add antlr source code and ReadMeHEADmain

1 files changed, 34 insertions, 0 deletions

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/PredicateTransition.cpp b/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/PredicateTransition.cpp
new file mode 100644
index 0000000..984fc20
--- /dev/null
+++ b/antlr4-cpp-runtime-4.9.2-source/runtime/src/atn/PredicateTransition.cpp
@@ -0,0 +1,34 @@
+/* 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 "atn/PredicateTransition.h"
+
+using namespace antlr4::atn;
+
+PredicateTransition::PredicateTransition(ATNState *target, size_t ruleIndex, size_t predIndex, bool isCtxDependent) : AbstractPredicateTransition(target), ruleIndex(ruleIndex), predIndex(predIndex), isCtxDependent(isCtxDependent) {
+}
+
+Transition::SerializationType PredicateTransition::getSerializationType() const {
+  return PREDICATE;
+}
+
+bool PredicateTransition::isEpsilon() const {
+  return true;
+}
+
+bool PredicateTransition::matches(size_t /*symbol*/, size_t /*minVocabSymbol*/, size_t /*maxVocabSymbol*/) const {
+  return false;
+}
+
+Ref<SemanticContext::Predicate> PredicateTransition::getPredicate() const {
+  return std::make_shared<SemanticContext::Predicate>(ruleIndex, predIndex, isCtxDependent);
+}
+
+std::string PredicateTransition::toString() const {
+  return "PREDICATE " + Transition::toString() + " { ruleIndex: " + std::to_string(ruleIndex) +
+    ", predIndex: " + std::to_string(predIndex) + ", isCtxDependent: " + std::to_string(isCtxDependent) + " }";
+
+  // Generate and add a predicate context here?
+}