public override Completion Evaluate(Interpreter interpreter)
{
var left = shiftExpression.Evaluate(interpreter).GetValue();
if (left.IsAbrupt())
{
return(left);
}
var leftValue = left.value !;
var right = additiveExpression.Evaluate(interpreter).GetValue();
if (right.IsAbrupt())
{
return(right);
}
var rightValue = right.value !;
return(Calculate(leftValue, shiftOperator, rightValue));
}
public override Completion Evaluate(Interpreter interpreter)
{
var leftValueComp = relationalExpression.Evaluate(interpreter).GetValue();
if (leftValueComp.IsAbrupt())
{
return(leftValueComp);
}
var leftValue = leftValueComp.value !;
var rightValueComp = shiftExpression.Evaluate(interpreter).GetValue();
if (rightValueComp.IsAbrupt())
{
return(rightValueComp);
}
var rightValue = rightValueComp.value !;
Completion r;
switch (relationalOperator)
{
case RelationalOperator.LessThan:
r = AbstractRelationalComparison(leftValue, rightValue);
if (r.IsAbrupt())
{
return(r);
}
if (r.value == UndefinedValue.Instance)
{
return(Completion.NormalCompletion(BooleanValue.False));
}
return(r);
case RelationalOperator.GreaterThan:
r = AbstractRelationalComparison(rightValue, leftValue, false);
if (r.IsAbrupt())
{
return(r);
}
if (r.value == UndefinedValue.Instance)
{
return(Completion.NormalCompletion(BooleanValue.False));
}
return(r);
case RelationalOperator.LessThanOrEqual:
r = AbstractRelationalComparison(rightValue, leftValue, false);
if (r.IsAbrupt())
{
return(r);
}
if (r.value == UndefinedValue.Instance || r.value == BooleanValue.True)
{
return(Completion.NormalCompletion(BooleanValue.False));
}
return(Completion.NormalCompletion(BooleanValue.True));
case RelationalOperator.GreaterThanOrEqual:
r = AbstractRelationalComparison(leftValue, rightValue);
if (r.IsAbrupt())
{
return(r);
}
if (r.value == UndefinedValue.Instance || r.value == BooleanValue.True)
{
return(Completion.NormalCompletion(BooleanValue.False));
}
return(Completion.NormalCompletion(BooleanValue.True));
case RelationalOperator.Instanceof:
return(InstanceOf(leftValue, rightValue));
case RelationalOperator.In:
if (!(rightValue is Object o))
{
return(Completion.ThrowTypeError("in operator applied to non-object"));
}
var propertyKey = leftValue.ToPropertyKey();
if (propertyKey.IsAbrupt())
{
return(propertyKey);
}
return(o.HasProperty(propertyKey.Other !));
default:
throw new InvalidOperationException($"RelationalExpression.Evaluate: unknown RelationalOperator enum value {(int)relationalOperator}");
}
}
