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Unify subdiagnostic attribute parsing

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This commit is contained in:
Xiretza 2022-09-14 17:19:40 +02:00
parent ae56d2a118
commit 336a72a8da
3 changed files with 360 additions and 360 deletions
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414
compiler/rustc_macros/src/diagnostics/diagnostic_builder.rs
View File

@ -1,25 +1,23 @@
#![deny(unused_must_use)]
use super::error::throw_invalid_nested_attr;
use super::utils::{SpannedOption, SubdiagnosticKind};
use crate::diagnostics::error::{
invalid_nested_attr, span_err, throw_invalid_attr, throw_invalid_nested_attr, throw_span_err,
DiagnosticDeriveError,
invalid_nested_attr, span_err, throw_invalid_attr, throw_span_err, DiagnosticDeriveError,
};
use crate::diagnostics::utils::{
report_error_if_not_applied_to_span, report_type_error, type_is_unit, type_matches_path,
Applicability, FieldInfo, FieldInnerTy, HasFieldMap, SetOnce,
FieldInfo, FieldInnerTy, HasFieldMap, SetOnce,
};
use proc_macro2::{Ident, Span, TokenStream};
use quote::{format_ident, quote};
use std::collections::HashMap;
use std::str::FromStr;
use syn::{
parse_quote, spanned::Spanned, Attribute, Field, Meta, MetaList, MetaNameValue, NestedMeta,
Path, Type,
};
use synstructure::{BindingInfo, Structure};
use super::utils::SpannedOption;
/// What kind of diagnostic is being derived - a fatal/error/warning or a lint?
#[derive(Copy, Clone, PartialEq, Eq)]
pub(crate) enum DiagnosticDeriveKind {
@ -45,7 +43,7 @@ pub(crate) struct DiagnosticDeriveBuilder {
pub slug: SpannedOption<Path>,
/// Error codes are a optional part of the struct attribute - this is only set to detect
/// multiple specifications.
pub code: SpannedOption<String>,
pub code: SpannedOption<()>,
}
impl HasFieldMap for DiagnosticDeriveBuilder {
@ -129,6 +127,30 @@ impl DiagnosticDeriveBuilder {
|| is_subdiagnostic
}
fn parse_subdiag_attribute(
&self,
attr: &Attribute,
) -> Result<(SubdiagnosticKind, Path), DiagnosticDeriveError> {
let (subdiag, slug) = SubdiagnosticKind::from_attr(attr, self)?;
if let SubdiagnosticKind::MultipartSuggestion { .. } = subdiag {
let meta = attr.parse_meta()?;
throw_invalid_attr!(attr, &meta, |diag| diag
.help("consider creating a `Subdiagnostic` instead"));
}
let slug = slug.unwrap_or_else(|| match subdiag {
SubdiagnosticKind::Label => parse_quote! { _subdiag::label },
SubdiagnosticKind::Note => parse_quote! { _subdiag::note },
SubdiagnosticKind::Help => parse_quote! { _subdiag::help },
SubdiagnosticKind::Warn => parse_quote! { _subdiag::warn },
SubdiagnosticKind::Suggestion { .. } => parse_quote! { _subdiag::suggestion },
SubdiagnosticKind::MultipartSuggestion { .. } => unreachable!(),
});
Ok((subdiag, slug))
}
/// Establishes state in the `DiagnosticDeriveBuilder` resulting from the struct
/// attributes like `#[diag(..)]`, such as the slug and error code. Generates
/// diagnostic builder calls for setting error code and creating note/help messages.
@ -137,98 +159,64 @@ impl DiagnosticDeriveBuilder {
attr: &Attribute,
) -> Result<TokenStream, DiagnosticDeriveError> {
let diag = &self.diag;
let span = attr.span().unwrap();
let name = attr.path.segments.last().unwrap().ident.to_string();
let name = name.as_str();
let meta = attr.parse_meta()?;
let is_diag = name == "diag";
if name == "diag" {
let Meta::List(MetaList { ref nested, .. }) = meta else {
throw_invalid_attr!(
attr,
&meta
);
};
let nested = match meta {
// Most attributes are lists, like `#[diag(..)]` for most cases or
// `#[help(..)]`/`#[note(..)]` when the user is specifying a alternative slug.
Meta::List(MetaList { ref nested, .. }) => nested,
// Subdiagnostics without spans can be applied to the type too, and these are just
// paths: `#[help]`, `#[note]` and `#[warning]`
Meta::Path(_) if !is_diag => {
let fn_name = if name == "warning" {
Ident::new("warn", attr.span())
} else {
Ident::new(name, attr.span())
};
return Ok(self.add_subdiagnostic(&fn_name, parse_quote! { _subdiag::#fn_name }));
}
_ => throw_invalid_attr!(attr, &meta),
};
let mut nested_iter = nested.into_iter().peekable();
// Check the kind before doing any further processing so that there aren't misleading
// "no kind specified" errors if there are failures later.
