/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.druid.sql.dialect.sqlserver.parser;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLName;
import com.alibaba.druid.sql.ast.expr.SQLPropertyExpr;
import com.alibaba.druid.sql.dialect.sqlserver.ast.expr.SQLServerObjectReferenceExpr;
import com.alibaba.druid.sql.parser.Lexer;
import com.alibaba.druid.sql.parser.SQLExprParser;
import com.alibaba.druid.sql.parser.Token;
public class SQLServerExprParser extends SQLExprParser {
public SQLServerExprParser(Lexer lexer){
super(lexer);
}
public SQLServerExprParser(String sql) {
super(new SQLServerLexer(sql));
this.lexer.nextToken();
}
public SQLExpr primaryRest(SQLExpr expr) {
if (lexer.token() == Token.DOTDOT) {
expr = nameRest((SQLName) expr);
}
return super.primaryRest(expr);
}
public SQLName nameRest(SQLName expr) {
if (lexer.token() == Token.DOTDOT) {
lexer.nextToken();
String text = lexer.stringVal();
lexer.nextToken();
SQLServerObjectReferenceExpr owner = new SQLServerObjectReferenceExpr(expr);
expr = new SQLPropertyExpr(owner, text);
}
return super.nameRest(expr);
}
}