boost::optional<data::command::iterator>
metashell::parse_pragma(const data::command& cmd_)
{
data::command::iterator i = skip_whitespace(cmd_.begin(), cmd_.end());
if (i != cmd_.end() && (i->type() == data::token_type::p_pragma ||
i->type() == data::token_type::operator_pound))
{
i = skip_whitespace(skip(i), cmd_.end());
if (i != cmd_.end() && i->type() == data::token_type::identifier &&
(i->value() == "metashell" || i->value() == "msh"))
{
i = skip_whitespace(skip(i), cmd_.end());
if (i == cmd_.end() || i->value().empty())
{
throw exception("The name of the metashell pragma is missing.");
}
else if (i->type() == data::token_type::identifier)
{
return i;
}
else
{
std::ostringstream s;
s << "Invalid pragma name " << i->value();
throw exception(s.str());
}
}
}
return boost::none;
}
TEST(pragma_handler_map, processing_non_existing_handler)
{
pragma_handler_map m;
const data::command cmd{data::cpp_code(/* #pragma metashell */ "foo")};
null_displayer d;
ASSERT_ANY_THROW(m.process(cmd.begin(), cmd.end(), d));
}
TEST(pragma_handler_map, pragma_with_two_token_name_is_called)
{
bool foo_bar_run = false;
pragma_handler_map m;
m.add("foo", "bar", test_handler(foo_bar_run));
const data::command cmd{data::cpp_code(/* #pragma metashell */ "foo bar")};
null_displayer d;
m.process(cmd.begin(), cmd.end(), d);
ASSERT_TRUE(foo_bar_run);
}
TEST(pragma_handler_map, processing_existing_handler)
{
bool foo_run = false;
pragma_handler_map m;
m.add("foo", test_handler(foo_run));
const data::command cmd{data::cpp_code(/* #pragma metashell */ "foo")};
null_displayer d;
m.process(cmd.begin(), cmd.end(), d);
ASSERT_TRUE(foo_run);
}
TEST(pragma_handler_map,
pragma_prefix_is_selected_when_longer_version_is_available)
{
bool foo_bar_run = false;
bool foo_run = false;
pragma_handler_map m;
m.add("foo", test_handler(foo_run));
m.add("foo", "bar", test_handler(foo_bar_run));
const data::command cmd{data::cpp_code(/* #pragma metashell */ "foo x")};
null_displayer d;
m.process(cmd.begin(), cmd.end(), d);
ASSERT_TRUE(foo_run);
ASSERT_FALSE(foo_bar_run);
}
inline bool is_environment_setup_command(const data::command& cmd_)
{
return is_environment_setup_command(cmd_.begin(), cmd_.end());
}