<p>I was looking into a blog post from back in 2015 about the Go Internals ( blog.altoros.com/golang-part-1-main-concepts-and-project-structure.html ), and it states that the development used Bison for Grammar and Parser. </p>
<p>It seems that it has changed. How are the Lexical and Grammatical parts of Golang being developed now ? How can I go deeper into understanding it ?</p>
<hr/>**评论：**<br/><br/>dgryski: <pre><p>Yes, it now uses a hand-written recursive descent parser I believe.</p></pre>kostix: <pre><blockquote>
<p>The yacc tool (previously available by running “go tool yacc”) has been removed. As of Go 1.7 it was no longer used by the Go compiler. It has moved to the “tools” repository and is now available at golang.org/x/tools/cmd/goyacc.</p>
</blockquote>
<p><a href="https://golang.org/doc/go1.8#tool_yacc" rel="nofollow">https://golang.org/doc/go1.8#tool_yacc</a></p>
<p>The first version of Go written in Go (self-bootstrapped)
was <a href="https://golang.org/doc/go1.5#c" rel="nofollow">1.5</a>.</p></pre>jackmott2: <pre><p>not entirely relevant but rob pike had a nice talk on writing a lexer in Go:</p>
<p><a href="https://www.youtube.com/watch?v=HxaD_trXwRE&t=1579s" rel="nofollow">https://www.youtube.com/watch?v=HxaD_trXwRE&t=1579s</a></p></pre>auyer: <pre><p>Very relevant to be honest.</p></pre>
