Add #pragma clang module build/endbuild pragmas for performing a module build

as part of a compilation.

This is intended for two purposes:

1) Writing self-contained test cases for modules: we can now write a single
source file test that builds some number of module files on the side and
imports them.

2) Debugging / test case reduction. A single-source testcase is much more
amenable to reduction, compared to a VFS tarball or .pcm files.

llvm-svn: 305101

1 files changed, 1 insertions, 19 deletions

diff --git a/clang/unittests/Lex/LexerTest.cpp b/clang/unittests/Lex/LexerTest.cpp
index b5a6fd9..e2507d3 100644
--- a/clang/unittests/Lex/LexerTest.cpp
+++ b/clang/unittests/Lex/LexerTest.cpp
@@ -27,24 +27,6 @@ using namespace clang;
 
 namespace {
 
-class VoidModuleLoader : public ModuleLoader {
-  ModuleLoadResult loadModule(SourceLocation ImportLoc, 
-                              ModuleIdPath Path,
-                              Module::NameVisibilityKind Visibility,
-                              bool IsInclusionDirective) override {
-    return ModuleLoadResult();
-  }
-
-  void makeModuleVisible(Module *Mod,
-                         Module::NameVisibilityKind Visibility,
-                         SourceLocation ImportLoc) override { }
-
-  GlobalModuleIndex *loadGlobalModuleIndex(SourceLocation TriggerLoc) override
-    { return nullptr; }
-  bool lookupMissingImports(StringRef Name, SourceLocation TriggerLoc) override
-    { return 0; }
-};
-
 // The test fixture.
 class LexerTest : public ::testing::Test {
 protected:
@@ -64,7 +46,7 @@ protected:
         llvm::MemoryBuffer::getMemBuffer(Source);
     SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));
 
-    VoidModuleLoader ModLoader;
+    TrivialModuleLoader ModLoader;
     MemoryBufferCache PCMCache;
     HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
                             Diags, LangOpts, Target.get());