Rename some Printer methods.

I find these name clearer, and starting them all with `print_` makes
things more consistent.

Author: nnethercote

compiler/rustc_const_eval/src/util/type_name.rs

@@ -73,20 +73,20 @@ impl<'tcx> Printer<'tcx> for TypeNamePrinter<'tcx> {
         self.pretty_print_dyn_existential(predicates)
     }
 
-    fn path_crate(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
+    fn print_crate_name(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
         self.path.push_str(self.tcx.crate_name(cnum).as_str());
         Ok(())
     }
 
-    fn path_qualified(
+    fn print_path_with_qualified(
         &mut self,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
     ) -> Result<(), PrintError> {
         self.pretty_path_qualified(self_ty, trait_ref)
     }
 
-    fn path_append_impl(
+    fn print_path_with_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         self_ty: Ty<'tcx>,
@@ -105,7 +105,7 @@ impl<'tcx> Printer<'tcx> for TypeNamePrinter<'tcx> {
         )
     }
 
-    fn path_append(
+    fn print_path_with_simple(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         disambiguated_data: &DisambiguatedDefPathData,
@@ -117,7 +117,7 @@ impl<'tcx> Printer<'tcx> for TypeNamePrinter<'tcx> {
         Ok(())
     }
 
-    fn path_generic_args(
+    fn print_path_with_generic_args(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         args: &[GenericArg<'tcx>],

compiler/rustc_lint/src/context.rs

@@ -774,12 +774,12 @@ impl<'tcx> LateContext<'tcx> {
                 unreachable!(); // because `path_generic_args` ignores the `GenericArgs`
             }
 
-            fn path_crate(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
+            fn print_crate_name(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
                 self.path = vec![self.tcx.crate_name(cnum)];
                 Ok(())
             }
 
-            fn path_qualified(
+            fn print_path_with_qualified(
                 &mut self,
                 self_ty: Ty<'tcx>,
                 trait_ref: Option<ty::TraitRef<'tcx>>,
@@ -800,7 +800,7 @@ impl<'tcx> LateContext<'tcx> {
                 })
             }
 
-            fn path_append_impl(
+            fn print_path_with_impl(
                 &mut self,
                 print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
                 self_ty: Ty<'tcx>,
@@ -825,7 +825,7 @@ impl<'tcx> LateContext<'tcx> {
                 Ok(())
             }
 
-            fn path_append(
+            fn print_path_with_simple(
                 &mut self,
                 print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
                 disambiguated_data: &DisambiguatedDefPathData,
@@ -844,7 +844,7 @@ impl<'tcx> LateContext<'tcx> {
                 Ok(())
             }
 
-            fn path_generic_args(
+            fn print_path_with_generic_args(
                 &mut self,
                 print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
                 _args: &[GenericArg<'tcx>],

compiler/rustc_middle/src/ty/print/mod.rs

@@ -81,25 +81,25 @@ pub trait Printer<'tcx>: Sized {
     fn print_const(&mut self, ct: ty::Const<'tcx>) -> Result<(), PrintError>;
 
     /// Appends a representation of a crate name, e.g. `std`, or even ``.
-    fn path_crate(&mut self, cnum: CrateNum) -> Result<(), PrintError>;
+    fn print_crate_name(&mut self, cnum: CrateNum) -> Result<(), PrintError>;
 
     /// Appends a representation of a (full or partial) simple path, in two parts. `print_prefix`,
     /// when called, appends the representation of the leading segments. The rest of the method
     /// appends the representation of the final segment, the details of which are in
     /// `disambiguated_data`.
     ///
     /// E.g. `std::io` + `Read` -> `std::io::Read`.
-    fn path_append(
+    fn print_path_with_simple(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         disambiguated_data: &DisambiguatedDefPathData,
     ) -> Result<(), PrintError>;
 
-    /// Similar to `path_append`, but the final segment is an `impl` segment.
+    /// Similar to `print_path_with_simple`, but the final segment is an `impl` segment.
     ///
     /// E.g. `slice` + `<impl [T]>` -> `slice::<impl [T]>`, which may then be further appended to,
     /// giving a longer path representation such as `slice::<impl [T]>::to_vec_in::ConvertVec`.
-    fn path_append_impl(
+    fn print_path_with_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         self_ty: Ty<'tcx>,
@@ -112,15 +112,15 @@ pub trait Printer<'tcx>: Sized {
     /// args.)
     ///
     /// E.g. `ImplementsTraitForUsize` + `<usize>` -> `ImplementsTraitForUsize<usize>`.
-    fn path_generic_args(
+    fn print_path_with_generic_args(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         args: &[GenericArg<'tcx>],
     ) -> Result<(), PrintError>;
 
