Module rustc_ap_rustc_ast::mut_visit [−][src]
Expand description
A MutVisitor represents an AST modification; it accepts an AST piece and
and mutates it in place. So, for instance, macro expansion is a MutVisitor
that walks over an AST and modifies it.
Note: using a MutVisitor (other than the MacroExpander MutVisitor) on
an AST before macro expansion is probably a bad idea. For instance,
a MutVisitor renaming item names in a module will miss all of those
that are created by the expansion of a macro.
Traits
Functions
Use a map-style function (FnOnce(T) -> T) to overwrite a &mut T. Useful
when using a flat_map_* or filter_map_* method within a visit_
method. Abort the program if the closure panics.
Applies the visitor to elements of interpolated nodes.