Move the command line source location parsing from clang-cc.cpp into "include/Frontend/CommandLineSourceLoc.h".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74012 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 84 insertions, 0 deletions

diff --git a/include/clang/Frontend/CommandLineSourceLoc.h b/include/clang/Frontend/CommandLineSourceLoc.h
new file mode 100644
index 0000000000..7ee2a5816c
--- /dev/null
+++ b/include/clang/Frontend/CommandLineSourceLoc.h
@@ -0,0 +1,84 @@
+//===--- 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"
+
+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