Properly translate calls to default methods in a number of cases. Closes #4350.
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@ -207,7 +207,9 @@ pub fn trans_method_callee(bcx: block,
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let method_name =
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ty::trait_method(tcx, trait_id, method_index).ident;
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let method_id =
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method_with_name(bcx.ccx(), impl_def_id, method_name);
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method_with_name_or_default(bcx.ccx(),
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impl_def_id,
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method_name);
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origin = typeck::method_static(method_id);
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}
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typeck::method_super(trait_id, method_index) => {
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@ -229,7 +231,8 @@ pub fn trans_method_callee(bcx: block,
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ty::method(tcx, supertrait_method_def_ids[method_index]).ident;
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// Now that we know the impl ID, we can look up the method
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// ID from its name
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origin = typeck::method_static(method_with_name(bcx.ccx(),
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origin = typeck::method_static(
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method_with_name_or_default(bcx.ccx(),
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impl_id,
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method_name));
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}
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@ -345,7 +348,9 @@ pub fn trans_static_method_callee(bcx: block,
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typeck::vtable_static(impl_did, ref rcvr_substs, rcvr_origins) => {
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assert!(rcvr_substs.all(|t| !ty::type_needs_infer(*t)));
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let mth_id = method_with_name(bcx.ccx(), impl_did, mname);
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let mth_id = method_with_name_or_default(bcx.ccx(),
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impl_did,
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mname);
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let callee_substs = combine_impl_and_methods_tps(
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bcx, mth_id, impl_did, callee_id, *rcvr_substs);
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let callee_origins = combine_impl_and_methods_origins(
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@ -374,23 +379,6 @@ pub fn method_from_methods(ms: &[@ast::method], name: ast::ident)
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ms.find(|m| m.ident == name).map(|m| ast_util::local_def(m.id))
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}
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pub fn method_with_name(ccx: @CrateContext, impl_id: ast::def_id,
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name: ast::ident) -> ast::def_id {
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if impl_id.crate == ast::local_crate {
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match ccx.tcx.items.get_copy(&impl_id.node) {
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ast_map::node_item(@ast::item {
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node: ast::item_impl(_, _, _, ref ms),
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_
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}, _) => {
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method_from_methods(*ms, name).get()
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}
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_ => fail!("method_with_name")
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}
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} else {
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csearch::get_impl_method(ccx.sess.cstore, impl_id, name)
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}
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}
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pub fn method_with_name_or_default(ccx: @CrateContext,
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impl_id: ast::def_id,
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name: ast::ident) -> ast::def_id {
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@ -770,17 +758,17 @@ pub fn vtable_id(ccx: @CrateContext,
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/// Creates a returns a dynamic vtable for the given type and vtable origin.
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/// This is used only for objects.
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pub fn get_vtable(ccx: @CrateContext,
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pub fn get_vtable(bcx: block,
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self_ty: ty::t,
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origin: typeck::vtable_origin)
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-> ValueRef {
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let hash_id = vtable_id(ccx, &origin);
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match ccx.vtables.find(&hash_id) {
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let hash_id = vtable_id(bcx.ccx(), &origin);
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match bcx.ccx().vtables.find(&hash_id) {
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Some(&val) => val,
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None => {
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match origin {
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typeck::vtable_static(id, substs, sub_vtables) => {
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make_impl_vtable(ccx, id, self_ty, substs, sub_vtables)
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make_impl_vtable(bcx, id, self_ty, substs, sub_vtables)
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}
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_ => fail!("get_vtable: expected a static origin"),
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}
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@ -814,12 +802,13 @@ pub fn make_vtable(ccx: @CrateContext,
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}
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/// Generates a dynamic vtable for objects.
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pub fn make_impl_vtable(ccx: @CrateContext,
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pub fn make_impl_vtable(bcx: block,
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impl_id: ast::def_id,
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self_ty: ty::t,
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substs: ~[ty::t],
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vtables: typeck::vtable_res)
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-> ValueRef {
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let ccx = bcx.ccx();
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let _icx = ccx.insn_ctxt("impl::make_impl_vtable");
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let tcx = ccx.tcx;
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@ -829,9 +818,6 @@ pub fn make_impl_vtable(ccx: @CrateContext,
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make a vtable for a type impl!")
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};
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let has_tps =
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!ty::lookup_item_type(ccx.tcx, impl_id).generics.type_param_defs.is_empty();
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let trait_method_def_ids = ty::trait_method_def_ids(tcx, trt_id);
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let methods = do trait_method_def_ids.map |method_def_id| {
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let im = ty::method(tcx, *method_def_id);
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@ -846,22 +832,11 @@ pub fn make_impl_vtable(ccx: @CrateContext,
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} else {
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debug!("(making impl vtable) adding method to vtable: %s",
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*tcx.sess.str_of(im.ident));
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let mut m_id = method_with_name(ccx, impl_id, im.ident);
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if has_tps {
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// If the method is in another crate, need to make an inlined
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// copy first
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if m_id.crate != ast::local_crate {
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// XXX: Set impl ID here?
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m_id = inline::maybe_instantiate_inline(ccx, m_id, true);
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}
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let (val, _) = monomorphize::monomorphic_fn(ccx, m_id, substs,
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Some(vtables), None, None);
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val
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} else if m_id.crate == ast::local_crate {
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get_item_val(ccx, m_id.node)
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} else {
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trans_external_path(ccx, m_id, fty)
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}
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let m_id = method_with_name_or_default(ccx, impl_id, im.ident);
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trans_fn_ref_with_vtables(bcx, m_id, 0,
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substs, Some(vtables)).llfn
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}
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};
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@ -903,7 +878,7 @@ pub fn trans_trait_cast(bcx: block,
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// Store the vtable into the pair or triple.
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let orig = /*bad*/copy ccx.maps.vtable_map.get(&id)[0];
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let orig = resolve_vtable_in_fn_ctxt(bcx.fcx, orig);
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let vtable = get_vtable(bcx.ccx(), v_ty, orig);
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let vtable = get_vtable(bcx, v_ty, orig);
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Store(bcx, vtable, PointerCast(bcx,
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GEPi(bcx, lldest, [0u, abi::trt_field_vtable]),
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T_ptr(val_ty(vtable))));
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@ -8,9 +8,7 @@
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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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//xfail-test
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// Currently failing with an ICE in trans. (FIXME: #4350)
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#[allow(default_methods)];
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trait Cat {
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fn meow(&self) -> bool;
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