mirror of
https://github.com/fmtlib/fmt.git
synced 2024-11-09 12:50:05 +00:00
Implement formatting of integers.
This commit is contained in:
Victor Zverovich
parent
c5dce1caf9
commit
b98b2e9842
325
format.cc
325
format.cc
@ -5,6 +5,8 @@
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#include "format.h"
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#include <stdint.h>
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#include <cassert>
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#include <climits>
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#include <cstring>
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@ -14,16 +16,16 @@ using std::size_t;
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namespace {
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// Flags.
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enum { PLUS_FLAG = 1, ZERO_FLAG = 2, HEX_PREFIX_FLAG = 4 };
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// Throws Exception(message) if format contains '}', otherwise throws
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// FormatError reporting unmatched '{'. The idea is that unmatched '{'
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// should override other errors.
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template <typename Exception>
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void Throw(const char *s, const char *message) {
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void ReportError(const char *s, const std::string &message) {
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while (*s && *s != '}')
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++s;
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if (!*s)
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throw fmt::FormatError("unmatched '{' in format");
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throw Exception(message);
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throw fmt::FormatError(*s ? message : std::string("unmatched '{' in format"));
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}
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// Parses an unsigned integer advancing s to the end of the parsed input.
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@ -34,29 +36,168 @@ unsigned ParseUInt(const char *&s) {
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do {
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unsigned new_value = value * 10 + (*s++ - '0');
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if (new_value < value) // Check if value wrapped around.
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Throw<fmt::FormatError>(s, "number is too big in format");
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ReportError(s, "number is too big in format");
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value = new_value;
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} while ('0' <= *s && *s <= '9');
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return value;
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}
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// Maps an integer type T to its unsigned counterpart.
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template <typename T>
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struct GetUnsigned;
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template <>
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struct GetUnsigned<int> {
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typedef unsigned Type;
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};
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template <>
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struct GetUnsigned<unsigned> {
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typedef unsigned Type;
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};
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template <>
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struct GetUnsigned<long> {
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typedef unsigned long Type;
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};
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template <>
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struct GetUnsigned<unsigned long> {
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typedef unsigned long Type;
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};
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template <typename T>
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struct IsLongDouble { enum {VALUE = 0}; };
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template <>
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struct IsLongDouble<long double> { enum {VALUE = 1}; };
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}
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template <typename T>
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void fmt::Formatter::FormatBuiltinArg(
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const char *format, const T &arg, int width, int precision) {
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void fmt::Formatter::FormatInt(T value, unsigned flags, int width, char type) {
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int size = 0;
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char sign = 0;
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typedef typename GetUnsigned<T>::Type UnsignedType;
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UnsignedType abs_value = value;
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if (value < 0) {
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sign = '-';
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++size;
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abs_value = -value;
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} else if ((flags & PLUS_FLAG) != 0) {
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sign = '+';
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++size;
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}
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char fill = (flags & ZERO_FLAG) != 0 ? '0' : ' ';
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size_t start = buffer_.size();
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char *p = 0;
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switch (type) {
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case 0: case 'd': {
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UnsignedType n = abs_value;
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do {
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++size;
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} while ((n /= 10) != 0);
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width = std::max(width, size);
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buffer_.resize(buffer_.size() + width, fill);
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p = &buffer_.back();
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n = abs_value;
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do {
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*p-- = '0' + (n % 10);
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} while ((n /= 10) != 0);
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break;
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}
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case 'x': case 'X': {
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UnsignedType n = abs_value;
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bool print_prefix = (flags & HEX_PREFIX_FLAG) != 0;
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if (print_prefix) size += 2;
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do {
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++size;
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} while ((n >>= 4) != 0);
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width = std::max(width, size);
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buffer_.resize(buffer_.size() + width, fill);
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p = &buffer_.back();
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n = abs_value;
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const char *digits = type == 'x' ? "0123456789abcdef" : "0123456789ABCDEF";
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do {
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*p-- = digits[n & 0xf];
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} while ((n >>= 4) != 0);
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if (print_prefix) {
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*p-- = type;
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*p-- = '0';
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}
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break;
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}
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case 'o': {
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UnsignedType n = abs_value;
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do {
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++size;
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} while ((n >>= 3) != 0);
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width = std::max(width, size);
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buffer_.resize(buffer_.size() + width, fill);
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p = &buffer_.back();
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n = abs_value;
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do {
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*p-- = '0' + (n & 7);
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} while ((n >>= 3) != 0);
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break;
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}
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default:
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throw FormatError(
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str(fmt::Format("unknown format code '{0}' for integer") << type));
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}
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if (sign) {
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if ((flags & ZERO_FLAG) != 0)
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buffer_[start] = sign;
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else
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*p = sign;
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}
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}
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template <typename T>
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void fmt::Formatter::FormatDouble(
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T value, unsigned flags, int width, int precision, char type) {
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// Check type.
