ByteCatchList.java revision f6c387128427e121477c1b32ad35cdcaa5101ba3
1f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 2f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 4f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * you may not use this file except in compliance with the License. 6f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * You may obtain a copy of the License at 7f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 8f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 10f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * See the License for the specific language governing permissions and 14f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * limitations under the License. 15f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 16f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 17f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpackage com.android.dx.cf.code; 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.cst.CstType; 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.type.StdTypeList; 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.type.TypeList; 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.util.FixedSizeList; 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.util.IntList; 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 25f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * List of catch entries, that is, the elements of an "exception table," 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * which is part of a standard <code>Code</code> attribute. 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic final class ByteCatchList extends FixedSizeList { 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** non-null; convenient zero-entry instance */ 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public static final ByteCatchList EMPTY = new ByteCatchList(0); 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs an instance. 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param count the number of elements to be in the table 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public ByteCatchList(int count) { 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project super(count); 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the total length of this structure in bytes, when included in 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * a <code>Code</code> attribute. The returned value includes the 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * two bytes for <code>exception_table_length</code>. 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return >= 2; the total length, in bytes 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int byteLength() { 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 2 + size() * 8; 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the indicated item. 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param n >= 0; which item 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return null-ok; the indicated item 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public Item get(int n) { 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (Item) get0(n); 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Sets the item at the given index. 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param n >= 0, < size(); which entry to set 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param item non-null; the item 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public void set(int n, Item item) { 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (item == null) { 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new NullPointerException("item == null"); 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project set0(n, item); 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Sets the item at the given index. 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param n >= 0, < size(); which entry to set 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param startPc >= 0; the start pc (inclusive) of the handler's range 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param endPc >= startPc; the end pc (exclusive) of the 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * handler's range 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param handlerPc >= 0; the pc of the exception handler 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param exceptionClass null-ok; the exception class or 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>null</code> to catch all exceptions with this handler 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public void set(int n, int startPc, int endPc, int handlerPc, 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project CstType exceptionClass) { 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project set0(n, new Item(startPc, endPc, handlerPc, exceptionClass)); 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the list of items active at the given address. The result is 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * automatically made immutable. 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param pc which address 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return non-null; list of exception handlers active at 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>pc</code> 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public ByteCatchList listFor(int pc) { 102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int sz = size(); 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Item[] resultArr = new Item[sz]; 104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int resultSz = 0; 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (int i = 0; i < sz; i++) { 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Item one = get(i); 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (one.covers(pc) && typeNotFound(one, resultArr, resultSz)) { 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project resultArr[resultSz] = one; 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project resultSz++; 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (resultSz == 0) { 115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return EMPTY; 116f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 117f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 118f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ByteCatchList result = new ByteCatchList(resultSz); 119f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (int i = 0; i < resultSz; i++) { 120f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.set(i, resultArr[i]); 121f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 122f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 123f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.setImmutable(); 124f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 125f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 126f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 127f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 128f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Helper method for {@link #listFor}, which tells whether a match 129f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * is <i>not</i> found for the exception type of the given item in 130f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the given array. A match is considered to be either an exact type 131f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * match or the class <code>Object</code> which represents a catch-all. 132f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 133f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param item non-null; item with the exception type to look for 134f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param arr non-null; array to search in 135f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param count non-null; maximum number of elements in the array to check 136f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return <code>true</code> iff the exception type is <i>not</i> found 137f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 138f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private static boolean typeNotFound(Item item, Item[] arr, int count) { 139f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project CstType type = item.getExceptionClass(); 140f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 141f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (int i = 0; i < count; i++) { 142f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project CstType one = arr[i].getExceptionClass(); 143f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if ((one == type) || (one == CstType.OBJECT)) { 144f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 145f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 146f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 147f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 148f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return true; 149f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 150f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 151f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 152f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns a target list corresponding to this instance. The result 153f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * is a list of all the exception handler addresses, with the given 154f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>noException</code> address appended if appropriate. The 155f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * result is automatically made immutable. 156f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 157f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param noException >= -1; the no-exception address to append, or 158f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>-1</code> not to append anything 159f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return non-null; list of exception targets, with 160f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>noException</code> appended if necessary 161f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 162f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public IntList toTargetList(int noException) { 163f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (noException < -1) { 164f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException("noException < -1"); 165f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 166f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 167f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project boolean hasDefault = (noException >= 0); 168f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int sz = size(); 169f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 170f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (sz == 0) { 171f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (hasDefault) { 172f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 173f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The list is empty, but there is a no-exception 174f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * address; so, the result is just that address. 