X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frangecondition.h;h=a72fec2d1475db075baffbeb1ed46aa3979480e0;hb=746329e61ac9f26962af740b0b11dee716803521;hp=c107287919f2fe69140fe347ed54c659ad74bdc6;hpb=715006802a65fa5f541f2f4bcccbdd62d1a2bf09;p=poefilter.git

diff --git a/source/rangecondition.h b/source/rangecondition.h
index c107287..a72fec2 100644
--- a/source/rangecondition.h
+++ b/source/rangecondition.h
@@ -19,7 +19,10 @@ public:
 	RangeCondition(Type);
 	RangeCondition(Type, Type);
 
-	virtual Condition *clone() const;
+	virtual RangeCondition<T> *clone() const;
+	virtual bool can_merge(const Condition &, const CompoundCondition &) const;
+	virtual RangeCondition<T> *merge(const std::vector<const Condition *> &, const CompoundCondition &) const;
+	virtual bool is_viable() const { return min<=max; }
 	virtual void add_lines(std::list<FilterStatement> &) const;
 };
 
@@ -49,7 +52,7 @@ typedef RangeCondition<QualityTraits> QualityCondition;
 struct ItemLevelTraits
 {
 	typedef unsigned Type;
-	static unsigned get_min() { return 0; }
+	static unsigned get_min() { return 1; }
 	static unsigned get_max() { return 100; }
 	static const char *get_keyword() { return "ItemLevel"; }
 };
@@ -60,7 +63,7 @@ typedef RangeCondition<ItemLevelTraits> ItemLevelCondition;
 struct DropLevelTraits
 {
 	typedef unsigned Type;
-	static unsigned get_min() { return 0; }
+	static unsigned get_min() { return 1; }
 	static unsigned get_max() { return 100; }
 	static const char *get_keyword() { return "DropLevel"; }
 };
@@ -125,11 +128,55 @@ RangeCondition<T>::RangeCondition(Type n, Type x):
 { }
 
 template<typename T>
-Condition *RangeCondition<T>::clone() const
+RangeCondition<T> *RangeCondition<T>::clone() const
 {
 	return new RangeCondition<T>(min, max);
 }
 
+template<typename T>
+bool RangeCondition<T>::can_merge(const Condition &other, const CompoundCondition &parent) const
+{
+	const RangeCondition<T> *other_range = dynamic_cast<const RangeCondition<T> *>(&other);
+	if(!other_range)
+		return false;
+
+	if(dynamic_cast<const AndCondition *>(&parent))
+		return true;
+	else if(dynamic_cast<const OrCondition *>(&parent))
+		return min<=other_range->max+1 && max+1>=other_range->min;
+	else
+		return false;
+}
+
+template<typename T>
+RangeCondition<T> *RangeCondition<T>::merge(const std::vector<const Condition *> &conditions, const CompoundCondition &parent) const
+{
+	if(conditions.empty())
+		return 0;
+
+	bool intersect = dynamic_cast<const AndCondition *>(&parent);
+	RangeCondition<T> *result;
+	if(intersect)
+		result = new RangeCondition<T>(Traits::get_min(), Traits::get_max());
+	else
+		result = new RangeCondition<T>(Traits::get_max(), Traits::get_min());
+	for(std::vector<const Condition *>::const_iterator i=conditions.begin(); i!=conditions.end(); ++i)
+	{
+		const RangeCondition<T> *c = static_cast<const RangeCondition<T> *>(*i);
+		if(intersect)
+		{
+			result->min = std::max(result->min, c->min);
+			result->max = std::min(result->max, c->max);
+		}
+		else
+		{
+			result->min = std::min(result->min, c->min);
+			result->max = std::max(result->max, c->max);
+		}
+	}
+	return result;
+}
+
 template<typename T>
 void RangeCondition<T>::add_lines(std::list<FilterStatement> &st) const
 {