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switch (type) {
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case 'e': case 'E': case 'f': case 'F': case 'g': case 'G':
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break;
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default:
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// TODO: error
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break;
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}
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// Build format string.
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enum { MAX_FORMAT_SIZE = 9}; // longest format: %+0*.*Lg
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char format[MAX_FORMAT_SIZE];
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char *format_ptr = format;
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*format_ptr++ = '%';
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if ((flags & PLUS_FLAG) != 0)
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*format_ptr++ = '+';
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if ((flags & ZERO_FLAG) != 0)
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*format_ptr++ = '0';
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if (width > 0)
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*format_ptr++ = '*';
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if (precision >= 0) {
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*format_ptr++ = '.';
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*format_ptr++ = '*';
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}
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if (IsLongDouble<T>::VALUE)
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*format_ptr++ = 'L';
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*format_ptr++ = type ? type : 'g';
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*format_ptr = '\0';
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// Format using snprintf.
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size_t offset = buffer_.size();
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buffer_.resize(buffer_.capacity());
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for (;;) {
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size_t size = buffer_.size() - offset;
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int n = 0;
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if (width < 0) {
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if (width <= 0) {
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n = precision < 0 ?
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snprintf(&buffer_[offset], size, format, arg) :
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snprintf(&buffer_[offset], size, format, precision, arg);
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snprintf(&buffer_[offset], size, format, value) :
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snprintf(&buffer_[offset], size, format, precision, value);
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} else {
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n = precision < 0 ?
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snprintf(&buffer_[offset], size, format, width, arg) :
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snprintf(&buffer_[offset], size, format, width, precision, arg);
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snprintf(&buffer_[offset], size, format, width, value) :
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snprintf(&buffer_[offset], size, format, width, precision, value);
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}
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if (n >= 0 && offset + n < buffer_.size()) {
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buffer_.resize(offset + n);
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@ -77,92 +218,64 @@ void fmt::Formatter::Format() {
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// Parse argument index.
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if (*s < '0' || *s > '9')
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Throw<fmt::FormatError>(s, "missing argument index in format string");
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ReportError(s, "missing argument index in format string");
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unsigned arg_index = ParseUInt(s);
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if (arg_index >= args_.size())
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Throw<std::out_of_range>(s, "argument index is out of range in format");
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ReportError(s, "argument index is out of range in format");
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Arg &arg = args_[arg_index];
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enum { MAX_FORMAT_SIZE = 10}; // longest format: %+0-*.*ld
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char arg_format[MAX_FORMAT_SIZE];
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char *arg_format_ptr = arg_format;
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*arg_format_ptr++ = '%';
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int width = -1;
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unsigned flags = 0;
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int width = 0;
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int precision = -1;
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char type = 0;
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bool is_floating_point = false;
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if (*s == ':') {
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++s;
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if (*s == '+') {
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if (arg.type > LAST_NUMERIC_TYPE) {
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Throw<FormatError>(s,
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"format specifier '+' requires numeric argument");
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}
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++s;
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if (arg.type > LAST_NUMERIC_TYPE)
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ReportError(s, "format specifier '+' requires numeric argument");
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if (arg.type == UINT || arg.type == ULONG) {
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Throw<FormatError>(s,
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ReportError(s,
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"format specifier '+' requires signed argument");
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}
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*arg_format_ptr++ = *s++;
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flags |= PLUS_FLAG;
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}
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if (*s == '0') {
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if (arg.type > LAST_NUMERIC_TYPE) {
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Throw<FormatError>(s,
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"format specifier '0' requires numeric argument");
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}
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*arg_format_ptr++ = *s++;
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++s;
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if (arg.type > LAST_NUMERIC_TYPE)
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ReportError(s, "format specifier '0' requires numeric argument");
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flags |= ZERO_FLAG;
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}
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// Parse width.
