rust/src/librustc/util/ppaux.rs

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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use middle::def;
use middle::subst;
use middle::subst::{VecPerParamSpace,Subst};
use middle::ty::{ReSkolemized, ReVar};
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use middle::ty::{BoundRegion, BrAnon, BrNamed};
use middle::ty::{ReEarlyBound, BrFresh, ctxt};
use middle::ty::{mt, t, ParamTy};
use middle::ty::{ReFree, ReScope, ReInfer, ReStatic, Region, ReEmpty};
use middle::ty::{ty_bool, ty_char, ty_bot, ty_box, ty_struct, ty_enum};
use middle::ty::{ty_err, ty_str, ty_vec, ty_float, ty_bare_fn, ty_closure};
use middle::ty::{ty_nil, ty_param, ty_ptr, ty_rptr, ty_tup};
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use middle::ty::{ty_uniq, ty_trait, ty_int, ty_uint, ty_infer};
use middle::ty;
use middle::typeck;
use middle::typeck::infer;
use middle::typeck::infer::unify;
use VV = middle::typeck::infer::unify::VarValue;
use middle::typeck::infer::region_inference;
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use std::rc::Rc;
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use std::gc::Gc;
use syntax::abi;
use syntax::ast_map;
use syntax::codemap::{Span, Pos};
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use syntax::parse::token;
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use syntax::print::pprust;
use syntax::{ast, ast_util};
use syntax::owned_slice::OwnedSlice;
/// Produces a string suitable for debugging output.
pub trait Repr {
fn repr(&self, tcx: &ctxt) -> String;
}
/// Produces a string suitable for showing to the user.
pub trait UserString {
fn user_string(&self, tcx: &ctxt) -> String;
}
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pub fn note_and_explain_region(cx: &ctxt,
prefix: &str,
region: ty::Region,
suffix: &str) {
match explain_region_and_span(cx, region) {
(ref str, Some(span)) => {
cx.sess.span_note(
span,
format!("{}{}{}", prefix, *str, suffix).as_slice());
}
(ref str, None) => {
cx.sess.note(
format!("{}{}{}", prefix, *str, suffix).as_slice());
}
}
}
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pub fn explain_region_and_span(cx: &ctxt, region: ty::Region)
-> (String, Option<Span>) {
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return match region {
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ReScope(node_id) => {
match cx.map.find(node_id) {
Some(ast_map::NodeBlock(ref blk)) => {
explain_span(cx, "block", blk.span)
}
Some(ast_map::NodeExpr(expr)) => {
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match expr.node {
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ast::ExprCall(..) => explain_span(cx, "call", expr.span),
ast::ExprMethodCall(..) => {
explain_span(cx, "method call", expr.span)
},
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ast::ExprMatch(..) => explain_span(cx, "match", expr.span),
_ => explain_span(cx, "expression", expr.span)
}
}
Some(ast_map::NodeStmt(stmt)) => {
explain_span(cx, "statement", stmt.span)
}
Some(ast_map::NodeItem(it)) if (match it.node {
ast::ItemFn(..) => true, _ => false}) => {
explain_span(cx, "function body", it.span)
}
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Some(_) | None => {
// this really should not happen
(format!("unknown scope: {}. Please report a bug.", node_id), None)
}
}
}
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ReFree(ref fr) => {
let prefix = match fr.bound_region {
BrAnon(idx) => {
format!("the anonymous lifetime #{} defined on", idx + 1)
}
BrFresh(_) => "an anonymous lifetime defined on".to_string(),
_ => {
format!("the lifetime {} as defined on",
bound_region_ptr_to_string(cx, fr.bound_region))
}
};
match cx.map.find(fr.scope_id) {
Some(ast_map::NodeBlock(ref blk)) => {
let (msg, opt_span) = explain_span(cx, "block", blk.span);
(format!("{} {}", prefix, msg), opt_span)
}
Some(ast_map::NodeItem(it)) if match it.node {
