add antlr source code and ReadMeHEADmain

1 files changed, 46 insertions, 0 deletions

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/NoViableAltException.cpp b/antlr4-cpp-runtime-4.9.2-source/runtime/src/NoViableAltException.cpp
new file mode 100644
index 0000000..273c208
--- /dev/null
+++ b/antlr4-cpp-runtime-4.9.2-source/runtime/src/NoViableAltException.cpp
@@ -0,0 +1,46 @@
+/* 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.
+ */
+
+#include "Parser.h"
+
+#include "NoViableAltException.h"
+
+using namespace antlr4;
+
+namespace {
+
+// Create a normal shared pointer if the configurations are to be deleted. If not, then
+// the shared pointer is created with a deleter that does nothing.
+Ref<atn::ATNConfigSet> buildConfigsRef(atn::ATNConfigSet *configs, bool deleteConfigs) {
+  if (deleteConfigs) {
+    return Ref<atn::ATNConfigSet>(configs);
+  } else {
+    return Ref<atn::ATNConfigSet>(configs, [](atn::ATNConfigSet *){});
+  }
+}
+
+}
+
+NoViableAltException::NoViableAltException(Parser *recognizer)
+  : NoViableAltException(recognizer, recognizer->getTokenStream(), recognizer->getCurrentToken(),
+                         recognizer->getCurrentToken(), nullptr, recognizer->getContext(), false) {
+}
+
+NoViableAltException::NoViableAltException(Parser *recognizer, TokenStream *input,Token *startToken,
+  Token *offendingToken, atn::ATNConfigSet *deadEndConfigs, ParserRuleContext *ctx, bool deleteConfigs)
+  : RecognitionException("No viable alternative", recognizer, input, ctx, offendingToken),
+    _deadEndConfigs(buildConfigsRef(deadEndConfigs, deleteConfigs)), _startToken(startToken) {
+}
+
+NoViableAltException::~NoViableAltException() {
+}
+
+Token* NoViableAltException::getStartToken() const {
+  return _startToken;
+}
+
+atn::ATNConfigSet* NoViableAltException::getDeadEndConfigs() const {
+  return _deadEndConfigs.get();
+}