--- /dev/null
+/*
+ * Copyright 2003-2005 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.reflect.annotation;
+
+import java.lang.annotation.*;
+import java.util.*;
+import java.nio.ByteBuffer;
+import java.nio.BufferUnderflowException;
+import java.lang.reflect.*;
+import sun.reflect.ConstantPool;
+
+import sun.reflect.generics.parser.SignatureFormatError;
+import sun.reflect.generics.parser.SignatureParser;
+
+/*
+import sun.reflect.generics.tree.TypeSignature;
+import sun.reflect.generics.factory.GenericsFactory;
+import sun.reflect.generics.factory.CoreReflectionFactory;
+import sun.reflect.generics.visitor.Reifier;
+import sun.reflect.generics.scope.ClassScope;
+*/
+
+/**
+ * Parser for Java programming language annotations. Translates
+ * annotation byte streams emitted by compiler into annotation objects.
+ *
+ * @author Josh Bloch
+ * @since 1.5
+ */
+public class AnnotationParser {
+ /**
+ * Parses the annotations described by the specified byte array.
+ * resolving constant references in the specified constant pool.
+ * The array must contain an array of annotations as described
+ * in the RuntimeVisibleAnnotations_attribute:
+ *
+ * u2 num_annotations;
+ * annotation annotations[num_annotations];
+ *
+ * @throws AnnotationFormatError if an annotation is found to be
+ * malformed.
+ */
+ public static Map<Class, Annotation> parseAnnotations(
+ byte[] rawAnnotations,
+ ConstantPool constPool,
+ Class container) {
+ if (rawAnnotations == null)
+ return Collections.emptyMap();
+
+ try {
+ return parseAnnotations2(rawAnnotations, constPool, container);
+ } catch(BufferUnderflowException e) {
+ throw new AnnotationFormatError("Unexpected end of annotations.");
+ } catch(IllegalArgumentException e) {
+ // Type mismatch in constant pool
+ throw new AnnotationFormatError(e);
+ }
+ }
+
+ /**
+ * Parses the annotations described by the specified byte array.
+ * But return Annotation[] so I don't have to do this in C.
+ * @author Mathias Panzenböck
+ */
+ public static Annotation[] parseAnnotationsIntoArray(
+ byte[] rawAnnotations,
+ ConstantPool constPool,
+ Class container) {
+ Map<Class, Annotation> annotations = parseAnnotations(rawAnnotations, constPool, container);
+ Annotation[] result = new Annotation[annotations.size()];
+ int i = 0;
+
+ for (Annotation annotation : annotations.values()) {
+ result[i] = annotation;
+ ++ i;
+ }
+
+ return result;
+ }
+
+ private static Map<Class, Annotation> parseAnnotations2(
+ byte[] rawAnnotations,
+ ConstantPool constPool,
+ Class container) {
+ Map<Class, Annotation> result = new LinkedHashMap<Class, Annotation>();
+ ByteBuffer buf = ByteBuffer.wrap(rawAnnotations);
+ int numAnnotations = buf.getShort() & 0xFFFF;
+ for (int i = 0; i < numAnnotations; i++) {
+ Annotation a = parseAnnotation(buf, constPool, container, false);
+ if (a != null) {
+ Class klass = a.annotationType();
+ AnnotationType type = AnnotationType.getInstance(klass);
+ if (type.retention() == RetentionPolicy.RUNTIME)
+ if (result.put(klass, a) != null)
+ throw new AnnotationFormatError(
+ "Duplicate annotation for class: "+klass+": " + a);
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Parses the parameter annotations described by the specified byte array.
+ * resolving constant references in the specified constant pool.
+ * The array must contain an array of annotations as described
+ * in the RuntimeVisibleParameterAnnotations_attribute:
+ *
+ * u1 num_parameters;
+ * {
+ * u2 num_annotations;
+ * annotation annotations[num_annotations];
+ * } parameter_annotations[num_parameters];
+ *
+ * Unlike parseAnnotations, rawAnnotations must not be null!
