rename "condition" to "filter"

Author: mejrs

compiler/rustc_attr_parsing/src/attributes/diagnostic/mod.rs

@@ -3,8 +3,8 @@ use std::ops::Range;
 use rustc_errors::{Diagnostic, E0232};
 use rustc_hir::AttrPath;
 use rustc_hir::attrs::diagnostic::{
-    Directive, FilterFormatString, Flag, FormatArg, FormatString, LitOrArg, Name, NameValue,
-    OnUnimplementedCondition, Piece, Predicate,
+    Directive, Filter, FilterFormatString, Flag, FormatArg, FormatString, LitOrArg, Name,
+    NameValue, Piece, Predicate,
 };
 use rustc_macros::Diagnostic;
 use rustc_parse_format::{
@@ -348,19 +348,19 @@ fn parse_directive_items<'p>(
                 if is_root {
                     let items = or_malformed!(item.args().as_list()?);
                     let mut iter = items.mixed();
-                    let condition: &MetaItemOrLitParser = match iter.next() {
+                    let filter: &MetaItemOrLitParser = match iter.next() {
                         Some(c) => c,
                         None => {
                             cx.emit_err(InvalidOnClause::Empty { span });
                             continue;
                         }
                     };
 
-                    let filter = parse_condition(condition);
+                    let filter = parse_filter(filter);
 
                     if items.len() < 2 {
                         // Something like `#[rustc_on_unimplemented(on(.., /* nothing */))]`
-                        // There's a condition but no directive behind it, this is a mistake.
+                        // There's a filter but no directive behind it, this is a mistake.
                         malformed!();
                     }
 
@@ -528,12 +528,10 @@ fn slice_span(input: Span, Range { start, end }: Range<usize>, is_source_literal
     if is_source_literal { input.from_inner(InnerSpan { start, end }) } else { input }
 }
 
-pub(crate) fn parse_condition(
-    input: &MetaItemOrLitParser,
-) -> Result<OnUnimplementedCondition, InvalidOnClause> {
+pub(crate) fn parse_filter(input: &MetaItemOrLitParser) -> Result<Filter, InvalidOnClause> {
     let span = input.span();
     let pred = parse_predicate(input)?;
-    Ok(OnUnimplementedCondition { span, pred })
+    Ok(Filter { span, pred })
 }
 
 fn parse_predicate(input: &MetaItemOrLitParser) -> Result<Predicate, InvalidOnClause> {
@@ -568,7 +566,7 @@ fn parse_predicate(input: &MetaItemOrLitParser) -> Result<Predicate, InvalidOnCl
                 return Err(InvalidOnClause::UnsupportedLiteral { span: p.args_span() });
             };
             let name = parse_name(predicate.name);
-            let value = parse_filter(value.name);
+            let value = parse_filter_format(value.name);
             let kv = NameValue { name, value };
             Ok(Predicate::Match(kv))
         }
@@ -603,7 +601,7 @@ fn parse_name(name: Symbol) -> Name {
     }
 }
 
-fn parse_filter(input: Symbol) -> FilterFormatString {
+fn parse_filter_format(input: Symbol) -> FilterFormatString {
     let pieces = Parser::new(input.as_str(), None, None, false, ParseMode::Diagnostic)
         .map(|p| match p {
             RpfPiece::Lit(s) => LitOrArg::Lit(Symbol::intern(s)),

compiler/rustc_hir/src/attrs/diagnostic.rs

@@ -14,7 +14,7 @@ pub struct Directive {
     pub is_rustc_attr: bool,
     /// This is never nested more than once, i.e. the directives in this
     /// thinvec have no filters of their own.
-    pub filters: ThinVec<(OnUnimplementedCondition, Directive)>,
+    pub filters: ThinVec<(Filter, Directive)>,
     pub message: Option<(Span, FormatString)>,
     pub label: Option<(Span, FormatString)>,
     pub notes: ThinVec<FormatString>,
@@ -51,29 +51,29 @@ impl Directive {
 
     pub fn eval(
         &self,
-        condition_options: Option<&ConditionOptions>,
+        filter_options: Option<&FilterOptions>,
         args: &FormatArgs,
     ) -> CustomDiagnostic {
         let this = &args.this;
         debug!(
-            "Directive::eval({self:?}, this={this}, options={condition_options:?}, args ={args:?})"
+            "Directive::eval({self:?}, this={this}, options={filter_options:?}, args ={args:?})"
         );
 
         let mut ret = CustomDiagnostic::default();
 
-        if let Some(condition_options) = condition_options {
+        if let Some(filter_options) = filter_options {
             for (filter, directive) in &self.filters {
-                if filter.matches_predicate(condition_options) {
+                if filter.matches_predicate(filter_options) {
                     debug!("eval: {filter:?} succeeded");
                     ret.update(directive, args);
                 } else {
-                    debug!("eval: skipping {filter:?} due to condition");
+                    debug!("eval: skipping {filter:?} due to {filter_options:?}");
                 }
             }
         } else {
             debug_assert!(
                 !self.is_rustc_attr,
-                "Directive::eval called for `rustc_on_unimplemented` without `condition_options`"
+                "Directive::eval called for `rustc_on_unimplemented` without `filter_options`"
             );
         };
         ret.update(self, args);
@@ -237,12 +237,12 @@ pub enum FormatArg {
 
