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