+ * A null value must be handled by the caller. This is so because
+ * we cannot determine the number of parameters if rawAnnotations
+ * is null. Also, the caller should check that the number
+ * of parameters indicated by the return value of this method
+ * matches the actual number of method parameters. A mismatch
+ * indicates that an AnnotationFormatError should be thrown.
+ *
+ * @throws AnnotationFormatError if an annotation is found to be
+ * malformed.
+ */
+ public static Annotation[][] parseParameterAnnotations(
+ byte[] rawAnnotations,
+ ConstantPool constPool,
+ Class container) {
+ try {
+ return parseParameterAnnotations2(rawAnnotations, constPool, container);
+ } catch(BufferUnderflowException e) {
+ throw new AnnotationFormatError(
+ "Unexpected end of parameter annotations.");
+ } catch(IllegalArgumentException e) {
+ // Type mismatch in constant pool
+ throw new AnnotationFormatError(e);
+ }
+ }
+
+ private static Annotation[][] parseParameterAnnotations2(
+ byte[] rawAnnotations,
+ ConstantPool constPool,
+ Class container) {
+ ByteBuffer buf = ByteBuffer.wrap(rawAnnotations);
+ int numParameters = buf.get() & 0xFF;
+ Annotation[][] result = new Annotation[numParameters][];
+
+ for (int i = 0; i < numParameters; i++) {
+ int numAnnotations = buf.getShort() & 0xFFFF;
+ List<Annotation> annotations =
+ new ArrayList<Annotation>(numAnnotations);
+ for (int j = 0; j < numAnnotations; j++) {
+ Annotation a = parseAnnotation(buf, constPool, container, false);
+ if (a != null) {
+ AnnotationType type = AnnotationType.getInstance(
+ a.annotationType());
+ if (type.retention() == RetentionPolicy.RUNTIME)
+ annotations.add(a);
+ }
+ }
+ result[i] = annotations.toArray(EMPTY_ANNOTATIONS_ARRAY);
+ }
+ return result;
+ }
+
+ private static final Annotation[] EMPTY_ANNOTATIONS_ARRAY =
+ new Annotation[0];
+
+ /**
+ * Parses the annotation at the current position in the specified
+ * byte buffer, resolving constant references in the specified constant
+ * pool. The cursor of the byte buffer must point to an "annotation
+ * structure" as described in the RuntimeVisibleAnnotations_attribute:
+ *
+ * annotation {
+ * u2 type_index;
+ * u2 num_member_value_pairs;
+ * { u2 member_name_index;
+ * member_value value;
+ * } member_value_pairs[num_member_value_pairs];
+ * }
+ * }
+ *
+ * Returns the annotation, or null if the annotation's type cannot
+ * be found by the VM, or is not a valid annotation type.
