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-rw-r--r--tests/ui/macros/macro-follow.rs114
1 files changed, 114 insertions, 0 deletions
diff --git a/tests/ui/macros/macro-follow.rs b/tests/ui/macros/macro-follow.rs
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+++ b/tests/ui/macros/macro-follow.rs
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+//
+// Check the macro follow sets (see corresponding rpass test).
+
+#![allow(unused_macros)]
+
+// FOLLOW(pat) = {FatArrow, Comma, Eq, Or, Ident(if), Ident(in)}
+macro_rules! follow_pat {
+ ($p:pat ()) => {}; //~ERROR `$p:pat` is followed by `(`
+ ($p:pat []) => {}; //~ERROR `$p:pat` is followed by `[`
+ ($p:pat {}) => {}; //~ERROR `$p:pat` is followed by `{`
+ ($p:pat :) => {}; //~ERROR `$p:pat` is followed by `:`
+ ($p:pat >) => {}; //~ERROR `$p:pat` is followed by `>`
+ ($p:pat +) => {}; //~ERROR `$p:pat` is followed by `+`
+ ($p:pat ident) => {}; //~ERROR `$p:pat` is followed by `ident`
+ ($p:pat $q:pat) => {}; //~ERROR `$p:pat` is followed by `$q:pat`
+ ($p:pat $e:expr) => {}; //~ERROR `$p:pat` is followed by `$e:expr`
+ ($p:pat $t:ty) => {}; //~ERROR `$p:pat` is followed by `$t:ty`
+ ($p:pat $s:stmt) => {}; //~ERROR `$p:pat` is followed by `$s:stmt`
+ ($p:pat $q:path) => {}; //~ERROR `$p:pat` is followed by `$q:path`
+ ($p:pat $b:block) => {}; //~ERROR `$p:pat` is followed by `$b:block`
+ ($p:pat $i:ident) => {}; //~ERROR `$p:pat` is followed by `$i:ident`
+ ($p:pat $t:tt) => {}; //~ERROR `$p:pat` is followed by `$t:tt`
+ ($p:pat $i:item) => {}; //~ERROR `$p:pat` is followed by `$i:item`
+ ($p:pat $m:meta) => {}; //~ERROR `$p:pat` is followed by `$m:meta`
+}
+// FOLLOW(expr) = {FatArrow, Comma, Semicolon}
+macro_rules! follow_expr {
+ ($e:expr ()) => {}; //~ERROR `$e:expr` is followed by `(`
+ ($e:expr []) => {}; //~ERROR `$e:expr` is followed by `[`
+ ($e:expr {}) => {}; //~ERROR `$e:expr` is followed by `{`
+ ($e:expr =) => {}; //~ERROR `$e:expr` is followed by `=`
+ ($e:expr |) => {}; //~ERROR `$e:expr` is followed by `|`
+ ($e:expr :) => {}; //~ERROR `$e:expr` is followed by `:`
+ ($e:expr >) => {}; //~ERROR `$e:expr` is followed by `>`
+ ($e:expr +) => {}; //~ERROR `$e:expr` is followed by `+`
+ ($e:expr ident) => {}; //~ERROR `$e:expr` is followed by `ident`
+ ($e:expr if) => {}; //~ERROR `$e:expr` is followed by `if`
+ ($e:expr in) => {}; //~ERROR `$e:expr` is followed by `in`
+ ($e:expr $p:pat) => {}; //~ERROR `$e:expr` is followed by `$p:pat`
+ ($e:expr $f:expr) => {}; //~ERROR `$e:expr` is followed by `$f:expr`
+ ($e:expr $t:ty) => {}; //~ERROR `$e:expr` is followed by `$t:ty`
+ ($e:expr $s:stmt) => {}; //~ERROR `$e:expr` is followed by `$s:stmt`
+ ($e:expr $p:path) => {}; //~ERROR `$e:expr` is followed by `$p:path`
+ ($e:expr $b:block) => {}; //~ERROR `$e:expr` is followed by `$b:block`
+ ($e:expr $i:ident) => {}; //~ERROR `$e:expr` is followed by `$i:ident`
+ ($e:expr $t:tt) => {}; //~ERROR `$e:expr` is followed by `$t:tt`
+ ($e:expr $i:item) => {}; //~ERROR `$e:expr` is followed by `$i:item`
+ ($e:expr $m:meta) => {}; //~ERROR `$e:expr` is followed by `$m:meta`
+}
+// FOLLOW(ty) = {OpenDelim(Brace), Comma, FatArrow, Colon, Eq, Gt, Semi, Or,
+// Ident(as), Ident(where), OpenDelim(Bracket), Nonterminal(Block)}
+macro_rules! follow_ty {
+ ($t:ty ()) => {}; //~ERROR `$t:ty` is followed by `(`
+ ($t:ty []) => {}; // ok (RFC 1462)
