Expand description

Contains ParseSess which holds state living beyond what one Parser might. It also serves as an input to the parser itself.

Structs

Collected spans during parsing for places where a certain feature was used and should be feature gated accordingly in check_crate.

Info about a parsing session.

Functions

Adds the diagnostics for a feature to an existing error.

Adds the diagnostics for a feature to an existing error.

Construct a diagnostic for a language feature error due to the given span. The feature’s Symbol is the one you used in active.rs and rustc_span::symbols.

Construct a diagnostic for a feature gate error.

Type Definitions

The set of keys (and, optionally, values) that define the compilation environment of the crate, used to drive conditional compilation.