jjg@308:
jjg@46: /*
jjg@815: * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
jjg@46: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@46: *
jjg@46: * This code is free software; you can redistribute it and/or modify it
jjg@46: * under the terms of the GNU General Public License version 2 only, as
ohair@554: * published by the Free Software Foundation. Oracle designates this
jjg@46: * particular file as subject to the "Classpath" exception as provided
ohair@554: * by Oracle in the LICENSE file that accompanied this code.
jjg@46: *
jjg@46: * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@46: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@46: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
jjg@46: * version 2 for more details (a copy is included in the LICENSE file that
jjg@46: * accompanied this code).
jjg@46: *
jjg@46: * You should have received a copy of the GNU General Public License version
jjg@46: * 2 along with this work; if not, write to the Free Software Foundation,
jjg@46: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@46: *
ohair@554: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554: * or visit www.oracle.com if you need additional information or have any
ohair@554: * questions.
jjg@46: */
jjg@46:
jjg@46: package com.sun.tools.classfile;
jjg@46:
jjg@46: import java.io.ByteArrayOutputStream;
jjg@46: import java.io.DataOutputStream;
jjg@46: import java.io.File;
jjg@46: import java.io.FileOutputStream;
jjg@46: import java.io.IOException;
jjg@46: import java.io.OutputStream;
jjg@46:
jjg@46: import static com.sun.tools.classfile.Annotation.*;
jjg@46: import static com.sun.tools.classfile.ConstantPool.*;
jjg@46: import static com.sun.tools.classfile.StackMapTable_attribute.*;
jjg@46: import static com.sun.tools.classfile.StackMapTable_attribute.verification_type_info.*;
jjg@46:
jjg@46: /**
jjg@46: * Write a ClassFile data structure to a file or stream.
jjg@46: *
jjg@581: *
This is NOT part of any supported API.
jjg@581: * If you write code that depends on this, you do so at your own risk.
jjg@46: * This code and its internal interfaces are subject to change or
jjg@46: * deletion without notice.
jjg@46: */
jjg@46: public class ClassWriter {
jjg@46: public ClassWriter() {
jjg@46: attributeWriter = new AttributeWriter();
jjg@46: constantPoolWriter = new ConstantPoolWriter();
jjg@46: out = new ClassOutputStream();
jjg@46: }
jjg@46:
jjg@46: /**
jjg@46: * Write a ClassFile data structure to a file.
jjg@46: */
jjg@46: public void write(ClassFile classFile, File f) throws IOException {
jjg@46: FileOutputStream f_out = new FileOutputStream(f);
jjg@46: try {
jjg@46: write(classFile, f_out);
jjg@46: } finally {
jjg@46: f_out.close();
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: /**
jjg@46: * Write a ClassFile data structure to a stream.
jjg@46: */
jjg@46: public void write(ClassFile classFile, OutputStream s) throws IOException {
jjg@46: this.classFile = classFile;
jjg@46: out.reset();
jjg@46: write();
jjg@46: out.writeTo(s);
jjg@46: }
jjg@46:
jjg@46: protected void write() throws IOException {
jjg@46: writeHeader();
jjg@46: writeConstantPool();
jjg@46: writeAccessFlags(classFile.access_flags);
jjg@46: writeClassInfo();
jjg@46: writeFields();
jjg@46: writeMethods();
jjg@46: writeAttributes(classFile.attributes);
jjg@46: }
jjg@46:
jjg@46: protected void writeHeader() {
jjg@46: out.writeInt(classFile.magic);
jjg@46: out.writeShort(classFile.minor_version);
jjg@46: out.writeShort(classFile.major_version);
jjg@46: }
jjg@46:
jjg@46: protected void writeAccessFlags(AccessFlags flags) {
jjg@46: out.writeShort(flags.flags);
