Module syntax_pos::hygiene

Machinery for hygienic macros, inspired by the MTWT[1] paper.

[1] Matthew Flatt, Ryan Culpepper, David Darais, and Robert Bruce Findler. 2012. Macros that work together: Compile-time bindings, partial expansion, and definition contexts. J. Funct. Program. 22, 2 (March 2012), 181-216. DOI=10.1017/S0956796812000093 https://doi.org/10.1017/S0956796812000093

Structs

ExpnInfo	Extra information for tracking spans of macro and syntax sugar expansion
Mark	A mark is a unique ID associated with a macro expansion.
SyntaxContext	A SyntaxContext represents a chain of macro expansions (represented by marks).

Enums

CompilerDesugaringKind	The kind of compiler desugaring.
ExpnFormat	The source of expansion.
Transparency	A property of a macro expansion that determines how identifiers produced by that expansion are resolved.

Functions

clear_markings
default_edition
set_default_edition