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//===- Parser.cpp - Top-Level TableGen Parser implementation --------------===//
//
// 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 "llvm/TableGen/Parser.h"
#include "TGParser.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/TableGen/Record.h"
using namespace llvm;
bool llvm::TableGenParseFile(SourceMgr &InputSrcMgr, RecordKeeper &Records) {
// Initialize the global TableGen source manager by temporarily taking control
// of the input buffer in `SrcMgr`. This is kind of a hack, but allows for
// preserving TableGen's current awkward diagnostic behavior. If we can remove
// this reliance, we could drop all of this.
SrcMgr = SourceMgr();
SrcMgr.takeSourceBuffersFrom(InputSrcMgr);
SrcMgr.setIncludeDirs(InputSrcMgr.getIncludeDirs());
SrcMgr.setDiagHandler(InputSrcMgr.getDiagHandler(),
InputSrcMgr.getDiagContext());
// Setup the record keeper and try to parse the file.
auto *MainFileBuffer = SrcMgr.getMemoryBuffer(SrcMgr.getMainFileID());
Records.saveInputFilename(MainFileBuffer->getBufferIdentifier().str());
TGParser Parser(SrcMgr, /*Macros=*/std::nullopt, Records,
/*NoWarnOnUnusedTemplateArgs=*/false,
/*TrackReferenceLocs=*/true);
bool ParseResult = Parser.ParseFile();
// After parsing, reclaim the source manager buffers from TableGen's global
// manager.
InputSrcMgr.takeSourceBuffersFrom(SrcMgr);
SrcMgr = SourceMgr();
return ParseResult;
}
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