mirror of https://github.com/rust-lang/rust
54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
//@ aux-build:parent-source-spans.rs
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#![feature(decl_macro)]
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extern crate parent_source_spans;
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use parent_source_spans::parent_source_spans;
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macro one($a:expr, $b:expr) {
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two!($a, $b);
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//~^ ERROR first parent: "hello"
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//~| ERROR second parent: "world"
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}
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macro two($a:expr, $b:expr) {
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three!($a, $b);
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//~^ ERROR first final: "hello"
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//~| ERROR second final: "world"
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//~| ERROR first final: "yay"
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//~| ERROR second final: "rust"
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}
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// forwarding tokens directly doesn't create a new source chain
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macro three($($tokens:tt)*) {
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four!($($tokens)*);
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}
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macro four($($tokens:tt)*) {
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parent_source_spans!($($tokens)*);
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//~^ ERROR cannot find value `ok` in this scope
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//~| ERROR cannot find value `ok` in this scope
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//~| ERROR cannot find value `ok` in this scope
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}
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fn main() {
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one!("hello", "world");
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//~^ ERROR first grandparent: "hello"
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//~| ERROR second grandparent: "world"
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//~| ERROR first source: "hello"
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//~| ERROR second source: "world"
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two!("yay", "rust");
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//~^ ERROR first parent: "yay"
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//~| ERROR second parent: "rust"
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//~| ERROR first source: "yay"
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//~| ERROR second source: "rust"
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three!("hip", "hop");
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//~^ ERROR first final: "hip"
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//~| ERROR second final: "hop"
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//~| ERROR first source: "hip"
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//~| ERROR second source: "hop"
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}
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