bjoernager/rust
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Add INVALID_CRATE CrateNum constant.

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Michael Woerister 2017-05-09 12:46:43 +02:00
parent 6a5e2a5a9e
commit 115602b1be
2 changed files with 7 additions and 2 deletions
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5
src/librustc/hir/def_id.rs
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@ -36,7 +36,10 @@ pub const LOCAL_CRATE: CrateNum = CrateNum(0);
/// Virtual crate for builtin macros /// Virtual crate for builtin macros
// FIXME(jseyfried): this is also used for custom derives until proc-macro crates get `CrateNum`s. // FIXME(jseyfried): this is also used for custom derives until proc-macro crates get `CrateNum`s.
pub const BUILTIN_MACROS_CRATE: CrateNum = CrateNum(!0); pub const BUILTIN_MACROS_CRATE: CrateNum = CrateNum(u32::MAX);
/// A CrateNum value that indicates that something is wrong.
pub const INVALID_CRATE: CrateNum = CrateNum(u32::MAX - 1);
impl CrateNum { impl CrateNum {
pub fn new(x: usize) -> CrateNum { pub fn new(x: usize) -> CrateNum {

4
src/libsyntax_pos/lib.rs
View file

@ -494,7 +494,9 @@ impl Decodable for FileMap {
name: name, name: name,
name_was_remapped: name_was_remapped, name_was_remapped: name_was_remapped,
// `crate_of_origin` has to be set by the importer. // `crate_of_origin` has to be set by the importer.
crate_of_origin: 0xEFFF_FFFF, // This value matches up with rustc::hir::def_id::INVALID_CRATE.
// That constant is not available here unfortunately :(
crate_of_origin: ::std::u32::MAX - 1,
start_pos: start_pos, start_pos: start_pos,
end_pos: end_pos, end_pos: end_pos,
src: None, src: None,