Languages / Knowledge library
Lexical Analysis
Converts source characters into classified tokens
Why learn Lexical Analysis?
It separates low-level spelling rules from grammatical parsing
The problem it solves
It gives a parser a structured token stream instead of raw text
Where it came from
Lexical Analysis is a programming language and runtime concept that converts source characters into classified tokens. Its guarantees and tradeoffs depend on the concrete implementation and operating context.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Define Lexical Analysis and distinguish it from a neighboring concept.
- Choose a realistic task where Lexical Analysis is appropriate.
- Identify a failure mode caused by misusing Lexical Analysis.
- Interpret a small design or result involving Lexical Analysis.
- Explain one tradeoff or limitation of Lexical Analysis.
Documentation and sources
- LLVM Language Reference Manual (llvm.org)