1067 lines
31 KiB
Rust
1067 lines
31 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use metadata::encoder;
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use middle::ty::{ReSkolemized, ReVar};
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use middle::ty::{BoundRegion, BrAnon, BrNamed};
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use middle::ty::{BrFresh, ctxt};
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use middle::ty::{mt, t, param_ty};
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use middle::ty::{ReFree, ReScope, ReInfer, ReStatic, Region,
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ReEmpty};
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use middle::ty::{ty_bool, ty_char, ty_bot, ty_box, ty_struct, ty_enum};
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use middle::ty::{ty_err, ty_str, ty_vec, ty_float, ty_bare_fn, ty_closure};
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use middle::ty::{ty_nil, ty_param, ty_ptr, ty_rptr, ty_self, ty_tup};
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use middle::ty::{ty_uniq, ty_trait, ty_int, ty_uint, ty_unboxed_vec, ty_infer};
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use middle::ty;
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use middle::typeck;
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use syntax::abi::AbiSet;
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use syntax::ast_map;
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use syntax::codemap::{Span, Pos};
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use syntax::parse::token;
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use syntax::print::pprust;
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use syntax::{ast, ast_util};
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use syntax::opt_vec;
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use syntax::opt_vec::OptVec;
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/// Produces a string suitable for debugging output.
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pub trait Repr {
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fn repr(&self, tcx: ctxt) -> ~str;
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}
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/// Produces a string suitable for showing to the user.
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pub trait UserString {
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fn user_string(&self, tcx: ctxt) -> ~str;
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}
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pub fn note_and_explain_region(cx: ctxt,
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prefix: &str,
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region: ty::Region,
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suffix: &str) {
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match explain_region_and_span(cx, region) {
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(ref str, Some(span)) => {
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cx.sess.span_note(
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span,
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format!("{}{}{}", prefix, (*str), suffix));
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}
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(ref str, None) => {
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cx.sess.note(
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format!("{}{}{}", prefix, (*str), suffix));
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}
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}
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}
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/// Returns a string like "the block at 27:31" that attempts to explain a
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/// lifetime in a way it might plausibly be understood.
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pub fn explain_region(cx: ctxt, region: ty::Region) -> ~str {
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let (res, _) = explain_region_and_span(cx, region);
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return res;
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}
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pub fn explain_region_and_span(cx: ctxt, region: ty::Region)
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-> (~str, Option<Span>) {
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return match region {
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ReScope(node_id) => {
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match cx.items.find(node_id) {
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Some(ast_map::NodeBlock(ref blk)) => {
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explain_span(cx, "block", blk.span)
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}
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Some(ast_map::NodeCalleeScope(expr)) => {
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explain_span(cx, "callee", expr.span)
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}
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Some(ast_map::NodeExpr(expr)) => {
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match expr.node {
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ast::ExprCall(..) => explain_span(cx, "call", expr.span),
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ast::ExprMethodCall(..) => {
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explain_span(cx, "method call", expr.span)
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},
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ast::ExprMatch(..) => explain_span(cx, "match", expr.span),
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_ => explain_span(cx, "expression", expr.span)
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}
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}
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Some(ast_map::NodeStmt(stmt)) => {
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explain_span(cx, "statement", stmt.span)
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}
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Some(ast_map::NodeItem(it, _)) if (match it.node {
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ast::ItemFn(..) => true, _ => false}) => {
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explain_span(cx, "function body", it.span)
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}
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Some(_) | None => {
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// this really should not happen
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(format!("unknown scope: {}. Please report a bug.", node_id),
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None)
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}
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}
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}
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ReFree(ref fr) => {
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let prefix = match fr.bound_region {
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BrAnon(idx) => format!("the anonymous lifetime \\#{} defined on",
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idx + 1),
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BrFresh(_) => format!("an anonymous lifetime defined on"),
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_ => format!("the lifetime {} as defined on",
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bound_region_ptr_to_str(cx, fr.bound_region))
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};
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match cx.items.find(fr.scope_id) {
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Some(ast_map::NodeBlock(ref blk)) => {
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let (msg, opt_span) = explain_span(cx, "block", blk.span);
