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//===--- CommandLineSourceLoc.h - Parsing for source locations-*- C++ -*---===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Command line parsing for source locations.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_FRONTEND_COMMANDLINESOURCELOC_H
#define LLVM_CLANG_FRONTEND_COMMANDLINESOURCELOC_H
#include "llvm/Support/CommandLine.h"
#include <cstdio>
namespace clang {
/// \brief A source location that has been parsed on the command line.
struct ParsedSourceLocation {
std::string FileName;
unsigned Line;
unsigned Column;
};
}
namespace llvm {
namespace cl {
/// \brief Command-line option parser that parses source locations.
///
/// Source locations are of the form filename:line:column.
template<>
class parser<clang::ParsedSourceLocation>
: public basic_parser<clang::ParsedSourceLocation> {
public:
bool parse(Option &O, const char *ArgName,
const std::string &ArgValue,
clang::ParsedSourceLocation &Val);
};
bool
parser<clang::ParsedSourceLocation>::
parse(Option &O, const char *ArgName, const std::string &ArgValue,
clang::ParsedSourceLocation &Val) {
using namespace clang;
const char *ExpectedFormat
= "source location must be of the form filename:line:column";
std::string::size_type SecondColon = ArgValue.rfind(':');
if (SecondColon == std::string::npos) {
std::fprintf(stderr, "%s\n", ExpectedFormat);
return true;
}
char *EndPtr;
long Column
= std::strtol(ArgValue.c_str() + SecondColon + 1, &EndPtr, 10);
if (EndPtr != ArgValue.c_str() + ArgValue.size()) {
std::fprintf(stderr, "%s\n", ExpectedFormat);
return true;
}
std::string::size_type FirstColon = ArgValue.rfind(':', SecondColon-1);
if (FirstColon == std::string::npos) {
std::fprintf(stderr, "%s\n", ExpectedFormat);
return true;
}
long Line = std::strtol(ArgValue.c_str() + FirstColon + 1, &EndPtr, 10);
if (EndPtr != ArgValue.c_str() + SecondColon) {
std::fprintf(stderr, "%s\n", ExpectedFormat);
return true;
}
Val.FileName = ArgValue.substr(0, FirstColon);
Val.Line = Line;
Val.Column = Column;
return false;
}
}
}
#endif
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