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119 lines
2.5 KiB
C++
119 lines
2.5 KiB
C++
//==- Serialize.cpp - Generic Object Serialization to Bitcode ----*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the internal methods used for object serialization.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Bitcode/Serialize.h"
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#include "string.h"
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#ifdef DEBUG_BACKPATCH
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#include "llvm/Support/Streams.h"
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#endif
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using namespace llvm;
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Serializer::Serializer(BitstreamWriter& stream)
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: Stream(stream), BlockLevel(0) {}
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Serializer::~Serializer() {
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if (inRecord())
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EmitRecord();
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while (BlockLevel > 0)
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Stream.ExitBlock();
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Stream.FlushToWord();
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}
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void Serializer::EmitRecord() {
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assert(Record.size() > 0 && "Cannot emit empty record.");
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Stream.EmitRecord(8,Record);
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Record.clear();
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}
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void Serializer::EnterBlock(unsigned BlockID,unsigned CodeLen) {
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FlushRecord();
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Stream.EnterSubblock(BlockID,CodeLen);
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++BlockLevel;
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}
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void Serializer::ExitBlock() {
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assert (BlockLevel > 0);
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--BlockLevel;
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FlushRecord();
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Stream.ExitBlock();
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}
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void Serializer::EmitInt(uint64_t X) {
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assert (BlockLevel > 0);
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Record.push_back(X);
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}
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void Serializer::EmitSInt(int64_t X) {
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if (X >= 0)
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EmitInt(X << 1);
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else
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EmitInt((-X << 1) | 1);
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}
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void Serializer::EmitCStr(const char* s, const char* end) {
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Record.push_back(end - s);
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while(s != end) {
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Record.push_back(*s);
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++s;
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}
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}
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void Serializer::EmitCStr(const char* s) {
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EmitCStr(s,s+strlen(s));
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}
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SerializedPtrID Serializer::getPtrId(const void* ptr) {
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if (!ptr)
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return 0;
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MapTy::iterator I = PtrMap.find(ptr);
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if (I == PtrMap.end()) {
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unsigned id = PtrMap.size()+1;
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#ifdef DEBUG_BACKPATCH
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llvm::cerr << "Registered PTR: " << ptr << " => " << id << "\n";
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#endif
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PtrMap[ptr] = id;
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return id;
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}
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else return I->second;
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}
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bool Serializer::isRegistered(const void* ptr) const {
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MapTy::const_iterator I = PtrMap.find(ptr);
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return I != PtrMap.end();
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}
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#define INT_EMIT(TYPE)\
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void SerializeTrait<TYPE>::Emit(Serializer&S, TYPE X) { S.EmitInt(X); }
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INT_EMIT(bool)
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INT_EMIT(unsigned char)
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INT_EMIT(unsigned short)
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INT_EMIT(unsigned int)
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INT_EMIT(unsigned long)
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#define SINT_EMIT(TYPE)\
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void SerializeTrait<TYPE>::Emit(Serializer&S, TYPE X) { S.EmitSInt(X); }
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SINT_EMIT(signed char)
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SINT_EMIT(signed short)
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SINT_EMIT(signed int)
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SINT_EMIT(signed long)
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