/// <summary>
/// Parses a list.
/// </summary>
/// <returns>
/// A <see cref="IronJSONValue"/>
/// </returns>
private IronJSONValue ParseList()
{
IronJSONValue val = new IronJSONValue(ValueType.Array);
VerifyToken(m_tokenStream.CurrentToken,
new TokenType[]{TokenType.LeftSquareBracket});
// Skip the '['
if (!m_tokenStream.ToNextToken())
throw ParseError("expected ']'");
while (!m_tokenStream.AtEnd())
{
// If what we hit a ']', break.
if (m_tokenStream.CurrentToken.Type == TokenType.RightSquareBracket)
{
m_tokenStream.ToNextToken();
break;
}
// Parse the value.
val.Array.Add(ParseValue());
// Skip the ',' or ']'. Error if it's not either.
VerifyToken(m_tokenStream.CurrentToken,
new TokenType[]{TokenType.Comma, TokenType.RightSquareBracket});
if (!m_tokenStream.ToNextToken())
break;
// If what we hit a ']', break.
if (m_tokenStream.PreviousToken.Type == TokenType.RightSquareBracket)
break;
}
return val;
}
/// <summary>
///
/// </summary>
/// <param name="key">
/// A <see cref="System.Object"/>
/// </param>
/// <param name="size">
/// A <see cref="System.Int32"/>
/// </param>
public void SetToArray(object key, int size)
{
if (key is int && m_cd.Type == ValueType.Array)
{
IronJSONValue arr = new IronJSONValue(ValueType.Array);
// Set every element to null.
for (int i = 0; i < size; ++i)
arr.Array.Add(new IronJSONValue(ValueType.Null));
m_cd.Array[(int)key] = arr;
}
else if (key is string && m_cd.Type == ValueType.Object)
{
IronJSONValue arr = new IronJSONValue(ValueType.Array);
// Set every element to null.
for (int i = 0; i < size; ++i)
arr.Array.Add(new IronJSONValue(ValueType.Null));
m_cd.Obj[(string)key] = arr;
}
else
throw new InvalidKeyException(key.ToString());
}
/// <summary>
/// Opens a new file to be read. Overwrite the current
/// JSON object.
/// </summary>
public void Open(string filename)
{
StreamReader reader = new StreamReader(filename);
IronJSONLexer lexer;
IronJSONTokenStream stream;
IronJSONParser parser;
lexer = new IronJSONLexer(reader.ReadToEnd());
stream = lexer.GenerateTokenStream();
parser = new IronJSONParser(stream);
parser.Parse();
m_obj = parser.Obj;
m_cd = new IronJSONValue(m_obj);
m_curPath = new ArrayList();
reader.Close();
}
/// <summary>
/// Constructs an empty JSON object.
/// </summary>
public JSONManager()
{
m_obj = new IronJSONObject();
m_cd = new IronJSONValue(m_obj);
m_curPath = new ArrayList();
}
/// <summary>
///
/// </summary>
/// <param name="path">
/// A <see cref="Path"/>
/// </param>
/// <param name="keys">
/// A <see cref="System.Object[]"/>
/// </param>
public void Cd(Path path, params object[] keys)
{
if (path == Path.Absolute)
{
m_cd = new IronJSONValue(m_obj);
m_curPath.Clear();
}
foreach (object o in keys)
{
if (o is int)
{
if (m_cd.Type != ValueType.Array)
throw new InvalidKeyException(CurrentPath + o.ToString());
try
{
m_cd = (IronJSONValue)m_cd.Array[(int)o];
}
// Out of range of the array.
catch (System.ArgumentOutOfRangeException)
{
throw new KeyNotFoundException(CurrentPath + o.ToString());
}
}
else if (o is string)
{
if (m_cd.Type != ValueType.Object)
throw new InvalidKeyException(CurrentPath + o.ToString());
else if (!m_cd.Obj.ContainsKey((string)o))
throw new KeyNotFoundException(CurrentPath + o.ToString());
m_cd = (IronJSONValue)m_cd.Obj[(string)o];
}
else
{
throw new InvalidKeyException(o.ToString());
}
// Validate, make sure we CDed to an object or array.
if (m_cd.Type != ValueType.Array && m_cd.Type != ValueType.Object)
throw new InvalidLocationException("change directory (Cd)", CurrentPath + o.ToString());
m_curPath.Add(o);
}
}