jjg@46: }
jjg@46:
jjg@46: protected void writeAttributes(Attributes attributes) {
jjg@46: int size = attributes.size();
jjg@46: out.writeShort(size);
jjg@46: for (Attribute attr: attributes)
jjg@46: attributeWriter.write(attr, out);
jjg@46: }
jjg@46:
jjg@46: protected void writeClassInfo() {
jjg@46: out.writeShort(classFile.this_class);
jjg@46: out.writeShort(classFile.super_class);
jjg@46: int[] interfaces = classFile.interfaces;
jjg@46: out.writeShort(interfaces.length);
jjg@46: for (int i: interfaces)
jjg@46: out.writeShort(i);
jjg@46: }
jjg@46:
jjg@46: protected void writeDescriptor(Descriptor d) {
jjg@46: out.writeShort(d.index);
jjg@46: }
jjg@46:
jjg@46: protected void writeConstantPool() {
jjg@46: ConstantPool pool = classFile.constant_pool;
jjg@46: int size = pool.size();
jjg@46: out.writeShort(size);
jjg@282: for (CPInfo cpInfo: pool.entries())
jjg@282: constantPoolWriter.write(cpInfo, out);
jjg@46: }
jjg@46:
jjg@46: protected void writeFields() throws IOException {
jjg@46: Field[] fields = classFile.fields;
jjg@46: out.writeShort(fields.length);
jjg@46: for (Field f: fields)
jjg@46: writeField(f);
jjg@46: }
jjg@46:
jjg@46: protected void writeField(Field f) throws IOException {
jjg@46: writeAccessFlags(f.access_flags);
jjg@46: out.writeShort(f.name_index);
jjg@46: writeDescriptor(f.descriptor);
jjg@46: writeAttributes(f.attributes);
jjg@46: }
jjg@46:
jjg@46: protected void writeMethods() throws IOException {
jjg@46: Method[] methods = classFile.methods;
jjg@46: out.writeShort(methods.length);
jjg@46: for (Method m: methods) {
jjg@46: writeMethod(m);
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: protected void writeMethod(Method m) throws IOException {
jjg@46: writeAccessFlags(m.access_flags);
jjg@46: out.writeShort(m.name_index);
jjg@46: writeDescriptor(m.descriptor);
jjg@46: writeAttributes(m.attributes);
jjg@46: }
jjg@46:
jjg@46: protected ClassFile classFile;
jjg@46: protected ClassOutputStream out;
jjg@46: protected AttributeWriter attributeWriter;
jjg@46: protected ConstantPoolWriter constantPoolWriter;
jjg@46:
jjg@46: /**
jjg@46: * Subtype of ByteArrayOutputStream with the convenience methods of
jjg@46: * a DataOutputStream. Since ByteArrayOutputStream does not throw
jjg@46: * IOException, there are no exceptions from the additional
jjg@46: * convenience methods either,
jjg@46: */
jjg@46: protected static class ClassOutputStream extends ByteArrayOutputStream {
jjg@46: public ClassOutputStream() {
jjg@46: d = new DataOutputStream(this);
jjg@46: }
jjg@46:
jjg@46: public void writeByte(int value) {
jjg@46: try {
jjg@46: d.writeByte(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeShort(int value) {
jjg@46: try {
jjg@46: d.writeShort(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeInt(int value) {
jjg@46: try {
jjg@46: d.writeInt(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeLong(long value) {
jjg@46: try {
jjg@46: d.writeLong(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeFloat(float value) {
jjg@46: try {
jjg@46: d.writeFloat(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeDouble(double value) {
jjg@46: try {
jjg@46: d.writeDouble(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeUTF(String value) {
jjg@46: try {
jjg@46: d.writeUTF(value);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: public void writeTo(ClassOutputStream s) {
jjg@46: try {
jjg@46: super.writeTo(s);
jjg@46: } catch (IOException ignore) {
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: private DataOutputStream d;
jjg@46: }
jjg@46:
jjg@46: /**
jjg@46: * Writer for the entries in the constant pool.
