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- /* *******************************************************************
- * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
- * All rights reserved.
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Public License v 2.0
- * which accompanies this distribution and is available at
- * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
- *
- * Contributors:
- * PARC initial implementation
- * ******************************************************************/
-
- package org.aspectj.weaver.patterns;
-
- import java.io.IOException;
- import java.lang.reflect.Modifier;
- import java.util.HashMap;
- import java.util.Map;
-
- import org.aspectj.weaver.CompressingDataOutputStream;
- import org.aspectj.weaver.VersionedDataInputStream;
-
- public class ModifiersPattern extends PatternNode {
- private int requiredModifiers;
- private int forbiddenModifiers;
-
- public static final ModifiersPattern ANY = new ModifiersPattern(0, 0);
-
- private static Map<String, Integer> modifierFlags = null;
-
- static {
- modifierFlags = new HashMap<>();
- int flag = 1;
- while (flag <= Modifier.STRICT) {
- String flagName = Modifier.toString(flag);
- modifierFlags.put(flagName, flag);
- flag = flag << 1;
- }
- /* Modifier.SYNTHETIC */
- modifierFlags.put("synthetic", 0x1000);
- }
-
- public ModifiersPattern(int requiredModifiers, int forbiddenModifiers) {
- this.requiredModifiers = requiredModifiers;
- this.forbiddenModifiers = forbiddenModifiers;
- }
-
- public String toString() {
- if (this == ANY) {
- return "";
- }
-
- String ret = Modifier.toString(requiredModifiers);
- if (forbiddenModifiers == 0) {
- return ret;
- } else {
- return ret + " !" + Modifier.toString(forbiddenModifiers);
- }
- }
-
- public boolean equals(Object other) {
- if (!(other instanceof ModifiersPattern)) {
- return false;
- }
- ModifiersPattern o = (ModifiersPattern) other;
- return o.requiredModifiers == this.requiredModifiers && o.forbiddenModifiers == this.forbiddenModifiers;
- }
-
- public int hashCode() {
- int result = 17;
- result = 37 * result + requiredModifiers;
- result = 37 * result + forbiddenModifiers;
- return result;
- }
-
- public boolean matches(int modifiers) {
- return ((modifiers & requiredModifiers) == requiredModifiers) && ((modifiers & forbiddenModifiers) == 0);
- }
-
- public static ModifiersPattern read(VersionedDataInputStream s) throws IOException {
- int requiredModifiers = s.readShort();
- int forbiddenModifiers = s.readShort();
- if (requiredModifiers == 0 && forbiddenModifiers == 0) {
- return ANY;
- }
- return new ModifiersPattern(requiredModifiers, forbiddenModifiers);
- }
-
- public void write(CompressingDataOutputStream s) throws IOException {
- // s.writeByte(MODIFIERS_PATTERN);
- s.writeShort(requiredModifiers);
- s.writeShort(forbiddenModifiers);
- }
-
- public static int getModifierFlag(String name) {
- Integer flag = modifierFlags.get(name);
- if (flag == null) {
- return -1;
- }
- return flag;
- }
-
- public Object accept(PatternNodeVisitor visitor, Object data) {
- return visitor.visit(this, data);
- }
- }
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