Extract parser models

parsers/models.go

@@ -0,0 +1,48 @@
+package parsers
+
+type LogicalExpressionType int
+
+const (
+	LogicalExpressionTypeOr LogicalExpressionType = iota
+	LogicalExpressionTypeAnd
+)
+
+type ConstantType int
+
+const (
+	ConstantTypeString ConstantType = iota
+	ConstantTypeInteger
+	ConstantTypeFloat
+	ConstantTypeBoolean
+)
+
+type SelectStmt struct {
+	Columns []FieldPath
+	Table   Table
+	Filters interface{}
+}
+
+type Table struct {
+	Value string
+}
+
+type FieldPath struct {
+	Alias string
+	Path  []string
+}
+
+type LogicalExpression struct {
+	Expressions []interface{}
+	Operation   LogicalExpressionType
+}
+
+type ComparisonExpression struct {
+	Left      interface{}
+	Right     interface{}
+	Operation string
+}
+
+type Constant struct {
+	Type  ConstantType
+	Value interface{}
+}