libclang 6.0.1 (new formula)

Formula/libclang.rb

@@ -0,0 +1,109 @@
+class Libclang < Formula
+  desc "C interface to clang"
+  homepage "https://clang.llvm.org/doxygen/group__CINDEX.html"
+  url "https://releases.llvm.org/6.0.1/llvm-6.0.1.src.tar.xz"
+  sha256 "b6d6c324f9c71494c0ccaf3dac1f16236d970002b42bb24a6c9e1634f7d0f4e2"
+
+  keg_only :provided_by_macos
+
+  depends_on "cmake" => :build
+
+  resource "clang" do
+    url "https://releases.llvm.org/6.0.1/cfe-6.0.1.src.tar.xz"
+    sha256 "7c243f1485bddfdfedada3cd402ff4792ea82362ff91fbdac2dae67c6026b667"
+  end
+
+  def install
+    # Apple's libstdc++ is too old to build LLVM
+    ENV.libcxx if ENV.compiler == :clang
+
+    (buildpath/"tools/clang").install resource("clang")
+
+    mktemp do
+      system "cmake", "-G",
+                      "Unix Makefiles",
+                      buildpath,
+                      *std_cmake_args,
+                      "-DLLVM_OPTIMIZED_TABLEGEN=ON",
+                      "-DLLVM_INCLUDE_DOCS=OFF",
+                      "-DLLVM_TARGETS_TO_BUILD=all",
+                      "-DLIBOMP_ARCH=x86_64"
+      system "make", "libclang"
+      system "make", "install"
+    end
+
+    (share/"clang/tools").install Dir["tools/clang/tools/scan-{build,view}"]
+  end
+
+  test do
+    assert_equal prefix.to_s, shell_output("#{bin}/llvm-config --prefix").chomp
+
+    (testpath/"sample.cpp").write <<~EOS
+      int main("aa", /* "bb"= */1 )
+    EOS
+
+    (testpath/"libclangtest.cpp").write <<~EOS
+      #include <stdio.h>
+      #include <stdlib.h>
+      #include <clang-c/Index.h>
+
+      unsigned get_filesize(const char *fileName) {
+        FILE *fp = fopen(fileName, "r");
+        fseek(fp, 0, SEEK_END);
+        auto size = ftell(fp);
+        fclose(fp);
+        return size;
+      }
+
+      CXSourceRange get_filerange(const CXTranslationUnit &tu, const char *filename) {
+        CXFile file = clang_getFile(tu, filename);
+        auto fileSize = get_filesize(filename);
+
+        CXSourceLocation topLoc  = clang_getLocationForOffset(tu, file, 0);
+        CXSourceLocation lastLoc = clang_getLocationForOffset(tu, file, fileSize);
+        if (clang_equalLocations(topLoc,  clang_getNullLocation()) ||
+            clang_equalLocations(lastLoc, clang_getNullLocation()) ) {
+          exit(1);
+        }
+
+        CXSourceRange range = clang_getRange(topLoc, lastLoc);
+        if (clang_Range_isNull(range)) {
+          exit(1);
+        }
+
+        return range;
+      }
+
+      int main(int argc, char **argv) {
+        const auto filename = argv[1];
+        CXIndex index = clang_createIndex(1, 0);
+        CXTranslationUnit tu = clang_parseTranslationUnit(index, filename, NULL, 0, NULL, 0, 0);
+        if (tu == NULL) {
+          return 1;
+        }
+
+        CXSourceRange range = get_filerange(tu, filename);
+        CXToken *tokens;
+        unsigned numTokens;
+        clang_tokenize(tu, range, &tokens, &numTokens);
+        printf("NumTokens: %d\\n", numTokens);
+
+        clang_disposeTokens(tu, tokens, numTokens);
+        clang_disposeTranslationUnit(tu);
+        clang_disposeIndex(index);
+        return 0;
+      }
+    EOS
+
+    system "#{bin}/clang", "-L#{lib}",
+                           "-I#{include}", "-lclang",
+                           "libclangtest.cpp", "-o", "libclangtest"
+    testresult = shell_output("./libclangtest sample.cpp")
+
+    expected_result = <<~EOS
+      NumTokens: 8
+    EOS
+
+    assert_equal expected_result.strip, testresult.strip
+  end
+end