ast::ItemImpl(..) => true, _ => false} => {
let (msg, opt_span) = explain_span(cx, "impl", it.span);
(format!("{} {}", prefix, msg), opt_span)
}
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Some(_) | None => {
// this really should not happen
(format!("{} node {}", prefix, fr.scope_id), None)
}
}
}
ReStatic => { ("the static lifetime".to_string(), None) }
ReEmpty => { ("the empty lifetime".to_string(), None) }
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ReEarlyBound(_, _, _, name) => {
(format!("{}", token::get_name(name)), None)
}
// I believe these cases should not occur (except when debugging,
// perhaps)
ty::ReInfer(_) | ty::ReLateBound(..) => {
(format!("lifetime {:?}", region), None)
}
};
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fn explain_span(cx: &ctxt, heading: &str, span: Span)
-> (String, Option<Span>) {
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let lo = cx.sess.codemap().lookup_char_pos_adj(span.lo);
(format!("the {} at {}:{}", heading, lo.line, lo.col.to_uint()),
Some(span))
}
}
pub fn bound_region_ptr_to_string(cx: &ctxt, br: BoundRegion) -> String {
bound_region_to_string(cx, "", false, br)
}
pub fn bound_region_to_string(cx: &ctxt,
prefix: &str, space: bool,
br: BoundRegion) -> String {
let space_str = if space { " " } else { "" };
if cx.sess.verbose() {
return format!("{}{}{}", prefix, br.repr(cx), space_str)
}
match br {
BrNamed(_, name) => {
format!("{}{}{}", prefix, token::get_name(name), space_str)
}
BrAnon(_) => prefix.to_string(),
BrFresh(_) => prefix.to_string(),
}
}
// In general, if you are giving a region error message,
// you should use `explain_region()` or, better yet,
// `note_and_explain_region()`
pub fn region_ptr_to_string(cx: &ctxt, region: Region) -> String {
region_to_string(cx, "&", true, region)
}
pub fn region_to_string(cx: &ctxt, prefix: &str, space: bool, region: Region) -> String {
let space_str = if space { " " } else { "" };
if cx.sess.verbose() {
return format!("{}{}{}", prefix, region.repr(cx), space_str)
}
// These printouts are concise. They do not contain all the information
// the user might want to diagnose an error, but there is basically no way
// to fit that into a short string. Hence the recommendation to use
// `explain_region()` or `note_and_explain_region()`.
match region {
ty::ReScope(_) => prefix.to_string(),
ty::ReEarlyBound(_, _, _, name) => {
token::get_name(name).get().to_string()
}
ty::ReLateBound(_, br) => bound_region_to_string(cx, prefix, space, br),
ty::ReFree(ref fr) => bound_region_to_string(cx, prefix, space, fr.bound_region),
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ty::ReInfer(ReSkolemized(_, br)) => {
bound_region_to_string(cx, prefix, space, br)
}
ty::ReInfer(ReVar(_)) => prefix.to_string(),
ty::ReStatic => format!("{}'static{}", prefix, space_str),
ty::ReEmpty => format!("{}'<empty>{}", prefix, space_str),
}
}
pub fn mutability_to_string(m: ast::Mutability) -> String {
match m {
ast::MutMutable => "mut ".to_string(),
ast::MutImmutable => "".to_string(),
}
}
pub fn mt_to_string(cx: &ctxt, m: &mt) -> String {
format!("{}{}", mutability_to_string(m.mutbl), ty_to_string(cx, m.ty))
}
pub fn trait_store_to_string(cx: &ctxt, s: ty::TraitStore) -> String {
match s {
ty::UniqTraitStore => "Box ".to_string(),
ty::RegionTraitStore(r, m) => {
format!("{}{}", region_ptr_to_string(cx, r), mutability_to_string(m))
}
}
}
pub fn vec_map_to_string<T>(ts: &[T], f: |t: &T| -> String) -> String {
let tstrs = ts.iter().map(f).collect::<Vec<String>>();
format!("[{}]", tstrs.connect(", "))
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}
pub fn fn_sig_to_string(cx: &ctxt, typ: &ty::FnSig) -> String {
format!("fn{}{} -> {}", typ.binder_id, typ.inputs.repr(cx),
typ.output.repr(cx))
}
pub fn trait_ref_to_string(cx: &ctxt, trait_ref: &ty::TraitRef) -> String {
trait_ref.user_string(cx).to_string()
}
pub fn ty_to_string(cx: &ctxt, typ: t) -> String {
