Topics

• Lookahead and Lookbehind
• Capture Groups
• Recursion
• Character classes
• ForEach
• Introduction to ANTLR v4
• Regular Expression Engine Types
• TestRig / grun
• Lexer rules in v4
• Listeners

Examples

• Simulating variable-length lookbehind with \K
• Named Capture Groups
• Recurse the whole pattern
• Recurse into a subpattern
• Subpattern definitions
• Relative group references
• Extension method for IEnumerable
• Non-alphanumerics matching (negated character class)
• Non-digits matching (negated character class)
• NFA
• DFA
• Simple rules
• Fragments
• Implicit lexer rules
• Priority rules
• Lexer commands
• Actions and semantic predicates
• Listener Events Using Labels
• Build Grammar with Visual Parse Tree