diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/common/command_line.h | 66 |
1 files changed, 57 insertions, 9 deletions
diff --git a/src/common/command_line.h b/src/common/command_line.h index 2f64f5448..3a869bb26 100644 --- a/src/common/command_line.h +++ b/src/common/command_line.h @@ -33,6 +33,7 @@ #include <functional> #include <iostream> #include <sstream> +#include <array> #include <type_traits> #include <boost/program_options/parsers.hpp> @@ -48,7 +49,7 @@ namespace command_line //! \return True if `str` is `is_iequal("n" || "no" || `tr("no"))`. bool is_no(const std::string& str); - template<typename T, bool required = false, bool dependent = false> + template<typename T, bool required = false, bool dependent = false, int NUM_DEPS = 1> struct arg_descriptor; template<typename T> @@ -98,6 +99,22 @@ namespace command_line bool not_use_default; }; + template<typename T, int NUM_DEPS> + struct arg_descriptor<T, false, true, NUM_DEPS> + { + typedef T value_type; + + const char* name; + const char* description; + + T default_value; + + std::array<const arg_descriptor<bool, false> *, NUM_DEPS> ref; + std::function<T(std::array<bool, NUM_DEPS>, bool, T)> depf; + + bool not_use_default; + }; + template<typename T> boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, true>& /*arg*/) { @@ -127,6 +144,28 @@ namespace command_line return semantic; } + template<typename T, int NUM_DEPS> + boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false, true, NUM_DEPS>& arg) + { + auto semantic = boost::program_options::value<T>(); + if (!arg.not_use_default) { + std::array<bool, NUM_DEPS> depval; + depval.fill(false); + std::ostringstream format; + format << arg.depf(depval, true, arg.default_value); + for (size_t i = 0; i < depval.size(); ++i) + { + depval.fill(false); + depval[i] = true; + format << ", " << arg.depf(depval, true, arg.default_value) << " if '" << arg.ref[i]->name << "'"; + } + for (size_t i = 0; i < depval.size(); ++i) + depval[i] = arg.ref[i]->default_value; + semantic->default_value(arg.depf(depval, true, arg.default_value), format.str()); + } + return semantic; + } + template<typename T> boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false>& arg, const T& def) { @@ -144,8 +183,8 @@ namespace command_line return semantic; } - template<typename T, bool required, bool dependent> - void add_arg(boost::program_options::options_description& description, const arg_descriptor<T, required, dependent>& arg, bool unique = true) + template<typename T, bool required, bool dependent, int NUM_DEPS> + void add_arg(boost::program_options::options_description& description, const arg_descriptor<T, required, dependent, NUM_DEPS>& arg, bool unique = true) { if (0 != description.find_nothrow(arg.name, false)) { @@ -214,15 +253,15 @@ namespace command_line } } - template<typename T, bool required, bool dependent> - typename std::enable_if<!std::is_same<T, bool>::value, bool>::type has_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent>& arg) + template<typename T, bool required, bool dependent, int NUM_DEPS> + typename std::enable_if<!std::is_same<T, bool>::value, bool>::type has_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent, NUM_DEPS>& arg) { auto value = vm[arg.name]; return !value.empty(); } - template<typename T, bool required, bool dependent> - bool is_arg_defaulted(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent>& arg) + template<typename T, bool required, bool dependent, int NUM_DEPS> + bool is_arg_defaulted(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent, NUM_DEPS>& arg) { return vm[arg.name].defaulted(); } @@ -233,14 +272,23 @@ namespace command_line return arg.depf(get_arg(vm, arg.ref), is_arg_defaulted(vm, arg), vm[arg.name].template as<T>()); } + template<typename T, int NUM_DEPS> + T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, false, true, NUM_DEPS>& arg) + { + std::array<bool, NUM_DEPS> depval; + for (size_t i = 0; i < depval.size(); ++i) + depval[i] = get_arg(vm, *arg.ref[i]); + return arg.depf(depval, is_arg_defaulted(vm, arg), vm[arg.name].template as<T>()); + } + template<typename T, bool required> T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required>& arg) { return vm[arg.name].template as<T>(); } - template<bool dependent> - inline bool has_arg(const boost::program_options::variables_map& vm, const arg_descriptor<bool, false, dependent>& arg) + template<bool dependent, int NUM_DEPS> + inline bool has_arg(const boost::program_options::variables_map& vm, const arg_descriptor<bool, false, dependent, NUM_DEPS>& arg) { return get_arg(vm, arg); } |