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(format!("{} {}", prefix, msg), opt_span)
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}
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Some(ast_map::NodeItem(it, _)) if match it.node {
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ast::ItemImpl(..) => true, _ => false} => {
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let (msg, opt_span) = explain_span(cx, "impl", it.span);
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(format!("{} {}", prefix, msg), opt_span)
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}
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Some(_) | None => {
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// this really should not happen
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(format!("{} node {}", prefix, fr.scope_id), None)
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}
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}
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}
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ReStatic => { (~"the static lifetime", None) }
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ReEmpty => { (~"the empty lifetime", None) }
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// I believe these cases should not occur (except when debugging,
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// perhaps)
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ty::ReInfer(_) | ty::ReEarlyBound(..) | ty::ReLateBound(..) => {
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(format!("lifetime {:?}", region), None)
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}
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};
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fn explain_span(cx: ctxt, heading: &str, span: Span)
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-> (~str, Option<Span>)
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{
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let lo = cx.sess.codemap.lookup_char_pos_adj(span.lo);
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(format!("the {} at {}:{}", heading,
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lo.line, lo.col.to_uint()), Some(span))
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}
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}
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pub fn bound_region_ptr_to_str(cx: ctxt, br: BoundRegion) -> ~str {
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bound_region_to_str(cx, "&", true, br)
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}
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pub fn bound_region_to_str(cx: ctxt,
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prefix: &str, space: bool,
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br: BoundRegion) -> ~str {
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let space_str = if space { " " } else { "" };
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if cx.sess.verbose() {
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return format!("{}{}{}", prefix, br.repr(cx), space_str);
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}
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match br {
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BrNamed(_, ident) => format!("{}'{}{}", prefix,
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cx.sess.str_of(ident), space_str),
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BrAnon(_) => prefix.to_str(),
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BrFresh(_) => prefix.to_str(),
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}
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}
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pub fn ReScope_id_to_str(cx: ctxt, node_id: ast::NodeId) -> ~str {
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match cx.items.find(node_id) {
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Some(ast_map::NodeBlock(ref blk)) => {
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format!("<block at {}>",
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cx.sess.codemap.span_to_str(blk.span))
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}
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Some(ast_map::NodeExpr(expr)) => {
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match expr.node {
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ast::ExprCall(..) => {
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format!("<call at {}>",
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cx.sess.codemap.span_to_str(expr.span))
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}
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ast::ExprMatch(..) => {
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format!("<match at {}>",
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cx.sess.codemap.span_to_str(expr.span))
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}
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ast::ExprAssignOp(..) |
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ast::ExprUnary(..) |
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ast::ExprBinary(..) |
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ast::ExprIndex(..) => {
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format!("<method at {}>",
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cx.sess.codemap.span_to_str(expr.span))
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}
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_ => {
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format!("<expression at {}>",
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cx.sess.codemap.span_to_str(expr.span))
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}
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}
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}
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None => {
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format!("<unknown-{}>", node_id)
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}
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_ => { cx.sess.bug(
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format!("ReScope refers to {}",
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ast_map::node_id_to_str(cx.items, node_id,
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token::get_ident_interner()))) }
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}
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}
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// In general, if you are giving a region error message,
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// you should use `explain_region()` or, better yet,
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// `note_and_explain_region()`
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pub fn region_ptr_to_str(cx: ctxt, region: Region) -> ~str {
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region_to_str(cx, "&", true, region)
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}
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pub fn region_to_str(cx: ctxt, prefix: &str, space: bool, region: Region) -> ~str {
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let space_str = if space { " " } else { "" };
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if cx.sess.verbose() {
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return format!("{}{}{}", prefix, region.repr(cx), space_str);
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}
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// These printouts are concise. They do not contain all the information
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// the user might want to diagnose an error, but there is basically no way
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// to fit that into a short string. Hence the recommendation to use
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// `explain_region()` or `note_and_explain_region()`.
