| package org.apache.maven.shared.dependency.analyzer.asm; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.objectweb.asm.AnnotationVisitor; |
| import org.objectweb.asm.Attribute; |
| import org.objectweb.asm.ClassVisitor; |
| import org.objectweb.asm.FieldVisitor; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Type; |
| import org.objectweb.asm.signature.SignatureReader; |
| import org.objectweb.asm.signature.SignatureVisitor; |
| |
| /** |
| * Inspired by <code>org.objectweb.asm.depend.DependencyVisitor</code> in the ASM dependencies example. |
| * |
| * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a> |
| * @version $Id$ |
| */ |
| public class DependencyVisitor |
| implements AnnotationVisitor, SignatureVisitor, ClassVisitor, FieldVisitor, MethodVisitor |
| { |
| // fields ----------------------------------------------------------------- |
| |
| private final Set classes; |
| |
| // constructors ----------------------------------------------------------- |
| |
| public DependencyVisitor() |
| { |
| classes = new HashSet(); |
| } |
| |
| // ClassVisitor methods --------------------------------------------------- |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visit(int, int, java.lang.String, java.lang.String, java.lang.String, |
| * java.lang.String[]) |
| */ |
| public void visit( final int version, final int access, final String name, final String signature, |
| final String superName, final String[] interfaces ) |
| { |
| if ( signature == null ) |
| { |
| addName( superName ); |
| addNames( interfaces ); |
| } |
| else |
| { |
| addSignature( signature ); |
| } |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitSource(java.lang.String, java.lang.String) |
| */ |
| public void visitSource( final String source, final String debug ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitOuterClass(java.lang.String, java.lang.String, java.lang.String) |
| */ |
| public void visitOuterClass( final String owner, final String name, final String desc ) |
| { |
| // addName(owner); |
| // addMethodDesc(desc); |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitAnnotation(java.lang.String, boolean) |
| */ |
| public AnnotationVisitor visitAnnotation( final String desc, final boolean visible ) |
| { |
| addDesc( desc ); |
| |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitAttribute(org.objectweb.asm.Attribute) |
| */ |
| public void visitAttribute( final Attribute attr ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitInnerClass(java.lang.String, java.lang.String, java.lang.String, int) |
| */ |
| public void visitInnerClass( final String name, final String outerName, final String innerName, final int access ) |
| { |
| // addName( outerName); |
| // addName( innerName); |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitField(int, java.lang.String, java.lang.String, java.lang.String, |
| * java.lang.Object) |
| */ |
| public FieldVisitor visitField( final int access, final String name, final String desc, final String signature, |
| final Object value ) |
| { |
| if ( signature == null ) |
| addDesc( desc ); |
| else |
| addTypeSignature( signature ); |
| |
| if ( value instanceof Type ) |
| addType( (Type) value ); |
| |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.ClassVisitor#visitMethod(int, java.lang.String, java.lang.String, java.lang.String, |
| * java.lang.String[]) |
| */ |
| public MethodVisitor visitMethod( final int access, final String name, final String desc, final String signature, |
| final String[] exceptions ) |
| { |
| if ( signature == null ) |
| addMethodDesc( desc ); |
| else |
| addSignature( signature ); |
| |
| addNames( exceptions ); |
| |
| return this; |
| } |
| |
| // MethodVisitor methods -------------------------------------------------- |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitAnnotationDefault() |
| */ |
| public AnnotationVisitor visitAnnotationDefault() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitParameterAnnotation(int, java.lang.String, boolean) |
| */ |
| public AnnotationVisitor visitParameterAnnotation( final int parameter, final String desc, final boolean visible ) |
| { |
| addDesc( desc ); |
| |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitCode() |
| */ |
| public void visitCode() |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitFrame(int, int, java.lang.Object[], int, java.lang.Object[]) |
| */ |
