1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 use metadata::encoder;
13 use middle::ty::{ReSkolemized, ReVar};
14 use middle::ty::{BoundRegion, BrAnon, BrNamed};
15 use middle::ty::{BrFresh, ctxt};
16 use middle::ty::{mt, t, param_ty};
17 use middle::ty::{ReFree, ReScope, ReInfer, ReStatic, Region,
19 use middle::ty::{ty_bool, ty_char, ty_bot, ty_box, ty_struct, ty_enum};
20 use middle::ty::{ty_err, ty_str, ty_vec, ty_float, ty_bare_fn, ty_closure};
21 use middle::ty::{ty_nil, ty_param, ty_ptr, ty_rptr, ty_self, ty_tup};
22 use middle::ty::{ty_uniq, ty_trait, ty_int, ty_uint, ty_infer};
26 use std::strbuf::StrBuf;
29 use syntax::codemap::{Span, Pos};
30 use syntax::parse::token;
31 use syntax::print::pprust;
32 use syntax::{ast, ast_util};
33 use syntax::owned_slice::OwnedSlice;
35 /// Produces a string suitable for debugging output.
37 fn repr(&self, tcx: &ctxt) -> ~str;
40 /// Produces a string suitable for showing to the user.
41 pub trait UserString {
42 fn user_string(&self, tcx: &ctxt) -> ~str;
45 pub fn note_and_explain_region(cx: &ctxt,
49 match explain_region_and_span(cx, region) {
50 (ref str, Some(span)) => {
53 format!("{}{}{}", prefix, *str, suffix));
57 format!("{}{}{}", prefix, *str, suffix));
62 pub fn explain_region_and_span(cx: &ctxt, region: ty::Region)
63 -> (~str, Option<Span>) {
66 match cx.map.find(node_id) {
67 Some(ast_map::NodeBlock(ref blk)) => {
68 explain_span(cx, "block", blk.span)
70 Some(ast_map::NodeExpr(expr)) => {
72 ast::ExprCall(..) => explain_span(cx, "call", expr.span),
73 ast::ExprMethodCall(..) => {
74 explain_span(cx, "method call", expr.span)
76 ast::ExprMatch(..) => explain_span(cx, "match", expr.span),
77 _ => explain_span(cx, "expression", expr.span)
80 Some(ast_map::NodeStmt(stmt)) => {
81 explain_span(cx, "statement", stmt.span)
83 Some(ast_map::NodeItem(it)) if (match it.node {
84 ast::ItemFn(..) => true, _ => false}) => {
85 explain_span(cx, "function body", it.span)
88 // this really should not happen
89 (format!("unknown scope: {}. Please report a bug.", node_id),
96 let prefix = match fr.bound_region {
97 BrAnon(idx) => format!("the anonymous lifetime \\#{} defined on",
99 BrFresh(_) => format!("an anonymous lifetime defined on"),
100 _ => format!("the lifetime {} as defined on",
101 bound_region_ptr_to_str(cx, fr.bound_region))
104 match cx.map.find(fr.scope_id) {
105 Some(ast_map::NodeBlock(ref blk)) => {
106 let (msg, opt_span) = explain_span(cx, "block", blk.span);
107 (format!("{} {}", prefix, msg), opt_span)
109 Some(ast_map::NodeItem(it)) if match it.node {
110 ast::ItemImpl(..) => true, _ => false} => {
111 let (msg, opt_span) = explain_span(cx, "impl", it.span);
112 (format!("{} {}", prefix, msg), opt_span)
115 // this really should not happen
116 (format!("{} node {}", prefix, fr.scope_id), None)
121 ReStatic => { (~"the static lifetime", None) }
123 ReEmpty => { (~"the empty lifetime", None) }
125 // I believe these cases should not occur (except when debugging,
127 ty::ReInfer(_) | ty::ReEarlyBound(..) | ty::ReLateBound(..) => {
128 (format!("lifetime {:?}", region), None)
132 fn explain_span(cx: &ctxt, heading: &str, span: Span)
133 -> (~str, Option<Span>) {
134 let lo = cx.sess.codemap().lookup_char_pos_adj(span.lo);
135 (format!("the {} at {}:{}", heading,
136 lo.line, lo.col.to_uint()), Some(span))
140 pub fn bound_region_ptr_to_str(cx: &ctxt, br: BoundRegion) -> ~str {
141 bound_region_to_str(cx, "&", true, br)
144 pub fn bound_region_to_str(cx: &ctxt,
145 prefix: &str, space: bool,
