Add preliminary clang attribute generation support.
The attribute class generation support is still somewhat limited.
See the accompanying clang commit for more details.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106174 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/ClangAttrEmitter.cpp b/utils/TableGen/ClangAttrEmitter.cpp
new file mode 100644
index 0000000..95bc1a5
--- /dev/null
+++ b/utils/TableGen/ClangAttrEmitter.cpp
@@ -0,0 +1,85 @@
+//===- ClangAttrEmitter.cpp - Generate Clang attribute handling =-*- C++ -*--=//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// These tablegen backends emit Clang attribute processing code
+//
+//===----------------------------------------------------------------------===//
+
+#include "ClangAttrEmitter.h"
+#include "Record.h"
+#include <algorithm>
+
+using namespace llvm;
+
+void ClangAttrClassEmitter::run(raw_ostream &OS) {
+ OS << "// This file is generated by TableGen. Do not edit.\n\n";
+ OS << "#ifndef LLVM_CLANG_ATTR_CLASSES_INC\n";
+ OS << "#define LLVM_CLANG_ATTR_CLASSES_INC\n\n";
+
+ std::vector<Record*> Attrs = Records.getAllDerivedDefinitions("Attr");
+
+ for (std::vector<Record*>::iterator i = Attrs.begin(), e = Attrs.end();
+ i != e; ++i) {
+ Record &R = **i;
+
+ if (R.getValueAsBit("DoNotEmit"))
+ continue;
+
+ OS << "class " << R.getName() << "Attr : public Attr {\n";
+
+ std::vector<Record*> Args = R.getValueAsListOfDefs("Args");
+ std::vector<Record*>::iterator ai, ae = Args.end();
+
+ // FIXME: Handle arguments
+ assert(Args.empty() && "Can't yet handle arguments");
+
+ OS << "\n public:\n";
+ OS << " " << R.getName() << "Attr(";
+
+ // Arguments go here
+
+ OS << ")\n";
+ OS << " : Attr(attr::" << R.getName() << ")";
+
+ // Arguments go here
+
+ OS << " {}\n\n";
+
+ OS << " virtual Attr *clone (ASTContext &C) const;\n";
+ OS << " static bool classof(const Attr *A) { return A->getKind() == "
+ << "attr::" << R.getName() << "; }\n";
+ OS << " static bool classof(const " << R.getName()
+ << "Attr *) { return true; }\n";
+ OS << "};\n\n";
+ }
+
+ OS << "#endif\n";
+}
+
+void ClangAttrListEmitter::run(raw_ostream &OS) {
+ OS << "// This file is generated by TableGen. Do not edit.\n\n";
+
+ OS << "#ifndef LAST_ATTR\n";
+ OS << "#define LAST_ATTR(NAME) ATTR(NAME)\n";
+ OS << "#endif\n\n";
+
+ std::vector<Record*> Attrs = Records.getAllDerivedDefinitions("Attr");
+ std::vector<Record*>::iterator i = Attrs.begin(), e = Attrs.end();
+
+ if (i != e) {
+ // Move the end iterator back to emit the last attribute.
+ for(--e; i != e; ++i)
+ OS << "ATTR(" << (*i)->getName() << ")\n";
+
+ OS << "LAST_ATTR(" << (*i)->getName() << ")\n\n";
+ }
+
+ OS << "#undef LAST_ATTR\n";
+ OS << "#undef ATTR\n";
+}