/// <summary>
/// Read a JSON value (presumes the key has already been read) and set the
/// underlying value. There's generally no reason to call this method
/// directly. It is intended to be overridden by an extended type.
/// </summary>
/// <param name="path">path to the value being read</param>
/// <param name="pbr">source reader</param>
/// <exception cref="Gavaghan.JSON.JSONException">on grammar error</exception>
/// <exception cref="System.IO.IOException">on read failure</exception>
public override void Read(string path, PushbackReader pbr)
{
char c = JSONValueFactory.Demand(pbr);
if (c != '[')
{
throw new JSONException(path, "Content does not appear to be an array.");
}
// empty array is an easy out
mFactory.SkipWhitespace(pbr);
c = JSONValueFactory.Demand(pbr);
if (c == ']')
{
return;
}
pbr.Unread(c);
// loop through values
try
{
for (; ;)
{
IJSONValue value = mFactory.Read(path, pbr);
mValue.Add(value);
// get next non-whitespace
mFactory.SkipWhitespace(pbr);
c = JSONValueFactory.Demand(pbr);
// is end?
if (c == ']')
{
return;
}
// is more
if (c == ',')
{
mFactory.SkipWhitespace(pbr);
continue;
}
throw new JSONException(path, "Incorrectly formatted array: " + c);
}
}
finally
{
mFactory = null;
}
}
/// <summary>
/// Read a JSON value (presumes the key has already been read) and set the
/// underlying value. There's generally no reason to call this method
/// directly. It is intended to be overridden by an extended type.
/// </summary>
/// <param name="path">path to the value being read</param>
/// <param name="pbr">source reader</param>
/// <exception cref="Gavaghan.JSON.JSONException">on grammar error</exception>
/// <exception cref="System.IO.IOException">on read failure</exception>
public virtual void Read(string path, PushbackReader pbr)
{
// assert we have an opening brace
char c = JSONValueFactory.Demand(pbr);
if (c != '{')
{
throw new JSONException(path, "Failed to find '{' at start of JSON object.");
}
for (; ;)
{
string key;
// next is either a key or a closing brace
mFactory.SkipWhitespace(pbr);
c = JSONValueFactory.Demand(pbr);
// is it a string?
if (c == '\"')
{
pbr.Unread(c);
key = JSONString.ReadString(path, pbr);
}
// is it a closing brace?
else if (c == '}')
{
break;
}
// else, it's poorly formed
else
{
throw new JSONException(path, "JSON object is not grammatically correct. Unexpected: " + c);
}
// next ought to be a colon
mFactory.SkipWhitespace(pbr);
c = JSONValueFactory.Demand(pbr);
if (c != ':')
{
throw new JSONException(path + "." + key, "Expected ':' after key value");
}
mFactory.SkipWhitespace(pbr);
// next, read a JSONValue
IJSONValue value = mFactory.Read(path + "." + key, pbr);
// add it to the map
Add(key, value);
// next must be comma or close
mFactory.SkipWhitespace(pbr);
c = JSONValueFactory.Demand(pbr);
if (c == ',')
{
continue;
}
if (c == '}')
{
break;
}
throw new JSONException(path, "JSON object is not grammatically correct. Unexpected: " + c);
}
mFactory = null;
}