146 br: BoundRegion) -> ~str {
147 let space_str = if space { " " } else { "" };
149 if cx.sess.verbose() {
150 return format!("{}{}{}", prefix, br.repr(cx), space_str);
154 BrNamed(_, name) => format!("{}'{}{}", prefix,
155 token::get_name(name), space_str),
156 BrAnon(_) => prefix.to_str(),
157 BrFresh(_) => prefix.to_str(),
161 // In general, if you are giving a region error message,
162 // you should use `explain_region()` or, better yet,
163 // `note_and_explain_region()`
164 pub fn region_ptr_to_str(cx: &ctxt, region: Region) -> ~str {
165 region_to_str(cx, "&", true, region)
168 pub fn region_to_str(cx: &ctxt, prefix: &str, space: bool, region: Region) -> ~str {
169 let space_str = if space { " " } else { "" };
171 if cx.sess.verbose() {
172 return format!("{}{}{}", prefix, region.repr(cx), space_str);
175 // These printouts are concise. They do not contain all the information
176 // the user might want to diagnose an error, but there is basically no way
177 // to fit that into a short string. Hence the recommendation to use
178 // `explain_region()` or `note_and_explain_region()`.
180 ty::ReScope(_) => prefix.to_str(),
181 ty::ReEarlyBound(_, _, name) => token::get_name(name).get().to_str(),
182 ty::ReLateBound(_, br) => bound_region_to_str(cx, prefix, space, br),
183 ty::ReFree(ref fr) => bound_region_to_str(cx, prefix, space, fr.bound_region),
184 ty::ReInfer(ReSkolemized(_, br)) => {
185 bound_region_to_str(cx, prefix, space, br)
187 ty::ReInfer(ReVar(_)) => prefix.to_str(),
188 ty::ReStatic => format!("{}'static{}", prefix, space_str),
189 ty::ReEmpty => format!("{}'<empty>{}", prefix, space_str)
193 pub fn mutability_to_str(m: ast::Mutability) -> ~str {
195 ast::MutMutable => ~"mut ",
196 ast::MutImmutable => ~"",
200 pub fn mt_to_str(cx: &ctxt, m: &mt) -> ~str {
201 format!("{}{}", mutability_to_str(m.mutbl), ty_to_str(cx, m.ty))
204 pub fn trait_store_to_str(cx: &ctxt, s: ty::TraitStore) -> ~str {
206 ty::UniqTraitStore => ~"~",
207 ty::RegionTraitStore(r, m) => {
208 format!("{}{}", region_ptr_to_str(cx, r), mutability_to_str(m))
213 pub fn vec_map_to_str<T>(ts: &[T], f: |t: &T| -> ~str) -> ~str {
214 let tstrs = ts.iter().map(f).collect::<Vec<~str>>();
215 format!("[{}]", tstrs.connect(", "))
218 pub fn fn_sig_to_str(cx: &ctxt, typ: &ty::FnSig) -> ~str {
219 format!("fn{}{} -> {}",
225 pub fn trait_ref_to_str(cx: &ctxt, trait_ref: &ty::TraitRef) -> ~str {
226 trait_ref.user_string(cx)
229 pub fn ty_to_str(cx: &ctxt, typ: t) -> ~str {
230 fn fn_input_to_str(cx: &ctxt, input: ty::t) -> ~str {
233 fn bare_fn_to_str(cx: &ctxt,
234 fn_style: ast::FnStyle,
236 ident: Option<ast::Ident>,
239 let mut s = if abi == abi::Rust {
242 StrBuf::from_owned_str(format!("extern {} ", abi.to_str()))
248 s.push_str(fn_style.to_str());
258 s.push_str(token::get_ident(i).get());
263 push_sig_to_str(cx, &mut s, '(', ')', sig);
268 fn closure_to_str(cx: &ctxt, cty: &ty::ClosureTy) -> ~str {
270 (cty.sigil, cty.onceness) == (ast::OwnedSigil, ast::Once);
271 let is_borrowed_closure = cty.sigil == ast::BorrowedSigil;
273 let mut s = if is_proc || is_borrowed_closure {
276 StrBuf::from_owned_str(cty.sigil.to_str())
279 match (cty.sigil, cty.region) {
280 (ast::ManagedSigil, ty::ReStatic) |
281 (ast::OwnedSigil, ty::ReStatic) => {}
284 s.push_str(region_to_str(cx, "", true, region));
291 s.push_str(cty.fn_style.to_str());
302 s.push_str(cty.onceness.to_str());
307 if !is_borrowed_closure {
312 if !is_borrowed_closure {
313 // Print bounds before `fn` if this is not a borrowed closure.
