712 lines
26 KiB
Java
712 lines
26 KiB
Java
/*
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* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.javap;
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import java.util.Formatter;
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import com.sun.tools.classfile.AccessFlags;
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import com.sun.tools.classfile.AnnotationDefault_attribute;
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import com.sun.tools.classfile.Attribute;
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import com.sun.tools.classfile.Attributes;
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import com.sun.tools.classfile.BootstrapMethods_attribute;
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import com.sun.tools.classfile.CharacterRangeTable_attribute;
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import com.sun.tools.classfile.Code_attribute;
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import com.sun.tools.classfile.CompilationID_attribute;
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import com.sun.tools.classfile.ConstantPool;
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import com.sun.tools.classfile.ConstantPoolException;
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import com.sun.tools.classfile.ConstantValue_attribute;
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import com.sun.tools.classfile.DefaultAttribute;
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import com.sun.tools.classfile.Deprecated_attribute;
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import com.sun.tools.classfile.EnclosingMethod_attribute;
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import com.sun.tools.classfile.Exceptions_attribute;
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import com.sun.tools.classfile.InnerClasses_attribute;
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import com.sun.tools.classfile.LineNumberTable_attribute;
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import com.sun.tools.classfile.LocalVariableTable_attribute;
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import com.sun.tools.classfile.LocalVariableTypeTable_attribute;
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import com.sun.tools.classfile.MethodParameters_attribute;
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import com.sun.tools.classfile.RuntimeInvisibleAnnotations_attribute;
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import com.sun.tools.classfile.RuntimeInvisibleParameterAnnotations_attribute;
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import com.sun.tools.classfile.RuntimeInvisibleTypeAnnotations_attribute;
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import com.sun.tools.classfile.RuntimeVisibleAnnotations_attribute;
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import com.sun.tools.classfile.RuntimeVisibleParameterAnnotations_attribute;
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import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;
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import com.sun.tools.classfile.Signature_attribute;
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import com.sun.tools.classfile.SourceDebugExtension_attribute;
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import com.sun.tools.classfile.SourceFile_attribute;
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import com.sun.tools.classfile.SourceID_attribute;
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import com.sun.tools.classfile.StackMapTable_attribute;
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import com.sun.tools.classfile.StackMap_attribute;
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import com.sun.tools.classfile.Synthetic_attribute;
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import static com.sun.tools.classfile.AccessFlags.*;
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import com.sun.tools.javac.util.StringUtils;
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/*
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* A writer for writing Attributes as text.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public class AttributeWriter extends BasicWriter
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implements Attribute.Visitor<Void,Void>
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{
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public static AttributeWriter instance(Context context) {
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AttributeWriter instance = context.get(AttributeWriter.class);
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if (instance == null)
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instance = new AttributeWriter(context);
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return instance;
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}
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protected AttributeWriter(Context context) {
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super(context);
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context.put(AttributeWriter.class, this);
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annotationWriter = AnnotationWriter.instance(context);
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codeWriter = CodeWriter.instance(context);
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constantWriter = ConstantWriter.instance(context);
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options = Options.instance(context);
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}
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public void write(Object owner, Attribute attr, ConstantPool constant_pool) {
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if (attr != null) {
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// null checks
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owner.getClass();
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constant_pool.getClass();
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this.constant_pool = constant_pool;
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this.owner = owner;
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attr.accept(this, null);
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}
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}
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public void write(Object owner, Attributes attrs, ConstantPool constant_pool) {
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if (attrs != null) {
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// null checks
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owner.getClass();
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constant_pool.getClass();
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this.constant_pool = constant_pool;
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this.owner = owner;
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for (Attribute attr: attrs)
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attr.accept(this, null);
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}
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}
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public Void visitDefault(DefaultAttribute attr, Void ignore) {
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if (attr.reason != null) {
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report(attr.reason);
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}
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byte[] data = attr.info;
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int i = 0;
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int j = 0;
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print(" ");
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try {
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print(attr.getName(constant_pool));
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} catch (ConstantPoolException e) {
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report(e);
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print("attribute name = #" + attr.attribute_name_index);
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}
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print(": ");
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println("length = 0x" + toHex(attr.info.length));
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print(" ");
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while (i < data.length) {
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print(toHex(data[i], 2));
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j++;
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if (j == 16) {
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println();
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print(" ");
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j = 0;
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} else {
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print(" ");
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}