match name {
"error" | "lint" => throw_invalid_attr!(attr, &meta, |diag| {
diag.help("`error` and `lint` have been replaced by `diag`")
}),
"warn_" => throw_invalid_attr!(attr, &meta, |diag| {
diag.help("`warn_` have been replaced by `warning`")
}),
"diag" | "help" | "note" | "warning" => (),
_ => throw_invalid_attr!(attr, &meta, |diag| {
diag.help("only `diag`, `help`, `note` and `warning` are valid attributes")
}),
}
match nested_iter.peek() {
Some(NestedMeta::Meta(Meta::Path(slug))) => {
self.slug.set_once(slug.clone(), slug.span().unwrap());
nested_iter.next();
}
Some(NestedMeta::Meta(Meta::NameValue { .. })) => {}
Some(nested_attr) => throw_invalid_nested_attr!(attr, &nested_attr, |diag| diag
.help("a diagnostic slug is required as the first argument")),
None => throw_invalid_attr!(attr, &meta, |diag| diag
.help("a diagnostic slug is required as the first argument")),
};
// First nested element should always be the path, e.g. `#[diag(typeck::invalid)]` or
// `#[help(typeck::another_help)]`.
let mut nested_iter = nested.into_iter();
if let Some(nested_attr) = nested_iter.next() {
// Report an error if there are any other list items after the path.
if !is_diag && nested_iter.next().is_some() {
throw_invalid_nested_attr!(attr, &nested_attr, |diag| {
diag.help(
"`help`, `note` and `warning` struct attributes can only have one argument",
)
});
}
match nested_attr {
NestedMeta::Meta(Meta::Path(path)) => {
if is_diag {
self.slug.set_once(path.clone(), span);
} else {
let fn_name = proc_macro2::Ident::new(name, attr.span());
return Ok(quote! { #diag.#fn_name(rustc_errors::fluent::#path); });
// Remaining attributes are optional, only `code = ".."` at the moment.
let mut tokens = TokenStream::new();
for nested_attr in nested_iter {
let (value, path) = match nested_attr {
NestedMeta::Meta(Meta::NameValue(MetaNameValue {
lit: syn::Lit::Str(value),
path,
..
})) => (value, path),
NestedMeta::Meta(Meta::Path(_)) => {
invalid_nested_attr(attr, &nested_attr)
.help("diagnostic slug must be the first argument")
.emit();
continue;
}
}
NestedMeta::Meta(meta @ Meta::NameValue(_))
if is_diag && meta.path().segments.last().unwrap().ident == "code" =>
{
// don't error for valid follow-up attributes
}
nested_attr => throw_invalid_nested_attr!(attr, &nested_attr, |diag| {
diag.help("first argument of the attribute should be the diagnostic slug")
}),
};
}
_ => {
invalid_nested_attr(attr, &nested_attr).emit();
continue;
}
};
// Remaining attributes are optional, only `code = ".."` at the moment.
let mut tokens = Vec::new();
for nested_attr in nested_iter {
let meta = match nested_attr {
syn::NestedMeta::Meta(meta) => meta,
_ => throw_invalid_nested_attr!(attr, &nested_attr),
};
let path = meta.path();
let nested_name = path.segments.last().unwrap().ident.to_string();
// Struct attributes are only allowed to be applied once, and the diagnostic
// changes will be set in the initialisation code.
if let Meta::NameValue(MetaNameValue { lit: syn::Lit::Str(s), .. }) = &meta {
let span = s.span().unwrap();
let nested_name = path.segments.last().unwrap().ident.to_string();
// Struct attributes are only allowed to be applied once, and the diagnostic
// changes will be set in the initialisation code.
let span = value.span().unwrap();
match nested_name.as_str() {
"code" => {
self.code.set_once(s.value(), span);
let code = &self.code.value_ref();
tokens.push(quote! {
self.code.set_once((), span);
let code = value.value();
tokens.extend(quote! {
#diag.code(rustc_errors::DiagnosticId::Error(#code.to_string()));
});
}
@ -236,12 +224,22 @@ impl DiagnosticDeriveBuilder {
.help("only `code` is a valid nested attributes following the slug")
.emit(),
}
} else {
invalid_nested_attr(attr, &nested_attr).emit()
}
return Ok(tokens);
}
Ok(tokens.into_iter().collect())
let (subdiag, slug) = self.parse_subdiag_attribute(attr)?;
let fn_ident = format_ident!("{}", subdiag);
match subdiag {
SubdiagnosticKind::Note | SubdiagnosticKind::Help | SubdiagnosticKind::Warn => {
Ok(self.add_subdiagnostic(&fn_ident, slug))
}
SubdiagnosticKind::Label | SubdiagnosticKind::Suggestion { .. } => {
throw_invalid_attr!(attr, &meta, |diag| diag
.help("`#[label]` and `#[suggestion]` can only be applied to fields"));
}
SubdiagnosticKind::MultipartSuggestion { .. } => unreachable!(),
}
}
fn generate_field_attrs_code(&mut self, binding_info: &BindingInfo<'_>) -> TokenStream {
@ -305,217 +303,83 @@ impl DiagnosticDeriveBuilder {
info: FieldInfo<'_>,
binding: TokenStream,
) -> Result<TokenStream, DiagnosticDeriveError> {
let meta = attr.parse_meta()?;
match meta {
Meta::Path(_) => self.generate_inner_field_code_path(attr, info, binding),
Meta::List(MetaList { .. }) => self.generate_inner_field_code_list(attr, info, binding),
_ => throw_invalid_attr!(attr, &meta),
}
}
fn generate_inner_field_code_path(
&mut self,
attr: &Attribute,
info: FieldInfo<'_>,
binding: TokenStream,
) -> Result<TokenStream, DiagnosticDeriveError> {
assert!(matches!(attr.parse_meta()?, Meta::Path(_)));
let diag = &self.diag;
let meta = attr.parse_meta()?;
let ident = &attr.path.segments.last().unwrap().ident;
let name = ident.to_string();
let name = name.as_str();
match name {
"skip_arg" => {
// Don't need to do anything - by virtue of the attribute existing, the
// `set_arg` call will not be generated.
