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https://github.com/carbon-language/carbon-lang.git
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Dana Jansens
71eed5b04a
Any non-extend require decls must be satisfied when the impl definition starts, but they are not checked. We only check for require decls in the target interface being impld.
131 lines
2.7 KiB
Plaintext
131 lines
2.7 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/require_satisified_in_named_constraint.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/require_satisified_in_named_constraint.carbon
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// --- todo_fail_missing_require_for_concrete_type.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {}
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constraint N {
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extend require impls Y;
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require impls Z;
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}
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// () does not need to impl Z yet.
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impl () as N;
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// () needs to impl Z at the start of the definition.
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// TODO: RequireImplsNotImplemented error that () does not implement Z.
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impl () as N {}
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// --- todo_fail_missing_require_for_symbolic_type.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {}
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constraint N {
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extend require impls Y;
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require impls Z;
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}
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// T does not need to impl Z yet.
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impl forall [T:! type] T as N;
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// T needs to impl Z at the start of the definition.
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// TODO: RequireImplsNotImplemented error that () does not implement Z.
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impl forall [T:! type] T as N {}
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// --- require_for_concrete_type.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {}
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constraint N {
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extend require impls Y;
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require impls Z;
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}
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// () does not need to impl Z yet.
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impl () as N;
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// Now we know () impls Z.
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impl () as Z;
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// So no error here.
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impl () as N {}
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impl () as Z {}
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// --- require_for_symbolic_type.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {}
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constraint N {
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extend require impls Y;
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require impls Z;
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}
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// T does not need to impl Z yet.
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impl forall [T:! type] T as N;
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// Now we know T impls Z.
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impl forall [T:! type] T as Z;
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// So no error here.
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impl forall [T:! type] T as N {}
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impl forall [T:! type] T as Z {}
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// --- require_for_symbolic_type_impl_matches_same_interface.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {}
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constraint N {
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extend require impls Y;
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require impls Z;
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}
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// This only matches T that impl Z so no error here.
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impl forall [T:! Z] T as N {}
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// --- require_for_generic_interfaces.carbon
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library "[[@TEST_NAME]]";
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interface Y(T:! type) {}
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interface Z(T:! type) {}
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class A;
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class B;
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constraint N(U:! type) {
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extend require impls Y(U);
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require impls Z(B);
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}
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// () does not need to impl Z(B) yet.
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impl () as N(A);
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// Now we know () impls Z(B).
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impl () as Z(B);
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// So no error here.
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impl () as N(A) {}
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impl () as Z(B) {}
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