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Loading the fallback bundle in compilation sessions that won't go on to
emit any errors unnecessarily degrades compile time performance, so
lazily create the Fluent bundle when it is first required.
Signed-off-by: David Wood <david.wood@huawei.com>
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Instead of checking only the user provided sysroot or the default (when
no sysroot is provided), search user provided sysroot and then check
default sysroots for locale requested by the user.
Signed-off-by: David Wood <david.wood@huawei.com>
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Conditional on the parallel compiler being enabled, use a different
`IntlLangMemoizer` which supports being sent between threads in
`FluentBundle`.
Signed-off-by: David Wood <david.wood@huawei.com>
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`FluentId` is the type alias that is used everywhere else so it should
be used here too so that this doesn't need updated if the alias changes.
Signed-off-by: David Wood <david.wood@huawei.com>
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Add an option for enabling and disabling Fluent's directionality
isolation markers in output. Disabled by default as these can render in
some terminals and applications.
Signed-off-by: David Wood <david.wood@huawei.com>
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Add some links to the Fluent documentation to
`DiagnosticMessage::FluentIdentifier` which explain what a Fluent
message and attribute are.
Signed-off-by: David Wood <david.wood@huawei.com>
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If the user requests a diagnostic locale of "en-US" then it doesn't make
sense to try and load that from the `$sysroot` because it is just the
default built-in locale.
Signed-off-by: David Wood <david.wood@huawei.com>
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Fluent diagnostics can insert directionality isolation markers around
interpolated variables indicating that there may be a shift from
right-to-left to left-to-right text (or vice-versa). These are disabled
because they are sometimes visible in the error output, but may be worth
investigating in future (for example: if type names are left-to-right
and the surrounding diagnostic messages are right-to-left, then these
might be helpful).
Signed-off-by: David Wood <david.wood@huawei.com>
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Extend loading of Fluent bundles so that bundles can be loaded from the
sysroot based on the language requested by the user, or using a nightly
flag.
Sysroot bundles are loaded from `$sysroot/share/locale/$locale/*.ftl`.
Signed-off-by: David Wood <david.wood@huawei.com>
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This commit updates the signatures of all diagnostic functions to accept
types that can be converted into a `DiagnosticMessage`. This enables
existing diagnostic calls to continue to work as before and Fluent
identifiers to be provided. The `SessionDiagnostic` derive just
generates normal diagnostic calls, so these APIs had to be modified to
accept Fluent identifiers.
In addition, loading of the "fallback" Fluent bundle, which contains the
built-in English messages, has been implemented.
Each diagnostic now has "arguments" which correspond to variables in the
Fluent messages (necessary to render a Fluent message) but no API for
adding arguments has been added yet. Therefore, diagnostics (that do not
require interpolation) can be converted to use Fluent identifiers and
will be output as before.
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`MultiSpan` contains labels, which are more complicated with the
introduction of diagnostic translation and will use types from
`rustc_errors` - however, `rustc_errors` depends on `rustc_span` so
`rustc_span` cannot use types like `DiagnosticMessage` without
dependency cycles. Introduce a new `rustc_error_messages` crate that can
contain `DiagnosticMessage` and `MultiSpan`.
Signed-off-by: David Wood <david.wood@huawei.com>
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