private bool CheckPreviousIsVariable(Token token)
{
if (token.Type == TokenType.CloseBracket) return true;
if (token.Type == TokenType.String) return false;
if (token.Type == TokenType.Literal)
{
if (String.IsNullOrEmpty(token.Value))
{
return true;
}
#region determine defined variables
switch (token.Value.ToLower())
{
case "we":
case "our":
case "us":
case "@":
case "block":
case "blocks":
case "blocking":
case "blockings":
case "user":
case "retweeter":
case "protected":
case "isprotected":
case "is_protected":
case "verified":
case "isverified":
case "is_verified":
case "translator":
case "istranslator":
case "is_translator":
case "contributorsenabled":
case "contributors_enabled":
case "iscontributorsenabled":
case "is_contributors_enabled":
case "geoenabled":
case "geo_enabled":
case "isgeoenabled":
case "is_geo_enabled":
case "id":
case "status":
case "statuses":
case "statuscount":
case "status_count":
case "statusescount":
case "statuses_count":
case "friend":
case "friends":
case "following":
case "followings":
case "friendscount":
case "friends_count":
case "followingscount":
case "followings_count":
case "follower":
case "followers":
case "followerscount":
case "followers_count":
case "fav":
case "favs":
case "favorite":
case "favorites":
case "favscount":
case "favs_count":
case "favoritescount":
case "favorites_count":
case "list":
case "listed":
case "listcount":
case "list_count":
case "listedcount":
case "listed_count":
case "screenname":
case "screen_name":
case "name":
case "username":
case "bio":
case "desc":
case "description":
case "loc":
case "location":
case "lang":
case "language":
case "dm":
case "isdm":
case "is_dm":
case "message":
case "ismessage":
case "is_message":
case "directmessage":
case "direct_message":
case "isdirectmessage":
case "is_direct_message":
case "rt":
case "retweet":
case "isretweet":
case "is_retweet":
case "replyto":
case "reply_to":
case "inreplyto":
case "in_reply_to":
case "mention":
case "to":
case "favorer":
case "favorers":
case "rts":
case "retweets":
case "retweeters":
case "text":
case "body":
case "via":
case "from":
case "source":
case "client":
return true;
}
#endregion
switch (token.Value[0])
{
case '@':
case '#':
return true;
}
long n;
return Int64.TryParse(token.Value, out n);
}
return false;
}
private static ValueBase GetValue(TokenReader reader)
{
var literal = reader.LookAhead();
if (literal.Type == TokenType.String)
{
// immediate string value
return new StringValue(reader.AssertGet(TokenType.String).Value);
}
if (literal.Type == TokenType.OperatorMultiple)
{
// for parsing asterisk user
var pseudo = reader.AssertGet(TokenType.OperatorMultiple);
literal = new Token(TokenType.Literal, "*", pseudo.DebugIndex);
}
else
{
literal = reader.AssertGet(TokenType.Literal);
}
// check first letter
switch (literal.Value[0])
{
case '@':
// user screen name
return GetAccountValue(literal.Value.Substring(1), reader);
case '#':
// user id
return GetAccountValue(literal.Value, reader);
}
// check first layers
switch (literal.Value.ToLower())
{
case "*":
case "we":
case "our":
case "us":
return GetAccountValue("*", reader);
case "@":
reader.AssertGet(TokenType.Period);
return GetAccountValue(reader.AssertGet(TokenType.Literal).Value, reader);
case "user":
case "retweeter":
return GetUserValue(literal.Value == "retweeter", reader);
case "list":
return GetListValue(reader);
default:
long iv;
if (Int64.TryParse(literal.Value, out iv))
{
return new NumericValue(iv);
}
return GetStatusValue(literal.Value, reader);
}
}
private static ValueBase InstantiateValue(TokenReader reader)
{
Token literal = reader.LookAhead();
if (literal.Type == TokenType.String)
{
// immediate string value
return new StringValue(reader.AssertGet(TokenType.String).Value);
}
if (literal.Type == TokenType.OperatorMultiple)
{
// for parsing asterisk user
Token pseudo = reader.AssertGet(TokenType.OperatorMultiple);
literal = new Token(TokenType.Literal, "*", pseudo.DebugIndex);
}
else
{
literal = reader.AssertGet(TokenType.Literal);
}
// check first layers
switch (literal.Value)
{
case "*":
return InstantiateLocalUsers("*", reader);
case "local":
reader.AssertGet(TokenType.Period);
return InstantiateLocalUsers(reader.AssertGet(TokenType.Literal).Value, reader);
case "user":
case "retweeter":
return InstantiateUserValue(literal.Value == "retweeter", reader);
default:
long iv;
if (Int64.TryParse(literal.Value, out iv))
{
return new NumericValue(iv);
}
return InstantiateStatusValue(literal.Value, reader);
}
}
