use core::default::Default;
use core::fmt::Show;
use core::fmt;
+// NOTE(stage0) remove import after a snapshot
+#[cfg(stage0)]
use core::hash::Hash;
use core::iter::{Peekable, Map, FromIterator};
use core::ops::{BitOr, BitAnd, BitXor, Sub};
use collections::HashMap;
use ffi::CString;
use fmt;
+// NOTE(stage0) remove import after a snapshot
+#[cfg(stage0)]
use hash::Hash;
use io::pipe::{PipeStream, PipePair};
use io::{IoResult, IoError};
[ref state_expr] => state_expr,
_ => cx.span_bug(trait_span, "incorrect number of arguments in `deriving(Hash)`")
};
- let hash_ident = substr.method_ident;
+ let hash_path = {
+ let strs = vec![
+ cx.ident_of("std"),
+ cx.ident_of("hash"),
+ cx.ident_of("Hash"),
+ cx.ident_of("hash"),
+ ];
+
+ cx.expr_path(cx.path_global(trait_span, strs))
+ };
let call_hash = |&: span, thing_expr| {
- let expr = cx.expr_method_call(span, thing_expr, hash_ident, vec!(state_expr.clone()));
+ let ref_thing = cx.expr_addr_of(span, thing_expr);
+ let expr = cx.expr_call(span, hash_path.clone(), vec!(ref_thing, state_expr.clone()));
cx.stmt_expr(expr)
};
let mut stmts = Vec::new();
--- /dev/null
+// Copyright 2015 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.
+
+struct Bar;
+
+impl Bar {
+ fn hash<T>(&self, _: T) {}
+}
+
+#[derive(Hash)]
+//~^ error: the trait `core::hash::Hash<__S>` is not implemented for the type `Bar`
+struct Foo(Bar);
+
+fn main() {}