Crate salsa_macro_rules

This crate defines various macro_rules macros used as part of Salsa’s internal plumbing. These macros are re-exported under salsa::plumbing``. The procedural macros emit calls to these macro_rules` macros after doing error checking.

Using macro_rules macro definitions is generally more ergonomic and also permits true hygiene for local variables (sadly not items).

Currently the only way to have a macro that is re-exported from a submodule is to use multiple crates, hence the existence of this crate.

Macros

macro_if

maybe_backdate

Conditionally update field value and backdate revisions

maybe_clone

Generate either field_ref_expr or a clone of that expr.

maybe_cloned_ty

maybe_default

Generate either field_ref_expr or field_ty::default

maybe_default_tt

setup_accumulator_impl

Macro for setting up a function that must intern its arguments.

setup_input_struct

Macro for setting up a function that must intern its arguments.

setup_interned_struct

Macro for setting up a function that must intern its arguments.

setup_method_body

setup_tracked_fn

Macro for setting up a function that must intern its arguments.

setup_tracked_struct

Macro for setting up a function that must intern its arguments.

unexpected_cycle_recovery