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match region {
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ty::ReScope(_) => prefix.to_str(),
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ty::ReEarlyBound(_, _, ident) => cx.sess.str_of(ident).to_owned(),
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ty::ReLateBound(_, br) => bound_region_to_str(cx, prefix, space, br),
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ty::ReFree(ref fr) => bound_region_to_str(cx, prefix, space, fr.bound_region),
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ty::ReInfer(ReSkolemized(_, br)) => {
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bound_region_to_str(cx, prefix, space, br)
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}
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ty::ReInfer(ReVar(_)) => prefix.to_str(),
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ty::ReStatic => format!("{}'static{}", prefix, space_str),
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ty::ReEmpty => format!("{}'<empty>{}", prefix, space_str)
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}
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}
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pub fn mutability_to_str(m: ast::Mutability) -> ~str {
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match m {
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ast::MutMutable => ~"mut ",
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ast::MutImmutable => ~"",
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}
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}
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pub fn mt_to_str(cx: ctxt, m: &mt) -> ~str {
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mt_to_str_wrapped(cx, "", m, "")
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}
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pub fn mt_to_str_wrapped(cx: ctxt, before: &str, m: &mt, after: &str) -> ~str {
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let mstr = mutability_to_str(m.mutbl);
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return format!("{}{}{}{}", mstr, before, ty_to_str(cx, m.ty), after);
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}
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pub fn vstore_to_str(cx: ctxt, vs: ty::vstore) -> ~str {
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match vs {
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ty::vstore_fixed(n) => format!("{}", n),
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ty::vstore_uniq => ~"~",
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ty::vstore_slice(r) => region_ptr_to_str(cx, r)
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}
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}
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pub fn trait_store_to_str(cx: ctxt, s: ty::TraitStore) -> ~str {
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match s {
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ty::UniqTraitStore => ~"~",
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ty::RegionTraitStore(r) => region_ptr_to_str(cx, r)
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}
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}
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pub fn vstore_ty_to_str(cx: ctxt, mt: &mt, vs: ty::vstore) -> ~str {
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match vs {
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ty::vstore_fixed(_) => {
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format!("[{}, .. {}]", mt_to_str(cx, mt), vstore_to_str(cx, vs))
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}
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_ => {
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format!("{}{}", vstore_to_str(cx, vs), mt_to_str_wrapped(cx, "[", mt, "]"))
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}
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}
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}
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pub fn vec_map_to_str<T>(ts: &[T], f: |t: &T| -> ~str) -> ~str {
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let tstrs = ts.map(f);
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format!("[{}]", tstrs.connect(", "))
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}
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pub fn tys_to_str(cx: ctxt, ts: &[t]) -> ~str {
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vec_map_to_str(ts, |t| ty_to_str(cx, *t))
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}
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pub fn fn_sig_to_str(cx: ctxt, typ: &ty::FnSig) -> ~str {
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format!("fn{}{} -> {}",
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typ.binder_id,
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typ.inputs.repr(cx),
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typ.output.repr(cx))
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}
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pub fn trait_ref_to_str(cx: ctxt, trait_ref: &ty::TraitRef) -> ~str {
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trait_ref.user_string(cx)
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}
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pub fn ty_to_str(cx: ctxt, typ: t) -> ~str {
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fn fn_input_to_str(cx: ctxt, input: ty::t) -> ~str {
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ty_to_str(cx, input)
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}
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fn bare_fn_to_str(cx: ctxt,
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purity: ast::Purity,
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abis: AbiSet,
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ident: Option<ast::Ident>,
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sig: &ty::FnSig)
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-> ~str {
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let mut s = if abis.is_rust() {
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~""
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} else {
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format!("extern {} ", abis.to_str())
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};
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match purity {
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ast::ImpureFn => {}
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_ => {
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s.push_str(purity.to_str());
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s.push_char(' ');
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}
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};
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s.push_str("fn");
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match ident {
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Some(i) => {
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s.push_char(' ');
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s.push_str(cx.sess.str_of(i));
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}
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_ => { }
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}
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push_sig_to_str(cx, &mut s, '(', ')', sig);
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return s;
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}
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fn closure_to_str(cx: ctxt, cty: &ty::ClosureTy) -> ~str {
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let is_proc =
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(cty.sigil, cty.onceness) == (ast::OwnedSigil, ast::Once);
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let is_borrowed_closure = cty.sigil == ast::BorrowedSigil;
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let mut s = if is_proc || is_borrowed_closure {
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~""
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} else {
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cty.sigil.to_str()
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};
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match (cty.sigil, cty.region) {
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(ast::ManagedSigil, ty::ReStatic) |
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(ast::OwnedSigil, ty::ReStatic) => {}
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(_, region) => {
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s.push_str(region_to_str(cx, "", true, region));
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}
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}
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match cty.purity {
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ast::ImpureFn => {}
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_ => {
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s.push_str(cty.purity.to_str());
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s.push_char(' ');
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}
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};
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if is_proc {
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s.push_str("proc");
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} else {
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match cty.onceness {
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ast::Many => {}
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ast::Once => {
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s.push_str(cty.onceness.to_str());
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s.push_char(' ');
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}
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};
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if !is_borrowed_closure {
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s.push_str("fn");
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}
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}
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if !is_borrowed_closure {
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// Print bounds before `fn` if this is not a borrowed closure.
