40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
//===- Parser.cpp - Top-Level TableGen Parser implementation --------------===//
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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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#include "llvm/TableGen/Parser.h"
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#include "TGParser.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/TableGen/Record.h"
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using namespace llvm;
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bool llvm::TableGenParseFile(SourceMgr &InputSrcMgr, RecordKeeper &Records) {
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// Initialize the global TableGen source manager by temporarily taking control
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// of the input buffer in `SrcMgr`. This is kind of a hack, but allows for
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// preserving TableGen's current awkward diagnostic behavior. If we can remove
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// this reliance, we could drop all of this.
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SrcMgr = SourceMgr();
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SrcMgr.takeSourceBuffersFrom(InputSrcMgr);
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SrcMgr.setIncludeDirs(InputSrcMgr.getIncludeDirs());
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SrcMgr.setDiagHandler(InputSrcMgr.getDiagHandler(),
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InputSrcMgr.getDiagContext());
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// Setup the record keeper and try to parse the file.
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auto *MainFileBuffer = SrcMgr.getMemoryBuffer(SrcMgr.getMainFileID());
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Records.saveInputFilename(MainFileBuffer->getBufferIdentifier().str());
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TGParser Parser(SrcMgr, /*Macros=*/None, Records);
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bool ParseResult = Parser.ParseFile();
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// After parsing, reclaim the source manager buffers from TableGen's global
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// manager.
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InputSrcMgr.takeSourceBuffersFrom(SrcMgr);
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SrcMgr = SourceMgr();
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return ParseResult;
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}
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