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26 #ifndef BinaryPropertyList_h
27 #define BinaryPropertyList_h
29 #include <CoreFoundation/CoreFoundation.h>
31 #include <wtf/Forward.h>
32 #include <wtf/Vector.h>
36 // Writes a limited subset of binary property lists.
37 // Covers only what's needed for writing browser history as of this writing.
38 class BinaryPropertyListObjectStream {
40 // Call writeBooleanTrue to write the boolean true value.
41 // A single shared object will be used in the serialized list.
42 virtual void writeBooleanTrue() = 0;
44 // Call writeInteger to write an integer value.
45 // A single shared object will be used for each integer in the serialized list.
46 virtual void writeInteger(int) = 0;
48 // Call writeString to write a string value.
49 // A single shared object will be used for each string in the serialized list.
50 virtual void writeString(const String&) = 0;
52 // Call writeUniqueString instead of writeString when it's unlikely the
53 // string will be written twice in the same property list; this saves hash
54 // table overhead for such strings. A separate object will be used for each
55 // of these strings in the serialized list.
56 virtual void writeUniqueString(const String&) = 0;
57 virtual void writeUniqueString(const char*) = 0;
59 // Call writeIntegerArray instead of writeArrayStart/writeArrayEnd for
60 // arrays entirely composed of integers. A single shared object will be used
61 // for each identical array in the serialized list. Warning: The integer
62 // pointer must remain valid until the writeBinaryPropertyList function
63 // returns, because these lists are put into a hash table without copying
64 // them -- that's OK if the client already has a Vector<int>.
65 virtual void writeIntegerArray(const int*, size_t) = 0;
67 // After calling writeArrayStart, write array elements.
68 // Then call writeArrayEnd, passing in the result from writeArrayStart.
69 // A separate object will be used for each of these arrays in the serialized list.
70 virtual size_t writeArrayStart() = 0;
71 virtual void writeArrayEnd(size_t resultFromWriteArrayStart) = 0;
73 // After calling writeDictionaryStart, write all keys, then all values.
74 // Then call writeDictionaryEnd, passing in the result from writeDictionaryStart.
75 // A separate object will be used for each dictionary in the serialized list.
76 virtual size_t writeDictionaryStart() = 0;
77 virtual void writeDictionaryEnd(size_t resultFromWriteDictionaryStart) = 0;
80 virtual ~BinaryPropertyListObjectStream() { }
83 class BinaryPropertyListWriter {
85 // Calls writeObjects once to prepare for writing and determine how big a
86 // buffer is required. Then calls buffer to get the appropriately-sized
87 // buffer, then calls writeObjects a second time and writes the property list.
88 void writePropertyList();
91 virtual ~BinaryPropertyListWriter() { }
94 // Called by writePropertyList.
95 // Must call the object stream functions for the objects to be written
96 // into the property list.
97 virtual void writeObjects(BinaryPropertyListObjectStream&) = 0;
99 // Called by writePropertyList.
100 // Returns the buffer that the writer should write into.
101 virtual UInt8* buffer(size_t) = 0;
103 friend class BinaryPropertyListPlan;
104 friend class BinaryPropertyListSerializer;