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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
//===- SymbolRemappingReader.cpp - Read symbol remapping file -------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains definitions needed for reading and applying symbol
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// remapping files.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/SymbolRemappingReader.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/LineIterator.h"
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using namespace llvm;
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char SymbolRemappingParseError::ID;
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/// Load a set of name remappings from a text file.
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///
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/// See the documentation at the top of the file for an explanation of
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/// the expected format.
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Error SymbolRemappingReader::read(MemoryBuffer &B) {
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line_iterator LineIt(B, /*SkipBlanks=*/true, '#');
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auto ReportError = [&](Twine Msg) {
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return llvm::make_error<SymbolRemappingParseError>(
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B.getBufferIdentifier(), LineIt.line_number(), Msg);
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};
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for (; !LineIt.is_at_eof(); ++LineIt) {
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StringRef Line = *LineIt;
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Line = Line.ltrim(' ');
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// line_iterator only detects comments starting in column 1.
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if (Line.startswith("#") || Line.empty())
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continue;
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SmallVector<StringRef, 4> Parts;
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Line.split(Parts, ' ', /*MaxSplits*/-1, /*KeepEmpty*/false);
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if (Parts.size() != 3)
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return ReportError("Expected 'kind mangled_name mangled_name', "
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"found '" + Line + "'");
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using FK = ItaniumManglingCanonicalizer::FragmentKind;
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Optional<FK> FragmentKind = StringSwitch<Optional<FK>>(Parts[0])
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.Case("name", FK::Name)
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.Case("type", FK::Type)
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.Case("encoding", FK::Encoding)
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.Default(None);
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if (!FragmentKind)
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return ReportError("Invalid kind, expected 'name', 'type', or 'encoding',"
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" found '" + Parts[0] + "'");
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using EE = ItaniumManglingCanonicalizer::EquivalenceError;
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switch (Canonicalizer.addEquivalence(*FragmentKind, Parts[1], Parts[2])) {
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case EE::Success:
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break;
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case EE::ManglingAlreadyUsed:
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return ReportError("Manglings '" + Parts[1] + "' and '" + Parts[2] + "' "
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"have both been used in prior remappings. Move this "
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"remapping earlier in the file.");
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case EE::InvalidFirstMangling:
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return ReportError("Could not demangle '" + Parts[1] + "' "
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"as a <" + Parts[0] + ">; invalid mangling?");
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case EE::InvalidSecondMangling:
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return ReportError("Could not demangle '" + Parts[2] + "' "
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"as a <" + Parts[0] + ">; invalid mangling?");
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}
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}
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return Error::success();
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}
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