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if !cty.bounds.is_empty() {
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s.push_str(":");
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s.push_str(cty.bounds.repr(cx));
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}
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push_sig_to_str(cx, &mut s, '(', ')', &cty.sig);
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} else {
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// Print bounds after the signature if this is a borrowed closure.
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push_sig_to_str(cx, &mut s, '|', '|', &cty.sig);
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if is_borrowed_closure {
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if !cty.bounds.is_empty() {
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s.push_str(":");
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s.push_str(cty.bounds.repr(cx));
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}
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}
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}
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return s;
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}
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fn push_sig_to_str(cx: ctxt,
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s: &mut ~str,
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bra: char,
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ket: char,
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sig: &ty::FnSig) {
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s.push_char(bra);
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let strs = sig.inputs.map(|a| fn_input_to_str(cx, *a));
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s.push_str(strs.connect(", "));
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if sig.variadic {
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s.push_str(", ...");
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}
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s.push_char(ket);
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if ty::get(sig.output).sty != ty_nil {
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s.push_str(" -> ");
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if ty::type_is_bot(sig.output) {
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s.push_char('!');
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} else {
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s.push_str(ty_to_str(cx, sig.output));
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}
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}
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}
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// if there is an id, print that instead of the structural type:
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/*for def_id in ty::type_def_id(typ).iter() {
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// note that this typedef cannot have type parameters
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return ast_map::path_to_str(ty::item_path(cx, *def_id),
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cx.sess.intr());
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}*/
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// pretty print the structural type representation:
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return match ty::get(typ).sty {
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ty_nil => ~"()",
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ty_bot => ~"!",
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ty_bool => ~"bool",
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ty_char => ~"char",
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ty_int(ast::TyI) => ~"int",
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ty_int(t) => ast_util::int_ty_to_str(t),
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ty_uint(ast::TyU) => ~"uint",
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ty_uint(t) => ast_util::uint_ty_to_str(t),
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ty_float(t) => ast_util::float_ty_to_str(t),
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ty_box(typ) => ~"@" + ty_to_str(cx, typ),
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ty_uniq(typ) => ~"~" + ty_to_str(cx, typ),
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ty_ptr(ref tm) => ~"*" + mt_to_str(cx, tm),
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ty_rptr(r, ref tm) => {
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region_ptr_to_str(cx, r) + mt_to_str(cx, tm)
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}
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ty_unboxed_vec(ref tm) => { format!("unboxed_vec<{}>", mt_to_str(cx, tm)) }
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ty_tup(ref elems) => {
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let strs = elems.map(|elem| ty_to_str(cx, *elem));
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~"(" + strs.connect(",") + ")"
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}
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ty_closure(ref f) => {
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closure_to_str(cx, f)
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}
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ty_bare_fn(ref f) => {
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bare_fn_to_str(cx, f.purity, f.abis, None, &f.sig)
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}
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ty_infer(infer_ty) => infer_ty.to_str(),
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ty_err => ~"[type error]",
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ty_param(param_ty {idx: id, def_id: did}) => {
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let ty_param_defs = cx.ty_param_defs.borrow();
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let param_def = ty_param_defs.get().find(&did.node);
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let ident = match param_def {
|
|
Some(def) => cx.sess.str_of(def.ident).to_owned(),
|
|
None => {
|
|
// This should not happen...
