public BinaryEvaluation(Evaluation left, Evaluation right, BinaryOperation operation)
{
this.left = left;
this.right = right;
this.operation = operation;
}
private Evaluation PerformEvaluate(ParseTreeNode node)
{
switch (node.Term.Name)
{
case "BinExpr":
var leftNode = node.ChildNodes[0];
var operationNode = node.ChildNodes[1];
var rightNode = node.ChildNodes[2];
Evaluation left = PerformEvaluate(leftNode);
Evaluation right = PerformEvaluate(rightNode);
BinaryOperation operation = BinaryOperation.Add;
switch (operationNode.Term.Name)
{
case "+":
operation = BinaryOperation.Add;
break;
case "-":
operation = BinaryOperation.Sub;
break;
case "*":
operation = BinaryOperation.Mul;
break;
case "/":
operation = BinaryOperation.Div;
break;
case "^":
operation = BinaryOperation.Exp;
break;
}
return(new BinaryEvaluation(left, right, operation));
case "FunctionCall":
var functionNode = node.ChildNodes[0];
var argumentNode = node.ChildNodes[1];
Evaluation argument = PerformEvaluate(argumentNode);
FunctionOperation function = FunctionOperation.sin;
switch (functionNode.Token.Text)
{
case "sin":
function = FunctionOperation.sin;
break;
case "cos":
function = FunctionOperation.cos;
break;
case "tg":
function = FunctionOperation.tg;
break;
case "ctg":
function = FunctionOperation.ctg;
break;
}
return(new FunctionEvaluation(function, argument));
case "number":
CultureInfo culture = new CultureInfo("en-US");
var value = Convert.ToSingle(node.Token.Text, culture);
return(new ConstantEvaluation(value));
case "AssignmentStmt":
var expNode = node.ChildNodes[0];
var expreNode = node.ChildNodes[2];
Evaluation expression = PerformEvaluate(expreNode);
return(new NameEvaluation(expNode.ToString(), expression));
case "Term":
Console.WriteLine("не знаю что с этим делать");
throw new NotSupportedException();
case "UnExpr":
var unNode = node.ChildNodes[0];
var unExprNode = node.ChildNodes[1];
Evaluation unExpression = PerformEvaluate(unExprNode);
return(new UnaryEvaluation(unNode.ToString(), unExpression));
}
throw new InvalidOperationException($"Unrecognizable term {node.Term.Name}");
}
public NameEvaluation(string name, Evaluation values)
{
variables.Add(name, values);
}
public UnaryEvaluation(string op, Evaluation evaluation)
{
this.op = op;
this.evaluation = evaluation;
}
public FunctionEvaluation(FunctionOperation function, Evaluation argument)
{
this.function = function;
this.argument = argument;
}