175f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 176f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return IntList.makeImmutable(noException); 177f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 178f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 179f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The list is empty and there isn't even a no-exception 180f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * address. 181f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 182f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return IntList.EMPTY; 183f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 184f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 185f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project IntList result = new IntList(sz + (hasDefault ? 1 : 0)); 186f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 187f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (int i = 0; i < sz; i++) { 188f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.add(get(i).getHandlerPc()); 189f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 190f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 191f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (hasDefault) { 192f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.add(noException); 193f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 194f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 195f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.setImmutable(); 196f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 197f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 198f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 199f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 200f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns a rop-style catches list equivalent to this one. 201f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 202f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return non-null; the converted instance 203f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 204f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public TypeList toRopCatchList() { 205f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int sz = size(); 206f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (sz == 0) { 207f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return StdTypeList.EMPTY; 208f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 209f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 210f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StdTypeList result = new StdTypeList(sz); 211f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 212f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (int i = 0; i < sz; i++) { 213f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.set(i, get(i).getExceptionClass().getClassType()); 214f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 215f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 216f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result.setImmutable(); 217f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 218f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 219f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 220f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 221f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Item in an exception handler list. 222f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 223f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public static class Item { 224f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** >= 0; the start pc (inclusive) of the handler's range */ 225f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final int startPc; 226f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 227f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** >= startPc; the end pc (exclusive) of the handler's range */ 228f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final int endPc; 229f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 230f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** >= 0; the pc of the exception handler */ 231f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final int handlerPc; 232f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 233f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** null-ok; the exception class or <code>null</code> to catch all 234f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * exceptions with this handler */ 235f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final CstType exceptionClass; 236f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 237f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 238f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs an instance. 239f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 240f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param startPc >= 0; the start pc (inclusive) of the 241f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * handler's range 242f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param endPc >= startPc; the end pc (exclusive) of the 243f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * handler's range 244f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param handlerPc >= 0; the pc of the exception handler 245f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param exceptionClass null-ok; the exception class or 246f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>null</code> to catch all exceptions with this handler 247f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 248f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public Item(int startPc, int endPc, int handlerPc, 249f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project CstType exceptionClass) { 250f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (startPc < 0) { 251f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException("startPc < 0"); 252f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 253f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 254f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (endPc < startPc) { 255f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException("endPc < startPc"); 256f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 257f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 258f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (handlerPc < 0) { 259f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException("handlerPc < 0"); 260f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 261f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 262f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.startPc = startPc; 263f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.endPc = endPc; 264f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.handlerPc = handlerPc; 265f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.exceptionClass = exceptionClass; 266f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 267f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 268f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 269f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the start pc (inclusive) of the handler's range. 270f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 271f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return >= 0; the start pc (inclusive) of the handler's range. 272f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 273f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int getStartPc() { 274f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return startPc; 275f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 276f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 277f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 278f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the end pc (exclusive) of the handler's range. 279f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 280f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return >= startPc; the end pc (exclusive) of the 281f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * handler's range. 282f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 283f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int getEndPc() { 284f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return endPc; 285f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 286f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 287f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 288f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the pc of the exception handler. 289f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 290f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return >= 0; the pc of the exception handler 291f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 292f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int getHandlerPc() { 293f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return handlerPc; 294f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 295f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 296f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 297f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the class of exception handled. 298f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 299f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return non-null; the exception class; {@link CstType#OBJECT} 300f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if this entry handles all possible exceptions 301f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 302f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public CstType getExceptionClass() { 303f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (exceptionClass != null) ? 304f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exceptionClass : CstType.OBJECT; 305f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 306f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 307f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 308f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns whether the given address is in the range of this item. 309f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 310f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param pc the address 311f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return <code>true</code> iff this item covers <code>pc</code> 312f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 313f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean covers(int pc) { 314f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (pc >= startPc) && (pc < endPc); 315f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 316f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 317f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 318