fn fn_input_to_string(cx: &ctxt, input: ty::t) -> String {
ty_to_string(cx, input).to_string()
}
fn bare_fn_to_string(cx: &ctxt,
fn_style: ast::FnStyle,
abi: abi::Abi,
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ident: Option<ast::Ident>,
sig: &ty::FnSig)
-> String {
let mut s = String::new();
match fn_style {
ast::NormalFn => {}
_ => {
s.push_str(fn_style.to_string().as_slice());
s.push_char(' ');
}
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};
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if abi != abi::Rust {
s.push_str(format!("extern {} ", abi.to_string()).as_slice());
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};
s.push_str("fn");
match ident {
Some(i) => {
s.push_char(' ');
s.push_str(token::get_ident(i).get());
}
_ => { }
}
push_sig_to_string(cx, &mut s, '(', ')', sig);
s
}
fn closure_to_string(cx: &ctxt, cty: &ty::ClosureTy) -> String {
let mut s = String::new();
match cty.store {
ty::UniqTraitStore => {}
ty::RegionTraitStore(region, _) => {
s.push_str(region_to_string(cx, "", true, region).as_slice());
}
}
match cty.fn_style {
ast::NormalFn => {}
_ => {
s.push_str(cty.fn_style.to_string().as_slice());
s.push_char(' ');
}
};
match cty.store {
ty::UniqTraitStore => {
assert_eq!(cty.onceness, ast::Once);
s.push_str("proc");
push_sig_to_string(cx, &mut s, '(', ')', &cty.sig);
}
ty::RegionTraitStore(..) => {
match cty.onceness {
ast::Many => {}
ast::Once => s.push_str("once ")
}
push_sig_to_string(cx, &mut s, '|', '|', &cty.sig);
}
}
if !cty.bounds.is_empty() {
s.push_str(":");
s.push_str(cty.bounds.repr(cx).as_slice());
}
s
}
fn push_sig_to_string(cx: &ctxt,
s: &mut String,
bra: char,
ket: char,
sig: &ty::FnSig) {
s.push_char(bra);
let strs: Vec<String> = sig.inputs.iter().map(|a| fn_input_to_string(cx, *a)).collect();
s.push_str(strs.connect(", ").as_slice());
if sig.variadic {
s.push_str(", ...");
}
s.push_char(ket);
if ty::get(sig.output).sty != ty_nil {
s.push_str(" -> ");
if ty::type_is_bot(sig.output) {
s.push_char('!');
} else {
s.push_str(ty_to_string(cx, sig.output).as_slice());
}
}
}
// if there is an id, print that instead of the structural type:
/*for def_id in ty::type_def_id(typ).iter() {
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// note that this typedef cannot have type parameters
return ty::item_path_str(cx, *def_id);
}*/
// pretty print the structural type representation:
return match ty::get(typ).sty {
ty_nil => "()".to_string(),
ty_bot => "!".to_string(),
ty_bool => "bool".to_string(),
ty_char => "char".to_string(),
ty_int(t) => ast_util::int_ty_to_string(t, None).to_string(),
ty_uint(t) => ast_util::uint_ty_to_string(t, None).to_string(),
ty_float(t) => ast_util::float_ty_to_string(t).to_string(),
ty_box(typ) => format!("Gc<{}>", ty_to_string(cx, typ)),
ty_uniq(typ) => format!("Box<{}>", ty_to_string(cx, typ)),
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ty_ptr(ref tm) => {
format!("*{} {}", match tm.mutbl {
ast::MutMutable => "mut",
ast::MutImmutable => "const",
}, ty_to_string(cx, tm.ty))
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}
ty_rptr(r, ref tm) => {
let mut buf = region_ptr_to_string(cx, r);
buf.push_str(mt_to_string(cx, tm).as_slice());
buf
}
ty_tup(ref elems) => {
let strs: Vec<String> = elems.iter().map(|elem| ty_to_string(cx, *elem)).collect();
format!("({})", strs.connect(","))
}
ty_closure(ref f) => {
closure_to_string(cx, *f)
}
ty_bare_fn(ref f) => {
bare_fn_to_string(cx, f.fn_style, f.abi, None, &f.sig)
}
ty_infer(infer_ty) => infer_ty.to_string(),
ty_err => "[type error]".to_string(),
ty_param(ParamTy {idx: id, def_id: did, ..}) => {
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let ident = match cx.ty_param_defs.borrow().find(&did.node) {
Some(def) => token::get_ident(def.ident).get().to_string(),
// This can only happen when a type mismatch error happens and
// the actual type has more type parameters than the expected one.
