1 /*
2 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
3 */
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 package com.sun.org.apache.bcel.internal.generic;
22
23 import com.sun.org.apache.bcel.internal.Const;
24
25 /**
26 * Wrapper class for push operations, which are implemented either as BIPUSH,
27 * LDC or xCONST_n instructions.
28 *
29 * @version $Id$
30 * @LastModified: Jun 2019
31 */
32 public final class PUSH implements CompoundInstruction, VariableLengthInstruction {
33
34 private Instruction instruction;
35
36
37 /**
38 * This constructor also applies for values of type short, char, byte
39 *
40 * @param cp Constant pool
41 * @param value to be pushed
42 */
43 public PUSH(final ConstantPoolGen cp, final int value) {
44 if ((value >= -1) && (value <= 5)) {
45 instruction = InstructionConst.getInstruction(Const.ICONST_0 + value);
46 } else if (Instruction.isValidByte(value)) {
47 instruction = new BIPUSH((byte) value);
48 } else if (Instruction.isValidShort(value)) {
49 instruction = new SIPUSH((short) value);
50 } else {
159 * autoboxing to create this value parameter, as an alternative constructor will be called
160 *
161 * @param cp Constant pool
162 * @param value to be pushed
163 */
164 public PUSH(final ConstantPoolGen cp, final Character value) {
165 this(cp, value.charValue());
166 }
167
168
169 /**
170 * @param cp Constant pool
171 * @param value to be pushed
172 */
173 public PUSH(final ConstantPoolGen cp, final Boolean value) {
174 this(cp, value.booleanValue());
175 }
176
177
178 @Override
179 public final InstructionList getInstructionList() {
180 return new InstructionList(instruction);
181 }
182
183
184 public final Instruction getInstruction() {
185 return instruction;
186 }
187
188
189 /**
190 * @return mnemonic for instruction
191 */
192 @Override
193 public String toString() {
194 return instruction + " (PUSH)";
195 }
196 }
|
1 /*
2 * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
3 */
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 package com.sun.org.apache.bcel.internal.generic;
22
23 import com.sun.org.apache.bcel.internal.Const;
24
25 /**
26 * Wrapper class for push operations, which are implemented either as BIPUSH,
27 * LDC or xCONST_n instructions.
28 *
29 * @LastModified: Jan 2020
30 */
31 public final class PUSH implements CompoundInstruction, VariableLengthInstruction {
32
33 private Instruction instruction;
34
35
36 /**
37 * This constructor also applies for values of type short, char, byte
38 *
39 * @param cp Constant pool
40 * @param value to be pushed
41 */
42 public PUSH(final ConstantPoolGen cp, final int value) {
43 if ((value >= -1) && (value <= 5)) {
44 instruction = InstructionConst.getInstruction(Const.ICONST_0 + value);
45 } else if (Instruction.isValidByte(value)) {
46 instruction = new BIPUSH((byte) value);
47 } else if (Instruction.isValidShort(value)) {
48 instruction = new SIPUSH((short) value);
49 } else {
158 * autoboxing to create this value parameter, as an alternative constructor will be called
159 *
160 * @param cp Constant pool
161 * @param value to be pushed
162 */
163 public PUSH(final ConstantPoolGen cp, final Character value) {
164 this(cp, value.charValue());
165 }
166
167
168 /**
169 * @param cp Constant pool
170 * @param value to be pushed
171 */
172 public PUSH(final ConstantPoolGen cp, final Boolean value) {
173 this(cp, value.booleanValue());
174 }
175
176
177 @Override
178 public InstructionList getInstructionList() {
179 return new InstructionList(instruction);
180 }
181
182
183 public Instruction getInstruction() {
184 return instruction;
185 }
186
187
188 /**
189 * @return mnemonic for instruction
190 */
191 @Override
192 public String toString() {
193 return instruction + " (PUSH)";
194 }
195 }
|