/// <summary>
/// Parses a dictionary from the current parsing position.
/// The prerequisite for calling this method is, that a dictionary begin token has been read.
/// </summary>
/// <returns>The dictionary found at the parsing position.</returns>
NSDictionary ParseDictionary()
{
//Skip begin token
var origin = new BinaryOrigin(this.index, 0);
Skip();
SkipWhitespacesAndComments();
NSDictionary dict = new NSDictionary(origin);
while (!Accept(DICTIONARY_END_TOKEN))
{
//Parse key
string keyString;
if (Accept(QUOTEDSTRING_BEGIN_TOKEN))
{
keyString = ParseQuotedString();
}
else
{
keyString = ParseString();
}
SkipWhitespacesAndComments();
//Parse assign token
Read(DICTIONARY_ASSIGN_TOKEN);
SkipWhitespacesAndComments();
NSObject nso = ParseObject();
dict.Add(keyString, nso);
SkipWhitespacesAndComments();
Read(DICTIONARY_ITEM_DELIMITER_TOKEN);
SkipWhitespacesAndComments();
}
//skip end token
Skip();
origin.SetEndPosition(this.index);
return(dict);
}
/// <summary>
/// Parses a data object from the current parsing position.
/// This can either be a NSData object or a GnuStep NSNumber or NSDate.
/// The prerequisite for calling this method is, that a data begin token has been read.
/// </summary>
/// <returns>The data object found at the parsing position.</returns>
NSObject ParseData()
{
NSObject obj = null;
//Skip begin token
var origin = new BinaryOrigin(this.index, 0);
Skip();
if (Accept(DATA_GSOBJECT_BEGIN_TOKEN))
{
Skip();
Expect(DATA_GSBOOL_BEGIN_TOKEN, DATA_GSDATE_BEGIN_TOKEN, DATA_GSINT_BEGIN_TOKEN, DATA_GSREAL_BEGIN_TOKEN);
if (Accept(DATA_GSBOOL_BEGIN_TOKEN))
{
//Boolean
Skip();
Expect(DATA_GSBOOL_TRUE_TOKEN, DATA_GSBOOL_FALSE_TOKEN);
if (Accept(DATA_GSBOOL_TRUE_TOKEN))
{
obj = new NSNumber(true, origin);
}
else
{
obj = new NSNumber(false, origin);
}
//Skip the parsed boolean token
Skip();
}
else if (Accept(DATA_GSDATE_BEGIN_TOKEN))
{
//Date
Skip();
string dateString = ReadInputUntil(DATA_END_TOKEN);
obj = new NSDate(dateString, origin);
}
else if (Accept(DATA_GSINT_BEGIN_TOKEN, DATA_GSREAL_BEGIN_TOKEN))
{
//Number
Skip();
string numberString = ReadInputUntil(DATA_END_TOKEN);
obj = new NSNumber(numberString, origin);
}
//parse data end token
Read(DATA_END_TOKEN);
}
else
{
string dataString = ReadInputUntil(DATA_END_TOKEN);
dataString = Regex.Replace(dataString, "\\s+", "");
int numBytes = dataString.Length / 2;
byte[] bytes = new byte[numBytes];
for (int i = 0; i < bytes.Length; i++)
{
string byteString = dataString.Substring(i * 2, 2);
int byteValue = Convert.ToInt32(byteString, 16);
bytes[i] = (byte)byteValue;
}
obj = new NSData(bytes, origin);
//skip end token
Skip();
}
origin.SetEndPosition(this.index);
return(obj);
}