internal override void Detect(Lexer l)
{
if (!(l.Char == ' ' || (l.Char >= '0' && l.Char <= '9') || (l.Char >= 'a' && l.Char <= 'z') ||
(l.Char >= 'A' && l.Char <= 'Z') || l.Char == '\n' || l.Char == '\t' || l.Char == '\r' ||
l.Char == '{' || l.Char == '_' || l.Char == ',' || l.Char == '(' || l.Char == ')' ||
l.Char == ':' || l.Char == ';' || l.Char == '*' || l.Char == '<' || l.Char == '>' ||
l.Char == '[' || l.Char == ']' || l.Char == '-' || l.Char == '.' || l.Char == '"' ||
l.Char == '&'))
{
l.ForceExclude(); // contains characters we can't accept.
return;
}
if (l.Text.Contains('='))
{
l.ForceExclude(); // contains characters we can't accept.
return;
}
if (!(l.GetParent() is ClassDefinitionToken))
{
l.ForceExclude(); // not within a class.
return;
}
KeywordResult res = Keywords.GetKeywords(l.Text);
if (res.Keywords.Count > 0 && res.PossibleKeyword == false)
{
// Now use regular expression checking against the substring starting
// at res.DeclIndex to determine whether it's a variable declaration.
string decl = l.Text.Substring(res.DeclIndex).Trim();
if (decl.EndsWith(";"))
{
// Show 'expected {' error.
Console.WriteLine("Error: expected '{', not ';' on line " + l.LineNumber + " within file " + l.FileName + ".\nError: Check the end of your function definitions.");
l.Abort();
return;
}
if (!decl.EndsWith("{"))
{
return; // Skip if we don't have a terminating character.
}
Regex r = new Regex(
"(?<Type>[a-zA-Z][a-zA-z0-9_\\:\\<\\>]+[ \t\r\n\\*]+)?" +
"(?<Name>[a-zA-Z][a-zA-z0-9_]*[ \t\r\n]*\\([ \t\r\na-zA-Z0-9_&,-\\.\\:\\*\\<\\>\\[\\]\\\"]*\\))[ \t\r\n]*\\{"
);
Match m = r.Match(decl);
if (m.Success)
{
// It's a function declaration.
l.TakeOwnership();
l.AddNode(new DirectNode("\n"));
l.AddNode(new ClassFunctionDeclarationNode(res.Keywords, m.Groups["Type"].Value.Trim(), m.Groups["Name"].Value.Trim()));
l.AddParent();
l.EndOwnership();
}
else
{
// A different kind of declaration that we aren't handling...
l.ForceExclude();
}
}
}