/* * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.tools.javap; import com.sun.tools.classfile.Annotation; import com.sun.tools.classfile.TypeAnnotation; import com.sun.tools.classfile.Annotation.Annotation_element_value; import com.sun.tools.classfile.Annotation.Array_element_value; import com.sun.tools.classfile.Annotation.Class_element_value; import com.sun.tools.classfile.Annotation.Enum_element_value; import com.sun.tools.classfile.Annotation.Primitive_element_value; import com.sun.tools.classfile.ConstantPool; import com.sun.tools.classfile.ConstantPoolException; import com.sun.tools.classfile.Descriptor; import com.sun.tools.classfile.Descriptor.InvalidDescriptor; /** * A writer for writing annotations as text. * *
This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*/
public class AnnotationWriter extends BasicWriter {
static AnnotationWriter instance(Context context) {
AnnotationWriter instance = context.get(AnnotationWriter.class);
if (instance == null)
instance = new AnnotationWriter(context);
return instance;
}
protected AnnotationWriter(Context context) {
super(context);
classWriter = ClassWriter.instance(context);
constantWriter = ConstantWriter.instance(context);
}
public void write(Annotation annot) {
write(annot, false);
}
public void write(Annotation annot, boolean resolveIndices) {
writeDescriptor(annot.type_index, resolveIndices);
boolean showParens = annot.num_element_value_pairs > 0 || !resolveIndices;
if (showParens)
print("(");
for (int i = 0; i < annot.num_element_value_pairs; i++) {
if (i > 0)
print(",");
write(annot.element_value_pairs[i], resolveIndices);
}
if (showParens)
print(")");
}
public void write(TypeAnnotation annot) {
write(annot, true, false);
}
public void write(TypeAnnotation annot, boolean showOffsets, boolean resolveIndices) {
write(annot.annotation, resolveIndices);
print(": ");
write(annot.position, showOffsets);
}
public void write(TypeAnnotation.Position pos, boolean showOffsets) {
print(pos.type);
switch (pos.type) {
// instanceof
case INSTANCEOF:
// new expression
case NEW:
// constructor/method reference receiver
case CONSTRUCTOR_REFERENCE:
case METHOD_REFERENCE:
if (showOffsets) {
print(", offset=");
print(pos.offset);
}
break;
// local variable
case LOCAL_VARIABLE:
// resource variable
case RESOURCE_VARIABLE:
if (pos.lvarOffset == null) {
print(", lvarOffset is Null!");
break;
}
print(", {");
for (int i = 0; i < pos.lvarOffset.length; ++i) {
if (i != 0) print("; ");
if (showOffsets) {
print("start_pc=");
print(pos.lvarOffset[i]);
}
print(", length=");
print(pos.lvarLength[i]);
print(", index=");
print(pos.lvarIndex[i]);
}
print("}");
break;
// exception parameter
case EXCEPTION_PARAMETER:
print(", exception_index=");
print(pos.exception_index);
break;
// method receiver
case METHOD_RECEIVER:
// Do nothing
break;
// type parameter
case CLASS_TYPE_PARAMETER:
case METHOD_TYPE_PARAMETER:
print(", param_index=");
print(pos.parameter_index);
break;
// type parameter bound
case CLASS_TYPE_PARAMETER_BOUND:
case METHOD_TYPE_PARAMETER_BOUND:
print(", param_index=");
print(pos.parameter_index);
print(", bound_index=");
print(pos.bound_index);
break;
// class extends or implements clause
case CLASS_EXTENDS:
print(", type_index=");
print(pos.type_index);
break;
// throws
case THROWS:
print(", type_index=");
print(pos.type_index);
break;
// method parameter
case METHOD_FORMAL_PARAMETER:
print(", param_index=");
print(pos.parameter_index);
break;
// type cast
case CAST:
// method/constructor/reference type argument
case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
case METHOD_INVOCATION_TYPE_ARGUMENT:
case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
case METHOD_REFERENCE_TYPE_ARGUMENT:
if (showOffsets) {
print(", offset=");
print(pos.offset);
}
print(", type_index=");
print(pos.type_index);
break;
// We don't need to worry about these
case METHOD_RETURN:
case FIELD:
break;
case UNKNOWN:
throw new AssertionError("AnnotationWriter: UNKNOWN target type should never occur!");
default:
throw new AssertionError("AnnotationWriter: Unknown target type for position: " + pos);
}
// Append location data for generics/arrays.
if (!pos.location.isEmpty()) {
print(", location=");
print(pos.location);
}
}
public void write(Annotation.element_value_pair pair) {
write(pair, false);
}
public void write(Annotation.element_value_pair pair, boolean resolveIndices) {
writeIndex(pair.element_name_index, resolveIndices);
print("=");
write(pair.value, resolveIndices);
}
public void write(Annotation.element_value value) {
write(value, false);
}
public void write(Annotation.element_value value, boolean resolveIndices) {
ev_writer.write(value, resolveIndices);
}
private void writeDescriptor(int index, boolean resolveIndices) {
if (resolveIndices) {
try {
ConstantPool constant_pool = classWriter.getClassFile().constant_pool;
Descriptor d = new Descriptor(index);
print(d.getFieldType(constant_pool));
return;
} catch (ConstantPoolException | InvalidDescriptor ignore) {
}
}
print("#" + index);
}
private void writeIndex(int index, boolean resolveIndices) {
if (resolveIndices) {
print(constantWriter.stringValue(index));
} else
print("#" + index);
}
element_value_Writer ev_writer = new element_value_Writer();
class element_value_Writer implements Annotation.element_value.Visitor