     /// Appends a representation of a qualified path segment, e.g. `<OsString as From<&T>>`.
     /// If `trait_ref` is `None`, it may fall back to simpler forms, e.g. `<Vec<T>>` or just `Foo`.
-    fn path_qualified(
+    fn print_path_with_qualified(
         &mut self,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
@@ -140,7 +140,7 @@ pub trait Printer<'tcx>: Sized {
         match key.disambiguated_data.data {
             DefPathData::CrateRoot => {
                 assert!(key.parent.is_none());
-                self.path_crate(def_id.krate)
+                self.print_crate_name(def_id.krate)
             }
 
             DefPathData::Impl => self.print_impl_path(def_id, args),
@@ -164,7 +164,7 @@ pub trait Printer<'tcx>: Sized {
                             )) = self.tcx().coroutine_kind(def_id)
                                 && args.len() > parent_args.len()
                             {
-                                return self.path_generic_args(
+                                return self.print_path_with_generic_args(
                                     |p| p.print_def_path(def_id, parent_args),
                                     &args[..parent_args.len() + 1][..1],
                                 );
@@ -186,7 +186,7 @@ pub trait Printer<'tcx>: Sized {
                         _ => {
                             if !generics.is_own_empty() && args.len() >= generics.count() {
                                 let args = generics.own_args_no_defaults(self.tcx(), args);
-                                return self.path_generic_args(
+                                return self.print_path_with_generic_args(
                                     |p| p.print_def_path(def_id, parent_args),
                                     args,
                                 );
@@ -202,15 +202,15 @@ pub trait Printer<'tcx>: Sized {
                         && self.tcx().generics_of(parent_def_id).parent_count == 0;
                 }
 
-                self.path_append(
+                self.print_path_with_simple(
                     |p: &mut Self| {
                         if trait_qualify_parent {
                             let trait_ref = ty::TraitRef::new(
                                 p.tcx(),
                                 parent_def_id,
                                 parent_args.iter().copied(),
                             );
-                            p.path_qualified(trait_ref.self_ty(), Some(trait_ref))
+                            p.print_path_with_qualified(trait_ref.self_ty(), Some(trait_ref))
                         } else {
                             p.print_def_path(parent_def_id, parent_args)
                         }
@@ -253,11 +253,15 @@ pub trait Printer<'tcx>: Sized {
             // If the impl is not co-located with either self-type or
             // trait-type, then fallback to a format that identifies
             // the module more clearly.
-            self.path_append_impl(|p| p.print_def_path(parent_def_id, &[]), self_ty, impl_trait_ref)
+            self.print_path_with_impl(
+                |p| p.print_def_path(parent_def_id, &[]),
+                self_ty,
+                impl_trait_ref,
+            )
         } else {
             // Otherwise, try to give a good form that would be valid language
             // syntax. Preferably using associated item notation.
-            self.path_qualified(self_ty, impl_trait_ref)
+            self.print_path_with_qualified(self_ty, impl_trait_ref)
         }
     }
 }

compiler/rustc_middle/src/ty/print/pretty.rs

@@ -474,7 +474,7 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
         // path to the crate followed by the path to the item within the crate.
         if let Some(cnum) = def_id.as_crate_root() {
             if cnum == LOCAL_CRATE {
-                self.path_crate(cnum)?;
+                self.print_crate_name(cnum)?;
                 return Ok(true);
             }
 
@@ -498,7 +498,7 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
                         // or avoid ending up with `ExternCrateSource::Extern`,
                         // for the injected `std`/`core`.
                         if span.is_dummy() {
-                            self.path_crate(cnum)?;
+                            self.print_crate_name(cnum)?;
                             return Ok(true);
                         }
 
@@ -512,13 +512,13 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
                         return Ok(true);
                     }
                     (ExternCrateSource::Path, LOCAL_CRATE) => {
-                        self.path_crate(cnum)?;
+                        self.print_crate_name(cnum)?;
                         return Ok(true);
                     }
                     _ => {}
                 },
                 None => {
-                    self.path_crate(cnum)?;
+                    self.print_crate_name(cnum)?;
                     return Ok(true);
                 }
             }
@@ -628,7 +628,7 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
             return Ok(false);
         }
         callers.push(visible_parent);
-        // HACK(eddyb) this bypasses `path_append`'s prefix printing to avoid
+        // HACK(eddyb) this bypasses `print_path_with_simple`'s prefix printing to avoid
         // knowing ahead of time whether the entire path will succeed or not.
         // To support printers that do not implement `PrettyPrinter`, a `Vec` or
         // linked list on the stack would need to be built, before any printing.
@@ -637,7 +637,10 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
             true => {}
         }
         callers.pop();
-        self.path_append(|_| Ok(()), &DisambiguatedDefPathData { data, disambiguator: 0 })?;
+        self.print_path_with_simple(
+            |_| Ok(()),
+            &DisambiguatedDefPathData { data, disambiguator: 0 },
+        )?;
         Ok(true)
     }
 
