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

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/ProxyErrorListener.h b/antlr4-cpp-runtime-4.9.2-source/runtime/src/ProxyErrorListener.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 "ANTLRErrorListener.h"
+#include "Exceptions.h"
+
+namespace antlr4 {
+
+  /// This implementation of ANTLRErrorListener dispatches all calls to a
+  /// collection of delegate listeners. This reduces the effort required to support multiple
+  /// listeners.
+  class ANTLR4CPP_PUBLIC ProxyErrorListener : public ANTLRErrorListener {
+  private:
+    std::set<ANTLRErrorListener *> _delegates; // Not owned.
+
+  public:
+    void addErrorListener(ANTLRErrorListener *listener);
+    void removeErrorListener(ANTLRErrorListener *listener);
+    void removeErrorListeners();
+
+    void syntaxError(Recognizer *recognizer, Token *offendingSymbol, size_t line, size_t charPositionInLine,
+                     const std::string &msg, std::exception_ptr e) override;
+
+    virtual void reportAmbiguity(Parser *recognizer, const dfa::DFA &dfa, size_t startIndex, size_t stopIndex, bool exact,
+                                 const antlrcpp::BitSet &ambigAlts, atn::ATNConfigSet *configs) override;
+
+    virtual void reportAttemptingFullContext(Parser *recognizer, const dfa::DFA &dfa, size_t startIndex, size_t stopIndex,
+      const antlrcpp::BitSet &conflictingAlts, atn::ATNConfigSet *configs) override;
+
+    virtual void reportContextSensitivity(Parser *recognizer, const dfa::DFA &dfa, size_t startIndex, size_t stopIndex,
+                                          size_t prediction, atn::ATNConfigSet *configs) override;
+  };
+
+} // namespace antlr4