forked from OSchip/llvm-project
60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
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template <typename T, typename U> concept convertible_to = true;
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template <typename T, typename U> concept same_as = true;
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template <typename T> concept integral = true;
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template <typename A, typename B>
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concept W = requires(A a, B b) {
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{ b.www } noexcept -> integral;
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};
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template <typename T> concept X = requires(T t) {
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t.xxx(42);
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typename T::xxx_t;
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T::xyz::member;
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};
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template <typename T, typename U>
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concept Y = requires(T t, U u) { t.yyy(u); };
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template <typename T>
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concept Z = requires(T t) {
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{ t.zzz() } -> same_as<int>;
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requires W<int, T>;
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};
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// Concept constraints in all three slots require X, Y, Z, and ad-hoc stuff.
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template <X T>
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requires Y<T, int> && requires(T *t) { { t->aaa() } -> convertible_to<double>; }
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void foo(T t) requires Z<T> || requires(T &t) { t.bbb(); t->bb(); } {
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t.x;
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t->x;
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T::x;
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// RUN: %clang_cc1 -std=c++2a -code-completion-with-fixits -code-completion-at=%s:29:5 %s \
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// RUN: | FileCheck %s -check-prefix=DOT -implicit-check-not=xxx_t
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// DOT: Pattern : [#convertible_to<double>#]aaa()
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// DOT: Pattern : bb() (requires fix-it: {{.*}} to "->")
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// DOT: Pattern : bbb()
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// DOT: Pattern : [#integral#]www
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// DOT: Pattern : xxx(<#int#>)
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// FIXME: it would be nice to have int instead of U here.
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// DOT: Pattern : yyy(<#U#>)
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// DOT: Pattern : [#int#]zzz()
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// RUN: %clang_cc1 -std=c++2a -code-completion-with-fixits -code-completion-at=%s:30:6 %s \
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// RUN: | FileCheck %s -check-prefix=ARROW -implicit-check-not=xxx_t
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// ARROW: Pattern : [#convertible_to<double>#]aaa() (requires fix-it: {{.*}} to ".")
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// ARROW: Pattern : bb()
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// ARROW: Pattern : bbb() (requires fix-it
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// ARROW: Pattern : [#integral#]www (requires fix-it
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// ARROW: Pattern : xxx(<#int#>) (requires fix-it
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// ARROW: Pattern : yyy(<#U#>) (requires fix-it
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// ARROW: Pattern : [#int#]zzz() (requires fix-it
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// RUN: %clang_cc1 -std=c++2a -code-completion-with-fixits -code-completion-at=%s:31:6 %s \
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// RUN: | FileCheck %s -check-prefix=COLONS -implicit-check-not=yyy
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// COLONS: Pattern : xxx_t
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// COLONS: Pattern : xyz
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}
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