the begginning

dbcon/ddlpackage/sqlparser.h

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/***********************************************************************
+*   $Id: sqlparser.h 9210 2013-01-21 14:10:42Z rdempsey $
+*
+*
+***********************************************************************/
+/** @file
+ *
+ * This contains a class wrapper for the Bison parsing machinery.
+ */
+
+#include <stdexcept>
+#include "ddlpkg.h"
+
+#if defined(_MSC_VER) && defined(xxxDDLPKGSQLPARSER_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+namespace ddlpackage
+{
+
+typedef SqlStatementList ParseTree;
+
+/** @brief SqlParser is a class interface around the Bison parser
+ * machinery for DDL.
+ * 
+ * Example:
+ *
+ * @verbatim
+ 
+     SqlParser parser;
+     parser.Parse(sqlbuf);
+ 
+     or
+ 
+     SqlFileParser parser;
+	 parser.setDefaultSchema("tpch");
+     parser.Parse(sqlFileName);
+ 
+     if (parser.Good()) {
+       const ParseTree &ptree = parser.GetParseTree();
+       cout << ptree.fList.size() << " " << "SQL statements" << endl;
+       cout << ptree << endl;
+     }
+     else {
+       cout << "Parser failed." << endl;
+     }
+ 
+  @endverbatim
+ */
+
+
+class SqlParser
+{
+public:
+    EXPORT SqlParser(void);
+
+    EXPORT virtual ~SqlParser();
+
+    EXPORT int Parse(const char* sqltext);
+
+    /** @brief Return the ParseTree if state is Good.  Otherwise
+      *	throw a logic_error. 
+      */
+    EXPORT const ParseTree& GetParseTree(void);
+
+    /** @brief Tells whether current state resulted from a good
+      * parse. 
+      */
+    EXPORT bool Good(void);
+
+	/** @brief Control bison debugging
+	  */
+    EXPORT void SetDebug(bool debug); 
+
+	 /** @brief Set the default schema to use if it is not
+       * supplied in the DDL statement
+	   *
+	   * @param schema the default schema
+       */
+    EXPORT void setDefaultSchema(std::string schema);
+
+protected:
+    ParseTree fParseTree;
+    int fStatus; ///< return from yyparse() stored here.
+    bool fDebug; ///< Turn on bison debugging.
+};
+
+
+/** SqlFileParser is a testing device.
+  */
+class SqlFileParser : public SqlParser
+{
+public:
+    SqlFileParser();
+    int Parse(const std::string& fileName);
+};
+
+}
+
+#undef EXPORT