jjg@46: */
jjg@46: protected static class ConstantPoolWriter
jjg@46: implements ConstantPool.Visitor {
jjg@46: protected int write(CPInfo info, ClassOutputStream out) {
jjg@46: out.writeByte(info.getTag());
jjg@46: return info.accept(this, out);
jjg@46: }
jjg@46:
jjg@46: public Integer visitClass(CONSTANT_Class_info info, ClassOutputStream out) {
jjg@46: out.writeShort(info.name_index);
jjg@46: return 1;
jjg@46: }
jjg@46:
jjg@46: public Integer visitDouble(CONSTANT_Double_info info, ClassOutputStream out) {
jjg@46: out.writeDouble(info.value);
jjg@46: return 2;
jjg@46: }
jjg@46:
jjg@46: public Integer visitFieldref(CONSTANT_Fieldref_info info, ClassOutputStream out) {
jjg@46: writeRef(info, out);
jjg@46: return 1;
jjg@46: }
jjg@46:
jjg@46: public Integer visitFloat(CONSTANT_Float_info info, ClassOutputStream out) {
jjg@46: out.writeFloat(info.value);
jjg@46: return 1;
jjg@46: }
jjg@46:
jjg@46: public Integer visitInteger(CONSTANT_Integer_info info, ClassOutputStream out) {
jjg@46: out.writeInt(info.value);
jjg@46: return 1;
jjg@46: }
jjg@46:
jjg@46: public Integer visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, ClassOutputStream out) {
jjg@46: writeRef(info, out);
jjg@46: return 1;
jjg@46: }
jjg@46:
ksrini@826: public Integer visitInvokeDynamic(CONSTANT_InvokeDynamic_info info, ClassOutputStream out) {
ksrini@826: out.writeShort(info.bootstrap_method_attr_index);
ksrini@826: out.writeShort(info.name_and_type_index);
ksrini@826: return 1;
ksrini@826: }
ksrini@826:
jjg@46: public Integer visitLong(CONSTANT_Long_info info, ClassOutputStream out) {
jjg@46: out.writeLong(info.value);
jjg@46: return 2;
jjg@46: }
jjg@46:
jjg@46: public Integer visitNameAndType(CONSTANT_NameAndType_info info, ClassOutputStream out) {
jjg@46: out.writeShort(info.name_index);
jjg@46: out.writeShort(info.type_index);
jjg@46: return 1;
jjg@46: }
jjg@46:
ksrini@826: public Integer visitMethodHandle(CONSTANT_MethodHandle_info info, ClassOutputStream out) {
ksrini@826: out.writeByte(info.reference_kind.tag);
ksrini@826: out.writeShort(info.reference_index);
ksrini@826: return 1;
ksrini@826: }
ksrini@826:
ksrini@826: public Integer visitMethodType(CONSTANT_MethodType_info info, ClassOutputStream out) {
ksrini@826: out.writeShort(info.descriptor_index);
ksrini@826: return 1;
ksrini@826: }
ksrini@826:
jjg@46: public Integer visitMethodref(CONSTANT_Methodref_info info, ClassOutputStream out) {
jjg@46: return writeRef(info, out);
jjg@46: }
jjg@46:
jjg@46: public Integer visitString(CONSTANT_String_info info, ClassOutputStream out) {
jjg@46: out.writeShort(info.string_index);
jjg@46: return 1;
jjg@46: }
jjg@46:
jjg@46: public Integer visitUtf8(CONSTANT_Utf8_info info, ClassOutputStream out) {
jjg@46: out.writeUTF(info.value);
jjg@46: return 1;
jjg@46: }
jjg@46:
jjg@46: protected Integer writeRef(CPRefInfo info, ClassOutputStream out) {
jjg@46: out.writeShort(info.class_index);
jjg@46: out.writeShort(info.name_and_type_index);
jjg@46: return 1;
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: /**
jjg@46: * Writer for the different types of attribute.
jjg@46: */
jjg@46: protected static class AttributeWriter implements Attribute.Visitor {
jjg@46: public void write(Attributes attributes, ClassOutputStream out) {
jjg@46: int size = attributes.size();
jjg@46: out.writeShort(size);
jjg@46: for (Attribute a: attributes)
jjg@46: write(a, out);
jjg@46: }
jjg@46:
jjg@46: // Note: due to the use of shared resources, this method is not reentrant.
