Implement STRINGEQUALS

parsers/models.go

@@ -20,6 +20,7 @@ const (
 	SelectItemTypeObject
 	SelectItemTypeArray
 	SelectItemTypeConstant
+	SelectItemTypeFunctionCall
 )
 
 type SelectItem struct {
@@ -75,3 +76,14 @@ type OrderExpression struct {
 	SelectItem SelectItem
 	Direction  OrderDirection
 }
+
+type FunctionCallType string
+
+const (
+	FunctionCallStringEquals FunctionCallType = "StringEquals"
+)
+
+type FunctionCall struct {
+	Arguments []interface{}
+	Type      FunctionCallType
+}