Module trace_error 

Stack-trace frame resolution output contracts (fallow trace-error). Stack-trace frame resolution contract for fallow trace-error.

The verb answers one narrow question: for each frame of a runtime stack trace, which definitions in the analysed project does that frame’s identifier name? It is deliberately easy to overclaim here, so the wire shape is built so that it cannot:

• a frame that matches several definitions reports ambiguous and lists every candidate, instead of picking one and calling it the answer;
• a frame that matches nothing reports not_found instead of being dropped;
• a frame that matches one definition but whose own line sits at a different declaration carries line_mismatch, because the look-up asks about the identifier and not about the line;
• a frame the project graph was never asked about (a dependency frame, a runtime-internal frame, a generated bundle, or a frame carrying no identifier to look up) reports not_attempted rather than borrowing not_found’s meaning;
• every frame read from the input appears in frames, in input order, and ErrorTraceCounts publishes the per-outcome totals, so a caller can see exactly how much of its trace went unanswered.

No source-map resolution is performed. A frame pointing into a build artifact is reported as such, because a stale map rebinds silently to the wrong line and a wrong line is worse than an honest refusal.

Structs

ErrorTrace

Result of resolving a runtime stack trace against the project graph.

ErrorTraceCandidate

One definition a frame’s identifier could name.

ErrorTraceCounts

Per-outcome totals for an ErrorTrace.

ErrorTraceFrame

One frame read from the input stack trace.

Enums

ErrorTraceSchemaVersion

Wire-version discriminator for ErrorTrace. Independent from the global SchemaVersion and from the other trace payloads, like crate::trace::ImportPathTraceSchemaVersion. Serializes as a string const so JSON consumers can switch on it.

FrameOrigin

Where a frame’s source location sits relative to the analysed project.

FrameResolution

What the project graph could say about a frame’s identifier.