1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* 18 * Verification-time map of data section items 19 */ 20 21 #ifndef LIBDEX_DEXDATAMAP_H_ 22 #define LIBDEX_DEXDATAMAP_H_ 23 24 #include "DexFile.h" 25 26 struct DexDataMap { 27 u4 count; /* number of items currently in the map */ 28 u4 max; /* maximum number of items that may be held */ 29 u4* offsets; /* array of item offsets */ 30 u2* types; /* corresponding array of item types */ 31 }; 32 33 /* 34 * Allocate and initialize a DexDataMap. Returns NULL on failure. 35 */ 36 DexDataMap* dexDataMapAlloc(u4 maxCount); 37 38 /* 39 * Free a DexDataMap. 40 */ 41 void dexDataMapFree(DexDataMap* map); 42 43 /* 44 * Add a new element to the map. The offset must be greater than the 45 * all previously added offsets. 46 */ 47 void dexDataMapAdd(DexDataMap* map, u4 offset, u2 type); 48 49 /* 50 * Get the type associated with the given offset. This returns -1 if 51 * there is no entry for the given offset. 52 */ 53 int dexDataMapGet(DexDataMap* map, u4 offset); 54 55 /* 56 * Verify that there is an entry in the map, mapping the given offset to 57 * the given type. This will return true if such an entry exists and 58 * return false as well as log an error if not. 59 */ 60 bool dexDataMapVerify(DexDataMap* map, u4 offset, u2 type); 61 62 /* 63 * Like dexDataMapVerify(), but also accept a 0 offset as valid. 64 */ 65 DEX_INLINE bool dexDataMapVerify0Ok(DexDataMap* map, u4 offset, u2 type) { 66 if (offset == 0) { 67 return true; 68 } 69 70 return dexDataMapVerify(map, offset, type); 71 } 72 73 #endif // LIBDEX_DEXDATAMAP_H_ 74
