The compiler actually doesn't need any functional changes for this: Sema
does reification based on the tag indices of `std.builtin.Type` already!
So, no zig1.wasm update is necessary.
This change is necessary to disallow name clashes between fields and
decls on a type, which is a prerequisite of #9938.
This is another minor change but still makes a visual difference and will reduce the amount you have to scroll in your terminal by a little bit.
Reasoning:
1. The `for (0..src.data.reference_trace_len)` loop will run at least once due to the `src.data.reference_trace_len > 0` check above.
2. In all 3 branches of the `if` in that `for` it will print something.
3. The 3 strings of all of those prints already end in `\n`.
Therefore, the extra `try stderr.writeByte('\n');` is unnecessary.
Most of this migration was performed automatically with `zig fmt`. There
were a few exceptions which I had to manually fix:
* `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten
* `@truncate`'s fixup is incorrect for vectors
* Test cases are not formatted, and their error locations change
Also get rid of the TTY wrapper struct, which was exlusively used as a
namespace - this is done by the tty.zig root struct now.
detectTTYConfig has been renamed to just detectConfig, which is enough
given the new namespace. Additionally, a doc comment had been added.
* std.zig.ErrorBundle: support rendering options for whether to include
the reference trace, whether to include the source line, and TTY
configuration.
* build runner: don't print progress in dumb terminals
* std.Build.CompileStep:
- add a way to expect compilation errors via the new `expect_errors`
field. This is an advanced setting that can change the intent of
the CompileStep. If this slice has nonzero length, it means that
the CompileStep exists to check for compile errors and return
*success* if they match, and failure otherwise.
- remove the object format parameter from `checkObject`. The object
format is known based on the CompileStep's target.
- Avoid passing -L and -I flags for nonexistent directories within
search_prefixes. This prevents a warning, that should probably be
upgraded to an error in Zig's CLI parsing code, when the linker
sees an -L directory that does not exist.
* std.Build.Step:
- When spawning the zig compiler process, takes advantage of the new
`std.Progress.Node.setName` API to avoid ticking up a meaningless
number at every progress update.
Introduces std.zig.ErrorBundle which is a trivially serializeable set
of compilation errors. This is in the standard library so that both
the compiler and the build runner can use it. The idea is they will
use it to communicate compilation errors over a binary protocol.
The binary encoding of ErrorBundle is a bit problematic - I got a little
too aggressive with compaction. I need to change it in a follow-up
commit to use some indirection in the error message list, otherwise
iteration is too unergonomic. In fact it's so problematic right now that
the logic getAllErrorsAlloc() actually fails to produce a viable
ErrorBundle because it puts SourceLocation data in between the root
level ErrorMessage data.
This commit has a simplification - redundant logic for rendering AST
errors to stderr has been removed in favor of moving the logic for
lowering AST errors into AstGen. So even if we get parse errors, the
errors will get lowered into ZIR before being reported. I believe this
will be useful when working on --autofix. Either way, some redundant
brittle logic was happily deleted.
In Compilation, updateSubCompilation() is improved to properly perform
error reporting when a sub-compilation object fails. It no longer dumps
directly to stderr; instead it populates an ErrorBundle object, which
gets added to the parent one during getAllErrorsAlloc().
In package fetching code, instead of dumping directly to stderr, it now
populates an ErrorBundle object, and gets properly reported at the CLI
layer of abstraction.
