1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * https://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.bcel.generic;
20
21 /**
22 * Denotes that an instruction may start the process of loading and resolving the referenced class in the Virtual Machine.
23 */
24 public interface LoadClass {
25
26 /**
27 * Returns the {@link ObjectType} of the referenced class or interface that may be loaded and resolved.
28 *
29 * @param cpg A ConstantPoolGen
30 * @return object type that may be loaded or null if a primitive is referenced
31 */
32 ObjectType getLoadClassType(ConstantPoolGen cpg);
33
34 /**
35 * Returns the type associated with this instruction. LoadClass instances are always typed, but this type does not always refer to the type of the class or
36 * interface that it possibly forces to load. For example, {@link GETFIELD} would return the type of the field and not the type of the class where the field
37 * is defined. If no class is forced to be loaded, {@code null} is returned. An example for this is an {@link NEWARRAY} instruction that creates an
38 * {@code int[][]}.
39 *
40 * @param cpg A ConstantPoolGen
41 * @return the type associated with this instruction.
42 * @see #getLoadClassType(ConstantPoolGen)
43 */
44 Type getType(ConstantPoolGen cpg);
45 }