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authorMark Mansi <markm@cs.wisc.edu>2018-01-29 11:50:34 -0600
committerMark Mansi <markm@cs.wisc.edu>2018-01-29 11:50:34 -0600
commit767893f428638c5401ac0dda32aa8f3af04509cd (patch)
tree8f113d6c56445bf03b1da05a8224ab2dbb39af7b /src/doc/rustc-dev-guide
parent5c2cc06d50a361afb449b387852342b224e2742f (diff)
downloadrust-767893f428638c5401ac0dda32aa8f3af04509cd.tar.gz
rust-767893f428638c5401ac0dda32aa8f3af04509cd.zip
Corrected relationship of macro and rust parsers
Diffstat (limited to 'src/doc/rustc-dev-guide')
-rw-r--r--src/doc/rustc-dev-guide/src/macro-expansion.md13
1 files changed, 7 insertions, 6 deletions
diff --git a/src/doc/rustc-dev-guide/src/macro-expansion.md b/src/doc/rustc-dev-guide/src/macro-expansion.md
index da4615128a2..a7777e80c3e 100644
--- a/src/doc/rustc-dev-guide/src/macro-expansion.md
+++ b/src/doc/rustc-dev-guide/src/macro-expansion.md
@@ -2,12 +2,13 @@
 
 Macro expansion happens during parsing. `rustc` has two parsers, in fact: the
 normal Rust parser, and the macro parser. During the parsing phase, the normal
-Rust parser will call into the macro parser when it encounters a macro
-definition or macro invocation (TODO: verify). The macro parser, in turn, may
-call back out to the Rust parser when it needs to bind a metavariable (e.g.
-`$my_expr`) while parsing the contents of a macro invocation. The code for macro
-expansion is in [`src/libsyntax/ext/tt/`][code_dir]. This chapter aims to
-explain how macro expansion works.
+Rust parser will set aside the contents of macros and their invokations. Later,
+before name resolution, macros are expanded using these portions of the code.
+The macro parser, in turn, may call the normal Rust parser when it needs to
+bind a metavariable (e.g.  `$my_expr`) while parsing the contents of a macro
+invocation. The code for macro expansion is in
+[`src/libsyntax/ext/tt/`][code_dir]. This chapter aims to explain how macro
+expansion works.
 
 ### Example