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fdb188ccfd
Implementation of unused pattern bindings #2022, continued. Whereas previous PR #6460 took care of parsing, and PR #6479 prepared the stage by using _ in some test cases, this PR has the the actual implementation, using a simple dataflow analysis. --------- Co-authored-by: Burak Emir <bqe@google.com> Co-authored-by: jonmeow <jperkins@google.com>
125 lines
5.6 KiB
Plaintext
125 lines
5.6 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/convert.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/using_invalid_interface.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/using_invalid_interface.carbon
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// --- fail_invalid_interface.carbon
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library "[[@TEST_NAME]]";
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interface I {}
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class ArgToI(T:! I) {}
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interface IMisuse {
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let Arg:! type;
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// CHECK:STDERR: fail_invalid_interface.carbon:[[@LINE+7]]:26: error: cannot convert type `Arg` into type implementing `I` [ConversionFailureTypeToFacet]
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// CHECK:STDERR: fn Op[self: Self]() -> ArgToI(Arg);
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR: fail_invalid_interface.carbon:[[@LINE-7]]:14: note: initializing generic parameter `T` declared here [InitializingGenericParam]
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// CHECK:STDERR: class ArgToI(T:! I) {}
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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fn Op[self: Self]() -> ArgToI(Arg);
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}
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// --- fail_misusing_invalid_interface.carbon
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library "[[@TEST_NAME]]";
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// This import boundary is significant.
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import library "invalid_interface";
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class C {
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE+4]]:32: error: name `T` not found [NameNotFound]
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// CHECK:STDERR: impl as IMisuse where .Arg = T {
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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impl as IMisuse where .Arg = T {
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE+4]]:42: error: name `T` not found [NameNotFound]
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// CHECK:STDERR: fn Op[unused self: Self]() -> ArgToI(T) {
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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fn Op[unused self: Self]() -> ArgToI(T) {
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return {};
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}
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}
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}
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE+8]]:21: error: missing object argument in method call [MissingObjectInMethodCall]
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// CHECK:STDERR: fn F(T:! IMisuse) { T.Op(); }
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE-21]]:1: in import [InImport]
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// CHECK:STDERR: fail_invalid_interface.carbon:16:3: note: calling function declared here [InCallToFunction]
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// CHECK:STDERR: fn Op[self: Self]() -> ArgToI(Arg);
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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fn F(T:! IMisuse) { T.Op(); }
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fn G() {
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var c: C;
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE+10]]:3: error: cannot implicitly convert non-type value of type `C` into type implementing `IMisuse` [ConversionFailureNonTypeToFacet]
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// CHECK:STDERR: F(c);
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE+7]]:3: note: type `C` does not implement interface `Core.ImplicitAs(IMisuse)` [MissingImplInMemberAccessNote]
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// CHECK:STDERR: F(c);
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR: fail_misusing_invalid_interface.carbon:[[@LINE-10]]:6: note: initializing generic parameter `T` declared here [InitializingGenericParam]
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// CHECK:STDERR: fn F(T:! IMisuse) { T.Op(); }
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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F(c);
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}
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// --- fail_using_invalid_interface.carbon
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library "[[@TEST_NAME]]";
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// This import boundary is significant.
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import library "invalid_interface";
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class ArgC {}
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class C {
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impl as IMisuse where .Arg = ArgC {
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE+8]]:35: error: cannot convert type `ArgC` into type implementing `I` [ConversionFailureTypeToFacet]
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// CHECK:STDERR: fn Op[unused self: Self]() -> ArgToI(ArgC) {
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// CHECK:STDERR: ^~~~~~~~~~~~
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE-9]]:1: in import [InImport]
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// CHECK:STDERR: fail_invalid_interface.carbon:5:14: note: initializing generic parameter `T` declared here [InitializingGenericParam]
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// CHECK:STDERR: class ArgToI(T:! I) {}
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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fn Op[unused self: Self]() -> ArgToI(ArgC) {
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return {};
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}
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}
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}
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE+8]]:21: error: missing object argument in method call [MissingObjectInMethodCall]
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// CHECK:STDERR: fn F(T:! IMisuse) { T.Op(); }
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE-23]]:1: in import [InImport]
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// CHECK:STDERR: fail_invalid_interface.carbon:16:3: note: calling function declared here [InCallToFunction]
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// CHECK:STDERR: fn Op[self: Self]() -> ArgToI(Arg);
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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fn F(T:! IMisuse) { T.Op(); }
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fn G() {
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var c: C;
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE+10]]:3: error: cannot implicitly convert non-type value of type `C` into type implementing `IMisuse` [ConversionFailureNonTypeToFacet]
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// CHECK:STDERR: F(c);
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE+7]]:3: note: type `C` does not implement interface `Core.ImplicitAs(IMisuse)` [MissingImplInMemberAccessNote]
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// CHECK:STDERR: F(c);
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR: fail_using_invalid_interface.carbon:[[@LINE-10]]:6: note: initializing generic parameter `T` declared here [InitializingGenericParam]
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// CHECK:STDERR: fn F(T:! IMisuse) { T.Op(); }
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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F(c);
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}
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