diff options
Diffstat (limited to 'tvix/eval')
| -rw-r--r-- | tvix/eval/src/chunk.rs | 9 | ||||
| -rw-r--r-- | tvix/eval/src/disassembler.rs | 7 |
2 files changed, 12 insertions, 4 deletions
diff --git a/tvix/eval/src/chunk.rs b/tvix/eval/src/chunk.rs index defa409f18d6..c89e6ef84810 100644 --- a/tvix/eval/src/chunk.rs +++ b/tvix/eval/src/chunk.rs @@ -77,4 +77,13 @@ impl Chunk { panic!("compiler error: chunk missing span for offset {}", offset.0); } + + /// Retrieve the line from which the instruction at `offset` was + /// compiled. Only available when the chunk carries a codemap, + /// i.e. when the disassembler is enabled. + #[cfg(feature = "disassembler")] + pub fn get_line(&self, offset: CodeIdx) -> usize { + let span = self.get_span(offset); + self.codemap.look_up_span(span).begin.line + 1 + } } diff --git a/tvix/eval/src/disassembler.rs b/tvix/eval/src/disassembler.rs index b089797f8ab1..7948977e4b55 100644 --- a/tvix/eval/src/disassembler.rs +++ b/tvix/eval/src/disassembler.rs @@ -44,13 +44,12 @@ impl Drop for Tracer { fn disassemble_op(tw: &mut TabWriter<Stderr>, chunk: &Chunk, width: usize, offset: usize) { let _ = write!(tw, "{:0width$}\t ", offset, width = width); - let span = chunk.get_span(CodeIdx(offset)); + let line = chunk.get_line(CodeIdx(offset)); - if offset > 0 && chunk.get_span(CodeIdx(offset - 1)) == span { + if offset > 0 && chunk.get_line(CodeIdx(offset - 1)) == line { write!(tw, " |\t").unwrap(); } else { - let loc = chunk.codemap.look_up_span(span); - write!(tw, "{:4}\t", loc.begin.line + 1).unwrap(); + write!(tw, "{:4}\t", line).unwrap(); } let _ = match chunk.code[offset] { |