Added the ast namespace.

src/lobos/ast.clj

@@ -0,0 +1,47 @@
+;; Copyright (c) Nicolas Buduroi. All rights reserved.
+;; The use and distribution terms for this software are covered by the
+;; Eclipse Public License 1.0 which can be found in the file
+;; epl-v10.html at the root of this distribution. By using this software
+;; in any fashion, you are agreeing to be bound by the terms of this
+;; license.
+;; You must not remove this notice, or any other, from this software.
+
+(ns lobos.ast
+  "Abstract SQL syntax tree for the DDL part of the language.")
+
+;;;; Atomic records
+
+(defrecord Identifier [value])
+
+(defrecord Literal [value])
+
+;;;; Expression records
+
+(defrecord DataTypeExpression [dtype args])
+
+;; not going down the rabbit hole yet!
+(defrecord ValueExpression [specification])
+
+;;;; Definition records
+
+(defrecord ColumnDefinition
+  [cname data-type default identity not-null others])
+
+(defrecord UniqueConstraintDefinition
+  [cname ctype columns])
+
+(defrecord ForeignKeyConstraintDefinition
+  [cname columns refered match-type triggered-action])
+
+(defrecord CheckConstraintDefinition
+  [cname predicate])
+
+;;;; Statement records
+
+(defrecord CreateSchemaStatement [cnx sname elements])
+
+(defrecord CreateTableStatement [cnx tname elements])
+
+(defrecord AlterTableStatement [cnx tname action])
+
+(defrecord DropStatement [cnx otype oname behavior])