| Class | Description | 
|---|---|
| RegexAnnotatedTypeFactory | 
 Adds  
Regex to the type of tree, in the following cases:
 
   String or char literal that is a valid regular expression
   String or
       char) or two partial regular expression values that make a valid regular expression
       when concatenated. | 
| RegexChecker | 
 A type-checker plug-in for the  
Regex qualifier that finds syntactically invalid regular
 expressions. | 
| RegexTransfer | |
| RegexUtil | 
 Utility methods for regular expressions, most notably for testing whether a string is a regular
 expression. 
 | 
| RegexVisitor | 
 A type-checking visitor for the Regex type system. 
 | 
| Exception | Description | 
|---|---|
| RegexUtil.CheckedPatternSyntaxException | 
 A checked version of  
PatternSyntaxException. |