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if ('0' <= *s && *s <= '9') {
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if (arg.type > LAST_NUMERIC_TYPE && arg.type != POINTER)
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*arg_format_ptr++ = '-';
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*arg_format_ptr++ = '*';
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unsigned value = ParseUInt(s);
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if (value > INT_MAX)
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Throw<FormatError>(s, "number is too big in format");
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ReportError(s, "number is too big in format");
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width = value;
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}
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// Parse precision.
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if (*s == '.') {
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*arg_format_ptr++ = '.';
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*arg_format_ptr++ = '*';
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++s;
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precision = 0;
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if ('0' <= *s && *s <= '9') {
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unsigned value = ParseUInt(s);
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if (value > INT_MAX)
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Throw<FormatError>(s, "number is too big in format");
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ReportError(s, "number is too big in format");
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precision = value;
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} else {
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Throw<FormatError>(s, "missing precision in format");
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ReportError(s, "missing precision in format");
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}
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if (arg.type > LAST_NUMERIC_TYPE ||
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(*s == '}' && arg.type != DOUBLE && arg.type != LONG_DOUBLE)) {
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Throw<FormatError>(s,
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"precision specifier requires floating-point type");
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if (arg.type != DOUBLE && arg.type != LONG_DOUBLE) {
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ReportError(s,
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"precision specifier requires floating-point argument");
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}
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}
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// Parse type.
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if (*s != '}' && *s) {
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if (*s != '}' && *s)
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type = *s++;
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if (arg.type <= LAST_NUMERIC_TYPE) {
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switch (type) {
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case 'd': case 'o': case 'x': case 'X':
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// TODO: check that argument is integer
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break;
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case 'e': case 'E': case 'f': case 'F': case 'g': case 'G':
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is_floating_point = true;
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break;
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default:
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// TODO: error
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break;
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}
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}
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// TODO: check non-numeric types (string, character)
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}
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}
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if (*s++ != '}')
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@ -172,87 +285,45 @@ void fmt::Formatter::Format() {
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// Format argument.
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switch (arg.type) {
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case INT:
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*arg_format_ptr++ = type ? type : 'd';
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*arg_format_ptr = '\0';
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if (is_floating_point)
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FormatBuiltinArg<double>(arg_format, arg.int_value, width, precision);
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else
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FormatBuiltinArg(arg_format, arg.int_value, width, precision);
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FormatInt(arg.int_value, flags, width, type);
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break;
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case UINT:
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*arg_format_ptr++ = type ? type : 'u';
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*arg_format_ptr = '\0';
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if (is_floating_point)
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FormatBuiltinArg<double>(arg_format, arg.uint_value, width, precision);
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else
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FormatBuiltinArg(arg_format, arg.uint_value, width, precision);
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FormatInt(arg.uint_value, flags, width, type);
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break;
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case LONG:
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*arg_format_ptr++ = 'l';
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*arg_format_ptr++ = type ? type : 'd';
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*arg_format_ptr = '\0';
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if (is_floating_point)
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FormatBuiltinArg<double>(arg_format, arg.long_value, width, precision);
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else
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FormatBuiltinArg(arg_format, arg.long_value, width, precision);
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FormatInt(arg.long_value, flags, width, type);
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break;
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case ULONG:
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*arg_format_ptr++ = 'l';
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*arg_format_ptr++ = type ? type : 'u';
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*arg_format_ptr = '\0';
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if (is_floating_point)
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FormatBuiltinArg<double>(arg_format, arg.ulong_value, width, precision);
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else
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FormatBuiltinArg(arg_format, arg.ulong_value, width, precision);
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FormatInt(arg.ulong_value, flags, width, type);
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break;
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case DOUBLE:
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*arg_format_ptr++ = type ? type : 'g';