None => format!("<generic #{}>", id),
};
if !cx.sess.verbose() {
ident
} else {
format!("{}:{:?}", ident, did)
}
}
ty_enum(did, ref substs) | ty_struct(did, ref substs) => {
let base = ty::item_path_str(cx, did);
let generics = ty::lookup_item_type(cx, did).generics;
parameterized(cx, base.as_slice(), substs, &generics)
}
ty_trait(box ty::TyTrait {
def_id: did, ref substs, ref bounds
}) => {
let base = ty::item_path_str(cx, did);
let trait_def = ty::lookup_trait_def(cx, did);
let ty = parameterized(cx, base.as_slice(),
substs, &trait_def.generics);
let bound_sep = if bounds.is_empty() { "" } else { ":" };
let bound_str = bounds.repr(cx);
format!("{}{}{}",
ty,
bound_sep,
bound_str)
}
ty_str => "str".to_string(),
ty_vec(ref mt, sz) => {
match sz {
Some(n) => {
format!("[{}, .. {}]", mt_to_string(cx, mt), n)
}
None => format!("[{}]", ty_to_string(cx, mt.ty)),
}
}
}
}
pub fn explicit_self_category_to_str(category: &ty::ExplicitSelfCategory)
-> &'static str {
match *category {
ty::StaticExplicitSelfCategory => "static",
ty::ByValueExplicitSelfCategory => "self",
ty::ByReferenceExplicitSelfCategory(_, ast::MutMutable) => {
"&mut self"
}
ty::ByReferenceExplicitSelfCategory(_, ast::MutImmutable) => "&self",
ty::ByBoxExplicitSelfCategory => "Box<self>",
}
}
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pub fn parameterized(cx: &ctxt,
base: &str,
substs: &subst::Substs,
generics: &ty::Generics)
-> String
{
let mut strs = Vec::new();
match substs.regions {
subst::ErasedRegions => { }
subst::NonerasedRegions(ref regions) => {
for &r in regions.iter() {
let s = region_to_string(cx, "", false, r);
if !s.is_empty() {
strs.push(s)
} else {
// This happens when the value of the region
// parameter is not easily serialized. This may be
// because the user omitted it in the first place,
// or because it refers to some block in the code,
// etc. I'm not sure how best to serialize this.
