Examples of jmathexpr.util.context.Statement

jmathexpr.util.context.Statement
This class represents a statement, that is an expression and a command that must be executed using the expression. @author Elemér Furka

    }


    public void setActual(String expression) {
        actual = expression;
        
        Statement statement = service.add(expression);
        
        service.execute(statement);
    }

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    private final ExpressionParser parser = new ExpressionParser();
    
    @Override
    public Statement add(String stmt) {
        Statement statement = parser.parseStatement(stmt);
        
        ExpressionContext.getInstance().addStatement(statement);
        
        return statement;
    }

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            case Solve:
                Equation eq = (Equation) statement.getExpression();
                
                try {
                    Set result = eq.solve();
                    Statement expression = new Statement(Command.Expression, result);
                    
                    ExpressionContext.getInstance().addStatement(expression);
                } catch (EquationSolveException e) {
                    System.err.println(e);
                }

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                        this, x.name(), expr, satisfied);
                if (!satisfied) {
                    Equality eq = new Equality(lhs.evaluate(), rhs.evaluate());
                    
                    ExpressionContext.getInstance().addStatement(
                            new Statement(Command.Expression, eq));
                }
                
                return satisfied;
            } else {
                Equality eq = (Equality) evaluated;

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        return false;
    }
    
    private void addToContext(Equality equality) {
        ExpressionContext.getInstance().addStatement(
                new Statement(Command.Expression, equality));
    }

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     */
    Statement getStatement() {
        if (statement != null) {
            return statement;
        } else {
            return new Statement(Command.Expression, getExpression());
        }
    }

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        Variable tmp = (Variable) stack.pop();
        
        Variable x = new Variable(tmp.name(), domain);
        Expression contains = new ElementOf(x, domain);
        
        statement = new Statement(Command.Let, contains);
        
        ExpressionContext.getInstance().addVariable(x);
        stack.push(contains);
    }

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    @Override
    public void exitSolve(ExpressionsParser.SolveContext ctx) {
        Equation equation = (Equation) stack.pop();
        
        statement = new Statement(Command.Solve, equation);
        
        stack.push(equation);
    }

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Related Classes of jmathexpr.util.context.Statement

jmathexpr.arithmetic.equation.Equation

jmathexpr.arithmetic.equation.rule.RuleMachine

jmathexpr.util.parser.AntlrExpressionListener

jmathexpr.web.controller.ExpressionsBean

jmathexpr.web.ejb.ExpressionService

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