blob: d3ea99bc0c370cc2bf95b38ef058b530993c8abe (
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
|
//===- MemoryBufferCache.cpp - Cache for loaded memory buffers ------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/MemoryBufferCache.h"
#include "llvm/Support/MemoryBuffer.h"
using namespace clang;
llvm::MemoryBuffer &
MemoryBufferCache::addBuffer(llvm::StringRef Filename,
std::unique_ptr<llvm::MemoryBuffer> Buffer) {
auto Insertion =
Buffers.insert({Filename, BufferEntry{std::move(Buffer), NextIndex++}});
assert(Insertion.second && "Already has a buffer");
return *Insertion.first->second.Buffer;
}
llvm::MemoryBuffer *MemoryBufferCache::lookupBuffer(llvm::StringRef Filename) {
auto I = Buffers.find(Filename);
if (I == Buffers.end())
return nullptr;
return I->second.Buffer.get();
}
bool MemoryBufferCache::isBufferFinal(llvm::StringRef Filename) {
auto I = Buffers.find(Filename);
if (I == Buffers.end())
return false;
return I->second.Index < FirstRemovableIndex;
}
bool MemoryBufferCache::tryToRemoveBuffer(llvm::StringRef Filename) {
auto I = Buffers.find(Filename);
assert(I != Buffers.end() && "No buffer to remove...");
if (I->second.Index < FirstRemovableIndex)
return true;
Buffers.erase(I);
return false;
}
void MemoryBufferCache::finalizeCurrentBuffers() { FirstRemovableIndex = NextIndex; }
|
