private static ConditionalBlockExpression ToConditionalBlockExpression(ConditionalEx e)
{
return(new ConditionalBlockExpression(
new BaseIfExpression [] { new IfExpression(condition: Parse(e.CondExpr), body: Parse(e.TrueExpr)) }.ToImmutableArray(),
new ElseExpression(Parse(e.FalseExpr))
));
}
public override void VisitConditionalEx(ConditionalEx x)
{
VisitElement(x.CondExpr);
ConsumeToken(Tokens.T_QUESTION, "?");
VisitElement(x.TrueExpr); // can be null
ConsumeToken(Tokens.T_COLON, ":");
VisitElement(x.FalseExpr);
}
/// <summary>
/// Initializes a new instance of the <see cref="BinaryExPoint" /> class.
/// </summary>
/// <param name="expression">Conditional expression</param>
/// <param name="condition">Condition determining whether true or false, or merge will be used</param>
/// <param name="trueAssume">Assume point for true binary operand </param>
/// <param name="falseAssume">Assume point for false binary operand </param>
/// <param name="trueOperand">True operand</param>
/// <param name="falseOperand">False operand</param>
internal ConditionalExPoint(ConditionalEx expression, ValuePoint condition, AssumePoint trueAssume, AssumePoint falseAssume, ValuePoint trueOperand, ValuePoint falseOperand)
{
Expression = expression;
Condition = condition;
TrueAssume = trueAssume;
FalseAssume = falseAssume;
TrueOperand = trueOperand;
FalseOperand = falseOperand;
}
/// <inheritdoc />
override public void VisitConditionalEx(ConditionalEx x)
{
VisitElement(x.CondExpr);
var condExpr = result;
VisitElement(x.TrueExpr);
var trueExpr = result;
VisitElement(x.FalseExpr);
var falseExpr = result;
result = new ConditionalEx((Expression)condExpr, (Expression)trueExpr, (Expression)falseExpr);
}
override public void VisitConditionalEx(ConditionalEx x)
{
_serializer.StartSerialize(typeof(ConditionalEx).Name, SerializeSpan(x.Span));
_serializer.StartSerialize("CondExpr");
VisitElement(x.CondExpr);
_serializer.EndSerialize();
_serializer.StartSerialize("TrueExpr");
VisitElement(x.TrueExpr);
_serializer.EndSerialize();
_serializer.StartSerialize("FalseExpr");
VisitElement(x.FalseExpr);
_serializer.EndSerialize();
_serializer.EndSerialize();
}
public override void VisitConditionalEx(ConditionalEx x)
{
/* Points are created in current ordering
* 1. conditionExpr,
* 2. trueAssume,
* 3. trueExpr,
* 4. falseAssume,
* 5. falseExpr,
*/
//1.
// starts branching
var conditionExpr = CreateRValue(x.CondExpr);
//create true branch
var trueAssumeCond = new AssumptionCondition(ConditionForm.All, x.CondExpr);
var trueAssume = new AssumePoint(trueAssumeCond, new[] { conditionExpr });
//2.
AppendToChain(trueAssume);
//3.
var trueExpr = CreateRValue(x.TrueExpr);
//create false branch
var falseAssumeCond = new AssumptionCondition(ConditionForm.None, x.CondExpr);
var falseAssume = new AssumePoint(falseAssumeCond, new[] { conditionExpr });
//4.
AppendToChain(falseAssume);
//5.
var falseExpr = CreateRValue(x.FalseExpr);
//connect condition - true assume will be connected via chaining
conditionExpr.AddFlowChild(falseAssume);
//create result
var expression = new ConditionalExPoint(x, conditionExpr, trueAssume, falseAssume, trueExpr, falseExpr);
//false expr is added when processing substitution
PreventChainEdge(trueExpr);
trueExpr.AddFlowChild(expression);
// Both branches must be processed before the expression
conditionExpr.CreateWorklistSegment(expression);
Result(expression);
}
/// <summary>
/// Visit conditions.
/// </summary>
/// <param name="x"></param>
virtual public void VisitConditionalEx(ConditionalEx x)
{
VisitElement(x.CondExpr);
VisitElement(x.TrueExpr);
VisitElement(x.FalseExpr);
}
/// <inheritdoc />
public override void VisitConditionalEx(ConditionalEx x)
{
RValueResult(x);
}