1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/classfile/ClassWriter.java Tue Jun 03 13:26:47 2008 -0700
1.3 @@ -0,0 +1,689 @@
1.4 +/*
1.5 + * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Sun designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Sun in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.25 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.26 + * have any questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.classfile;
1.30 +
1.31 +import java.io.ByteArrayOutputStream;
1.32 +import java.io.DataOutputStream;
1.33 +import java.io.File;
1.34 +import java.io.FileOutputStream;
1.35 +import java.io.IOException;
1.36 +import java.io.OutputStream;
1.37 +
1.38 +import static com.sun.tools.classfile.Annotation.*;
1.39 +import static com.sun.tools.classfile.ConstantPool.*;
1.40 +import static com.sun.tools.classfile.StackMapTable_attribute.*;
1.41 +import static com.sun.tools.classfile.StackMapTable_attribute.verification_type_info.*;
1.42 +
1.43 +/**
1.44 + * Write a ClassFile data structure to a file or stream.
1.45 + *
1.46 + * <p><b>This is NOT part of any API supported by Sun Microsystems. If
1.47 + * you write code that depends on this, you do so at your own risk.
1.48 + * This code and its internal interfaces are subject to change or
1.49 + * deletion without notice.</b>
1.50 + */
1.51 +public class ClassWriter {
1.52 + public ClassWriter() {
1.53 + attributeWriter = new AttributeWriter();
1.54 + constantPoolWriter = new ConstantPoolWriter();
1.55 + out = new ClassOutputStream();
1.56 + }
1.57 +
1.58 + /**
1.59 + * Write a ClassFile data structure to a file.
1.60 + */
1.61 + public void write(ClassFile classFile, File f) throws IOException {
1.62 + FileOutputStream f_out = new FileOutputStream(f);
1.63 + try {
1.64 + write(classFile, f_out);
1.65 + } finally {
1.66 + f_out.close();
1.67 + }
1.68 + }
1.69 +
1.70 + /**
1.71 + * Write a ClassFile data structure to a stream.
1.72 + */
1.73 + public void write(ClassFile classFile, OutputStream s) throws IOException {
1.74 + this.classFile = classFile;
1.75 + out.reset();
1.76 + write();
1.77 + out.writeTo(s);
1.78 + }
1.79 +
1.80 + protected void write() throws IOException {
1.81 + writeHeader();
1.82 + writeConstantPool();
1.83 + writeAccessFlags(classFile.access_flags);
1.84 + writeClassInfo();
1.85 + writeFields();
1.86 + writeMethods();
1.87 + writeAttributes(classFile.attributes);
1.88 + }
1.89 +
1.90 + protected void writeHeader() {
1.91 + out.writeInt(classFile.magic);
1.92 + out.writeShort(classFile.minor_version);
1.93 + out.writeShort(classFile.major_version);
1.94 + }
1.95 +
1.96 + protected void writeAccessFlags(AccessFlags flags) {
1.97 + out.writeShort(flags.flags);
1.98 + }
1.99 +
1.100 + protected void writeAttributes(Attributes attributes) {
1.101 + int size = attributes.size();
1.102 + out.writeShort(size);
1.103 + for (Attribute attr: attributes)
1.104 + attributeWriter.write(attr, out);
1.105 + }
1.106 +
1.107 + protected void writeClassInfo() {
1.108 + out.writeShort(classFile.this_class);
1.109 + out.writeShort(classFile.super_class);
1.110 + int[] interfaces = classFile.interfaces;
1.111 + out.writeShort(interfaces.length);
1.112 + for (int i: interfaces)
1.113 + out.writeShort(i);
1.114 + }
1.115 +
1.116 + protected void writeDescriptor(Descriptor d) {
1.117 + out.writeShort(d.index);
1.118 + }
1.119 +
1.120 + protected void writeConstantPool() {
1.121 + ConstantPool pool = classFile.constant_pool;
1.122 + int size = pool.size();
1.123 + out.writeShort(size);
1.124 + try {
1.125 + for (int i = 1; i < size; ) {
1.126 + i += constantPoolWriter.write(pool.get(i), out);
1.127 + }
1.128 + } catch (ConstantPoolException e) {
1.129 + throw new Error(e); // ??
