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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 v1.0
- * which accompanies this distribution and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * PARC initial implementation
- * ******************************************************************/
-
- package org.aspectj.weaver.patterns;
-
- import java.io.IOException;
- import java.util.Map;
-
- import org.aspectj.weaver.CompressingDataOutputStream;
- import org.aspectj.weaver.ISourceContext;
- import org.aspectj.weaver.ResolvedType;
- import org.aspectj.weaver.UnresolvedType;
- import org.aspectj.weaver.VersionedDataInputStream;
- import org.aspectj.weaver.World;
-
- public class ThrowsPattern extends PatternNode {
- private TypePatternList required;
- private TypePatternList forbidden;
-
- public static final ThrowsPattern ANY = new ThrowsPattern(TypePatternList.EMPTY, TypePatternList.EMPTY);
-
- public ThrowsPattern(TypePatternList required, TypePatternList forbidden) {
- this.required = required;
- this.forbidden = forbidden;
- }
-
- public TypePatternList getRequired() {
- return required;
- }
-
- public TypePatternList getForbidden() {
- return forbidden;
- }
-
- public String toString() {
- if (this == ANY) {
- return "";
- }
-
- String ret = "throws " + required.toString();
- if (forbidden.size() > 0) {
- ret = ret + " !(" + forbidden.toString() + ")";
- }
- return ret;
- }
-
- public boolean equals(Object other) {
- if (!(other instanceof ThrowsPattern)) {
- return false;
- }
- ThrowsPattern o = (ThrowsPattern) other;
- boolean ret = o.required.equals(this.required) && o.forbidden.equals(this.forbidden);
- return ret;
- }
-
- public int hashCode() {
- int result = 17;
- result = 37 * result + required.hashCode();
- result = 37 * result + forbidden.hashCode();
- return result;
- }
-
- public ThrowsPattern resolveBindings(IScope scope, Bindings bindings) {
- if (this == ANY) {
- return this;
- }
- required = required.resolveBindings(scope, bindings, false, false);
- forbidden = forbidden.resolveBindings(scope, bindings, false, false);
- return this;
- }
-
- public ThrowsPattern parameterizeWith(Map<String,UnresolvedType> typeVariableMap, World w) {
- ThrowsPattern ret = new ThrowsPattern(required.parameterizeWith(typeVariableMap, w), forbidden.parameterizeWith(
- typeVariableMap, w));
- ret.copyLocationFrom(this);
- return ret;
- }
-
- public boolean matches(UnresolvedType[] tys, World world) {
- if (this == ANY) {
- return true;
- }
-
- // System.out.println("matching: " + this + " with " + Arrays.asList(tys));
-
- ResolvedType[] types = world.resolve(tys);
- // int len = types.length;
- for (int j = 0, lenj = required.size(); j < lenj; j++) {
- if (!matchesAny(required.get(j), types)) {
- return false;
- }
- }
- for (int j = 0, lenj = forbidden.size(); j < lenj; j++) {
- if (matchesAny(forbidden.get(j), types)) {
- return false;
- }
- }
- return true;
- }
-
- private boolean matchesAny(TypePattern typePattern, ResolvedType[] types) {
- for (int i = types.length - 1; i >= 0; i--) {
- if (typePattern.matchesStatically(types[i])) {
- return true;
- }
- }
- return false;
- }
-
- public static ThrowsPattern read(VersionedDataInputStream s, ISourceContext context) throws IOException {
- TypePatternList required = TypePatternList.read(s, context);
- TypePatternList forbidden = TypePatternList.read(s, context);
- if (required.size() == 0 && forbidden.size() == 0) {
- return ANY;
- }
- ThrowsPattern ret = new ThrowsPattern(required, forbidden);
- // XXXret.readLocation(context, s);
- return ret;
- }
-
- public void write(CompressingDataOutputStream s) throws IOException {
- required.write(s);
- forbidden.write(s);
- // XXXwriteLocation(s);
- }
-
- public Object accept(PatternNodeVisitor visitor, Object data) {
- return visitor.visit(this, data);
- }
-
- public Object traverse(PatternNodeVisitor visitor, Object data) {
- Object ret = accept(visitor, data);
- forbidden.traverse(visitor, data);
- required.traverse(visitor, data);
- return ret;
- }
- }
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