strs.push(format!("'_"));
}
}
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}
}
let tps = substs.types.get_slice(subst::TypeSpace);
let ty_params = generics.types.get_slice(subst::TypeSpace);
let has_defaults = ty_params.last().map_or(false, |def| def.default.is_some());
let num_defaults = if has_defaults && !cx.sess.verbose() {
ty_params.iter().zip(tps.iter()).rev().take_while(|&(def, &actual)| {
match def.default {
Some(default) => default.subst(cx, substs) == actual,
None => false
}
}).count()
} else {
0
};
for t in tps.slice_to(tps.len() - num_defaults).iter() {
strs.push(ty_to_string(cx, *t))
}
if cx.sess.verbose() {
for t in substs.types.get_slice(subst::SelfSpace).iter() {
strs.push(format!("for {}", t.repr(cx)));
}
}
if strs.len() > 0u {
format!("{}<{}>", base, strs.connect(","))
} else {
format!("{}", base)
}
}
pub fn ty_to_short_str(cx: &ctxt, typ: t) -> String {
let mut s = typ.repr(cx).to_string();
if s.len() >= 32u {
s = s.as_slice().slice(0u, 32u).to_string();
}
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return s;
}
impl<T:Repr> Repr for Option<T> {
fn repr(&self, tcx: &ctxt) -> String {
match self {
&None => "None".to_string(),
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&Some(ref t) => t.repr(tcx),
}
}
}
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impl<T:Repr,U:Repr> Repr for Result<T,U> {
fn repr(&self, tcx: &ctxt) -> String {
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match self {
&Ok(ref t) => t.repr(tcx),
&Err(ref u) => format!("Err({})", u.repr(tcx))
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}
}
}
impl Repr for () {
fn repr(&self, _tcx: &ctxt) -> String {
"()".to_string()
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}
}
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impl<T:Repr> Repr for Rc<T> {
fn repr(&self, tcx: &ctxt) -> String {
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(&**self).repr(tcx)
}
}
impl<T:Repr + 'static> Repr for Gc<T> {
fn repr(&self, tcx: &ctxt) -> String {
(&**self).repr(tcx)
}
}
impl<T:Repr> Repr for Box<T> {
fn repr(&self, tcx: &ctxt) -> String {
(&**self).repr(tcx)
}
}
fn repr_vec<T:Repr>(tcx: &ctxt, v: &[T]) -> String {
vec_map_to_string(v, |t| t.repr(tcx))
}
impl<'a, T:Repr> Repr for &'a [T] {
fn repr(&self, tcx: &ctxt) -> String {
repr_vec(tcx, *self)
}
}
impl<T:Repr> Repr for OwnedSlice<T> {
fn repr(&self, tcx: &ctxt) -> String {
repr_vec(tcx, self.as_slice())
}
}
// This is necessary to handle types like Option<~[T]>, for which
// autoderef cannot convert the &[T] handler
impl<T:Repr> Repr for Vec<T> {
fn repr(&self, tcx: &ctxt) -> String {
repr_vec(tcx, self.as_slice())
}
}
impl Repr for def::Def {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl Repr for ty::TypeParameterDef {
fn repr(&self, tcx: &ctxt) -> String {
format!("TypeParameterDef({:?}, {})", self.def_id,
self.bounds.repr(tcx))
}
}
impl Repr for ty::RegionParameterDef {
fn repr(&self, _tcx: &ctxt) -> String {
format!("RegionParameterDef({}, {:?})",
token::get_name(self.name),
self.def_id)
}
}
impl Repr for ty::t {
fn repr(&self, tcx: &ctxt) -> String {
ty_to_string(tcx, *self)
}
}
impl Repr for ty::mt {
fn repr(&self, tcx: &ctxt) -> String {
mt_to_string(tcx, self)
}
}
impl Repr for subst::Substs {
fn repr(&self, tcx: &ctxt) -> String {
format!("Substs[types={}, regions={}]",
self.types.repr(tcx),
self.regions.repr(tcx))
}
}
impl<T:Repr> Repr for subst::VecPerParamSpace<T> {
fn repr(&self, tcx: &ctxt) -> String {
format!("[{};{};{}]",
self.get_slice(subst::TypeSpace).repr(tcx),
self.get_slice(subst::SelfSpace).repr(tcx),
self.get_slice(subst::FnSpace).repr(tcx))
}
}
impl Repr for ty::ItemSubsts {
fn repr(&self, tcx: &ctxt) -> String {
format!("ItemSubsts({})", self.substs.repr(tcx))
}
}
impl Repr for subst::RegionSubsts {
fn repr(&self, tcx: &ctxt) -> String {
match *self {
subst::ErasedRegions => "erased".to_string(),
subst::NonerasedRegions(ref regions) => regions.repr(tcx)
}
}
}
impl Repr for ty::ParamBounds {
fn repr(&self, tcx: &ctxt) -> String {
let mut res = Vec::new();
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for b in self.builtin_bounds.iter() {
