add antlr source code and ReadMeHEADmain

1 files changed, 29 insertions, 0 deletions

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/ANTLRFileStream.cpp b/antlr4-cpp-runtime-4.9.2-source/runtime/src/ANTLRFileStream.cpp
new file mode 100644
index 0000000..62061bb
--- /dev/null
+++ b/antlr4-cpp-runtime-4.9.2-source/runtime/src/ANTLRFileStream.cpp
@@ -0,0 +1,29 @@
+/* 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 "support/StringUtils.h"
+
+#include "ANTLRFileStream.h"
+
+using namespace antlr4;
+
+void ANTLRFileStream::loadFromFile(const std::string &fileName) {
+  _fileName = fileName;
+  if (_fileName.empty()) {
+    return;
+  }
+
+#ifdef _MSC_VER
+  std::ifstream stream(antlrcpp::s2ws(fileName), std::ios::binary);
+#else
+  std::ifstream stream(fileName, std::ios::binary);
+#endif
+
+  ANTLRInputStream::load(stream);
+}
+
+std::string ANTLRFileStream::getSourceName() const {
+  return _fileName;
+}