@@ -1312,10 +1315,10 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
         alias_ty: ty::AliasTerm<'tcx>,
     ) -> Result<(), PrintError> {
         let def_key = self.tcx().def_key(alias_ty.def_id);
-        self.path_generic_args(
+        self.print_path_with_generic_args(
             |p| {
-                p.path_append(
-                    |p| p.path_qualified(alias_ty.self_ty(), None),
+                p.print_path_with_simple(
+                    |p| p.print_path_with_qualified(alias_ty.self_ty(), None),
                     &def_key.disambiguated_data,
                 )
             },
@@ -1400,7 +1403,7 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
                     }
                 }
 
-                // HACK(eddyb) this duplicates `FmtPrinter`'s `path_generic_args`,
+                // HACK(eddyb) this duplicates `FmtPrinter`'s `print_path_with_generic_args`,
                 // in order to place the projections inside the `<...>`.
                 if !resugared {
                     let principal_with_self =
@@ -2234,7 +2237,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
 
                 self.print_def_path(parent_def_id, &[])?;
 
-                // HACK(eddyb) copy of `path_append` to avoid
+                // HACK(eddyb) copy of `print_path_with_simple` to avoid
                 // constructing a `DisambiguatedDefPathData`.
                 if !self.empty_path {
                     write!(self, "::")?;
@@ -2310,7 +2313,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
         self.pretty_print_const(ct, false)
     }
 
-    fn path_crate(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
+    fn print_crate_name(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
         self.empty_path = true;
         if cnum == LOCAL_CRATE {
             if self.tcx.sess.at_least_rust_2018() {
@@ -2327,7 +2330,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
         Ok(())
     }
 
-    fn path_qualified(
+    fn print_path_with_qualified(
         &mut self,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
@@ -2337,7 +2340,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
         Ok(())
     }
 
-    fn path_append_impl(
+    fn print_path_with_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         self_ty: Ty<'tcx>,
@@ -2359,7 +2362,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
         Ok(())
     }
 
-    fn path_append(
+    fn print_path_with_simple(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         disambiguated_data: &DisambiguatedDefPathData,
@@ -2390,7 +2393,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
         Ok(())
     }
 
-    fn path_generic_args(
+    fn print_path_with_generic_args(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         args: &[GenericArg<'tcx>],
@@ -3229,7 +3232,7 @@ define_print! {
         // The args don't contain the self ty (as it has been erased) but the corresp.
         // generics do as the trait always has a self ty param. We need to offset.
         let args = &self.args[p.tcx().generics_of(self.def_id).parent_count - 1..];
-        p.path_generic_args(|p| write!(p, "{name}"), args)?;
+        p.print_path_with_generic_args(|p| write!(p, "{name}"), args)?;
         write!(p, " = ")?;
         self.term.print(p)?;
     }

compiler/rustc_symbol_mangling/src/legacy.rs

@@ -218,8 +218,8 @@ struct LegacySymbolMangler<'tcx> {
     path: SymbolPath,
 
     // When `true`, `finalize_pending_component` isn't used.
-    // This is needed when recursing into `path_qualified`,
-    // or `path_generic_args`, as any nested paths are
+    // This is needed when recursing into `print_path_with_qualified`,
+    // or `print_path_with_generic_args`, as any nested paths are
     // logically within one component.
     keep_within_component: bool,
 }
@@ -303,11 +303,12 @@ impl<'tcx> Printer<'tcx> for LegacySymbolMangler<'tcx> {
         Ok(())
     }
 
-    fn path_crate(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
+    fn print_crate_name(&mut self, cnum: CrateNum) -> Result<(), PrintError> {
         self.write_str(self.tcx.crate_name(cnum).as_str())?;
         Ok(())
     }
-    fn path_qualified(
+
+    fn print_path_with_qualified(
         &mut self,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
@@ -329,7 +330,7 @@ impl<'tcx> Printer<'tcx> for LegacySymbolMangler<'tcx> {
         }
     }
 
-    fn path_append_impl(
+    fn print_path_with_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         self_ty: Ty<'tcx>,
@@ -352,7 +353,8 @@ impl<'tcx> Printer<'tcx> for LegacySymbolMangler<'tcx> {
             trait_ref,
         )
     }
-    fn path_append(
+
+    fn print_path_with_simple(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         disambiguated_data: &DisambiguatedDefPathData,
@@ -375,7 +377,8 @@ impl<'tcx> Printer<'tcx> for LegacySymbolMangler<'tcx> {
 
         Ok(())
     }
-    fn path_generic_args(
+
+    fn print_path_with_generic_args(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
         args: &[GenericArg<'tcx>],