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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
//===- RemarkParser.cpp --------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file provides utility methods used by clients that want to use the
// parser for remark diagnostics in LLVM.
//
//===----------------------------------------------------------------------===//
#include "llvm/Remarks/RemarkParser.h"
#include "BitstreamRemarkParser.h"
#include "YAMLRemarkParser.h"
#include "llvm-c/Remarks.h"
#include "llvm/Support/CBindingWrapping.h"
using namespace llvm;
using namespace llvm::remarks;
char EndOfFileError::ID = 0;
ParsedStringTable::ParsedStringTable(StringRef InBuffer) : Buffer(InBuffer) {
while (!InBuffer.empty()) {
// Strings are separated by '\0' bytes.
std::pair<StringRef, StringRef> Split = InBuffer.split('\0');
// We only store the offset from the beginning of the buffer.
Offsets.push_back(Split.first.data() - Buffer.data());
InBuffer = Split.second;
}
}
Expected<StringRef> ParsedStringTable::operator[](size_t Index) const {
if (Index >= Offsets.size())
return createStringError(
std::make_error_code(std::errc::invalid_argument),
"String with index %u is out of bounds (size = %u).", Index,
Offsets.size());
size_t Offset = Offsets[Index];
// If it's the last offset, we can't use the next offset to know the size of
// the string.
size_t NextOffset =
(Index == Offsets.size() - 1) ? Buffer.size() : Offsets[Index + 1];
return StringRef(Buffer.data() + Offset, NextOffset - Offset - 1);
}
Expected<std::unique_ptr<RemarkParser>>
llvm::remarks::createRemarkParser(Format ParserFormat, StringRef Buf) {
switch (ParserFormat) {
case Format::YAML:
return std::make_unique<YAMLRemarkParser>(Buf);
case Format::YAMLStrTab:
return createStringError(
std::make_error_code(std::errc::invalid_argument),
"The YAML with string table format requires a parsed string table.");
case Format::Bitstream:
return std::make_unique<BitstreamRemarkParser>(Buf);
case Format::Unknown:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"Unknown remark parser format.");
}
llvm_unreachable("unhandled ParseFormat");
}
Expected<std::unique_ptr<RemarkParser>>
llvm::remarks::createRemarkParser(Format ParserFormat, StringRef Buf,
ParsedStringTable StrTab) {
switch (ParserFormat) {
case Format::YAML:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"The YAML format can't be used with a string "
"table. Use yaml-strtab instead.");
case Format::YAMLStrTab:
return std::make_unique<YAMLStrTabRemarkParser>(Buf, std::move(StrTab));
case Format::Bitstream:
return std::make_unique<BitstreamRemarkParser>(Buf, std::move(StrTab));
case Format::Unknown:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"Unknown remark parser format.");
}
llvm_unreachable("unhandled ParseFormat");
}
Expected<std::unique_ptr<RemarkParser>>
llvm::remarks::createRemarkParserFromMeta(
Format ParserFormat, StringRef Buf, Optional<ParsedStringTable> StrTab,
Optional<StringRef> ExternalFilePrependPath) {
switch (ParserFormat) {
// Depending on the metadata, the format can be either yaml or yaml-strtab,
// regardless of the input argument.
case Format::YAML:
case Format::YAMLStrTab:
return createYAMLParserFromMeta(Buf, std::move(StrTab),
std::move(ExternalFilePrependPath));
case Format::Bitstream:
return createBitstreamParserFromMeta(Buf, std::move(StrTab),
std::move(ExternalFilePrependPath));
case Format::Unknown:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"Unknown remark parser format.");
}
llvm_unreachable("unhandled ParseFormat");
}
namespace {
// Wrapper that holds the state needed to interact with the C API.
struct CParser {
std::unique_ptr<RemarkParser> TheParser;
Optional<std::string> Err;
CParser(Format ParserFormat, StringRef Buf,
Optional<ParsedStringTable> StrTab = None)
: TheParser(cantFail(
StrTab ? createRemarkParser(ParserFormat, Buf, std::move(*StrTab))
: createRemarkParser(ParserFormat, Buf))) {}
void handleError(Error E) { Err.emplace(toString(std::move(E))); }
bool hasError() const { return Err.hasValue(); }
const char *getMessage() const { return Err ? Err->c_str() : nullptr; };
};
} // namespace
// Create wrappers for C Binding types (see CBindingWrapping.h).
DEFINE_SIMPLE_CONVERSION_FUNCTIONS(CParser, LLVMRemarkParserRef)
extern "C" LLVMRemarkParserRef LLVMRemarkParserCreateYAML(const void *Buf,
uint64_t Size) {
return wrap(new CParser(Format::YAML,
StringRef(static_cast<const char *>(Buf), Size)));
}
extern "C" LLVMRemarkParserRef LLVMRemarkParserCreateBitstream(const void *Buf,
uint64_t Size) {
return wrap(new CParser(Format::Bitstream,
StringRef(static_cast<const char *>(Buf), Size)));
}
extern "C" LLVMRemarkEntryRef
LLVMRemarkParserGetNext(LLVMRemarkParserRef Parser) {
CParser &TheCParser = *unwrap(Parser);
remarks::RemarkParser &TheParser = *TheCParser.TheParser;
Expected<std::unique_ptr<Remark>> MaybeRemark = TheParser.next();
if (Error E = MaybeRemark.takeError()) {
if (E.isA<EndOfFileError>()) {
consumeError(std::move(E));
return nullptr;
}
// Handle the error. Allow it to be checked through HasError and
// GetErrorMessage.
TheCParser.handleError(std::move(E));
return nullptr;
}
// Valid remark.
return wrap(MaybeRemark->release());
}
extern "C" LLVMBool LLVMRemarkParserHasError(LLVMRemarkParserRef Parser) {
return unwrap(Parser)->hasError();
}
extern "C" const char *
LLVMRemarkParserGetErrorMessage(LLVMRemarkParserRef Parser) {
return unwrap(Parser)->getMessage();
}
extern "C" void LLVMRemarkParserDispose(LLVMRemarkParserRef Parser) {
delete unwrap(Parser);
}
|