1.130 + }
1.131 + }
1.132 +
1.133 + protected void writeFields() throws IOException {
1.134 + Field[] fields = classFile.fields;
1.135 + out.writeShort(fields.length);
1.136 + for (Field f: fields)
1.137 + writeField(f);
1.138 + }
1.139 +
1.140 + protected void writeField(Field f) throws IOException {
1.141 + writeAccessFlags(f.access_flags);
1.142 + out.writeShort(f.name_index);
1.143 + writeDescriptor(f.descriptor);
1.144 + writeAttributes(f.attributes);
1.145 + }
1.146 +
1.147 + protected void writeMethods() throws IOException {
1.148 + Method[] methods = classFile.methods;
1.149 + out.writeShort(methods.length);
1.150 + for (Method m: methods) {
1.151 + writeMethod(m);
1.152 + }
1.153 + }
1.154 +
1.155 + protected void writeMethod(Method m) throws IOException {
1.156 + writeAccessFlags(m.access_flags);
1.157 + out.writeShort(m.name_index);
1.158 + writeDescriptor(m.descriptor);
1.159 + writeAttributes(m.attributes);
1.160 + }
1.161 +
1.162 + protected ClassFile classFile;
1.163 + protected ClassOutputStream out;
1.164 + protected AttributeWriter attributeWriter;
1.165 + protected ConstantPoolWriter constantPoolWriter;
1.166 +
1.167 + /**
1.168 + * Subtype of ByteArrayOutputStream with the convenience methods of
1.169 + * a DataOutputStream. Since ByteArrayOutputStream does not throw
1.170 + * IOException, there are no exceptions from the additional
1.171 + * convenience methods either,
1.172 + */
1.173 + protected static class ClassOutputStream extends ByteArrayOutputStream {
1.174 + public ClassOutputStream() {
1.175 + d = new DataOutputStream(this);
1.176 + }
1.177 +
1.178 + public void writeByte(int value) {
1.179 + try {
1.180 + d.writeByte(value);
1.181 + } catch (IOException ignore) {
1.182 + }
1.183 + }
1.184 +
1.185 + public void writeShort(int value) {
1.186 + try {
1.187 + d.writeShort(value);
1.188 + } catch (IOException ignore) {
1.189 + }
1.190 + }
1.191 +
1.192 + public void writeInt(int value) {
1.193 + try {
1.194 + d.writeInt(value);
1.195 + } catch (IOException ignore) {
1.196 + }
1.197 + }
1.198 +
1.199 + public void writeLong(long value) {
1.200 + try {
1.201 + d.writeLong(value);
1.202 + } catch (IOException ignore) {
1.203 + }
1.204 + }
1.205 +
1.206 + public void writeFloat(float value) {
1.207 + try {
1.208 + d.writeFloat(value);
1.209 + } catch (IOException ignore) {
1.210 + }
1.211 + }
1.212 +
1.213 + public void writeDouble(double value) {
1.214 + try {
1.215 + d.writeDouble(value);
1.216 + } catch (IOException ignore) {
1.217 + }
1.218 + }
1.219 +
1.220 + public void writeUTF(String value) {
1.221 + try {
1.222 + d.writeUTF(value);
1.223 + } catch (IOException ignore) {
1.224 + }
1.225 + }
1.226 +
1.227 + public void writeTo(ClassOutputStream s) {
1.228 + try {
1.229 + super.writeTo(s);
1.230 + } catch (IOException ignore) {
1.231 + }
1.232 + }
1.233 +
1.234 + private DataOutputStream d;
1.235 + }
1.236 +
1.237 + /**
1.238 + * Writer for the entries in the constant pool.
