Displaying 4 results from an estimated 4 matches for "format_provider".
2016 Oct 12
2
RFC: General purpose type-safe formatting library
...ent over traditional formatting
> mechanisms. If you pass an object for which it cannot find a formatter, it
> fails to compile.
>
> However, you can always define custom formatters for your own types. If
> you write:
>
> namespace llvm {
> template<>
> struct format_provider<Foo> {
> static void format(raw_ostream &S, const Foo &F, int Align, StringRef
> Options) {
> }
> };
> }
>
> Then #6 will magically compile, and invoke the function above to do the
> formatting. There are other ways to customize the formatting behavi...
2016 Oct 12
15
RFC: General purpose type-safe formatting library
...le!
Here is another example of an improvement over traditional formatting
mechanisms. If you pass an object for which it cannot find a formatter, it
fails to compile.
However, you can always define custom formatters for your own types. If
you write:
namespace llvm {
template<>
struct format_provider<Foo> {
static void format(raw_ostream &S, const Foo &F, int Align, StringRef
Options) {
}
};
}
Then #6 will magically compile, and invoke the function above to do the
formatting. There are other ways to customize the formatting behavior, but
I'll keep going with some m...
2016 Oct 31
0
RFC: General purpose type-safe formatting library
...if the type cannot be formatted.
struct Foo {};
outs() << "{0}"_fmt.stream(Foo{}); // compilation failure.
8) Extensible format provider mechanism to allow formatting of your own
types.
struct AddressRange { uint64_t Begin; uint64_t End; }
template<> class format_provider<AddressRange> {
public:
static void format(const AddressRange &R, raw_ostream &S, StringRef
Style) {
S << "[{0:X} - {1:X}]"_fmt.stream(R.begin(), R.end());
}
};
AddressRange AR{0, 0xDEADBEEF};
outs() << "{0}"_...
2016 Oct 14
2
RFC: General purpose type-safe formatting library
On 12.10.2016 05:59, Mehdi Amini via llvm-dev wrote:
>> If you change a const char * to a StringRef, it can silently succeed
>> while passing your StringRef object to printf. It should fail to compile!
>
> llvm::format now fails to compile as well :)
>
> However this does not address other issues, like: `format(“%d”, float_var)`
This may be a good time to point at