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Implement numeric alignment. Make integer formatting faster.

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This commit is contained in:
Victor Zverovich
2012-12-24 08:34:44 -08:00
parent 1b9c22c161
commit ccbe94189c
3 changed files with 96 additions and 25 deletions
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format_test.cc
+29
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@@ -293,7 +293,36 @@ TEST(FormatterTest, RightAlign) {
EXPECT_EQ(" def", str(Format("{0:>5}") << TestString("def")));
}
TEST(FormatterTest, NumericAlign) {
EXPECT_EQ(" 42", str(Format("{0:=4}") << 42));
EXPECT_EQ("+ 42", str(Format("{0:=+4}") << 42));
EXPECT_EQ(" 42", str(Format("{0:=4o}") << 042));
EXPECT_EQ("+ 42", str(Format("{0:=+4o}") << 042));
EXPECT_EQ(" 42", str(Format("{0:=4x}") << 0x42));
EXPECT_EQ("+ 42", str(Format("{0:=+4x}") << 0x42));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42));
EXPECT_EQ(" 42", str(Format("{0:=5}") << 42u));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42l));
EXPECT_EQ(" 42", str(Format("{0:=5}") << 42ul));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42.0));
EXPECT_EQ("- 42", str(Format("{0:=5}") << -42.0l));
EXPECT_THROW_MSG(Format("{0:=5") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:=5}") << 'c',
FormatError, "format specifier '=' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:=5}") << "abc",
FormatError, "format specifier '=' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:=8}") << reinterpret_cast<void*>(0xface),
FormatError, "format specifier '=' requires numeric argument");
EXPECT_THROW_MSG(Format("{0:=5}") << TestString("def"),
FormatError, "format specifier '=' requires numeric argument");
}
TEST(FormatterTest, Fill) {
EXPECT_THROW_MSG(Format("{0:{<5}") << 'c',
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:{<5}}") << 'c',
FormatError, "invalid fill character '{'");
EXPECT_EQ("**42", str(Format("{0:*>4}") << 42));
EXPECT_EQ("**-42", str(Format("{0:*>5}") << -42));
EXPECT_EQ("***42", str(Format("{0:*>5}") << 42u));