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annotate lib/AsmParser/Parser.cpp @ 3:9ad51c7bc036

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author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Wed, 15 May 2013 06:43:32 +0900
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1 //===- Parser.cpp - Main dispatch module for the Parser library -----------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This library implements the functionality defined in llvm/Assembly/Parser.h
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/Assembly/Parser.h"
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15 #include "LLParser.h"
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16 #include "llvm/ADT/OwningPtr.h"
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17 #include "llvm/IR/Module.h"
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18 #include "llvm/Support/MemoryBuffer.h"
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19 #include "llvm/Support/SourceMgr.h"
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20 #include "llvm/Support/raw_ostream.h"
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21 #include "llvm/Support/system_error.h"
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22 #include <cstring>
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23 using namespace llvm;
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24
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25 Module *llvm::ParseAssembly(MemoryBuffer *F,
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26 Module *M,
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27 SMDiagnostic &Err,
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28 LLVMContext &Context) {
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29 SourceMgr SM;
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30 SM.AddNewSourceBuffer(F, SMLoc());
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31
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32 // If we are parsing into an existing module, do it.
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33 if (M)
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34 return LLParser(F, SM, Err, M).Run() ? 0 : M;
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35
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36 // Otherwise create a new module.
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37 OwningPtr<Module> M2(new Module(F->getBufferIdentifier(), Context));
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38 if (LLParser(F, SM, Err, M2.get()).Run())
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39 return 0;
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40 return M2.take();
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41 }
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43 Module *llvm::ParseAssemblyFile(const std::string &Filename, SMDiagnostic &Err,
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44 LLVMContext &Context) {
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45 OwningPtr<MemoryBuffer> File;
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46 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), File)) {
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47 Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
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48 "Could not open input file: " + ec.message());
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49 return 0;
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50 }
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51
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52 return ParseAssembly(File.take(), 0, Err, Context);
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53 }
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55 Module *llvm::ParseAssemblyString(const char *AsmString, Module *M,
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56 SMDiagnostic &Err, LLVMContext &Context) {
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57 MemoryBuffer *F =
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58 MemoryBuffer::getMemBuffer(StringRef(AsmString, strlen(AsmString)),
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59 "<string>");
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60
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61 return ParseAssembly(F, M, Err, Context);
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62 }