jjg@46: public void write(Attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.attribute_name_index);
jjg@46: sharedOut.reset();
jjg@46: attr.accept(this, sharedOut);
jjg@46: out.writeInt(sharedOut.size());
jjg@46: sharedOut.writeTo(out);
jjg@46: }
jjg@46:
jjg@46: protected ClassOutputStream sharedOut = new ClassOutputStream();
jjg@46: protected AnnotationWriter annotationWriter = new AnnotationWriter();
jjg@46:
jjg@46: public Void visitDefault(DefaultAttribute attr, ClassOutputStream out) {
jjg@46: out.write(attr.info, 0, attr.info.length);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitAnnotationDefault(AnnotationDefault_attribute attr, ClassOutputStream out) {
jjg@46: annotationWriter.write(attr.default_value, out);
jjg@46: return null;
jjg@46: }
jjg@46:
ksrini@826: public Void visitBootstrapMethods(BootstrapMethods_attribute attr, ClassOutputStream out) {
ksrini@826: out.writeShort(attr.bootstrap_method_specifiers.length);
ksrini@826: for (BootstrapMethods_attribute.BootstrapMethodSpecifier bsm : attr.bootstrap_method_specifiers) {
ksrini@826: out.writeShort(bsm.bootstrap_method_ref);
ksrini@826: int bsm_args_count = bsm.bootstrap_arguments.length;
ksrini@826: out.writeShort(bsm_args_count);
ksrini@826: for (int i : bsm.bootstrap_arguments) {
ksrini@826: out.writeShort(i);
ksrini@826: }
ksrini@826: }
ksrini@826: return null;
ksrini@826: }
ksrini@826:
jjg@46: public Void visitCharacterRangeTable(CharacterRangeTable_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.character_range_table.length);
jjg@46: for (CharacterRangeTable_attribute.Entry e: attr.character_range_table)
jjg@46: writeCharacterRangeTableEntry(e, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeCharacterRangeTableEntry(CharacterRangeTable_attribute.Entry entry, ClassOutputStream out) {
jjg@46: out.writeShort(entry.start_pc);
jjg@46: out.writeShort(entry.end_pc);
jjg@46: out.writeInt(entry.character_range_start);
jjg@46: out.writeInt(entry.character_range_end);
jjg@46: out.writeShort(entry.flags);
jjg@46: }
jjg@46:
jjg@46: public Void visitCode(Code_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.max_stack);
jjg@46: out.writeShort(attr.max_locals);
jjg@46: out.writeInt(attr.code.length);
jjg@46: out.write(attr.code, 0, attr.code.length);
jjg@46: out.writeShort(attr.exception_table.length);
jjg@46: for (Code_attribute.Exception_data e: attr.exception_table)
jjg@46: writeExceptionTableEntry(e, out);
jjg@46: new AttributeWriter().write(attr.attributes, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeExceptionTableEntry(Code_attribute.Exception_data exception_data, ClassOutputStream out) {
jjg@46: out.writeShort(exception_data.start_pc);
jjg@46: out.writeShort(exception_data.end_pc);
jjg@46: out.writeShort(exception_data.handler_pc);
jjg@46: out.writeShort(exception_data.catch_type);
jjg@46: }
jjg@46:
jjg@46: public Void visitCompilationID(CompilationID_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.compilationID_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitConstantValue(ConstantValue_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.constantvalue_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitDeprecated(Deprecated_attribute attr, ClassOutputStream out) {
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitEnclosingMethod(EnclosingMethod_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.class_index);
jjg@46: out.writeShort(attr.method_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitExceptions(Exceptions_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.exception_index_table.length);
jjg@46: for (int i: attr.exception_index_table)
jjg@46: out.writeShort(i);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitInnerClasses(InnerClasses_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.classes.length);
jjg@46: for (InnerClasses_attribute.Info info: attr.classes)
jjg@46: writeInnerClassesInfo(info, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeInnerClassesInfo(InnerClasses_attribute.Info info, ClassOutputStream out) {
jjg@46: out.writeShort(info.inner_class_info_index);
jjg@46: out.writeShort(info.outer_class_info_index);
jjg@46: out.writeShort(info.inner_name_index);
jjg@46: writeAccessFlags(info.inner_class_access_flags, out);
jjg@46: }
jjg@46:
jjg@46: public Void visitLineNumberTable(LineNumberTable_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.line_number_table.length);
jjg@46: for (LineNumberTable_attribute.Entry e: attr.line_number_table)
jjg@46: writeLineNumberTableEntry(e, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeLineNumberTableEntry(LineNumberTable_attribute.Entry entry, ClassOutputStream out) {
jjg@46: out.writeShort(entry.start_pc);
jjg@46: out.writeShort(entry.line_number);
jjg@46: }
jjg@46:
jjg@46: public Void visitLocalVariableTable(LocalVariableTable_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.local_variable_table.length);
jjg@46: for (LocalVariableTable_attribute.Entry e: attr.local_variable_table)
jjg@46: writeLocalVariableTableEntry(e, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeLocalVariableTableEntry(LocalVariableTable_attribute.Entry entry, ClassOutputStream out) {
jjg@46: out.writeShort(entry.start_pc);
jjg@46: out.writeShort(entry.length);
jjg@46: out.writeShort(entry.name_index);
jjg@46: out.writeShort(entry.descriptor_index);
jjg@46: out.writeShort(entry.index);
jjg@46: }
jjg@46:
jjg@46: public Void visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, ClassOutputStream out) {
jjg@352: out.writeShort(attr.local_variable_table.length);
jjg@46: for (LocalVariableTypeTable_attribute.Entry e: attr.local_variable_table)
jjg@46: writeLocalVariableTypeTableEntry(e, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeLocalVariableTypeTableEntry(LocalVariableTypeTable_attribute.Entry entry, ClassOutputStream out) {
jjg@46: out.writeShort(entry.start_pc);
jjg@46: out.writeShort(entry.length);
jjg@46: out.writeShort(entry.name_index);
jjg@46: out.writeShort(entry.signature_index);
jjg@46: out.writeShort(entry.index);
jjg@46: }
jjg@46:
jjg@46: public Void visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, ClassOutputStream out) {
jjg@46: annotationWriter.write(attr.annotations, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, ClassOutputStream out) {
jjg@46: annotationWriter.write(attr.annotations, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, ClassOutputStream out) {
jjg@46: out.writeByte(attr.parameter_annotations.length);
jjg@46: for (Annotation[] annos: attr.parameter_annotations)
jjg@46: annotationWriter.write(annos, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, ClassOutputStream out) {
jjg@46: out.writeByte(attr.parameter_annotations.length);
jjg@46: for (Annotation[] annos: attr.parameter_annotations)
jjg@46: annotationWriter.write(annos, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitSignature(Signature_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.signature_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitSourceDebugExtension(SourceDebugExtension_attribute attr, ClassOutputStream out) {
jjg@46: out.write(attr.debug_extension, 0, attr.debug_extension.length);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitSourceFile(SourceFile_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.sourcefile_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitSourceID(SourceID_attribute attr, ClassOutputStream out) {
jjg@46: out.writeShort(attr.sourceID_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitStackMap(StackMap_attribute attr, ClassOutputStream out) {
jjg@46: if (stackMapWriter == null)
jjg@46: stackMapWriter = new StackMapTableWriter();
jjg@46:
jjg@46: out.writeShort(attr.entries.length);
jjg@46: for (stack_map_frame f: attr.entries)
jjg@46: stackMapWriter.write(f, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitStackMapTable(StackMapTable_attribute attr, ClassOutputStream out) {
jjg@46: if (stackMapWriter == null)
jjg@46: stackMapWriter = new StackMapTableWriter();
jjg@46:
jjg@46: out.writeShort(attr.entries.length);
jjg@46: for (stack_map_frame f: attr.entries)
jjg@46: stackMapWriter.write(f, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitSynthetic(Synthetic_attribute attr, ClassOutputStream out) {
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeAccessFlags(AccessFlags flags, ClassOutputStream p) {
jjg@46: sharedOut.writeShort(flags.flags);
jjg@46: }
jjg@46:
jjg@46: protected StackMapTableWriter stackMapWriter;
jjg@46: }
jjg@46:
jjg@46: /**
jjg@46: * Writer for the frames of StackMap and StackMapTable attributes.