+ ($t:ty +) => {}; //~ERROR `$t:ty` is followed by `+`
+ ($t:ty ident) => {}; //~ERROR `$t:ty` is followed by `ident`
+ ($t:ty if) => {}; //~ERROR `$t:ty` is followed by `if`
+ ($t:ty $p:pat) => {}; //~ERROR `$t:ty` is followed by `$p:pat`
+ ($t:ty $e:expr) => {}; //~ERROR `$t:ty` is followed by `$e:expr`
+ ($t:ty $r:ty) => {}; //~ERROR `$t:ty` is followed by `$r:ty`
+ ($t:ty $s:stmt) => {}; //~ERROR `$t:ty` is followed by `$s:stmt`
+ ($t:ty $p:path) => {}; //~ERROR `$t:ty` is followed by `$p:path`
+ ($t:ty $b:block) => {}; // ok (RFC 1494)
+ ($t:ty $i:ident) => {}; //~ERROR `$t:ty` is followed by `$i:ident`
+ ($t:ty $r:tt) => {}; //~ERROR `$t:ty` is followed by `$r:tt`
+ ($t:ty $i:item) => {}; //~ERROR `$t:ty` is followed by `$i:item`
+ ($t:ty $m:meta) => {}; //~ERROR `$t:ty` is followed by `$m:meta`
+}
+// FOLLOW(stmt) = FOLLOW(expr)
+macro_rules! follow_stmt {
+ ($s:stmt ()) => {}; //~ERROR `$s:stmt` is followed by `(`
+ ($s:stmt []) => {}; //~ERROR `$s:stmt` is followed by `[`
+ ($s:stmt {}) => {}; //~ERROR `$s:stmt` is followed by `{`
+ ($s:stmt =) => {}; //~ERROR `$s:stmt` is followed by `=`
+ ($s:stmt |) => {}; //~ERROR `$s:stmt` is followed by `|`
+ ($s:stmt :) => {}; //~ERROR `$s:stmt` is followed by `:`
+ ($s:stmt >) => {}; //~ERROR `$s:stmt` is followed by `>`
+ ($s:stmt +) => {}; //~ERROR `$s:stmt` is followed by `+`
+ ($s:stmt ident) => {}; //~ERROR `$s:stmt` is followed by `ident`
+ ($s:stmt if) => {}; //~ERROR `$s:stmt` is followed by `if`
+ ($s:stmt in) => {}; //~ERROR `$s:stmt` is followed by `in`
+ ($s:stmt $p:pat) => {}; //~ERROR `$s:stmt` is followed by `$p:pat`
+ ($s:stmt $e:expr) => {}; //~ERROR `$s:stmt` is followed by `$e:expr`
+ ($s:stmt $t:ty) => {}; //~ERROR `$s:stmt` is followed by `$t:ty`
+ ($s:stmt $t:stmt) => {}; //~ERROR `$s:stmt` is followed by `$t:stmt`
+ ($s:stmt $p:path) => {}; //~ERROR `$s:stmt` is followed by `$p:path`
+ ($s:stmt $b:block) => {}; //~ERROR `$s:stmt` is followed by `$b:block`
+ ($s:stmt $i:ident) => {}; //~ERROR `$s:stmt` is followed by `$i:ident`
+ ($s:stmt $t:tt) => {}; //~ERROR `$s:stmt` is followed by `$t:tt`
+ ($s:stmt $i:item) => {}; //~ERROR `$s:stmt` is followed by `$i:item`
+ ($s:stmt $m:meta) => {}; //~ERROR `$s:stmt` is followed by `$m:meta`
+}
+// FOLLOW(path) = FOLLOW(ty)
+macro_rules! follow_path {
+ ($p:path ()) => {}; //~ERROR `$p:path` is followed by `(`
+ ($p:path []) => {}; // ok (RFC 1462)
+ ($p:path +) => {}; //~ERROR `$p:path` is followed by `+`
+ ($p:path ident) => {}; //~ERROR `$p:path` is followed by `ident`
+ ($p:path if) => {}; //~ERROR `$p:path` is followed by `if`
+ ($p:path $q:pat) => {}; //~ERROR `$p:path` is followed by `$q:pat`
+ ($p:path $e:expr) => {}; //~ERROR `$p:path` is followed by `$e:expr`
+ ($p:path $t:ty) => {}; //~ERROR `$p:path` is followed by `$t:ty`
+ ($p:path $s:stmt) => {}; //~ERROR `$p:path` is followed by `$s:stmt`
+ ($p:path $q:path) => {}; //~ERROR `$p:path` is followed by `$q:path`
+ ($p:path $b:block) => {}; // ok (RFC 1494)
+ ($p:path $i:ident) => {}; //~ERROR `$p:path` is followed by `$i:ident`
+ ($p:path $t:tt) => {}; //~ERROR `$p:path` is followed by `$t:tt`
+ ($p:path $i:item) => {}; //~ERROR `$p:path` is followed by `$i:item`
+ ($p:path $m:meta) => {}; //~ERROR `$p:path` is followed by `$m:meta`
+}
+// FOLLOW(block) = any token
+// FOLLOW(ident) = any token
+
+fn main() {}