+ *
+ * @param exceptionOnMissingAnnotationClass if true, throw
+ * TypeNotPresentException if a referenced annotation type is not
+ * available at runtime
+ */
+ private static Annotation parseAnnotation(ByteBuffer buf,
+ ConstantPool constPool,
+ Class container,
+ boolean exceptionOnMissingAnnotationClass) {
+ int typeIndex = buf.getShort() & 0xFFFF;
+ Class annotationClass = null;
+ String sig = "[unknown]";
+ try {
+ try {
+ sig = constPool.getUTF8At(typeIndex);
+ annotationClass = parseSig(sig, container);
+ } catch (IllegalArgumentException ex) {
+ // support obsolete early jsr175 format class files
+ annotationClass = constPool.getClassAt(typeIndex);
+ }
+ } catch (NoClassDefFoundError e) {
+ if (exceptionOnMissingAnnotationClass)
+ // note: at this point sig is "[unknown]" or VM-style
+ // name instead of a binary name
+ throw new TypeNotPresentException(sig, e);
+ skipAnnotation(buf, false);
+ return null;
+ }
+ catch (TypeNotPresentException e) {
+ if (exceptionOnMissingAnnotationClass)
+ throw e;
+ skipAnnotation(buf, false);
+ return null;
+ }
+ AnnotationType type = null;
+ try {
+ type = AnnotationType.getInstance(annotationClass);
+ } catch (IllegalArgumentException e) {
+ skipAnnotation(buf, false);
+ return null;
+ }
+
+ Map<String, Class> memberTypes = type.memberTypes();
+ Map<String, Object> memberValues =
+ new LinkedHashMap<String, Object>(type.memberDefaults());
+
+ int numMembers = buf.getShort() & 0xFFFF;
+ for (int i = 0; i < numMembers; i++) {
+ int memberNameIndex = buf.getShort() & 0xFFFF;
+ String memberName = constPool.getUTF8At(memberNameIndex);
+ Class memberType = memberTypes.get(memberName);
+
+ if (memberType == null) {
+ // Member is no longer present in annotation type; ignore it
+ skipMemberValue(buf);
+ } else {
+ Object value = parseMemberValue(memberType, buf, constPool, container);
+ if (value instanceof AnnotationTypeMismatchExceptionProxy)
+ ((AnnotationTypeMismatchExceptionProxy) value).
+ setMember(type.members().get(memberName));
+ memberValues.put(memberName, value);
+ }
+ }
+ return annotationForMap(annotationClass, memberValues);
+ }
+
+ /**
+ * Returns an annotation of the given type backed by the given
+ * member -> value map.
+ */
+ public static Annotation annotationForMap(
+ Class type, Map<String, Object> memberValues)
+ {
+ return (Annotation) Proxy.newProxyInstance(
+ type.getClassLoader(), new Class[] { type },
+ new AnnotationInvocationHandler(type, memberValues));
+ }
+
+ /**
+ * Parses the annotation default value of the supplied method.
+ * This method is basically copied from
+ * java.lang.reflect.Method.getAnnotationDefault()
+ *
+ * @author Mathias Panzenböck
+ */
+ public static Object parseAnnotationDefault(Method method,
+ byte[] annotationDefault,
+ ConstantPool constPool,
+ Class container) {
+ if (annotationDefault == null)
+ return null;
+ Class memberType = AnnotationType.invocationHandlerReturnType(
+ method.getReturnType());
+ Object result = AnnotationParser.parseMemberValue(
+ memberType, ByteBuffer.wrap(annotationDefault),
+ constPool, container);
+ if (result instanceof sun.reflect.annotation.ExceptionProxy)
+ throw new AnnotationFormatError("Invalid default: " + method);
+ return result;
+ }
+
+ /**
+ * Parses the annotation member value at the current position in the
+ * specified byte buffer, resolving constant references in the specified
+ * constant pool. The cursor of the byte buffer must point to a
+ * "member_value structure" as described in the
+ * RuntimeVisibleAnnotations_attribute:
+ *
+ * member_value {
+ * u1 tag;
+ * union {
+ * u2 const_value_index;
+ * {
+ * u2 type_name_index;
+ * u2 const_name_index;
+ * } enum_const_value;
+ * u2 class_info_index;
+ * annotation annotation_value;
+ * {
+ * u2 num_values;
+ * member_value values[num_values];
+ * } array_value;
+ * } value;
+ * }
+ *
+ * The member must be of the indicated type. If it is not, this
+ * method returns an AnnotationTypeMismatchExceptionProxy.
