1 files changed, 141 insertions, 0 deletions
diff --git a/cpp/src/FreezeScript/GrammarUtil.h b/cpp/src/FreezeScript/GrammarUtil.h
new file mode 100644
index 00000000000..1a438a1f573
--- /dev/null
+++ b/cpp/src/FreezeScript/GrammarUtil.h
@@ -0,0 +1,141 @@
+// **********************************************************************
+//
+// Copyright (c) 2004
+// 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.
+//
+// **********************************************************************
+
+#ifndef FREEZE_SCRIPT_GRAMMAR_UTIL_H
+#define FREEZE_SCRIPT_GRAMMAR_UTIL_H
+
+#include <FreezeScript/Parser.h>
+
+namespace FreezeScript
+{
+
+extern DataFactoryPtr parseDataFactory;
+extern ErrorReporterPtr parseErrorReporter;
+extern NodePtr parseResult;
+extern int parseLine;
+
+int getInput(char*, int);
+
+class StringTok;
+class IdentifierTok;
+class BoolTok;
+class IntegerTok;
+class FloatingTok;
+class NodeListTok;
+
+typedef ::IceUtil::Handle<StringTok> StringTokPtr;
+typedef ::IceUtil::Handle<IdentifierTok> IdentifierTokPtr;
+typedef ::IceUtil::Handle<BoolTok> BoolTokPtr;
+typedef ::IceUtil::Handle<IntegerTok> IntegerTokPtr;
+typedef ::IceUtil::Handle<FloatingTok> FloatingTokPtr;
+typedef ::IceUtil::Handle<NodeListTok> NodeListTokPtr;
+
+// ----------------------------------------------------------------------
+// Token
+// ----------------------------------------------------------------------
+
+class Token : public Node
+{
+public:
+
+    Token() { }
+    virtual DataPtr evaluate(const SymbolTablePtr&) { return 0; }
+    virtual void print(std::ostream&) const {}
+};
+
+// ----------------------------------------------------------------------
+// StringTok
+// ----------------------------------------------------------------------
+
+class StringTok : public Token
+{
+public:
+
+    StringTok() { }
+
+    std::string v;
+};
+
+// ----------------------------------------------------------------------
+// BoolTok
+// ----------------------------------------------------------------------
+
+class BoolTok : public Token
+{
+public:
+
+    BoolTok() { }
+    bool v;
+};
+
+// ----------------------------------------------------------------------
+// IntegerTok
+// ----------------------------------------------------------------------
+
+class IntegerTok : public Token
+{
+public:
+
+    IntegerTok() { }
+    IceUtil::Int64 v;
+};
+
+// ----------------------------------------------------------------------
+// FloatingTok
+// ----------------------------------------------------------------------
+
+class FloatingTok : public Token
+{
+public:
+
+    FloatingTok() { }
+    double v;
+};
+
+class NodeListTok : public Token
+{
+public:
+
+    NodeListTok() { }
+    NodeList v;
+};
+
+} // End of namespace FreezeScript
+
+//
+// Stuff for flex and bison
+//
+
+#define YYSTYPE FreezeScript::NodePtr
+#define YY_DECL int freeze_script_lex(YYSTYPE* yylvalp)
+YY_DECL;
+int freeze_script_parse();
+
+//
+// I must set the initial stack depth to the maximum stack depth to
+// disable bison stack resizing. The bison stack resizing routines use
+// simple malloc/alloc/memcpy calls, which do not work for the
+// YYSTYPE, since YYSTYPE is a C++ type, with constructor, destructor,
+// assignment operator, etc.
+//
+#define YYMAXDEPTH  20000 // 20000 should suffice. Bison default is 10000 as maximum.
+#define YYINITDEPTH YYMAXDEPTH // Initial depth is set to max depth, for the reasons described above.
+
+//
+// Newer bison versions allow to disable stack resizing by defining
+// yyoverflow.
+//
+#define yyoverflow(a, b, c, d, e, f) freeze_script_error(a)
+
+#endif