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Introduce a T_err type for type errors

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This allows more errors to be non-fatal, as per #1871.

I only went through and started changing span_fatal to span_err in
check.rs. There are probably more errors that could be made
non-fatal. So if you see derived type errors appearing from now on,
file a bug!

r=graydon

Closes #1871
This commit is contained in:
Tim Chevalier 2012-11-16 19:22:48 -08:00
parent 77ef4e7176
commit ef833d4101
15 changed files with 256 additions and 146 deletions
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3
src/librustc/util/ppaux.rs
View file

@ -9,7 +9,7 @@ use middle::ty::{mt, t, param_bound};
use middle::ty::{re_bound, re_free, re_scope, re_infer, re_static, Region};
use middle::ty::{ReSkolemized, ReVar};
use middle::ty::{ty_bool, ty_bot, ty_box, ty_class, ty_enum};
use middle::ty::{ty_estr, ty_evec, ty_float, ty_fn, ty_trait, ty_int};
use middle::ty::{ty_err, ty_estr, ty_evec, ty_float, ty_fn, ty_trait, ty_int};
use middle::ty::{ty_nil, ty_opaque_box, ty_opaque_closure_ptr, ty_param};
use middle::ty::{ty_ptr, ty_rec, ty_rptr, ty_self, ty_tup};
use middle::ty::{ty_type, ty_uniq, ty_uint, ty_infer};
@ -390,6 +390,7 @@ fn ty_to_str(cx: ctxt, typ: t) -> ~str {
f.meta.ret_style)
}
ty_infer(infer_ty) => infer_ty.to_str(),
ty_err => ~"[type error]",
ty_param({idx: id, _}) => {
~"'" + str::from_bytes(~[('a' as u8) + (id as u8)])
}