81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
|
//===- SymbolRemappingReader.cpp - Read symbol remapping file -------------===//
|
||
|
|
//
|
||
|
|
// 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 contains definitions needed for reading and applying symbol
|
||
|
|
// remapping files.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "llvm/Support/SymbolRemappingReader.h"
|
||
|
|
#include "llvm/ADT/StringSwitch.h"
|
||
|
|
#include "llvm/ADT/Twine.h"
|
||
|
|
#include "llvm/Support/LineIterator.h"
|
||
|
|
|
||
|
|
using namespace llvm;
|
||
|
|
|
||
|
|
char SymbolRemappingParseError::ID;
|
||
|
|
|
||
|
|
/// Load a set of name remappings from a text file.
|
||
|
|
///
|
||
|
|
/// See the documentation at the top of the file for an explanation of
|
||
|
|
/// the expected format.
|
||
|
|
Error SymbolRemappingReader::read(MemoryBuffer &B) {
|
||
|
|
line_iterator LineIt(B, /*SkipBlanks=*/true, '#');
|
||
|
|
|
||
|
|
auto ReportError = [&](Twine Msg) {
|
||
|
|
return llvm::make_error<SymbolRemappingParseError>(
|
||
|
|
B.getBufferIdentifier(), LineIt.line_number(), Msg);
|
||
|
|
};
|
||
|
|
|
||
|
|
for (; !LineIt.is_at_eof(); ++LineIt) {
|
||
|
|
StringRef Line = *LineIt;
|
||
|
|
Line = Line.ltrim(' ');
|
||
|
|
// line_iterator only detects comments starting in column 1.
|
||
|
|
if (Line.startswith("#") || Line.empty())
|
||
|
|
continue;
|
||
|
|
|
||
|
|
SmallVector<StringRef, 4> Parts;
|
||
|
|
Line.split(Parts, ' ', /*MaxSplits*/-1, /*KeepEmpty*/false);
|
||
|
|
|
||
|
|
if (Parts.size() != 3)
|
||
|
|
return ReportError("Expected 'kind mangled_name mangled_name', "
|
||
|
|
"found '" + Line + "'");
|
||
|
|
|
||
|
|
using FK = ItaniumManglingCanonicalizer::FragmentKind;
|
||
|
|
Optional<FK> FragmentKind = StringSwitch<Optional<FK>>(Parts[0])
|
||
|
|
.Case("name", FK::Name)
|
||
|
|
.Case("type", FK::Type)
|
||
|
|
.Case("encoding", FK::Encoding)
|
||
|
|
.Default(None);
|
||
|
|
if (!FragmentKind)
|
||
|
|
return ReportError("Invalid kind, expected 'name', 'type', or 'encoding',"
|
||
|
|
" found '" + Parts[0] + "'");
|
||
|
|
|
||
|
|
using EE = ItaniumManglingCanonicalizer::EquivalenceError;
|
||
|
|
switch (Canonicalizer.addEquivalence(*FragmentKind, Parts[1], Parts[2])) {
|
||
|
|
case EE::Success:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case EE::ManglingAlreadyUsed:
|
||
|
|
return ReportError("Manglings '" + Parts[1] + "' and '" + Parts[2] + "' "
|
||
|
|
"have both been used in prior remappings. Move this "
|
||
|
|
"remapping earlier in the file.");
|
||
|
|
|
||
|
|
case EE::InvalidFirstMangling:
|
||
|
|
return ReportError("Could not demangle '" + Parts[1] + "' "
|
||
|
|
"as a <" + Parts[0] + ">; invalid mangling?");
|
||
|
|
|
||
|
|
case EE::InvalidSecondMangling:
|
||
|
|
return ReportError("Could not demangle '" + Parts[2] + "' "
|
||
|
|
"as a <" + Parts[0] + ">; invalid mangling?");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return Error::success();
|
||
|
|
}
|