314 if !cty.bounds.is_empty() {
316 s.push_str(cty.bounds.repr(cx));
319 push_sig_to_str(cx, &mut s, '(', ')', &cty.sig);
321 // Print bounds after the signature if this is a borrowed closure.
322 push_sig_to_str(cx, &mut s, '|', '|', &cty.sig);
324 if is_borrowed_closure {
325 if !cty.bounds.is_empty() {
327 s.push_str(cty.bounds.repr(cx));
335 fn push_sig_to_str(cx: &ctxt,
341 let strs: Vec<~str> = sig.inputs.iter().map(|a| fn_input_to_str(cx, *a)).collect();
342 s.push_str(strs.connect(", "));
348 if ty::get(sig.output).sty != ty_nil {
350 if ty::type_is_bot(sig.output) {
353 s.push_str(ty_to_str(cx, sig.output));
358 // if there is an id, print that instead of the structural type:
359 /*for def_id in ty::type_def_id(typ).iter() {
360 // note that this typedef cannot have type parameters
361 return ty::item_path_str(cx, *def_id);
364 // pretty print the structural type representation:
365 return match ty::get(typ).sty {
370 ty_int(ast::TyI) => ~"int",
371 ty_int(t) => ast_util::int_ty_to_str(t),
372 ty_uint(ast::TyU) => ~"uint",
373 ty_uint(t) => ast_util::uint_ty_to_str(t),
374 ty_float(t) => ast_util::float_ty_to_str(t),
375 ty_box(typ) => ~"@" + ty_to_str(cx, typ),
376 ty_uniq(typ) => ~"~" + ty_to_str(cx, typ),
377 ty_ptr(ref tm) => ~"*" + mt_to_str(cx, tm),
378 ty_rptr(r, ref tm) => {
379 region_ptr_to_str(cx, r) + mt_to_str(cx, tm)
381 ty_tup(ref elems) => {
382 let strs: Vec<~str> = elems.iter().map(|elem| ty_to_str(cx, *elem)).collect();
383 ~"(" + strs.connect(",") + ")"
385 ty_closure(ref f) => {
386 closure_to_str(cx, *f)
388 ty_bare_fn(ref f) => {
389 bare_fn_to_str(cx, f.fn_style, f.abi, None, &f.sig)
391 ty_infer(infer_ty) => infer_ty.to_str(),
392 ty_err => ~"[type error]",
393 ty_param(param_ty {idx: id, def_id: did}) => {
394 let ident = match cx.ty_param_defs.borrow().find(&did.node) {
395 Some(def) => token::get_ident(def.ident).get().to_str(),
396 // This should not happen...
