blob: ccd929a440dc4dda46b9dcc5424c8e273dca9197 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
//==- Deserialize.cpp - Generic Object Serialization to Bitcode --*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Ted Kremenek and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the internal methods used for object serialization.
//
//===----------------------------------------------------------------------===//
#include "llvm/Bitcode/Serialization.h"
using namespace llvm;
Deserializer::Deserializer(BitstreamReader& stream)
: Stream(stream), RecIdx(0) {
}
Deserializer::~Deserializer() {
assert (RecIdx >= Record.size() &&
"Still scanning bitcode record when deserialization completed.");
}
void Deserializer::ReadRecord() {
// FIXME: Check if we haven't run off the edge of the stream.
// FIXME: Handle abbreviations.
unsigned Code = Stream.ReadCode();
// FIXME: Check for the correct code.
assert (Record.size() == 0);
Stream.ReadRecord(Code,Record);
assert (Record.size() > 0);
}
uint64_t Deserializer::ReadInt(unsigned Bits) {
// FIXME: Any error recovery/handling with incomplete or bad files?
if (!inRecord())
ReadRecord();
// FIXME: check for loss of precision in read (compare to Bits)
return Record[RecIdx++];
}
char* Deserializer::ReadCString(char* cstr, unsigned MaxLen, bool isNullTerm) {
if (cstr == NULL)
MaxLen = 0; // Zero this just in case someone does something funny.
unsigned len = ReadInt(32);
// FIXME: perform dynamic checking of lengths?
assert (MaxLen == 0 || (len + (isNullTerm ? 1 : 0)) <= MaxLen);
if (!cstr)
cstr = new char[len + (isNullTerm ? 1 : 0)];
assert (cstr != NULL);
for (unsigned i = 0; i < len; ++i)
cstr[i] = ReadInt(8);
if (isNullTerm)
cstr[len+1] = '\0';
return cstr;
}
void Deserializer::ReadCString(std::vector<char>& buff, bool isNullTerm) {
buff.clear();
unsigned len = ReadInt(32);
buff.reserve(len);
for (unsigned i = 0; i < len; ++i)
buff.push_back(ReadInt(8));
if (isNullTerm)
buff.push_back('\0');
}
|
