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49 lines
2.3 KiB
C++
49 lines
2.3 KiB
C++
#pragma once
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#include "types.h"
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#define CHECK_SIZE(type, size) static_assert(sizeof(type) == size, "Invalid " #type " type size")
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#define CHECK_ALIGN(type, align) static_assert(alignof(type) == align, "Invalid " #type " type alignment")
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#define CHECK_MAX_SIZE(type, size) static_assert(sizeof(type) <= size, #type " type size is too big")
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#define CHECK_SIZE_ALIGN(type, size, align) CHECK_SIZE(type, size); CHECK_ALIGN(type, align)
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#define CHECK_STORAGE(type, storage) static_assert(sizeof(type) <= sizeof(storage) && alignof(type) <= alignof(decltype(storage)), #type " is too small")
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// Return 32 bit sizeof() to avoid widening/narrowing conversions with size_t
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#define SIZE_32(type) static_cast<std::uint32_t>(sizeof(type))
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// Return 32 bit alignof() to avoid widening/narrowing conversions with size_t
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#define ALIGN_32(type) static_cast<std::uint32_t>(alignof(type))
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// Return 32 bit custom offsetof()
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#define OFFSET_32(type, x) static_cast<std::uint32_t>(reinterpret_cast<std::uintptr_t>(&reinterpret_cast<const volatile char&>(reinterpret_cast<type*>(0ull)->x)))
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// Sometimes to avoid writing std::remove_cv_t<>, example: std::is_same<CV T1, CV T2>
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#define CV const volatile
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#define CONCATENATE_DETAIL(x, y) x ## y
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#define CONCATENATE(x, y) CONCATENATE_DETAIL(x, y)
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#define STRINGIZE_DETAIL(x) #x
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#define STRINGIZE(x) STRINGIZE_DETAIL(x)
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// Macro set, wraps an expression into lambda
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#define WRAP_EXPR(expr, ...) [&](__VA_ARGS__) { return expr; }
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#define COPY_EXPR(expr, ...) [=](__VA_ARGS__) { return expr; }
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#define PURE_EXPR(expr, ...) [] (__VA_ARGS__) { return expr; }
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#define return_ return
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#define HERE "\n(in file " __FILE__ ":" STRINGIZE(__LINE__) ")"
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// Ensure that the expression is evaluated to true. Always evaluated and allowed to have side effects (unlike assert() macro).
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#define VERIFY(expr) do { if (!(expr)) fmt::raw_error("Verification failed: " #expr HERE); } while (0)
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// EXPECTS() and ENSURES() are intended to check function arguments and results.
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// Expressions are not guaranteed to evaluate.
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#define EXPECTS(expr) do { if (!(expr)) fmt::raw_error("Precondition failed: " #expr HERE); } while (0)
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#define ENSURES(expr) do { if (!(expr)) fmt::raw_error("Postcondition failed: " #expr HERE); } while (0)
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#define DECLARE(...) decltype(__VA_ARGS__) __VA_ARGS__
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#define STR_CASE(value) case value: return #value
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