+ */
+ public static Object parseMemberValue(Class memberType, ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ Object result = null;
+ int tag = buf.get();
+ switch(tag) {
+ case 'e':
+ return parseEnumValue(memberType, buf, constPool, container);
+ case 'c':
+ result = parseClassValue(buf, constPool, container);
+ break;
+ case '@':
+ result = parseAnnotation(buf, constPool, container, true);
+ break;
+ case '[':
+ return parseArray(memberType, buf, constPool, container);
+ default:
+ result = parseConst(tag, buf, constPool);
+ }
+
+ if (!(result instanceof ExceptionProxy) &&
+ !memberType.isInstance(result))
+ result = new AnnotationTypeMismatchExceptionProxy(
+ result.getClass() + "[" + result + "]");
+ return result;
+ }
+
+ /**
+ * Parses the primitive or String annotation member value indicated by
+ * the specified tag byte at the current position in the specified byte
+ * buffer, resolving constant reference in the specified constant pool.
+ * The cursor of the byte buffer must point to an annotation member value
+ * of the type indicated by the specified tag, as described in the
+ * RuntimeVisibleAnnotations_attribute:
+ *
+ * u2 const_value_index;
+ */
+ private static Object parseConst(int tag,
+ ByteBuffer buf, ConstantPool constPool) {
+ int constIndex = buf.getShort() & 0xFFFF;
+ switch(tag) {
+ case 'B':
+ return Byte.valueOf((byte) constPool.getIntAt(constIndex));
+ case 'C':
+ return Character.valueOf((char) constPool.getIntAt(constIndex));
+ case 'D':
+ return Double.valueOf(constPool.getDoubleAt(constIndex));
+ case 'F':
+ return Float.valueOf(constPool.getFloatAt(constIndex));
+ case 'I':
+ return Integer.valueOf(constPool.getIntAt(constIndex));
+ case 'J':
+ return Long.valueOf(constPool.getLongAt(constIndex));
+ case 'S':
+ return Short.valueOf((short) constPool.getIntAt(constIndex));
+ case 'Z':
+ return Boolean.valueOf(constPool.getIntAt(constIndex) != 0);
+ case 's':
+ return constPool.getUTF8At(constIndex);
+ default:
+ throw new AnnotationFormatError(
+ "Invalid member-value tag in annotation: " + tag);
+ }
+ }
+
+ /**
+ * Parses the Class member value at the current position in the
+ * specified byte buffer, resolving constant references in the specified
+ * constant pool. The cursor of the byte buffer must point to a "class
+ * info index" as described in the RuntimeVisibleAnnotations_attribute:
+ *
+ * u2 class_info_index;
+ */
+ private static Object parseClassValue(ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ int classIndex = buf.getShort() & 0xFFFF;
+ try {
+ try {
+ String sig = constPool.getUTF8At(classIndex);
+ return parseSig(sig, container);
+ } catch (IllegalArgumentException ex) {
+ // support obsolete early jsr175 format class files
+ return constPool.getClassAt(classIndex);
+ }
+ } catch (NoClassDefFoundError e) {
+ return new TypeNotPresentExceptionProxy("[unknown]", e);
+ }
+ catch (TypeNotPresentException e) {
+ return new TypeNotPresentExceptionProxy(e.typeName(), e.getCause());
+ }
+ }
+
+ private static Class<?> parseSig(String sig, Class container) {
+ try {
+ return new SignatureParser(sig, container.getClassLoader()).getType();
+ }
+ catch(SignatureFormatError e) {
+ throw new AnnotationFormatError(
+ "Invalid type siganture in annotation: " + sig, e);
+ }
+ catch(ClassNotFoundException e) {
+ throw new AnnotationFormatError(
+ "Class described by this type siganture was not found: " + sig, e);
+ }
+ }
+
+ /*
+ private static Class<?> parseSig(String sig, Class container) {
+ if (sig.equals("V")) return void.class;
+ SignatureParser parser = SignatureParser.make();
+ TypeSignature typeSig = parser.parseTypeSig(sig);
+ GenericsFactory factory = CoreReflectionFactory.make(container, ClassScope.make(container));
+ Reifier reify = Reifier.make(factory);
+ typeSig.accept(reify);
+ Type result = reify.getResult();
+ return toClass(result);
+ }
+ static Class toClass(Type o) {
+ if (o instanceof GenericArrayType)
+ return Array.newInstance(toClass(((GenericArrayType)o).getGenericComponentType()),
+ 0)
+ .getClass();
+ return (Class)o;
+ }
+ */
+
+ /**
+ * Parses the enum constant member value at the current position in the
+ * specified byte buffer, resolving constant references in the specified
+ * constant pool. The cursor of the byte buffer must point to a
+ * "enum_const_value structure" as described in the
+ * RuntimeVisibleAnnotations_attribute:
+ *
+ * {
+ * u2 type_name_index;
+ * u2 const_name_index;
+ * } enum_const_value;
+ */
+ private static Object parseEnumValue(Class enumType, ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ int typeNameIndex = buf.getShort() & 0xFFFF;
+ String typeName = constPool.getUTF8At(typeNameIndex);
+ int constNameIndex = buf.getShort() & 0xFFFF;
+ String constName = constPool.getUTF8At(constNameIndex);
+
+ if (!typeName.endsWith(";")) {
+ // support now-obsolete early jsr175-format class files.
