diff options
Diffstat (limited to 'compiler/rustc_parse/src/errors.rs')
| -rw-r--r-- | compiler/rustc_parse/src/errors.rs | 1136 |
1 files changed, 1078 insertions, 58 deletions
diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs index 06b970ad9..1662db36d 100644 --- a/compiler/rustc_parse/src/errors.rs +++ b/compiler/rustc_parse/src/errors.rs @@ -1,11 +1,15 @@ +use std::borrow::Cow; + use rustc_ast::token::Token; -use rustc_ast::Path; -use rustc_errors::{fluent, AddToDiagnostic, Applicability, EmissionGuarantee, IntoDiagnostic}; +use rustc_ast::{Path, Visibility}; +use rustc_errors::{AddToDiagnostic, Applicability, EmissionGuarantee, IntoDiagnostic}; use rustc_macros::{Diagnostic, Subdiagnostic}; use rustc_session::errors::ExprParenthesesNeeded; +use rustc_span::edition::{Edition, LATEST_STABLE_EDITION}; use rustc_span::symbol::Ident; use rustc_span::{Span, Symbol}; +use crate::fluent_generated as fluent; use crate::parser::TokenDescription; #[derive(Diagnostic)] @@ -75,7 +79,7 @@ pub(crate) struct IncorrectSemicolon<'a> { #[diag(parse_incorrect_use_of_await)] pub(crate) struct IncorrectUseOfAwait { #[primary_span] - #[suggestion(parentheses_suggestion, code = "", applicability = "machine-applicable")] + #[suggestion(parse_parentheses_suggestion, code = "", applicability = "machine-applicable")] pub span: Span, } @@ -84,7 +88,7 @@ pub(crate) struct IncorrectUseOfAwait { pub(crate) struct IncorrectAwait { #[primary_span] pub span: Span, - #[suggestion(postfix_suggestion, code = "{expr}.await{question_mark}")] + #[suggestion(parse_postfix_suggestion, code = "{expr}.await{question_mark}")] pub sugg_span: (Span, Applicability), pub expr: String, pub question_mark: &'static str, @@ -137,7 +141,7 @@ pub(crate) struct InvalidComparisonOperator { #[derive(Subdiagnostic)] pub(crate) enum InvalidComparisonOperatorSub { #[suggestion( - use_instead, + parse_use_instead, style = "short", applicability = "machine-applicable", code = "{correct}" @@ -148,7 +152,7 @@ pub(crate) enum InvalidComparisonOperatorSub { invalid: String, correct: String, }, - #[label(spaceship_operator_invalid)] + #[label(parse_spaceship_operator_invalid)] Spaceship(#[primary_span] Span), } @@ -166,14 +170,14 @@ pub(crate) struct InvalidLogicalOperator { #[derive(Subdiagnostic)] pub(crate) enum InvalidLogicalOperatorSub { #[suggestion( - use_amp_amp_for_conjunction, + parse_use_amp_amp_for_conjunction, style = "short", applicability = "machine-applicable", code = "&&" )] Conjunction(#[primary_span] Span), #[suggestion( - use_pipe_pipe_for_disjunction, + parse_use_pipe_pipe_for_disjunction, style = "short", applicability = "machine-applicable", code = "||" @@ -259,14 +263,14 @@ pub(crate) struct UnexpectedTokenAfterLabel { #[primary_span] #[label(parse_unexpected_token_after_label)] pub span: Span, - #[suggestion(suggestion_remove_label, style = "verbose", code = "")] + #[suggestion(parse_suggestion_remove_label, style = "verbose", code = "")] pub remove_label: Option<Span>, #[subdiagnostic] pub enclose_in_block: Option<UnexpectedTokenAfterLabelSugg>, } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion_enclose_in_block, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion_enclose_in_block, applicability = "machine-applicable")] pub(crate) struct UnexpectedTokenAfterLabelSugg { #[suggestion_part(code = "{{ ")] pub left: Span, @@ -337,24 +341,33 @@ pub(crate) struct IfExpressionMissingThenBlock { #[primary_span] pub if_span: Span, #[subdiagnostic] - pub sub: IfExpressionMissingThenBlockSub, + pub missing_then_block_sub: IfExpressionMissingThenBlockSub, + #[subdiagnostic] + pub let_else_sub: Option<IfExpressionLetSomeSub>, } #[derive(Subdiagnostic)] pub(crate) enum IfExpressionMissingThenBlockSub { - #[help(condition_possibly_unfinished)] + #[help(parse_condition_possibly_unfinished)] UnfinishedCondition(#[primary_span] Span), - #[help(add_then_block)] + #[help(parse_add_then_block)] AddThenBlock(#[primary_span] Span), } +#[derive(Subdiagnostic)] +#[suggestion(parse_extra_if_in_let_else, applicability = "maybe-incorrect", code = "")] +pub(crate) struct IfExpressionLetSomeSub { + #[primary_span] + pub if_span: Span, +} + #[derive(Diagnostic)] #[diag(parse_if_expression_missing_condition)] pub(crate) struct IfExpressionMissingCondition { #[primary_span] - #[label(condition_label)] + #[label(parse_condition_label)] pub if_span: Span, - #[label(block_label)] + #[label(parse_block_label)] pub block_span: Span, } @@ -392,10 +405,10 @@ pub(crate) struct OuterAttributeNotAllowedOnIfElse { #[primary_span] pub last: Span, - #[label(branch_label)] + #[label(parse_branch_label)] pub branch_span: Span, - #[label(ctx_label)] + #[label(parse_ctx_label)] pub ctx_span: Span, pub ctx: String, @@ -415,13 +428,41 @@ pub(crate) struct MissingInInForLoop { #[derive(Subdiagnostic)] pub(crate) enum