Add the clang library to the repo (with some of my changes, too).

5 files changed, 131 insertions, 0 deletions

diff --git a/clang/examples/PrintFunctionNames/CMakeLists.txt b/clang/examples/PrintFunctionNames/CMakeLists.txt
new file mode 100644
index 0000000..86793ce
--- /dev/null
+++ b/clang/examples/PrintFunctionNames/CMakeLists.txt
@@ -0,0 +1,15 @@
+set(MODULE TRUE)
+
+set( LLVM_USED_LIBS
+  clangFrontend
+  clangAST
+  )
+
+set( LLVM_LINK_COMPONENTS support mc)
+
+add_clang_library(PrintFunctionNames PrintFunctionNames.cpp)
+
+set_target_properties(PrintFunctionNames
+  PROPERTIES
+  LINKER_LANGUAGE CXX
+  PREFIX "")
diff --git a/clang/examples/PrintFunctionNames/Makefile b/clang/examples/PrintFunctionNames/Makefile
new file mode 100644
index 0000000..23a5305
--- /dev/null
+++ b/clang/examples/PrintFunctionNames/Makefile
@@ -0,0 +1,28 @@
+##===- examples/PrintFunctionNames/Makefile ----------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+
+CLANG_LEVEL := ../..
+LIBRARYNAME = PrintFunctionNames
+
+# If we don't need RTTI or EH, there's no reason to export anything
+# from the plugin.
+ifneq ($(REQUIRES_RTTI), 1)
+ifneq ($(REQUIRES_EH), 1)
+EXPORTED_SYMBOL_FILE = $(PROJ_SRC_DIR)/PrintFunctionNames.exports
+endif
+endif
+
+LINK_LIBS_IN_SHARED = 0
+SHARED_LIBRARY = 1
+
+include $(CLANG_LEVEL)/Makefile
+
+ifeq ($(OS),Darwin)
+  LDFLAGS=-Wl,-undefined,dynamic_lookup
+endif
diff --git a/clang/examples/PrintFunctionNames/PrintFunctionNames.cpp b/clang/examples/PrintFunctionNames/PrintFunctionNames.cpp
new file mode 100644
index 0000000..ce8f208
--- /dev/null
+++ b/clang/examples/PrintFunctionNames/PrintFunctionNames.cpp
@@ -0,0 +1,71 @@
+//===- PrintFunctionNames.cpp ---------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Example clang plugin which simply prints the names of all the top-level decls
+// in the input file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/FrontendPluginRegistry.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/AST.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace clang;
+
+namespace {
+
+class PrintFunctionsConsumer : public ASTConsumer {
+public:
+  virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
+    for (DeclGroupRef::iterator i = DG.begin(), e = DG.end(); i != e; ++i) {
+      const Decl *D = *i;
+      if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
+        llvm::errs() << "top-level-decl: \"" << ND->getNameAsString() << "\"\n";
+    }
+
+    return true;
+  }
+};
+
+class PrintFunctionNamesAction : public PluginASTAction {
+protected:
+  ASTConsumer *CreateASTConsumer(CompilerInstance &CI, llvm::StringRef) {
+    return new PrintFunctionsConsumer();
+  }
+
+  bool ParseArgs(const CompilerInstance &CI,
+                 const std::vector<std::string>& args) {
+    for (unsigned i = 0, e = args.size(); i != e; ++i) {
+      llvm::errs() << "PrintFunctionNames arg = " << args[i] << "\n";
+
+      // Example error handling.
+      if (args[i] == "-an-error") {
+        DiagnosticsEngine &D = CI.getDiagnostics();
+        unsigned DiagID = D.getCustomDiagID(
+          DiagnosticsEngine::Error, "invalid argument '" + args[i] + "'");
+        D.Report(DiagID);
+        return false;
+      }
+    }
+    if (args.size() && args[0] == "help")
+      PrintHelp(llvm::errs());
+
+    return true;
+  }
+  void PrintHelp(llvm::raw_ostream& ros) {
+    ros << "Help for PrintFunctionNames plugin goes here\n";
+  }
+
+};
+
+}
+
+static FrontendPluginRegistry::Add<PrintFunctionNamesAction>
+X("print-fns", "print function names");
diff --git a/clang/examples/PrintFunctionNames/PrintFunctionNames.exports b/clang/examples/PrintFunctionNames/PrintFunctionNames.exports
new file mode 100644
index 0000000..0ff590d
--- /dev/null
+++ b/clang/examples/PrintFunctionNames/PrintFunctionNames.exports
@@ -0,0 +1 @@
+_ZN4llvm8Registry*
diff --git a/clang/examples/PrintFunctionNames/README.txt b/clang/examples/PrintFunctionNames/README.txt
new file mode 100644
index 0000000..23ab5f0
--- /dev/null
+++ b/clang/examples/PrintFunctionNames/README.txt
@@ -0,0 +1,16 @@
+This is a simple example demonstrating how to use clang's facility for
+providing AST consumers using a plugin.
+
+Build the plugin by running `make` in this directory.
+
+Once the plugin is built, you can run it using:
+--
+Linux:
+$ clang -cc1 -load ../../Debug+Asserts/lib/libPrintFunctionNames.so -plugin print-fns some-input-file.c
+$ clang -cc1 -load ../../Debug+Asserts/lib/libPrintFunctionNames.so -plugin print-fns -plugin-arg-print-fns help -plugin-arg-print-fns --example-argument some-input-file.c
+$ clang -cc1 -load ../../Debug+Asserts/lib/libPrintFunctionNames.so -plugin print-fns -plugin-arg-print-fns -an-error some-input-file.c
+
+Mac:
+$ clang -cc1 -load ../../Debug+Asserts/lib/libPrintFunctionNames.dylib -plugin print-fns some-input-file.c
+$ clang -cc1 -load ../../Debug+Asserts/lib/libPrintFunctionNames.dylib -plugin print-fns -plugin-arg-print-fns help -plugin-arg-print-fns --example-argument some-input-file.c
+$ clang -cc1 -load ../../Debug+Asserts/lib/libPrintFunctionNames.dylib -plugin print-fns -plugin-arg-print-fns -an-error some-input-file.c