|
|
format!("BUG[{:?}]", id)
|
|
}
|
|
};
|
|
if !cx.sess.verbose() { ident } else { format!("{}:{:?}", ident, did) }
|
|
}
|
|
ty_self(..) => ~"Self",
|
|
ty_enum(did, ref substs) | ty_struct(did, ref substs) => {
|
|
let path = ty::item_path(cx, did);
|
|
let base = ast_map::path_to_str(path, cx.sess.intr());
|
|
parameterized(cx, base, &substs.regions, substs.tps, did, false)
|
|
}
|
|
ty_trait(did, ref substs, s, mutbl, ref bounds) => {
|
|
let path = ty::item_path(cx, did);
|
|
let base = ast_map::path_to_str(path, cx.sess.intr());
|
|
let ty = parameterized(cx, base, &substs.regions,
|
|
substs.tps, did, true);
|
|
let bound_sep = if bounds.is_empty() { "" } else { ":" };
|
|
let bound_str = bounds.repr(cx);
|
|
format!("{}{}{}{}{}", trait_store_to_str(cx, s), mutability_to_str(mutbl), ty,
|
|
bound_sep, bound_str)
|
|
}
|
|
ty_vec(ref mt, vs) => {
|
|
vstore_ty_to_str(cx, mt, vs)
|
|
}
|
|
ty_str(vs) => format!("{}{}", vstore_to_str(cx, vs), "str")
|
|
}
|
|
}
|
|
|
|
pub fn parameterized(cx: ctxt,
|
|
base: &str,
|
|
regions: &ty::RegionSubsts,
|
|
tps: &[ty::t],
|
|
did: ast::DefId,
|
|
is_trait: bool) -> ~str {
|
|
|
|
let mut strs = ~[];
|
|
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: tps.to_owned(),
|
|
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!("{}<{}>", base, strs.connect(","))
|
|
} else {
|
|
format!("{}", base)
|
|
}
|
|
}
|
|
|
|
pub fn ty_to_short_str(cx: ctxt, typ: t) -> ~str {
|
|
let mut s = encoder::encoded_ty(cx, typ);
|
|
if s.len() >= 32u { s = s.slice(0u, 32u).to_owned(); }
|
|
return s;
|
|
}
|
|
|
|
impl<T:Repr> Repr for Option<T> {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match self {
|
|
&None => ~"None",
|
|
&Some(ref t) => t.repr(tcx),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<T:Repr,U:Repr> Repr for Result<T,U> {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match self {
|
|
&Ok(ref t) => t.repr(tcx),
|
|
&Err(ref u) => format!("Err({})", u.repr(tcx))
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for () {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
~"()"
|
|
}
|
|
}
|
|
|
|
impl<T:Repr> Repr for @T {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
(&**self).repr(tcx)
|
|
}
|
|
}
|
|
|
|
impl<T:Repr> Repr for ~T {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
(&**self).repr(tcx)
|
|
}
|
|
}
|
|
|
|
fn repr_vec<T:Repr>(tcx: ctxt, v: &[T]) -> ~str {
|
|
vec_map_to_str(v, |t| t.repr(tcx))
|
|
}
|
|
|
|
impl<'a, T:Repr> Repr for &'a [T] {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
repr_vec(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl<T:Repr> Repr for OptVec<T> {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match *self {
|
|
opt_vec::Empty => ~"[]",
|
|
opt_vec::Vec(ref v) => repr_vec(tcx, *v)
|
|
}
|
|
}
|
|
}
|
|
|
|
// This is necessary to handle types like Option<~[T]>, for which
|
|
// autoderef cannot convert the &[T] handler
|
|
impl<T:Repr> Repr for ~[T] {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
repr_vec(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::TypeParameterDef {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("TypeParameterDef({:?}, {})",
|
|
self.def_id,
|
|
self.bounds.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::RegionParameterDef {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("RegionParameterDef({}, {:?})",
|
|
tcx.sess.str_of(self.ident),
|
|
self.def_id)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::t {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
ty_to_str(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::substs {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("substs(regions={}, self_ty={}, tps={})",
|
|
self.regions.repr(tcx),
|
|
self.self_ty.repr(tcx),
|
|
self.tps.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::RegionSubsts {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match *self {
|
|
ty::ErasedRegions => ~"erased",
|
|
ty::NonerasedRegions(ref regions) => regions.repr(tcx)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::ParamBounds {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
let mut res = ~[];
|
|
for b in self.builtin_bounds.iter() {
|