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*arg_format_ptr = '\0';
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FormatBuiltinArg(arg_format, arg.double_value, width, precision);
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FormatDouble(arg.double_value, flags, width, precision, type);
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break;
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case LONG_DOUBLE:
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*arg_format_ptr++ = 'L';
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*arg_format_ptr++ = type ? type : 'g';
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*arg_format_ptr = '\0';
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FormatBuiltinArg(arg_format, arg.long_double_value, width, precision);
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break;
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case POINTER:
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// TODO: don't allow any type specifiers other than 'p'
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*arg_format_ptr++ = 'p';
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*arg_format_ptr = '\0';
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FormatBuiltinArg(arg_format, arg.pointer_value, width, precision);
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FormatDouble(arg.long_double_value, flags, width, precision, type);
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break;
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case CHAR:
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// TODO: check if type is 'c' or none
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if (width <= 1) {
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buffer_.push_back(arg.int_value);
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break;
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}
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*arg_format_ptr++ = 'c';
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*arg_format_ptr = '\0';
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FormatBuiltinArg(arg_format, arg.int_value, width, precision);
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buffer_.reserve(std::max(width, 1));
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buffer_.push_back(arg.int_value);
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if (width > 1)
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buffer_.resize(buffer_.size() + width - 1, ' ');
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break;
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case STRING:
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// TODO: check if type is 's' or none
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if (width == -1 || width <= arg.size) {
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const char *str = arg.string_value;
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size_t size = arg.size;
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if (size == 0 && *str)
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size = std::strlen(str);
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buffer_.reserve(buffer_.size() + size + 1);
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buffer_.insert(buffer_.end(), str, str + size);
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break;
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}
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*arg_format_ptr++ = 's';
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*arg_format_ptr = '\0';
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FormatBuiltinArg(arg_format, arg.string_value, width, precision);
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case STRING: {
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const char *str = arg.string_value;
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size_t size = arg.size;
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if (size == 0 && *str)
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size = std::strlen(str);
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buffer_.reserve(buffer_.size() + std::max<size_t>(width, size));
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buffer_.insert(buffer_.end(), str, str + size);
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if (width > size)
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buffer_.resize(buffer_.size() + width - size, ' ');
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break;
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case WSTRING:
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// TODO: check if type is 's' or none
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*arg_format_ptr++ = 'l';
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*arg_format_ptr++ = 's';
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*arg_format_ptr = '\0';
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FormatBuiltinArg(arg_format, arg.wstring_value, width, precision);
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}
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case POINTER:
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// TODO: don't allow type specifiers other than 'p'
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FormatInt(reinterpret_cast<uintptr_t>(
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arg.pointer_value), HEX_PREFIX_FLAG, width, 'x');
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break;
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case CUSTOM:
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// TODO: check if type is 's' or none
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38
format.h
38
format.h
@ -53,7 +53,6 @@ class Formatter {
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struct {
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union {
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const char *string_value;
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const wchar_t *wstring_value;
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const void *pointer_value;
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};
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std::size_t size;
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@ -74,7 +73,6 @@ class Formatter {
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explicit Arg(char value) : type(CHAR), int_value(value) {}
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explicit Arg(const char *value, std::size_t size = 0)
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: type(STRING), string_value(value), size(size) {}
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explicit Arg(const wchar_t *value) : type(WSTRING), wstring_value(value) {}
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explicit Arg(const void *value) : type(POINTER), pointer_value(value) {}
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explicit Arg(const void *value, FormatFunc f)
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: type(CUSTOM), custom_value(value), format(f) {}
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@ -92,10 +90,14 @@ class Formatter {
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args_.push_back(arg);
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}
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// Formats an argument of a built-in type, such as "int" or "double".
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// Formats an integer.
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template <typename T>
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void FormatBuiltinArg(
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const char *format, const T &arg, int width, int precision);
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void FormatInt(T value, unsigned flags, int width, char type);
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// Formats a floating point number.