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i++;
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}
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println();
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return null;
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}
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public Void visitAnnotationDefault(AnnotationDefault_attribute attr, Void ignore) {
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println("AnnotationDefault:");
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indent(+1);
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print("default_value: ");
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annotationWriter.write(attr.default_value);
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indent(-1);
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return null;
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}
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public Void visitBootstrapMethods(BootstrapMethods_attribute attr, Void p) {
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println(Attribute.BootstrapMethods + ":");
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for (int i = 0; i < attr.bootstrap_method_specifiers.length ; i++) {
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BootstrapMethods_attribute.BootstrapMethodSpecifier bsm = attr.bootstrap_method_specifiers[i];
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indent(+1);
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print(i + ": #" + bsm.bootstrap_method_ref + " ");
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println(constantWriter.stringValue(bsm.bootstrap_method_ref));
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indent(+1);
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println("Method arguments:");
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indent(+1);
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for (int j = 0; j < bsm.bootstrap_arguments.length; j++) {
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print("#" + bsm.bootstrap_arguments[j] + " ");
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println(constantWriter.stringValue(bsm.bootstrap_arguments[j]));
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}
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indent(-3);
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}
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return null;
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}
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public Void visitCharacterRangeTable(CharacterRangeTable_attribute attr, Void ignore) {
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println("CharacterRangeTable:");
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indent(+1);
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for (int i = 0; i < attr.character_range_table.length; i++) {
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CharacterRangeTable_attribute.Entry e = attr.character_range_table[i];
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print(String.format(" %2d, %2d, %6x, %6x, %4x",
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e.start_pc, e.end_pc,
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e.character_range_start, e.character_range_end,
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e.flags));
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tab();
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print(String.format("// %2d, %2d, %4d:%02d, %4d:%02d",
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e.start_pc, e.end_pc,
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(e.character_range_start >> 10), (e.character_range_start & 0x3ff),
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(e.character_range_end >> 10), (e.character_range_end & 0x3ff)));
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if ((e.flags & CharacterRangeTable_attribute.CRT_STATEMENT) != 0)
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print(", statement");
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if ((e.flags & CharacterRangeTable_attribute.CRT_BLOCK) != 0)
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print(", block");
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if ((e.flags & CharacterRangeTable_attribute.CRT_ASSIGNMENT) != 0)
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print(", assignment");
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if ((e.flags & CharacterRangeTable_attribute.CRT_FLOW_CONTROLLER) != 0)
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print(", flow-controller");
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if ((e.flags & CharacterRangeTable_attribute.CRT_FLOW_TARGET) != 0)
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print(", flow-target");
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if ((e.flags & CharacterRangeTable_attribute.CRT_INVOKE) != 0)
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print(", invoke");
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if ((e.flags & CharacterRangeTable_attribute.CRT_CREATE) != 0)
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print(", create");
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if ((e.flags & CharacterRangeTable_attribute.CRT_BRANCH_TRUE) != 0)
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print(", branch-true");
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if ((e.flags & CharacterRangeTable_attribute.CRT_BRANCH_FALSE) != 0)
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print(", branch-false");
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println();
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}
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indent(-1);
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return null;
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}
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public Void visitCode(Code_attribute attr, Void ignore) {
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codeWriter.write(attr, constant_pool);
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return null;
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}
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public Void visitCompilationID(CompilationID_attribute attr, Void ignore) {
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constantWriter.write(attr.compilationID_index);
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return null;
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}
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public Void visitConstantValue(ConstantValue_attribute attr, Void ignore) {
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print("ConstantValue: ");
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constantWriter.write(attr.constantvalue_index);
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println();
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return null;
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}
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public Void visitDeprecated(Deprecated_attribute attr, Void ignore) {
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println("Deprecated: true");
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return null;
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}
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public Void visitEnclosingMethod(EnclosingMethod_attribute attr, Void ignore) {
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print("EnclosingMethod: #" + attr.class_index + ".#" + attr.method_index);
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tab();
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print("// " + getJavaClassName(attr));
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if (attr.method_index != 0)
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print("." + getMethodName(attr));
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println();
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return null;
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}
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private String getJavaClassName(EnclosingMethod_attribute a) {
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try {
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return getJavaName(a.getClassName(constant_pool));
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} catch (ConstantPoolException e) {
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return report(e);
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}
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}
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private String getMethodName(EnclosingMethod_attribute a) {
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try {
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return a.getMethodName(constant_pool);
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} catch (ConstantPoolException e) {
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return report(e);
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}
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}
