| commit | 706d75b172dba318a9fecc106fa15b6d01eb21c1 | [log] [tgz] |
|---|---|---|
| author | Googler <noreply@google.com> | Wed Sep 18 10:09:07 2019 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed Sep 18 10:10:35 2019 -0700 |
| tree | 81bfa3e6d31b2a14f377e0ef48c813b4e37b6d04 | |
| parent | b1e1aeb7962a846abef9f50362a04ad5145efcda [diff] |
bazel packages: remove attribute locations Currently, along with the value of each rule attribute, Blaze records the optional source location of the identifier of the named argument that provides the attribute's value, such as 'srcs' in cc_binary(..., srcs=[...]). This helps blaze emit more precise errors for problems in a particular attribute, especially for rule instantiation calls that span many lines. However, this feature requires a power of introspection not found in most programming languages: the ability to walk up the call stack to find the caller and then inspect its syntax tree. As specified, the Starlark calling convention provides the callee with only the thread, the values of the positional arguments, and the names and values of the named arguments; it does not provide source syntax. The source syntax parameter is an obstacle to upcoming evaluator optimizations, which will compile syntax trees to a more compact, efficient, and easily serialized executable representation. Therefore, this change removes the feature. All attribute errors now report the location of the rule as a whole. On the plus side, this change should reduce memory usage of loaded packages. Follow-up changes will remove the FuncallExpression parameter from the Starlark function call API once all uses have been eliminated. PiperOrigin-RevId: 269832751
{Fast, Correct} - Choose two
Build and test software of any size, quickly and reliably.
Speed up your builds and tests: Bazel only rebuilds what is necessary. With advanced local and distributed caching, optimized dependency analysis and parallel execution, you get fast and incremental builds.
One tool, multiple languages: Build and test Java, C++, Android, iOS, Go, and a wide variety of other language platforms. Bazel runs on Windows, macOS, and Linux.
Scalable: Bazel helps you scale your organization, codebase, and continuous integration solution. It handles codebases of any size, in multiple repositories or a huge monorepo.
Extensible to your needs: Easily add support for new languages and platforms with Bazel's familiar extension language. Share and re-use language rules written by the growing Bazel community.
Follow our tutorials:
See CONTRIBUTING.md
Bazel is released in ‘Beta’. See the product roadmap to learn about the path toward a stable 1.0 release.