Driver: Add OptTable::ParseOneArg.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66090 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/OptTable.cpp b/lib/Driver/OptTable.cpp
index 070c12e..284e3ba 100644
--- a/lib/Driver/OptTable.cpp
+++ b/lib/Driver/OptTable.cpp
@@ -9,6 +9,8 @@
#include "clang/Driver/Options.h"
+#include "clang/Driver/Arg.h"
+#include "clang/Driver/ArgList.h"
#include "clang/Driver/Option.h"
#include <cassert>
@@ -115,3 +117,24 @@
return Opt;
}
+
+Arg *OptTable::ParseOneArg(const ArgList &Args, unsigned &Index,
+ unsigned IndexEnd) const {
+ const char *Str = Args.getArgString(Index);
+
+ // Anything that doesn't start with '-' is an input.
+ if (Str[0] != '-')
+ return new PositionalArg(getOption(InputOpt), Index++);
+
+ for (unsigned j = UnknownOpt + 1; j < getNumOptions(); ++j) {
+ const char *OptName = getOptionName((options::ID) (j + 1));
+
+ // Arguments are only accepted by options which prefix them.
+ if (memcmp(Str, OptName, strlen(OptName)) == 0)
+ if (Arg *A = getOption((options::ID) (j + 1))->accept(Args, Index))
+ return A;
+ }
+
+ return new PositionalArg(getOption(UnknownOpt), Index++);
+}
+