res.push(match b {
ty::BoundStatic => "'static".to_string(),
ty::BoundSend => "Send".to_string(),
ty::BoundSized => "Sized".to_string(),
ty::BoundCopy => "Copy".to_string(),
ty::BoundShare => "Share".to_string(),
});
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}
for t in self.trait_bounds.iter() {
res.push(t.repr(tcx));
}
res.connect("+")
}
}
impl Repr for ty::TraitRef {
fn repr(&self, tcx: &ctxt) -> String {
trait_ref_to_string(tcx, self)
}
}
impl Repr for ast::Expr {
fn repr(&self, _tcx: &ctxt) -> String {
format!("expr({}: {})", self.id, pprust::expr_to_string(self))
}
}
impl Repr for ast::Path {
fn repr(&self, _tcx: &ctxt) -> String {
format!("path({})", pprust::path_to_string(self))
}
}
impl Repr for ast::Item {
fn repr(&self, tcx: &ctxt) -> String {
format!("item({})", tcx.map.node_to_string(self.id))
}
}
impl Repr for ast::Stmt {
fn repr(&self, _tcx: &ctxt) -> String {
format!("stmt({}: {})",
ast_util::stmt_id(self),
pprust::stmt_to_string(self))
}
}
impl Repr for ast::Pat {
fn repr(&self, _tcx: &ctxt) -> String {
format!("pat({}: {})", self.id, pprust::pat_to_string(self))
}
}
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impl Repr for ty::BoundRegion {
fn repr(&self, tcx: &ctxt) -> String {
match *self {
ty::BrAnon(id) => format!("BrAnon({})", id),
ty::BrNamed(id, name) => {
format!("BrNamed({}, {})", id.repr(tcx), token::get_name(name))
}
ty::BrFresh(id) => format!("BrFresh({})", id),
}
}
}
impl Repr for ty::Region {
fn repr(&self, tcx: &ctxt) -> String {
match *self {
ty::ReEarlyBound(id, space, index, name) => {
format!("ReEarlyBound({}, {}, {}, {})",
id,
space,
index,
token::get_name(name))
}
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ty::ReLateBound(binder_id, ref bound_region) => {
format!("ReLateBound({}, {})",
binder_id,
bound_region.repr(tcx))
}
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ty::ReFree(ref fr) => {
format!("ReFree({}, {})",
fr.scope_id,
fr.bound_region.repr(tcx))
}
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ty::ReScope(id) => {
format!("ReScope({})", id)
}
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ty::ReStatic => {
"ReStatic".to_string()
}
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ty::ReInfer(ReVar(ref vid)) => {
format!("ReInfer({})", vid.index)
}
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ty::ReInfer(ReSkolemized(id, ref bound_region)) => {
format!("re_skolemized({}, {})", id, bound_region.repr(tcx))
}
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ty::ReEmpty => {
"ReEmpty".to_string()
}
}
}
}
impl Repr for ast::DefId {
fn repr(&self, tcx: &ctxt) -> String {
// Unfortunately, there seems to be no way to attempt to print
// a path for a def-id, so I'll just make a best effort for now
// and otherwise fallback to just printing the crate/node pair
if self.krate == ast::LOCAL_CRATE {
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{
match tcx.map.find(self.node) {
Some(ast_map::NodeItem(..)) |
Some(ast_map::NodeForeignItem(..)) |
Some(ast_map::NodeMethod(..)) |
Some(ast_map::NodeTraitMethod(..)) |
Some(ast_map::NodeVariant(..)) |
Some(ast_map::NodeStructCtor(..)) => {
return format!(
"{:?}:{}",
*self,
ty::item_path_str(tcx, *self))
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}
_ => {}
}
}
}
return format!("{:?}", *self)
}
}
impl Repr for ty::Polytype {
fn repr(&self, tcx: &ctxt) -> String {
format!("Polytype {{generics: {}, ty: {}}}",
self.generics.repr(tcx),
self.ty.repr(tcx))
}
}
impl Repr for ty::Generics {
fn repr(&self, tcx: &ctxt) -> String {
format!("Generics(types: {}, regions: {})",
self.types.repr(tcx),
self.regions.repr(tcx))
}
}
impl Repr for ty::ItemVariances {
fn repr(&self, tcx: &ctxt) -> String {
format!("ItemVariances(types={}, \
regions={})",
self.types.repr(tcx),
self.regions.repr(tcx))
}
}
impl Repr for ty::Variance {
fn repr(&self, _: &ctxt) -> String {
// The first `.to_string()` returns a &'static str (it is not an implementation
// of the ToString trait). Because of that, we need to call `.to_string()` again
// if we want to have a `String`.
