1 /*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 * @LastModified: Nov 2017
4 */
5 /*
6 * Licensed to the Apache Software Foundation (ASF) under one or more
7 * contributor license agreements. See the NOTICE file distributed with
8 * this work for additional information regarding copyright ownership.
9 * The ASF licenses this file to You under the Apache License, Version 2.0
10 * (the "License"); you may not use this file except in compliance with
11 * the License. You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22 package com.sun.org.apache.xalan.internal.xsltc.compiler;
23
24 import com.sun.org.apache.bcel.internal.generic.GOTO;
25 import com.sun.org.apache.bcel.internal.generic.InstructionHandle;
26 import com.sun.org.apache.bcel.internal.generic.InstructionList;
27 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
28 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodType;
30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
31 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
32
33 /**
34 * @author Jacek Ambroziak
35 * @author Santiago Pericas-Geertsen
36 * @author Morten Jorgensen
37 */
38 final class LogicalExpr extends Expression {
39
40 public static final int OR = 0;
41 public static final int AND = 1;
42
43 private final int _op; // operator
44 private Expression _left; // first operand
45 private Expression _right; // second operand
46
47 private static final String[] Ops = { "or", "and" };
48
49 /**
50 * Creates a new logical expression - either OR or AND. Note that the
51 * left- and right-hand side expressions can also be logical expressions,
52 * thus creating logical trees representing structures such as
53 * (a and (b or c) and d), etc...
54 */
55 public LogicalExpr(int op, Expression left, Expression right) {
56 _op = op;
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1 /*
2 * Copyright (c) 2017, 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.xalan.internal.xsltc.compiler;
22
23 import com.sun.org.apache.bcel.internal.generic.GOTO;
24 import com.sun.org.apache.bcel.internal.generic.InstructionHandle;
25 import com.sun.org.apache.bcel.internal.generic.InstructionList;
26 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
27 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
28 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodType;
29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
31
32 /**
33 * @author Jacek Ambroziak
34 * @author Santiago Pericas-Geertsen
35 * @author Morten Jorgensen
36 * @LastModified: Nov 2017
37 */
38 final class LogicalExpr extends Expression {
39
40 public static final int OR = 0;
41 public static final int AND = 1;
42
43 private final int _op; // operator
44 private Expression _left; // first operand
45 private Expression _right; // second operand
46
47 private static final String[] Ops = { "or", "and" };
48
49 /**
50 * Creates a new logical expression - either OR or AND. Note that the
51 * left- and right-hand side expressions can also be logical expressions,
52 * thus creating logical trees representing structures such as
53 * (a and (b or c) and d), etc...
54 */
55 public LogicalExpr(int op, Expression left, Expression right) {
56 _op = op;
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