Introducing Use-Auto transform for cpp11-migrate

The new Use-Auto transform replaces the type specifier for variable
declarations with the special C++11 'auto' type specifier. For now, the
replacement is done only for variables that are iterators of any of the
std containers and only if the type used is one of those explicitly
allowed by the standard (i.e. not an implementation-specific type).

Reviewers: gribozavr, silvas, klimek
llvm-svn: 176266

1 files changed, 27 insertions, 0 deletions

diff --git a/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoMatchers.h b/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoMatchers.h
new file mode 100644
index 00000000000..db160f8766e
--- /dev/null
+++ b/clang-tools-extra/cpp11-migrate/UseAuto/UseAutoMatchers.h
@@ -0,0 +1,27 @@
+//===-- UseAutoMatchers.h - Matchers for use-auto transform ----*- C++ -*--===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+///  \file
+///  \brief This file contains the declarations for matcher-generating functions
+///  and names for bound nodes found by AST matchers.
+///
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_TOOLS_CLANG_TOOLS_EXTRA_CPP11_MIGRATE_USE_AUTO_MATCHERS_H
+#define LLVM_TOOLS_CLANG_TOOLS_EXTRA_CPP11_MIGRATE_USE_AUTO_MATCHERS_H
+
+#include "clang/ASTMatchers/ASTMatchers.h"
+
+extern const char *DeclNodeId;
+
+/// \brief Create a matcher that matches variable declarations where the type
+/// is an iterator for an std container and has an explicit initializer of the
+/// same type.
+clang::ast_matchers::DeclarationMatcher makeIteratorMatcher();
+
+#endif // LLVM_TOOLS_CLANG_TOOLS_EXTRA_CPP11_MIGRATE_USE_AUTO_MATCHERS_H