00001 #ifndef EXPRFACTORY_H
00002 #define EXPRFACTORY_H
00003 
00004 #include "SundanceDefs.h"
00005 
00006 #include "XMLObject.h"
00007 #include "Expr.h"
00008 #include "ExprHashtable.h"
00009 
00010 
00011 namespace Sundance
00012 {
00013 
00014   using namespace TSF;
00015   using std::string;
00016 
00017   using std::ostream;
00018 
00019 
00020   /**
00021    * \ingroup Interface
00022    * ExprFactory contains static methods that construct Sundance
00023    * Expr objects given an XML description of the Expr.
00024    *
00025    */
00026   class ExprFactory
00027     {
00028     public:
00029       static Expr getExprByName(const string& name);
00030 
00031       static Expr createExpr(const XMLObject& xml);
00032 
00033       static Expr processMath(const XMLObject& xml);
00034       static Expr processMathDef(const XMLObject& xml);
00035 
00036       static void getUnksAndVars(Expr& unks, Expr& vars);
00037     private:
00038 
00039 
00040       static Expr processExpr(const XMLObject& xml);
00041       static Expr processAssignment(const XMLObject& xml);
00042       static Expr processSum(const XMLObject& xml);
00043       static Expr processProduct(const XMLObject& xml);
00044       static Expr processReciprocal(const XMLObject& xml);
00045       static Expr processList(const XMLObject& xml);
00046       static Expr processUnaryMinus(const XMLObject& xml);
00047       static Expr processFunction(const XMLObject& xml);
00048       static Expr processConstant(const XMLObject& xml);
00049       static Expr processCoord(const XMLObject& xml);
00050       static Expr processUnknownExpr(const XMLObject& xml);
00051       static Expr processVariationalExpr(const XMLObject& xml);
00052       static Expr processDiscreteExpr(const XMLObject& xml);
00053       static Expr processDerivative(const XMLObject& xml);
00054 
00055       static void checkTag(const XMLObject& xml, const string& tag);
00056 
00057       static ExprHashtable exprs_;
00058     };
00059 
00060 
00061 }
00062 #endif
00063
ExprFactory.h
