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[oota-llvm.git] / lib / Support / CommandLine.cpp

diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index 3d30e7a9f52ec1103af43a1a9a63a2c966d349fb..486875210fd14735ae562996dd80b2e976dd4096 100644 (file)
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -29,6 +29,7 @@
 #include <cstdlib>
 #include <cerrno>
 #include <cstring>
+#include <climits>
 using namespace llvm;
 using namespace cl;
 
@@ -36,6 +37,7 @@ using namespace cl;
 // Template instantiations and anchors.
 //
 TEMPLATE_INSTANTIATION(class basic_parser<bool>);
+TEMPLATE_INSTANTIATION(class basic_parser<boolOrDefault>);
 TEMPLATE_INSTANTIATION(class basic_parser<int>);
 TEMPLATE_INSTANTIATION(class basic_parser<unsigned>);
 TEMPLATE_INSTANTIATION(class basic_parser<double>);
@@ -50,6 +52,7 @@ TEMPLATE_INSTANTIATION(class opt<bool>);
 void Option::anchor() {}
 void basic_parser_impl::anchor() {}
 void parser<bool>::anchor() {}
+void parser<boolOrDefault>::anchor() {}
 void parser<int>::anchor() {}
 void parser<unsigned>::anchor() {}
 void parser<double>::anchor() {}
@@ -71,6 +74,13 @@ extrahelp::extrahelp(const char *Help)
   MoreHelp->push_back(Help);
 }
 
+static bool OptionListChanged = false;
+
+// MarkOptionsChanged - Internal helper function.
+void cl::MarkOptionsChanged() {
+  OptionListChanged = true;
+}
+
 /// RegisteredOptionList - This is the list of the command line options that
 /// have statically constructed themselves.
 static Option *RegisteredOptionList = 0;
@@ -80,8 +90,10 @@ void Option::addArgument() {
   
   NextRegistered = RegisteredOptionList;
   RegisteredOptionList = this;
+  MarkOptionsChanged();
 }
 
+
 //===----------------------------------------------------------------------===//
 // Basic, shared command line option processing machinery.
 //
@@ -89,6 +101,7 @@ void Option::addArgument() {
 /// GetOptionInfo - Scan the list of registered options, turning them into data
 /// structures that are easier to handle.
 static void GetOptionInfo(std::vector<Option*> &PositionalOpts,
+                          std::vector<Option*> &SinkOpts,
                           std::map<std::string, Option*> &OptionsMap) {
   std::vector<const char*> OptionNames;
   Option *CAOpt = 0;  // The ConsumeAfter option if it exists.
@@ -114,6 +127,8 @@ static void GetOptionInfo(std::vector<Option*> &PositionalOpts,
     // Remember information about positional options.
     if (O->getFormattingFlag() == cl::Positional)
       PositionalOpts.push_back(O);
+    else if (O->getMiscFlags() & cl::Sink) // Remember sink options
+      SinkOpts.push_back(O);
     else if (O->getNumOccurrencesFlag() == cl::ConsumeAfter) {
       if (CAOpt)
         O->error("Cannot specify more than one option with cl::ConsumeAfter!");
@@ -321,12 +336,13 @@ void cl::ParseEnvironmentOptions(const char *progName, const char *envVar,
     free (*i);
 }
 
-void cl::ParseCommandLineOptions(int &argc, char **argv,
+void cl::ParseCommandLineOptions(int argc, char **argv,
                                  const char *Overview) {
   // Process all registered options.
   std::vector<Option*> PositionalOpts;
+  std::vector<Option*> SinkOpts;
   std::map<std::string, Option*> Opts;
-  GetOptionInfo(PositionalOpts, Opts);
+  GetOptionInfo(PositionalOpts, SinkOpts, Opts);
   
   assert((!Opts.empty() || !PositionalOpts.empty()) &&
          "No options specified!");
@@ -394,10 +410,6 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
   // the positional args into the PositionalVals list...
   Option *ActivePositionalArg = 0;
 
-  // Keep track of the option list so far so that we can tell if it is ever
-  // extended.
-  Option *CurOptionList = RegisteredOptionList;
-  
   // Loop over all of the arguments... processing them.
   bool DashDashFound = false;  // Have we read '--'?
   for (int i = 1; i < argc; ++i) {
@@ -405,14 +417,15 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
     const char *Value = 0;
     const char *ArgName = "";
 
-    // If the head of the option list changed, this means that some command line
+    // If the option list changed, this means that some command line
     // option has just been registered or deregistered.  This can occur in
     // response to things like -load, etc.  If this happens, rescan the options.
-    if (CurOptionList != RegisteredOptionList) {
+    if (OptionListChanged) {
       PositionalOpts.clear();
+      SinkOpts.clear();
       Opts.clear();
-      GetOptionInfo(PositionalOpts, Opts);
-      CurOptionList = RegisteredOptionList;
+      GetOptionInfo(PositionalOpts, SinkOpts, Opts);
+      OptionListChanged = false;
     }
     
     // Check to see if this is a positional argument.  This argument is
@@ -507,9 +520,15 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
     }
 
     if (Handler == 0) {
-      cerr << ProgramName << ": Unknown command line argument '"
-           << argv[i] << "'.  Try: '" << argv[0] << " --help'\n";
-      ErrorParsing = true;
+      if (SinkOpts.empty()) {
+        cerr << ProgramName << ": Unknown command line argument '"
+             << argv[i] << "'.  Try: '" << argv[0] << " --help'\n";
+        ErrorParsing = true;
+      } else {
+        for (std::vector<Option*>::iterator I = SinkOpts.begin(),
+               E = SinkOpts.end(); I != E ; ++I)
+          (*I)->addOccurrence(i, "", argv[i]);
+      }
       continue;
     }
 
@@ -762,6 +781,22 @@ bool parser<bool>::parse(Option &O, const char *ArgName,
   return false;
 }
 
+// parser<boolOrDefault> implementation
+//
+bool parser<boolOrDefault>::parse(Option &O, const char *ArgName,
+                         const std::string &Arg, boolOrDefault &Value) {
+  if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
+      Arg == "1") {
+    Value = BOU_TRUE;
+  } else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
+    Value = BOU_FALSE;
+  } else {
+    return O.error(": '" + Arg +
+                   "' is invalid value for boolean argument! Try 0 or 1");
+  }
+  return false;
+}
+
 // parser<int> implementation
 //
 bool parser<int>::parse(Option &O, const char *ArgName,
@@ -905,8 +940,9 @@ public:
 
     // Get all the options.
     std::vector<Option*> PositionalOpts;
+    std::vector<Option*> SinkOpts;
     std::map<std::string, Option*> OptMap;
-    GetOptionInfo(PositionalOpts, OptMap);
+    GetOptionInfo(PositionalOpts, SinkOpts, OptMap);
     
     // Copy Options into a vector so we can sort them as we like...
     std::vector<std::pair<std::string, Option*> > Opts;
@@ -928,7 +964,7 @@ public:
     }
 
     if (ProgramOverview)
-      cout << "OVERVIEW:" << ProgramOverview << "\n";
+      cout << "OVERVIEW: " << ProgramOverview << "\n";
 
     cout << "USAGE: " << ProgramName << " [options]";