1009 lines
30 KiB
Rust
1009 lines
30 KiB
Rust
// 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::ty::{ReSkolemized, ReVar};
|
|
use middle::ty::{BoundRegion, BrAnon, BrNamed};
|
|
use middle::ty::{BrFresh, ctxt};
|
|
use middle::ty::{mt, t, param_ty};
|
|
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_self, ty_tup};
|
|
use middle::ty::{ty_uniq, ty_trait, ty_int, ty_uint, ty_infer};
|
|
use middle::ty;
|
|
use middle::typeck;
|
|
|
|
use std::rc::Rc;
|
|
use std::string::String;
|
|
use syntax::abi;
|
|
use syntax::ast_map;
|
|
use syntax::codemap::{Span, Pos};
|
|
use syntax::parse::token;
|
|
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;
|
|
}
|
|
|
|
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());
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn explain_region_and_span(cx: &ctxt, region: ty::Region)
|
|
-> (String, Option<Span>) {
|
|
return match region {
|
|
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)) => {
|
|
match expr.node {
|
|
ast::ExprCall(..) => explain_span(cx, "call", expr.span),
|
|
ast::ExprMethodCall(..) => {
|
|
explain_span(cx, "method call", expr.span)
|
|
},
|
|
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)
|
|
}
|
|
Some(_) | None => {
|
|
// this really should not happen
|
|
(format_strbuf!("unknown scope: {}. Please report a bug.",
|
|
node_id),
|
|
None)
|
|
}
|
|
}
|
|
}
|
|
|
|
ReFree(ref fr) => {
|
|
let prefix = match fr.bound_region {
|
|
BrAnon(idx) => {
|
|
format_strbuf!("the anonymous lifetime \\#{} defined on",
|
|
idx + 1)
|
|
}
|
|
BrFresh(_) => "an anonymous lifetime defined on".to_string(),
|
|
_ => {
|
|
format_strbuf!("the lifetime {} as defined on",
|
|
bound_region_ptr_to_str(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_strbuf!("{} {}", 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_strbuf!("{} {}", prefix, msg), opt_span)
|
|
}
|
|
Some(_) | None => {
|
|
// this really should not happen
|
|
(format_strbuf!("{} node {}", prefix, fr.scope_id), None)
|
|
}
|
|
}
|
|
}
|
|
|
|
ReStatic => { ("the static lifetime".to_string(), None) }
|
|
|
|
ReEmpty => { ("the empty lifetime".to_string(), None) }
|
|
|
|
// I believe these cases should not occur (except when debugging,
|
|
// perhaps)
|
|
ty::ReInfer(_) | ty::ReEarlyBound(..) | ty::ReLateBound(..) => {
|
|
(format_strbuf!("lifetime {:?}", region), None)
|
|
}
|
|
};
|
|
|
|
fn explain_span(cx: &ctxt, heading: &str, span: Span)
|
|
-> (String, Option<Span>) {
|
|
let lo = cx.sess.codemap().lookup_char_pos_adj(span.lo);
|
|
(format_strbuf!("the {} at {}:{}",
|
|
heading,
|
|
lo.line,
|
|
lo.col.to_uint()), Some(span))
|
|
}
|
|
}
|
|
|
|
pub fn bound_region_ptr_to_str(cx: &ctxt, br: BoundRegion) -> String {
|
|
bound_region_to_str(cx, "", false, br)
|
|
}
|
|
|
|
pub fn bound_region_to_str(cx: &ctxt,
|
|
prefix: &str, space: bool,
|
|
br: BoundRegion) -> String {
|
|
let space_str = if space { " " } else { "" };
|
|
|
|
if cx.sess.verbose() {
|
|
return format_strbuf!("{}{}{}", prefix, br.repr(cx), space_str)
|
|
}
|
|
|
|
match br {
|
|
BrNamed(_, name) => {
|
|
format_strbuf!("{}'{}{}",
|
|
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_str(cx: &ctxt, region: Region) -> String {
|
|
region_to_str(cx, "&", true, region)
|
|
}
|
|
|
|
