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 package org.apache.bcel.generic;
18
19 /**
20 * Denotes that an instruction may start the process of loading and resolving the referenced class in the Virtual Machine.
21 */
22 public interface LoadClass {
23
24 /**
25 * Returns the {@link ObjectType} of the referenced class or interface that may be loaded and resolved.
26 *
27 * @param cpg A ConstantPoolGen
28 * @return object type that may be loaded or null if a primitive is referenced
29 */
30 ObjectType getLoadClassType(ConstantPoolGen cpg);
31
32 /**
33 * 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
34 * 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
35 * 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
36 * {@code int[][]}.
37 *
38 * @param cpg A ConstantPoolGen
39 * @return the type associated with this instruction.
40 * @see #getLoadClassType(ConstantPoolGen)
41 */
42 Type getType(ConstantPoolGen cpg);
43 }