jjg@46: */
jjg@46: protected static class StackMapTableWriter
jjg@46: implements stack_map_frame.Visitor {
jjg@46:
jjg@46: public void write(stack_map_frame frame, ClassOutputStream out) {
jjg@46: out.write(frame.frame_type);
jjg@46: frame.accept(this, out);
jjg@46: }
jjg@46:
jjg@46: public Void visit_same_frame(same_frame frame, ClassOutputStream p) {
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visit_same_locals_1_stack_item_frame(same_locals_1_stack_item_frame frame, ClassOutputStream out) {
jjg@46: writeVerificationTypeInfo(frame.stack[0], out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visit_same_locals_1_stack_item_frame_extended(same_locals_1_stack_item_frame_extended frame, ClassOutputStream out) {
jjg@46: out.writeShort(frame.offset_delta);
jjg@46: writeVerificationTypeInfo(frame.stack[0], out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visit_chop_frame(chop_frame frame, ClassOutputStream out) {
jjg@46: out.writeShort(frame.offset_delta);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visit_same_frame_extended(same_frame_extended frame, ClassOutputStream out) {
jjg@46: out.writeShort(frame.offset_delta);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visit_append_frame(append_frame frame, ClassOutputStream out) {
jjg@46: out.writeShort(frame.offset_delta);
jjg@46: for (verification_type_info l: frame.locals)
jjg@46: writeVerificationTypeInfo(l, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visit_full_frame(full_frame frame, ClassOutputStream out) {
jjg@46: out.writeShort(frame.offset_delta);
jjg@46: out.writeShort(frame.locals.length);
jjg@46: for (verification_type_info l: frame.locals)
jjg@46: writeVerificationTypeInfo(l, out);
jjg@46: out.writeShort(frame.stack.length);
jjg@46: for (verification_type_info s: frame.stack)
jjg@46: writeVerificationTypeInfo(s, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: protected void writeVerificationTypeInfo(verification_type_info info,
jjg@46: ClassOutputStream out) {
jjg@46: out.write(info.tag);
jjg@46: switch (info.tag) {
jjg@46: case ITEM_Top:
jjg@46: case ITEM_Integer:
jjg@46: case ITEM_Float:
jjg@46: case ITEM_Long:
jjg@46: case ITEM_Double:
jjg@46: case ITEM_Null:
jjg@46: case ITEM_UninitializedThis:
jjg@46: break;
jjg@46:
jjg@46: case ITEM_Object:
jjg@46: Object_variable_info o = (Object_variable_info) info;
jjg@46: out.writeShort(o.cpool_index);
jjg@46: break;
jjg@46:
jjg@46: case ITEM_Uninitialized:
jjg@46: Uninitialized_variable_info u = (Uninitialized_variable_info) info;
jjg@46: out.writeShort(u.offset);
jjg@46: break;
jjg@46:
jjg@46: default:
jjg@46: throw new Error();
jjg@46: }
jjg@46: }
jjg@46: }
jjg@46:
jjg@46: /**
jjg@46: * Writer for annotations and the values they contain.
jjg@46: */
jjg@46: protected static class AnnotationWriter
jjg@46: implements Annotation.element_value.Visitor {
jjg@46: public void write(Annotation[] annos, ClassOutputStream out) {
jjg@46: out.writeShort(annos.length);
jjg@46: for (Annotation anno: annos)
jjg@46: write(anno, out);
jjg@46: }
jjg@46:
jjg@46: public void write(Annotation anno, ClassOutputStream out) {
jjg@46: out.writeShort(anno.type_index);
jjg@46: out.writeShort(anno.element_value_pairs.length);
jjg@46: for (element_value_pair p: anno.element_value_pairs)
jjg@46: write(p, out);
jjg@46: }
jjg@46:
jjg@46: public void write(element_value_pair pair, ClassOutputStream out) {
jjg@46: out.writeShort(pair.element_name_index);
jjg@46: write(pair.value, out);
jjg@46: }
jjg@46:
jjg@46: public void write(element_value ev, ClassOutputStream out) {
jjg@46: out.writeByte(ev.tag);
jjg@46: ev.accept(this, out);
jjg@46: }
jjg@46:
jjg@46: public Void visitPrimitive(Primitive_element_value ev, ClassOutputStream out) {
jjg@46: out.writeShort(ev.const_value_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitEnum(Enum_element_value ev, ClassOutputStream out) {
jjg@46: out.writeShort(ev.type_name_index);
jjg@46: out.writeShort(ev.const_name_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitClass(Class_element_value ev, ClassOutputStream out) {
jjg@46: out.writeShort(ev.class_info_index);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitAnnotation(Annotation_element_value ev, ClassOutputStream out) {
jjg@46: write(ev.annotation_value, out);
jjg@46: return null;
jjg@46: }
jjg@46:
jjg@46: public Void visitArray(Array_element_value ev, ClassOutputStream out) {
jjg@46: out.writeShort(ev.num_values);
jjg@46: for (element_value v: ev.values)
jjg@46: write(v, out);
jjg@46: return null;
jjg@46: }
jjg@308:
jjg@46: }
jjg@46: }