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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>
233 lines
6.7 KiB
Plaintext
233 lines
6.7 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/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/facet/combine.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/facet/combine.carbon
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// --- fail_name_collision.carbon
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library "[[@TEST_NAME]]";
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interface A {
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fn G();
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}
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interface B {
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fn G();
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}
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class C {}
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impl C as A {
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fn G();
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}
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impl C as B {
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fn G() {}
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}
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fn F() {
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// TODO: This error message is wrong here, we are not using `extend`.
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// CHECK:STDERR: fail_name_collision.carbon:[[@LINE+4]]:14: error: ambiguous use of name `G` found in multiple extended scopes [NameAmbiguousDueToExtend]
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// CHECK:STDERR: ({} as C).((A & B).G)();
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// CHECK:STDERR: ^~~~~~~~~
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// CHECK:STDERR:
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({} as C).((A & B).G)();
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}
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// --- combine.carbon
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library "[[@TEST_NAME]]";
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interface A {}
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interface B {
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fn BB[self: Self]();
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}
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class C {}
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impl C as A {}
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impl C as B {
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fn BB[unused self: Self]() {}
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}
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fn G[T:! A & B](unused t: T) {}
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fn F() {
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({} as C).((A & B).BB)();
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(({} as C) as (C as (A & B))).((A & B).BB)();
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(({} as C) as (C as (A & B))).(B.BB)();
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G({} as C);
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}
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// --- generic_interface.carbon
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library "[[@TEST_NAME]]";
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interface A(T:! type) {}
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interface B {}
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class P1 {}
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class P2 {}
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class C {}
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impl C as A(P1) {}
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impl C as B {}
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fn G[T:! A(P1) & B](unused t: T) {}
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fn F() {
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G({} as C);
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}
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// --- fail_wrong_generic_interface.carbon
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library "[[@TEST_NAME]]";
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interface A(T:! type) {}
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interface B {}
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class P1 {}
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class P2 {}
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class C {}
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impl C as A(P1) {}
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impl C as B {}
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fn G[T:! A(P2) & B](unused t: T) {}
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fn F() {
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// CHECK:STDERR: fail_wrong_generic_interface.carbon:[[@LINE+7]]:3: error: cannot convert type `C` into type implementing `A(P2) & B` [ConversionFailureTypeToFacet]
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// CHECK:STDERR: G({} as C);
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// CHECK:STDERR: ^~~~~~~~~~
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// CHECK:STDERR: fail_wrong_generic_interface.carbon:[[@LINE-6]]:1: note: while deducing parameters of generic declared here [DeductionGenericHere]
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// CHECK:STDERR: fn G[T:! A(P2) & B](unused t: T) {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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G({} as C);
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}
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// --- generic_forall_impl.carbon
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library "[[@TEST_NAME]]";
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interface Iface {}
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interface GenericIface(T:! type) {}
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class GenericClass(T:! type) {}
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class ImplIface {}
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impl ImplIface as Iface {}
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class C {}
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impl C as Iface {}
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impl forall [IfaceType:! Iface] C as GenericIface(GenericClass(IfaceType)) {}
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fn G[T:! Iface & GenericIface(GenericClass(ImplIface))](unused t: T) {}
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fn F() {
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G({} as C);
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}
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// --- compare_equal.carbon
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library "[[@TEST_NAME]]";
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class WrapType(T:! type) {}
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fn AssertSame[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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fn Type(T:! type) -> WrapType(T) { return {}; }
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interface I;
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interface J;
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interface K(T:! type);
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fn TestIncomplete() {
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AssertSame(Type(I), Type(I & I));
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AssertSame(Type(I), Type(I & I & I));
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AssertSame(Type(I & J), Type(J & I));
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AssertSame(Type(I & J), Type(I & I & J));
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AssertSame(Type(I & J), Type(I & J & I));
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AssertSame(Type(I & J), Type(J & I & I));
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AssertSame(Type(I & K({})), Type(K({}) & I));
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AssertSame(Type(I & K({}) & K(())), Type(K(()) & K({}) & I));
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}
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interface I {}
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interface J {}
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interface K(T:! type) {}
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fn TestComplete() {
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AssertSame(Type(I), Type(I & I));
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AssertSame(Type(I), Type(I & I & I));
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AssertSame(Type(I & J), Type(J & I));
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AssertSame(Type(I & J), Type(I & I & J));
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AssertSame(Type(I & J), Type(I & J & I));
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AssertSame(Type(I & J), Type(J & I & I));
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AssertSame(Type(I & K({})), Type(K({}) & I));
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AssertSame(Type(I & K({}) & K(())), Type(K(()) & K({}) & I));
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}
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// --- fail_compare_not_equal.carbon
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library "[[@TEST_NAME]]";
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class WrapType(T:! type) {}
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fn Same[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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fn Type(T:! type) -> WrapType(T) { return {}; }
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interface I {}
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interface J {}
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interface K {}
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fn Test() {
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// CHECK:STDERR: fail_compare_not_equal.carbon:[[@LINE+7]]:3: error: inconsistent deductions for value of generic parameter `T` [DeductionInconsistent]
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// CHECK:STDERR: Same(Type(I & J), Type(K & I & J));
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_compare_not_equal.carbon:[[@LINE-11]]:1: note: while deducing parameters of generic declared here [DeductionGenericHere]
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// CHECK:STDERR: fn Same[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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Same(Type(I & J), Type(K & I & J));
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}
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// --- fail_compare_not_equal_parameterized.carbon
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library "[[@TEST_NAME]]";
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class WrapType(T:! type) {}
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fn Same[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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fn Type(T:! type) -> WrapType(T) { return {}; }
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interface I {}
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interface J(T:! type) {}
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fn Test() {
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// CHECK:STDERR: fail_compare_not_equal_parameterized.carbon:[[@LINE+7]]:3: error: inconsistent deductions for value of generic parameter `T` [DeductionInconsistent]
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// CHECK:STDERR: Same(Type(I & J(())), Type(J({}) & I));
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_compare_not_equal_parameterized.carbon:[[@LINE-10]]:1: note: while deducing parameters of generic declared here [DeductionGenericHere]
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// CHECK:STDERR: fn Same[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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Same(Type(I & J(())), Type(J({}) & I));
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}
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// --- fail_compare_not_equal_parameterized_extra.carbon
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library "[[@TEST_NAME]]";
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class WrapType(T:! type) {}
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fn Same[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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fn Type(T:! type) -> WrapType(T) { return {}; }
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interface I {}
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interface J(T:! type) {}
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fn Test() {
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// CHECK:STDERR: fail_compare_not_equal_parameterized_extra.carbon:[[@LINE+7]]:3: error: inconsistent deductions for value of generic parameter `T` [DeductionInconsistent]
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// CHECK:STDERR: Same(Type(I & J(())), Type(J(()) & J({}) & I));
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_compare_not_equal_parameterized_extra.carbon:[[@LINE-10]]:1: note: while deducing parameters of generic declared here [DeductionGenericHere]
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// CHECK:STDERR: fn Same[T:! type](unused a: WrapType(T), unused b: WrapType(T)) {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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Same(Type(I & J(())), Type(J(()) & J({}) & I));
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}
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