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template <typename T>
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void FormatDouble(
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T value, unsigned flags, int width, int precision, char type);
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||||
|
||||
// Formats an argument of a custom type, such as a user-defined class.
|
||||
template <typename T>
|
||||
@ -199,11 +201,6 @@ class ArgFormatter {
|
||||
return *this;
|
||||
}
|
||||
|
||||
ArgFormatter &operator<<(const wchar_t *value) {
|
||||
formatter_->Add(Formatter::Arg(value));
|
||||
return *this;
|
||||
}
|
||||
|
||||
ArgFormatter &operator<<(const std::string &value) {
|
||||
formatter_->Add(Formatter::Arg(value.c_str(), value.size()));
|
||||
return *this;
|
||||
@ -214,10 +211,16 @@ class ArgFormatter {
|
||||
return *this;
|
||||
}
|
||||
|
||||
// This method is not implemented intentionally to disallow output of
|
||||
// This method contains a deliberate error to disallow formatting
|
||||
// arbitrary pointers. If you want to output a pointer cast it to void*.
|
||||
template <typename T>
|
||||
ArgFormatter &operator<<(const T *value);
|
||||
ArgFormatter &operator<<(const T *value) {
|
||||
"Formatting arbitrary pointers is not allowed" = value;
|
||||
}
|
||||
|
||||
// This method is not implemented intentionally to disallow formatting
|
||||
// wide characters.
|
||||
ArgFormatter &operator<<(wchar_t value);
|
||||
|
||||
template <typename T>
|
||||
ArgFormatter &operator<<(T *value) {
|
||||
@ -253,13 +256,10 @@ void Formatter::FormatCustomArg(const void *arg, int width) {
|
||||
std::ostringstream os;
|
||||
os << value;
|
||||
std::string str(os.str());
|
||||
if (width < 0) {
|
||||
// Extra char is reserved for terminating '\0'.
|
||||
buffer_.reserve(buffer_.size() + str.size() + 1);
|
||||
buffer_.insert(buffer_.end(), str.begin(), str.end());
|
||||
return;
|
||||
}
|
||||
FormatBuiltinArg("%-*s", str.c_str(), width, -1);
|
||||
buffer_.reserve(buffer_.size() + std::max<std::size_t>(width, str.size()));
|
||||
buffer_.insert(buffer_.end(), str.begin(), str.end());
|
||||
if (width > str.size())
|
||||
buffer_.resize(buffer_.size() + width - str.size(), ' ');
|
||||
}
|
||||
|
||||
inline ArgFormatter Formatter::operator()(const char *format) {
|
||||
|
||||
132
format_test.cc
132
format_test.cc
@ -71,7 +71,7 @@ TEST(FormatterTest, NoArgs) {
|
||||
EXPECT_EQ("test", str(Format("test")));
|
||||
}
|
||||
|
||||
TEST(FormatterTest, Args) {
|
||||
TEST(FormatterTest, ArgsInDifferentPositions) {
|
||||
EXPECT_EQ("42", str(Format("{0}") << 42));
|
||||
EXPECT_EQ("before 42", str(Format("before {0}") << 42));
|
||||
EXPECT_EQ("42 after", str(Format("{0} after") << 42));
|
||||
@ -86,13 +86,13 @@ TEST(FormatterTest, ArgErrors) {
|
||||
EXPECT_THROW_MSG(Format("{}"), FormatError,
|
||||
"missing argument index in format string");
|
||||
EXPECT_THROW_MSG(Format("{0"), FormatError, "unmatched '{' in format");
|
||||
EXPECT_THROW_MSG(Format("{0}"), std::out_of_range,
|
||||
EXPECT_THROW_MSG(Format("{0}"), FormatError,
|
||||
"argument index is out of range in format");
|
||||
char format[256];
|
||||
std::sprintf(format, "{%u", UINT_MAX);
|
||||
EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
|
||||
std::sprintf(format, "{%u}", UINT_MAX);
|
||||
EXPECT_THROW_MSG(Format(format), std::out_of_range,
|
||||
EXPECT_THROW_MSG(Format(format), FormatError,
|
||||
"argument index is out of range in format");
|
||||
if (ULONG_MAX > UINT_MAX) {
|
||||
std::sprintf(format, "{%lu", UINT_MAX + 1l);
|
||||
@ -130,8 +130,6 @@ TEST(FormatterTest, PlusFlag) {
|
||||
