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Improve behaviors when disabling exceptions

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This commit is contained in:
Carter Li 2015-03-14 14:37:02 +08:00
parent b8c36498f2
commit 593d3aef9e
1 changed files with 19 additions and 5 deletions
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24
format.cc
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@ -66,10 +66,24 @@ using fmt::internal::Arg;
#ifndef FMT_THROW
# if FMT_EXCEPTIONS
# define FMT_THROW(x) throw x
# define FMT_RETURN_AFTER_THROW(x)
# else
# define FMT_THROW(x) assert(false)
# define FMT_RETURN_AFTER_THROW(x) return x
# ifdef DEBUG
# define FMT_THROW(x) assert(false && #x)
# elif defined _MSC_VER
# define FMT_THROW(x) __assume(0)
# elif defined __clang__ || FMT_GCC_VERSION >= 405
# define FMT_THROW(x) __builtin_unreachable()
# else
# define FMT_THROW(x) std::abort()
# endif
# endif
#endif
#ifndef FMT_NORETURN
# if defined __GNUC__ || defined __clang__
# define FMT_NORETURN __attribute__((__noreturn__))
# elif defined _MSC_VER
# define FMT_NORETURN __declspec(noreturn)
# endif
#endif
@ -257,9 +271,9 @@ class WidthHandler : public fmt::internal::ArgVisitor<WidthHandler, unsigned> {
public:
explicit WidthHandler(fmt::FormatSpec &spec) : spec_(spec) {}
FMT_NORETURN
unsigned visit_unhandled_arg() {
FMT_THROW(fmt::FormatError("width is not integer"));
FMT_RETURN_AFTER_THROW(0);
}
template <typename T>
@ -279,9 +293,9 @@ class WidthHandler : public fmt::internal::ArgVisitor<WidthHandler, unsigned> {
class PrecisionHandler :
public fmt::internal::ArgVisitor<PrecisionHandler, int> {
public:
FMT_NORETURN
unsigned visit_unhandled_arg() {
FMT_THROW(fmt::FormatError("precision is not integer"));
FMT_RETURN_AFTER_THROW(0);
}
template <typename T>