Array: Move Join into the base class, available for programmers

lib/base/array-script.cpp

@@ -107,22 +107,7 @@ static Value ArrayJoin(const Value& separator)
 	ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
 	Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
 	REQUIRE_NOT_NULL(self);
-
-	Value result;
-	bool first = true;
-
-	ObjectLock olock(self);
-	for (const Value& item : self) {
-		if (first) {
-			first = false;
-		} else {
-			result = result + separator;
-		}
-
-		result = result + item;
-	}
-
-	return result;
+	return self->Join(separator);
 }
 
 static Array::Ptr ArrayReverse()

lib/base/array.cpp

@@ -297,6 +297,26 @@ String Array::ToString() const
 	return msgbuf.str();
 }
 
+Value Array::Join(const Value& separator) const
+{
+	Value result;
+	bool first = true;
+
+	ObjectLock olock(this);
+
+	for (const Value& item : m_Data) {
+		if (first) {
+			first = false;
+		} else {
+			result = result + separator;
+		}
+
+		result = result + item;
+	}
+
+	return result;
+}
+
 Array::Ptr Array::Unique() const
 {
 	std::set<Value> result;

lib/base/array.hpp

@@ -94,6 +94,7 @@ public:
 	void Sort(bool overrideFrozen = false);
 
 	String ToString() const override;
+	Value Join(const Value& separator) const;
 
 	Array::Ptr Unique() const;
 	void Freeze();