add antlr source code and ReadMeHEADmain

1 files changed, 30 insertions, 0 deletions

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/RangeTransition.cpp b/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/RangeTransition.cpp
new file mode 100644
index 0000000..58d668c
--- /dev/null
+++ b/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/RangeTransition.cpp
@@ -0,0 +1,30 @@
+/* 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 "misc/IntervalSet.h"
+
+#include "atn/RangeTransition.h"
+
+using namespace antlr4;
+using namespace antlr4::atn;
+
+RangeTransition::RangeTransition(ATNState *target, size_t from, size_t to) : Transition(target), from(from), to(to) {
+}
+
+Transition::SerializationType RangeTransition::getSerializationType() const {
+  return RANGE;
+}
+
+misc::IntervalSet RangeTransition::label() const {
+  return misc::IntervalSet::of((int)from, (int)to);
+}
+
+bool RangeTransition::matches(size_t symbol, size_t /*minVocabSymbol*/, size_t /*maxVocabSymbol*/) const {
+  return symbol >= from && symbol <= to;
+}
+
+std::string RangeTransition::toString() const {
+  return "RANGE " + Transition::toString() + " { from: " + std::to_string(from) + ", to: " + std::to_string(to) + " }";
+}