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| author | mark <markm@cs.wisc.edu> | 2020-04-30 11:33:05 -0500 |
|---|---|---|
| committer | Who? Me?! <mark-i-m@users.noreply.github.com> | 2020-05-08 09:42:27 -0500 |
| commit | 41c1e3d7f5077b26e1443b5db0f95c59b1cd0843 (patch) | |
| tree | d97da5e47215820b7ca726c6d14348a3d5d8183e /src/doc/rustc-dev-guide | |
| parent | 52ffc3edfcbef33f64b13b293d858955e93f2181 (diff) | |
| download | rust-41c1e3d7f5077b26e1443b5db0f95c59b1cd0843.tar.gz rust-41c1e3d7f5077b26e1443b5db0f95c59b1cd0843.zip | |
add a bit to syntax intro
Diffstat (limited to 'src/doc/rustc-dev-guide')
| -rw-r--r-- | src/doc/rustc-dev-guide/src/syntax-intro.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/doc/rustc-dev-guide/src/syntax-intro.md b/src/doc/rustc-dev-guide/src/syntax-intro.md index dd7e2d73594..43ef4457746 100644 --- a/src/doc/rustc-dev-guide/src/syntax-intro.md +++ b/src/doc/rustc-dev-guide/src/syntax-intro.md @@ -6,3 +6,8 @@ out that doing even this involves a lot of work, including lexing, parsing, macro expansion, name resolution, conditional compilation, feature-gate checking, and validation of the AST. In this chapter, we take a look at all of these steps. + +Notably, there isn't always a clean ordering between these tasks. For example, +macro expansion relies on name resolution to resolve the names of macros and +imports. And parsing requires macro expansion, which in turn may require +parsing the output of the macro. |