Module spans

Modules

from_mir 🔒

Structs

Covspan 🔒

Functions

compare_spans 🔒

Compares two spans in (lo ascending, hi descending) order.

discard_spans_overlapping_holes 🔒

Discard all covspans that overlap a hole.

extract_refined_covspans 🔒

remove_unwanted_expansion_spans 🔒

Macros that expand into branches (e.g. assert!, trace!) tend to generate multiple condition/consequent blocks that have the span of the whole macro invocation, which is unhelpful. Keeping only the first such span seems to give better mappings, so remove the others.

remove_unwanted_overlapping_spans 🔒

Takes a list of sorted spans extracted from MIR, and “refines” those spans by removing spans that overlap in unwanted ways.

shrink_visible_macro_spans 🔒

When a span corresponds to a macro invocation that is visible from the function body, truncate it to just the macro name plus !. This seems to give better results for code that uses macros.