1 files changed, 75 insertions, 0 deletions
diff --git a/cpp/src/Transform/Parser.cpp b/cpp/src/Transform/Parser.cpp
new file mode 100644
index 00000000000..e7a551339cb
--- /dev/null
+++ b/cpp/src/Transform/Parser.cpp
@@ -0,0 +1,75 @@
+// **********************************************************************
+//
+// Copyright (c) 2003
+// ZeroC, Inc.
+// Billerica, MA, USA
+//
+// All Rights Reserved.
+//
+// Ice is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License version 2 as published by
+// the Free Software Foundation.
+//
+// **********************************************************************
+
+#include <Transform/Parser.h>
+#include <Transform/GrammarUtil.h>
+#include <IceUtil/Mutex.h>
+
+using namespace std;
+
+Transform::DataFactoryPtr Transform::parseDataFactory;
+Transform::ErrorReporterPtr Transform::parseErrorReporter;
+Transform::NodePtr Transform::parseResult;
+int Transform::parseLine;
+
+static string _input;
+static string::size_type _pos;
+static IceUtil::Mutex _parserMutex;
+
+//
+// Parser
+//
+Transform::NodePtr
+Transform::Parser::parse(const string& expr, const DataFactoryPtr& factory, const ErrorReporterPtr& errorReporter)
+{
+    //
+    // The bison grammar is not thread-safe.
+    //
+    IceUtil::Mutex::Lock sync(_parserMutex);
+
+    parseDataFactory = factory;
+    parseErrorReporter = errorReporter;
+    parseLine = 1;
+
+    parseErrorReporter->setExpression(expr);
+
+    _input = expr;
+    _pos = 0;
+
+    int status = transform_parse();
+    if(status != 0)
+    {
+        parseResult = 0;
+    }
+
+    parseErrorReporter->clearExpression();
+    parseErrorReporter = 0;
+
+    return parseResult;
+}
+
+int
+Transform::getInput(char* buf, int maxSize)
+{
+    if(_pos < _input.length())
+    {
+        buf[0] = _input[_pos];
+        _pos++;
+        return 1;
+    }
+    else
+    {
+        return 0;
+    }
+}