pub fn region_to_str(cx: &ctxt, prefix: &str, space: bool, region: Region) -> String {
|
|
let space_str = if space { " " } else { "" };
|
|
|
|
if cx.sess.verbose() {
|
|
return format_strbuf!("{}{}{}", 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_str(cx, prefix, space, br),
|
|
ty::ReFree(ref fr) => bound_region_to_str(cx, prefix, space, fr.bound_region),
|
|
ty::ReInfer(ReSkolemized(_, br)) => {
|
|
bound_region_to_str(cx, prefix, space, br)
|
|
}
|
|
ty::ReInfer(ReVar(_)) => prefix.to_string(),
|
|
ty::ReStatic => format_strbuf!("{}'static{}", prefix, space_str),
|
|
ty::ReEmpty => format_strbuf!("{}'<empty>{}", prefix, space_str),
|
|
}
|
|
}
|
|
|
|
pub fn mutability_to_str(m: ast::Mutability) -> String {
|
|
match m {
|
|
ast::MutMutable => "mut ".to_string(),
|
|
ast::MutImmutable => "".to_string(),
|
|
}
|
|
}
|
|
|
|
pub fn mt_to_str(cx: &ctxt, m: &mt) -> String {
|
|
format_strbuf!("{}{}", mutability_to_str(m.mutbl), ty_to_str(cx, m.ty))
|
|
}
|
|
|
|
pub fn trait_store_to_str(cx: &ctxt, s: ty::TraitStore) -> String {
|
|
match s {
|
|
ty::UniqTraitStore => "Box ".to_string(),
|
|
ty::RegionTraitStore(r, m) => {
|
|
format_strbuf!("{}{}",
|
|
region_ptr_to_str(cx, r),
|
|
mutability_to_str(m))
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn vec_map_to_str<T>(ts: &[T], f: |t: &T| -> String) -> String {
|
|
let tstrs = ts.iter().map(f).collect::<Vec<String>>();
|
|
format_strbuf!("[{}]", tstrs.connect(", "))
|
|
}
|
|
|
|
pub fn fn_sig_to_str(cx: &ctxt, typ: &ty::FnSig) -> String {
|
|
format_strbuf!("fn{}{} -> {}",
|
|
typ.binder_id,
|
|
typ.inputs.repr(cx),
|
|
typ.output.repr(cx))
|
|
}
|
|
|
|
pub fn trait_ref_to_str(cx: &ctxt, trait_ref: &ty::TraitRef) -> String {
|
|
trait_ref.user_string(cx).to_string()
|
|
}
|
|
|
|
pub fn ty_to_str(cx: &ctxt, typ: t) -> String {
|
|
fn fn_input_to_str(cx: &ctxt, input: ty::t) -> String {
|
|
ty_to_str(cx, input).to_string()
|
|
}
|
|
fn bare_fn_to_str(cx: &ctxt,
|
|
fn_style: ast::FnStyle,
|
|
abi: abi::Abi,
|
|
ident: Option<ast::Ident>,
|
|
sig: &ty::FnSig)
|
|
-> String {
|
|
let mut s = String::new();
|
|
match fn_style {
|
|
ast::NormalFn => {}
|
|
_ => {
|
|
s.push_str(fn_style.to_str().as_slice());
|
|
s.push_char(' ');
|
|
}
|
|
};
|
|
|
|
if abi != abi::Rust {
|
|
s.push_str(format!("extern {} ", abi.to_str()).as_slice());
|
|
};
|
|
|
|
s.push_str("fn");
|
|
|
|
match ident {
|
|
Some(i) => {
|
|
s.push_char(' ');
|
|
s.push_str(token::get_ident(i).get());
|
|
}
|
|
_ => { }
|
|
}
|
|
|
|
push_sig_to_str(cx, &mut s, '(', ')', sig);
|
|
|
|
s
|
|
}
|
|
|
|
fn closure_to_str(cx: &ctxt, cty: &ty::ClosureTy) -> String {
|
|
let mut s = String::new();
|
|
|
|
match cty.store {
|
|
ty::UniqTraitStore => {}
|
|
ty::RegionTraitStore(region, _) => {
|
|
s.push_str(region_to_str(cx, "", true, region).as_slice());
|
|
}
|
|
}
|
|
|
|
match cty.fn_style {
|
|
ast::NormalFn => {}
|
|
_ => {
|
|
s.push_str(cty.fn_style.to_str().as_slice());
|
|
s.push_char(' ');
|
|
}
|
|
};
|
|
|
|
match cty.store {
|
|
ty::UniqTraitStore => {
|
|
assert_eq!(cty.onceness, ast::Once);
|
|
s.push_str("proc");
|
|
push_sig_to_str(cx, &mut s, '(', ')', &cty.sig);
|
|
}
|
|
ty::RegionTraitStore(..) => {
|
|
match cty.onceness {
|
|
ast::Many => {}
|
|
