diff options
Diffstat (limited to 'org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/nd/java/NdMethodId.java')
| -rw-r--r-- | org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/nd/java/NdMethodId.java | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/nd/java/NdMethodId.java b/org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/nd/java/NdMethodId.java new file mode 100644 index 000000000..f554b8003 --- /dev/null +++ b/org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/nd/java/NdMethodId.java @@ -0,0 +1,107 @@ +/******************************************************************************* + * Copyright (c) 2015, 2016 Google, Inc and others. + * 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: + * Stefan Xenos (Google) - Initial implementation + *******************************************************************************/ +package org.eclipse.jdt.internal.core.nd.java; + +import java.util.List; + +import org.eclipse.jdt.internal.core.nd.Nd; +import org.eclipse.jdt.internal.core.nd.NdNode; +import org.eclipse.jdt.internal.core.nd.db.IString; +import org.eclipse.jdt.internal.core.nd.field.FieldOneToMany; +import org.eclipse.jdt.internal.core.nd.field.FieldSearchKey; +import org.eclipse.jdt.internal.core.nd.field.StructDef; +import org.eclipse.jdt.internal.core.nd.util.CharArrayUtils; + +/** + * Represents the fully-qualified signature a method. Holds back-pointers to all the entities that refer to the name, + * along with pointers to all methods that have this fully-qualified name. Note that this isn't the class declaration + * itself. If there are multiple jar files containing a class of the same fully-qualified name, there may also be + * multiple methods with the same method ID. + */ +public class NdMethodId extends NdNode { + public static final FieldSearchKey<JavaIndex> METHOD_NAME; + public static final FieldOneToMany<NdMethod> METHODS; + public static final FieldOneToMany<NdType> DECLARED_TYPES; + + @SuppressWarnings("hiding") + public static final StructDef<NdMethodId> type; + + static { + type = StructDef.create(NdMethodId.class, NdNode.type); + METHOD_NAME = FieldSearchKey.create(type, JavaIndex.METHODS); + METHODS = FieldOneToMany.create(type, NdMethod.METHOD_ID, 2); + DECLARED_TYPES = FieldOneToMany.create(type, NdType.DECLARING_METHOD); + + type.useStandardRefCounting().done(); + } + + public NdMethodId(Nd nd, long address) { + super(nd, address); + } + + /** + * + * @param nd + * @param methodIdentifier a field descriptor for the method type followed by a "#" followed by a method selector + * followed by method descriptor. For example, "Lorg/eclipse/MyClass#foo()Ljava/lang/Object;V" + */ + public NdMethodId(Nd nd, char[] methodIdentifier) { + super(nd); + + METHOD_NAME.put(nd, this.address, methodIdentifier); + } + + public List<NdType> getDeclaredTypes() { + return DECLARED_TYPES.asList(getNd(), this.address); + } + + /** + * Returns the field descriptor for the type (without a trailing ';') followed by a # followed by the method + * selector followed by the method descriptor. For example, "Lorg/eclipse/MyClass#foo()Ljava/lang/Object;V" + */ + public IString getMethodName() { + return METHOD_NAME.get(getNd(), this.address); + } + + public char[] getSelector() { + char[] name = getMethodName().getChars(); + int selectorStart = CharArrayUtils.indexOf('#', name) + 1; + int selectorEnd = CharArrayUtils.indexOf('(', name, selectorStart, name.length); + if (selectorEnd == -1) { + selectorEnd = name.length; + } + return CharArrayUtils.subarray(name, selectorStart, selectorEnd); + } + + public boolean isConstructor() { + return JavaNames.isConstructor(getSelector()); + } + + public char[] getMethodDescriptor() { + char[] name = getMethodName().getChars(); + int descriptorStart = CharArrayUtils.indexOf('(', name, 0, name.length); + return CharArrayUtils.subarray(name, descriptorStart, name.length); + } + + public boolean isClInit() { + return JavaNames.isClinit(getSelector()); + } + + public String toString() { + try { + return new String(getSelector()); + } catch (RuntimeException e) { + // This is called most often from the debugger, so we want to return something meaningful even + // if the code is buggy, the database is corrupt, or we don't have a read lock. + return super.toString(); + } + } +} |