397 None => format!("BUG[{:?}]", id)
399 if !cx.sess.verbose() {
402 format!("{}:{:?}", ident, did)
405 ty_self(..) => ~"Self",
406 ty_enum(did, ref substs) | ty_struct(did, ref substs) => {
407 let base = ty::item_path_str(cx, did);
411 substs.tps.as_slice(),
415 ty_trait(~ty::TyTrait {
416 def_id: did, ref substs, store, ref bounds
418 let base = ty::item_path_str(cx, did);
419 let ty = parameterized(cx, base, &substs.regions,
420 substs.tps.as_slice(), did, true);
421 let bound_sep = if bounds.is_empty() { "" } else { ":" };
422 let bound_str = bounds.repr(cx);
423 format!("{}{}{}{}", trait_store_to_str(cx, store), ty, bound_sep, bound_str)
427 ty::VstoreFixed(n) => {
428 format!("[{}, .. {}]", ty_to_str(cx, ty), n)
431 format!("{}[{}]", vs.repr(cx), ty_to_str(cx, ty))
437 ty::VstoreFixed(n) => format!("str/{}", n),
438 ty::VstoreUniq => ~"~str",
439 ty::VstoreSlice(r, ()) => format!("{}str", region_ptr_to_str(cx, r))
445 pub fn parameterized(cx: &ctxt,
447 regions: &ty::RegionSubsts,
450 is_trait: bool) -> ~str {
452 let mut strs = Vec::new();
454 ty::ErasedRegions => { }
455 ty::NonerasedRegions(ref regions) => {
456 for &r in regions.iter() {
457 strs.push(region_to_str(cx, "", false, r))
462 let generics = if is_trait {
463 ty::lookup_trait_def(cx, did).generics.clone()
465 ty::lookup_item_type(cx, did).generics
467 let ty_params = generics.type_param_defs();
468 let has_defaults = ty_params.last().map_or(false, |def| def.default.is_some());
469 let num_defaults = if has_defaults {
470 // We should have a borrowed version of substs instead of cloning.
471 let mut substs = ty::substs {
472 tps: Vec::from_slice(tps),
473 regions: regions.clone(),
476 ty_params.iter().zip(tps.iter()).rev().take_while(|&(def, &actual)| {
479 Some(default) => ty::subst(cx, &substs, default) == actual,
487 for t in tps.slice_to(tps.len() - num_defaults).iter() {
488 strs.push(ty_to_str(cx, *t))
492 format!("{}<{}>", base, strs.connect(","))
498 pub fn ty_to_short_str(cx: &ctxt, typ: t) -> ~str {
499 let mut s = encoder::encoded_ty(cx, typ);
500 if s.len() >= 32u { s = s.slice(0u, 32u).to_owned(); }
504 impl<T:Repr> Repr for Option<T> {
505 fn repr(&self, tcx: &ctxt) -> ~str {
508 &Some(ref t) => t.repr(tcx),
513 impl<T:Repr,U:Repr> Repr for Result<T,U> {
514 fn repr(&self, tcx: &ctxt) -> ~str {
516 &Ok(ref t) => t.repr(tcx),
517 &Err(ref u) => format!("Err({})", u.repr(tcx))
523 fn repr(&self, _tcx: &ctxt) -> ~str {
528 impl<T:Repr> Repr for @T {
529 fn repr(&self, tcx: &ctxt) -> ~str {
534 impl<T:Repr> Repr for ~T {
535 fn repr(&self, tcx: &ctxt) -> ~str {
540 fn repr_vec<T:Repr>(tcx: &ctxt, v: &[T]) -> ~str {
541 vec_map_to_str(v, |t| t.repr(tcx))
544 impl<'a, T:Repr> Repr for &'a [T] {
545 fn repr(&self, tcx: &ctxt) -> ~str {
550 impl<T:Repr> Repr for OwnedSlice<T> {
551 fn repr(&self, tcx: &ctxt) -> ~str {
552 repr_vec(tcx, self.as_slice())
556 // This is necessary to handle types like Option<~[T]>, for which
557 // autoderef cannot convert the &[T] handler