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public Void visitExceptions(Exceptions_attribute attr, Void ignore) {
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println("Exceptions:");
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indent(+1);
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print("throws ");
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for (int i = 0; i < attr.number_of_exceptions; i++) {
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if (i > 0)
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print(", ");
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print(getJavaException(attr, i));
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}
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println();
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indent(-1);
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return null;
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}
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private String getJavaException(Exceptions_attribute attr, int index) {
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try {
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return getJavaName(attr.getException(index, constant_pool));
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} catch (ConstantPoolException e) {
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return report(e);
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}
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}
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public Void visitInnerClasses(InnerClasses_attribute attr, Void ignore) {
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boolean first = true;
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for (int i = 0 ; i < attr.classes.length; i++) {
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InnerClasses_attribute.Info info = attr.classes[i];
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//access
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AccessFlags access_flags = info.inner_class_access_flags;
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if (options.checkAccess(access_flags)) {
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if (first) {
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writeInnerClassHeader();
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first = false;
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}
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print(" ");
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for (String name: access_flags.getInnerClassModifiers())
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print(name + " ");
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if (info.inner_name_index!=0) {
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print("#" + info.inner_name_index + "= ");
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}
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print("#" + info.inner_class_info_index);
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if (info.outer_class_info_index != 0) {
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print(" of #" + info.outer_class_info_index);
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}
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print("; //");
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if (info.inner_name_index != 0) {
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print(getInnerName(constant_pool, info) + "=");
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}
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constantWriter.write(info.inner_class_info_index);
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if (info.outer_class_info_index != 0) {
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print(" of ");
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constantWriter.write(info.outer_class_info_index);
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}
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println();
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}
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}
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if (!first)
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indent(-1);
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return null;
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}
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String getInnerName(ConstantPool constant_pool, InnerClasses_attribute.Info info) {
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try {
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return info.getInnerName(constant_pool);
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} catch (ConstantPoolException e) {
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return report(e);
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}
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}
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private void writeInnerClassHeader() {
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println("InnerClasses:");
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indent(+1);
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}
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public Void visitLineNumberTable(LineNumberTable_attribute attr, Void ignore) {
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println("LineNumberTable:");
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indent(+1);
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for (LineNumberTable_attribute.Entry entry: attr.line_number_table) {
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println("line " + entry.line_number + ": " + entry.start_pc);
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}
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indent(-1);
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return null;
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}
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public Void visitLocalVariableTable(LocalVariableTable_attribute attr, Void ignore) {
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println("LocalVariableTable:");
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indent(+1);
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println("Start Length Slot Name Signature");
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for (LocalVariableTable_attribute.Entry entry : attr.local_variable_table) {
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println(String.format("%5d %7d %5d %5s %s",
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entry.start_pc, entry.length, entry.index,
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constantWriter.stringValue(entry.name_index),
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constantWriter.stringValue(entry.descriptor_index)));
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}
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indent(-1);
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return null;
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}
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public Void visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, Void ignore) {
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println("LocalVariableTypeTable:");
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indent(+1);
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println("Start Length Slot Name Signature");
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for (LocalVariableTypeTable_attribute.Entry entry : attr.local_variable_table) {
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println(String.format("%5d %7d %5d %5s %s",
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entry.start_pc, entry.length, entry.index,
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constantWriter.stringValue(entry.name_index),
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constantWriter.stringValue(entry.signature_index)));
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}
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indent(-1);
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return null;
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}
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private static final String format = "%-31s%s";
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public Void visitMethodParameters(MethodParameters_attribute attr,
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Void ignore) {
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final String header = String.format(format, "Name", "Flags");
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println("MethodParameters:");
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indent(+1);
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println(header);
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for (MethodParameters_attribute.Entry entry :
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attr.method_parameter_table) {
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String namestr =
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entry.name_index != 0 ?