MissingInInForLoopSub { // Has been misleading, at least in the past (closed Issue #48492), thus maybe-incorrect - #[suggestion(use_in_not_of, style = "short", applicability = "maybe-incorrect", code = "in")] + #[suggestion( + parse_use_in_not_of, + style = "short", + applicability = "maybe-incorrect", + code = "in" + )] InNotOf(#[primary_span] Span), - #[suggestion(add_in, style = "short", applicability = "maybe-incorrect", code = " in ")] + #[suggestion(parse_add_in, style = "short", applicability = "maybe-incorrect", code = " in ")] AddIn(#[primary_span] Span), } #[derive(Diagnostic)] +#[diag(parse_missing_expression_in_for_loop)] +pub(crate) struct MissingExpressionInForLoop { + #[primary_span] + #[suggestion( + code = "/* expression */ ", + applicability = "has-placeholders", + style = "verbose" + )] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_loop_else)] +#[note] +pub(crate) struct LoopElseNotSupported { + #[primary_span] + pub span: Span, + pub loop_kind: &'static str, + #[label(parse_loop_keyword)] + pub loop_kw: Span, +} + +#[derive(Diagnostic)] #[diag(parse_missing_comma_after_match_arm)] pub(crate) struct MissingCommaAfterMatchArm { #[primary_span] @@ -460,8 +501,8 @@ pub(crate) struct EqFieldInit { #[diag(parse_dotdotdot)] pub(crate) struct DotDotDot { #[primary_span] - #[suggestion(suggest_exclusive_range, applicability = "maybe-incorrect", code = "..")] - #[suggestion(suggest_inclusive_range, applicability = "maybe-incorrect", code = "..=")] + #[suggestion(parse_suggest_exclusive_range, applicability = "maybe-incorrect", code = "..")] + #[suggestion(parse_suggest_inclusive_range, applicability = "maybe-incorrect", code = "..=")] pub span: Span, } @@ -501,10 +542,10 @@ pub(crate) struct UseEmptyBlockNotSemi { #[diag(parse_comparison_interpreted_as_generic)] pub(crate) struct ComparisonInterpretedAsGeneric { #[primary_span] - #[label(label_comparison)] + #[label(parse_label_comparison)] pub comparison: Span, pub r#type: Path, - #[label(label_args)] + #[label(parse_label_args)] pub args: Span, #[subdiagnostic] pub suggestion: ComparisonOrShiftInterpretedAsGenericSugg, @@ -514,17 +555,17 @@ pub(crate) struct ComparisonInterpretedAsGeneric { #[diag(parse_shift_interpreted_as_generic)] pub(crate) struct ShiftInterpretedAsGeneric { #[primary_span] - #[label(label_comparison)] + #[label(parse_label_comparison)] pub shift: Span, pub r#type: Path, - #[label(label_args)] + #[label(parse_label_args)] pub args: Span, #[subdiagnostic] pub suggestion: ComparisonOrShiftInterpretedAsGenericSugg, } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct ComparisonOrShiftInterpretedAsGenericSugg { #[suggestion_part(code = "(")] pub left: Span, @@ -550,7 +591,7 @@ pub(crate) struct LeadingPlusNotSupported { #[label] pub span: Span, #[suggestion( - suggestion_remove_plus, + parse_suggestion_remove_plus, style = "verbose", code = "", applicability = "machine-applicable" @@ -573,7 +614,7 @@ pub(crate) struct ParenthesesWithStructFields { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion_braces_for_struct, applicability = "maybe-incorrect")] +#[multipart_suggestion(parse_suggestion_braces_for_struct, applicability = "maybe-incorrect")] pub(crate) struct BracesForStructLiteral { #[suggestion_part(code = " {{ ")] pub first: Span, @@ -582,7 +623,7 @@ pub(crate) struct BracesForStructLiteral { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion_no_fields_for_fn, applicability = "maybe-incorrect")] +#[multipart_suggestion(parse_suggestion_no_fields_for_fn, applicability = "maybe-incorrect")] pub(crate) struct NoFieldsForFnCall { #[suggestion_part(code = "")] pub fields: Vec<Span>, @@ -619,7 +660,7 @@ pub(crate) struct ArrayBracketsInsteadOfSpaces { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "maybe-incorrect")] +#[multipart_suggestion(parse_suggestion, applicability = "maybe-incorrect")] pub(crate) struct ArrayBracketsInsteadOfSpacesSugg { #[suggestion_part(code = "[")] pub left: Span, @@ -631,18 +672,57 @@ pub(crate) struct ArrayBracketsInsteadOfSpacesSugg { #[diag(parse_match_arm_body_without_braces)] pub(crate) struct MatchArmBodyWithoutBraces { #[primary_span] - #[label(label_statements)] + #[label(parse_label_statements)] pub statements: Span, - #[label(label_arrow)] + #[label(parse_label_arrow)] pub arrow: Span, pub num_statements: usize, #[subdiagnostic] pub sub: MatchArmBodyWithoutBracesSugg, } +#[derive(Diagnostic)] +#[diag(parse_inclusive_range_extra_equals)] +#[note] +pub(crate) struct InclusiveRangeExtraEquals { + #[primary_span] + #[suggestion( + parse_suggestion_remove_eq, + style = "short", + code = "..