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macro-expansion-tests.rs
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macro-expansion-tests.rs
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#![allow(unused_macros)]
mod macros_cant_escape_fns {
fn f() {
macro_rules! m { () => { 3 + 4 } }
}
fn g() -> i32 { m!() }
//~^ ERROR cannot find macro
}
mod macros_cant_escape_mods {
mod f {
macro_rules! m { () => { 3 + 4 } }
}
fn g() -> i32 { m!() }
//~^ ERROR cannot find macro
}
mod macros_can_escape_flattened_mods_test {
#[macro_use]
mod f {
macro_rules! m { () => { 3 + 4 } }
}
fn g() -> i32 { m!() }
}
fn macro_tokens_should_match() {
macro_rules! m { (a) => { 13 } }
m!(a);
}
// should be able to use a bound identifier as a literal in a macro definition:
fn self_macro_parsing() {
macro_rules! foo { (zz) => { 287; } }
fn f(zz: i32) {
foo!(zz);
}
}
fn main() {}
// 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