Go 语言中的词法扫描

Rob Pike shows how the Go text/template lexer is built, using state functions, goroutines and channels. The talk was given at a Google Technology User Group in Sydney in 2011.

Why HN likes it: HN returns to it for years as an elegant introduction to writing a lexer that is easy to follow even without a parsing background.

“It's far more interesting than it sounds, and even if you don't know much about lexing/parsing it's easy to follow.”