self.to_string().to_string()
}
}
impl Repr for ty::Method {
fn repr(&self, tcx: &ctxt) -> String {
format!("method(ident: {}, generics: {}, fty: {}, \
explicit_self: {}, vis: {}, def_id: {})",
self.ident.repr(tcx),
self.generics.repr(tcx),
self.fty.repr(tcx),
self.explicit_self.repr(tcx),
self.vis.repr(tcx),
self.def_id.repr(tcx))
}
}
impl Repr for ast::Name {
fn repr(&self, _tcx: &ctxt) -> String {
token::get_name(*self).get().to_string()
}
}
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impl Repr for ast::Ident {
fn repr(&self, _tcx: &ctxt) -> String {
token::get_ident(*self).get().to_string()
}
}
impl Repr for ast::ExplicitSelf_ {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl Repr for ast::Visibility {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl Repr for ty::BareFnTy {
fn repr(&self, tcx: &ctxt) -> String {
format!("BareFnTy {{fn_style: {:?}, abi: {}, sig: {}}}",
self.fn_style,
self.abi.to_string(),
self.sig.repr(tcx))
}
}
impl Repr for ty::FnSig {
fn repr(&self, tcx: &ctxt) -> String {
fn_sig_to_string(tcx, self)
}
}
impl Repr for typeck::MethodCallee {
fn repr(&self, tcx: &ctxt) -> String {
format!("MethodCallee {{origin: {}, ty: {}, {}}}",
self.origin.repr(tcx),
self.ty.repr(tcx),
self.substs.repr(tcx))
}
}
impl Repr for typeck::MethodOrigin {
fn repr(&self, tcx: &ctxt) -> String {
match self {
&typeck::MethodStatic(def_id) => {
format!("MethodStatic({})", def_id.repr(tcx))
}
&typeck::MethodParam(ref p) => {
p.repr(tcx)
}
&typeck::MethodObject(ref p) => {
p.repr(tcx)
}
}
}
}
impl Repr for typeck::MethodParam {
fn repr(&self, tcx: &ctxt) -> String {
format!("MethodParam({},{:?},{:?},{:?})",
self.trait_id.repr(tcx),
self.method_num,
self.param_num,
self.bound_num)
}
}
impl Repr for typeck::MethodObject {
fn repr(&self, tcx: &ctxt) -> String {
format!("MethodObject({},{:?},{:?})",
self.trait_id.repr(tcx),
self.method_num,
self.real_index)
}
}
impl Repr for ty::TraitStore {
fn repr(&self, tcx: &ctxt) -> String {
trait_store_to_string(tcx, *self)
}
}
impl Repr for ty::BuiltinBound {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl UserString for ty::BuiltinBound {
fn user_string(&self, _tcx: &ctxt) -> String {
match *self {
ty::BoundStatic => "'static".to_string(),
ty::BoundSend => "Send".to_string(),
ty::BoundSized => "Sized".to_string(),
ty::BoundCopy => "Copy".to_string(),
ty::BoundShare => "Share".to_string(),
}
}
}
impl Repr for ty::BuiltinBounds {
fn repr(&self, tcx: &ctxt) -> String {
self.user_string(tcx)
}
}
impl Repr for Span {
fn repr(&self, tcx: &ctxt) -> String {
tcx.sess.codemap().span_to_string(*self).to_string()
}
}
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impl<A:UserString> UserString for Rc<A> {
fn user_string(&self, tcx: &ctxt) -> String {
let this: &A = &**self;
this.user_string(tcx)
}
}
impl UserString for ty::BuiltinBounds {
fn user_string(&self, tcx: &ctxt) -> String {
self.iter()
.map(|bb| bb.user_string(tcx))
.collect::<Vec<String>>()
.connect("+")
