--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.jdeps/share/classes/com/sun/tools/classfile/ClassWriter.java Wed May 27 13:25:18 2015 -0700
@@ -0,0 +1,808 @@
+
+/*
+ * Copyright (c) 2008, 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.classfile;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import static com.sun.tools.classfile.Annotation.*;
+import static com.sun.tools.classfile.ConstantPool.*;
+import static com.sun.tools.classfile.StackMapTable_attribute.*;
+import static com.sun.tools.classfile.StackMapTable_attribute.verification_type_info.*;
+
+/**
+ * Write a ClassFile data structure to a file or stream.
+ *
+ * <p><b>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.</b>
+ */
+public class ClassWriter {
+ public ClassWriter() {
+ attributeWriter = new AttributeWriter();
+ constantPoolWriter = new ConstantPoolWriter();
+ out = new ClassOutputStream();
+ }
+
+ /**
+ * Write a ClassFile data structure to a file.
+ */
+ public void write(ClassFile classFile, File f) throws IOException {
+ try (FileOutputStream f_out = new FileOutputStream(f)) {
+ write(classFile, f_out);
+ }
+ }
+
+ /**
+ * Write a ClassFile data structure to a stream.
+ */
+ public void write(ClassFile classFile, OutputStream s) throws IOException {
+ this.classFile = classFile;
+ out.reset();
+ write();
+ out.writeTo(s);
+ }
+
+ protected void write() throws IOException {
+ writeHeader();
+ writeConstantPool();
+ writeAccessFlags(classFile.access_flags);
+ writeClassInfo();
+ writeFields();
+ writeMethods();
+ writeAttributes(classFile.attributes);
+ }
+
+ protected void writeHeader() {
+ out.writeInt(classFile.magic);
+ out.writeShort(classFile.minor_version);
+ out.writeShort(classFile.major_version);
+ }
+
+ protected void writeAccessFlags(AccessFlags flags) {
+ out.writeShort(flags.flags);
+ }
+
+ protected void writeAttributes(Attributes attributes) {
+ int size = attributes.size();
+ out.writeShort(size);
+ for (Attribute attr: attributes)
+ attributeWriter.write(attr, out);
+ }
+
+ protected void writeClassInfo() {
+ out.writeShort(classFile.this_class);
+ out.writeShort(classFile.super_class);
+ int[] interfaces = classFile.interfaces;
+ out.writeShort(interfaces.length);
+ for (int i: interfaces)
+ out.writeShort(i);
+ }
+
+ protected void writeDescriptor(Descriptor d) {
+ out.writeShort(d.index);
+ }
+
+ protected void writeConstantPool() {
+ ConstantPool pool = classFile.constant_pool;
+ int size = pool.size();
+ out.writeShort(size);
+ for (CPInfo cpInfo: pool.entries())
+ constantPoolWriter.write(cpInfo, out);
+ }
+
+ protected void writeFields() throws IOException {
+ Field[] fields = classFile.fields;
+ out.writeShort(fields.length);
+ for (Field f: fields)
+ writeField(f);
+ }
+
+ protected void writeField(Field f) throws IOException {
+ writeAccessFlags(f.access_flags);
+ out.writeShort(f.name_index);
+ writeDescriptor(f.descriptor);
+ writeAttributes(f.attributes);
+ }
+
+ protected void writeMethods() throws IOException {
+ Method[] methods = classFile.methods;
+ out.writeShort(methods.length);
+ for (Method m: methods) {
+ writeMethod(m);
+ }
+ }
+
+ protected void writeMethod(Method m) throws IOException {
+ writeAccessFlags(m.access_flags);
+ out.writeShort(m.name_index);
+ writeDescriptor(m.descriptor);
+ writeAttributes(m.attributes);
+ }
+
+ protected ClassFile classFile;
+ protected ClassOutputStream out;
+ protected AttributeWriter attributeWriter;
+ protected ConstantPoolWriter constantPoolWriter;
+
+ /**
+ * Subtype of ByteArrayOutputStream with the convenience methods of
+ * a DataOutputStream. Since ByteArrayOutputStream does not throw
+ * IOException, there are no exceptions from the additional
+ * convenience methods either,
+ */
+ protected static class ClassOutputStream extends ByteArrayOutputStream {
+ public ClassOutputStream() {
+ d = new DataOutputStream(this);
+ }
+
+ public void writeByte(int value) {
+ try {
+ d.writeByte(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeShort(int value) {
+ try {
+ d.writeShort(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeInt(int value) {
+ try {
+ d.writeInt(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeLong(long value) {
+ try {
+ d.writeLong(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeFloat(float value) {
+ try {
+ d.writeFloat(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeDouble(double value) {
+ try {
+ d.writeDouble(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeUTF(String value) {
+ try {
+ d.writeUTF(value);
+ } catch (IOException ignore) {
+ }
+ }
+
+ public void writeTo(ClassOutputStream s) {
+ try {
+ super.writeTo(s);
+ } catch (IOException ignore) {
+ }
+ }
+
+ private DataOutputStream d;
+ }
+
+ /**
+ * Writer for the entries in the constant pool.
