Benedikt Meurer 40109c0d50 [sourcemaps] Make SourceMap#reverseMapTextRanges() yield correct ranges. ...

Prior to this change, SourceMap#reverseMapTextRange() would try to map a
range in a source mapped entity by computing the closest points in the
reverse mapping for the start and end position respectively. This does
work for most cases, but does not properly support a lot of the more
interesting cases. Most importantly it does not support the common case
where source maps have "holes" for source entities, or map the same line
of source code to multiple places in the generated code (inlining / tail
duplication as done by JSCompiler for example). The previous method also
did not properly support the case where an entry intersects with the
range, but the start position of the source map entry lies before the
range start position.

This CL changes the method to return a sequence of text ranges, and
addresses the more interesting cases. It also adds relevant test
coverage.

Bug: chromium:1409365
Change-Id: I40f268d1c7ea3c3284bf3f27d19578204ac821d9
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/4196920
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>

2023-01-27 11:35:53 +00:00

..

BUILD.gn

[Performance] Translate function names in the timeline flame chart

2022-10-19 11:57:43 +00:00

NamesResolver.ts

[sourcemaps] Make SourceMap#reverseMapTextRanges() yield correct ranges.

2023-01-27 11:35:53 +00:00

source_map_scopes.ts

Move scope names resolver to models

2022-02-15 21:40:01 +00:00