returns true
if expr contains match expr desugared from try
Checks if the given expression contains an unsafe block
Calls the given function once for each expression contained. This does not enter any bodies or
nested items.
Calls the given function once for each expression contained. This will enter bodies, but not
nested items.
Runs the given function for each path expression referencing the given local which occur after
the given expression.
Runs the given function for each path expression referencing the given local which occur after
the given expression.
Runs the given function for each sub-expression producing the final value consumed by the parent
of the give expression.
Checks if the given expression is a constant.
Checks if the given expression performs an unsafe operation outside of an unsafe block.
Checks if the given local is used.
Checks if the given resolved path is used in the given body.