FormatError, "format specifier '+' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:+}") << "abc",
|
||||
FormatError, "format specifier '+' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:+}") << L"abc",
|
||||
FormatError, "format specifier '+' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:+}") << reinterpret_cast<void*>(0x42),
|
||||
FormatError, "format specifier '+' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:+}") << TestString(),
|
||||
@ -152,8 +150,6 @@ TEST(FormatterTest, ZeroFlag) {
|
||||
FormatError, "format specifier '0' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:05}") << "abc",
|
||||
FormatError, "format specifier '0' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:05}") << L"abc",
|
||||
FormatError, "format specifier '0' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:05}") << reinterpret_cast<void*>(0x42),
|
||||
FormatError, "format specifier '0' requires numeric argument");
|
||||
EXPECT_THROW_MSG(Format("{0:05}") << TestString(),
|
||||
@ -189,9 +185,8 @@ TEST(FormatterTest, Width) {
|
||||
EXPECT_EQ(" 0xcafe",
|
||||
str(Format("{0:10}") << reinterpret_cast<void*>(0xcafe)));
|
||||
EXPECT_EQ("x ", str(Format("{0:11}") << 'x'));
|
||||
EXPECT_EQ("narrow ", str(Format("{0:12}") << "narrow"));
|
||||
EXPECT_EQ("wide ", str(Format("{0:13}") << L"wide"));
|
||||
EXPECT_EQ("test ", str(Format("{0:14}") << TestString("test")));
|
||||
EXPECT_EQ("str ", str(Format("{0:12}") << "str"));
|
||||
EXPECT_EQ("test ", str(Format("{0:13}") << TestString("test")));
|
||||
}
|
||||
|
||||
TEST(FormatterTest, Precision) {
|
||||
@ -224,55 +219,97 @@ TEST(FormatterTest, Precision) {
|
||||
FormatError, "unmatched '{' in format");
|
||||
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << 42,
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42));
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << 42,
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << 42u,
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42u));
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << 42u,
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << 42l,
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42l));
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << 42l,
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << 42ul,
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42ul));
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << 42ul,
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_EQ("1.2", str(Format("{0:.2}") << 1.2345));
|
||||
EXPECT_EQ("1.2", str(Format("{0:.2}") << 1.2345l));
|
||||
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << reinterpret_cast<void*>(0xcafe),
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << reinterpret_cast<void*>(0xcafe),
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << 'x',
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << 'x',
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << "str",
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << "str",
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << L"str",
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << L"str",
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
|
||||
EXPECT_THROW_MSG(Format("{0:.2}") << TestString(),
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
EXPECT_THROW_MSG(Format("{0:.2f}") << TestString(),
|
||||
FormatError, "precision specifier requires floating-point type");
|
||||
FormatError, "precision specifier requires floating-point argument");
|
||||
}
|
||||
|
||||
TEST(FormatterTest, FormatInt) {
|
||||
TEST(FormatterTest, Type) {
|
||||
EXPECT_THROW_MSG(Format("{0:v") << 42,
|
||||
FormatError, "unmatched '{' in format");
|
||||