+ */
+ protected static class ConstantPoolWriter
+ implements ConstantPool.Visitor<Integer,ClassOutputStream> {
+ protected int write(CPInfo info, ClassOutputStream out) {
+ out.writeByte(info.getTag());
+ return info.accept(this, out);
+ }
+
+ public Integer visitClass(CONSTANT_Class_info info, ClassOutputStream out) {
+ out.writeShort(info.name_index);
+ return 1;
+ }
+
+ public Integer visitDouble(CONSTANT_Double_info info, ClassOutputStream out) {
+ out.writeDouble(info.value);
+ return 2;
+ }
+
+ public Integer visitFieldref(CONSTANT_Fieldref_info info, ClassOutputStream out) {
+ writeRef(info, out);
+ return 1;
+ }
+
+ public Integer visitFloat(CONSTANT_Float_info info, ClassOutputStream out) {
+ out.writeFloat(info.value);
+ return 1;
+ }
+
+ public Integer visitInteger(CONSTANT_Integer_info info, ClassOutputStream out) {
+ out.writeInt(info.value);
+ return 1;
+ }
+
+ public Integer visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, ClassOutputStream out) {
+ writeRef(info, out);
+ return 1;
+ }
+
+ public Integer visitInvokeDynamic(CONSTANT_InvokeDynamic_info info, ClassOutputStream out) {
+ out.writeShort(info.bootstrap_method_attr_index);
+ out.writeShort(info.name_and_type_index);
+ return 1;
+ }
+
+ public Integer visitLong(CONSTANT_Long_info info, ClassOutputStream out) {
+ out.writeLong(info.value);
+ return 2;
+ }
+
+ public Integer visitNameAndType(CONSTANT_NameAndType_info info, ClassOutputStream out) {
+ out.writeShort(info.name_index);
+ out.writeShort(info.type_index);
+ return 1;
+ }
+
+ public Integer visitMethodHandle(CONSTANT_MethodHandle_info info, ClassOutputStream out) {
+ out.writeByte(info.reference_kind.tag);
+ out.writeShort(info.reference_index);
+ return 1;
+ }
+
+ public Integer visitMethodType(CONSTANT_MethodType_info info, ClassOutputStream out) {
+ out.writeShort(info.descriptor_index);
+ return 1;
+ }
+
+ public Integer visitMethodref(CONSTANT_Methodref_info info, ClassOutputStream out) {
+ return writeRef(info, out);
+ }
+
+ public Integer visitString(CONSTANT_String_info info, ClassOutputStream out) {
+ out.writeShort(info.string_index);
+ return 1;
+ }
+
+ public Integer visitUtf8(CONSTANT_Utf8_info info, ClassOutputStream out) {
+ out.writeUTF(info.value);
+ return 1;
+ }
+
+ protected Integer writeRef(CPRefInfo info, ClassOutputStream out) {
+ out.writeShort(info.class_index);
+ out.writeShort(info.name_and_type_index);
+ return 1;
+ }
+ }
+
+ /**
+ * Writer for the different types of attribute.
+ */
+ protected static class AttributeWriter implements Attribute.Visitor<Void,ClassOutputStream> {
+ public void write(Attributes attributes, ClassOutputStream out) {
+ int size = attributes.size();
+ out.writeShort(size);
+ for (Attribute a: attributes)
+ write(a, out);
+ }
+
+ // Note: due to the use of shared resources, this method is not reentrant.