558 impl<T:Repr> Repr for Vec<T> {
559 fn repr(&self, tcx: &ctxt) -> ~str {
560 repr_vec(tcx, self.as_slice())
564 impl Repr for ty::TypeParameterDef {
565 fn repr(&self, tcx: &ctxt) -> ~str {
566 format!("TypeParameterDef({:?}, {})",
568 self.bounds.repr(tcx))
572 impl Repr for ty::RegionParameterDef {
573 fn repr(&self, _tcx: &ctxt) -> ~str {
574 format!("RegionParameterDef({}, {:?})",
575 token::get_name(self.name),
580 impl Repr for ty::t {
581 fn repr(&self, tcx: &ctxt) -> ~str {
582 ty_to_str(tcx, *self)
586 impl Repr for ty::substs {
587 fn repr(&self, tcx: &ctxt) -> ~str {
588 format!("substs(regions={}, self_ty={}, tps={})",
589 self.regions.repr(tcx),
590 self.self_ty.repr(tcx),
595 impl Repr for ty::RegionSubsts {
596 fn repr(&self, tcx: &ctxt) -> ~str {
598 ty::ErasedRegions => ~"erased",
599 ty::NonerasedRegions(ref regions) => regions.repr(tcx)
604 impl Repr for ty::ParamBounds {
605 fn repr(&self, tcx: &ctxt) -> ~str {
606 let mut res = Vec::new();
607 for b in self.builtin_bounds.iter() {
609 ty::BoundStatic => ~"'static",
610 ty::BoundSend => ~"Send",
611 ty::BoundSized => ~"Sized",
612 ty::BoundCopy => ~"Pod",
613 ty::BoundShare => ~"Share",
616 for t in self.trait_bounds.iter() {
617 res.push(t.repr(tcx));
623 impl Repr for ty::TraitRef {
624 fn repr(&self, tcx: &ctxt) -> ~str {
625 trait_ref_to_str(tcx, self)
629 impl Repr for ast::Expr {
630 fn repr(&self, _tcx: &ctxt) -> ~str {
631 format!("expr({}: {})", self.id, pprust::expr_to_str(self))
635 impl Repr for ast::Item {
636 fn repr(&self, tcx: &ctxt) -> ~str {
637 format!("item({})", tcx.map.node_to_str(self.id))
641 impl Repr for ast::Stmt {
642 fn repr(&self, _tcx: &ctxt) -> ~str {
643 format!("stmt({}: {})",
644 ast_util::stmt_id(self),
645 pprust::stmt_to_str(self))
649 impl Repr for ast::Pat {
650 fn repr(&self, _tcx: &ctxt) -> ~str {
651 format!("pat({}: {})",
653 pprust::pat_to_str(self))
657 impl Repr for ty::BoundRegion {
658 fn repr(&self, tcx: &ctxt) -> ~str {
660 ty::BrAnon(id) => format!("BrAnon({})", id),
661 ty::BrNamed(id, name) => format!("BrNamed({}, {})",
663 token::get_name(name)),
664 ty::BrFresh(id) => format!("BrFresh({})", id),
669 impl Repr for ty::Region {
670 fn repr(&self, tcx: &ctxt) -> ~str {
672 ty::ReEarlyBound(id, index, name) => {
673 format!("ReEarlyBound({}, {}, {})",
674 id, index, token::get_name(name))
677 ty::ReLateBound(binder_id, ref bound_region) => {
678 format!("ReLateBound({}, {})",
679 binder_id, bound_region.repr(tcx))
682 ty::ReFree(ref fr) => {
683 format!("ReFree({}, {})",
685 fr.bound_region.repr(tcx))
689 format!("ReScope({})", id)
696 ty::ReInfer(ReVar(ref vid)) => {
697 format!("ReInfer({})", vid.id)
700 ty::ReInfer(ReSkolemized(id, ref bound_region)) => {
701 format!("re_skolemized({}, {})",
702 id, bound_region.repr(tcx))
712 impl Repr for ast::DefId {
713 fn repr(&self, tcx: &ctxt) -> ~str {
714 // Unfortunately, there seems to be no way to attempt to print
715 // a path for a def-id, so I'll just make a best effort for now
