293 lines
10 KiB
Java
293 lines
10 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 com.sun.tools.classfile.Annotation;
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import com.sun.tools.classfile.TypeAnnotation;
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import com.sun.tools.classfile.Annotation.Annotation_element_value;
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import com.sun.tools.classfile.Annotation.Array_element_value;
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import com.sun.tools.classfile.Annotation.Class_element_value;
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import com.sun.tools.classfile.Annotation.Enum_element_value;
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import com.sun.tools.classfile.Annotation.Primitive_element_value;
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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.Descriptor;
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import com.sun.tools.classfile.Descriptor.InvalidDescriptor;
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/**
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* A writer for writing annotations 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 AnnotationWriter extends BasicWriter {
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static AnnotationWriter instance(Context context) {
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AnnotationWriter instance = context.get(AnnotationWriter.class);
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if (instance == null)
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instance = new AnnotationWriter(context);
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return instance;
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}
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protected AnnotationWriter(Context context) {
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super(context);
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classWriter = ClassWriter.instance(context);
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constantWriter = ConstantWriter.instance(context);
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}
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public void write(Annotation annot) {
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write(annot, false);
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}
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public void write(Annotation annot, boolean resolveIndices) {
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writeDescriptor(annot.type_index, resolveIndices);
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boolean showParens = annot.num_element_value_pairs > 0 || !resolveIndices;
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if (showParens)
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print("(");
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for (int i = 0; i < annot.num_element_value_pairs; i++) {
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if (i > 0)
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print(",");
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write(annot.element_value_pairs[i], resolveIndices);
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}
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if (showParens)
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print(")");
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}
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public void write(TypeAnnotation annot) {
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write(annot, true, false);
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}
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public void write(TypeAnnotation annot, boolean showOffsets, boolean resolveIndices) {
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write(annot.annotation, resolveIndices);
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print(": ");
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write(annot.position, showOffsets);
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}
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public void write(TypeAnnotation.Position pos, boolean showOffsets) {
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print(pos.type);
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switch (pos.type) {
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// instanceof
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case INSTANCEOF:
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// new expression
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case NEW:
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// constructor/method reference receiver
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case CONSTRUCTOR_REFERENCE:
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case METHOD_REFERENCE:
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if (showOffsets) {
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print(", offset=");
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print(pos.offset);
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}
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break;
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// local variable
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case LOCAL_VARIABLE:
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// resource variable
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case RESOURCE_VARIABLE:
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if (pos.lvarOffset == null) {
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print(", lvarOffset is Null!");
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break;
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}
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print(", {");
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for (int i = 0; i < pos.lvarOffset.length; ++i) {
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if (i != 0) print("; ");
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if (showOffsets) {
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print("start_pc=");
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print(pos.lvarOffset[i]);
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}
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print(", length=");
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print(pos.lvarLength[i]);
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print(", index=");
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print(pos.lvarIndex[i]);
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}
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print("}");
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break;
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// exception parameter
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case EXCEPTION_PARAMETER:
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print(", exception_index=");
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print(pos.exception_index);
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break;
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// method receiver
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case METHOD_RECEIVER:
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// Do nothing
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break;
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// type parameter
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case CLASS_TYPE_PARAMETER:
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case METHOD_TYPE_PARAMETER:
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print(", param_index=");
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print(pos.parameter_index);
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break;
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// type parameter bound
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case CLASS_TYPE_PARAMETER_BOUND:
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case METHOD_TYPE_PARAMETER_BOUND:
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print(", param_index=");
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print(pos.parameter_index);
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print(", bound_index=");
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print(pos.bound_index);
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break;
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// class extends or implements clause
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case CLASS_EXTENDS:
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print(", type_index=");
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print(pos.type_index);
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break;
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// throws
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case THROWS:
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print(", type_index=");
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print(pos.type_index);
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break;
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// method parameter
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case METHOD_FORMAL_PARAMETER:
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print(", param_index=");
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print(pos.parameter_index);
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break;
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// type cast
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case CAST:
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// method/constructor/reference type argument
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case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
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case METHOD_INVOCATION_TYPE_ARGUMENT:
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case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
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case METHOD_REFERENCE_TYPE_ARGUMENT:
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if (showOffsets) {
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print(", offset=");
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print(pos.offset);
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}
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print(", type_index=");
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print(pos.type_index);
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break;
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// We don't need to worry about these
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case METHOD_RETURN:
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case FIELD:
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break;
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case UNKNOWN:
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throw new AssertionError("AnnotationWriter: UNKNOWN target type should never occur!");
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default:
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throw new AssertionError("AnnotationWriter: Unknown target type for position: " + pos);
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}
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// Append location data for generics/arrays.
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if (!pos.location.isEmpty()) {
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print(", location=");
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print(pos.location);
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}
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}
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public void write(Annotation.element_value_pair pair) {
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write(pair, false);
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}
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public void write(Annotation.element_value_pair pair, boolean resolveIndices) {
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writeIndex(pair.element_name_index, resolveIndices);
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print("=");
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write(pair.value, resolveIndices);
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}
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public void write(Annotation.element_value value) {
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write(value, false);
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}
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public void write(Annotation.element_value value, boolean resolveIndices) {
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ev_writer.write(value, resolveIndices);
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}
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private void writeDescriptor(int index, boolean resolveIndices) {
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if (resolveIndices) {
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try {
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ConstantPool constant_pool = classWriter.getClassFile().constant_pool;
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Descriptor d = new Descriptor(index);
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print(d.getFieldType(constant_pool));
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return;
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} catch (ConstantPoolException ignore) {
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} catch (InvalidDescriptor ignore) {
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}
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}
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print("#" + index);
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}
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private void writeIndex(int index, boolean resolveIndices) {
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if (resolveIndices) {
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print(constantWriter.stringValue(index));
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} else
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print("#" + index);
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}
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element_value_Writer ev_writer = new element_value_Writer();
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class element_value_Writer implements Annotation.element_value.Visitor<Void,Boolean> {
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public void write(Annotation.element_value value, boolean resolveIndices) {
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value.accept(this, resolveIndices);
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}
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public Void visitPrimitive(Primitive_element_value ev, Boolean resolveIndices) {
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if (resolveIndices)
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writeIndex(ev.const_value_index, resolveIndices);
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else
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print(((char) ev.tag) + "#" + ev.const_value_index);
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return null;
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}
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public Void visitEnum(Enum_element_value ev, Boolean resolveIndices) {
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if (resolveIndices) {
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writeIndex(ev.type_name_index, resolveIndices);
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print(".");
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writeIndex(ev.const_name_index, resolveIndices);
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} else
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print(((char) ev.tag) + "#" + ev.type_name_index + ".#" + ev.const_name_index);
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return null;
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}
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public Void visitClass(Class_element_value ev, Boolean resolveIndices) {
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if (resolveIndices) {
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writeIndex(ev.class_info_index, resolveIndices);
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print(".class");
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} else
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print(((char) ev.tag) + "#" + ev.class_info_index);
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return null;
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}
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public Void visitAnnotation(Annotation_element_value ev, Boolean resolveIndices) {
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print((char) ev.tag);
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AnnotationWriter.this.write(ev.annotation_value, resolveIndices);
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return null;
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}
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public Void visitArray(Array_element_value ev, Boolean resolveIndices) {
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print("[");
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for (int i = 0; i < ev.num_values; i++) {
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if (i > 0)
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print(",");
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write(ev.values[i], resolveIndices);
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}
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print("]");
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return null;
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}
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}
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private ClassWriter classWriter;
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private ConstantWriter constantWriter;
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}
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