Ok(quote! {})
}
"primary_span" => {
match self.kind {
if let Meta::Path(_) = meta {
let ident = &attr.path.segments.last().unwrap().ident;
let name = ident.to_string();
let name = name.as_str();
match name {
"skip_arg" => {
// Don't need to do anything - by virtue of the attribute existing, the
// `set_arg` call will not be generated.
return Ok(quote! {});
}
"primary_span" => match self.kind {
DiagnosticDeriveKind::Diagnostic => {
report_error_if_not_applied_to_span(attr, &info)?;
Ok(quote! {
return Ok(quote! {
#diag.set_span(#binding);
})
});
}
DiagnosticDeriveKind::LintDiagnostic => {
throw_invalid_attr!(attr, &meta, |diag| {
diag.help("the `primary_span` field attribute is not valid for lint diagnostics")
})
}
}
},
"subdiagnostic" => return Ok(quote! { #diag.subdiagnostic(#binding); }),
_ => {}
}
"label" => {
}
let (subdiag, slug) = self.parse_subdiag_attribute(attr)?;
let fn_ident = format_ident!("{}", subdiag);
match subdiag {
SubdiagnosticKind::Label => {
report_error_if_not_applied_to_span(attr, &info)?;
Ok(self.add_spanned_subdiagnostic(binding, ident, parse_quote! { _subdiag::label }))
Ok(self.add_spanned_subdiagnostic(binding, &fn_ident, slug))
}
"note" | "help" | "warning" => {
let warn_ident = Ident::new("warn", Span::call_site());
let (ident, path) = match name {
"note" => (ident, parse_quote! { _subdiag::note }),
"help" => (ident, parse_quote! { _subdiag::help }),
"warning" => (&warn_ident, parse_quote! { _subdiag::warn }),
_ => unreachable!(),
};
SubdiagnosticKind::Note | SubdiagnosticKind::Help | SubdiagnosticKind::Warn => {
if type_matches_path(&info.ty, &["rustc_span", "Span"]) {
Ok(self.add_spanned_subdiagnostic(binding, ident, path))
Ok(self.add_spanned_subdiagnostic(binding, &fn_ident, slug))
} else if type_is_unit(&info.ty) {
Ok(self.add_subdiagnostic(ident, path))
Ok(self.add_subdiagnostic(&fn_ident, slug))
} else {
report_type_error(attr, "`Span` or `()`")?
}
}
"subdiagnostic" => Ok(quote! { #diag.subdiagnostic(#binding); }),
_ => throw_invalid_attr!(attr, &meta, |diag| {
diag.help(
"only `skip_arg`, `primary_span`, `label`, `note`, `help` and `subdiagnostic` \
are valid field attributes",
)
}),
}
}
SubdiagnosticKind::Suggestion {
suggestion_kind,
applicability: static_applicability,
code,
} => {
let (span_field, mut applicability) = self.span_and_applicability_of_ty(info)?;
fn generate_inner_field_code_list(
&mut self,
attr: &Attribute,
info: FieldInfo<'_>,
binding: TokenStream,
) -> Result<TokenStream, DiagnosticDeriveError> {
let meta = attr.parse_meta()?;
let Meta::List(MetaList { ref path, ref nested, .. }) = meta else { unreachable!() };
let ident = &attr.path.segments.last().unwrap().ident;
let name = path.segments.last().unwrap().ident.to_string();
let name = name.as_ref();
match name {
"suggestion" | "suggestion_short" | "suggestion_hidden" | "suggestion_verbose" => {
return self.generate_inner_field_code_suggestion(attr, info);
}
"label" | "help" | "note" | "warning" => (),
_ => throw_invalid_attr!(attr, &meta, |diag| {
diag.help(
"only `label`, `help`, `note`, `warn` or `suggestion{,_short,_hidden,_verbose}` are \
valid field attributes",
)
}),
}
// For `#[label(..)]`, `#[note(..)]` and `#[help(..)]`, the first nested element must be a
// path, e.g. `#[label(typeck::label)]`.
let mut nested_iter = nested.into_iter();
let msg = match nested_iter.next() {
Some(NestedMeta::Meta(Meta::Path(path))) => path.clone(),
Some(nested_attr) => throw_invalid_nested_attr!(attr, &nested_attr),
None => throw_invalid_attr!(attr, &meta),
};
// None of these attributes should have anything following the slug.
if nested_iter.next().is_some() {
throw_invalid_attr!(attr, &meta);
}
match name {
"label" => {
report_error_if_not_applied_to_span(attr, &info)?;
Ok(self.add_spanned_subdiagnostic(binding, ident, msg))
}
"note" | "help" if type_matches_path(&info.ty, &["rustc_span", "Span"]) => {
Ok(self.add_spanned_subdiagnostic(binding, ident, msg))
}
"note" | "help" if type_is_unit(&info.ty) => Ok(self.add_subdiagnostic(ident, msg)),
// `warning` must be special-cased because the attribute `warn` already has meaning and
// so isn't used, despite the diagnostic API being named `warn`.