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constantWriter.stringValue(entry.name_index) : "<no name>";
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String flagstr =
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(0 != (entry.flags & ACC_FINAL) ? "final " : "") +
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(0 != (entry.flags & ACC_MANDATED) ? "mandated " : "") +
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(0 != (entry.flags & ACC_SYNTHETIC) ? "synthetic" : "");
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println(String.format(format, namestr, flagstr));
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}
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indent(-1);
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return null;
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}
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public Void visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, Void ignore) {
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println("RuntimeVisibleAnnotations:");
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indent(+1);
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for (int i = 0; i < attr.annotations.length; i++) {
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print(i + ": ");
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annotationWriter.write(attr.annotations[i]);
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println();
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}
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indent(-1);
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return null;
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}
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public Void visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, Void ignore) {
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println("RuntimeInvisibleAnnotations:");
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indent(+1);
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for (int i = 0; i < attr.annotations.length; i++) {
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print(i + ": ");
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annotationWriter.write(attr.annotations[i]);
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println();
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}
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indent(-1);
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return null;
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}
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public Void visitRuntimeVisibleTypeAnnotations(RuntimeVisibleTypeAnnotations_attribute attr, Void ignore) {
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println("RuntimeVisibleTypeAnnotations:");
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indent(+1);
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for (int i = 0; i < attr.annotations.length; i++) {
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print(i + ": ");
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annotationWriter.write(attr.annotations[i]);
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println();
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}
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indent(-1);
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return null;
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}
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public Void visitRuntimeInvisibleTypeAnnotations(RuntimeInvisibleTypeAnnotations_attribute attr, Void ignore) {
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println("RuntimeInvisibleTypeAnnotations:");
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indent(+1);
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for (int i = 0; i < attr.annotations.length; i++) {
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print(i + ": ");
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annotationWriter.write(attr.annotations[i]);
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println();
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}
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indent(-1);
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return null;
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}
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public Void visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, Void ignore) {
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println("RuntimeVisibleParameterAnnotations:");
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indent(+1);
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for (int param = 0; param < attr.parameter_annotations.length; param++) {
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println("parameter " + param + ": ");
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indent(+1);
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for (int i = 0; i < attr.parameter_annotations[param].length; i++) {
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print(i + ": ");
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annotationWriter.write(attr.parameter_annotations[param][i]);
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println();
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}
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indent(-1);
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}
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indent(-1);
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return null;
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}
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public Void visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, Void ignore) {
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println("RuntimeInvisibleParameterAnnotations:");
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indent(+1);
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for (int param = 0; param < attr.parameter_annotations.length; param++) {
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println(param + ": ");
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indent(+1);
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for (int i = 0; i < attr.parameter_annotations[param].length; i++) {
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print(i + ": ");
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annotationWriter.write(attr.parameter_annotations[param][i]);
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println();
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}
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indent(-1);
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}
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indent(-1);
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return null;
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}
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public Void visitSignature(Signature_attribute attr, Void ignore) {
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print("Signature: #" + attr.signature_index);
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tab();
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println("// " + getSignature(attr));
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return null;
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}
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String getSignature(Signature_attribute info) {
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try {