+ public void write(Attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.attribute_name_index);
+ sharedOut.reset();
+ attr.accept(this, sharedOut);
+ out.writeInt(sharedOut.size());
+ sharedOut.writeTo(out);
+ }
+
+ protected ClassOutputStream sharedOut = new ClassOutputStream();
+ protected AnnotationWriter annotationWriter = new AnnotationWriter();
+
+ public Void visitDefault(DefaultAttribute attr, ClassOutputStream out) {
+ out.write(attr.info, 0, attr.info.length);
+ return null;
+ }
+
+ public Void visitAnnotationDefault(AnnotationDefault_attribute attr, ClassOutputStream out) {
+ annotationWriter.write(attr.default_value, out);
+ return null;
+ }
+
+ public Void visitBootstrapMethods(BootstrapMethods_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.bootstrap_method_specifiers.length);
+ for (BootstrapMethods_attribute.BootstrapMethodSpecifier bsm : attr.bootstrap_method_specifiers) {
+ out.writeShort(bsm.bootstrap_method_ref);
+ int bsm_args_count = bsm.bootstrap_arguments.length;
+ out.writeShort(bsm_args_count);
+ for (int i : bsm.bootstrap_arguments) {
+ out.writeShort(i);
+ }
+ }
+ return null;
+ }
+
+ public Void visitCharacterRangeTable(CharacterRangeTable_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.character_range_table.length);
+ for (CharacterRangeTable_attribute.Entry e: attr.character_range_table)
+ writeCharacterRangeTableEntry(e, out);
+ return null;
+ }
+
+ protected void writeCharacterRangeTableEntry(CharacterRangeTable_attribute.Entry entry, ClassOutputStream out) {
+ out.writeShort(entry.start_pc);
+ out.writeShort(entry.end_pc);
+ out.writeInt(entry.character_range_start);
+ out.writeInt(entry.character_range_end);
+ out.writeShort(entry.flags);
+ }
+
+ public Void visitCode(Code_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.max_stack);
+ out.writeShort(attr.max_locals);
+ out.writeInt(attr.code.length);
+ out.write(attr.code, 0, attr.code.length);
+ out.writeShort(attr.exception_table.length);
+ for (Code_attribute.Exception_data e: attr.exception_table)
+ writeExceptionTableEntry(e, out);
+ new AttributeWriter().write(attr.attributes, out);
+ return null;
+ }
+
+ protected void writeExceptionTableEntry(Code_attribute.Exception_data exception_data, ClassOutputStream out) {
+ out.writeShort(exception_data.start_pc);
+ out.writeShort(exception_data.end_pc);
+ out.writeShort(exception_data.handler_pc);
+ out.writeShort(exception_data.catch_type);
+ }
+
+ public Void visitCompilationID(CompilationID_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.compilationID_index);
+ return null;
+ }
+
+ public Void visitConstantValue(ConstantValue_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.constantvalue_index);
+ return null;
+ }
+
+ public Void visitDeprecated(Deprecated_attribute attr, ClassOutputStream out) {
+ return null;
+ }
+
+ public Void visitEnclosingMethod(EnclosingMethod_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.class_index);
+ out.writeShort(attr.method_index);
+ return null;
+ }
+
+ public Void visitExceptions(Exceptions_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.exception_index_table.length);
+ for (int i: attr.exception_index_table)
+ out.writeShort(i);
+ return null;
+ }
+
+ public Void visitInnerClasses(InnerClasses_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.classes.length);
+ for (InnerClasses_attribute.Info info: attr.classes)
+ writeInnerClassesInfo(info, out);
+ return null;
+ }
+
+ protected void writeInnerClassesInfo(InnerClasses_attribute.Info info, ClassOutputStream out) {
+ out.writeShort(info.inner_class_info_index);
+ out.writeShort(info.outer_class_info_index);
+ out.writeShort(info.inner_name_index);
+ writeAccessFlags(info.inner_class_access_flags, out);
+ }
+
+ public Void visitLineNumberTable(LineNumberTable_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.line_number_table.length);
+ for (LineNumberTable_attribute.Entry e: attr.line_number_table)
+ writeLineNumberTableEntry(e, out);
+ return null;
+ }
+
+ protected void writeLineNumberTableEntry(LineNumberTable_attribute.Entry entry, ClassOutputStream out) {
+ out.writeShort(entry.start_pc);
+ out.writeShort(entry.line_number);
+ }
+
