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authorAlbert Larsan <74931857+albertlarsan68@users.noreply.github.com>2023-01-05 09:13:28 +0100
committerAlbert Larsan <74931857+albertlarsan68@users.noreply.github.com>2023-01-11 09:32:08 +0000
commitcf2dff2b1e3fa55fa5415d524200070d0d7aacfe (patch)
tree40a88d9a46aaf3e8870676eb2538378b75a263eb /tests/ui/macros/nonterminal-matching.rs
parentca855e6e42787ecd062d81d53336fe6788ef51a9 (diff)
downloadrust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.tar.gz
rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.zip
Move /src/test to /tests
Diffstat (limited to 'tests/ui/macros/nonterminal-matching.rs')
-rw-r--r--tests/ui/macros/nonterminal-matching.rs26
1 files changed, 26 insertions, 0 deletions
diff --git a/tests/ui/macros/nonterminal-matching.rs b/tests/ui/macros/nonterminal-matching.rs
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+++ b/tests/ui/macros/nonterminal-matching.rs
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+// Check that we are refusing to match on complex nonterminals for which tokens are
+// unavailable and we'd have to go through AST comparisons.
+
+#![feature(decl_macro)]
+
+macro simple_nonterminal($nt_ident: ident, $nt_lifetime: lifetime, $nt_tt: tt) {
+    macro n(a $nt_ident b $nt_lifetime c $nt_tt d) {
+        struct S;
+    }
+
+    n!(a $nt_ident b $nt_lifetime c $nt_tt d);
+}
+
+macro complex_nonterminal($nt_item: item) {
+    macro n(a $nt_item b) {
+        struct S;
+    }
+
+    n!(a $nt_item b); //~ ERROR no rules expected the token `enum E {}`
+}
+
+simple_nonterminal!(a, 'a, (x, y, z)); // OK
+
+complex_nonterminal!(enum E {});
+
+fn main() {}