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Java > Open Source Codes > org > apache > derby > impl > services > bytecode > BCExpr


1 /*
2
3    Derby - Class org.apache.derby.impl.services.bytecode.BCExpr
4
5    Licensed to the Apache Software Foundation (ASF) under one or more
6    contributor license agreements. See the NOTICE file distributed with
7    this work for additional information regarding copyright ownership.
8    The ASF licenses this file to you under the Apache License, Version 2.0
9    (the "License"); you may not use this file except in compliance with
10    the License. You may obtain a copy of the License at
11
12       http://www.apache.org/licenses/LICENSE-2.0
13
14    Unless required by applicable law or agreed to in writing, software
15    distributed under the License is distributed on an "AS IS" BASIS,
16    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17    See the License for the specific language governing permissions and
18    limitations under the License.
19
20  */
21
22 package org.apache.derby.impl.services.bytecode;
23
24 /**
25  *
26  * To be able to identify the expressions as belonging to this
27  * implementation, and to be able to generate code off of
28  * it if so.
29  *
30  */
31 interface BCExpr {
32
33     // maybe these should go into Declarations, instead?
34 // note there is no vm_boolean; boolean is an int
35 // except in arrays, where it is a byte.
36 short vm_void = -1; // not used in array mappings.
37 short vm_byte = 0;
38     short vm_short = 1;
39     short vm_int = 2;
40     short vm_long = 3;
41     short vm_float = 4;
42     short vm_double = 5;
43     short vm_char = 6;
44     short vm_reference = 7;
45
46 }
47
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