ast::Once => s.push_str("once ")
|
|
}
|
|
push_sig_to_str(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_str(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_str(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_str(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() {
|
|
// 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_str(t, None,
|
|
ast_util::AutoSuffix).to_string(),
|
|
ty_uint(t) => ast_util::uint_ty_to_str(t, None,
|
|
ast_util::AutoSuffix).to_string(),
|
|
ty_float(t) => ast_util::float_ty_to_str(t).to_string(),
|
|
ty_box(typ) => format_strbuf!("@{}", ty_to_str(cx, typ)),
|
|
ty_uniq(typ) => format_strbuf!("~{}", ty_to_str(cx, typ)),
|
|
ty_ptr(ref tm) => format_strbuf!("*{}", mt_to_str(cx, tm)),
|
|
ty_rptr(r, ref tm) => {
|
|
let mut buf = region_ptr_to_str(cx, r);
|
|
buf.push_str(mt_to_str(cx, tm).as_slice());
|
|
buf
|
|
}
|
|
ty_tup(ref elems) => {
|
|
let strs: Vec<String> = elems.iter().map(|elem| ty_to_str(cx, *elem)).collect();
|
|
format_strbuf!("({})", strs.connect(","))
|
|
}
|
|
ty_closure(ref f) => {
|
|
closure_to_str(cx, *f)
|
|
}
|
|
ty_bare_fn(ref f) => {
|
|
bare_fn_to_str(cx, f.fn_style, f.abi, None, &f.sig)
|
|
}
|
|
ty_infer(infer_ty) => infer_ty.to_str().to_string(),
|
|
ty_err => "[type error]".to_string(),
|
|
ty_param(param_ty {idx: id, def_id: did}) => {
|
|
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_strbuf!("<generic \\#{}>", id)
|
|
};
|
|
if !cx.sess.verbose() {
|
|
ident
|
|
} else {
|
|
format_strbuf!("{}:{:?}", ident, did)
|
|
}
|
|
}
|
|
ty_self(..) => "Self".to_string(),
|
|
ty_enum(did, ref substs) | ty_struct(did, ref substs) => {
|
|
let base = ty::item_path_str(cx, did);
|
|
parameterized(cx,
|
|
base.as_slice(),
|
|
&substs.regions,
|
|
substs.tps.as_slice(),
|
|
did,
|
|
false)
|
|
}
|
|
ty_trait(box ty::TyTrait {
|
|
def_id: did, ref substs, store, ref bounds
|
|
}) => {
|
|
let base = ty::item_path_str(cx, did);
|
|
let ty = parameterized(cx, base.as_slice(), &substs.regions,
|
|
substs.tps.as_slice(), did, true);
|
|
let bound_sep = if bounds.is_empty() { "" } else { ":" };
|
|
let bound_str = bounds.repr(cx);
|
|
format_strbuf!("{}{}{}{}",
|
|
trait_store_to_str(cx, store),
|
|
ty,
|
|
bound_sep,
|
|
bound_str)
|
|
}
|
|
ty_str => "str".to_string(),
|
|
ty_vec(ref mt, sz) => {
|
|
match sz {
|
|
Some(n) => {
|
|
format_strbuf!("[{}, .. {}]", mt_to_str(cx, mt), n)
|
|
}
|
|
None => format_strbuf!("[{}]", ty_to_str(cx, mt.ty)),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn parameterized(cx: &ctxt,
|
|
base: &str,
|
|
regions: &ty::RegionSubsts,
|
|
tps: &[ty::t],
|
|
did: ast::DefId,
|
|
is_trait: bool)
|
|
-> String {
|
|
let mut strs = Vec::new();
|
|
match *regions {
|
|
ty::ErasedRegions => { }
|
|
ty::NonerasedRegions(ref regions) => {
|
|
for &r in regions.iter() {
|
|
strs.push(region_to_str(cx, "", false, r))
|
|
}
|
|
}
|
|
}
|
|
|
|
let generics = if is_trait {
|
|
ty::lookup_trait_def(cx, did).generics.clone()
|
|
} else {
|
|
ty::lookup_item_type(cx, did).generics
|
|
};
|
|
let ty_params = generics.type_param_defs();
|
|
let has_defaults = ty_params.last().map_or(false, |def| def.default.is_some());
|
|
let num_defaults = if has_defaults {
|
|
// We should have a borrowed version of substs instead of cloning.