| public void visitFrame( final int type, final int nLocal, final Object[] local, final int nStack, |
| final Object[] stack ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitInsn(int) |
| */ |
| public void visitInsn( final int opcode ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitIntInsn(int, int) |
| */ |
| public void visitIntInsn( final int opcode, final int operand ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitVarInsn(int, int) |
| */ |
| public void visitVarInsn( final int opcode, final int var ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitTypeInsn(int, java.lang.String) |
| */ |
| public void visitTypeInsn( final int opcode, final String desc ) |
| { |
| if ( desc.charAt( 0 ) == '[' ) |
| addDesc( desc ); |
| else |
| addName( desc ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitFieldInsn(int, java.lang.String, java.lang.String, java.lang.String) |
| */ |
| public void visitFieldInsn( final int opcode, final String owner, final String name, final String desc ) |
| { |
| addName( owner ); |
| addDesc( desc ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitMethodInsn(int, java.lang.String, java.lang.String, java.lang.String) |
| */ |
| public void visitMethodInsn( final int opcode, final String owner, final String name, final String desc ) |
| { |
| addName( owner ); |
| addMethodDesc( desc ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitJumpInsn(int, org.objectweb.asm.Label) |
| */ |
| public void visitJumpInsn( final int opcode, final Label label ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitLabel(org.objectweb.asm.Label) |
| */ |
| public void visitLabel( final Label label ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitLdcInsn(java.lang.Object) |
| */ |
| public void visitLdcInsn( final Object cst ) |
| { |
| if ( cst instanceof Type ) |
| addType( (Type) cst ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitIincInsn(int, int) |
| */ |
| public void visitIincInsn( final int var, final int increment ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitTableSwitchInsn(int, int, org.objectweb.asm.Label, |
| * org.objectweb.asm.Label[]) |
| */ |
| public void visitTableSwitchInsn( final int min, final int max, final Label dflt, final Label[] labels ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitLookupSwitchInsn(org.objectweb.asm.Label, int[], |
| * org.objectweb.asm.Label[]) |
| */ |
| public void visitLookupSwitchInsn( final Label dflt, final int[] keys, final Label[] labels ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitMultiANewArrayInsn(java.lang.String, int) |
| */ |
| public void visitMultiANewArrayInsn( final String desc, final int dims ) |
| { |
| addDesc( desc ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitTryCatchBlock(org.objectweb.asm.Label, org.objectweb.asm.Label, |
| * org.objectweb.asm.Label, java.lang.String) |
| */ |
| public void visitTryCatchBlock( final Label start, final Label end, final Label handler, final String type ) |
| { |
| addName( type ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitLocalVariable(java.lang.String, java.lang.String, java.lang.String, |
| * org.objectweb.asm.Label, org.objectweb.asm.Label, int) |
| */ |
| public void visitLocalVariable( final String name, final String desc, final String signature, final Label start, |
| final Label end, final int index ) |
| { |
| if ( signature == null ) |
| { |
| addDesc( desc ); |
| } |
| else |
| { |
| addTypeSignature( signature ); |
| } |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitLineNumber(int, org.objectweb.asm.Label) |
| */ |
| public void visitLineNumber( final int line, final Label start ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.MethodVisitor#visitMaxs(int, int) |
| */ |
| public void visitMaxs( final int maxStack, final int maxLocals ) |
| { |
| // no-op |
| } |
| |
| // AnnotationVisitor methods ---------------------------------------------- |
| |
| /* |
| * @see org.objectweb.asm.AnnotationVisitor#visit(java.lang.String, java.lang.Object) |
| */ |
| public void visit( final String name, final Object value ) |
| { |
| if ( value instanceof Type ) |
| addType( (Type) value ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.AnnotationVisitor#visitEnum(java.lang.String, java.lang.String, java.lang.String) |
| */ |
| public void visitEnum( final String name, final String desc, final String value ) |
| { |
