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Refactor error reporting to reduce duplication.

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This commit is contained in:
Victor Zverovich 2014-08-29 08:16:10 -07:00
parent 605d2600f8
commit 5debb2aa86
2 changed files with 14 additions and 13 deletions
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23
format.cc
View File

@ -175,13 +175,17 @@ int parse_nonnegative_int(const Char *&s) {
return value;
}
inline void require_numeric_argument(const Arg &arg, char spec) {
if (arg.type > Arg::LAST_NUMERIC_TYPE) {
throw fmt::FormatError(
fmt::format("format specifier '{}' requires numeric argument", spec));
}
}
template <typename Char>
void check_sign(const Char *&s, const Arg &arg) {
char sign = static_cast<char>(*s);
if (arg.type > Arg::LAST_NUMERIC_TYPE) {
throw fmt::FormatError(fmt::format(
"format specifier '{}' requires numeric argument", sign));
}
require_numeric_argument(arg, sign);
if (arg.type == Arg::UINT || arg.type == Arg::ULONG_LONG) {
throw fmt::FormatError(fmt::format(
"format specifier '{}' requires signed argument", sign));
@ -1059,8 +1063,8 @@ const Char *fmt::BasicFormatter<Char>::format(
s += 2;
spec.fill_ = c;
} else ++s;
if (spec.align_ == ALIGN_NUMERIC && arg.type > Arg::LAST_NUMERIC_TYPE)
throw FormatError("format specifier '=' requires numeric argument");
if (spec.align_ == ALIGN_NUMERIC)
require_numeric_argument(arg, '=');
break;
}
} while (--p >= s);
@ -1083,9 +1087,7 @@ const Char *fmt::BasicFormatter<Char>::format(
}
if (*s == '#') {
if (arg.type > Arg::LAST_NUMERIC_TYPE)
// TODO: make FormatError accept arguments
throw FormatError("format specifier '#' requires numeric argument");
require_numeric_argument(arg, '#');
spec.flags_ |= HASH_FLAG;
++s;
}
@ -1093,8 +1095,7 @@ const Char *fmt::BasicFormatter<Char>::format(
// Parse width and zero flag.
if ('0' <= *s && *s <= '9') {
if (*s == '0') {
if (arg.type > Arg::LAST_NUMERIC_TYPE)
throw FormatError("format specifier '0' requires numeric argument");
require_numeric_argument(arg, '0');
spec.align_ = ALIGN_NUMERIC;
spec.fill_ = '0';
}

4
format.h
View File

@ -215,8 +215,8 @@ typedef BasicStringRef<wchar_t> WStringRef;
*/
class FormatError : public std::runtime_error {
public:
explicit FormatError(const std::string &message)
: std::runtime_error(message) {}
explicit FormatError(StringRef message)
: std::runtime_error(message.c_str()) {}
};
namespace internal {