1.239 + */
1.240 + protected static class ConstantPoolWriter
1.241 + implements ConstantPool.Visitor<Integer,ClassOutputStream> {
1.242 + protected int write(CPInfo info, ClassOutputStream out) {
1.243 + out.writeByte(info.getTag());
1.244 + return info.accept(this, out);
1.245 + }
1.246 +
1.247 + public Integer visitClass(CONSTANT_Class_info info, ClassOutputStream out) {
1.248 + out.writeShort(info.name_index);
1.249 + return 1;
1.250 + }
1.251 +
1.252 + public Integer visitDouble(CONSTANT_Double_info info, ClassOutputStream out) {
1.253 + out.writeDouble(info.value);
1.254 + return 2;
1.255 + }
1.256 +
1.257 + public Integer visitFieldref(CONSTANT_Fieldref_info info, ClassOutputStream out) {
1.258 + writeRef(info, out);
1.259 + return 1;
1.260 + }
1.261 +
1.262 + public Integer visitFloat(CONSTANT_Float_info info, ClassOutputStream out) {
1.263 + out.writeFloat(info.value);
1.264 + return 1;
1.265 + }
1.266 +
1.267 + public Integer visitInteger(CONSTANT_Integer_info info, ClassOutputStream out) {
1.268 + out.writeInt(info.value);
1.269 + return 1;
1.270 + }
1.271 +
1.272 + public Integer visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, ClassOutputStream out) {
1.273 + writeRef(info, out);
1.274 + return 1;
1.275 + }
1.276 +
1.277 + public Integer visitLong(CONSTANT_Long_info info, ClassOutputStream out) {
1.278 + out.writeLong(info.value);
1.279 + return 2;
1.280 + }
1.281 +
1.282 + public Integer visitNameAndType(CONSTANT_NameAndType_info info, ClassOutputStream out) {
1.283 + out.writeShort(info.name_index);
1.284 + out.writeShort(info.type_index);
1.285 + return 1;
1.286 + }
1.287 +
1.288 + public Integer visitMethodref(CONSTANT_Methodref_info info, ClassOutputStream out) {
1.289 + return writeRef(info, out);
1.290 + }
1.291 +
1.292 + public Integer visitString(CONSTANT_String_info info, ClassOutputStream out) {
1.293 + out.writeShort(info.string_index);
1.294 + return 1;
1.295 + }
1.296 +
1.297 + public Integer visitUtf8(CONSTANT_Utf8_info info, ClassOutputStream out) {
1.298 + out.writeUTF(info.value);
1.299 + return 1;
1.300 + }
1.301 +
1.302 + protected Integer writeRef(CPRefInfo info, ClassOutputStream out) {
1.303 + out.writeShort(info.class_index);
1.304 + out.writeShort(info.name_and_type_index);
1.305 + return 1;
1.306 + }
1.307 + }
1.308 +
1.309 + /**
1.310 + * Writer for the different types of attribute.
1.311 + */
1.312 + protected static class AttributeWriter implements Attribute.Visitor<Void,ClassOutputStream> {
1.313 + public void write(Attributes attributes, ClassOutputStream out) {
1.314 + int size = attributes.size();
1.315 + out.writeShort(size);
1.316 + for (Attribute a: attributes)
1.317 + write(a, out);
1.318 + }
1.319 +
1.320 + // Note: due to the use of shared resources, this method is not reentrant.
