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Expr.cpp
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Expr.cpp
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#include "Expr.h"
Expr::Expr()
{
}
void Expr::register_symbol_table(exprtk::symbol_table<double> &Symbol_Table)
{
expression.register_symbol_table(Symbol_Table);
}
int Expr::compile(const std::string &Expr_Str)
{
expr_str = Expr_Str;
return parser.compile(expr_str, expression);
}
double Expr::evaluate()
{
return expression.value();
}
//// ExprSet
ExprSet::ExprSet()
{
}
void ExprSet::add_symbol_table(exprtk::symbol_table<double>* Symbol_Table)
{
symbol_table = Symbol_Table;
for(auto expression=expressions.begin(); expression!=expressions.end(); ++expression)
expression->second.register_symbol_table(*symbol_table);
}
int ExprSet::compile(const std::string& Name, const std::string &Expr_Str)
{
expressions[Name].register_symbol_table(*symbol_table);
int result = parser.compile(Expr_Str, expressions[Name]);
if(result)
expr_strs[Name] = Expr_Str;
else
expressions.erase(Name);
return result;
}
double ExprSet::evaluate(const std::string &Name)
{
return expressions[Name].value();
}