[Feature Request] move-compiler needs a general way to select classes of warnings shown

[brmataptos]

🚀 Feature Request

We have one flag to suppress one kind of warnings: "skip_attribute_checks", defined in Flags in aptos-core/third_party/move/move-compiler/src/shared/mod.rs, but as I consider adding a flag for deprecation warnings this seems not very scalable.

Another option for warnings would be a new mechanism that is interpreted in the diagnostics module in aptos-core/third_party/move/move-compiler/src/diagnostics/mod.rs.

I note that whatever we use should also work with compiler_v2., which is using the move-model mechanism, implemented in GlobalEnv in aptos-core/third_party/move/move-model/src/model.rs; for example, see the method GlobalEnv::report_diag_with_filter().

Motivation

Deciding which warnings to show should be cleaner in the code.

Pitch

No clear ideas yet.

[wrwg]

I think we should really go with the standard solution here you find in many other languages — attributes which control other attributes. Like an attribute to declare an attribute, an attribute to suppress a warning, etc. Lets do this right for v2 and for v1 only absolutely required minimum.

On Sat, Oct 7, 2023 at 4:22 PM Brian R. Murphy @.***> wrote:

🚀 Feature Request

We have one flag to suppress one kind of warnings: "skip_attribute_checks", defined in Flags in aptos-core/third_party/move/move-compiler/src/shared/mod.rs, but as I consider adding a flag for deprecation warnings this seems not very scalable.

Another option for warnings would be a new mechanism that is interpreted in the diagnostics module in aptos-core/third_party/move/move-compiler/src/diagnostics/mod.rs.

I note that whatever we use should also work with compiler_v2., which is using the move-model mechanism, implemented in GlobalEnv in aptos-core/third_party/move/move-model/src/model.rs; for example, see the method GlobalEnv::report_diag_with_filter(). Motivation

Deciding which warnings to show should be cleaner in the code. Pitch

No clear ideas yet.

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[brmataptos]

We have several situations where V2 can generate a lot of warnings on a line. We should do this for V2. maybe attributes.