4c60a0ea5b
Overhaul `MacArgs` Motivation: - Clarify some code that I found hard to understand. - Eliminate one use of three places where `TokenKind::Interpolated` values are created. r? `@petrochenkov`
The rustc_ast crate contains those things concerned purely with syntax
– that is, the AST ("abstract syntax tree"), along with some definitions for tokens and token streams, data structures/traits for mutating ASTs, and shared definitions for other AST-related parts of the compiler (like the lexer and macro-expansion).
For more information about how these things work in rustc, see the rustc dev guide: