public SimplifiedExpression Visit(UnaryMinusExpression expression)
{
if (_expressionDepth > 1)
{
var extracted = _GetExpressionExtractedInTemporaryVariable(expression);
return(new SimplifiedExpression(new VariableExpression(extracted.VariableName), extracted.Instructions.ToList()));
}
return(new SimplifiedExpression(expression));
}
public Expression Visit(UnaryMinusExpression expression)
{
var evaluated = expression.Expression.Accept(this);
if (evaluated is IntegerExpression integer)
{
return(new IntegerExpression(-integer.Value));
}
return(new UnaryMinusExpression(evaluated));
}
public void Reduce_UnaryMinusWithConstantOperand()
{
_runtime
.Setup(mock => mock.FindAndCall("-",
It.Is <IExecutionContext>(context =>
context.Line == 0 &&
context.Column == 0 &&
context.Count == 1 &&
context[0].Equals(new IntValue(1))
)))
.Returns(new IntValue(-1));
var expr = new UnaryMinusExpression(0, 0, new ConstantExpression(0, 4, new IntValue(1)));
var reduced = expr.Accept(_visitor);
Assert.IsInstanceOfType(reduced, typeof(ConstantExpression));
var constant = (ConstantExpression)reduced;
Assert.AreEqual(-1, ((IntValue)constant.Value).Value);
Assert.AreEqual(0, constant.Line);
Assert.AreEqual(0, constant.Column);
}
public Bitmap Visit(UnaryMinusExpression expr)
{
return(expr.Parameter.Accept(this));
}
public ISet <DescriptorKind> Visit(UnaryMinusExpression expression)
{
return(_unaryMinusRule.Transfer(expression, this));
}
public override int?VisitUnaryMinusExpression(UnaryMinusExpression unaryMinusExpression)
{
return(-unaryMinusExpression.Operand.Accept(this));
}
public IEnumerable <Expression> Visit(UnaryMinusExpression expression)
{
return(Visit(expression.Expression));
}
public Expression Visit(UnaryMinusExpression expression)
{
var visited = expression.Expression.Accept(this);
return(visited == expression ? expression : new UnaryMinusExpression(visited));
}
private bool _AreEqual(UnaryMinusExpression a, UnaryMinusExpression b)
{
return(AreEqual(a.Expression, b.Expression));
}
public virtual void VisitUnaryMinusExpression(UnaryMinusExpression unaryMinusExpression)
{
DefaultVisit(unaryMinusExpression);
}
public void Visit(UnaryMinusExpression expression)
{
expression.Expression.Accept(this);
}
