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Documentation comments shouldn't affect the diagnostic derive in any
way, but explicit support has to be added for ignoring the `doc`
attribute.
Signed-off-by: David Wood <david.wood@huawei.com>
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Following the approach taken in earlier commits to separate formatting
initialization from use in the subdiagnostic derive, simplify the
diagnostic derive by removing the field-ordering logic that previously
solved this problem.
Signed-off-by: David Wood <david.wood@huawei.com>
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Diagnostic derives have previously had to take special care when
ordering the generated code so that fields were not used after a move.
This is unlikely for most fields because a field is either annotated
with a subdiagnostic attribute and is thus likely a `Span` and copiable,
or is a argument, in which case it is only used once by `set_arg`
anyway.
However, format strings for code in suggestions can result in fields
being used after being moved if not ordered carefully. As a result, the
derive currently puts `set_arg` calls last (just before emission), such
as:
```rust
let diag = { /* create diagnostic */ };
diag.span_suggestion_with_style(
span,
fluent::crate::slug,
format!("{}", __binding_0),
Applicability::Unknown,
SuggestionStyle::ShowAlways
);
/* + other subdiagnostic additions */
diag.set_arg("foo", __binding_0);
/* + other `set_arg` calls */
diag.emit();
```
For eager translation, this doesn't work, as the message being
translated eagerly can assume that all arguments are available - so
arguments _must_ be set first.
Format strings for suggestion code are now separated into two parts - an
initialization line that performs the formatting into a variable, and a
usage in the subdiagnostic addition.
By separating these parts, the initialization can happen before
arguments are set, preserving the desired order so that code compiles,
while still enabling arguments to be set before subdiagnostics are
added.
```rust
let diag = { /* create diagnostic */ };
let __code_0 = format!("{}", __binding_0);
/* + other formatting */
diag.set_arg("foo", __binding_0);
/* + other `set_arg` calls */
diag.span_suggestion_with_style(
span,
fluent::crate::slug,
__code_0,
Applicability::Unknown,
SuggestionStyle::ShowAlways
);
/* + other subdiagnostic additions */
diag.emit();
```
Signed-off-by: David Wood <david.wood@huawei.com>
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Add support for `eager` argument to the `subdiagnostic` attribute which
generates a call to `eager_subdiagnostic`.
Signed-off-by: David Wood <david.wood@huawei.com>
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`AddToDiagnostic::add_to_diagnostic_with` is similar to the previous
`AddToDiagnostic::add_to_diagnostic` but takes a function that can be
used by the caller to modify diagnostic messages originating from the
subdiagnostic (such as performing translation eagerly).
`add_to_diagnostic` now just calls `add_to_diagnostic_with` with an
empty closure.
Signed-off-by: David Wood <david.wood@huawei.com>
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Small tweaks to changes made in a previous PR, unrelated to eager
translation.
Signed-off-by: David Wood <david.wood@huawei.com>
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In #102306, `rustc_typeck` was renamed to `rustc_hir_analysis` but the
diagnostic resources were not renamed - which is what this commit
changes.
Signed-off-by: David Wood <david.wood@huawei.com>
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Signed-off-by: David Wood <david.wood@huawei.com>
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FIX - ambiguous Diagnostic link in docs
UPDATE - rename diagnostic_items to IntoDiagnostic and AddToDiagnostic
[Gardening] FIX - formatting via `x fmt`
FIX - rebase conflicts. NOTE: Confirm wheather or not we want to handle TargetDataLayoutErrorsWrapper this way
DELETE - unneeded allow attributes in Handler method
FIX - broken test
FIX - Rebase conflict
UPDATE - rename residual _SessionDiagnostic and fix LintDiag link
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Also renames:
- sym::AddSubdiagnostic to sym:: Subdiagnostic
- rustc_diagnostic_item = "AddSubdiagnostic" to rustc_diagnostic_item = "Subdiagnostic"
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Suggested by the team in this Zulip Topic https://rust-lang.zulipchat.com/#narrow/stream/336883-i18n/topic/.23100717.20SessionDiagnostic.20on.20Handler
Handler already has almost all the capabilities of ParseSess when it comes to diagnostic emission, in this migration we only needed to add the ability to access source_map from the emitter in order to get a Snippet and the start_point. Not sure if this is the best way to address this gap
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This reimplements ac638c1, which had to be reverted in the previous
commit because it contains a rebase accident that itself reverted
significant unrelated changes to SessionSubdiagnostic.
