/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.java.decompiler.struct.attr;
import org.jetbrains.java.decompiler.modules.decompiler.exps.AnnotationExprent;
import org.jetbrains.java.decompiler.struct.consts.ConstantPool;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class StructAnnotationTypeAttribute extends StructGeneralAttribute {
private static final int ANNOTATION_TARGET_TYPE_GENERIC_CLASS = 0x00;
private static final int ANNOTATION_TARGET_TYPE_GENERIC_METHOD = 0x01;
private static final int ANNOTATION_TARGET_TYPE_EXTENDS_IMPLEMENTS = 0x10;
private static final int ANNOTATION_TARGET_TYPE_GENERIC_CLASS_BOUND = 0x11;
private static final int ANNOTATION_TARGET_TYPE_GENERIC_METHOD_BOUND = 0x12;
private static final int ANNOTATION_TARGET_TYPE_FIELD = 0x13;
private static final int ANNOTATION_TARGET_TYPE_RETURN = 0x14;
private static final int ANNOTATION_TARGET_TYPE_RECEIVER = 0x15;
private static final int ANNOTATION_TARGET_TYPE_FORMAL = 0x16;
private static final int ANNOTATION_TARGET_TYPE_THROWS = 0x17;
private static final int ANNOTATION_TARGET_TYPE_LOCAL_VARIABLE = 0x40;
private static final int ANNOTATION_TARGET_TYPE_RESOURCE_VARIABLE = 0x41;
private static final int ANNOTATION_TARGET_TYPE_EXCEPTION = 0x42;
private static final int ANNOTATION_TARGET_TYPE_INSTANCEOF = 0x43;
private static final int ANNOTATION_TARGET_TYPE_NEW = 0x44;
private static final int ANNOTATION_TARGET_TYPE_DOUBLE_COLON_NEW = 0x45;
private static final int ANNOTATION_TARGET_TYPE_DOUBLE_COLON_ID = 0x46;
private static final int ANNOTATION_TARGET_TYPE_CAST = 0x47;
private static final int ANNOTATION_TARGET_TYPE_INVOCATION_CONSTRUCTOR = 0x48;
private static final int ANNOTATION_TARGET_TYPE_INVOCATION_METHOD = 0x49;
private static final int ANNOTATION_TARGET_TYPE_GENERIC_DOUBLE_COLON_NEW = 0x4A;
private static final int ANNOTATION_TARGET_TYPE_GENERIC_DOUBLE_COLON_ID = 0x4B;
private static final int ANNOTATION_TARGET_UNION_TYPE_PARAMETER = 1;
private static final int ANNOTATION_TARGET_UNION_SUPERTYPE = 2;
private static final int ANNOTATION_TARGET_UNION_TYPE_PARAMETER_BOUND = 3;
private static final int ANNOTATION_TARGET_UNION_EMPTY = 4;
private static final int ANNOTATION_TARGET_UNION_FORMAL_PARAMETER = 5;
private static final int ANNOTATION_TARGET_UNION_THROWS = 6;
private static final int ANNOTATION_TARGET_UNION_LOCAL_VAR = 7;
private static final int ANNOTATION_TARGET_UNION_CATCH = 8;
private static final int ANNOTATION_TARGET_UNION_OFFSET = 9;
private static final int ANNOTATION_TARGET_UNION_TYPE_ARGUMENT = 10;
@SuppressWarnings("FieldCanBeLocal") private List<AnnotationLocation> locations;
@SuppressWarnings("FieldCanBeLocal") private List<AnnotationExprent> annotations;
@Override
public void initContent(ConstantPool pool) throws IOException {
DataInputStream data = stream();
int len = data.readUnsignedByte();
if (len > 0) {
locations = new ArrayList<AnnotationLocation>(len);
annotations = new ArrayList<AnnotationExprent>(len);
for (int i = 0; i < len; i++) {
locations.add(parseAnnotationLocation(data));
annotations.add(StructAnnotationAttribute.parseAnnotation(data, pool));
}
}
else {
locations = Collections.emptyList();
annotations = Collections.emptyList();
}
}
private static AnnotationLocation parseAnnotationLocation(DataInputStream data) throws IOException {
AnnotationLocation ann_location = new AnnotationLocation();
// target type
ann_location.target_type = data.readUnsignedByte();
// target union
