Column types refactoring.

sqlbuilder/integer_expression.go

@@ -0,0 +1,82 @@
+package sqlbuilder
+
+type IntegerExpression interface {
+	NumericExpression
+
+	//AddInt(value int) IntegerExpression
+	//AddInt64(value int) IntegerExpression
+
+	BitAnd(expression IntegerExpression) IntegerExpression
+	BitOr(expression IntegerExpression) IntegerExpression
+	BitXor(expression IntegerExpression) IntegerExpression
+	BitNot() IntegerExpression
+}
+
+type integerInterfaceImpl struct {
+	parent IntegerExpression
+}
+
+//func (i *integerInterfaceImpl) AddInt(expression IntegerExpression) IntegerExpression {
+//	return NewBinaryIntegerExpression(i.parent, expression, " & ")
+//}
+//
+//func (i *integerInterfaceImpl) AddInt64(expression IntegerExpression) IntegerExpression {
+//	return NewBinaryIntegerExpression(i.parent, expression, " & ")
+//}
+
+func (i *integerInterfaceImpl) BitAnd(expression IntegerExpression) IntegerExpression {
+	return NewBinaryIntegerExpression(i.parent, expression, " & ")
+}
+
+func (i *integerInterfaceImpl) BitOr(expression IntegerExpression) IntegerExpression {
+	return NewBinaryIntegerExpression(i.parent, expression, " | ")
+}
+
+func (i *integerInterfaceImpl) BitXor(expression IntegerExpression) IntegerExpression {
+	return NewBinaryIntegerExpression(i.parent, expression, " # ")
+}
+
+func (i *integerInterfaceImpl) BitNot() IntegerExpression {
+	return NewPrefixIntegerExpression(i.parent, " ~")
+}
+
+//---------------------------------------------------//
+type binaryIntegerExpression struct {
+	expressionInterfaceImpl
+	numericInterfaceImpl
+	integerInterfaceImpl
+
+	binaryExpression
+}
+
+func NewBinaryIntegerExpression(lhs, rhs IntegerExpression, operator string) IntegerExpression {
+	integerExpression := binaryIntegerExpression{}
+
+	integerExpression.expressionInterfaceImpl.parent = &integerExpression
+	integerExpression.numericInterfaceImpl.parent = &integerExpression
+	integerExpression.integerInterfaceImpl.parent = &integerExpression
+
+	integerExpression.binaryExpression = newBinaryExpression(lhs, rhs, []byte(operator))
+
+	return &integerExpression
+}
+
+//---------------------------------------------------//
+type prefixIntegerExpression struct {
+	expressionInterfaceImpl
+	numericInterfaceImpl
+	integerInterfaceImpl
+
+	prefixExpression
+}
+
+func NewPrefixIntegerExpression(expression IntegerExpression, operator string) IntegerExpression {
+	integerExpression := prefixIntegerExpression{}
+	integerExpression.prefixExpression = newPrefixExpression(expression, []byte(operator))
+
+	integerExpression.expressionInterfaceImpl.parent = &integerExpression
+	integerExpression.numericInterfaceImpl.parent = &integerExpression
+	integerExpression.integerInterfaceImpl.parent = &integerExpression
+
+	return &integerExpression
+}