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This reverts parts of commit ac638c1f5fca36484506415319ab254ad522a692.
During rebase, this commit accidentally reverted unrelated changes to
the subdiagnostic derive (those allowing multipart_suggestions to be
derived). This commit reverts all changes to the subdiagnostic code made
in ac638c1f5fc, the next commit will reintroduce the actually intended
changes.
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Use more `into_iter` rather than `drain(..)`
Clearer semantic.
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fixes `SessionSubdiagnostic` to accept multiple attributes
emitting list of fluent message remains unresolved
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The macro warn_ was named like that because it the
keyword warn is a built-in attribute and at the time
this macro was created the word 'warning' was also
taken.
However it is no longer the case and we can rename
warn_ to warning.
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fluent: mandate slug names to be prefixed by crate name
This is currently only convention, but not actively checked for.
Additionally, improve error messages to highlight the path of the offending fluent file rather than the identifier preceding it.
This will conflict with #100671, so I'll leave it as draft until that's merged.
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Example error before:
error: name `generic_does_not_live_long_enough` does not start with the crate name
--> compiler/rustc_error_messages/src/lib.rs:33:17
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33 | borrowck => "../locales/en-US/borrowck.ftl",
| ^^^^^^^^
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= help: prepend `borrowck_` to the slug name: `borrowck_generic_does_not_live_long_enough`
after:
error: name `generic_does_not_live_long_enough` does not start with the crate name
--> compiler/rustc_error_messages/src/lib.rs:33:17
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33 | borrowck => "../locales/en-US/borrowck.ftl",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: prepend `borrowck_` to the slug name: `borrowck_generic_does_not_live_long_enough`
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Co-authored-by: RanolP <public.ranolp@gmail.com>
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Deriving SessionDiagnostic on a type no longer forces that diagnostic to
be one of warning, error, or fatal. The level is instead decided when
the struct is passed to the respective Handler::emit_*() method.
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For the most part, the macro actually worked with _ slugs, but the prefix_something -> prefix::something
conversion was not implemented.
We don't want to accept - slugs for consistency reasons.
We thus error if a name is found with - inside.
This ensures a consistent style.
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Both diagnostic and subdiagnostic derives were missing the ability to
add warnings to diagnostics - this is made more difficult by the `warn`
attribute already existing, so this name being unavailable for the
derives to use. `#[warn_]` is used instead, which requires
special-casing so that `{span_,}warn` is called instead of
`{span_,}warn_`.
Signed-off-by: David Wood <david.wood@huawei.com>
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Add support for `MultiSpan` with any of the attributes that work on a
`Span` - requires that diagnostic logic generated for these attributes
are emitted in the by-move block rather than the by-ref block that they
would normally have been generated in.
Signed-off-by: David Wood <david.wood@huawei.com>
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`SessionDiagnostic` isn't suitable for use on lints as whether or not it
creates an error or a warning is decided at compile-time by the macro,
whereas lints decide this at runtime based on the location of the lint
being reported (as it will depend on the user's `allow`/`deny`
attributes, etc). Re-using most of the machinery for
`SessionDiagnostic`, this macro introduces a `LintDiagnostic` derive
which implements a `DecorateLint` trait, taking a
`LintDiagnosticBuilder` and adding to the lint according to the
diagnostic struct.
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`sess` field of `SessionDiagnosticDeriveBuilder` is never actually used
in the builder's member functions, so it doesn't need to be a field.
Signed-off-by: David Wood <david.wood@huawei.com>
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Move the logic for building a field mapping (which is used by the
building of format strings in `suggestion` annotations) into a helper
function.
Signed-off-by: David Wood <david.wood@huawei.com>
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