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Adding complex numbers

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Henry Fredrick Schreiner 2017-04-05 09:25:16 -04:00
parent 897cb3e7f9
commit e779d15ef8
4 changed files with 61 additions and 0 deletions
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1
CHANGELOG.md
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@ -5,6 +5,7 @@
* Ini output now includes `=false` when `default_also` is true
* Ini no longer lists the help pointer
* Added test for inclusion in multiple files and linking, fixed issues (rarely needed for CLI, but nice for tools)
* Support for complex numbers
## Version 0.8

2
README.md
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@ -101,6 +101,8 @@ app.add_options(option_name,
help_string="",
default=false)
app.add_complex(... // Special case: support for complex numbers
app.add_flag(option_name,
int_or_bool = nothing,
help_string="")

27
include/CLI/App.hpp
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@ -399,6 +399,33 @@ public:
return opt;
}
/// Add a complex number
template<typename T>
Option* add_complex(
std::string name, T& variable,
std::string description="", bool defaulted=false,
std::string label="COMPLEX") {
CLI::callback_t fun = [&variable](results_t res){
if(res.size()!=2)
return false;
double x,y;
bool worked = detail::lexical_cast(res[0], x)
&& detail::lexical_cast(res[1], y);
if(worked)
variable = T(x,y);
return worked;
};
CLI::Option* opt = add_option(name, fun, description, defaulted);
opt->set_custom_option(label, 2);
if(defaulted) {
std::stringstream out;
out << variable;
opt->set_default_val(out.str());
}
return opt;
}
/// Add a configuration ini file option
Option* add_config(std::string name="--config",

31
tests/NewParseTest.cpp
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@ -58,3 +58,34 @@ TEST_F(TApp, DefaultComplex) {
EXPECT_EQ(cx(4,3), comp);
}
TEST_F(TApp, BuiltinComplex) {
cx comp {1, 2};
app.add_complex("-c,--complex", comp, "", true);
args = {"-c", "4", "3"};
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("1"));
EXPECT_THAT(help, HasSubstr("2"));
EXPECT_THAT(help, HasSubstr("COMPLEX"));
EXPECT_EQ(cx(1,2), comp);
run();
EXPECT_EQ(cx(4,3), comp);
}
TEST_F(TApp, BuiltinComplexIgnoreI) {
cx comp {1, 2};
app.add_complex("-c,--complex", comp);
args = {"-c", "4", "3i"};
run();
EXPECT_EQ(cx(4,3), comp);
}