+ public Void visitLocalVariableTable(LocalVariableTable_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.local_variable_table.length);
+ for (LocalVariableTable_attribute.Entry e: attr.local_variable_table)
+ writeLocalVariableTableEntry(e, out);
+ return null;
+ }
+
+ protected void writeLocalVariableTableEntry(LocalVariableTable_attribute.Entry entry, ClassOutputStream out) {
+ out.writeShort(entry.start_pc);
+ out.writeShort(entry.length);
+ out.writeShort(entry.name_index);
+ out.writeShort(entry.descriptor_index);
+ out.writeShort(entry.index);
+ }
+
+ public Void visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.local_variable_table.length);
+ for (LocalVariableTypeTable_attribute.Entry e: attr.local_variable_table)
+ writeLocalVariableTypeTableEntry(e, out);
+ return null;
+ }
+
+ protected void writeLocalVariableTypeTableEntry(LocalVariableTypeTable_attribute.Entry entry, ClassOutputStream out) {
+ out.writeShort(entry.start_pc);
+ out.writeShort(entry.length);
+ out.writeShort(entry.name_index);
+ out.writeShort(entry.signature_index);
+ out.writeShort(entry.index);
+ }
+
+ public Void visitMethodParameters(MethodParameters_attribute attr, ClassOutputStream out) {
+ out.writeByte(attr.method_parameter_table.length);
+ for (MethodParameters_attribute.Entry e : attr.method_parameter_table) {
+ out.writeShort(e.name_index);
+ out.writeShort(e.flags);
+ }
+ return null;
+ }
+
+ public Void visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, ClassOutputStream out) {
+ annotationWriter.write(attr.annotations, out);
+ return null;
+ }
+
+ public Void visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, ClassOutputStream out) {
+ annotationWriter.write(attr.annotations, out);
+ return null;
+ }
+
+ public Void visitRuntimeVisibleTypeAnnotations(RuntimeVisibleTypeAnnotations_attribute attr, ClassOutputStream out) {
+ annotationWriter.write(attr.annotations, out);
+ return null;
+ }
+
+ public Void visitRuntimeInvisibleTypeAnnotations(RuntimeInvisibleTypeAnnotations_attribute attr, ClassOutputStream out) {
+ annotationWriter.write(attr.annotations, out);
+ return null;
+ }
+
+ public Void visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, ClassOutputStream out) {
+ out.writeByte(attr.parameter_annotations.length);
+ for (Annotation[] annos: attr.parameter_annotations)
+ annotationWriter.write(annos, out);
+ return null;
+ }
+
+ public Void visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, ClassOutputStream out) {
+ out.writeByte(attr.parameter_annotations.length);
+ for (Annotation[] annos: attr.parameter_annotations)
+ annotationWriter.write(annos, out);
+ return null;
+ }
+
+ public Void visitSignature(Signature_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.signature_index);
+ return null;
+ }
+
+ public Void visitSourceDebugExtension(SourceDebugExtension_attribute attr, ClassOutputStream out) {
+ out.write(attr.debug_extension, 0, attr.debug_extension.length);
+ return null;
+ }
+
+ public Void visitSourceFile(SourceFile_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.sourcefile_index);
+ return null;
+ }
+
+ public Void visitSourceID(SourceID_attribute attr, ClassOutputStream out) {
+ out.writeShort(attr.sourceID_index);
+ return null;
+ }
+
+ public Void visitStackMap(StackMap_attribute attr, ClassOutputStream out) {
+ if (stackMapWriter == null)
+ stackMapWriter = new StackMapTableWriter();
+
+ out.writeShort(attr.entries.length);
+ for (stack_map_frame f: attr.entries)
+ stackMapWriter.write(f, out);
+ return null;
+ }
+
+ public Void visitStackMapTable(StackMapTable_attribute attr, ClassOutputStream out) {
+ if (stackMapWriter == null)
+ stackMapWriter = new StackMapTableWriter();
+
+ out.writeShort(attr.entries.length);
+ for (stack_map_frame f: attr.entries)
+ stackMapWriter.write(f, out);
+ return null;
+ }
+
+ public Void visitSynthetic(Synthetic_attribute attr, ClassOutputStream out) {
+ return null;
+ }
+
+ protected void writeAccessFlags(AccessFlags flags, ClassOutputStream p) {
+ sharedOut.writeShort(flags.flags);
+ }
+
+ protected StackMapTableWriter stackMapWriter;
+ }
+
+ /**
+ * Writer for the frames of StackMap and StackMapTable attributes.
