diff options
Diffstat (limited to 'vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/MethodPluginCoverageVisitor.java')
-rw-r--r-- | vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/MethodPluginCoverageVisitor.java | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/MethodPluginCoverageVisitor.java b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/MethodPluginCoverageVisitor.java new file mode 100644 index 000000000..fe15f5e79 --- /dev/null +++ b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/MethodPluginCoverageVisitor.java @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * + * 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 io.fd.hc2vpp.docs.core; + +import static java.lang.String.format; + +import java.util.HashSet; +import java.util.Set; +import org.objectweb.asm.ClassReader; +import org.objectweb.asm.MethodVisitor; +import org.objectweb.asm.Opcodes; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class MethodPluginCoverageVisitor extends MethodVisitor { + + private static final Logger LOG = LoggerFactory.getLogger(MethodPluginCoverageVisitor.class); + + private final String currentClass; + private final Set<PluginMethodReference> foundReferences; + private final String reference; + private final Set<String> allreadyProcessedLocal; + + public MethodPluginCoverageVisitor(String currentClass, Set<PluginMethodReference> foundReferences, + String reference, + Set<String> allreadyProcessedLocal) { + super(Opcodes.ASM5); + this.currentClass = currentClass; + this.foundReferences = foundReferences; + this.reference = reference; + // if nonnull then reuse + this.allreadyProcessedLocal = allreadyProcessedLocal == null + ? new HashSet<>() + : allreadyProcessedLocal; + } + + @Override + public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean isInterface) { + final String normalizedOwner = owner.replace(";", "").replace("[L", ""); + if (normalizedOwner.contains(reference)) { + // reference was found directly in method code + foundReferences.add(new PluginMethodReference(currentClass, owner, name)); + } else { + if (normalizedOwner.contains("io/fd")) { + // filter just our method to reduce scope + if (!normalizedOwner.equals(currentClass)) { + LOG.debug("Processing non-current {}.{}()", normalizedOwner, name); + // method call is from different class than currently processed one + ClassReader classReader = CoverageScanner.loadClass(normalizedOwner); + classReader.accept(new MethodDelegatingClassVisitor(normalizedOwner, name, reference, + foundReferences, + allreadyProcessedLocal), ClassReader.SKIP_DEBUG); + } else { + LOG.debug("Processing current {}.{}()", normalizedOwner, name); + // other methods in same class that are used in visited method + String fullyQualifiedMethodName = fullyQualifiedMethodName(normalizedOwner, name, desc); + if (allreadyProcessedLocal.contains(fullyQualifiedMethodName)) { + //skip already processed local methods to prevent stack overflow + return; + } + allreadyProcessedLocal.add(fullyQualifiedMethodName); + + ClassReader classReader = CoverageScanner.loadClass(normalizedOwner); + classReader.accept(new MethodDelegatingClassVisitor(normalizedOwner, name, reference, + foundReferences, + allreadyProcessedLocal), ClassReader.SKIP_DEBUG); + } + } + } + super.visitMethodInsn(opcode, owner, name, desc, isInterface); + } + + private String fullyQualifiedMethodName(String owner, String name, String desc) { + return format("%s_%s_%s", owner, name, desc); + } +} |