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Rework ClassMatcher-s (used for veto) to take on account indirect inh…
…eritance
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223 changes: 223 additions & 0 deletions
223
...late.javaflow.spi/src/main/java/org/apache/commons/javaflow/spi/ClassMatchStrategies.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| /** | ||
| * Copyright 2013-2021 Valery Silaev (http://vsilaev.com) | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.apache.commons.javaflow.spi; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.util.Arrays; | ||
| import java.util.Collection; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
| import java.util.regex.Pattern; | ||
|
|
||
| public final class ClassMatchStrategies { | ||
| private ClassMatchStrategies() {} | ||
|
|
||
| public static final ClassMatchStrategy MATCH_NONE = new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| return false; | ||
| } | ||
|
|
||
| @Override | ||
| public ClassMatcher bind(ResourceLoader ignore) { | ||
| return ClassMatcher.MATCH_NONE; | ||
| } | ||
| }; | ||
|
|
||
| public static final ClassMatchStrategy MATCH_ALL = new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| return true; | ||
| } | ||
|
|
||
| @Override | ||
| public ClassMatcher bind(ResourceLoader ignore) { | ||
| return ClassMatcher.MATCH_ALL; | ||
| } | ||
| }; | ||
|
|
||
| public static ClassMatchStrategy whenAll(ClassMatchStrategy... matchers) { | ||
| return whenAll(Arrays.asList(matchers)); | ||
| } | ||
|
|
||
| public static ClassMatchStrategy whenAll(final Collection<? extends ClassMatchStrategy> matchers) { | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| for (ClassMatchStrategy m : matchers) { | ||
| if (!m.matches(name, signature, superName, interfaces, loader)) { | ||
| return false; | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| public static ClassMatchStrategy whenAny(ClassMatchStrategy... matchers) { | ||
| return whenAny(Arrays.asList(matchers)); | ||
| } | ||
|
|
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| public static ClassMatchStrategy whenAny(final Collection<? extends ClassMatchStrategy> matchers) { | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| for (ClassMatchStrategy m : matchers) { | ||
| if (m.matches(name, signature, superName, interfaces, loader)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| public static ClassMatchStrategy negate(final ClassMatchStrategy matcher) { | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| return !matcher.matches(name, signature, superName, interfaces, loader); | ||
| } | ||
| }; | ||
| } | ||
|
|
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| public static ClassMatchStrategy byClassName(String className, final boolean namePart) { | ||
| final String cn = className(className); | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| return namePart && name.contains(cn) || name.equals(cn); | ||
| } | ||
| }; | ||
| } | ||
|
|
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| public static ClassMatchStrategy byClassNamePattern(final String classNamePattern) { | ||
| final Pattern pattern = Pattern.compile("^" + classNamePattern + "$"); | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| return pattern.matcher(name).matches(); | ||
| } | ||
| }; | ||
| } | ||
|
|
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| public static ClassMatchStrategy bySuperClass(final ClassMatchStrategy nested) { | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| String cname = superName; | ||
| while (null != cname && cname.length() > 0) { | ||
| ClassHeaderReader chr; | ||
| try { | ||
| chr = getClassHeader(loader, cname); | ||
| } catch (IOException ex) { | ||
| throw new RuntimeException(ex); | ||
| } | ||
| String nextSuperName = chr.getSuperName(); | ||
| if (nested.matches(cname, null, nextSuperName, chr.getInterfaces(), loader)) { | ||
| return true; | ||
| } | ||
| cname = nextSuperName; | ||
| } | ||
| return false; | ||
| } | ||
| }; | ||
| } | ||
|
|
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| public static ClassMatchStrategy byInterface(final ClassMatchStrategy nested) { | ||
| return new ClassMatchStrategy() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader) { | ||
| if (null == interfaces || interfaces.length == 0) { | ||
| return false; | ||
| } | ||
| Set<String> visited = new HashSet<String>(); | ||
| for (String intf : interfaces) { | ||
| if (matchInterface(intf, nested, visited, loader)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
| }; | ||
| } | ||
|
|
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| private static boolean matchInterface(String intf, ClassMatchStrategy nested, Set<String> visited, ResourceLoader loader) { | ||
| if (visited.contains(intf)) { | ||
| return false; | ||
| } | ||
| ClassHeaderReader chr; | ||
| try { | ||
| chr = getClassHeader(loader, intf); | ||
| } catch (IOException ex) { | ||
| throw new RuntimeException(ex); | ||
| } | ||
| if (nested.matches(intf, null, chr.getSuperName(), chr.getInterfaces(), loader)) { | ||
| return true; | ||
| } | ||
| visited.add(intf); | ||
| String[] nextInterfaces = chr.getInterfaces(); | ||
| for (String nextInterface : nextInterfaces) { | ||
| if (matchInterface(nextInterface, nested, visited, loader)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
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| private static String className(String internalClassName) { | ||
| return internalClassName != null ? internalClassName.replace('.', '/') : null; | ||
| } | ||
|
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| private static ClassHeaderReader getClassHeader(ResourceLoader loader, String className) throws IOException { | ||
| return new ClassHeaderReader(getClassBytes(loader, className)); | ||
| } | ||
|
|
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| private static byte[] getClassBytes(ResourceLoader loader, String className) throws IOException, SecurityException { | ||
| InputStream in = loader.getResourceAsStream(className + ".class"); | ||
| try { | ||
| return getStreamBytes(in); | ||
| } finally { | ||
| if (null != in) { | ||
| try { | ||
| in.close(); | ||
| } catch (IOException ignore) { | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
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| private static byte[] getStreamBytes(InputStream stream) throws IOException { | ||
| int BUFFER_SIZE = 4096; | ||
| FastByteArrayOutputStream baos = new FastByteArrayOutputStream(BUFFER_SIZE); | ||
| try { | ||
|
|
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| int bytesRead; | ||
| byte[] buffer = new byte[BUFFER_SIZE]; | ||
|
|
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| while ((bytesRead = stream.read(buffer, 0, BUFFER_SIZE)) > 0) { | ||
| baos.write(buffer, 0, bytesRead); | ||
| } | ||
|
|
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| byte[] data = baos.unsafeBytes(); | ||
| return data; | ||
|
|
||
| } finally { | ||
| baos.close(); | ||
| } | ||
| } | ||
| } |
29 changes: 29 additions & 0 deletions
29
...calate.javaflow.spi/src/main/java/org/apache/commons/javaflow/spi/ClassMatchStrategy.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| /** | ||
| * Copyright 2013-2021 Valery Silaev (http://vsilaev.com) | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.apache.commons.javaflow.spi; | ||
|
|
||
| public abstract class ClassMatchStrategy { | ||
| abstract public boolean matches(String name, String signature, String superName, String[] interfaces, ResourceLoader loader); | ||
|
|
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| public ClassMatcher bind(final ResourceLoader loader) { | ||
| return new ClassMatcher() { | ||
| @Override | ||
| public boolean matches(String name, String signature, String superName, String[] interfaces) { | ||
| return ClassMatchStrategy.this.matches(name, signature, superName, interfaces, loader); | ||
| } | ||
| }; | ||
| } | ||
| } |
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