1.321 + public void write(Attribute attr, ClassOutputStream out) {
1.322 + out.writeShort(attr.attribute_name_index);
1.323 + sharedOut.reset();
1.324 + attr.accept(this, sharedOut);
1.325 + out.writeInt(sharedOut.size());
1.326 + sharedOut.writeTo(out);
1.327 + }
1.328 +
1.329 + protected ClassOutputStream sharedOut = new ClassOutputStream();
1.330 + protected AnnotationWriter annotationWriter = new AnnotationWriter();
1.331 +
1.332 + public Void visitDefault(DefaultAttribute attr, ClassOutputStream out) {
1.333 + out.write(attr.info, 0, attr.info.length);
1.334 + return null;
1.335 + }
1.336 +
1.337 + public Void visitAnnotationDefault(AnnotationDefault_attribute attr, ClassOutputStream out) {
1.338 + annotationWriter.write(attr.default_value, out);
1.339 + return null;
1.340 + }
1.341 +
1.342 + public Void visitCharacterRangeTable(CharacterRangeTable_attribute attr, ClassOutputStream out) {
1.343 + out.writeShort(attr.character_range_table.length);
1.344 + for (CharacterRangeTable_attribute.Entry e: attr.character_range_table)
1.345 + writeCharacterRangeTableEntry(e, out);
1.346 + return null;
1.347 + }
1.348 +
1.349 + protected void writeCharacterRangeTableEntry(CharacterRangeTable_attribute.Entry entry, ClassOutputStream out) {
1.350 + out.writeShort(entry.start_pc);
1.351 + out.writeShort(entry.end_pc);
1.352 + out.writeInt(entry.character_range_start);
1.353 + out.writeInt(entry.character_range_end);
1.354 + out.writeShort(entry.flags);
1.355 + }
1.356 +
1.357 + public Void visitCode(Code_attribute attr, ClassOutputStream out) {
1.358 + out.writeShort(attr.max_stack);
1.359 + out.writeShort(attr.max_locals);
1.360 + out.writeInt(attr.code.length);
1.361 + out.write(attr.code, 0, attr.code.length);
1.362 + out.writeShort(attr.exception_table.length);
1.363 + for (Code_attribute.Exception_data e: attr.exception_table)
1.364 + writeExceptionTableEntry(e, out);
1.365 + new AttributeWriter().write(attr.attributes, out);
1.366 + return null;
1.367 + }
1.368 +
1.369 + protected void writeExceptionTableEntry(Code_attribute.Exception_data exception_data, ClassOutputStream out) {
1.370 + out.writeShort(exception_data.start_pc);
1.371 + out.writeShort(exception_data.end_pc);
1.372 + out.writeShort(exception_data.handler_pc);
1.373 + out.writeShort(exception_data.catch_type);
1.374 + }
1.375 +
1.376 + public Void visitCompilationID(CompilationID_attribute attr, ClassOutputStream out) {
1.377 + out.writeShort(attr.compilationID_index);
1.378 + return null;
1.379 + }
1.380 +
1.381 + public Void visitConstantValue(ConstantValue_attribute attr, ClassOutputStream out) {
1.382 + out.writeShort(attr.constantvalue_index);
1.383 + return null;
1.384 + }
1.385 +
1.386 + public Void visitDeprecated(Deprecated_attribute attr, ClassOutputStream out) {
1.387 + return null;
1.388 + }
1.389 +
1.390 + public Void visitEnclosingMethod(EnclosingMethod_attribute attr, ClassOutputStream out) {
1.391 + out.writeShort(attr.class_index);
1.392 + out.writeShort(attr.method_index);
1.393 + return null;
1.394 + }
1.395 +
1.396 + public Void visitExceptions(Exceptions_attribute attr, ClassOutputStream out) {
1.397 + out.writeShort(attr.exception_index_table.length);
1.398 + for (int i: attr.exception_index_table)
1.399 + out.writeShort(i);
1.400 + return null;
1.401 + }
1.402 +
1.403 + public Void visitInnerClasses(InnerClasses_attribute attr, ClassOutputStream out) {
1.404 + out.writeShort(attr.classes.length);
1.405 + for (InnerClasses_attribute.Info info: attr.classes)
