auto import from //depot/cupcake/@135843

1 files changed, 73 insertions, 0 deletions

diff --git a/libdex/DexDataMap.h b/libdex/DexDataMap.h
new file mode 100644
index 000000000..fa556d5aa
--- /dev/null
+++ b/libdex/DexDataMap.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.
+ */
+
+/*
+ * Verification-time map of data section items
+ */
+
+#ifndef _LIBDEX_DEXDATAMAP
+#define _LIBDEX_DEXDATAMAP
+
+#include "DexFile.h"
+
+typedef struct DexDataMap {
+    u4 count;    /* number of items currently in the map */
+    u4 max;      /* maximum number of items that may be held */
+    u4* offsets; /* array of item offsets */
+    u2* types;   /* corresponding array of item types */
+} DexDataMap;
+
+/*
+ * Allocate and initialize a DexDataMap. Returns NULL on failure.
+ */
+DexDataMap* dexDataMapAlloc(u4 maxCount);
+
+/*
+ * Free a DexDataMap.
+ */
+void dexDataMapFree(DexDataMap* map);
+
+/*
+ * Add a new element to the map. The offset must be greater than the
+ * all previously added offsets.
+ */
+void dexDataMapAdd(DexDataMap* map, u4 offset, u2 type);
+
+/*
+ * Get the type associated with the given offset. This returns -1 if
+ * there is no entry for the given offset.
+ */
+int dexDataMapGet(DexDataMap* map, u4 offset);
+
+/*
+ * Verify that there is an entry in the map, mapping the given offset to
+ * the given type. This will return true if such an entry exists and
+ * return false as well as log an error if not.
+ */
+bool dexDataMapVerify(DexDataMap* map, u4 offset, u2 type);
+
+/*
+ * Like dexDataMapVerify(), but also accept a 0 offset as valid.
+ */
+DEX_INLINE bool dexDataMapVerify0Ok(DexDataMap* map, u4 offset, u2 type) {
+    if (offset == 0) {
+        return true;
+    }
+
+    return dexDataMapVerify(map, offset, type);
+}
+
+#endif /*_LIBDEX_DEXDATAMAP*/