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Migrate ast_lowering::path to SessionDiagnostic

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This commit is contained in:
Jean CASPAR
2022-08-16 22:28:51 +02:00
parent a8a33cf271
commit 73ae38bac1
7 changed files with 46 additions and 15 deletions
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23
compiler/rustc_ast_lowering/src/path.rs
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@@ -1,11 +1,11 @@
use crate::ImplTraitPosition;
use super::errors::{GenericTypeWithParentheses, UseAngleBrackets};
use super::ResolverAstLoweringExt;
use super::{GenericArgsCtor, LifetimeRes, ParenthesizedGenericArgs};
use super::{ImplTraitContext, LoweringContext, ParamMode};
use rustc_ast::{self as ast, *};
use rustc_errors::{struct_span_err, Applicability};
use rustc_hir as hir;
use rustc_hir::def::{DefKind, PartialRes, Res};
use rustc_hir::GenericArg;
@@ -185,7 +185,6 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
) -> hir::PathSegment<'hir> {
debug!("path_span: {:?}, lower_path_segment(segment: {:?})", path_span, segment,);
let (mut generic_args, infer_args) = if let Some(ref generic_args) = segment.args {
let msg = "parenthesized type parameters may only be used with a `Fn` trait";
match **generic_args {
GenericArgs::AngleBracketed(ref data) => {
self.lower_angle_bracketed_parameter_data(data, param_mode, itctx)
@@ -193,10 +192,8 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
GenericArgs::Parenthesized(ref data) => match parenthesized_generic_args {
ParenthesizedGenericArgs::Ok => self.lower_parenthesized_parameter_data(data),
ParenthesizedGenericArgs::Err => {
let mut err = struct_span_err!(self.tcx.sess, data.span, E0214, "{}", msg);
err.span_label(data.span, "only `Fn` traits may use parentheses");
// Suggest replacing parentheses with angle brackets `Trait(params...)` to `Trait<params...>`
if !data.inputs.is_empty() {
let sub = if !data.inputs.is_empty() {
// Start of the span to the 1st character of 1st argument
let open_param = data.inputs_span.shrink_to_lo().to(data
.inputs
@@ -212,16 +209,12 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
.span
.shrink_to_hi()
.to(data.inputs_span.shrink_to_hi());
err.multipart_suggestion(
&format!("use angle brackets instead",),
vec![
(open_param, String::from("<")),
(close_param, String::from(">")),
],
Applicability::MaybeIncorrect,
);
}
err.emit();
Some(UseAngleBrackets { open_param, close_param })
} else {
None
};
self.tcx.sess.emit_err(GenericTypeWithParentheses { span: data.span, sub });
(
self.lower_angle_bracketed_parameter_data(
&data.as_angle_bracketed_args(),