/// <summary>
/// Returns a token stream from the string.
/// </summary>
/// <returns>
/// A <see cref="IronJSONTokenStream"/>
/// </returns>
public IronJSONTokenStream GenerateTokenStream()
{
IronJSONTokenStream tokenStream = new IronJSONTokenStream();
int line = 1;
for (int i = 0; i < m_string.Length; ++i)
{
if (m_string.Substring(i, Environment.NewLine.Length) == Environment.NewLine)
{
}
if (m_string[i] == '{')
{
tokenStream.Add(new IronJSONToken(TokenType.LeftCurlyBracket));
}
else if (m_string[i] == '}')
{
tokenStream.Add(new IronJSONToken(TokenType.RightCurlyBracket));
}
else if (m_string[i] == '[')
{
tokenStream.Add(new IronJSONToken(TokenType.LeftSquareBracket));
}
else if (m_string[i] == ']')
{
tokenStream.Add(new IronJSONToken(TokenType.RightSquareBracket));
}
else if (m_string[i] == ',')
{
tokenStream.Add(new IronJSONToken(TokenType.Comma));
}
else if (m_string[i] == ':')
{
tokenStream.Add(new IronJSONToken(TokenType.Colon));
}
// Numbers.
else if (Char.IsDigit(m_string[i]) || m_string[i] == '-')
{
// Get the full length of the number.
int j = i;
while (Char.IsDigit(m_string[j]) || m_string[j] == 'e' ||
m_string[j] == 'E' || m_string[j] == '.' ||
m_string[j] == '+' || m_string[j] == '-')
{
j++;
if (j >= m_string.Length)
break;
}
// Attempt conversion.
try
{
long l = System.Convert.ToInt64(m_string.Substring(i, j - i));
tokenStream.Add(new IronJSONToken(l));
i = j - 1;
}
catch
{
try
{
double d = System.Convert.ToDouble(m_string.Substring(i, j - i));
tokenStream.Add(new IronJSONToken(d));
i = j - 1;
}
catch
{
throw new JSONException("line " + line.ToString() + ": bad number");
}
}
}
// Strings
else if (m_string[i] == '"')
{
string s = "";
while (true)
{
i++;
if (i >= m_string.Length)
{
throw new JSONException("line " + line.ToString() + ": unterminated string");
}
else if (m_string[i] == '\\')
{
i++;
if (i >= m_string.Length)
{
throw new JSONException("line " + line.ToString() + ": unterminated string");
}
s += "\\" + m_string[i];
// TODO: Convert unicode.
}
else if (m_string[i] == '"')
{
break;
}
else
{
s += m_string[i];
}
}
// Unescape characters.
string temp = String.Copy(s);
temp = temp.Replace("\\\"", "\"");
temp = temp.Replace("\\\\", "\\");
temp = temp.Replace("\\/", "/");
temp = temp.Replace("\\b", "\b");
temp = temp.Replace("\\f", "\f");
temp = temp.Replace("\\n", "\n");
temp = temp.Replace("\\r", "\r");
temp = temp.Replace("\\t", "\t");
tokenStream.Add(new IronJSONToken(temp));
}
// Whitespace, mostly.
else if (m_string[i] == '\n')
{
line++;
tokenStream.AddNewLine();
}
else if (m_string[i] == '\r')
{
if (i + 1 < m_string.Length && m_string[i + 1] == '\n')
{
i++;
line++;
tokenStream.AddNewLine();
}
else
{
throw new JSONException("line " + line.ToString() + ": bad newline");
}
}
else if (Char.IsWhiteSpace(m_string[i]))
{
}
// Used for checking for true, false and null.
else
{
string tmpString = m_string.Substring(i);
if (tmpString.IndexOf("true") == 0)
{
tokenStream.Add(new IronJSONToken(TokenType.True));
i += 3; // Length of "true" minus one. 1 will be added later.
}
else if (tmpString.IndexOf("false") == 0)
{
tokenStream.Add(new IronJSONToken(TokenType.False));
i += 4; // Length of "false" minus one. 1 will be added later.
}
else if (tmpString.IndexOf("null") == 0)
{
tokenStream.Add(new IronJSONToken(TokenType.Null));
i += 3; // Length of "null" minus one. 1 will be added later.
}
else
{
throw new JSONException("line " + line.ToString() + ": " + "unrecognized character: " + m_string[i].ToString());
}
}
}
return tokenStream;
}
public IronJSONParser(IronJSONTokenStream tokenStream)
{
m_tokenStream = tokenStream;
m_obj = null;
}