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+//===- ClangASTNodesEmitter.h - Generate Clang AST node tables -*- 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 AST node tables
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CLANGAST_EMITTER_H
+#define CLANGAST_EMITTER_H
+
+#include "llvm/TableGen/TableGenBackend.h"
+#include "llvm/TableGen/Record.h"
+#include <string>
+#include <cctype>
+#include <map>
+
+namespace llvm {
+
+/// ClangASTNodesEmitter - The top-level class emits .inc files containing
+/// declarations of Clang statements.
+///
+class ClangASTNodesEmitter : public TableGenBackend {
+ // A map from a node to each of its derived nodes.
+ typedef std::multimap<Record*, Record*> ChildMap;
+ typedef ChildMap::const_iterator ChildIterator;
+
+ RecordKeeper &Records;
+ Record Root;
+ const std::string &BaseSuffix;
+
+ // Create a macro-ized version of a name
+ static std::string macroName(std::string S) {
+ for (unsigned i = 0; i < S.size(); ++i)
+ S[i] = std::toupper(S[i]);
+
+ return S;
+ }
+
+ // Return the name to be printed in the base field. Normally this is
+ // the record's name plus the base suffix, but if it is the root node and
+ // the suffix is non-empty, it's just the suffix.
+ std::string baseName(Record &R) {
+ if (&R == &Root && !BaseSuffix.empty())
+ return BaseSuffix;
+
+ return R.getName() + BaseSuffix;
+ }
+
+ std::pair<Record *, Record *> EmitNode (const ChildMap &Tree, raw_ostream& OS,
+ Record *Base);
+public:
+ explicit ClangASTNodesEmitter(RecordKeeper &R, const std::string &N,
+ const std::string &S)
+ : Records(R), Root(N, SMLoc(), R), BaseSuffix(S)
+ {}
+
+ // run - Output the .inc file contents
+ void run(raw_ostream &OS);
+};
+
+/// ClangDeclContextEmitter - Emits an addendum to a .inc file to enumerate the
+/// clang declaration contexts.
+///
+class ClangDeclContextEmitter : public TableGenBackend {
+ RecordKeeper &Records;
+
+public:
+ explicit ClangDeclContextEmitter(RecordKeeper &R)
+ : Records(R)
+ {}
+
+ // run - Output the .inc file contents
+ void run(raw_ostream &OS);
+};
+
+} // End llvm namespace
+
+#endif