|
|
let mut substs = ty::substs {
|
|
tps: Vec::from_slice(tps),
|
|
regions: regions.clone(),
|
|
self_ty: None
|
|
};
|
|
ty_params.iter().zip(tps.iter()).rev().take_while(|&(def, &actual)| {
|
|
substs.tps.pop();
|
|
match def.default {
|
|
Some(default) => ty::subst(cx, &substs, default) == actual,
|
|
None => false
|
|
}
|
|
}).len()
|
|
} else {
|
|
0
|
|
};
|
|
|
|
for t in tps.slice_to(tps.len() - num_defaults).iter() {
|
|
strs.push(ty_to_str(cx, *t))
|
|
}
|
|
|
|
if strs.len() > 0u {
|
|
format_strbuf!("{}<{}>", base, strs.connect(","))
|
|
} else {
|
|
format_strbuf!("{}", 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();
|
|
}
|
|
return s;
|
|
}
|
|
|
|
impl<T:Repr> Repr for Option<T> {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
match self {
|
|
&None => "None".to_string(),
|
|
&Some(ref t) => t.repr(tcx),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<T:Repr,U:Repr> Repr for Result<T,U> {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
match self {
|
|
&Ok(ref t) => t.repr(tcx),
|
|
&Err(ref u) => format_strbuf!("Err({})", u.repr(tcx))
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for () {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
"()".to_string()
|
|
}
|
|
}
|
|
|
|
impl<T:Repr> Repr for Rc<T> {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
(&**self).repr(tcx)
|
|
}
|
|
}
|
|
|
|
impl<T:Repr> Repr for @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_str(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 ty::TypeParameterDef {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("TypeParameterDef({:?}, {})",
|
|
self.def_id,
|
|
self.bounds.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::RegionParameterDef {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("RegionParameterDef({}, {:?})",
|
|
token::get_name(self.name),
|
|
self.def_id)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::t {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
ty_to_str(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::substs {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("substs(regions={}, self_ty={}, tps={})",
|
|
self.regions.repr(tcx),
|
|
self.self_ty.repr(tcx),
|
|
self.tps.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::ItemSubsts {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("ItemSubsts({})", self.substs.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::RegionSubsts {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
match *self {
|
|
ty::ErasedRegions => "erased".to_string(),
|
|
ty::NonerasedRegions(ref regions) => regions.repr(tcx)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::ParamBounds {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
let mut res = Vec::new();
|
|
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(),
|
|
});
|
|
}
|
|
for t in self.trait_bounds.iter() {
|
|
res.push(t.repr(tcx));
|
|
}
|
|
res.connect("+").to_string()
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::TraitRef {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
trait_ref_to_str(tcx, self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Expr {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("expr({}: {})", self.id, pprust::expr_to_str(self))
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Item {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("item({})", tcx.map.node_to_str(self.id))
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Stmt {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("stmt({}: {})",
|
|
ast_util::stmt_id(self),
|
|
pprust::stmt_to_str(self))
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Pat {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("pat({}: {})", self.id, pprust::pat_to_str(self))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BoundRegion {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
match *self {
|
|
ty::BrAnon(id) => format_strbuf!("BrAnon({})", id),
|
|
ty::BrNamed(id, name) => {
|
|
format_strbuf!("BrNamed({}, {})",
|
|
id.repr(tcx),
|
|
token::get_name(name))
|
|
}
|
|
ty::BrFresh(id) => format_strbuf!("BrFresh({})", id),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::Region {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
match *self {
|
|
ty::ReEarlyBound(id, index, name) => {
|
|
format_strbuf!("ReEarlyBound({}, {}, {})",
|
|
id,
|
|
index,
|
|
token::get_name(name))
|
|
}
|
|
|
|
ty::ReLateBound(binder_id, ref bound_region) => {
|
|
format_strbuf!("ReLateBound({}, {})",
|
|
binder_id,
|
|
bound_region.repr(tcx))
|
|
}
|
|
|
|
ty::ReFree(ref fr) => {
|
|
format_strbuf!("ReFree({}, {})",