EXPECT_THROW_MSG(Format("{0:v}") << 42,
|
||||
FormatError, "unknown format code 'v' for integer");
|
||||
}
|
||||
|
||||
TEST(FormatterTest, FormatDec) {
|
||||
EXPECT_EQ("0", str(Format("{0}") << 0));
|
||||
EXPECT_EQ("42", str(Format("{0}") << 42));
|
||||
EXPECT_EQ("-1234", str(Format("{0}") << -1234));
|
||||
std::ostringstream os;
|
||||
os << INT_MIN;
|
||||
EXPECT_EQ(os.str(), str(Format("{0}") << INT_MIN));
|
||||
os.str(std::string());
|
||||
os << INT_MAX;
|
||||
EXPECT_EQ(os.str(), str(Format("{0}") << INT_MAX));
|
||||
EXPECT_EQ("42", str(Format("{0:d}") << 42));
|
||||
EXPECT_EQ("42", str(Format("{0}") << 42u));
|
||||
EXPECT_EQ("-42", str(Format("{0}") << -42));
|
||||
EXPECT_EQ("12345", str(Format("{0}") << 12345));
|
||||
EXPECT_EQ("67890", str(Format("{0}") << 67890));
|
||||
char buffer[256];
|
||||
sprintf(buffer, "%d", INT_MIN);
|
||||
EXPECT_EQ(buffer, str(Format("{0}") << INT_MIN));
|
||||
sprintf(buffer, "%d", INT_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0}") << INT_MAX));
|
||||
sprintf(buffer, "%u", UINT_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0}") << UINT_MAX));
|
||||
sprintf(buffer, "%ld", 0ul - LONG_MIN);
|
||||
EXPECT_EQ(buffer, str(Format("{0}") << LONG_MIN));
|
||||
sprintf(buffer, "%ld", LONG_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0}") << LONG_MAX));
|
||||
sprintf(buffer, "%lu", ULONG_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0}") << ULONG_MAX));
|
||||
}
|
||||
|
||||
TEST(FormatterTest, FormatHex) {
|
||||
EXPECT_EQ("0", str(Format("{0:x}") << 0));
|
||||
EXPECT_EQ("42", str(Format("{0:x}") << 0x42));
|
||||
EXPECT_EQ("42", str(Format("{0:x}") << 0x42u));
|
||||
EXPECT_EQ("-42", str(Format("{0:x}") << -0x42));
|
||||
EXPECT_EQ("12345678", str(Format("{0:x}") << 0x12345678));
|
||||
EXPECT_EQ("90abcdef", str(Format("{0:x}") << 0x90abcdef));
|
||||
EXPECT_EQ("12345678", str(Format("{0:X}") << 0x12345678));
|
||||
EXPECT_EQ("90ABCDEF", str(Format("{0:X}") << 0x90ABCDEF));
|
||||
char buffer[256];
|
||||
sprintf(buffer, "-%x", 0u - INT_MIN);
|
||||
EXPECT_EQ(buffer, str(Format("{0:x}") << INT_MIN));
|
||||
sprintf(buffer, "%x", INT_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0:x}") << INT_MAX));
|
||||
sprintf(buffer, "%x", UINT_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0:x}") << UINT_MAX));
|
||||
sprintf(buffer, "-%lx", 0ul - LONG_MIN);
|
||||
EXPECT_EQ(buffer, str(Format("{0:x}") << LONG_MIN));
|
||||
sprintf(buffer, "%lx", LONG_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0:x}") << LONG_MAX));
|
||||
sprintf(buffer, "%lx", ULONG_MAX);
|
||||
EXPECT_EQ(buffer, str(Format("{0:x}") << ULONG_MAX));
|
||||
}
|
||||
|
||||
TEST(FormatterTest, FormatChar) {
|
||||
@ -283,8 +320,25 @@ TEST(FormatterTest, FormatString) {
|
||||
EXPECT_EQ("test", str(Format("{0}") << std::string("test")));
|
||||
}
|
||||
|
||||
TEST(FormatterTest, FormatPointer) {
|
||||
EXPECT_EQ("0x0", str(Format("{0}") << reinterpret_cast<void*>(0)));
|
||||
}
|
||||
|
||||
class Date {
|
||||
int year_, month_, day_;
|
||||
public:
|
||||
Date(int year, int month, int day) : year_(year), month_(month), day_(day) {}
|
||||
|
||||
friend std::ostream &operator<<(std::ostream &os, const Date &d) {
|
||||
os << d.year_ << '-' << d.month_ << '-' << d.day_;
|
||||
return os;
|
||||
}
|
||||
};
|
||||
|
||||
TEST(FormatterTest, FormatCustomArg) {
|
||||
EXPECT_EQ("a string", str(Format("{0}") << TestString("a string")));
|
||||
std::string s = str(fmt::Format("The date is {0}") << Date(2012, 12, 9));
|
||||
EXPECT_EQ("The date is 2012-12-9", s);
|
||||
}
|
||||
|
||||
TEST(FormatterTest, FormatStringFromSpeedTest) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user