Process consequences of moving validate_attr to rustc_attr_parsing

Author: JonathanBrouwer

Cargo.lock

@@ -3458,7 +3458,6 @@ dependencies = [
  "rustc_feature",
  "rustc_fluent_macro",
  "rustc_macros",
- "rustc_parse",
  "rustc_session",
  "rustc_span",
  "rustc_target",

compiler/rustc_ast_passes/Cargo.toml

@@ -15,7 +15,6 @@ rustc_errors = { path = "../rustc_errors" }
 rustc_feature = { path = "../rustc_feature" }
 rustc_fluent_macro = { path = "../rustc_fluent_macro" }
 rustc_macros = { path = "../rustc_macros" }
-rustc_parse = { path = "../rustc_parse" }
 rustc_session = { path = "../rustc_session" }
 rustc_span = { path = "../rustc_span" }
 rustc_target = { path = "../rustc_target" }

compiler/rustc_ast_passes/src/ast_validation.rs

@@ -26,10 +26,10 @@ use rustc_ast::ptr::P;
 use rustc_ast::visit::{AssocCtxt, BoundKind, FnCtxt, FnKind, Visitor, walk_list};
 use rustc_ast::*;
 use rustc_ast_pretty::pprust::{self, State};
+use rustc_attr_parsing::validate_attr;
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_errors::DiagCtxtHandle;
 use rustc_feature::Features;
-use rustc_parse::validate_attr;
 use rustc_session::Session;
 use rustc_session::lint::builtin::{
     DEPRECATED_WHERE_CLAUSE_LOCATION, MISSING_ABI, MISSING_UNSAFE_ON_EXTERN,

compiler/rustc_attr_parsing/messages.ftl

@@ -161,3 +161,15 @@ attr_parsing_unused_multiple =
 
 -attr_parsing_previously_accepted =
     this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+
+attr_parsing_meta_bad_delim = wrong meta list delimiters
+attr_parsing_meta_bad_delim_suggestion = the delimiters should be `(` and `)`
+
+attr_parsing_unsafe_attr_outside_unsafe = unsafe attribute used without unsafe
+    .label = usage of unsafe attribute
+attr_parsing_unsafe_attr_outside_unsafe_suggestion = wrap the attribute in `unsafe(...)`
+
+attr_parsing_invalid_attr_unsafe = `{$name}` is not an unsafe attribute
+    .label = this is not an unsafe attribute
+    .suggestion = remove the `unsafe(...)`
+    .note = extraneous unsafe is not allowed in attributes

compiler/rustc_attr_parsing/src/session_diagnostics.rs

@@ -1,6 +1,7 @@
 use std::num::IntErrorKind;
 
 use rustc_ast as ast;
+use rustc_ast::Path;
 use rustc_errors::codes::*;
 use rustc_errors::{
     Applicability, Diag, DiagArgValue, DiagCtxtHandle, Diagnostic, EmissionGuarantee, Level,
@@ -705,3 +706,56 @@ impl<'a, G: EmissionGuarantee> Diagnostic<'a, G> for AttributeParseError {
         diag
     }
 }
+
+#[derive(Diagnostic)]
+#[diag(attr_parsing_invalid_attr_unsafe)]
+#[note]
+pub(crate) struct InvalidAttrUnsafe {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+    pub name: Path,
+}
+
+#[derive(Diagnostic)]
+#[diag(attr_parsing_unsafe_attr_outside_unsafe)]
+pub(crate) struct UnsafeAttrOutsideUnsafe {
+    #[primary_span]
+    #[label]
+    pub span: Span,
+    #[subdiagnostic]
+    pub suggestion: UnsafeAttrOutsideUnsafeSuggestion,
+}
+
+#[derive(Subdiagnostic)]
+#[multipart_suggestion(
+    attr_parsing_unsafe_attr_outside_unsafe_suggestion,
+    applicability = "machine-applicable"
+)]
+pub(crate) struct UnsafeAttrOutsideUnsafeSuggestion {
+    #[suggestion_part(code = "unsafe(")]
+    pub left: Span,
+    #[suggestion_part(code = ")")]
+    pub right: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(attr_parsing_meta_bad_delim)]
+pub(crate) struct MetaBadDelim {
+    #[primary_span]
+    pub span: Span,
+    #[subdiagnostic]
+    pub sugg: MetaBadDelimSugg,
+}
+
+#[derive(Subdiagnostic)]
+#[multipart_suggestion(
+    attr_parsing_meta_bad_delim_suggestion,
+    applicability = "machine-applicable"
+)]
+pub(crate) struct MetaBadDelimSugg {
+    #[suggestion_part(code = "(")]
+    pub open: Span,
+    #[suggestion_part(code = ")")]
+    pub close: Span,
+}

compiler/rustc_attr_parsing/src/validate_attr.rs

@@ -8,16 +8,16 @@ use rustc_ast::{
     self as ast, AttrArgs, Attribute, DelimArgs, MetaItem, MetaItemInner, MetaItemKind, NodeId,
     Path, Safety,
 };
-use rustc_attr_parsing::{AttributeParser, Late};
 use rustc_errors::{Applicability, DiagCtxtHandle, FatalError, PResult};
 use rustc_feature::{AttributeSafety, AttributeTemplate, BUILTIN_ATTRIBUTE_MAP, BuiltinAttribute};
+use rustc_parse::parse_in;
 use rustc_session::errors::report_lit_error;
 use rustc_session::lint::BuiltinLintDiag;
 use rustc_session::lint::builtin::{ILL_FORMED_ATTRIBUTE_INPUT, UNSAFE_ATTR_OUTSIDE_UNSAFE};
 use rustc_session::parse::ParseSess;
 use rustc_span::{Span, Symbol, sym};
 
