add antlr source code and ReadMe

[toc] / antlr4-cpp-runtime-4.9.2-source / runtime / src / atn / PlusLoopbackState.h

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/PlusLoopbackState.h b/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/PlusLoopbackState.h
new file mode 100644 (file)
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+++ b/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/PlusLoopbackState.h
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+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+ * Use of this file is governed by the BSD 3-clause license that
+ * can be found in the LICENSE.txt file in the project root.
+ */
+
+#pragma once
+
+#include "atn/DecisionState.h"
+
+namespace antlr4 {
+namespace atn {
+
+  /// Decision state for {@code A+} and {@code (A|B)+}. It has two transitions:
+  /// one to the loop back to start of the block and one to exit.
+  class ANTLR4CPP_PUBLIC PlusLoopbackState final : public DecisionState {
+
+  public:
+    virtual size_t getStateType() override;
+  };
+
+} // namespace atn
+} // namespace antlr4