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return info.getSignature(constant_pool);
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} catch (ConstantPoolException e) {
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return report(e);
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}
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}
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public Void visitSourceDebugExtension(SourceDebugExtension_attribute attr, Void ignore) {
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println("SourceDebugExtension:");
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indent(+1);
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for (String s: attr.getValue().split("[\r\n]+")) {
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println(s);
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}
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indent(-1);
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return null;
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}
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public Void visitSourceFile(SourceFile_attribute attr, Void ignore) {
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println("SourceFile: \"" + getSourceFile(attr) + "\"");
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return null;
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}
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private String getSourceFile(SourceFile_attribute attr) {
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|
try {
|
|
return attr.getSourceFile(constant_pool);
|
|
} catch (ConstantPoolException e) {
|
|
return report(e);
|
|
}
|
|
}
|
|
|
|
public Void visitSourceID(SourceID_attribute attr, Void ignore) {
|
|
constantWriter.write(attr.sourceID_index);
|
|
return null;
|
|
}
|
|
|
|
public Void visitStackMap(StackMap_attribute attr, Void ignore) {
|
|
println("StackMap: number_of_entries = " + attr.number_of_entries);
|
|
indent(+1);
|
|
StackMapTableWriter w = new StackMapTableWriter();
|
|
for (StackMapTable_attribute.stack_map_frame entry : attr.entries) {
|
|
w.write(entry);
|
|
}
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
public Void visitStackMapTable(StackMapTable_attribute attr, Void ignore) {
|
|
println("StackMapTable: number_of_entries = " + attr.number_of_entries);
|
|
indent(+1);
|
|
StackMapTableWriter w = new StackMapTableWriter();
|
|
for (StackMapTable_attribute.stack_map_frame entry : attr.entries) {
|
|
w.write(entry);
|
|
}
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
class StackMapTableWriter // also handles CLDC StackMap attributes
|
|
implements StackMapTable_attribute.stack_map_frame.Visitor<Void,Void> {
|
|
public void write(StackMapTable_attribute.stack_map_frame frame) {
|
|
frame.accept(this, null);
|
|
}
|
|
|
|
public Void visit_same_frame(StackMapTable_attribute.same_frame frame, Void p) {
|
|
printHeader(frame, "/* same */");
|
|
return null;
|
|
}
|
|
|
|
public Void visit_same_locals_1_stack_item_frame(StackMapTable_attribute.same_locals_1_stack_item_frame frame, Void p) {
|
|
printHeader(frame, "/* same_locals_1_stack_item */");
|
|
indent(+1);
|
|
printMap("stack", frame.stack);
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
public Void visit_same_locals_1_stack_item_frame_extended(StackMapTable_attribute.same_locals_1_stack_item_frame_extended frame, Void p) {
|
|
printHeader(frame, "/* same_locals_1_stack_item_frame_extended */");
|
|
indent(+1);
|
|
println("offset_delta = " + frame.offset_delta);
|
|
printMap("stack", frame.stack);
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
public Void visit_chop_frame(StackMapTable_attribute.chop_frame frame, Void p) {
|
|
printHeader(frame, "/* chop */");
|
|
indent(+1);
|
|
println("offset_delta = " + frame.offset_delta);
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
public Void visit_same_frame_extended(StackMapTable_attribute.same_frame_extended frame, Void p) {
|
|
printHeader(frame, "/* same_frame_extended */");
|
|
indent(+1);
|
|
println("offset_delta = " + frame.offset_delta);
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
public Void visit_append_frame(StackMapTable_attribute.append_frame frame, Void p) {
|
|
printHeader(frame, "/* append */");
|
|
indent(+1);
|
|
println("offset_delta = " + frame.offset_delta);
|
|
printMap("locals", frame.locals);
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
public Void visit_full_frame(StackMapTable_attribute.full_frame frame, Void p) {
|
|
if (frame instanceof StackMap_attribute.stack_map_frame) {
|
|
printHeader(frame, "offset = " + frame.offset_delta);
|
|
indent(+1);
|
|
} else {
|
|
printHeader(frame, "/* full_frame */");
|
|
indent(+1);
|
|
println("offset_delta = " + frame.offset_delta);
|
|
}
|
|
printMap("locals", frame.locals);
|
|
printMap("stack", frame.stack);
|
|
indent(-1);
|
|
return null;
|
|
}
|
|
|
|
void printHeader(StackMapTable_attribute.stack_map_frame frame, String extra) {
|
|
print("frame_type = " + frame.frame_type + " ");
|
|
println(extra);
|
|
}
|
|
|
|
void printMap(String name, StackMapTable_attribute.verification_type_info[] map) {
|
|
print(name + " = [");
|
|
for (int i = 0; i < map.length; i++) {
|
|
StackMapTable_attribute.verification_type_info info = map[i];
|
|
int tag = info.tag;
|
|
switch (tag) {
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Object:
|
|
print(" ");
|
|
constantWriter.write(((StackMapTable_attribute.Object_variable_info) info).cpool_index);
|
|
break;
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Uninitialized:
|
|
print(" " + mapTypeName(tag));
|
|
print(" " + ((StackMapTable_attribute.Uninitialized_variable_info) info).offset);
|
|
break;
|
|
default:
|
|
print(" " + mapTypeName(tag));
|
|
}
|
|
print(i == (map.length - 1) ? " " : ",");
|
|
}
|
|
println("]");
|
|
}
|
|
|
|
String mapTypeName(int tag) {
|
|
switch (tag) {
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Top:
|
|
return "top";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Integer:
|
|
return "int";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Float:
|
|
return "float";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Long:
|
|
return "long";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Double:
|
|
return "double";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Null:
|
|
return "null";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_UninitializedThis:
|
|
return "this";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Object:
|
|
return "CP";
|
|
|
|
case StackMapTable_attribute.verification_type_info.ITEM_Uninitialized:
|
|
return "uninitialized";
|
|
|
|
default:
|
|
report("unrecognized verification_type_info tag: " + tag);
|
|
return "[tag:" + tag + "]";
|
|
}
|
|
}
|
|
}
|
|
|
|
public Void visitSynthetic(Synthetic_attribute attr, Void ignore) {
|
|
println("Synthetic: true");
|
|
return null;
|
|
}
|
|
|
|
static String getJavaName(String name) {
|
|
return name.replace('/', '.');
|
|
}
|
|
|
|
String toHex(byte b, int w) {
|
|
return toHex(b & 0xff, w);
|
|
}
|
|
|
|
static String toHex(int i) {
|
|
return StringUtils.toUpperCase(Integer.toString(i, 16));
|
|
}
|
|
|
|
static String toHex(int i, int w) {
|
|
String s = StringUtils.toUpperCase(Integer.toHexString(i));
|
|
while (s.length() < w)
|
|
s = "0" + s;
|
|
return StringUtils.toUpperCase(s);
|
|
}
|
|
|
|
private AnnotationWriter annotationWriter;
|
|
private CodeWriter codeWriter;
|
|
private ConstantWriter constantWriter;
|
|
private Options options;
|
|
|
|
private ConstantPool constant_pool;
|
|
private Object owner;
|
|
}
|