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+/* Starshatter OpenSource Distribution
+ Copyright (c) 1997-2004, Destroyer Studios LLC.
+ All Rights Reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+ * Neither the name "Destroyer Studios" nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+ SUBSYSTEM: Parser
+ FILE: term.h
+ AUTHOR: John DiCamillo
+
+
+ OVERVIEW
+ ========
+ Declaration of the Abstract Syntax Tree classes
+*/
+
+
+#ifndef TERM_H
+#define TERM_H
+
+#include "Text.h"
+#include "List.h"
+
+// +-------------------------------------------------------------------+
+
+class Term;
+class TermBool;
+class TermNumber;
+class TermText;
+class TermArray;
+class TermDef;
+class TermStruct;
+
+// +-------------------------------------------------------------------+
+
+class Term
+{
+public:
+ static const char* TYPENAME() { return "Term"; }
+
+ Term() { }
+ virtual ~Term() { }
+
+ virtual int operator==(const Term& rhs) const { return 0; }
+
+ virtual void print(int level=10) { }
+
+ // conversion tests
+ virtual Term* touch() { return this; }
+ virtual TermBool* isBool() { return 0; }
+ virtual TermNumber* isNumber() { return 0; }
+ virtual TermText* isText() { return 0; }
+ virtual TermArray* isArray() { return 0; }
+ virtual TermDef* isDef() { return 0; }
+ virtual TermStruct* isStruct() { return 0; }
+};
+
+Term* error(char*, char* = 0);
+
+// +-------------------------------------------------------------------+
+
+typedef List<Term> TermList;
+typedef ListIter<Term> TermListIter;
+
+// +-------------------------------------------------------------------+
+
+class TermBool : public Term
+{
+public:
+ static const char* TYPENAME() { return "TermBool"; }
+
+ TermBool(bool v) : val(v) { }
+
+ virtual void print(int level=10);
+ virtual TermBool* isBool() { return this; }
+ bool value() const { return val; }
+
+private:
+ bool val;
+};
+
+// +-------------------------------------------------------------------+
+
+class TermNumber : public Term
+{
+public:
+ static const char* TYPENAME() { return "TermNumber"; }
+
+ TermNumber(double v) : val(v) { }
+
+ virtual void print(int level=10);
+ virtual TermNumber* isNumber() { return this; }
+ double value() const { return val; }
+
+private:
+ double val;
+};
+
+// +-------------------------------------------------------------------+
+
+class TermText : public Term
+{
+public:
+ static const char* TYPENAME() { return "TermText"; }
+
+ TermText(const Text& v) : val(v) { }
+
+ virtual void print(int level=10);
+ virtual TermText* isText() { return this; }
+ Text value() const { return val; }
+
+private:
+ Text val;
+};
+
+// +-------------------------------------------------------------------+
+
+class TermArray : public Term
+{
+public:
+ static const char* TYPENAME() { return "TermArray"; }
+
+ TermArray(TermList* elist);
+ virtual ~TermArray();
+
+ virtual void print(int level=10);
+ virtual TermArray* isArray() { return this; }
+ TermList* elements() { return elems; }
+
+private:
+ TermList* elems;
+};
+
+// +-------------------------------------------------------------------+
+
+class TermStruct : public Term
+{
+public:
+ static const char* TYPENAME() { return "TermStruct"; }
+
+ TermStruct(TermList* elist);
+ virtual ~TermStruct();
+
+ virtual void print(int level=10);
+
+ virtual TermStruct* isStruct() { return this; }
+ TermList* elements() { return elems; }
+
+private:
+ TermList* elems;
+};
+
+// +-------------------------------------------------------------------+
+
+class TermDef : public Term
+{
+public:
+ static const char* TYPENAME() { return "TermDef"; }
+
+ TermDef(TermText* n, Term* v) : mname(n), mval(v) { }
+ virtual ~TermDef();
+
+ virtual void print(int level=10);
+ virtual TermDef* isDef() { return this; }
+
+ virtual TermText* name() { return mname; }
+ virtual Term* term() { return mval; }
+
+private:
+ TermText* mname;
+ Term* mval;
+};
+
+#endif