Created
July 24, 2022 17:35
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Jakt Builder Pattern
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| class Foo { | |
| _bar: i64 | |
| _baz: c_char | |
| _qaz: String | |
| public function bar(mut this, anon bar: i64) -> Foo { | |
| this._bar = bar | |
| return this | |
| } | |
| public function baz(mut this, anon baz: c_char) -> Foo { | |
| this._baz = baz | |
| return this | |
| } | |
| public function qaz(mut this, anon qaz: String) -> Foo { | |
| this._qaz = qaz | |
| return this | |
| } | |
| } |
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| ➜ jakt_selfhost -b builder.jakt | |
| build/builder.cpp:22:8: error: no viable conversion from returned value of type 'Jakt::Foo *' to function return type 'NonnullRefPtr<Jakt::Foo>' | |
| return (this); | |
| ^~~~~~ | |
| runtime/Jakt/NonnullRefPtr.h:53:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const Jakt::Foo &' for 1st argument; dereference the argument with * | |
| ALWAYS_INLINE NonnullRefPtr(T const& object) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:71:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'Jakt::NonnullRefPtr<Jakt::Foo> &&' for 1st argument | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr&& other) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:82:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const Jakt::NonnullRefPtr<Jakt::Foo> &' for 1st argument | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr const& other) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:108:5: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const RefPtr<Jakt::Foo> &' for 1st argument | |
| NonnullRefPtr(RefPtr<T> const&) = delete; | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:60:19: note: candidate template ignored: constraints not satisfied [with U = Jakt::Foo *] | |
| ALWAYS_INLINE NonnullRefPtr(U const& object) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:60:59: note: because 'IsConvertible<Jakt::Foo **, Jakt::Foo *>' evaluated to false | |
| ALWAYS_INLINE NonnullRefPtr(U const& object) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:77:19: note: candidate template ignored: could not match 'NonnullRefPtr<U>' against 'Jakt::Foo *' | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr<U>&& other) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:89:19: note: candidate template ignored: could not match 'NonnullRefPtr<U>' against 'Jakt::Foo *' | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr<U> const& other) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:105:5: note: candidate template ignored: could not match 'RefPtr<U>' against 'Jakt::Foo *' | |
| NonnullRefPtr(RefPtr<U> const&) = delete; | |
| ^ | |
| build/builder.cpp:29:8: error: no viable conversion from returned value of type 'Jakt::Foo *' to function return type 'NonnullRefPtr<Jakt::Foo>' | |
| return (this); | |
| ^~~~~~ | |
| runtime/Jakt/NonnullRefPtr.h:53:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const Jakt::Foo &' for 1st argument; dereference the argument with * | |
| ALWAYS_INLINE NonnullRefPtr(T const& object) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:71:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'Jakt::NonnullRefPtr<Jakt::Foo> &&' for 1st argument | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr&& other) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:82:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const Jakt::NonnullRefPtr<Jakt::Foo> &' for 1st argument | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr const& other) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:108:5: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const RefPtr<Jakt::Foo> &' for 1st argument | |
| NonnullRefPtr(RefPtr<T> const&) = delete; | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:60:19: note: candidate template ignored: constraints not satisfied [with U = Jakt::Foo *] | |
| ALWAYS_INLINE NonnullRefPtr(U const& object) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:60:59: note: because 'IsConvertible<Jakt::Foo **, Jakt::Foo *>' evaluated to false | |
| ALWAYS_INLINE NonnullRefPtr(U const& object) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:77:19: note: candidate template ignored: could not match 'NonnullRefPtr<U>' against 'Jakt::Foo *' | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr<U>&& other) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:89:19: note: candidate template ignored: could not match 'NonnullRefPtr<U>' against 'Jakt::Foo *' | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr<U> const& other) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:105:5: note: candidate template ignored: could not match 'RefPtr<U>' against 'Jakt::Foo *' | |
| NonnullRefPtr(RefPtr<U> const&) = delete; | |
| ^ | |
| build/builder.cpp:36:8: error: no viable conversion from returned value of type 'Jakt::Foo *' to function return type 'NonnullRefPtr<Jakt::Foo>' | |
| return (this); | |
| ^~~~~~ | |
| runtime/Jakt/NonnullRefPtr.h:53:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const Jakt::Foo &' for 1st argument; dereference the argument with * | |
| ALWAYS_INLINE NonnullRefPtr(T const& object) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:71:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'Jakt::NonnullRefPtr<Jakt::Foo> &&' for 1st argument | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr&& other) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:82:19: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const Jakt::NonnullRefPtr<Jakt::Foo> &' for 1st argument | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr const& other) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:108:5: note: candidate constructor not viable: no known conversion from 'Jakt::Foo *' to 'const RefPtr<Jakt::Foo> &' for 1st argument | |
| NonnullRefPtr(RefPtr<T> const&) = delete; | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:60:19: note: candidate template ignored: constraints not satisfied [with U = Jakt::Foo *] | |
| ALWAYS_INLINE NonnullRefPtr(U const& object) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:60:59: note: because 'IsConvertible<Jakt::Foo **, Jakt::Foo *>' evaluated to false | |
| ALWAYS_INLINE NonnullRefPtr(U const& object) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:77:19: note: candidate template ignored: could not match 'NonnullRefPtr<U>' against 'Jakt::Foo *' | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr<U>&& other) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:89:19: note: candidate template ignored: could not match 'NonnullRefPtr<U>' against 'Jakt::Foo *' | |
| ALWAYS_INLINE NonnullRefPtr(NonnullRefPtr<U> const& other) requires(IsConvertible<U*, T*>) | |
| ^ | |
| runtime/Jakt/NonnullRefPtr.h:105:5: note: candidate template ignored: could not match 'RefPtr<U>' against 'Jakt::Foo *' | |
| NonnullRefPtr(RefPtr<U> const&) = delete; | |
| ^ | |
| 3 errors generated. |
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