"warning" if type_matches_path(&info.ty, &["rustc_span", "Span"]) => Ok(self
.add_spanned_subdiagnostic(binding, &Ident::new("warn", Span::call_site()), msg)),
"warning" if type_is_unit(&info.ty) => {
Ok(self.add_subdiagnostic(&Ident::new("warn", Span::call_site()), msg))
}
"note" | "help" | "warning" => report_type_error(attr, "`Span` or `()`")?,
_ => unreachable!(),
}
}
fn generate_inner_field_code_suggestion(
&mut self,
attr: &Attribute,
info: FieldInfo<'_>,
) -> Result<TokenStream, DiagnosticDeriveError> {
let diag = &self.diag;
let mut meta = attr.parse_meta()?;
let Meta::List(MetaList { ref path, ref mut nested, .. }) = meta else { unreachable!() };
let (span_field, mut applicability) = self.span_and_applicability_of_ty(info)?;
let mut code = None;
let mut nested_iter = nested.into_iter().peekable();
let msg = if let Some(NestedMeta::Meta(Meta::Path(path))) = nested_iter.peek() {
let path = path.clone();
// Move the iterator forward if a path was found (don't otherwise so that
// code/applicability can be found or an error emitted).
nested_iter.next();
Some(path)
} else {
None
};
for nested_attr in nested_iter {
let meta = match nested_attr {
syn::NestedMeta::Meta(ref meta) => meta,
syn::NestedMeta::Lit(_) => throw_invalid_nested_attr!(attr, &nested_attr),
};
let nested_name = meta.path().segments.last().unwrap().ident.to_string();
let nested_name = nested_name.as_str();
match meta {
Meta::NameValue(MetaNameValue { lit: syn::Lit::Str(s), .. }) => {
let span = meta.span().unwrap();
match nested_name {
"code" => {
let formatted_str = self.build_format(&s.value(), s.span());
code.set_once(formatted_str, span);
}
"applicability" => match Applicability::from_str(&s.value()) {
Ok(v) => applicability.set_once(quote! { #v }, span),
Err(()) => {
span_err(span, "invalid applicability").emit();
}
},
_ => throw_invalid_nested_attr!(attr, &nested_attr, |diag| {
diag.help(
"only `message`, `code` and `applicability` are valid field \
attributes",
)
}),
}
if let Some((static_applicability, span)) = static_applicability {
applicability.set_once(quote! { #static_applicability }, span);
}
_ => throw_invalid_nested_attr!(attr, &nested_attr, |diag| {
if matches!(meta, Meta::Path(_)) {
diag.help("a diagnostic slug must be the first argument to the attribute")
} else {
diag
}
}),
let applicability = applicability
.value()
.unwrap_or_else(|| quote! { rustc_errors::Applicability::Unspecified });
let style = suggestion_kind.to_suggestion_style();
Ok(quote! {
#diag.span_suggestion_with_style(
#span_field,
rustc_errors::fluent::#slug,
#code,
#applicability,
#style
);
})
}
SubdiagnosticKind::MultipartSuggestion { .. } => unreachable!(),
}
let applicability = applicability
.value()
.unwrap_or_else(|| quote!(rustc_errors::Applicability::Unspecified));
let name = path.segments.last().unwrap().ident.to_string();
let method = format_ident!("span_{}", name);
let msg = msg.unwrap_or_else(|| parse_quote! { _subdiag::suggestion });
let msg = quote! { rustc_errors::fluent::#msg };
let code = code.value().unwrap_or_else(|| quote! { String::new() });
Ok(quote! { #diag.#method(#span_field, #msg, #code, #applicability); })
}
/// Adds a spanned subdiagnostic by generating a `diag.span_$kind` call with the current slug

56
src/test/ui-fulldeps/session-diagnostic/diagnostic-derive.rs
View File

@ -76,13 +76,15 @@ struct InvalidNestedStructAttr1 {}
#[derive(Diagnostic)]
#[diag(nonsense = "...", code = "E0123", slug = "foo")]
//~^ ERROR `#[diag(nonsense = ...)]` is not a valid attribute
//~^^ ERROR diagnostic slug not specified
//~| ERROR `#[diag(slug = ...)]` is not a valid attribute
//~| ERROR diagnostic slug not specified
struct InvalidNestedStructAttr2 {}
#[derive(Diagnostic)]
#[diag(nonsense = 4, code = "E0123", slug = "foo")]
//~^ ERROR `#[diag(nonsense = ...)]` is not a valid attribute
//~^^ ERROR diagnostic slug not specified
//~| ERROR `#[diag(slug = ...)]` is not a valid attribute
//~| ERROR diagnostic slug not specified
struct InvalidNestedStructAttr3 {}
#[derive(Diagnostic)]
@ -217,6 +219,7 @@ struct Suggest {
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
struct SuggestWithoutCode {
#[suggestion(typeck::suggestion)]
//~^ ERROR suggestion without `code = "..."`
suggestion: (Span, Applicability),
}
@ -225,6 +228,7 @@ struct SuggestWithoutCode {
struct SuggestWithBadKey {
#[suggestion(nonsense = "bar")]
//~^ ERROR `#[suggestion(nonsense = ...)]` is not a valid attribute
//~| ERROR suggestion without `code = "..."`
suggestion: (Span, Applicability),
}
@ -233,6 +237,7 @@ struct SuggestWithBadKey {
struct SuggestWithShorthandMsg {
#[suggestion(msg = "bar")]
//~^ ERROR `#[suggestion(msg = ...)]` is not a valid attribute
//~| ERROR suggestion without `code = "..."`
suggestion: (Span, Applicability),
}
@ -507,7 +512,7 @@ struct OptUnitField {
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
struct LabelWithTrailingPath {
#[label(typeck::label, foo)]
//~^ ERROR `#[label(...)]` is not a valid attribute
//~^ ERROR `#[label(foo)]` is not a valid attribute
span: Span,
}
@ -515,7 +520,7 @@ struct LabelWithTrailingPath {
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
struct LabelWithTrailingNameValue {
#[label(typeck::label, foo = "...")]
