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I would like to mention that most, if not all, of the Go compiler and related utilities is written in Go itself, with high quality, open source code that can be

by etatoby 10y ago

I would like to mention that most, if not all, of the Go compiler and related utilities is written in Go itself, with high quality, open source code that can be found in the "go" package of the standard library: https://golang.org/pkg/go/ https://golang.org/pkg/go/ I would recommend using that as a template for one's own compiler, because it's written in idiomatic Go (originally by the language creators) and is cleanly split across abstraction boundaries (packages "scanner", "parser", "ast", and so on.) There's also a smaller, simpler parser in the "text/template/parse" package, that is used to parse the templating languages in "text/template" and "html/template". As an introduction to it, I recommend the talk "Lexical Scanning in Go" by Rob Pike: https://www.youtube.com/watch?v=HxaD_trXwRE https://www.youtube.com/watch?v=HxaD_trXwRE

jerf 10y ago
Actually, after a quick examination of the Go libraries, I'm not sure I can agree that it's "idiomatic Go". I still see many things that strike me as "artifacts of the C conversion" more than "the way someone would have written this from scratch". The careful package split is something to be copied, though.
- iso-8859-1 10y ago
  The conversion from C to Go was done in 2014, so it is surprising that it is not complete yet. See "Go, From C to Go by Russ Cox" (with video) at https://github.com/gophercon/2014-talks https://github.com/gophercon/2014-talks
  - f2f 10y ago
    it is complete, but it's a conversion, not a rewrite. i doubt anyone will spend the time to rewrite the compiler in idiomatic Go soon. bigger fish to fry :)
- stcredzero 10y ago
  Where is a good place to read "idiomatic Go?"
  - jerf 10y ago
    Much of the rest of the standard library. The compiler portion is a special case.
  - deleted 10y ago
    [deleted]
  - freyr 10y ago
    The standard library.
coldtea 10y ago
>I would like to mention that most, if not all, of the Go compiler and related utilities is written in Go itself, with high quality, open source code High quality? Isn't the compiler since 1.5 auto-generated from C for the most part, and quite crap with regards to optimizations/readability?

by etatoby 10y ago

jerf 10y ago

Actually, after a quick examination of the Go libraries, I'm not sure I can agree that it's "idiomatic Go". I still see many things that strike me as "artifacts of the C conversion" more than "the way someone would have written this from scratch". The careful package split is something to be copied, though.

iso-8859-1 10y ago
The conversion from C to Go was done in 2014, so it is surprising that it is not complete yet. See "Go, From C to Go by Russ Cox" (with video) at https://github.com/gophercon/2014-talks https://github.com/gophercon/2014-talks
- f2f 10y ago
  it is complete, but it's a conversion, not a rewrite. i doubt anyone will spend the time to rewrite the compiler in idiomatic Go soon. bigger fish to fry :)
stcredzero 10y ago
Where is a good place to read "idiomatic Go?"
- jerf 10y ago
  Much of the rest of the standard library. The compiler portion is a special case.
- deleted 10y ago
  [deleted]
- freyr 10y ago
  The standard library.

coldtea 10y ago

>I would like to mention that most, if not all, of the Go compiler and related utilities is written in Go itself, with high quality, open source code High quality? Isn't the compiler since 1.5 auto-generated from C for the most part, and quite crap with regards to optimizations/readability?