1.406 + writeInnerClassesInfo(info, out);
1.407 + return null;
1.408 + }
1.409 +
1.410 + protected void writeInnerClassesInfo(InnerClasses_attribute.Info info, ClassOutputStream out) {
1.411 + out.writeShort(info.inner_class_info_index);
1.412 + out.writeShort(info.outer_class_info_index);
1.413 + out.writeShort(info.inner_name_index);
1.414 + writeAccessFlags(info.inner_class_access_flags, out);
1.415 + }
1.416 +
1.417 + public Void visitLineNumberTable(LineNumberTable_attribute attr, ClassOutputStream out) {
1.418 + out.writeShort(attr.line_number_table.length);
1.419 + for (LineNumberTable_attribute.Entry e: attr.line_number_table)
1.420 + writeLineNumberTableEntry(e, out);
1.421 + return null;
1.422 + }
1.423 +
1.424 + protected void writeLineNumberTableEntry(LineNumberTable_attribute.Entry entry, ClassOutputStream out) {
1.425 + out.writeShort(entry.start_pc);
1.426 + out.writeShort(entry.line_number);
1.427 + }
1.428 +
1.429 + public Void visitLocalVariableTable(LocalVariableTable_attribute attr, ClassOutputStream out) {
1.430 + out.writeShort(attr.local_variable_table.length);
1.431 + for (LocalVariableTable_attribute.Entry e: attr.local_variable_table)
1.432 + writeLocalVariableTableEntry(e, out);
1.433 + return null;
1.434 + }
1.435 +
1.436 + protected void writeLocalVariableTableEntry(LocalVariableTable_attribute.Entry entry, ClassOutputStream out) {
1.437 + out.writeShort(entry.start_pc);
1.438 + out.writeShort(entry.length);
1.439 + out.writeShort(entry.name_index);
1.440 + out.writeShort(entry.descriptor_index);
1.441 + out.writeShort(entry.index);
1.442 + }
1.443 +
1.444 + public Void visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, ClassOutputStream out) {
1.445 + out.writeByte(attr.local_variable_table.length);
1.446 + for (LocalVariableTypeTable_attribute.Entry e: attr.local_variable_table)
1.447 + writeLocalVariableTypeTableEntry(e, out);
1.448 + return null;
1.449 + }
1.450 +
1.451 + protected void writeLocalVariableTypeTableEntry(LocalVariableTypeTable_attribute.Entry entry, ClassOutputStream out) {
1.452 + out.writeShort(entry.start_pc);
1.453 + out.writeShort(entry.length);
1.454 + out.writeShort(entry.name_index);
1.455 + out.writeShort(entry.signature_index);
1.456 + out.writeShort(entry.index);
1.457 + }
1.458 +
1.459 + public Void visitModule(Module_attribute attr, ClassOutputStream out) {
1.460 + out.writeShort(attr.module_name);
1.461 + return null;
1.462 + }
1.463 +
1.464 + public Void visitModuleExportTable(ModuleExportTable_attribute attr, ClassOutputStream out) {
1.465 + out.writeShort(attr.export_type_table.length);
1.466 + for (int i: attr.export_type_table)
1.467 + out.writeShort(i);
1.468 + return null;
1.469 + }
1.470 +
1.471 + public Void visitModuleMemberTable(ModuleMemberTable_attribute attr, ClassOutputStream out) {
1.472 + out.writeShort(attr.package_member_table.length);
1.473 + for (int i: attr.package_member_table)
1.474 + out.writeShort(i);
1.475 + return null;
1.476 + }
1.477 +
1.478 + public Void visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, ClassOutputStream out) {
1.479 + annotationWriter.write(attr.annotations, out);
1.480 + return null;
1.481 + }
1.482 +
1.483 + public Void visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, ClassOutputStream out) {
1.484 + annotationWriter.write(attr.annotations, out);
1.485 + return null;
1.486 + }
1.487 +
1.488 + public Void visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, ClassOutputStream out) {
