Copy clang/Driver/<Option parsing stuff> to llvm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169344 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 130 insertions, 0 deletions

diff --git a/unittests/Option/CMakeLists.txt b/unittests/Option/CMakeLists.txt
new file mode 100644
index 0000000000..185d503912
--- /dev/null
+++ b/unittests/Option/CMakeLists.txt
@@ -0,0 +1,15 @@
+set(LLVM_LINK_COMPONENTS
+  Option
+  Support
+  )
+
+set(LLVM_TARGET_DEFINITIONS Opts.td)
+
+tablegen(LLVM Opts.inc -gen-opt-parser-defs)
+add_public_tablegen_target(OptsTestTableGen)
+
+add_llvm_unittest(OptionTests
+  OptionParsingTest.cpp
+  )
+
+add_dependencies(OptionTests OptsTestTableGen)
diff --git a/unittests/Option/OptionParsingTest.cpp b/unittests/Option/OptionParsingTest.cpp
new file mode 100644
index 0000000000..10e4be8dc1
--- /dev/null
+++ b/unittests/Option/OptionParsingTest.cpp
@@ -0,0 +1,102 @@
+//===- unittest/Support/OptionParsingTest.cpp - OptTable tests ------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Option/Option.h"
+
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace llvm::opt;
+
+enum ID {
+  OPT_INVALID = 0, // This is not an option ID.
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, FLAGS, PARAM, \
+              HELPTEXT, METAVAR) OPT_##ID,
+#include "Opts.inc"
+  LastOption
+#undef OPTION
+};
+
+#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
+#include "Opts.inc"
+#undef PREFIX
+
+static const OptTable::Info InfoTable[] = {
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, FLAGS, PARAM, \
+               HELPTEXT, METAVAR)   \
+  { PREFIX, NAME, HELPTEXT, METAVAR, OPT_##ID, Option::KIND##Class, PARAM, \
+    FLAGS, OPT_##GROUP, OPT_##ALIAS },
+#include "Opts.inc"
+#undef OPTION
+};
+
+namespace {
+class TestOptTable : public OptTable {
+public:
+  TestOptTable()
+    : OptTable(InfoTable, sizeof(InfoTable) / sizeof(InfoTable[0])) {}
+};
+}
+
+const char *Args[] = {
+  "-A",
+  "-Bhi",
+  "--C=desu",
+  "-C", "bye",
+  "-D,adena",
+  "-E", "apple", "bloom",
+  "-Fblarg",
+  "-F", "42",
+  "-Gchuu", "2"
+  };
+
+TEST(Support, OptionParsing) {
+  TestOptTable T;
+  unsigned MAI, MAC;
+  InputArgList *AL = T.ParseArgs(Args, Args + (sizeof(Args) / sizeof(Args[0])), MAI, MAC);
+  
+  // Check they all exist.
+  EXPECT_TRUE(AL->hasArg(OPT_A));
+  EXPECT_TRUE(AL->hasArg(OPT_B));
+  EXPECT_TRUE(AL->hasArg(OPT_C));
+  EXPECT_TRUE(AL->hasArg(OPT_D));
+  EXPECT_TRUE(AL->hasArg(OPT_E));
+  EXPECT_TRUE(AL->hasArg(OPT_F));
+  EXPECT_TRUE(AL->hasArg(OPT_G));
+
+  // Check the values.
+  EXPECT_EQ(AL->getLastArgValue(OPT_B), "hi");
+  EXPECT_EQ(AL->getLastArgValue(OPT_C), "bye");
+  EXPECT_EQ(AL->getLastArgValue(OPT_D), "adena");
+  std::vector<std::string> Es = AL->getAllArgValues(OPT_E);
+  EXPECT_EQ(Es[0], "apple");
+  EXPECT_EQ(Es[1], "bloom");
+  EXPECT_EQ(AL->getLastArgValue(OPT_F), "42");
+  std::vector<std::string> Gs = AL->getAllArgValues(OPT_G);
+  EXPECT_EQ(Gs[0], "chuu");
+  EXPECT_EQ(Gs[1], "2");
+
+  // Check the help text.
+  std::string Help;
+  raw_string_ostream RSO(Help);
+  T.PrintHelp(RSO, "test", "title!");
+  EXPECT_NE(Help.find("-A"), std::string::npos);
+
+  // Test aliases.
+  arg_iterator Cs = AL->filtered_begin(OPT_C);
+  ASSERT_NE(Cs, AL->filtered_end());
+  EXPECT_EQ(StringRef((*Cs)->getValue()), "desu");
+  ArgStringList ASL;
+  (*Cs)->render(*AL, ASL);
+  ASSERT_EQ(ASL.size(), 2u);
+  EXPECT_EQ(StringRef(ASL[0]), "-C");
+  EXPECT_EQ(StringRef(ASL[1]), "desu");
+}
diff --git a/unittests/Option/Opts.td b/unittests/Option/Opts.td
new file mode 100644
index 0000000000..3d6242f518
--- /dev/null
+++ b/unittests/Option/Opts.td
@@ -0,0 +1,13 @@
+include "llvm/Option/OptParser.td"
+
+def A : Flag<["-"], "A">, HelpText<"The A option">;
+def B : Joined<["-"], "B">, HelpText<"The B option">, MetaVarName<"B">;
+def C : Separate<["-"], "C">, HelpText<"The C option">, MetaVarName<"C">;
+def D : CommaJoined<["-"], "D">, HelpText<"The D option">, MetaVarName<"D">;
+def E : MultiArg<["-"], "E", 2>;
+def F : JoinedOrSeparate<["-"], "F">, HelpText<"The F option">, MetaVarName<"F">;
+def G : JoinedAndSeparate<["-"], "G">, HelpText<"The G option">, MetaVarName<"G">;
+
+def Ceq : Joined<["-", "--"], "C=">, Alias<C>;
+
+def H : Flag<["-"], "H">, Flags<[HelpHidden]>;