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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>
63 lines
2.6 KiB
Plaintext
63 lines
2.6 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/class/fail_self.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/class/fail_self.carbon
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class Class {
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// CHECK:STDERR: fail_self.carbon:[[@LINE+4]]:8: error: `self` can only be declared in an implicit parameter list [SelfOutsideImplicitParamList]
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// CHECK:STDERR: fn F(self: Self);
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// CHECK:STDERR: ^~~~~~~~~~
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// CHECK:STDERR:
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fn F(self: Self);
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fn G() -> Self;
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}
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// CHECK:STDERR: fail_self.carbon:[[@LINE+4]]:19: error: `self` can only be declared in an implicit parameter list [SelfOutsideImplicitParamList]
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// CHECK:STDERR: fn Class.F(unused self: Self) {
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// CHECK:STDERR: ^~~~~~~~~~
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// CHECK:STDERR:
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fn Class.F(unused self: Self) {
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}
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fn Class.G() -> Self {
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// CHECK:STDERR: fail_self.carbon:[[@LINE+4]]:7: error: `self` can only be declared in an implicit parameter list [SelfOutsideImplicitParamList]
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// CHECK:STDERR: var self: Self;
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// CHECK:STDERR: ^~~~~~~~~~
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// CHECK:STDERR:
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var self: Self;
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// CHECK:STDERR: fail_self.carbon:[[@LINE+7]]:10: error: cannot copy value of type `Class` [CopyOfUncopyableType]
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// CHECK:STDERR: return self;
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR: fail_self.carbon:[[@LINE+4]]:10: note: type `Class` does not implement interface `Core.Copy` [MissingImplInMemberAccessNote]
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// CHECK:STDERR: return self;
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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return self;
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}
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class WrongSelf {
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fn F[self: Class]();
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}
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fn CallWrongSelf(ws: WrongSelf) {
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// CHECK:STDERR: fail_self.carbon:[[@LINE+10]]:3: error: cannot implicitly convert expression of type `WrongSelf` to `Class` [ConversionFailure]
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// CHECK:STDERR: ws.F();
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// CHECK:STDERR: ^~
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// CHECK:STDERR: fail_self.carbon:[[@LINE+7]]:3: note: type `WrongSelf` does not implement interface `Core.ImplicitAs(Class)` [MissingImplInMemberAccessNote]
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// CHECK:STDERR: ws.F();
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// CHECK:STDERR: ^~
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// CHECK:STDERR: fail_self.carbon:[[@LINE-10]]:8: note: initializing function parameter [InCallToFunctionParam]
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// CHECK:STDERR: fn F[self: Class]();
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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ws.F();
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}
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