| addDesc( desc ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.AnnotationVisitor#visitAnnotation(java.lang.String, java.lang.String) |
| */ |
| public AnnotationVisitor visitAnnotation( final String name, final String desc ) |
| { |
| addDesc( desc ); |
| |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.AnnotationVisitor#visitArray(java.lang.String) |
| */ |
| public AnnotationVisitor visitArray( final String name ) |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.AnnotationVisitor#visitEnd() |
| */ |
| public void visitEnd() |
| { |
| // no-op |
| } |
| |
| // SignatureVisitor methods ----------------------------------------------- |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitFormalTypeParameter(java.lang.String) |
| */ |
| public void visitFormalTypeParameter( final String name ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitClassBound() |
| */ |
| public SignatureVisitor visitClassBound() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitInterfaceBound() |
| */ |
| public SignatureVisitor visitInterfaceBound() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitSuperclass() |
| */ |
| public SignatureVisitor visitSuperclass() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitInterface() |
| */ |
| public SignatureVisitor visitInterface() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitParameterType() |
| */ |
| public SignatureVisitor visitParameterType() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitReturnType() |
| */ |
| public SignatureVisitor visitReturnType() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitExceptionType() |
| */ |
| public SignatureVisitor visitExceptionType() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitBaseType(char) |
| */ |
| public void visitBaseType( final char descriptor ) |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitTypeVariable(java.lang.String) |
| */ |
| public void visitTypeVariable( final String name ) |
| { |
| // TODO: verify |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitArrayType() |
| */ |
| public SignatureVisitor visitArrayType() |
| { |
| return this; |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitClassType(java.lang.String) |
| */ |
| public void visitClassType( final String name ) |
| { |
| addName( name ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitInnerClassType(java.lang.String) |
| */ |
| public void visitInnerClassType( final String name ) |
| { |
| addName( name ); |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitTypeArgument() |
| */ |
| public void visitTypeArgument() |
| { |
| // no-op |
| } |
| |
| /* |
| * @see org.objectweb.asm.signature.SignatureVisitor#visitTypeArgument(char) |
| */ |
| public SignatureVisitor visitTypeArgument( final char wildcard ) |
| { |
| return this; |
| } |
| |
| // public methods --------------------------------------------------------- |
| |
| public Set getClasses() |
| { |
| return classes; |
| } |
| |
| // private methods -------------------------------------------------------- |
| |
| private void addName( String name ) |
| { |
| if ( name == null ) |
| return; |
| |
| // decode arrays |
| if ( name.startsWith( "[L" ) && name.endsWith( ";" ) ) |
| name = name.substring( 2, name.length() - 1 ); |
| |
| // decode internal representation |
| name = name.replace( '/', '.' ); |
| |
| classes.add( name ); |
| } |
| |
| private void addNames( final String[] names ) |
| { |
| if ( names == null ) |
| return; |
| |
| for ( int i = 0; i < names.length; i++ ) |
| addName( names[i] ); |
| } |
| |
| private void addDesc( final String desc ) |
| { |
| addType( Type.getType( desc ) ); |
| } |
| |
| private void addMethodDesc( final String desc ) |
| { |
| addType( Type.getReturnType( desc ) ); |
| |
| Type[] types = Type.getArgumentTypes( desc ); |
| |
| for ( int i = 0; i < types.length; i++ ) |
| addType( types[i] ); |
| } |
| |
| private void addType( final Type t ) |
| { |
| switch ( t.getSort() ) |
| { |
| case Type.ARRAY: |
| addType( t.getElementType() ); |
| break; |
| |
| case Type.OBJECT: |
| addName( t.getClassName().replace( '.', '/' ) ); |
| break; |
| } |
| } |
| |
| private void addSignature( final String signature ) |
| { |
| if ( signature != null ) |
| new SignatureReader( signature ).accept( this ); |
| } |
| |
| private void addTypeSignature( final String signature ) |
| { |
| if ( signature != null ) |
| new SignatureReader( signature ).acceptType( this ); |
| } |
| } |