1.489 + out.writeByte(attr.parameter_annotations.length);
1.490 + for (Annotation[] annos: attr.parameter_annotations)
1.491 + annotationWriter.write(annos, out);
1.492 + return null;
1.493 + }
1.494 +
1.495 + public Void visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, ClassOutputStream out) {
1.496 + out.writeByte(attr.parameter_annotations.length);
1.497 + for (Annotation[] annos: attr.parameter_annotations)
1.498 + annotationWriter.write(annos, out);
1.499 + return null;
1.500 + }
1.501 +
1.502 + public Void visitSignature(Signature_attribute attr, ClassOutputStream out) {
1.503 + out.writeShort(attr.signature_index);
1.504 + return null;
1.505 + }
1.506 +
1.507 + public Void visitSourceDebugExtension(SourceDebugExtension_attribute attr, ClassOutputStream out) {
1.508 + out.write(attr.debug_extension, 0, attr.debug_extension.length);
1.509 + return null;
1.510 + }
1.511 +
1.512 + public Void visitSourceFile(SourceFile_attribute attr, ClassOutputStream out) {
1.513 + out.writeShort(attr.sourcefile_index);
1.514 + return null;
1.515 + }
1.516 +
1.517 + public Void visitSourceID(SourceID_attribute attr, ClassOutputStream out) {
1.518 + out.writeShort(attr.sourceID_index);
1.519 + return null;
1.520 + }
1.521 +
1.522 + public Void visitStackMap(StackMap_attribute attr, ClassOutputStream out) {
1.523 + if (stackMapWriter == null)
1.524 + stackMapWriter = new StackMapTableWriter();
1.525 +
1.526 + out.writeShort(attr.entries.length);
1.527 + for (stack_map_frame f: attr.entries)
1.528 + stackMapWriter.write(f, out);
1.529 + return null;
1.530 + }
1.531 +
1.532 + public Void visitStackMapTable(StackMapTable_attribute attr, ClassOutputStream out) {
1.533 + if (stackMapWriter == null)
1.534 + stackMapWriter = new StackMapTableWriter();
1.535 +
1.536 + out.writeShort(attr.entries.length);
1.537 + for (stack_map_frame f: attr.entries)
1.538 + stackMapWriter.write(f, out);
1.539 + return null;
1.540 + }
1.541 +
1.542 + public Void visitSynthetic(Synthetic_attribute attr, ClassOutputStream out) {
1.543 + return null;
1.544 + }
1.545 +
1.546 + protected void writeAccessFlags(AccessFlags flags, ClassOutputStream p) {
1.547 + sharedOut.writeShort(flags.flags);
1.548 + }
1.549 +
1.550 + protected StackMapTableWriter stackMapWriter;
1.551 + }
1.552 +
1.553 + /**
1.554 + * Writer for the frames of StackMap and StackMapTable attributes.
1.555 + */
1.556 + protected static class StackMapTableWriter
1.557 + implements stack_map_frame.Visitor<Void,ClassOutputStream> {
1.558 +
1.559 + public void write(stack_map_frame frame, ClassOutputStream out) {
1.560 + out.write(frame.frame_type);
1.561 + frame.accept(this, out);
1.562 + }
1.563 +
1.564 + public Void visit_same_frame(same_frame frame, ClassOutputStream p) {
1.565 + return null;
1.566 + }
1.567 +
1.568 + public Void visit_same_locals_1_stack_item_frame(same_locals_1_stack_item_frame frame, ClassOutputStream out) {
1.569 + writeVerificationTypeInfo(frame.stack[0], out);
1.570 + return null;
1.571 + }
1.572 +
1.573 + public Void visit_same_locals_1_stack_item_frame_extended(same_locals_1_stack_item_frame_extended frame, ClassOutputStream out) {
1.574 + out.writeShort(frame.offset_delta);
1.575 + writeVerificationTypeInfo(frame.stack[0], out);
1.576 + return null;
1.577 + }
1.578 +
1.579 + public Void visit_chop_frame(chop_frame frame, ClassOutputStream out) {
1.580 + out.writeShort(frame.offset_delta);
1.581 + return null;
1.582 + }
1.583 +
1.584 + public Void visit_same_frame_extended(same_frame_extended frame, ClassOutputStream out) {