+ if (!enumType.getName().equals(typeName))
+ return new AnnotationTypeMismatchExceptionProxy(
+ typeName + "." + constName);
+ } else if (enumType != parseSig(typeName, container)) {
+ return new AnnotationTypeMismatchExceptionProxy(
+ typeName + "." + constName);
+ }
+
+ try {
+ return Enum.valueOf(enumType, constName);
+ } catch(IllegalArgumentException e) {
+ return new EnumConstantNotPresentExceptionProxy(
+ (Class<? extends Enum>)enumType, constName);
+ }
+ }
+
+ /**
+ * Parses the array value at the current position in the specified byte
+ * buffer, resolving constant references in the specified constant pool.
+ * The cursor of the byte buffer must point to an array value struct
+ * as specified in the RuntimeVisibleAnnotations_attribute:
+ *
+ * {
+ * u2 num_values;
+ * member_value values[num_values];
+ * } array_value;
+ *
+ * If the array values do not match arrayType, an
+ * AnnotationTypeMismatchExceptionProxy will be returned.
+ */
+ private static Object parseArray(Class arrayType,
+ ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ int length = buf.getShort() & 0xFFFF; // Number of array components
+ Class componentType = arrayType.getComponentType();
+
+ if (componentType == byte.class) {
+ return parseByteArray(length, buf, constPool);
+ } else if (componentType == char.class) {
+ return parseCharArray(length, buf, constPool);
+ } else if (componentType == double.class) {
+ return parseDoubleArray(length, buf, constPool);
+ } else if (componentType == float.class) {
+ return parseFloatArray(length, buf, constPool);
+ } else if (componentType == int.class) {
+ return parseIntArray(length, buf, constPool);
+ } else if (componentType == long.class) {
+ return parseLongArray(length, buf, constPool);
+ } else if (componentType == short.class) {
+ return parseShortArray(length, buf, constPool);
+ } else if (componentType == boolean.class) {
+ return parseBooleanArray(length, buf, constPool);
+ } else if (componentType == String.class) {
+ return parseStringArray(length, buf, constPool);
+ } else if (componentType == Class.class) {
+ return parseClassArray(length, buf, constPool, container);
+ } else if (componentType.isEnum()) {
+ return parseEnumArray(length, componentType, buf,
+ constPool, container);
+ } else {
+ assert componentType.isAnnotation();
+ return parseAnnotationArray(length, componentType, buf,
+ constPool, container);
+ }
+ }
+
+ private static Object parseByteArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ byte[] result = new byte[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'B') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = (byte) constPool.getIntAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseCharArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ char[] result = new char[length];
+ boolean typeMismatch = false;
+ byte tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'C') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = (char) constPool.getIntAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseDoubleArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ double[] result = new double[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'D') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = constPool.getDoubleAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseFloatArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ float[] result = new float[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'F') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = constPool.getFloatAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseIntArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ int[] result = new int[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'I') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = constPool.getIntAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseLongArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ long[] result = new long[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'J') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = constPool.getLongAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseShortArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ short[] result = new short[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'S') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = (short) constPool.getIntAt(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseBooleanArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ boolean[] result = new boolean[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'Z') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = (constPool.getIntAt(index) != 0);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseStringArray(int length,
