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

diff --git a/antlr4-cpp-runtime-4.9.2-source/runtime/src/RuntimeMetaData.cpp b/antlr4-cpp-runtime-4.9.2-source/runtime/src/RuntimeMetaData.cpp
new file mode 100644 (file)
index 0000000..37a6865
--- /dev/null
+++ b/antlr4-cpp-runtime-4.9.2-source/runtime/src/RuntimeMetaData.cpp
@@ -0,0 +1,53 @@
+/* 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 "RuntimeMetaData.h"
+
+using namespace antlr4;
+
+const std::string RuntimeMetaData::VERSION = "4.9.2";
+
+std::string RuntimeMetaData::getRuntimeVersion() {
+  return VERSION;
+}
+
+void RuntimeMetaData::checkVersion(const std::string &generatingToolVersion, const std::string &compileTimeVersion) {
+  std::string runtimeVersion = VERSION;
+  bool runtimeConflictsWithGeneratingTool = false;
+  bool runtimeConflictsWithCompileTimeTool = false;
+
+  if (generatingToolVersion != "") {
+    runtimeConflictsWithGeneratingTool = runtimeVersion != generatingToolVersion
+      && getMajorMinorVersion(runtimeVersion) != getMajorMinorVersion(generatingToolVersion);
+  }
+
+  runtimeConflictsWithCompileTimeTool = runtimeVersion != compileTimeVersion
+    && getMajorMinorVersion(runtimeVersion) != getMajorMinorVersion(compileTimeVersion);
+
+  if (runtimeConflictsWithGeneratingTool) {
+    std::cerr << "ANTLR Tool version " << generatingToolVersion << " used for code generation does not match "
+      "the current runtime version " << runtimeVersion << std::endl;
+  }
+  if (runtimeConflictsWithCompileTimeTool) {
+    std::cerr << "ANTLR Runtime version " << compileTimeVersion << " used for parser compilation does not match "
+      "the current runtime version " << runtimeVersion << std::endl;
+  }
+}
+
+std::string RuntimeMetaData::getMajorMinorVersion(const std::string &version) {
+  size_t firstDot = version.find('.');
+  size_t secondDot = firstDot != std::string::npos ? version.find('.', firstDot + 1) : std::string::npos;
+  size_t firstDash = version.find('-');
+  size_t referenceLength = version.size();
+  if (secondDot != std::string::npos) {
+    referenceLength = std::min(referenceLength, secondDot);
+  }
+
+  if (firstDash != std::string::npos) {
+    referenceLength = std::min(referenceLength, firstDash);
+  }
+
+  return version.substr(0, referenceLength);
+}