1.585 + out.writeShort(frame.offset_delta);
1.586 + return null;
1.587 + }
1.588 +
1.589 + public Void visit_append_frame(append_frame frame, ClassOutputStream out) {
1.590 + out.writeShort(frame.offset_delta);
1.591 + for (verification_type_info l: frame.locals)
1.592 + writeVerificationTypeInfo(l, out);
1.593 + return null;
1.594 + }
1.595 +
1.596 + public Void visit_full_frame(full_frame frame, ClassOutputStream out) {
1.597 + out.writeShort(frame.offset_delta);
1.598 + out.writeShort(frame.locals.length);
1.599 + for (verification_type_info l: frame.locals)
1.600 + writeVerificationTypeInfo(l, out);
1.601 + out.writeShort(frame.stack.length);
1.602 + for (verification_type_info s: frame.stack)
1.603 + writeVerificationTypeInfo(s, out);
1.604 + return null;
1.605 + }
1.606 +
1.607 + protected void writeVerificationTypeInfo(verification_type_info info,
1.608 + ClassOutputStream out) {
1.609 + out.write(info.tag);
1.610 + switch (info.tag) {
1.611 + case ITEM_Top:
1.612 + case ITEM_Integer:
1.613 + case ITEM_Float:
1.614 + case ITEM_Long:
1.615 + case ITEM_Double:
1.616 + case ITEM_Null:
1.617 + case ITEM_UninitializedThis:
1.618 + break;
1.619 +
1.620 + case ITEM_Object:
1.621 + Object_variable_info o = (Object_variable_info) info;
1.622 + out.writeShort(o.cpool_index);
1.623 + break;
1.624 +
1.625 + case ITEM_Uninitialized:
1.626 + Uninitialized_variable_info u = (Uninitialized_variable_info) info;
1.627 + out.writeShort(u.offset);
1.628 + break;
1.629 +
1.630 + default:
1.631 + throw new Error();
1.632 + }
1.633 + }
1.634 + }
1.635 +
1.636 + /**
1.637 + * Writer for annotations and the values they contain.
1.638 + */
1.639 + protected static class AnnotationWriter
1.640 + implements Annotation.element_value.Visitor<Void,ClassOutputStream> {
1.641 + public void write(Annotation[] annos, ClassOutputStream out) {
1.642 + out.writeShort(annos.length);
1.643 + for (Annotation anno: annos)
1.644 + write(anno, out);
1.645 + }
1.646 +
1.647 + public void write(Annotation anno, ClassOutputStream out) {
1.648 + out.writeShort(anno.type_index);
1.649 + out.writeShort(anno.element_value_pairs.length);
1.650 + for (element_value_pair p: anno.element_value_pairs)
1.651 + write(p, out);
1.652 + }
1.653 +
1.654 + public void write(element_value_pair pair, ClassOutputStream out) {
1.655 + out.writeShort(pair.element_name_index);
1.656 + write(pair.value, out);
1.657 + }
1.658 +
1.659 + public void write(element_value ev, ClassOutputStream out) {
1.660 + out.writeByte(ev.tag);
1.661 + ev.accept(this, out);
1.662 + }
1.663 +
1.664 + public Void visitPrimitive(Primitive_element_value ev, ClassOutputStream out) {
1.665 + out.writeShort(ev.const_value_index);
1.666 + return null;
1.667 + }
1.668 +
1.669 + public Void visitEnum(Enum_element_value ev, ClassOutputStream out) {
1.670 + out.writeShort(ev.type_name_index);
1.671 + out.writeShort(ev.const_name_index);
1.672 + return null;
1.673 + }
1.674 +
1.675 + public Void visitClass(Class_element_value ev, ClassOutputStream out) {
1.676 + out.writeShort(ev.class_info_index);
1.677 + return null;
1.678 + }
1.679 +
1.680 + public Void visitAnnotation(Annotation_element_value ev, ClassOutputStream out) {
1.681 + write(ev.annotation_value, out);
1.682 + return null;
1.683 + }
1.684 +
1.685 + public Void visitArray(Array_element_value ev, ClassOutputStream out) {
1.686 + out.writeShort(ev.num_values);
1.687 + for (element_value v: ev.values)
1.688 + write(v, out);
1.689 + return null;
1.690 + }
1.691 + }
1.692 +}
