blob: 8345e77987595adb497aff12e95174dfcde5a868 (
plain) (
blame)
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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===--- Serialization/PCHContainerOperations.h - PCH Containers --*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_SERIALIZATION_PCHCONTAINEROPERATIONS_H
#define LLVM_CLANG_SERIALIZATION_PCHCONTAINEROPERATIONS_H
#include "clang/Basic/Module.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/MemoryBuffer.h"
#include <memory>
namespace llvm {
class raw_pwrite_stream;
}
namespace clang {
class ASTConsumer;
class CompilerInstance;
struct PCHBuffer {
ASTFileSignature Signature;
llvm::SmallVector<char, 0> Data;
bool IsComplete;
};
/// This abstract interface provides operations for creating
/// containers for serialized ASTs (precompiled headers and clang
/// modules).
class PCHContainerWriter {
public:
virtual ~PCHContainerWriter() = 0;
virtual llvm::StringRef getFormat() const = 0;
/// Return an ASTConsumer that can be chained with a
/// PCHGenerator that produces a wrapper file format containing a
/// serialized AST bitstream.
virtual std::unique_ptr<ASTConsumer>
CreatePCHContainerGenerator(CompilerInstance &CI,
const std::string &MainFileName,
const std::string &OutputFileName,
std::unique_ptr<llvm::raw_pwrite_stream> OS,
std::shared_ptr<PCHBuffer> Buffer) const = 0;
};
/// This abstract interface provides operations for unwrapping
/// containers for serialized ASTs (precompiled headers and clang
/// modules).
class PCHContainerReader {
public:
virtual ~PCHContainerReader() = 0;
/// Equivalent to the format passed to -fmodule-format=
virtual llvm::StringRef getFormat() const = 0;
/// Returns the serialized AST inside the PCH container Buffer.
virtual llvm::StringRef ExtractPCH(llvm::MemoryBufferRef Buffer) const = 0;
};
/// Implements write operations for a raw pass-through PCH container.
class RawPCHContainerWriter : public PCHContainerWriter {
llvm::StringRef getFormat() const override { return "raw"; }
/// Return an ASTConsumer that can be chained with a
/// PCHGenerator that writes the module to a flat file.
std::unique_ptr<ASTConsumer>
CreatePCHContainerGenerator(CompilerInstance &CI,
const std::string &MainFileName,
const std::string &OutputFileName,
std::unique_ptr<llvm::raw_pwrite_stream> OS,
std::shared_ptr<PCHBuffer> Buffer) const override;
};
/// Implements read operations for a raw pass-through PCH container.
class RawPCHContainerReader : public PCHContainerReader {
llvm::StringRef getFormat() const override { return "raw"; }
/// Simply returns the buffer contained in Buffer.
llvm::StringRef ExtractPCH(llvm::MemoryBufferRef Buffer) const override;
};
/// A registry of PCHContainerWriter and -Reader objects for different formats.
class PCHContainerOperations {
llvm::StringMap<std::unique_ptr<PCHContainerWriter>> Writers;
llvm::StringMap<std::unique_ptr<PCHContainerReader>> Readers;
public:
/// Automatically registers a RawPCHContainerWriter and
/// RawPCHContainerReader.
PCHContainerOperations();
void registerWriter(std::unique_ptr<PCHContainerWriter> Writer) {
Writers[Writer->getFormat()] = std::move(Writer);
}
void registerReader(std::unique_ptr<PCHContainerReader> Reader) {
Readers[Reader->getFormat()] = std::move(Reader);
}
const PCHContainerWriter *getWriterOrNull(llvm::StringRef Format) {
return Writers[Format].get();
}
const PCHContainerReader *getReaderOrNull(llvm::StringRef Format) {
return Readers[Format].get();
}
const PCHContainerReader &getRawReader() {
return *getReaderOrNull("raw");
}
};
}
#endif
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
