; // point to the last char processed
}
if (pos == -1) throw new Exception("pos not assigned correctly");
if (isQuoted) pos++;
return pos;
}
internal int exploreList(string json, int from, int to, JsonExploreListener listener, char terminatingChar,
Func<int, bool> terminate, string listType)
{
// read arguments
for (int pos = from+1; pos <= to; pos++)
{
int? nextPos = json.firstCharPosition(cin => !Char.IsWhiteSpace(cin), pos, to);
if (nextPos == null)
{
string strError = String.Format("expected whitespace char after char {0}", pos);
throw new Exception(strError);
}
pos = nextPos.Value;
char c = json[pos];
if (c==',')
{
//throw new Exception("multiple javascript list items not supported");
continue;
}
if (c == terminatingChar)
{
//listener.JsonEndFunction(pos);
terminate(pos);
return pos;
}
else if (c == ObjectStart)
{
listener.JsonStartObject(/*currentPropertyName*/null, pos);
pos = explore(json, pos + 1, to, listener, null/*currentPropertyName*/);
}
else // process a leaf !
{
pos = readNonObject(json, pos, to, listener, null);
}
}
throw new Exception(listType + " not terminated");
}
internal int exploreFunctionCall(string json, int from, int to, JsonExploreListener listener,
string functionName)
{
return exploreList(json, from, to, listener, ')', (p) => { listener.JsonEndFunction(p); return true; }, "function call");
}
internal int exploreArray(string json, int from, int to, JsonExploreListener listener)
{
return exploreList(json, from, to, listener, ']', (p) => { listener.JsonEndArray(p); return true; }, "array");
}