Toolchain development

To build and test the Carbon toolchain locally, run the autoupdate_testdata.py script to refresh test data, then execute a targeted build using Bazel to validate your changes and ensure they pass existing tests.

The Carbon toolchain architecture consists of several core components including base, check, lex, parse, lower, and sem_ir, which guide engineers through the structure for iterative development and debugging.

To debug the Carbon parser and SemIR generation, navigate the toolchain structure to isolate the parse and sem_ir components, then run targeted Bazel testing workflows to identify and resolve common pitfalls during iterative development.

You need to run the autoupdate_testdata.py script before executing a targeted build to refresh and maintain test data, ensuring your local testing environment accurately reflects the current state of the Carbon toolchain.

Yes, the Carbon toolchain build system works with Bazel, supporting iterative development workflows by allowing contributors to run targeted builds and tests for specific components like the parser and SemIR generation.

A Carbon toolchain build may fail after updating parser test data if the changes are not validated against existing tests, requiring you to run the autoupdate_testdata.py script and execute targeted Bazel builds to check for common pitfalls.