mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 19:50:14 +01:00
Richard Smith
c297344937
Add an `IntFitsIn` interface with a custom witness, such that `T impls
IntFitsIn(U)` if `T` is an integer type all of whose values fit
losslessly into the integer type `U`. Use it to constrain implicit
conversions between integer types.
So far, this has not been extended to the
`CppCompat.[U]{Long32,LongLong64}` types, only to `Core.Int(N)` and
`Core.UInt(N)`.
Assisted-by: Gemini 3 Pro via Antigravity
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
// 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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// This is an X-macro header. It does not use `#include` guards, and instead is
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// designed to be `#include`ed after the x-macro is defined in order for its
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// inclusion to expand to the desired output. Macro definitions are cleaned up
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// at the end of this file.
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//
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// This macro should be defined before including this header:
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// - CARBON_CORE_IDENTIFIER(Name)
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// Invoked for each `Core` identifier.
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#ifndef CARBON_CORE_IDENTIFIER
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#error "Must define the x-macro to use this file."
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#define CARBON_CORE_IDENTIFIER(Name)
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#endif
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CARBON_CORE_IDENTIFIER(AddAssignWith)
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CARBON_CORE_IDENTIFIER(AddWith)
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CARBON_CORE_IDENTIFIER(As)
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CARBON_CORE_IDENTIFIER(AssignWith)
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CARBON_CORE_IDENTIFIER(At)
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CARBON_CORE_IDENTIFIER(BitAndAssignWith)
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CARBON_CORE_IDENTIFIER(BitAndWith)
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CARBON_CORE_IDENTIFIER(BitComplement)
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CARBON_CORE_IDENTIFIER(BitOrAssignWith)
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CARBON_CORE_IDENTIFIER(BitOrWith)
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CARBON_CORE_IDENTIFIER(BitXorAssignWith)
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CARBON_CORE_IDENTIFIER(BitXorWith)
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CARBON_CORE_IDENTIFIER(Bool)
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CARBON_CORE_IDENTIFIER(Char)
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CARBON_CORE_IDENTIFIER(Convert)
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CARBON_CORE_IDENTIFIER(Copy)
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CARBON_CORE_IDENTIFIER(CppCompat)
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CARBON_CORE_IDENTIFIER(Dec)
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CARBON_CORE_IDENTIFIER(Destroy)
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CARBON_CORE_IDENTIFIER(DivAssignWith)
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CARBON_CORE_IDENTIFIER(DivWith)
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CARBON_CORE_IDENTIFIER(EqWith)
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CARBON_CORE_IDENTIFIER(Equal)
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CARBON_CORE_IDENTIFIER(Float)
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CARBON_CORE_IDENTIFIER(Get)
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CARBON_CORE_IDENTIFIER(Greater)
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CARBON_CORE_IDENTIFIER(GreaterOrEquivalent)
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CARBON_CORE_IDENTIFIER(HasValue)
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CARBON_CORE_IDENTIFIER(ImplicitAs)
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CARBON_CORE_IDENTIFIER(Inc)
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CARBON_CORE_IDENTIFIER(IndexWith)
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CARBON_CORE_IDENTIFIER(Int)
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CARBON_CORE_IDENTIFIER(IntFitsIn)
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CARBON_CORE_IDENTIFIER(Iterate)
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CARBON_CORE_IDENTIFIER(LeftShiftAssignWith)
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CARBON_CORE_IDENTIFIER(LeftShiftWith)
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CARBON_CORE_IDENTIFIER(Less)
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CARBON_CORE_IDENTIFIER(LessOrEquivalent)
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CARBON_CORE_IDENTIFIER(Long32)
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CARBON_CORE_IDENTIFIER(LongLong64)
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CARBON_CORE_IDENTIFIER(ModAssignWith)
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CARBON_CORE_IDENTIFIER(ModWith)
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CARBON_CORE_IDENTIFIER(MulAssignWith)
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CARBON_CORE_IDENTIFIER(MulWith)
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CARBON_CORE_IDENTIFIER(Negate)
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CARBON_CORE_IDENTIFIER(NewCursor)
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CARBON_CORE_IDENTIFIER(Next)
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CARBON_CORE_IDENTIFIER(NotEqual)
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CARBON_CORE_IDENTIFIER(NullptrT)
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CARBON_CORE_IDENTIFIER(Op)
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CARBON_CORE_IDENTIFIER(Optional)
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CARBON_CORE_IDENTIFIER(OrderedWith)
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CARBON_CORE_IDENTIFIER(RightShiftAssignWith)
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CARBON_CORE_IDENTIFIER(RightShiftWith)
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CARBON_CORE_IDENTIFIER(String)
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CARBON_CORE_IDENTIFIER(SubAssignWith)
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CARBON_CORE_IDENTIFIER(SubWith)
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CARBON_CORE_IDENTIFIER(UInt)
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CARBON_CORE_IDENTIFIER(ULong32)
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CARBON_CORE_IDENTIFIER(ULongLong64)
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CARBON_CORE_IDENTIFIER(UnsafeAs)
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CARBON_CORE_IDENTIFIER(VoidBase)
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#undef CARBON_CORE_IDENTIFIER
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