//~^ ERROR `#[label(...)]` is not a valid attribute
//~^ ERROR `#[label(foo = ...)]` is not a valid attribute
span: Span,
}
@ -523,7 +528,7 @@ struct LabelWithTrailingNameValue {
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
struct LabelWithTrailingList {
#[label(typeck::label, foo("..."))]
//~^ ERROR `#[label(...)]` is not a valid attribute
//~^ ERROR `#[label(foo(...))]` is not a valid attribute
span: Span,
}
@ -605,3 +610,44 @@ struct MissingApplicabilityInSuggestionTuple {
suggestion: (Span,),
//~^ ERROR wrong types for suggestion
}
#[derive(Diagnostic)]
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
struct MissingCodeInSuggestion {
#[suggestion(typeck::suggestion)]
//~^ ERROR suggestion without `code = "..."`
suggestion: Span,
}
#[derive(Diagnostic)]
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
#[multipart_suggestion(typeck::suggestion)]
//~^ ERROR `#[multipart_suggestion(...)]` is not a valid attribute
//~| ERROR cannot find attribute `multipart_suggestion` in this scope
#[multipart_suggestion()]
//~^ ERROR `#[multipart_suggestion(...)]` is not a valid attribute
//~| ERROR cannot find attribute `multipart_suggestion` in this scope
struct MultipartSuggestion {
#[multipart_suggestion(typeck::suggestion)]
//~^ ERROR `#[multipart_suggestion(...)]` is not a valid attribute
//~| ERROR cannot find attribute `multipart_suggestion` in this scope
suggestion: Span,
}
#[derive(Diagnostic)]
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
#[suggestion(typeck::suggestion, code = "...")]
//~^ ERROR `#[suggestion(...)]` is not a valid attribute
struct SuggestionOnStruct {
#[primary_span]
suggestion: Span,
}
#[derive(Diagnostic)]
#[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
#[label]
//~^ ERROR `#[label]` is not a valid attribute
struct LabelOnStruct {
#[primary_span]
suggestion: Span,
}

250
src/test/ui-fulldeps/session-diagnostic/diagnostic-derive.stderr
View File

@ -20,8 +20,6 @@ error: `#[nonsense(...)]` is not a valid attribute
|
LL | #[nonsense(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: only `diag`, `help`, `note` and `warning` are valid attributes
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:53:1
@ -41,7 +39,7 @@ error: `#[diag("...")]` is not a valid attribute
LL | #[diag("E0123")]
| ^^^^^^^
|
= help: first argument of the attribute should be the diagnostic slug
= help: a diagnostic slug is required as the first argument
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:60:1
@ -60,7 +58,7 @@ error: `#[diag(nonsense(...))]` is not a valid attribute
LL | #[diag(nonsense("foo"), code = "E0123", slug = "foo")]
| ^^^^^^^^^^^^^^^
|
= help: first argument of the attribute should be the diagnostic slug
= help: a diagnostic slug is required as the first argument
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:71:1
@ -79,7 +77,15 @@ error: `#[diag(nonsense = ...)]` is not a valid attribute
LL | #[diag(nonsense = "...", code = "E0123", slug = "foo")]
| ^^^^^^^^^^^^^^^^
|
= help: first argument of the attribute should be the diagnostic slug
= help: only `code` is a valid nested attributes following the slug
error: `#[diag(slug = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:77:42
|
LL | #[diag(nonsense = "...", code = "E0123", slug = "foo")]
| ^^^^^^^^^^^^
|
= help: only `code` is a valid nested attributes following the slug
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:77:1
@ -87,32 +93,40 @@ error: diagnostic slug not specified
LL | / #[diag(nonsense = "...", code = "E0123", slug = "foo")]
LL | |
LL | |
LL | |
LL | | struct InvalidNestedStructAttr2 {}
| |__________________________________^
|
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: `#[diag(nonsense = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:83:8
--> $DIR/diagnostic-derive.rs:84:8
|
LL | #[diag(nonsense = 4, code = "E0123", slug = "foo")]
| ^^^^^^^^^^^^
error: `#[diag(slug = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:84:38
|
= help: first argument of the attribute should be the diagnostic slug
LL | #[diag(nonsense = 4, code = "E0123", slug = "foo")]
| ^^^^^^^^^^^^
|
= help: only `code` is a valid nested attributes following the slug
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:83:1
--> $DIR/diagnostic-derive.rs:84:1
|
LL | / #[diag(nonsense = 4, code = "E0123", slug = "foo")]
LL | |
LL | |
LL | |
LL | | struct InvalidNestedStructAttr3 {}
| |__________________________________^
|
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: `#[diag(slug = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:89:58
--> $DIR/diagnostic-derive.rs:91:58
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0123", slug = "foo")]
| ^^^^^^^^^^^^
@ -120,55 +134,57 @@ LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0123", slug = "foo")]
= help: only `code` is a valid nested attributes following the slug
error: `#[suggestion = ...]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:96:5