switch (ann_location.target_type) {
case ANNOTATION_TARGET_TYPE_GENERIC_CLASS:
case ANNOTATION_TARGET_TYPE_GENERIC_METHOD:
ann_location.target_union = ANNOTATION_TARGET_UNION_TYPE_PARAMETER;
break;
case ANNOTATION_TARGET_TYPE_EXTENDS_IMPLEMENTS:
ann_location.target_union = ANNOTATION_TARGET_UNION_SUPERTYPE;
break;
case ANNOTATION_TARGET_TYPE_GENERIC_CLASS_BOUND:
case ANNOTATION_TARGET_TYPE_GENERIC_METHOD_BOUND:
ann_location.target_union = ANNOTATION_TARGET_UNION_TYPE_PARAMETER_BOUND;
break;
case ANNOTATION_TARGET_TYPE_FIELD:
case ANNOTATION_TARGET_TYPE_RETURN:
case ANNOTATION_TARGET_TYPE_RECEIVER:
ann_location.target_union = ANNOTATION_TARGET_UNION_EMPTY;
break;
case ANNOTATION_TARGET_TYPE_FORMAL:
ann_location.target_union = ANNOTATION_TARGET_UNION_FORMAL_PARAMETER;
break;
case ANNOTATION_TARGET_TYPE_THROWS:
ann_location.target_union = ANNOTATION_TARGET_UNION_THROWS;
break;
case ANNOTATION_TARGET_TYPE_LOCAL_VARIABLE:
case ANNOTATION_TARGET_TYPE_RESOURCE_VARIABLE:
ann_location.target_union = ANNOTATION_TARGET_UNION_LOCAL_VAR;
break;
case ANNOTATION_TARGET_TYPE_EXCEPTION:
ann_location.target_union = ANNOTATION_TARGET_UNION_CATCH;
break;
case ANNOTATION_TARGET_TYPE_INSTANCEOF:
case ANNOTATION_TARGET_TYPE_NEW:
case ANNOTATION_TARGET_TYPE_DOUBLE_COLON_NEW:
case ANNOTATION_TARGET_TYPE_DOUBLE_COLON_ID:
ann_location.target_union = ANNOTATION_TARGET_UNION_OFFSET;
break;
case ANNOTATION_TARGET_TYPE_CAST:
case ANNOTATION_TARGET_TYPE_INVOCATION_CONSTRUCTOR:
case ANNOTATION_TARGET_TYPE_INVOCATION_METHOD:
case ANNOTATION_TARGET_TYPE_GENERIC_DOUBLE_COLON_NEW:
case ANNOTATION_TARGET_TYPE_GENERIC_DOUBLE_COLON_ID:
ann_location.target_union = ANNOTATION_TARGET_UNION_TYPE_ARGUMENT;
break;
default:
throw new RuntimeException("Unknown target type in a type annotation!");
}
// target union data
switch (ann_location.target_union) {
case ANNOTATION_TARGET_UNION_TYPE_PARAMETER:
case ANNOTATION_TARGET_UNION_FORMAL_PARAMETER:
ann_location.data = new int[]{data.readUnsignedByte()};
break;
case ANNOTATION_TARGET_UNION_SUPERTYPE:
case ANNOTATION_TARGET_UNION_THROWS:
case ANNOTATION_TARGET_UNION_CATCH:
case ANNOTATION_TARGET_UNION_OFFSET:
ann_location.data = new int[]{data.readUnsignedShort()};
break;
case ANNOTATION_TARGET_UNION_TYPE_PARAMETER_BOUND:
ann_location.data = new int[]{data.readUnsignedByte(), data.readUnsignedByte()};
break;
case ANNOTATION_TARGET_UNION_EMPTY:
break;
case ANNOTATION_TARGET_UNION_LOCAL_VAR:
int table_length = data.readUnsignedShort();
ann_location.data = new int[table_length * 3 + 1];
ann_location.data[0] = table_length;
for (int i = 0; i < table_length; ++i) {
ann_location.data[3 * i + 1] = data.readUnsignedShort();
ann_location.data[3 * i + 2] = data.readUnsignedShort();
ann_location.data[3 * i + 3] = data.readUnsignedShort();
}
break;
case ANNOTATION_TARGET_UNION_TYPE_ARGUMENT:
ann_location.data = new int[]{data.readUnsignedShort(), data.readUnsignedByte()};
}
// target path
int path_length = data.readUnsignedByte();
ann_location.target_path_kind = new int[path_length];
ann_location.target_argument_index = new int[path_length];
for (int i = 0; i < path_length; ++i) {
ann_location.target_path_kind[i] = data.readUnsignedByte();
ann_location.target_argument_index[i] = data.readUnsignedByte();
}
return ann_location;
}
private static class AnnotationLocation {
public int target_type;
public int target_union;
public int[] data;
public int[] target_path_kind;
public int[] target_argument_index;
}
}