=", + applicability = "maybe-incorrect" + )] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_inclusive_range_match_arrow)] +pub(crate) struct InclusiveRangeMatchArrow { + #[primary_span] + pub arrow: Span, + #[label] + pub span: Span, + #[suggestion(style = "verbose", code = " ", applicability = "machine-applicable")] + pub after_pat: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_inclusive_range_no_end, code = "E0586")] +#[note] +pub(crate) struct InclusiveRangeNoEnd { + #[primary_span] + #[suggestion( + parse_suggestion_open_range, + code = "..", + applicability = "machine-applicable", + style = "short" + )] + pub span: Span, +} + #[derive(Subdiagnostic)] pub(crate) enum MatchArmBodyWithoutBracesSugg { - #[multipart_suggestion(suggestion_add_braces, applicability = "machine-applicable")] + #[multipart_suggestion(parse_suggestion_add_braces, applicability = "machine-applicable")] AddBraces { #[suggestion_part(code = "{{ ")] left: Span, @@ -650,7 +730,7 @@ pub(crate) enum MatchArmBodyWithoutBracesSugg { right: Span, }, #[suggestion( - suggestion_use_comma_not_semicolon, + parse_suggestion_use_comma_not_semicolon, code = ",", applicability = "machine-applicable" )] @@ -670,7 +750,7 @@ pub(crate) struct StructLiteralNotAllowedHere { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct StructLiteralNotAllowedHereSugg { #[suggestion_part(code = "(")] pub left: Span, @@ -692,9 +772,9 @@ pub(crate) struct InvalidLiteralSuffixOnTupleIndex { #[label] pub span: Span, pub suffix: Symbol, - #[help(tuple_exception_line_1)] - #[help(tuple_exception_line_2)] - #[help(tuple_exception_line_3)] + #[help(parse_tuple_exception_line_1)] + #[help(parse_tuple_exception_line_2)] + #[help(parse_tuple_exception_line_3)] pub exception: Option<()>, } @@ -712,11 +792,11 @@ pub(crate) struct MismatchedClosingDelimiter { #[primary_span] pub spans: Vec<Span>, pub delimiter: String, - #[label(label_unmatched)] + #[label(parse_label_unmatched)] pub unmatched: Span, - #[label(label_opening_candidate)] + #[label(parse_label_opening_candidate)] pub opening_candidate: Option<Span>, - #[label(label_unclosed)] + #[label(parse_label_unclosed)] pub unclosed: Option<Span>, } @@ -867,7 +947,7 @@ impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G> for ExpectedIdentifier { self, handler: &'a rustc_errors::Handler, ) -> rustc_errors::DiagnosticBuilder<'a, G> { - let token_descr = super::parser::TokenDescription::from_token(&self.token); + let token_descr = TokenDescription::from_token(&self.token); let mut diag = handler.struct_diagnostic(match token_descr { Some(TokenDescription::ReservedIdentifier) => { @@ -913,7 +993,7 @@ impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G> for ExpectedSemi { self, handler: &'a rustc_errors::Handler, ) -> rustc_errors::DiagnosticBuilder<'a, G> { - let token_descr = super::parser::TokenDescription::from_token(&self.token); + let token_descr = TokenDescription::from_token(&self.token); let mut diag = handler.struct_diagnostic(match token_descr { Some(TokenDescription::ReservedIdentifier) => { @@ -962,7 +1042,7 @@ pub(crate) struct StructLiteralBodyWithoutPath { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "has-placeholders")] +#[multipart_suggestion(parse_suggestion, applicability = "has-placeholders")] pub(crate) struct StructLiteralBodyWithoutPathSugg { #[suggestion_part(code = "{{ SomeStruct ")] pub before: Span, @@ -980,7 +1060,7 @@ pub(crate) struct StructLiteralNeedingParens { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct StructLiteralNeedingParensSugg { #[suggestion_part(code = "(")] pub before: Span, @@ -1007,7 +1087,7 @@ pub(crate) struct GenericParamsWithoutAngleBrackets { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct GenericParamsWithoutAngleBracketsSugg { #[suggestion_part(code = "<")] pub left: Span, @@ -1028,7 +1108,7 @@ pub(crate) struct ComparisonOperatorsCannotBeChained { )] pub suggest_turbofish: Option<Span>, #[help(parse_sugg_turbofish_syntax)] - #[help(sugg_parentheses_for_function_args)] + #[help(parse_sugg_parentheses_for_function_args)] pub help_turbofish: Option<()>, #[subdiagnostic] pub chaining_sugg: Option<ComparisonOperatorsCannotBeChainedSugg>, @@ -1037,7 +1117,7 @@ pub(crate) struct ComparisonOperatorsCannotBeChained { #[derive(Subdiagnostic)] pub(crate) enum ComparisonOperatorsCannotBeChainedSugg { #[suggestion( - sugg_split_comparison, + parse_sugg_split_comparison, style = "verbose", code = " && {middle_term}", applicability = "maybe-incorrect" @@ -1047,7 +1127,7 @@ pub(crate) enum ComparisonOperatorsCannotBeChainedSugg { span: Span, middle_term: String, }, - #[multipart_suggestion(sugg_parenthesize, applicability = "maybe-incorrect")] + #[multipart_suggestion(parse_sugg_parenthesize, applicability = "maybe-incorrect")] Parenthesize { #[suggestion_part(code = "(")] left: Span, @@ -1067,7 +1147,7 @@ pub(crate) struct QuestionMarkInType { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct QuestionMarkInTypeSugg { #[suggestion_part(code = "Option<")] pub left: Span, @@ -1085,7 +1165,7 @@ pub(crate) struct ParenthesesInForHead { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct ParenthesesInForHeadSugg { #[suggestion_part(code = "{left_snippet}")] pub left: Span, @@ -1145,7 +1225,7 @@ pub(crate) struct ConstGenericWithoutBraces { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct ConstGenericWithoutBracesSugg { #[suggestion_part(code = "{{ ")] pub left: Span, @@ -1165,7 +1245,7 @@ pub(crate) struct UnexpectedConstParamDeclaration { #[derive(Subdiagnostic)] pub(crate) enum UnexpectedConstParamDeclarationSugg { - #[multipart_suggestion(suggestion, applicability = "machine-applicable")] + #[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] AddParam { #[suggestion_part(code = "<{snippet}>")] impl_generics: Span, @@ -1174,7 +1254,7 @@ pub(crate) enum UnexpectedConstParamDeclarationSugg { snippet: String, ident: String, }, - #[multipart_suggestion(suggestion, applicability = "machine-applicable")] + #[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] AppendParam { #[suggestion_part(code = ", {snippet}")] impl_generics_end: Span, @@ -1221,7 +1301,7 @@ pub(crate) struct FnPtrWithGenerics { } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "maybe-incorrect")] +#[multipart_suggestion(parse_suggestion, applicability = "maybe-incorrect")] pub(crate) struct FnPtrWithGenericsSugg { #[suggestion_part(code = "{snippet}")] pub left: Span, @@ -1262,16 +1342,16 @@ pub(crate) struct WhereClauseBeforeTupleStructBody { #[primary_span] #[label] pub span: Span, - #[label(name_label)] + #[label(parse_name_label)] pub name: Span, - #[label(body_label)] + #[label(parse_body_label)] pub body: Span, #[subdiagnostic] pub sugg: Option<WhereClauseBeforeTupleStructBodySugg>, } #[derive(Subdiagnostic)] -#[multipart_suggestion(suggestion, applicability = "machine-applicable")] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] pub(crate) struct WhereClauseBeforeTupleStructBodySugg { #[suggestion_part(code = "{snippet}")] pub left: Span, @@ -1279,3 +1359,943 @@ pub(crate) struct WhereClauseBeforeTupleStructBodySugg { #[suggestion_part(code = "")] pub right: Span, } + +#[derive(Diagnostic)] +#[diag(parse_async_fn_in_2015, code = "E0670")] +pub(crate) struct AsyncFnIn2015 { + #[primary_span] + #[label] + pub span: Span, + #[subdiagnostic] + pub help: HelpUseLatestEdition, +} + +#[derive(Subdiagnostic)] +#[label(parse_async_block_in_2015)] +pub(crate) struct AsyncBlockIn2015 { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_self_argument_pointer)] +pub(crate) struct SelfArgumentPointer { + #[primary_span] + #[label] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_unexpected_token_after_dot)] +pub struct UnexpectedTokenAfterDot<'a> { + #[primary_span] + pub span: Span, + pub actual: Cow<'a, str>, +} + +#[derive(Diagnostic)] +#[diag(parse_visibility_not_followed_by_item)] +#[help] +pub(crate) struct VisibilityNotFollowedByItem { + #[primary_span] + #[label] + pub span: Span, + pub vis: Visibility, +} + +#[derive(Diagnostic)] +#[diag(parse_default_not_followed_by_item)] +#[note] +pub(crate) struct DefaultNotFollowedByItem { + #[primary_span] + #[label] + pub span: Span, +} + +#[derive(Diagnostic)] +pub(crate) enum MissingKeywordForItemDefinition { + #[diag(parse_missing_struct_for_struct_definition)] + Struct { + #[primary_span] + #[suggestion(style = "short", applicability = "maybe-incorrect", code = " struct ")] + span: Span, + ident: Ident, + }, + #[diag(parse_missing_fn_for_function_definition)] + Function { + #[primary_span] + #[suggestion(style = "short", applicability = "maybe-incorrect", code = " fn ")] + span: Span, + ident: Ident, + }, + #[diag(parse_missing_fn_for_method_definition)] + Method { + #[primary_span] + #[suggestion(style = "short", applicability = "maybe-incorrect", code = " fn ")] + span: Span, + ident: Ident, + }, + #[diag(parse_ambiguous_missing_keyword_for_item_definition)] + Ambiguous { + #[primary_span] + span: Span, + #[subdiagnostic] + subdiag: Option<AmbiguousMissingKwForItemSub>, + }, +} + +#[derive(Subdiagnostic)] +pub(crate) enum AmbiguousMissingKwForItemSub { + #[suggestion(parse_suggestion, applicability = "maybe-incorrect", code = "{snippet}!")] + SuggestMacro { + #[primary_span] + span: Span, + snippet: String, + }, + #[help(parse_help)] + HelpMacro, +} + +#[derive(Diagnostic)] +#[diag(parse_missing_trait_in_trait_impl)] +pub(crate) struct MissingTraitInTraitImpl { + #[primary_span] + #[suggestion(parse_suggestion_add_trait, code = " Trait ", applicability = "has-placeholders")] + pub span: Span, + #[suggestion(parse_suggestion_remove_for, code = "", applicability = "maybe-incorrect")] + pub for_span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_missing_for_in_trait_impl)] +pub(crate) struct MissingForInTraitImpl { + #[primary_span] + #[suggestion(style = "short", code = " for ", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_expected_trait_in_trait_impl_found_type)] +pub(crate) struct ExpectedTraitInTraitImplFoundType { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_bounds_not_allowed_on_trait_aliases)] +pub(crate) struct BoundsNotAllowedOnTraitAliases { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_trait_alias_cannot_be_auto)] +pub(crate) struct TraitAliasCannotBeAuto { + #[primary_span] + #[label(parse_trait_alias_cannot_be_auto)] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_trait_alias_cannot_be_unsafe)] +pub(crate) struct TraitAliasCannotBeUnsafe { + #[primary_span] + #[label(parse_trait_alias_cannot_be_unsafe)] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_associated_static_item_not_allowed)] +pub(crate) struct AssociatedStaticItemNotAllowed { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_extern_crate_name_with_dashes)] +pub(crate) struct ExternCrateNameWithDashes { + #[primary_span] + #[label] + pub span: Span, + #[subdiagnostic] + pub sugg: ExternCrateNameWithDashesSugg, +} + +#[derive(Subdiagnostic)] +#[multipart_suggestion(parse_suggestion, applicability = "machine-applicable")] +pub(crate) struct ExternCrateNameWithDashesSugg { + #[suggestion_part(code = "_")] + pub dashes: Vec<Span>, +} + +#[derive(Diagnostic)] +#[diag(parse_extern_item_cannot_be_const)] +#[note] +pub(crate) struct ExternItemCannotBeConst { + #[primary_span] + pub ident_span: Span, + #[suggestion(code = "static ", applicability = "machine-applicable")] + pub const_span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_const_global_cannot_be_mutable)] +pub(crate) struct ConstGlobalCannotBeMutable { + #[primary_span] + #[label] + pub ident_span: Span, + #[suggestion(code = "static", applicability = "maybe-incorrect")] + pub const_span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_missing_const_type)] +pub(crate) struct MissingConstType { + #[primary_span] + #[suggestion(code = "{colon} <type>", applicability = "has-placeholders")] + pub span: Span, + + pub kind: &'static str, + pub colon: &'static str, +} + +#[derive(Diagnostic)] +#[diag(parse_enum_struct_mutually_exclusive)] +pub(crate) struct EnumStructMutuallyExclusive { + #[primary_span] + #[suggestion(code = "enum", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +pub(crate) enum UnexpectedTokenAfterStructName { + #[diag(parse_unexpected_token_after_struct_name_found_reserved_identifier)] + ReservedIdentifier { + #[primary_span] + #[label(parse_unexpected_token_after_struct_name)] + span: Span, + token: Token, + }, + #[diag(parse_unexpected_token_after_struct_name_found_keyword)] + Keyword { + #[primary_span] + #[label(parse_unexpected_token_after_struct_name)] + span: Span, + token: Token, + }, + #[diag(parse_unexpected_token_after_struct_name_found_reserved_keyword)] + ReservedKeyword { + #[primary_span] + #[label(parse_unexpected_token_after_struct_name)] + span: Span, + token: Token, + }, + #[diag(parse_unexpected_token_after_struct_name_found_doc_comment)] + DocComment { + #[primary_span] + #[label(parse_unexpected_token_after_struct_name)] + span: Span, + token: Token, + }, + #[diag(parse_unexpected_token_after_struct_name_found_other)] + Other { + #[primary_span] + #[label(parse_unexpected_token_after_struct_name)] + span: Span, + token: Token, + }, +} + +impl UnexpectedTokenAfterStructName { + pub fn new(span: Span, token: Token) -> Self { + match TokenDescription::from_token(&token) { + Some(TokenDescription::ReservedIdentifier) => Self::ReservedIdentifier { span, token }, + Some(TokenDescription::Keyword) => Self::Keyword { span, token }, + Some(TokenDescription::ReservedKeyword) => Self::ReservedKeyword { span, token }, + Some(TokenDescription::DocComment) => Self::DocComment { span, token }, + None => Self::Other { span, token }, + } + } +} + +#[derive(Diagnostic)] +#[diag(parse_unexpected_self_in_generic_parameters)] +#[note] +pub(crate) struct UnexpectedSelfInGenericParameters { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_unexpected_default_value_for_lifetime_in_generic_parameters)] +pub(crate) struct UnexpectedDefaultValueForLifetimeInGenericParameters { + #[primary_span] + #[label] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_multiple_where_clauses)] +pub(crate) struct MultipleWhereClauses { + #[primary_span] + pub span: Span, + #[label] + pub previous: Span, + #[suggestion(style = "verbose", code = ",", applicability = "maybe-incorrect")] + pub between: Span, +} + +#[derive(Diagnostic)] +pub(crate) enum UnexpectedNonterminal { + #[diag(parse_nonterminal_expected_item_keyword)] + Item(#[primary_span] Span), + #[diag(parse_nonterminal_expected_statement)] + Statement(#[primary_span] Span), + #[diag(parse_nonterminal_expected_ident)] + Ident { + #[primary_span] + span: Span, + token: Token, + }, + #[diag(parse_nonterminal_expected_lifetime)] + Lifetime { + #[primary_span] + span: Span, + token: Token, + }, +} + +#[derive(Diagnostic)] +pub(crate) enum TopLevelOrPatternNotAllowed { + #[diag(parse_or_pattern_not_allowed_in_let_binding)] + LetBinding { + #[primary_span] + span: Span, + #[subdiagnostic] + sub: Option<TopLevelOrPatternNotAllowedSugg>, + }, + #[diag(parse_or_pattern_not_allowed_in_fn_parameters)] + FunctionParameter { + #[primary_span] + span: Span, + #[subdiagnostic] + sub: Option<TopLevelOrPatternNotAllowedSugg>, + }, +} + +#[derive(Diagnostic)] +#[diag(parse_cannot_be_raw_ident)] +pub struct CannotBeRawIdent { + #[primary_span] + pub span: Span, + pub ident: Symbol, +} + +#[derive(Diagnostic)] +#[diag(parse_cr_doc_comment)] +pub struct CrDocComment { + #[primary_span] + pub span: Span, + pub block: bool, +} + +#[derive(Diagnostic)] +#[diag(parse_no_digits_literal, code = "E0768")] +pub struct NoDigitsLiteral { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_invalid_digit_literal)] +pub struct InvalidDigitLiteral { + #[primary_span] + pub span: Span, + pub base: u32, +} + +#[derive(Diagnostic)] +#[diag(parse_empty_exponent_float)] +pub struct EmptyExponentFloat { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_float_literal_unsupported_base)] +pub struct FloatLiteralUnsupportedBase { + #[primary_span] + pub span: Span, + pub base: &'static str, +} + +#[derive(Diagnostic)] +#[diag(parse_unknown_prefix)] +#[note] +pub struct UnknownPrefix<'a> { + #[primary_span] + #[label] + pub span: Span, + pub prefix: &'a str, + #[subdiagnostic] + pub sugg: Option<UnknownPrefixSugg>, +} + +#[derive(Subdiagnostic)] +pub enum UnknownPrefixSugg { + #[suggestion( + parse_suggestion_br, + code = "br", + applicability = "maybe-incorrect", + style = "verbose" + )] + UseBr(#[primary_span] Span), + #[suggestion( + parse_suggestion_whitespace, + code = " ", + applicability = "maybe-incorrect", + style = "verbose" + )] + Whitespace(#[primary_span] Span), +} + +#[derive(Diagnostic)] +#[diag(parse_too_many_hashes)] +pub struct TooManyHashes { + #[primary_span] + pub span: Span, + pub num: u32, +} + +#[derive(Diagnostic)] +#[diag(parse_unknown_start_of_token)] +pub struct UnknownTokenStart { + #[primary_span] + pub span: Span, + pub escaped: String, + #[subdiagnostic] + pub sugg: Option<TokenSubstitution>, + #[subdiagnostic] + pub null: Option<UnknownTokenNull>, + #[subdiagnostic] + pub repeat: Option<UnknownTokenRepeat>, +} + +#[derive(Subdiagnostic)] +pub enum TokenSubstitution { + #[suggestion(parse_sugg_quotes, code = "{suggestion}", applicability = "maybe-incorrect")] + DirectedQuotes { + #[primary_span] + span: Span, + suggestion: String, + ascii_str: &'static str, + ascii_name: &'static str, + }, + #[suggestion(parse_sugg_other, code = "{suggestion}", applicability = "maybe-incorrect")] + Other { + #[primary_span] + span: Span, + suggestion: String, + ch: String, + u_name: &'static str, + ascii_str: &'static str, + ascii_name: &'static str, + }, +} + +#[derive(Subdiagnostic)] +#[note(parse_note_repeats)] +pub struct UnknownTokenRepeat { + pub repeats: usize, +} + +#[derive(Subdiagnostic)] +#[help(parse_help_null)] +pub struct UnknownTokenNull; + +#[derive(Diagnostic)] +pub enum UnescapeError { + #[diag(parse_invalid_unicode_escape)] + #[help] + InvalidUnicodeEscape { + #[primary_span] + #[label] + span: Span, + surrogate: bool, + }, + #[diag(parse_escape_only_char)] + EscapeOnlyChar { + #[primary_span] + span: Span, + #[suggestion(parse_escape, applicability = "machine-applicable", code = "{escaped_sugg}")] + char_span: Span, + escaped_sugg: String, + escaped_msg: String, + byte: bool, + }, + #[diag(parse_bare_cr)] + BareCr { + #[primary_span] + #[suggestion(parse_escape, applicability = "machine-applicable", code = "\\r")] + span: Span, + double_quotes: bool, + }, + #[diag(parse_bare_cr_in_raw_string)] + BareCrRawString(#[primary_span] Span), + #[diag(parse_too_short_hex_escape)] + TooShortHexEscape(#[primary_span] Span), + #[diag(parse_invalid_char_in_escape)] + InvalidCharInEscape { + #[primary_span] + #[label] + span: Span, + is_hex: bool, + ch: String, + }, + #[diag(parse_out_of_range_hex_escape)] + OutOfRangeHexEscape( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_leading_underscore_unicode_escape)] + LeadingUnderscoreUnicodeEscape { + #[primary_span] + #[label(parse_leading_underscore_unicode_escape_label)] + span: Span, + ch: String, + }, + #[diag(parse_overlong_unicode_escape)] + OverlongUnicodeEscape( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_unclosed_unicode_escape)] + UnclosedUnicodeEscape( + #[primary_span] + #[label] + Span, + #[suggestion( + parse_terminate, + code = "}}", + applicability = "maybe-incorrect", + style = "verbose" + )] + Span, + ), + #[diag(parse_no_brace_unicode_escape)] + NoBraceInUnicodeEscape { + #[primary_span] + span: Span, + #[label] + label: Option<Span>, + #[subdiagnostic] + sub: NoBraceUnicodeSub, + }, + #[diag(parse_unicode_escape_in_byte)] + #[help] + UnicodeEscapeInByte( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_empty_unicode_escape)] + EmptyUnicodeEscape( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_zero_chars)] + ZeroChars( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_lone_slash)] + LoneSlash( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_unskipped_whitespace)] + UnskippedWhitespace { + #[primary_span] + span: Span, + #[label] + char_span: Span, + ch: String, + }, + #[diag(parse_multiple_skipped_lines)] + MultipleSkippedLinesWarning( + #[primary_span] + #[label] + Span, + ), + #[diag(parse_more_than_one_char)] + MoreThanOneChar { + #[primary_span] + span: Span, + #[subdiagnostic] + note: Option<MoreThanOneCharNote>, + #[subdiagnostic] + suggestion: MoreThanOneCharSugg, + }, +} + +#[derive(Subdiagnostic)] +pub enum MoreThanOneCharSugg { + #[suggestion( + parse_consider_normalized, + code = "{normalized}", + applicability = "machine-applicable" + )] + NormalizedForm { + #[primary_span] + span: Span, + ch: String, + normalized: String, + }, + #[suggestion(parse_remove_non, code = "{ch}", applicability = "maybe-incorrect")] + RemoveNonPrinting { + #[primary_span] + span: Span, + ch: String, + }, + #[suggestion(parse_use_double_quotes, code = "{sugg}", applicability = "machine-applicable")] + Quotes { + #[primary_span] + span: Span, + is_byte: bool, + sugg: String, + }, +} + +#[derive(Subdiagnostic)] +pub enum MoreThanOneCharNote { + #[note(parse_followed_by)] + AllCombining { + #[primary_span] + span: Span, + chr: String, + len: usize, + escaped_marks: String, + }, + #[note(parse_non_printing)] + NonPrinting { + #[primary_span] + span: Span, + escaped: String, + }, +} + +#[derive(Subdiagnostic)] +pub enum NoBraceUnicodeSub { + #[suggestion(parse_use_braces, code = "{suggestion}", applicability = "maybe-incorrect")] + Suggestion { + #[primary_span] + span: Span, + suggestion: String, + }, + #[help(parse_format_of_unicode)] + Help, +} + +#[derive(Subdiagnostic)] +pub(crate) enum TopLevelOrPatternNotAllowedSugg { + #[suggestion( + parse_sugg_remove_leading_vert_in_pattern, + code = "{pat}", + applicability = "machine-applicable" + )] + RemoveLeadingVert { + #[primary_span] + span: Span, + pat: String, + }, + #[suggestion( + parse_sugg_wrap_pattern_in_parens, + code = "({pat})", + applicability = "machine-applicable" + )] + WrapInParens { + #[primary_span] + span: Span, + pat: String, + }, +} + +#[derive(Diagnostic)] +#[diag(parse_unexpected_vert_vert_before_function_parameter)] +#[note(parse_note_pattern_alternatives_use_single_vert)] +pub(crate) struct UnexpectedVertVertBeforeFunctionParam { + #[primary_span] + #[suggestion(code = "", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_unexpected_vert_vert_in_pattern)] +pub(crate) struct UnexpectedVertVertInPattern { + #[primary_span] + #[suggestion(code = "|", applicability = "machine-applicable")] + pub span: Span, + #[label(parse_label_while_parsing_or_pattern_here)] + pub start: Option<Span>, +} + +#[derive(Diagnostic)] +#[diag(parse_trailing_vert_not_allowed)] +pub(crate) struct TrailingVertNotAllowed { + #[primary_span] + #[suggestion(code = "", applicability = "machine-applicable")] + pub span: Span, + #[label(parse_label_while_parsing_or_pattern_here)] + pub start: Option<Span>, + pub token: Token, + #[note(parse_note_pattern_alternatives_use_single_vert)] + pub note_double_vert: Option<()>, +} + +#[derive(Diagnostic)] +#[diag(parse_dotdotdot_rest_pattern)] +pub(crate) struct DotDotDotRestPattern { + #[primary_span] + #[suggestion(style = "short", code = "..", applicability = "machine-applicable")] + #[label] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_pattern_on_wrong_side_of_at)] +pub(crate) struct PatternOnWrongSideOfAt { + #[primary_span] + #[suggestion(code = "{whole_pat}", applicability = "machine-applicable")] + pub whole_span: Span, + pub whole_pat: String, + #[label(parse_label_pattern)] + pub pattern: Span, + #[label(parse_label_binding)] + pub binding: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_expected_binding_left_of_at)] +#[note] +pub(crate) struct ExpectedBindingLeftOfAt { + #[primary_span] + pub whole_span: Span, + #[label(parse_label_lhs)] + pub lhs: Span, + #[label(parse_label_rhs)] + pub rhs: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_ambiguous_range_pattern)] +pub(crate) struct AmbiguousRangePattern { + #[primary_span] + #[suggestion(code = "({pat})", applicability = "maybe-incorrect")] + pub span: Span, + pub pat: String, +} + +#[derive(Diagnostic)] +#[diag(parse_unexpected_lifetime_in_pattern)] +pub(crate) struct