extern-crate-self-macro-alias.rs

//@ run-pass

// Test that a macro can correctly expand the alias
// in an `extern crate self as ALIAS` item.

fn the_answer() -> usize { 42 }

macro_rules! alias_self {
    ($alias:ident) => { extern crate self as $alias; }
}

alias_self!(the_alias);

fn main() {
    assert_eq!(the_alias::the_answer(), 42);
}

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// Declarative Macros
//
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// Macro Expansion
//
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// Macro Invocation
//
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// Macro Matching
//
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// Macro Transcription
//
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// Metavariables
//
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// Rule Matching
//
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// Token Matching