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macro-context.rs
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macro-context.rs
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// (typeof used because it's surprisingly hard to find an unparsed token after a stmt)
macro_rules! m {
() => ( i ; typeof ); //~ ERROR expected expression, found reserved keyword `typeof`
//~| ERROR macro expansion ignores token `typeof`
//~| ERROR macro expansion ignores token `;`
//~| ERROR macro expansion ignores token `;`
//~| ERROR cannot find type `i` in this scope
//~| ERROR cannot find value `i` in this scope
//~| WARN trailing semicolon in macro
//~| WARN this was previously
}
fn main() {
let a: m!();
let i = m!();
match 0 {
m!() => {}
}
m!();
}
// ferrocene-annotations: fls_xa7lp0zg1ol2
// Declarative Macros
//
// ferrocene-annotations: fls_wjldgtio5o75
// Macro Expansion
//
// ferrocene-annotations: fls_vnvt40pa48n8
// Macro Invocation
//
// ferrocene-annotations: fls_4apk1exafxii
// Macro Matching
//
// ferrocene-annotations: fls_ym00b6ewf4n3
// Macro Transcription
//
// ferrocene-annotations: fls_8nzypdu9j3ge
// Metavariables
//
// ferrocene-annotations: fls_n3ktmjqf87qb
// Rule Matching
//
// ferrocene-annotations: fls_qpx6lgapce57
// Token Matching