.to_string()
}
}
impl UserString for ty::TraitRef {
fn user_string(&self, tcx: &ctxt) -> String {
let base = ty::item_path_str(tcx, self.def_id);
let trait_def = ty::lookup_trait_def(tcx, self.def_id);
parameterized(tcx, base.as_slice(), &self.substs, &trait_def.generics)
}
}
impl UserString for ty::t {
fn user_string(&self, tcx: &ctxt) -> String {
ty_to_string(tcx, *self)
}
}
impl UserString for ast::Ident {
fn user_string(&self, _tcx: &ctxt) -> String {
token::get_name(self.name).get().to_string()
}
}
impl Repr for abi::Abi {
fn repr(&self, _tcx: &ctxt) -> String {
self.to_string()
}
}
impl UserString for abi::Abi {
fn user_string(&self, _tcx: &ctxt) -> String {
self.to_string()
}
}
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impl Repr for ty::UpvarId {
fn repr(&self, tcx: &ctxt) -> String {
format!("UpvarId({};`{}`;{})",
self.var_id,
ty::local_var_name_str(tcx, self.var_id),
self.closure_expr_id)
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}
}
impl Repr for ast::Mutability {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
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}
}
impl Repr for ty::BorrowKind {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
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}
}
impl Repr for ty::UpvarBorrow {
fn repr(&self, tcx: &ctxt) -> String {
format!("UpvarBorrow({}, {})",
self.kind.repr(tcx),
self.region.repr(tcx))
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}
}
impl Repr for ty::IntVid {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{}", self)
}
}
impl Repr for ty::FloatVid {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{}", self)
}
}
impl Repr for ty::RegionVid {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{}", self)
}
}
impl Repr for ty::TyVid {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{}", self)
}
}
impl Repr for ty::IntVarValue {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl Repr for ast::IntTy {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl Repr for ast::UintTy {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl Repr for ast::FloatTy {
fn repr(&self, _tcx: &ctxt) -> String {
format!("{:?}", *self)
}
}
impl<T:Repr> Repr for infer::Bounds<T> {
fn repr(&self, tcx: &ctxt) -> String {
format!("({} <= {})",
self.lb.repr(tcx),
self.ub.repr(tcx))
}
}
impl<K:Repr,V:Repr> Repr for VV<K,V> {
fn repr(&self, tcx: &ctxt) -> String {
match *self {
unify::Redirect(ref k) =>
format!("Redirect({})", k.repr(tcx)),
unify::Root(ref v, r) =>
format!("Root({}, {})", v.repr(tcx), r)
}
}
}
impl Repr for region_inference::VarValue {
fn repr(&self, tcx: &ctxt) -> String {
match *self {
infer::region_inference::NoValue =>
format!("NoValue"),
infer::region_inference::Value(r) =>
format!("Value({})", r.repr(tcx)),
infer::region_inference::ErrorValue =>
format!("ErrorValue"),
}
}
}
impl Repr for ty::ExplicitSelfCategory {
fn repr(&self, _: &ctxt) -> String {
explicit_self_category_to_str(self).to_string()
}
}