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Support runtime errors.

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This commit is contained in:
Marcus Brinkmann 2017-11-20 15:07:09 +01:00 committed by Henry Schreiner
parent 642a67034d
commit 852929f0f6
3 changed files with 40 additions and 0 deletions
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2
include/CLI/App.hpp
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@ -31,6 +31,8 @@ namespace CLI {
(app).parse((argc), (argv)); \
} catch(const CLI::ParseError &e) { \
return (app).exit(e); \
} catch(const CLI::RuntimeError &e) { \
return e.get_exit_code(); \
}
#endif

8
include/CLI/Error.hpp
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@ -79,6 +79,14 @@ struct OptionAlreadyAdded : public ConstructionError {
: ConstructionError("OptionAlreadyAdded", name, ExitCodes::OptionAlreadyAdded) {}
};
// Runtime Errors
/// Does not output a diagnostic in CLI11_PARSE, but allows to return from main() with a specific error code.
struct RuntimeError : public Error {
RuntimeError(int exit_code = 1)
: Error("RuntimeError", "runtime error", exit_code, false) {}
};
// Parsing errors
/// Anything that can error in Parse

30
tests/SubcommandTest.cpp
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@ -168,6 +168,36 @@ TEST_F(TApp, Callbacks) {
EXPECT_TRUE(val);
}
TEST_F(TApp, RuntimeErrorInCallback) {
auto sub1 = app.add_subcommand("sub1");
sub1->set_callback([]() { throw CLI::RuntimeError(); });
auto sub2 = app.add_subcommand("sub2");
sub2->set_callback([]() { throw CLI::RuntimeError(2); });
args = {"sub1"};
EXPECT_THROW(run(), CLI::RuntimeError);
app.reset();
args = {"sub1"};
try {
run();
} catch(const CLI::RuntimeError &e) {
EXPECT_EQ(1, e.get_exit_code());
}
app.reset();
args = {"sub2"};
EXPECT_THROW(run(), CLI::RuntimeError);
app.reset();
args = {"sub2"};
try {
run();
} catch(const CLI::RuntimeError &e) {
EXPECT_EQ(2, e.get_exit_code());
}
}
TEST_F(TApp, NoFallThroughOpts) {
int val = 1;
app.add_option("--val", val);