/// Author: Max Hamulyak
/// Date: 19-06-2015
/// <summary>
/// Parses the call to a user function.
/// </summary>
/// <returns>The function call.</returns>
/// <param name="tokensAtCurrentLine">Tokens at current line.</param>
protected virtual FunctionBlockExecute ParseFunctionCall(List<Token> tokensAtCurrentLine)
{
Token tokenToParse = tokensAtCurrentLine.First ();
tokensAtCurrentLine.Remove (tokenToParse);
tokensAtCurrentLine.RemoveAll (x => x.Type == ETokenType.CommentLine || x.Type == ETokenType.EOL || x.Type == ETokenType.WhiteSpace);
if (tokensAtCurrentLine.Count > 0) {
throw TokenAfterFunctionCall (tokenToParse.Position.Line, tokenToParse.Value, tokensAtCurrentLine.First ().Value);
}
string functionName = tokenToParse.Value.TrimEnd ("()".ToCharArray()).Trim();
FunctionBlockExecute executeFunction = new FunctionBlockExecute (functionName);
executeFunction.LineNumber = tokenToParse.Position.Line;
return executeFunction;
}
protected override FunctionBlockExecute ParseFunctionCall(List<Token> tokensAtCurrentLine)
{
Token tokenToParse = tokensAtCurrentLine.First ();
int headerLineNumber = tokenToParse.Position.Line;
tokensAtCurrentLine.RemoveAll (x => x.Type == ETokenType.CommentLine || x.Type == ETokenType.EOL || x.Type == ETokenType.WhiteSpace);
Token semicolonToken = tokensAtCurrentLine.FirstOrDefault (x => x.Value == ";");
if (semicolonToken == null) {
throw MissingSemicolonException (tokenToParse.Position.Line, tokenToParse.Value);
} else {
int myIndex = tokensAtCurrentLine.IndexOf (semicolonToken);
List<Token> tokensTillRange = tokensAtCurrentLine.GetRange (1, myIndex - 1);
List<Token> tokensAfterRange = tokensAtCurrentLine.GetRange (myIndex + 1, tokensAtCurrentLine.Count - myIndex - 1);
Token errorToken = null;
if (tokensTillRange.Count != 0) {
errorToken = tokensTillRange.First ();
throw ValueBeforeSemicolon (headerLineNumber,tokenToParse, errorToken);
} else if (tokensAfterRange.Count != 0) {
errorToken = tokensAfterRange.First ();
throw ValueAfterSemicolon (headerLineNumber,tokenToParse, errorToken);
}
tokensAtCurrentLine.Remove (tokenToParse);
string functionName = tokenToParse.Value.TrimEnd ("()".ToCharArray ()).Trim ();
FunctionBlockExecute executeFunction = new FunctionBlockExecute (functionName);
executeFunction.LineNumber = tokenToParse.Position.Line;
return executeFunction;
}
}
