[llvm] r212986 - Support: Fix option handling when using cl::Required with aliasopt
Justin Bogner
mail at justinbogner.com
Mon Jul 14 13:53:57 PDT 2014
Author: bogner
Date: Mon Jul 14 15:53:57 2014
New Revision: 212986
URL: http://llvm.org/viewvc/llvm-project?rev=212986&view=rev
Log:
Support: Fix option handling when using cl::Required with aliasopt
Until now, attempting to create an alias of a required option would
complain if the user supplied the alias, because the required option
didn't have a value. Similarly, if you said the alias was required,
then using the base option would complain that the alias wasn't
supplied. Lastly, if you put required on both, *neither* option would
work.
By changning alias to overload addOccurrence and setting cl::Required
on the original option, we can get this to behave in a more useful
way. I've also added a test and updated a user that was getting this
wrong.
Modified:
llvm/trunk/include/llvm/Support/CommandLine.h
llvm/trunk/tools/llvm-profdata/llvm-profdata.cpp
llvm/trunk/unittests/Support/CommandLineTest.cpp
Modified: llvm/trunk/include/llvm/Support/CommandLine.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/CommandLine.h?rev=212986&r1=212985&r2=212986&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/CommandLine.h (original)
+++ llvm/trunk/include/llvm/Support/CommandLine.h Mon Jul 14 15:53:57 2014
@@ -270,8 +270,8 @@ public:
// addOccurrence - Wrapper around handleOccurrence that enforces Flags.
//
- bool addOccurrence(unsigned pos, StringRef ArgName,
- StringRef Value, bool MultiArg = false);
+ virtual bool addOccurrence(unsigned pos, StringRef ArgName,
+ StringRef Value, bool MultiArg = false);
// Prints option name followed by message. Always returns true.
bool error(const Twine &Message, StringRef ArgName = StringRef());
@@ -1649,6 +1649,10 @@ class alias : public Option {
StringRef Arg) override {
return AliasFor->handleOccurrence(pos, AliasFor->ArgStr, Arg);
}
+ bool addOccurrence(unsigned pos, StringRef /*ArgName*/,
+ StringRef Value, bool MultiArg = false) override {
+ return AliasFor->addOccurrence(pos, AliasFor->ArgStr, Value, MultiArg);
+ }
// Handle printing stuff...
size_t getOptionWidth() const override;
void printOptionInfo(size_t GlobalWidth) const override;
Modified: llvm/trunk/tools/llvm-profdata/llvm-profdata.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-profdata/llvm-profdata.cpp?rev=212986&r1=212985&r2=212986&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-profdata/llvm-profdata.cpp (original)
+++ llvm/trunk/tools/llvm-profdata/llvm-profdata.cpp Mon Jul 14 15:53:57 2014
@@ -38,9 +38,9 @@ int merge_main(int argc, const char *arg
cl::desc("<filenames...>"));
cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
- cl::init("-"),
+ cl::init("-"), cl::Required,
cl::desc("Output file"));
- cl::alias OutputFilenameA("o", cl::desc("Alias for --output"), cl::Required,
+ cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
cl::aliasopt(OutputFilename));
cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
Modified: llvm/trunk/unittests/Support/CommandLineTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/Support/CommandLineTest.cpp?rev=212986&r1=212985&r2=212986&view=diff
==============================================================================
--- llvm/trunk/unittests/Support/CommandLineTest.cpp (original)
+++ llvm/trunk/unittests/Support/CommandLineTest.cpp Mon Jul 14 15:53:57 2014
@@ -212,4 +212,23 @@ TEST(CommandLineTest, AliasesWithArgumen
}
}
+void testAliasRequired(int argc, const char *const *argv) {
+ StackOption<std::string> Option("option", cl::Required);
+ cl::alias Alias("o", llvm::cl::aliasopt(Option));
+
+ cl::ParseCommandLineOptions(argc, argv);
+ EXPECT_EQ("x", Option);
+ EXPECT_EQ(1, Option.getNumOccurrences());
+
+ Alias.removeArgument();
+}
+
+TEST(CommandLineTest, AliasRequired) {
+ const char *opts1[] = { "-tool", "-option=x" };
+ const char *opts2[] = { "-tool", "-o", "x" };
+ testAliasRequired(array_lengthof(opts1), opts1);
+ testAliasRequired(array_lengthof(opts2), opts2);
+}
+
+
} // anonymous namespace
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