--> $DIR/diagnostic-derive.rs:98:5
|
LL | #[suggestion = "bar"]
| ^^^^^^^^^^^^^^^^^^^^^
error: specified multiple times
--> $DIR/diagnostic-derive.rs:103:1
--> $DIR/diagnostic-derive.rs:105:8
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0456")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:102:1
--> $DIR/diagnostic-derive.rs:104:8
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: specified multiple times
--> $DIR/diagnostic-derive.rs:103:49
--> $DIR/diagnostic-derive.rs:105:49
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0456")]
| ^^^^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:102:49
--> $DIR/diagnostic-derive.rs:104:49
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^
error: specified multiple times
--> $DIR/diagnostic-derive.rs:109:65
--> $DIR/diagnostic-derive.rs:111:65
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0456", code = "E0457")]
| ^^^^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:109:49
--> $DIR/diagnostic-derive.rs:111:49
|
LL | #[diag(typeck::ambiguous_lifetime_bound, code = "E0456", code = "E0457")]
| ^^^^^^^
error: `#[diag(typeck::ambiguous_lifetime_bound)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:114:42
--> $DIR/diagnostic-derive.rs:116:42
|
LL | #[diag(typeck::ambiguous_lifetime_bound, typeck::ambiguous_lifetime_bound, code = "E0456")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: diagnostic slug must be the first argument
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:119:1
--> $DIR/diagnostic-derive.rs:121:1
|
LL | struct KindNotProvided {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^
@ -176,7 +192,7 @@ LL | struct KindNotProvided {}
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:122:1
--> $DIR/diagnostic-derive.rs:124:1
|
LL | / #[diag(code = "E0456")]
LL | |
@ -186,33 +202,31 @@ LL | | struct SlugNotProvided {}
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: the `#[primary_span]` attribute can only be applied to fields of type `Span` or `MultiSpan`
--> $DIR/diagnostic-derive.rs:133:5
--> $DIR/diagnostic-derive.rs:135:5
|
LL | #[primary_span]
| ^^^^^^^^^^^^^^^
error: `#[nonsense]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:141:5
--> $DIR/diagnostic-derive.rs:143:5
|
LL | #[nonsense]
| ^^^^^^^^^^^
|
= help: only `skip_arg`, `primary_span`, `label`, `note`, `help` and `subdiagnostic` are valid field attributes
error: the `#[label(...)]` attribute can only be applied to fields of type `Span` or `MultiSpan`
--> $DIR/diagnostic-derive.rs:158:5
--> $DIR/diagnostic-derive.rs:160:5
|
LL | #[label(typeck::label)]
| ^^^^^^^^^^^^^^^^^^^^^^^
error: `name` doesn't refer to a field on this type
--> $DIR/diagnostic-derive.rs:166:45
--> $DIR/diagnostic-derive.rs:168:45
|
LL | #[suggestion(typeck::suggestion, code = "{name}")]
| ^^^^^^^^
error: invalid format string: expected `'}'` but string was terminated
--> $DIR/diagnostic-derive.rs:171:16
--> $DIR/diagnostic-derive.rs:173:16
|
LL | #[derive(Diagnostic)]
| - ^ expected `'}'` in format string
@ -223,7 +237,7 @@ LL | #[derive(Diagnostic)]
= note: this error originates in the derive macro `Diagnostic` (in Nightly builds, run with -Z macro-backtrace for more info)
error: invalid format string: unmatched `}` found
--> $DIR/diagnostic-derive.rs:181:15
--> $DIR/diagnostic-derive.rs:183:15
|
LL | #[derive(Diagnostic)]
| ^ unmatched `}` in format string
@ -232,29 +246,47 @@ LL | #[derive(Diagnostic)]
= note: this error originates in the derive macro `Diagnostic` (in Nightly builds, run with -Z macro-backtrace for more info)
error: the `#[label(...)]` attribute can only be applied to fields of type `Span` or `MultiSpan`
--> $DIR/diagnostic-derive.rs:201:5
--> $DIR/diagnostic-derive.rs:203:5
|
LL | #[label(typeck::label)]
| ^^^^^^^^^^^^^^^^^^^^^^^
error: suggestion without `code = "..."`
--> $DIR/diagnostic-derive.rs:221:5
|
LL | #[suggestion(typeck::suggestion)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: `#[suggestion(nonsense = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:226:18
--> $DIR/diagnostic-derive.rs:229:18
|
LL | #[suggestion(nonsense = "bar")]
| ^^^^^^^^^^^^^^^^
|
= help: only `message`, `code` and `applicability` are valid field attributes
= help: only `code` and `applicability` are valid nested attributes
error: suggestion without `code = "..."`
--> $DIR/diagnostic-derive.rs:229:5
|
LL | #[suggestion(nonsense = "bar")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: `#[suggestion(msg = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:234:18
--> $DIR/diagnostic-derive.rs:238:18
|
LL | #[suggestion(msg = "bar")]
| ^^^^^^^^^^^
|
= help: only `message`, `code` and `applicability` are valid field attributes
= help: only `code` and `applicability` are valid nested attributes
error: suggestion without `code = "..."`
--> $DIR/diagnostic-derive.rs:238:5
|
LL | #[suggestion(msg = "bar")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: wrong field type for suggestion
