Allow configuring project-wide page width using a surrounding analysis_options.yaml file #1571
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This can find, read, and merge them. It handles `include` inside the file. It works using an abstraction over the file system so that (in theory at least), this code could be harvested and made reusable by other tools that need to work with analysis_options.yaml files but don't want to work directly with files on disk. It also includes an implementation of that abstraction using dart:io. Right now, this is all just private inside dart_style, but is organized so that it would be easy to pull out into a separate package later if we want.
It was getting pretty huge. I didn't want to stuff more tests in there for CLI integration of analysis_options, so splitting it up into smaller files first. There are no meaningful changes here, just moving code around.
When formatting from the CLI using files or stdin with a --stdin-name option, looks in the surrounding directories for an analysis_options.yaml file. If found and the file specifies a formatter page width, uses that. Handles includes and merging as well. Doesn't handle "package:" includes yet.
lrhn
reviewed
Oct 4, 2024
lrhn
reviewed
Oct 4, 2024
lrhn
reviewed
Oct 4, 2024
natebosch
approved these changes
Oct 4, 2024
# Conflicts: # lib/src/language_version_cache.dart
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When using the
dart formatCLI (and not the library API), if the user doesn't specify a page width using--line-length, then the formatter will walk the directories surrounding each formatted file looking for ananalysis_options.yamlfile. If one is found, then it looks for a configured page width like:If found, then the file is formatted at that page width. If any sort of failure occurs, the default page width is used instead.
This is hidden behind the "tall-style" experiment flag and the intent is to ship this when the rest of the new tall style ships.
This is a fairly large change. To try to make it easier to review, I broke it into a series of hopefully more digestible commits. You might want to review those separately.
Fix #833.
cc @mit-mit