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