add antlr

lib/antlr4/include/atn/LexerChannelAction.h

@@ -0,0 +1,63 @@
+/* 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/LexerAction.h"
+#include "atn/LexerActionType.h"
+
+namespace antlr4 {
+namespace atn {
+
+  using antlr4::Lexer;
+
+  /// <summary>
+  /// Implements the {@code channel} lexer action by calling
+  /// <seealso cref="Lexer#setChannel"/> with the assigned channel.
+  ///
+  /// @author Sam Harwell
+  /// @since 4.2
+  /// </summary>
+  class ANTLR4CPP_PUBLIC LexerChannelAction final : public LexerAction {
+  public:
+    /// <summary>
+    /// Constructs a new {@code channel} action with the specified channel value. </summary>
+    /// <param name="channel"> The channel value to pass to <seealso cref="Lexer#setChannel"/>. </param>
+    LexerChannelAction(int channel);
+
+    /// <summary>
+    /// Gets the channel to use for the <seealso cref="Token"/> created by the lexer.
+    /// </summary>
+    /// <returns> The channel to use for the <seealso cref="Token"/> created by the lexer. </returns>
+    int getChannel() const;
+
+    /// <summary>
+    /// {@inheritDoc} </summary>
+    /// <returns> This method returns <seealso cref="LexerActionType#CHANNEL"/>. </returns>
+    virtual LexerActionType getActionType() const override;
+
+    /// <summary>
+    /// {@inheritDoc} </summary>
+    /// <returns> This method returns {@code false}. </returns>
+    virtual bool isPositionDependent() const override;
+
+    /// <summary>
+    /// {@inheritDoc}
+    ///
+    /// <para>This action is implemented by calling <seealso cref="Lexer#setChannel"/> with the
+    /// value provided by <seealso cref="#getChannel"/>.</para>
+    /// </summary>
+    virtual void execute(Lexer *lexer) override;
+
+    virtual size_t hashCode() const override;
+    virtual bool operator == (const LexerAction &obj) const override;
+    virtual std::string toString() const override;
+
+  private:
+    const int _channel;
+  };
+
+} // namespace atn
+} // namespace antlr4