01: /*
02:
03: Derby - Class org.apache.derby.impl.services.bytecode.BCExpr
04:
05: Licensed to the Apache Software Foundation (ASF) under one or more
06: contributor license agreements. See the NOTICE file distributed with
07: this work for additional information regarding copyright ownership.
08: The ASF licenses this file to you under the Apache License, Version 2.0
09: (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: }
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