 /// Represents the `on` filter in `#[rustc_on_unimplemented]`.
 #[derive(Clone, Debug, HashStable, Encodable, Decodable, PrintAttribute)]
-pub struct OnUnimplementedCondition {
+pub struct Filter {
     pub span: Span,
     pub pred: Predicate,
 }
-impl OnUnimplementedCondition {
-    pub fn matches_predicate(self: &OnUnimplementedCondition, options: &ConditionOptions) -> bool {
+impl Filter {
+    pub fn matches_predicate(&self, options: &FilterOptions) -> bool {
         self.pred.eval(&mut |p| match p {
             FlagOrNv::Flag(b) => options.has_flag(*b),
             FlagOrNv::NameValue(NameValue { name, value }) => {
@@ -257,7 +257,7 @@ impl OnUnimplementedCondition {
     }
 }
 
-/// Predicate(s) in `#[rustc_on_unimplemented]`'s `on` filter. See [`OnUnimplementedCondition`].
+/// Predicate(s) in `#[rustc_on_unimplemented]`'s `on` filter. See [`Filter`].
 ///
 /// It is similar to the predicate in the `cfg` attribute,
 /// and may contain nested predicates.
@@ -391,8 +391,7 @@ pub enum LitOrArg {
     Arg(Symbol),
 }
 
-/// Used with `OnUnimplementedCondition::matches_predicate` to evaluate the
-/// [`OnUnimplementedCondition`].
+/// Used with `Filter::matches_predicate` to evaluate the [`Filter`].
 ///
 /// For example, given a
 /// ```rust,ignore (just an example)
@@ -418,7 +417,7 @@ pub enum LitOrArg {
 /// it will look like this:
 ///
 /// ```rust,ignore (just an example)
-/// ConditionOptions {
+/// FilterOptions {
 ///     self_types: ["u32", "{integral}"],
 ///     from_desugaring: Some("QuestionMark"),
 ///     cause: None,
@@ -431,7 +430,7 @@ pub enum LitOrArg {
 /// }
 /// ```
 #[derive(Debug)]
-pub struct ConditionOptions {
+pub struct FilterOptions {
     /// All the self types that may apply.
     pub self_types: Vec<String>,
     // The kind of compiler desugaring.
@@ -445,7 +444,7 @@ pub struct ConditionOptions {
     pub generic_args: Vec<(Symbol, String)>,
 }
 
-impl ConditionOptions {
+impl FilterOptions {
     pub fn has_flag(&self, name: Flag) -> bool {
         match name {
             Flag::CrateLocal => self.crate_local,

compiler/rustc_trait_selection/src/error_reporting/traits/on_unimplemented.rs

@@ -1,7 +1,7 @@
 use std::path::PathBuf;
 
 use rustc_hir as hir;
-use rustc_hir::attrs::diagnostic::{ConditionOptions, CustomDiagnostic, FormatArgs};
+use rustc_hir::attrs::diagnostic::{CustomDiagnostic, FilterOptions, FormatArgs};
 use rustc_hir::def_id::LocalDefId;
 use rustc_hir::find_attr;
 use rustc_middle::ty::print::PrintTraitRefExt;
@@ -40,11 +40,11 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
         if trait_pred.polarity() != ty::PredicatePolarity::Positive {
             return CustomDiagnostic::default();
         }
-        let (condition_options, format_args) =
+        let (filter_options, format_args) =
             self.on_unimplemented_components(trait_pred, obligation, long_ty_path);
         if let Some(command) = find_attr!(self.tcx, trait_pred.def_id(), OnUnimplemented {directive, ..} => directive.as_deref()).flatten() {
             command.eval(
-                Some(&condition_options),
+                Some(&filter_options),
                 &format_args,
             )
         } else {
@@ -57,7 +57,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
         trait_pred: ty::PolyTraitPredicate<'tcx>,
         obligation: &PredicateObligation<'tcx>,
         long_ty_path: &mut Option<PathBuf>,
-    ) -> (ConditionOptions, FormatArgs) {
+    ) -> (FilterOptions, FormatArgs) {
         let (def_id, args) = (trait_pred.def_id(), trait_pred.skip_binder().trait_ref.args);
         let trait_pred = trait_pred.skip_binder();
 
@@ -219,14 +219,8 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
         let this = self.tcx.def_path_str(trait_pred.trait_ref.def_id);
         let this_sugared = trait_pred.trait_ref.print_trait_sugared().to_string();
 
-        let condition_options = ConditionOptions {
-            self_types,
-            from_desugaring,
-            cause,
-            crate_local,
-            direct,
-            generic_args,
-        };
+        let filter_options =
+            FilterOptions { self_types, from_desugaring, cause, crate_local, direct, generic_args };
 
         // Unlike the generic_args earlier,
         // this one is *not* collected under `with_no_trimmed_paths!`
@@ -256,6 +250,6 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
             .collect();
 
         let format_args = FormatArgs { this, this_sugared, generic_args, item_context };
-        (condition_options, format_args)
+        (filter_options, format_args)
     }
 }