55 lines
1019 B
Rust
55 lines
1019 B
Rust
// compile-flags: -Z trace-macros
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#![recursion_limit = "4"]
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macro_rules! my_faulty_macro {
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() => {
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my_faulty_macro!(bcd); //~ ERROR no rules
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};
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}
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macro_rules! pat_macro {
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() => {
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pat_macro!(A{a:a, b:0, c:_, ..});
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};
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($a:pat) => {
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$a //~ ERROR expected expression
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};
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}
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macro_rules! my_recursive_macro {
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() => {
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my_recursive_macro!(); //~ ERROR recursion limit
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};
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}
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macro_rules! my_macro {
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() => {};
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}
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fn main() {
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my_faulty_macro!();
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my_recursive_macro!();
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test!();
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non_exisiting!();
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derive!(Debug);
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let a = pat_macro!();
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}
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#[my_macro]
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fn use_bang_macro_as_attr() {}
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#[derive(Debug)] //~ ERROR `derive` may only be applied to `struct`s
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fn use_derive_macro_as_attr() {}
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macro_rules! test {
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(let $p:pat = $e:expr) => {test!(($p,$e))};
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// this should be expr
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// vvv
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(($p:pat, $e:pat)) => {let $p = $e;}; //~ ERROR expected expression, found pattern `1 + 1`
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}
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fn foo() {
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test!(let x = 1+1);
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}
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