|
res.push(match b {
|
|
ty::BoundStatic => ~"'static",
|
|
ty::BoundSend => ~"Send",
|
|
ty::BoundFreeze => ~"Freeze",
|
|
ty::BoundSized => ~"Sized",
|
|
ty::BoundPod => ~"Pod",
|
|
});
|
|
}
|
|
for t in self.trait_bounds.iter() {
|
|
res.push(t.repr(tcx));
|
|
}
|
|
res.connect("+")
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::TraitRef {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
trait_ref_to_str(tcx, self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Expr {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("expr({}: {})",
|
|
self.id,
|
|
pprust::expr_to_str(self, tcx.sess.intr()))
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Item {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("item({})",
|
|
ast_map::node_id_to_str(tcx.items,
|
|
self.id,
|
|
token::get_ident_interner()))
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Stmt {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("stmt({}: {})",
|
|
ast_util::stmt_id(self),
|
|
pprust::stmt_to_str(self, tcx.sess.intr()))
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Pat {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("pat({}: {})",
|
|
self.id,
|
|
pprust::pat_to_str(self, tcx.sess.intr()))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BoundRegion {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match *self {
|
|
ty::BrAnon(id) => format!("BrAnon({})", id),
|
|
ty::BrNamed(id, ident) => format!("BrNamed({}, {})",
|
|
id.repr(tcx),
|
|
ident.repr(tcx)),
|
|
ty::BrFresh(id) => format!("BrFresh({})", id),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::Region {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match *self {
|
|
ty::ReEarlyBound(id, index, ident) => {
|
|
format!("ReEarlyBound({}, {}, {})",
|
|
id, index, ident.repr(tcx))
|
|
}
|
|
|
|
ty::ReLateBound(binder_id, ref bound_region) => {
|
|
format!("ReLateBound({}, {})",
|
|
binder_id, bound_region.repr(tcx))
|
|
}
|
|
|
|
ty::ReFree(ref fr) => {
|
|
format!("ReFree({}, {})",
|
|
fr.scope_id,
|
|
fr.bound_region.repr(tcx))
|
|
}
|
|
|
|
ty::ReScope(id) => {
|
|
format!("ReScope({})", id)
|
|
}
|
|
|
|
ty::ReStatic => {
|
|
format!("ReStatic")
|
|
}
|
|
|
|
ty::ReInfer(ReVar(ref vid)) => {
|
|
format!("ReInfer({})", vid.id)
|
|
}
|
|
|
|
ty::ReInfer(ReSkolemized(id, ref bound_region)) => {
|
|
format!("re_skolemized({}, {})",
|
|
id, bound_region.repr(tcx))
|
|
}
|
|
|
|
ty::ReEmpty => {
|
|
format!("ReEmpty")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::DefId {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
// 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.crate == ast::LOCAL_CRATE {
|
|
{
|
|
match tcx.items.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));
|
|
}
|
|
_ => {}
|
|
}
|
|
}
|
|
}
|
|
return format!("{:?}", *self);
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::ty_param_bounds_and_ty {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("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) -> ~str {
|
|
format!("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) -> ~str {
|
|
format!("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) -> ~str {
|
|
self.to_str().to_owned()
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::Method {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
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::Ident {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
let string = token::get_ident(self.name);
|
|
string.get().to_str()
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::ExplicitSelf_ {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
format!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ast::Visibility {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
format!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BareFnTy {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("BareFnTy \\{purity: {:?}, abis: {}, sig: {}\\}",
|
|
self.purity,
|
|
self.abis.to_str(),
|
|
self.sig.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::FnSig {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
fn_sig_to_str(tcx, self)
|
|
}
|
|
}
|
|
|
|
