forked from OSchip/llvm-project
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
//===- Parser.cpp - Main dispatch module for the Parser library -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This library implements the functionality defined in llvm/Assembly/Parser.h
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Assembly/Parser.h"
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#include "LLParser.h"
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#include "llvm/Module.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstring>
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using namespace llvm;
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Module *llvm::ParseAssemblyFile(const std::string &Filename, ParseError &Err) {
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Err.setFilename(Filename);
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std::string ErrorStr;
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OwningPtr<MemoryBuffer>
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F(MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr));
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if (F == 0) {
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Err.setError("Could not open input file '" + Filename + "'");
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return 0;
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}
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OwningPtr<Module> M(new Module(Filename));
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if (LLParser(F.get(), Err, M.get()).Run())
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return 0;
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return M.take();
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}
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Module *llvm::ParseAssemblyString(const char *AsmString, Module *M,
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ParseError &Err) {
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Err.setFilename("<string>");
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OwningPtr<MemoryBuffer>
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F(MemoryBuffer::getMemBuffer(AsmString, AsmString+strlen(AsmString),
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"<string>"));
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// If we are parsing into an existing module, do it.
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if (M)
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return LLParser(F.get(), Err, M).Run() ? 0 : M;
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// Otherwise create a new module.
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OwningPtr<Module> M2(new Module("<string>"));
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if (LLParser(F.get(), Err, M2.get()).Run())
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return 0;
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return M2.take();
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}
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//===------------------------------------------------------------------------===
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// ParseError Class
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//===------------------------------------------------------------------------===
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void ParseError::PrintError(const char *ProgName, raw_ostream &S) {
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errs() << ProgName << ": ";
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if (Filename == "-")
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errs() << "<stdin>";
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else
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errs() << Filename;
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if (LineNo != -1) {
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errs() << ':' << LineNo;
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if (ColumnNo != -1)
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errs() << ':' << (ColumnNo+1);
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}
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errs() << ": " << Message << '\n';
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if (LineNo != -1 && ColumnNo != -1) {
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errs() << LineContents << '\n';
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// Print out spaces/tabs before the caret.
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for (unsigned i = 0; i != unsigned(ColumnNo); ++i)
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errs() << (LineContents[i] == '\t' ? '\t' : ' ');
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errs() << "^\n";
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}
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}
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