#ifndef int_var_sl_h
#define int_var_sl_h

#include <chuffed/core/options.h>

// Integer variable with sparse domains.

class IntVarSL : public IntVar {
	vec<int> values;          // values that the var can take in ascending order
	IntVarEL *el;

	// transform value into index, type determines return value when a hole is encountered
	// 0: round down, 1: round up, 2: -1
	int transform(int v, int type);

public:

	IntVarSL(const IntVar& other, vec<int>& values);

	void attach(Propagator *p, int pos, int eflags);

	VarType getType() { return INT_VAR_SL; }

	// t = 0: [x != v], t = 1: [x = v], t = 2: [x >= v], t = 3: [x <= v]
	Lit getLit(int64_t v, int t);

	Lit getMinLit() const { return el->getMinLit(); }
	Lit getMaxLit() const { return el->getMaxLit(); }
	Lit getValLit() const { return el->getValLit(); }
	Lit getFMinLit(int64_t v) { return so.finesse ? ~el->getLit(transform(v, 0), 2) : el->getMinLit(); }
	Lit getFMaxLit(int64_t v) { return so.finesse ? ~el->getLit(transform(v, 1), 3) : el->getMaxLit(); }

	bool setMin(int64_t v, Reason r = NULL, bool channel = true);
	bool setMax(int64_t v, Reason r = NULL, bool channel = true);
	bool setVal(int64_t v, Reason r = NULL, bool channel = true);
	bool remVal(int64_t v, Reason r = NULL, bool channel = true);

	void channel(int val, int val_type, int sign);
	void debug();
};


#endif