public void Setup()
{
_left = Mock.Interface<ICalculationNode>();
_right = Mock.Interface<ICalculationNode>();
_substractionNode = new SubstractionNode(_left, _right);
}
public BinaryExpressionNode ParseBinaryExpresssion(Token operatorToken, AstNode leftOperand, AstNode rightOperand)
{
BinaryExpressionNode expression = null;
switch (operatorToken.Type)
{
case TokenType.Plus:
expression = new AdditionNode(operatorToken.SourceLine);
break;
case TokenType.Minus:
expression = new SubstractionNode(operatorToken.SourceLine);
break;
case TokenType.Asterisk:
expression = new MultiplicationNode(operatorToken.SourceLine);
break;
case TokenType.Slash:
expression = new DivisionNode(operatorToken.SourceLine);
break;
case TokenType.Equals:
expression = new EqualsComparisonNode(operatorToken.SourceLine);
break;
case TokenType.NotEquals:
expression = new NotEqualsComparisonNode(operatorToken.SourceLine);
break;
case TokenType.Less:
expression = new LessComparisonNode(operatorToken.SourceLine);
break;
case TokenType.EqualsOrLess:
expression = new EqualsOrLessComparisonNode(operatorToken.SourceLine);
break;
case TokenType.Greater:
expression = new GreaterComparisonNode(operatorToken.SourceLine);
break;
case TokenType.EqualsOrGreater:
expression = new EqualsOrGreaterComparisonNode(operatorToken.SourceLine);
break;
case TokenType.And:
expression = new LogicalAndNode(operatorToken.SourceLine);
break;
case TokenType.Or:
expression = new LogicalOrNode(operatorToken.SourceLine);
break;
default:
throw new CompilerException($"`{MethodBase.GetCurrentMethod().Name}` called with a bad token. Expected a binary operator, token has type `{operatorToken.Type}` instead.");
}
expression.LeftOperand = leftOperand;
expression.RightOperand = rightOperand;
return(expression);
}
public abstract T Visit(SubstractionNode node);
public override int Visit(SubstractionNode node) => Visit(node.Left) - Visit(node.Right);