impl Repr for typeck::method_map_entry {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("method_map_entry \\{origin: {}\\}", self.origin.repr(tcx))
|
|
}
|
|
}
|
|
|
|
impl Repr for typeck::method_origin {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match self {
|
|
&typeck::method_static(def_id) => {
|
|
format!("method_static({})", def_id.repr(tcx))
|
|
}
|
|
&typeck::method_param(ref p) => {
|
|
p.repr(tcx)
|
|
}
|
|
&typeck::method_object(ref p) => {
|
|
p.repr(tcx)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for typeck::method_param {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("method_param({},{:?},{:?},{:?})",
|
|
self.trait_id.repr(tcx),
|
|
self.method_num,
|
|
self.param_num,
|
|
self.bound_num)
|
|
}
|
|
}
|
|
|
|
impl Repr for typeck::method_object {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("method_object({},{:?},{:?})",
|
|
self.trait_id.repr(tcx),
|
|
self.method_num,
|
|
self.real_index)
|
|
}
|
|
}
|
|
|
|
|
|
impl Repr for ty::RegionVid {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
format!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::TraitStore {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match self {
|
|
&ty::UniqTraitStore => ~"~Trait",
|
|
&ty::RegionTraitStore(r) => format!("&{} Trait", r.repr(tcx))
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::vstore {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
vstore_to_str(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ast_map::PathElem {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
match *self {
|
|
ast_map::PathMod(id) => id.repr(tcx),
|
|
ast_map::PathName(id) => id.repr(tcx),
|
|
ast_map::PathPrettyName(id, _) => id.repr(tcx),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BuiltinBound {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
format!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl UserString for ty::BuiltinBound {
|
|
fn user_string(&self, _tcx: ctxt) -> ~str {
|
|
match *self {
|
|
ty::BoundStatic => ~"'static",
|
|
ty::BoundSend => ~"Send",
|
|
ty::BoundFreeze => ~"Freeze",
|
|
ty::BoundSized => ~"Sized",
|
|
ty::BoundPod => ~"Pod",
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BuiltinBounds {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
self.user_string(tcx)
|
|
}
|
|
}
|
|
|
|
impl Repr for Span {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
tcx.sess.codemap.span_to_str(*self)
|
|
}
|
|
}
|
|
|
|
impl<A:UserString> UserString for @A {
|
|
fn user_string(&self, tcx: ctxt) -> ~str {
|
|
let this: &A = &**self;
|
|
this.user_string(tcx)
|
|
}
|
|
}
|
|
|
|
impl UserString for ty::BuiltinBounds {
|
|
fn user_string(&self, tcx: ctxt) -> ~str {
|
|
if self.is_empty() { ~"<no-bounds>" } else {
|
|
let mut result = ~[];
|
|
for bb in self.iter() {
|
|
result.push(bb.user_string(tcx));
|
|
}
|
|
result.connect("+")
|
|
}
|
|
}
|
|
}
|
|
|
|
impl UserString for ty::TraitRef {
|
|
fn user_string(&self, tcx: ctxt) -> ~str {
|
|
let path = ty::item_path(tcx, self.def_id);
|
|
let base = ast_map::path_to_str(path, tcx.sess.intr());
|
|
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, &self.substs.regions,
|
|
all_tps, self.def_id, true)
|
|
} else {
|
|
parameterized(tcx, base, &self.substs.regions,
|
|
self.substs.tps, self.def_id, true)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl UserString for ty::t {
|
|
fn user_string(&self, tcx: ctxt) -> ~str {
|
|
ty_to_str(tcx, *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for AbiSet {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
self.to_str()
|
|
}
|
|
}
|
|
|
|
impl UserString for AbiSet {
|
|
fn user_string(&self, _tcx: ctxt) -> ~str {
|
|
self.to_str()
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::UpvarId {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("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) -> ~str {
|
|
format!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::BorrowKind {
|
|
fn repr(&self, _tcx: ctxt) -> ~str {
|
|
format!("{:?}", *self)
|
|
}
|
|
}
|
|
|
|
impl Repr for ty::UpvarBorrow {
|
|
fn repr(&self, tcx: ctxt) -> ~str {
|
|
format!("UpvarBorrow({}, {})",
|
|
self.kind.repr(tcx),
|
|
self.region.repr(tcx))
|
|
}
|
|
}
|