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Implement automatic argument indexing.

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This commit is contained in:
Victor Zverovich
2012-12-27 06:56:55 -08:00
parent 73f13eeb5b
commit 8412ad6aeb
4 changed files with 44 additions and 16 deletions
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format_test.cc
+17 -5
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@@ -235,8 +235,8 @@ TEST(FormatterTest, ArgsInDifferentPositions) {
TEST(FormatterTest, ArgErrors) {
EXPECT_THROW_MSG(Format("{"), FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{}"), FormatError,
"missing argument index in format string");
EXPECT_THROW_MSG(Format("{x}"), FormatError,
"invalid argument index in format string");
EXPECT_THROW_MSG(Format("{0"), FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0}"), FormatError,
"argument index is out of range in format");
@@ -257,6 +257,19 @@ TEST(FormatterTest, ArgErrors) {
EXPECT_THROW_MSG(Format(format), FormatError, "number is too big in format");
}
TEST(FormatterTest, AutoArgIndex) {
EXPECT_EQ("abc", str(Format("{}{}{}") << 'a' << 'b' << 'c'));
EXPECT_THROW_MSG(Format("{0}{}") << 'a' << 'b',
FormatError, "cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(Format("{}{0}") << 'a' << 'b',
FormatError, "cannot switch from automatic to manual argument indexing");
EXPECT_EQ("1.2", str(Format("{:.{}}") << 1.2345 << 2));
EXPECT_THROW_MSG(Format("{0}:.{}") << 1.2345 << 2,
FormatError, "cannot switch from manual to automatic argument indexing");
EXPECT_THROW_MSG(Format("{:.{0}}") << 1.2345 << 2,
FormatError, "cannot switch from automatic to manual argument indexing");
}
TEST(FormatterTest, EmptySpecs) {
EXPECT_EQ("42", str(Format("{0:}") << 42));
}
@@ -426,7 +439,6 @@ TEST(FormatterTest, SpaceSign) {
}
TEST(FormatterTest, HashFlag) {
// TODO
EXPECT_EQ("42", str(Format("{0:#}") << 42));
EXPECT_EQ("-42", str(Format("{0:#}") << -42));
EXPECT_EQ("0x42", str(Format("{0:#x}") << 0x42));
@@ -589,8 +601,8 @@ TEST(FormatterTest, RuntimePrecision) {
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.{}") << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.{}}") << 0,
FormatError, "missing argument index in format string");
EXPECT_THROW_MSG(Format("{0:.{x}}") << 0,
FormatError, "invalid argument index in format string");
EXPECT_THROW_MSG(Format("{0:.{1}") << 0 << 0,
FormatError, "unmatched '{' in format");
EXPECT_THROW_MSG(Format("{0:.{1}}") << 0,