+ */
+ protected static class StackMapTableWriter
+ implements stack_map_frame.Visitor<Void,ClassOutputStream> {
+
+ public void write(stack_map_frame frame, ClassOutputStream out) {
+ out.write(frame.frame_type);
+ frame.accept(this, out);
+ }
+
+ public Void visit_same_frame(same_frame frame, ClassOutputStream p) {
+ return null;
+ }
+
+ public Void visit_same_locals_1_stack_item_frame(same_locals_1_stack_item_frame frame, ClassOutputStream out) {
+ writeVerificationTypeInfo(frame.stack[0], out);
+ return null;
+ }
+
+ public Void visit_same_locals_1_stack_item_frame_extended(same_locals_1_stack_item_frame_extended frame, ClassOutputStream out) {
+ out.writeShort(frame.offset_delta);
+ writeVerificationTypeInfo(frame.stack[0], out);
+ return null;
+ }
+
+ public Void visit_chop_frame(chop_frame frame, ClassOutputStream out) {
+ out.writeShort(frame.offset_delta);
+ return null;
+ }
+
+ public Void visit_same_frame_extended(same_frame_extended frame, ClassOutputStream out) {
+ out.writeShort(frame.offset_delta);
+ return null;
+ }
+
+ public Void visit_append_frame(append_frame frame, ClassOutputStream out) {
+ out.writeShort(frame.offset_delta);
+ for (verification_type_info l: frame.locals)
+ writeVerificationTypeInfo(l, out);
+ return null;
+ }
+
+ public Void visit_full_frame(full_frame frame, ClassOutputStream out) {
+ out.writeShort(frame.offset_delta);
+ out.writeShort(frame.locals.length);
+ for (verification_type_info l: frame.locals)
+ writeVerificationTypeInfo(l, out);
+ out.writeShort(frame.stack.length);
+ for (verification_type_info s: frame.stack)
+ writeVerificationTypeInfo(s, out);
+ return null;
+ }
+
+ protected void writeVerificationTypeInfo(verification_type_info info,
+ ClassOutputStream out) {
+ out.write(info.tag);
+ switch (info.tag) {
+ case ITEM_Top:
+ case ITEM_Integer:
+ case ITEM_Float:
+ case ITEM_Long:
+ case ITEM_Double:
+ case ITEM_Null:
+ case ITEM_UninitializedThis:
+ break;
+
+ case ITEM_Object:
+ Object_variable_info o = (Object_variable_info) info;
+ out.writeShort(o.cpool_index);
+ break;
+
+ case ITEM_Uninitialized:
+ Uninitialized_variable_info u = (Uninitialized_variable_info) info;
+ out.writeShort(u.offset);
+ break;
+
+ default:
+ throw new Error();
+ }
+ }
+ }
+
+ /**
+ * Writer for annotations and the values they contain.