716 // and otherwise fallback to just printing the crate/node pair
717 if self.krate == ast::LOCAL_CRATE {
719 match tcx.map.find(self.node) {
720 Some(ast_map::NodeItem(..)) |
721 Some(ast_map::NodeForeignItem(..)) |
722 Some(ast_map::NodeMethod(..)) |
723 Some(ast_map::NodeTraitMethod(..)) |
724 Some(ast_map::NodeVariant(..)) |
725 Some(ast_map::NodeStructCtor(..)) => {
726 return format!("{:?}:{}",
728 ty::item_path_str(tcx, *self));
734 return format!("{:?}", *self);
738 impl Repr for ty::ty_param_bounds_and_ty {
739 fn repr(&self, tcx: &ctxt) -> ~str {
740 format!("ty_param_bounds_and_ty \\{generics: {}, ty: {}\\}",
741 self.generics.repr(tcx),
746 impl Repr for ty::Generics {
747 fn repr(&self, tcx: &ctxt) -> ~str {
748 format!("Generics(type_param_defs: {}, region_param_defs: {})",
749 self.type_param_defs().repr(tcx),
750 self.region_param_defs().repr(tcx))
754 impl Repr for ty::ItemVariances {
755 fn repr(&self, tcx: &ctxt) -> ~str {
756 format!("IterVariances(self_param={}, type_params={}, region_params={})",
757 self.self_param.repr(tcx),
758 self.type_params.repr(tcx),
759 self.region_params.repr(tcx))
763 impl Repr for ty::Variance {
764 fn repr(&self, _: &ctxt) -> ~str {
765 self.to_str().to_owned()
769 impl Repr for ty::Method {
770 fn repr(&self, tcx: &ctxt) -> ~str {
771 format!("method(ident: {}, generics: {}, fty: {}, \
772 explicit_self: {}, vis: {}, def_id: {})",
773 self.ident.repr(tcx),
774 self.generics.repr(tcx),
776 self.explicit_self.repr(tcx),
778 self.def_id.repr(tcx))
782 impl Repr for ast::Name {
783 fn repr(&self, _tcx: &ctxt) -> ~str {
784 token::get_name(*self).get().to_str()
788 impl Repr for ast::Ident {
789 fn repr(&self, _tcx: &ctxt) -> ~str {
790 token::get_ident(*self).get().to_str()
794 impl Repr for ast::ExplicitSelf_ {
795 fn repr(&self, _tcx: &ctxt) -> ~str {
796 format!("{:?}", *self)
800 impl Repr for ast::Visibility {
801 fn repr(&self, _tcx: &ctxt) -> ~str {
802 format!("{:?}", *self)
806 impl Repr for ty::BareFnTy {
807 fn repr(&self, tcx: &ctxt) -> ~str {
808 format!("BareFnTy \\{fn_style: {:?}, abi: {}, sig: {}\\}",
815 impl Repr for ty::FnSig {
816 fn repr(&self, tcx: &ctxt) -> ~str {
817 fn_sig_to_str(tcx, self)
821 impl Repr for typeck::MethodCallee {
822 fn repr(&self, tcx: &ctxt) -> ~str {
823 format!("MethodCallee \\{origin: {}, ty: {}, {}\\}",
824 self.origin.repr(tcx),
826 self.substs.repr(tcx))
830 impl Repr for typeck::MethodOrigin {
831 fn repr(&self, tcx: &ctxt) -> ~str {
833 &typeck::MethodStatic(def_id) => {
834 format!("MethodStatic({})", def_id.repr(tcx))
836 &typeck::MethodParam(ref p) => {
839 &typeck::MethodObject(ref p) => {
846 impl Repr for typeck::MethodParam {
847 fn repr(&self, tcx: &ctxt) -> ~str {
848 format!("MethodParam({},{:?},{:?},{:?})",
849 self.trait_id.repr(tcx),
856 impl Repr for typeck::MethodObject {
857 fn repr(&self, tcx: &ctxt) -> ~str {
858 format!("MethodObject({},{:?},{:?})",
859 self.trait_id.repr(tcx),
866 impl Repr for ty::RegionVid {
