1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements.  See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License.  You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  */
18 package Mini;
19 import org.apache.bcel.generic.LocalVariableGen;
20 
21 /**
22  * Represents a variable declared in a LET expression or a FUN declaration.
23  *
24  * @version $Id$
25  */
26 public class Variable implements EnvEntry {
27   private ASTIdent name;         // Reference to the original declaration
28   private boolean  reserved;     // Is a key word?
29 
30   private int      line, column; // Extracted from name.getToken()
31   private String   var_name;     // Short for name.getName()
32   private LocalVariableGen local_var; // local var associated with this variable
33 
Variable(ASTIdent name)34   public Variable(ASTIdent name) {
35     this(name, false);
36   }
37 
Variable(ASTIdent name, boolean reserved)38   public Variable(ASTIdent name, boolean reserved) {
39     this.name     = name;
40     this.reserved = reserved;
41 
42     var_name = name.getName();
43     line     = name.getLine();
44     column   = name.getColumn();
45   }
46 
47   @Override
toString()48   public String toString() {
49     if(!reserved) {
50         return var_name + " declared at line " + line + ", column " + column;
51     } else {
52         return var_name + " <reserved key word>";
53     }
54   }
55 
getName()56   public ASTIdent getName()    { return name; }
getHashKey()57   public String   getHashKey() { return var_name; }
getLine()58   public int      getLine()    { return line; }
getColumn()59   public int      getColumn()  { return column; }
getType()60   public int      getType()    { return name.getType(); }
61 
setLocalVariable(LocalVariableGen local_var)62   void setLocalVariable(LocalVariableGen local_var) {
63     this.local_var = local_var;
64   }
getLocalVariable()65   LocalVariableGen getLocalVariable() { return local_var; }
66 }
67 
68