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-rw-r--r--crates/hir_ty/src/display.rs113
1 files changed, 68 insertions, 45 deletions
diff --git a/crates/hir_ty/src/display.rs b/crates/hir_ty/src/display.rs
index 822ef4477..14e8c0633 100644
--- a/crates/hir_ty/src/display.rs
+++ b/crates/hir_ty/src/display.rs
@@ -26,6 +26,20 @@ pub trait HirDisplay {
26 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError>; 26 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError>;
27 27
28 /// Returns a `Display`able type that is human-readable. 28 /// Returns a `Display`able type that is human-readable.
29 fn into_displayable<'a>(
30 &'a self,
31 db: &'a dyn HirDatabase,
32 max_size: Option<usize>,
33 omit_verbose_types: bool,
34 display_target: DisplayTarget,
35 ) -> HirDisplayWrapper<'a, Self>
36 where
37 Self: Sized,
38 {
39 HirDisplayWrapper { db, t: self, max_size, omit_verbose_types, display_target }
40 }
41
42 /// Returns a `Display`able type that is human-readable.
29 /// Use this for showing types to the user (e.g. diagnostics) 43 /// Use this for showing types to the user (e.g. diagnostics)
30 fn display<'a>(&'a self, db: &'a dyn HirDatabase) -> HirDisplayWrapper<'a, Self> 44 fn display<'a>(&'a self, db: &'a dyn HirDatabase) -> HirDisplayWrapper<'a, Self>
31 where 45 where
@@ -140,7 +154,7 @@ impl<'a> HirFormatter<'a> {
140} 154}
141 155
142#[derive(Clone, Copy)] 156#[derive(Clone, Copy)]
143enum DisplayTarget { 157pub enum DisplayTarget {
144 /// Display types for inlays, doc popups, autocompletion, etc... 158 /// Display types for inlays, doc popups, autocompletion, etc...
145 /// Showing `{unknown}` or not qualifying paths is fine here. 159 /// Showing `{unknown}` or not qualifying paths is fine here.
146 /// There's no reason for this to fail. 160 /// There's no reason for this to fail.
@@ -232,32 +246,32 @@ impl HirDisplay for ApplicationTy {
232 TypeCtor::Str => write!(f, "str")?, 246 TypeCtor::Str => write!(f, "str")?,
233 TypeCtor::Slice => { 247 TypeCtor::Slice => {
234 let t = self.parameters.as_single(); 248 let t = self.parameters.as_single();
235 write!(f, "[{}]", t.display(f.db))?; 249 write!(f, "[")?;
250 t.hir_fmt(f)?;
251 write!(f, "]")?;
236 } 252 }
237 TypeCtor::Array => { 253 TypeCtor::Array => {
238 let t = self.parameters.as_single(); 254 let t = self.parameters.as_single();
239 write!(f, "[{}; _]", t.display(f.db))?; 255 write!(f, "[")?;
256 t.hir_fmt(f)?;
257 write!(f, "; _]")?;
240 } 258 }
241 TypeCtor::RawPtr(m) => { 259 TypeCtor::RawPtr(m) => {
242 let t = self.parameters.as_single(); 260 let t = self.parameters.as_single();
243 let ty_display = t.display(f.db);
244 261
245 write!(f, "*{}", m.as_keyword_for_ptr())?; 262 write!(f, "*{}", m.as_keyword_for_ptr())?;
246 if matches!(t, Ty::Dyn(predicates) if predicates.len() > 1) { 263 if matches!(t, Ty::Dyn(predicates) if predicates.len() > 1) {
247 write!(f, "(")?; 264 write!(f, "(")?;
248 write!(f, "{}", ty_display)?; 265 t.hir_fmt(f)?;
249 write!(f, ")")?; 266 write!(f, ")")?;
250 } else { 267 } else {
251 write!(f, "{}", ty_display)?; 268 t.hir_fmt(f)?;
252 } 269 }
253 } 270 }
254 TypeCtor::Ref(m) => { 271 TypeCtor::Ref(m) => {
255 let t = self.parameters.as_single(); 272 let t = self.parameters.as_single();
256 let ty_display = if f.omit_verbose_types() { 273 let ty_display =
257 t.display_truncated(f.db, f.max_size) 274 t.into_displayable(f.db, f.max_size, f.omit_verbose_types, f.display_target);
258 } else {
259 t.display(f.db)
260 };
261 275
262 write!(f, "&{}", m.as_keyword_for_ref())?; 276 write!(f, "&{}", m.as_keyword_for_ref())?;
263 if matches!(t, Ty::Dyn(predicates) if predicates.len() > 1) { 277 if matches!(t, Ty::Dyn(predicates) if predicates.len() > 1) {
@@ -272,7 +286,9 @@ impl HirDisplay for ApplicationTy {
272 TypeCtor::Tuple { .. } => { 286 TypeCtor::Tuple { .. } => {
273 let ts = &self.parameters; 287 let ts = &self.parameters;
274 if ts.len() == 1 { 288 if ts.len() == 1 {
275 write!(f, "({},)", ts[0].display(f.db))?; 289 write!(f, "(")?;
290 ts[0].hir_fmt(f)?;
291 write!(f, ",)")?;
276 } else { 292 } else {
277 write!(f, "(")?; 293 write!(f, "(")?;
