languages/rust
languages/rust
1
0
Fork 0
mirror of https://github.com/rust-lang/rust synced 2024-10-14 20:46:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

ast_passes: use derive more

Browse source 
Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2022-10-14 13:11:21 +01:00
parent 2a4b587a68
commit ea5d258a75
2 changed files with 6 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
compiler/rustc_ast_passes/src/ast_validation.rs
View file

@ -14,6 +14,7 @@
use rustc_ast_pretty::pprust::{self, State};
use rustc_data_structures::fx::FxHashMap;
use rustc_errors::{error_code, fluent, pluralize, struct_span_err, Applicability};
use rustc_macros::Subdiagnostic;
use rustc_parse::validate_attr;
use rustc_session::lint::builtin::{
DEPRECATED_WHERE_CLAUSE_LOCATION, MISSING_ABI, PATTERNS_IN_FNS_WITHOUT_BODY,
@ -1782,15 +1783,17 @@ pub fn check_crate(session: &Session, krate: &Crate, lints: &mut LintBuffer) ->
}
/// Used to forbid `let` expressions in certain syntactic locations.
#[derive(Clone, Copy)]
#[derive(Clone, Copy, Subdiagnostic)]
pub(crate) enum ForbiddenLetReason {
/// `let` is not valid and the source environment is not important
GenericForbidden,
/// A let chain with the `||` operator
NotSupportedOr(Span),
#[note(ast_passes::not_supported_or)]
NotSupportedOr(#[primary_span] Span),
/// A let chain with invalid parentheses
///
/// For example, `let 1 = 1 && (expr && expr)` is allowed
/// but `(let 1 = 1 && (let 1 = 1 && (let 1 = 1))) && let a = 1` is not
NotSupportedParentheses(Span),
#[note(ast_passes::not_supported_parentheses)]
NotSupportedParentheses(#[primary_span] Span),
}

17
compiler/rustc_ast_passes/src/errors.rs
View file

@ -16,23 +16,6 @@ pub struct ForbiddenLet {
pub(crate) reason: ForbiddenLetReason,
}
impl AddToDiagnostic for ForbiddenLetReason {
fn add_to_diagnostic_with<F>(self, diag: &mut Diagnostic, _: F)
where
F: Fn(&mut Diagnostic, SubdiagnosticMessage) -> SubdiagnosticMessage,
{
match self {
Self::GenericForbidden => {}
Self::NotSupportedOr(span) => {
diag.span_note(span, fluent::ast_passes::not_supported_or);
}
Self::NotSupportedParentheses(span) => {
diag.span_note(span, fluent::ast_passes::not_supported_parentheses);
}
}
}
}
#[derive(Diagnostic)]
#[diag(ast_passes::forbidden_let_stable)]
#[note]