+ */
+ protected static class AnnotationWriter
+ implements Annotation.element_value.Visitor<Void,ClassOutputStream> {
+ public void write(Annotation[] annos, ClassOutputStream out) {
+ out.writeShort(annos.length);
+ for (Annotation anno: annos)
+ write(anno, out);
+ }
+
+ public void write(TypeAnnotation[] annos, ClassOutputStream out) {
+ out.writeShort(annos.length);
+ for (TypeAnnotation anno: annos)
+ write(anno, out);
+ }
+
+ public void write(Annotation anno, ClassOutputStream out) {
+ out.writeShort(anno.type_index);
+ out.writeShort(anno.element_value_pairs.length);
+ for (element_value_pair p: anno.element_value_pairs)
+ write(p, out);
+ }
+
+ public void write(TypeAnnotation anno, ClassOutputStream out) {
+ write(anno.position, out);
+ write(anno.annotation, out);
+ }
+
+ public void write(element_value_pair pair, ClassOutputStream out) {
+ out.writeShort(pair.element_name_index);
+ write(pair.value, out);
+ }
+
+ public void write(element_value ev, ClassOutputStream out) {
+ out.writeByte(ev.tag);
+ ev.accept(this, out);
+ }
+
+ public Void visitPrimitive(Primitive_element_value ev, ClassOutputStream out) {
+ out.writeShort(ev.const_value_index);
+ return null;
+ }
+
+ public Void visitEnum(Enum_element_value ev, ClassOutputStream out) {
+ out.writeShort(ev.type_name_index);
+ out.writeShort(ev.const_name_index);
+ return null;
+ }
+
+ public Void visitClass(Class_element_value ev, ClassOutputStream out) {
+ out.writeShort(ev.class_info_index);
+ return null;
+ }
+
+ public Void visitAnnotation(Annotation_element_value ev, ClassOutputStream out) {
+ write(ev.annotation_value, out);
+ return null;
+ }
+
+ public Void visitArray(Array_element_value ev, ClassOutputStream out) {
+ out.writeShort(ev.num_values);
+ for (element_value v: ev.values)
+ write(v, out);
+ return null;
+ }
+
+ // TODO: Move this to TypeAnnotation to be closer with similar logic?
+ private void write(TypeAnnotation.Position p, ClassOutputStream out) {
+ out.writeByte(p.type.targetTypeValue());
+ switch (p.type) {
+ // instanceof
+ case INSTANCEOF:
+ // new expression
+ case NEW:
+ // constructor/method reference receiver
+ case CONSTRUCTOR_REFERENCE:
+ case METHOD_REFERENCE:
+ out.writeShort(p.offset);
+ break;
+ // local variable
+ case LOCAL_VARIABLE:
+ // resource variable
+ case RESOURCE_VARIABLE:
+ int table_length = p.lvarOffset.length;
+ out.writeShort(table_length);
+ for (int i = 0; i < table_length; ++i) {
+ out.writeShort(1); // for table length
+ out.writeShort(p.lvarOffset[i]);
+ out.writeShort(p.lvarLength[i]);
+ out.writeShort(p.lvarIndex[i]);
+ }
+ break;
+ // exception parameter
+ case EXCEPTION_PARAMETER:
+ out.writeShort(p.exception_index);
+ break;
+ // method receiver
+ case METHOD_RECEIVER:
+ // Do nothing
+ break;
+ // type parameters
+ case CLASS_TYPE_PARAMETER:
+ case METHOD_TYPE_PARAMETER:
+ out.writeByte(p.parameter_index);
+ break;
+ // type parameters bounds
+ case CLASS_TYPE_PARAMETER_BOUND:
+ case METHOD_TYPE_PARAMETER_BOUND:
+ out.writeByte(p.parameter_index);
+ out.writeByte(p.bound_index);
+ break;
+ // class extends or implements clause
+ case CLASS_EXTENDS:
+ out.writeShort(p.type_index);
+ break;
+ // throws
+ case THROWS:
+ out.writeShort(p.type_index);
+ break;
+ // method parameter
+ case METHOD_FORMAL_PARAMETER:
+ out.writeByte(p.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:
+ out.writeShort(p.offset);
+ out.writeByte(p.type_index);
+ break;
+ // We don't need to worry about these
+ case METHOD_RETURN:
+ case FIELD:
+ break;
+ case UNKNOWN:
+ throw new AssertionError("ClassWriter: UNKNOWN target type should never occur!");
+ default:
+ throw new AssertionError("ClassWriter: Unknown target type for position: " + p);
+ }
+
+ { // Append location data for generics/arrays.
+ // TODO: check for overrun?
+ out.writeByte((byte)p.location.size());
+ for (int i : TypeAnnotation.Position.getBinaryFromTypePath(p.location))
+ out.writeByte((byte)i);
+ }
+ }
+ }
+}