UnexpectedLifetimeInPattern { + #[primary_span] + #[suggestion(code = "", applicability = "machine-applicable")] + pub span: Span, + pub symbol: Symbol, +} + +#[derive(Diagnostic)] +#[diag(parse_ref_mut_order_incorrect)] +pub(crate) struct RefMutOrderIncorrect { + #[primary_span] + #[suggestion(code = "ref mut", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +pub(crate) enum InvalidMutInPattern { + #[diag(parse_mut_on_nested_ident_pattern)] + #[note(parse_note_mut_pattern_usage)] + NestedIdent { + #[primary_span] + #[suggestion(code = "{pat}", applicability = "machine-applicable")] + span: Span, + pat: String, + }, + #[diag(parse_mut_on_non_ident_pattern)] + #[note(parse_note_mut_pattern_usage)] + NonIdent { + #[primary_span] + #[suggestion(code = "{pat}", applicability = "machine-applicable")] + span: Span, + pat: String, + }, +} + +#[derive(Diagnostic)] +#[diag(parse_repeated_mut_in_pattern)] +pub(crate) struct RepeatedMutInPattern { + #[primary_span] + #[suggestion(code = "", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_dot_dot_dot_range_to_pattern_not_allowed)] +pub(crate) struct DotDotDotRangeToPatternNotAllowed { + #[primary_span] + #[suggestion(style = "short", code = "..=", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_enum_pattern_instead_of_identifier)] +pub(crate) struct EnumPatternInsteadOfIdentifier { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_dot_dot_dot_for_remaining_fields)] +pub(crate) struct DotDotDotForRemainingFields { + #[primary_span] + #[suggestion(code = "..", style = "verbose", applicability = "machine-applicable")] + pub span: Span, + pub token_str: Cow<'static, str>, +} + +#[derive(Diagnostic)] +#[diag(parse_expected_comma_after_pattern_field)] +pub(crate) struct ExpectedCommaAfterPatternField { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_return_types_use_thin_arrow)] +pub(crate) struct ReturnTypesUseThinArrow { + #[primary_span] + #[suggestion(style = "short", code = "->", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_need_plus_after_trait_object_lifetime)] +pub(crate) struct NeedPlusAfterTraitObjectLifetime { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_expected_mut_or_const_in_raw_pointer_type)] +pub(crate) struct ExpectedMutOrConstInRawPointerType { + #[primary_span] + pub span: Span, + #[suggestion(code("mut ", "const "), applicability = "has-placeholders")] + pub after_asterisk: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_lifetime_after_mut)] +pub(crate) struct LifetimeAfterMut { + #[primary_span] + pub span: Span, + #[suggestion(code = "&{snippet} mut", applicability = "maybe-incorrect")] + pub suggest_lifetime: Option<Span>, + pub snippet: String, +} + +#[derive(Diagnostic)] +#[diag(parse_dyn_after_mut)] +pub(crate) struct DynAfterMut { + #[primary_span] + #[suggestion(code = "&mut dyn", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_fn_pointer_cannot_be_const)] +pub(crate) struct FnPointerCannotBeConst { + #[primary_span] + pub span: Span, + #[suggestion(code = "", applicability = "maybe-incorrect")] + #[label] + pub qualifier: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_fn_pointer_cannot_be_async)] +pub(crate) struct FnPointerCannotBeAsync { + #[primary_span] + pub span: Span, + #[suggestion(code = "", applicability = "maybe-incorrect")] + #[label] + pub qualifier: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_nested_c_variadic_type, code = "E0743")] +pub(crate) struct NestedCVariadicType { + #[primary_span] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_invalid_dyn_keyword)] +#[help] +pub(crate) struct InvalidDynKeyword { + #[primary_span] + #[suggestion(code = "", applicability = "machine-applicable")] + pub span: Span, +} + +#[derive(Diagnostic)] +#[diag(parse_negative_bounds_not_supported)] +pub(crate) struct NegativeBoundsNotSupported { + #[primary_span] + pub negative_bounds: Vec<Span>, + #[label] + pub last_span: Span, + #[subdiagnostic] + pub sub: Option<NegativeBoundsNotSupportedSugg>, +} + +#[derive(Subdiagnostic)] +#[suggestion( + parse_suggestion, + style = "tool-only", + code = "{fixed}", + applicability = "machine-applicable" +)] +pub(crate) struct NegativeBoundsNotSupportedSugg { + #[primary_span] + pub bound_list: Span, + pub num_bounds: usize, + pub fixed: String, +} + +#[derive(Subdiagnostic)] +pub enum HelpUseLatestEdition { + #[help(parse_help_set_edition_cargo)] + #[note(parse_note_edition_guide)] + Cargo { edition: Edition }, + #[help(parse_help_set_edition_standalone)] + #[note(parse_note_edition_guide)] + Standalone { edition: Edition }, +} + +impl HelpUseLatestEdition { + pub fn new() -> Self { + let edition = LATEST_STABLE_EDITION; + if std::env::var_os("CARGO").is_some() { + Self::Cargo { edition } + } else { + Self::Standalone { edition } + } + } +} |