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