278 f.write_joined(&*ts.0, ", ")?; 294 f.write_joined(&*ts.0, ", ")?;
@@ -293,11 +309,12 @@ impl HirDisplay for ApplicationTy {
293 write!(f, ")")?; 309 write!(f, ")")?;
294 let ret = sig.ret(); 310 let ret = sig.ret();
295 if *ret != Ty::unit() { 311 if *ret != Ty::unit() {
296 let ret_display = if f.omit_verbose_types() { 312 let ret_display = ret.into_displayable(
297 ret.display_truncated(f.db, f.max_size) 313 f.db,
298 } else { 314 f.max_size,
299 ret.display(f.db) 315 f.omit_verbose_types,
300 }; 316 f.display_target,
317 );
301 write!(f, " -> {}", ret_display)?; 318 write!(f, " -> {}", ret_display)?;
302 } 319 }
303 } 320 }
@@ -329,15 +346,13 @@ impl HirDisplay for ApplicationTy {
329 write!(f, ")")?; 346 write!(f, ")")?;
330 let ret = sig.ret(); 347 let ret = sig.ret();
331 if *ret != Ty::unit() { 348 if *ret != Ty::unit() {
332 let ret_display = if f.omit_verbose_types() { 349 let ret_display = ret.into_displayable(
333 ret.display_truncated(f.db, f.max_size) 350 f.db,
334 } else { 351 f.max_size,
335 if f.display_target.is_test() { 352 f.omit_verbose_types,
336 ret.display_test(f.db) 353 f.display_target,
337 } else { 354 );
338 ret.display(f.db) 355
339 }
340 };
341 write!(f, " -> {}", ret_display)?; 356 write!(f, " -> {}", ret_display)?;
342 } 357 }
343 } 358 }
@@ -473,15 +488,12 @@ impl HirDisplay for ApplicationTy {
473 write!(f, "|")?; 488 write!(f, "|")?;
474 }; 489 };
475 490
476 let ret_display = if f.omit_verbose_types() { 491 let ret_display = sig.ret().into_displayable(
477 sig.ret().display_truncated(f.db, f.max_size) 492 f.db,
478 } else { 493 f.max_size,
479 if f.display_target.is_test() { 494 f.omit_verbose_types,
480 sig.ret().display_test(f.db) 495 f.display_target,
481 } else { 496 );
482 sig.ret().display(f.db)
483 }
484 };
485 write!(f, " -> {}", ret_display)?; 497 write!(f, " -> {}", ret_display)?;
486 } else { 498 } else {
487 write!(f, "{{closure}}")?; 499 write!(f, "{{closure}}")?;
@@ -499,7 +511,13 @@ impl HirDisplay for ProjectionTy {
499 } 511 }
500 512
501 let trait_ = f.db.trait_data(self.trait_(f.db)); 513 let trait_ = f.db.trait_data(self.trait_(f.db));
502 write!(f, "<{} as {}", self.parameters[0].display(f.db), trait_.name)?; 514 let first_parameter = self.parameters[0].into_displayable(
515 f.db,
516 f.max_size,
517 f.omit_verbose_types,
518 f.display_target,
519 );
520 write!(f, "<{} as {}", first_parameter, trait_.name)?;
503 if self.parameters.len() > 1 { 521 if self.parameters.len() > 1 {
504 write!(f, "<")?; 522 write!(f, "<")?;
505 f.write_joined(&self.parameters[1..], ", ")?; 523 f.write_joined(&self.parameters[1..], ", ")?;
@@ -678,10 +696,10 @@ impl HirDisplay for GenericPredicate {
678 projection_pred.projection_ty.trait_ref(f.db).hir_fmt_ext(f, true)?; 696 projection_pred.projection_ty.trait_ref(f.db).hir_fmt_ext(f, true)?;
679 write!( 697 write!(
680 f, 698 f,
681 ">::{} = {}", 699 ">::{} = ",
682 f.db.type_alias_data(projection_pred.projection_ty.associated_ty).name, 700 f.db.type_alias_data(projection_pred.projection_ty.associated_ty).name,
683 projection_pred.ty.display(f.db)
684 )?; 701 )?;
702 projection_pred.ty.hir_fmt(f)?;
685 } 703 }
686 GenericPredicate::Error => write!(f, "{{error}}")?, 704 GenericPredicate::Error => write!(f, "{{error}}")?,
687 } 705 }
@@ -692,13 +710,18 @@ impl HirDisplay for GenericPredicate {
692impl HirDisplay for Obligation { 710impl HirDisplay for Obligation {
693 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError> { 711 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError> {
694 match self { 712 match self {
695 Obligation::Trait(tr) => write!(f, "Implements({})", tr.display(f.db)), 713 Obligation::Trait(tr) => {
696 Obligation::Projection(proj) => write!( 714 write!(f, "Implements(")?;
697 f, 715 tr.hir_fmt(f)?;
698 "Normalize({} => {})", 716 write!(f, ")")
699 proj.projection_ty.display(f.db), 717 }
700 proj.ty.display(f.db) 718 Obligation::Projection(proj) => {
701 ), 719 write!(f, "Normalize(")?;
720 proj.projection_ty.hir_fmt(f)?;
721 write!(f, " => ")?;
722 proj.ty.hir_fmt(f)?;
723 write!(f, ")")
724 }
702 } 725 }
703 } 726 }
704} 727}