+ ByteBuffer buf, ConstantPool constPool) {
+ String[] result = new String[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 's') {
+ int index = buf.getShort() & 0xFFFF;
+ result[i] = constPool.getUTF8At(index);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseClassArray(int length,
+ ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ Object[] result = new Class[length];
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'c') {
+ result[i] = parseClassValue(buf, constPool, container);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseEnumArray(int length, Class enumType,
+ ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ Object[] result = (Object[]) Array.newInstance(enumType, length);
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == 'e') {
+ result[i] = parseEnumValue(enumType, buf, constPool, container);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ private static Object parseAnnotationArray(int length,
+ Class annotationType,
+ ByteBuffer buf,
+ ConstantPool constPool,
+ Class container) {
+ Object[] result = (Object[]) Array.newInstance(annotationType, length);
+ boolean typeMismatch = false;
+ int tag = 0;
+
+ for (int i = 0; i < length; i++) {
+ tag = buf.get();
+ if (tag == '@') {
+ result[i] = parseAnnotation(buf, constPool, container, true);
+ } else {
+ skipMemberValue(tag, buf);
+ typeMismatch = true;
+ }
+ }
+ return typeMismatch ? exceptionProxy(tag) : result;
+ }
+
+ /**
+ * Return an appropriate exception proxy for a mismatching array
+ * annotation where the erroneous array has the specified tag.
+ */
+ private static ExceptionProxy exceptionProxy(int tag) {
+ return new AnnotationTypeMismatchExceptionProxy(
+ "Array with component tag: " + tag);
+ }
+
+ /**
+ * Skips the annotation at the current position in the specified
+ * byte buffer. The cursor of the byte buffer must point to
+ * an "annotation structure" OR two bytes into an annotation
+ * structure (i.e., after the type index).
+ *
+ * @parameter complete true if the byte buffer points to the beginning
+ * of an annotation structure (rather than two bytes in).
+ */
+ private static void skipAnnotation(ByteBuffer buf, boolean complete) {
+ if (complete)
+ buf.getShort(); // Skip type index
+ int numMembers = buf.getShort() & 0xFFFF;
+ for (int i = 0; i < numMembers; i++) {
+ buf.getShort(); // Skip memberNameIndex
+ skipMemberValue(buf);
+ }
+ }
+
+ /**
+ * Skips the annotation member value at the current position in the
+ * specified byte buffer. The cursor of the byte buffer must point to a
+ * "member_value structure."
+ */
+ private static void skipMemberValue(ByteBuffer buf) {
+ int tag = buf.get();
+ skipMemberValue(tag, buf);
+ }
+
+ /**
+ * Skips the annotation member value at the current position in the
+ * specified byte buffer. The cursor of the byte buffer must point
+ * immediately after the tag in a "member_value structure."
+ */
+ private static void skipMemberValue(int tag, ByteBuffer buf) {
+ switch(tag) {
+ case 'e': // Enum value
+ buf.getInt(); // (Two shorts, actually.)
+ break;
+ case '@':
+ skipAnnotation(buf, true);
+ break;
+ case '[':
+ skipArray(buf);
+ break;
+ default:
+ // Class, primitive, or String
+ buf.getShort();
+ }
+ }
+
+ /**
+ * Skips the array value at the current position in the specified byte
+ * buffer. The cursor of the byte buffer must point to an array value
+ * struct.
+ */
+ private static void skipArray(ByteBuffer buf) {
+ int length = buf.getShort() & 0xFFFF;
+ for (int i = 0; i < length; i++)
+ skipMemberValue(buf);
+ }
+}
projects / cacao.git / blobdiff