|
|
fr.scope_id,
|
|
fr.bound_region.repr(tcx))
|
|
}
|
|
|
|
ty::ReScope(id) => {
|
|
format_strbuf!("ReScope({})", id)
|
|
}
|
|
|
|
ty::ReStatic => {
|
|
"ReStatic".to_string()
|
|
}
|
|
|
|
ty::ReInfer(ReVar(ref vid)) => {
|
|
format_strbuf!("ReInfer({})", vid.id)
|
|
}
|
|
|
|
ty::ReInfer(ReSkolemized(id, ref bound_region)) => {
|
|
format_strbuf!("re_skolemized({}, {})",
|
|
id,
|
|
bound_region.repr(tcx))
|
|
}
|
|
|
|
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 {
|
|
{
|
|
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_strbuf!(
|
|
"{:?}:{}",
|
|
*self,
|
|
ty::item_path_str(tcx, *self))
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
}
|
|
return format_strbuf!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::ty_param_bounds_and_ty {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("ty_param_bounds_and_ty \\{generics: {}, ty: {}\\}",
|
|
self.generics.repr(tcx),
|
|
self.ty.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::Generics {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("Generics(type_param_defs: {}, \
|
|
region_param_defs: {})",
|
|
self.type_param_defs().repr(tcx),
|
|
self.region_param_defs().repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::ItemVariances {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("IterVariances(self_param={}, \
|
|
type_params={}, \
|
|
region_params={})",
|
|
self.self_param.repr(tcx),
|
|
self.type_params.repr(tcx),
|
|
self.region_params.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::Variance {
|
|
fn repr(&self, _: &ctxt) -> String {
|
|
self.to_str().to_string()
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::Method {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("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()
|
|
}
|
|
}
|
|
|
|
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_strbuf!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Visibility {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BareFnTy {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("BareFnTy \\{fn_style: {:?}, abi: {}, sig: {}\\}",
|
|
self.fn_style,
|
|
self.abi.to_str(),
|
|
self.sig.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::FnSig {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
fn_sig_to_str(tcx, self)
|
|
}
|
|
}
|
|
|
|
impl Repr for typeck::MethodCallee {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("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_strbuf!("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_strbuf!("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_strbuf!("MethodObject({},{:?},{:?})",
|
|
self.trait_id.repr(tcx),
|
|
self.method_num,
|
|
self.real_index)
|
|
}
|
|
}
|
|
|
|
|
|
impl Repr for ty::RegionVid {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::TraitStore {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
trait_store_to_str(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BuiltinBound {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("{:?}", *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_str(*self).to_string()
|
|
}
|
|
}
|
|
|
|
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);
|
|
if tcx.sess.verbose() && self.substs.self_ty.is_some() {
|
|
let mut all_tps = self.substs.tps.clone();
|
|
for &t in self.substs.self_ty.iter() { all_tps.push(t); }
|
|
parameterized(tcx,
|
|
base.as_slice(),
|
|
&self.substs.regions,
|
|
all_tps.as_slice(),
|
|
self.def_id,
|
|
true)
|
|
} else {
|
|
parameterized(tcx,
|
|
base.as_slice(),
|
|
&self.substs.regions,
|
|
self.substs.tps.as_slice(),
|
|
self.def_id,
|
|
true)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl UserString for ty::t {
|
|
fn user_string(&self, tcx: &ctxt) -> String {
|
|
ty_to_str(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_str().to_string()
|
|
}
|
|
}
|
|
|
|
impl UserString for abi::Abi {
|
|
fn user_string(&self, _tcx: &ctxt) -> String {
|
|
self.to_str().to_string()
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::UpvarId {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("UpvarId({};`{}`;{})",
|
|
self.var_id,
|
|
ty::local_var_name_str(tcx, self.var_id),
|
|
self.closure_expr_id)
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Mutability {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BorrowKind {
|
|
fn repr(&self, _tcx: &ctxt) -> String {
|
|
format_strbuf!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::UpvarBorrow {
|
|
fn repr(&self, tcx: &ctxt) -> String {
|
|
format_strbuf!("UpvarBorrow({}, {})",
|
|
self.kind.repr(tcx),
|
|
self.region.repr(tcx))
|
|
}
|
|
}
|