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/* Copyright © 2016 Taylor C. Richberger <taywee@gmx.com>
* This code is released under the license described in the LICENSE file
*/
#include <string>
#include <vector>
#include <list>
#include <functional>
namespace args
{
class Base
{
protected:
bool matched;
public:
Base() : matched(false) {}
virtual ~Base() {}
virtual bool Matched() const
{
return matched;
}
};
class Group : public Base
{
private:
std::vector<Base*> children;
std::function<bool(int, int)> validator;
public:
Group(const std::function<bool(int, int)> &validator = Validators::DontCare) : validator(validator) {}
virtual ~Group() {}
void Add(Base &child)
{
children.emplace_back(&child);
}
int MatchedChildren() const
{
int sum = 0;
for (const Base * child: children)
{
if (child->Matched())
{
++sum;
}
}
return sum;
}
virtual bool Matched() const override
{
return validator(children.size(), MatchedChildren());
}
struct Validators
{
static bool Xor(int children, int matched)
{
return matched == 1;
}
static bool AtLeastOne(int children, int matched)
{
return matched >= 1;
}
static bool AtMostOne(int children, int matched)
{
return matched <= 1;
}
static bool All(int children, int matched)
{
return children == matched;
}
static bool DontCare(int children, int matched)
{
return true;
}
static bool CareTooMuch(int children, int matched)
{
return false;
}
static bool None(int children, int matched)
{
return matched == 0;
}
};
};
class ArgumentParser
{
private:
std::string prog;
std::string description;
std::string epilog;
Group args;
public:
ArgumentParser(
const std::string &prog,
const std::string &description,
const std::string &epilog = std::string()) : prog(prog), description(description), epilog(epilog) {}
void ParseArgs(const std::vector<std::string> &args)
{
}
void ParseCLI(const int argc, const char * const * const argv)
{
std::vector<std::string> args;
for (int i = 1; i < argc; ++i)
{
args.emplace_back(argv[i]);
}
ParseArgs(args);
}
};
}
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