--> $DIR/diagnostic-derive.rs:256:5
--> $DIR/diagnostic-derive.rs:261:5
|
LL | / #[suggestion(typeck::suggestion, code = "This is suggested code")]
LL | |
@ -264,73 +296,75 @@ LL | | suggestion: Applicability,
= help: `#[suggestion(...)]` should be applied to fields of type `Span` or `(Span, Applicability)`
error: specified multiple times
--> $DIR/diagnostic-derive.rs:272:24
--> $DIR/diagnostic-derive.rs:277:24
|
LL | suggestion: (Span, Span, Applicability),
| ^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:272:18
--> $DIR/diagnostic-derive.rs:277:18
|
LL | suggestion: (Span, Span, Applicability),
| ^^^^
error: specified multiple times
--> $DIR/diagnostic-derive.rs:280:33
--> $DIR/diagnostic-derive.rs:285:33
|
LL | suggestion: (Applicability, Applicability, Span),
| ^^^^^^^^^^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:280:18
--> $DIR/diagnostic-derive.rs:285:18
|
LL | suggestion: (Applicability, Applicability, Span),
| ^^^^^^^^^^^^^
error: `#[label = ...]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:287:5
--> $DIR/diagnostic-derive.rs:292:5
|
LL | #[label = "bar"]
| ^^^^^^^^^^^^^^^^
error: specified multiple times
--> $DIR/diagnostic-derive.rs:438:52
--> $DIR/diagnostic-derive.rs:443:52
|
LL | #[suggestion(typeck::suggestion, code = "...", applicability = "maybe-incorrect")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:440:24
--> $DIR/diagnostic-derive.rs:445:24
|
LL | suggestion: (Span, Applicability),
| ^^^^^^^^^^^^^
error: invalid applicability
--> $DIR/diagnostic-derive.rs:446:52
--> $DIR/diagnostic-derive.rs:451:52
|
LL | #[suggestion(typeck::suggestion, code = "...", applicability = "batman")]
| ^^^^^^^^^^^^^^^^^^^^^^^^
error: `#[label(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:509:5
error: `#[label(foo)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:514:28
|
LL | #[label(typeck::label, foo)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^
|
= help: a diagnostic slug must be the first argument to the attribute
error: `#[label(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:517:5
error: `#[label(foo = ...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:522:28
|
LL | #[label(typeck::label, foo = "...")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^^
error: `#[label(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:525:5
error: `#[label(foo(...))]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:530:28
|
LL | #[label(typeck::label, foo("..."))]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^
error: `#[primary_span]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:538:5
--> $DIR/diagnostic-derive.rs:543:5
|
LL | #[primary_span]
| ^^^^^^^^^^^^^^^
@ -338,15 +372,13 @@ LL | #[primary_span]
= help: the `primary_span` field attribute is not valid for lint diagnostics
error: `#[error(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:558:1
--> $DIR/diagnostic-derive.rs:563:1
|
LL | #[error(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: `error` and `lint` have been replaced by `diag`
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:558:1
--> $DIR/diagnostic-derive.rs:563:1
|
LL | / #[error(typeck::ambiguous_lifetime_bound, code = "E0123")]
LL | |
@ -358,15 +390,13 @@ LL | | struct ErrorAttribute {}
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: `#[warn_(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:565:1
--> $DIR/diagnostic-derive.rs:570:1
|
LL | #[warn_(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: `warn_` have been replaced by `warning`
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:565:1
--> $DIR/diagnostic-derive.rs:570:1
|
LL | / #[warn_(typeck::ambiguous_lifetime_bound, code = "E0123")]
LL | |
@ -378,15 +408,13 @@ LL | | struct WarnAttribute {}
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: `#[lint(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:572:1
--> $DIR/diagnostic-derive.rs:577:1
|
LL | #[lint(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: `error` and `lint` have been replaced by `diag`
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:572:1
--> $DIR/diagnostic-derive.rs:577:1
|
LL | / #[lint(typeck::ambiguous_lifetime_bound, code = "E0123")]
LL | |
@ -398,15 +426,13 @@ LL | | struct LintAttributeOnSessionDiag {}
= help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(typeck::example_error)]`
error: `#[lint(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:579:1
--> $DIR/diagnostic-derive.rs:584:1
|
LL | #[lint(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: `error` and `lint` have been replaced by `diag`
error: diagnostic slug not specified
--> $DIR/diagnostic-derive.rs:579:1
--> $DIR/diagnostic-derive.rs:584:1
|
LL | / #[lint(typeck::ambiguous_lifetime_bound, code = "E0123")]
LL | |
@ -418,19 +444,19 @@ LL | | struct LintAttributeOnLintDiag {}
= help: specify the slug as the first argument to the attribute, such as `#[diag(typeck::example_error)]`