867 fn repr(&self, _tcx: &ctxt) -> ~str {
868 format!("{:?}", *self)
872 impl Repr for ty::TraitStore {
873 fn repr(&self, tcx: &ctxt) -> ~str {
874 trait_store_to_str(tcx, *self)
878 impl Repr for ty::Vstore {
879 fn repr(&self, tcx: &ctxt) -> ~str {
881 ty::VstoreFixed(n) => format!("{}", n),
882 ty::VstoreUniq => ~"~",
883 ty::VstoreSlice(r, m) => {
884 format!("{}{}", region_ptr_to_str(tcx, r), mutability_to_str(m))
890 impl Repr for ty::Vstore<()> {
891 fn repr(&self, tcx: &ctxt) -> ~str {
893 ty::VstoreFixed(n) => format!("{}", n),
894 ty::VstoreUniq => ~"~",
895 ty::VstoreSlice(r, ()) => region_ptr_to_str(tcx, r)
900 impl Repr for ty::BuiltinBound {
901 fn repr(&self, _tcx: &ctxt) -> ~str {
902 format!("{:?}", *self)
906 impl UserString for ty::BuiltinBound {
907 fn user_string(&self, _tcx: &ctxt) -> ~str {
909 ty::BoundStatic => ~"'static",
910 ty::BoundSend => ~"Send",
911 ty::BoundSized => ~"Sized",
912 ty::BoundCopy => ~"Pod",
913 ty::BoundShare => ~"Share",
918 impl Repr for ty::BuiltinBounds {
919 fn repr(&self, tcx: &ctxt) -> ~str {
920 self.user_string(tcx)
925 fn repr(&self, tcx: &ctxt) -> ~str {
926 tcx.sess.codemap().span_to_str(*self)
930 impl<A:UserString> UserString for @A {
931 fn user_string(&self, tcx: &ctxt) -> ~str {
932 let this: &A = &**self;
933 this.user_string(tcx)
937 impl UserString for ty::BuiltinBounds {
938 fn user_string(&self, tcx: &ctxt) -> ~str {
939 if self.is_empty() { ~"<no-bounds>" } else {
940 let mut result = Vec::new();
941 for bb in self.iter() {
942 result.push(bb.user_string(tcx));
949 impl UserString for ty::TraitRef {
950 fn user_string(&self, tcx: &ctxt) -> ~str {
951 let base = ty::item_path_str(tcx, self.def_id);
952 if tcx.sess.verbose() && self.substs.self_ty.is_some() {
953 let mut all_tps = self.substs.tps.clone();
954 for &t in self.substs.self_ty.iter() { all_tps.push(t); }
955 parameterized(tcx, base, &self.substs.regions,
956 all_tps.as_slice(), self.def_id, true)
958 parameterized(tcx, base, &self.substs.regions,
959 self.substs.tps.as_slice(), self.def_id, true)
964 impl UserString for ty::t {
965 fn user_string(&self, tcx: &ctxt) -> ~str {
966 ty_to_str(tcx, *self)
970 impl UserString for ast::Ident {
971 fn user_string(&self, _tcx: &ctxt) -> ~str {
972 token::get_name(self.name).get().to_owned()
976 impl Repr for abi::Abi {
977 fn repr(&self, _tcx: &ctxt) -> ~str {
982 impl UserString for abi::Abi {
983 fn user_string(&self, _tcx: &ctxt) -> ~str {
988 impl Repr for ty::UpvarId {
989 fn repr(&self, tcx: &ctxt) -> ~str {
990 format!("UpvarId({};`{}`;{})",
992 ty::local_var_name_str(tcx, self.var_id),
993 self.closure_expr_id)
997 impl Repr for ast::Mutability {
998 fn repr(&self, _tcx: &ctxt) -> ~str {
999 format!("{:?}", *self)
1003 impl Repr for ty::BorrowKind {
1004 fn repr(&self, _tcx: &ctxt) -> ~str {
1005 format!("{:?}", *self)
1009 impl Repr for ty::UpvarBorrow {
1010 fn repr(&self, tcx: &ctxt) -> ~str {
1011 format!("UpvarBorrow({}, {})",
1012 self.kind.repr(tcx),
1013 self.region.repr(tcx))