[llvm-pdbdump] Rewrite dumper using visitor pattern.

This increases the flexibility of how to dump different
symbol types -- necessary for context-sensitive formatting of
symbol types -- and also improves the modularity by allowing
the dumping to be implemented in the actual dumper, as opposed
to in the PDB library.

llvm-svn: 230184

1 files changed, 28 insertions, 0 deletions

diff --git a/llvm/tools/llvm-pdbdump/llvm-pdbdump.h b/llvm/tools/llvm-pdbdump/llvm-pdbdump.h
new file mode 100644
index 00000000000..74a171810c7
--- /dev/null
+++ b/llvm/tools/llvm-pdbdump/llvm-pdbdump.h
@@ -0,0 +1,28 @@
+//===- llvm-pdbdump.h ----------------------------------------- *- C++ --*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVMPDBDUMP_LLVMPDBDUMP_H
+#define LLVM_TOOLS_LLVMPDBDUMP_LLVMPDBDUMP_H
+
+#include "llvm/Support/raw_ostream.h"
+
+namespace llvm {
+struct newline {
+  newline(int IndentWidth) : Width(IndentWidth) {}
+  int Width;
+};
+
+inline raw_ostream &operator<<(raw_ostream &OS, const newline &Indent) {
+  OS << "\n";
+  OS.indent(Indent.Width);
+  return OS;
+}
+}
+
+#endif
\ No newline at end of file