error: specified multiple times
--> $DIR/diagnostic-derive.rs:588:52
--> $DIR/diagnostic-derive.rs:593:52
|
LL | #[suggestion(typeck::suggestion, code = "...", code = ",,,")]
| ^^^^^^^^^^^^
|
note: previously specified here
--> $DIR/diagnostic-derive.rs:588:38
--> $DIR/diagnostic-derive.rs:593:38
|
LL | #[suggestion(typeck::suggestion, code = "...", code = ",,,")]
| ^^^^^^^^^^^^
error: wrong types for suggestion
--> $DIR/diagnostic-derive.rs:597:24
--> $DIR/diagnostic-derive.rs:602:24
|
LL | suggestion: (Span, usize),
| ^^^^^
@ -438,13 +464,59 @@ LL | suggestion: (Span, usize),
= help: `#[suggestion(...)]` on a tuple field must be applied to fields of type `(Span, Applicability)`
error: wrong types for suggestion
--> $DIR/diagnostic-derive.rs:605:17
--> $DIR/diagnostic-derive.rs:610:17
|
LL | suggestion: (Span,),
| ^^^^^^^
|
= help: `#[suggestion(...)]` on a tuple field must be applied to fields of type `(Span, Applicability)`
error: suggestion without `code = "..."`
--> $DIR/diagnostic-derive.rs:617:5
|
LL | #[suggestion(typeck::suggestion)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: `#[multipart_suggestion(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:624:1
|
LL | #[multipart_suggestion(typeck::suggestion)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider creating a `Subdiagnostic` instead
error: `#[multipart_suggestion(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:627:1
|
LL | #[multipart_suggestion()]
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider creating a `Subdiagnostic` instead
error: `#[multipart_suggestion(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:631:5
|
LL | #[multipart_suggestion(typeck::suggestion)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider creating a `Subdiagnostic` instead
error: `#[suggestion(...)]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:639:1
|
LL | #[suggestion(typeck::suggestion, code = "...")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: `#[label]` and `#[suggestion]` can only be applied to fields
error: `#[label]` is not a valid attribute
--> $DIR/diagnostic-derive.rs:648:1
|
LL | #[label]
| ^^^^^^^^
|
= help: `#[label]` and `#[suggestion]` can only be applied to fields
error: cannot find attribute `nonsense` in this scope
--> $DIR/diagnostic-derive.rs:53:3
|
@ -452,35 +524,53 @@ LL | #[nonsense(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^^^^
error: cannot find attribute `nonsense` in this scope
--> $DIR/diagnostic-derive.rs:141:7
--> $DIR/diagnostic-derive.rs:143:7
|
LL | #[nonsense]
| ^^^^^^^^
error: cannot find attribute `error` in this scope
--> $DIR/diagnostic-derive.rs:558:3
--> $DIR/diagnostic-derive.rs:563:3
|
LL | #[error(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^
error: cannot find attribute `warn_` in this scope
--> $DIR/diagnostic-derive.rs:565:3
--> $DIR/diagnostic-derive.rs:570:3
|
LL | #[warn_(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^^ help: a built-in attribute with a similar name exists: `warn`
error: cannot find attribute `lint` in this scope
--> $DIR/diagnostic-derive.rs:572:3
--> $DIR/diagnostic-derive.rs:577:3
|
LL | #[lint(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^ help: a built-in attribute with a similar name exists: `link`
error: cannot find attribute `lint` in this scope
--> $DIR/diagnostic-derive.rs:579:3
--> $DIR/diagnostic-derive.rs:584:3
|
LL | #[lint(typeck::ambiguous_lifetime_bound, code = "E0123")]
| ^^^^ help: a built-in attribute with a similar name exists: `link`
error: cannot find attribute `multipart_suggestion` in this scope
--> $DIR/diagnostic-derive.rs:624:3
|
LL | #[multipart_suggestion(typeck::suggestion)]
| ^^^^^^^^^^^^^^^^^^^^
error: cannot find attribute `multipart_suggestion` in this scope
--> $DIR/diagnostic-derive.rs:627:3
|
LL | #[multipart_suggestion()]
| ^^^^^^^^^^^^^^^^^^^^
error: cannot find attribute `multipart_suggestion` in this scope
--> $DIR/diagnostic-derive.rs:631:7
|
LL | #[multipart_suggestion(typeck::suggestion)]
| ^^^^^^^^^^^^^^^^^^^^
error[E0425]: cannot find value `nonsense` in module `rustc_errors::fluent`
--> $DIR/diagnostic-derive.rs:66:8
|
@ -488,7 +578,7 @@ LL | #[diag(nonsense, code = "E0123")]
| ^^^^^^^^ not found in `rustc_errors::fluent`
error[E0277]: the trait bound `Hello: IntoDiagnosticArg` is not satisfied
--> $DIR/diagnostic-derive.rs:331:10
--> $DIR/diagnostic-derive.rs:336:10
|
LL | #[derive(Diagnostic)]
| ^^^^^^^^^^ the trait `IntoDiagnosticArg` is not implemented for `Hello`
@ -501,7 +591,7 @@ LL | arg: impl IntoDiagnosticArg,
| ^^^^^^^^^^^^^^^^^ required by this bound in `DiagnosticBuilder::<'a, G>::set_arg`
= note: this error originates in the derive macro `Diagnostic` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 58 previous errors
error: aborting due to 72 previous errors
Some errors have detailed explanations: E0277, E0425.
For more information about an error, try `rustc --explain E0277`.