Lexing & Parsing

Knows lexical analysis basics: source code tokenization, regular grammars and finite automata. Can implement a simple lexer manually, understands the practical difference between lexer and parser.

Understands lexer/parser fundamentals: tokenization, grammar rules, and AST construction. Writes simple lexers using regular expressions and modifies existing parser rules for language tooling.

Understands basic concepts of lexical analysis and parsing: tokens, grammars, and parse trees. Reads and traces through existing lexer/parser code to understand language processing pipelines.

Implements LL(k) and LR parsers, builds AST for programming languages. Uses parser generators (ANTLR, yacc/bison). Handles syntax errors with error recovery strategies.

Implements recursive descent and PEG parsers for DSLs. Builds error-recovery mechanisms for partial parsing to support IDE features. Generates syntax-highlighted token streams from lexer output.

Implements lexers and parsers for system-level languages using tools like flex/bison or hand-written recursive descent. Handles operator precedence, ambiguity resolution, and efficient token buffering.

Designs complete compiler frontend: lexer, recursive descent parser, AST builder. Implements Pratt parsing for operator precedence. Optimizes parsing performance for large codebases.

Designs incremental parsing architectures (tree-sitter style) for real-time editor feedback. Implements grammar composition for embedded languages and optimizes parser performance for large source files.

Designs compiler front-end architectures with custom lexer generators and GLR/Earley parsers for complex grammars. Implements source-map-preserving transformations and mentors team on formal language theory.

Defines frontend architecture for a new language or dialect, makes grammar decisions. Establishes parser quality standards for the team, conducts code reviews focusing on correctness.

Defines compiler architecture. Establishes development standards. Coordinates compiler team.

Defines compiler architecture. Establishes development standards. Coordinates the compiler team.

Shapes language frontend technical standards for the platform. Researches and introduces advanced parsing methods (Earley, PEG, GLL). Publishes open source solutions and influences the tooling ecosystem.

Defines compiler/language development strategy. Designs core language features. Shapes technology vision.

Defines compiler/language development strategy. Designs core language features. Establishes technology vision.