-use crate::{errors, parse_in};
+use crate::{AttributeParser, Late, session_diagnostics as errors};
 
 pub fn check_attr(psess: &ParseSess, attr: &Attribute, id: NodeId) {
     if attr.is_doc_comment() || attr.has_name(sym::cfg_trace) || attr.has_name(sym::cfg_attr_trace)
@@ -133,16 +133,6 @@ fn check_meta_bad_delim(psess: &ParseSess, span: DelimSpan, delim: Delimiter) {
     });
 }
 
-pub(super) fn check_cfg_attr_bad_delim(psess: &ParseSess, span: DelimSpan, delim: Delimiter) {
-    if let Delimiter::Parenthesis = delim {
-        return;
-    }
-    psess.dcx().emit_err(errors::CfgAttrBadDelim {
-        span: span.entire(),
-        sugg: errors::MetaBadDelimSugg { open: span.open, close: span.close },
-    });
-}
-
 /// Checks that the given meta-item is compatible with this `AttributeTemplate`.
 fn is_attr_template_compatible(template: &AttributeTemplate, meta: &ast::MetaItemKind) -> bool {
     let is_one_allowed_subword = |items: &[MetaItemInner]| match items {

compiler/rustc_builtin_macros/src/cfg_accessible.rs

@@ -1,9 +1,9 @@
 //! Implementation of the `#[cfg_accessible(path)]` attribute macro.
 
 use rustc_ast as ast;
+use rustc_attr_parsing::validate_attr;
 use rustc_expand::base::{Annotatable, ExpandResult, ExtCtxt, Indeterminate, MultiItemModifier};
 use rustc_feature::AttributeTemplate;
-use rustc_parse::validate_attr;
 use rustc_span::{Span, sym};
 
 use crate::errors;

compiler/rustc_builtin_macros/src/derive.rs

@@ -1,10 +1,10 @@
 use rustc_ast as ast;
 use rustc_ast::{GenericParamKind, ItemKind, MetaItemInner, MetaItemKind, StmtKind};
+use rustc_attr_parsing::validate_attr;
 use rustc_expand::base::{
     Annotatable, DeriveResolution, ExpandResult, ExtCtxt, Indeterminate, MultiItemModifier,
 };
 use rustc_feature::AttributeTemplate;
-use rustc_parse::validate_attr;
 use rustc_session::Session;
 use rustc_span::{ErrorGuaranteed, Ident, Span, sym};
 

compiler/rustc_builtin_macros/src/util.rs

@@ -1,13 +1,14 @@
 use rustc_ast::ptr::P;
 use rustc_ast::tokenstream::TokenStream;
 use rustc_ast::{self as ast, AttrStyle, Attribute, MetaItem, attr, token};
+use rustc_attr_parsing::validate_attr;
 use rustc_errors::{Applicability, Diag, ErrorGuaranteed};
 use rustc_expand::base::{Annotatable, ExpandResult, ExtCtxt};
 use rustc_expand::expand::AstFragment;
 use rustc_feature::AttributeTemplate;
 use rustc_lint_defs::BuiltinLintDiag;
 use rustc_lint_defs::builtin::DUPLICATE_MACRO_ATTRIBUTES;
-use rustc_parse::{exp, parser, validate_attr};
+use rustc_parse::{exp, parser};
 use rustc_session::errors::report_lit_error;
 use rustc_span::{BytePos, Span, Symbol};
 

compiler/rustc_expand/src/config.rs

@@ -11,17 +11,17 @@ use rustc_ast::{
     NodeId, NormalAttr,
 };
 use rustc_attr_parsing as attr;
+use rustc_attr_parsing::validate_attr::deny_builtin_meta_unsafety;
 use rustc_attr_parsing::{
     AttributeParser, CFG_TEMPLATE, EvalConfigResult, ShouldEmit, eval_config_entry, parse_cfg_attr,
+    validate_attr,
 };
 use rustc_data_structures::flat_map_in_place::FlatMapInPlace;
 use rustc_feature::{
     ACCEPTED_LANG_FEATURES, AttributeSafety, EnabledLangFeature, EnabledLibFeature, Features,
     REMOVED_LANG_FEATURES, UNSTABLE_LANG_FEATURES,
 };
 use rustc_lint_defs::BuiltinLintDiag;
-use rustc_parse::validate_attr;
-use rustc_parse::validate_attr::deny_builtin_meta_unsafety;
 use rustc_session::Session;
 use rustc_session::parse::feature_err;
 use rustc_span::{STDLIB_STABLE_CRATES, Span, Symbol, sym};