public virtual Expression VisitTernaryExpression(TernaryExpression expression)
{
if (expression == null) return null;
expression.Operand1 = this.VisitExpression(expression.Operand1);
expression.Operand2 = this.VisitExpression(expression.Operand2);
expression.Operand3 = this.VisitExpression(expression.Operand3);
return expression;
}
public override Expression VisitTernaryExpression(TernaryExpression expression)
{
if (expression == null) return null;
return base.VisitTernaryExpression((TernaryExpression)expression.Clone());
}
private Expression ParseConditional(Expression condition, TokenSet followers){
Debug.Assert(this.currentToken == Token.Conditional);
this.GetNextToken();
Expression trueExpr = this.ParseExpression(followers|Token.Colon);
if (trueExpr == null) //Supply a dummy
trueExpr = new Literal(null, null, this.scanner.CurrentSourceContext);
Expression falseExpr;
if (this.currentToken == Token.Colon){
this.GetNextToken();
falseExpr = this.ParseExpression(followers);
}else{
this.Skip(Token.Colon); //gives appropriate error message
if (!followers[this.currentToken])
//Assume that only the : is missing. Go ahead as if it were specified.
falseExpr = this.ParseExpression(followers);
else
falseExpr = null;
}
if (falseExpr == null) //Supply a dummy
falseExpr = new Literal(null, null, this.scanner.CurrentSourceContext);
TernaryExpression result = new TernaryExpression(condition, trueExpr, falseExpr, NodeType.Conditional, null);
result.SourceContext = condition.SourceContext;
result.SourceContext.EndPos = falseExpr.SourceContext.EndPos;
this.SkipTo(followers);
return result;
}
public override Expression VisitTernaryExpression(TernaryExpression ternaryExpression)
{
ternaryExpression = (TernaryExpression)ternaryExpression.Clone();
ternaryExpression.Operand1 = simplify(ternaryExpression.Operand1);
ternaryExpression.Operand2 = simplify(ternaryExpression.Operand2);
ternaryExpression.Operand3 = simplify(ternaryExpression.Operand3);
return ternaryExpression;
}
public override Expression VisitTernaryExpression(TernaryExpression expression)
{
Write("(");
this.VisitExpression(expression.Operand1);
Write(" ? ");
this.VisitExpression(expression.Operand2);
Write(" : ");
this.VisitExpression(expression.Operand3);
Write(")");
return expression;
}
public EventingVisitor(Action<TernaryExpression> visitTernaryExpression) { VisitedTernaryExpression += visitTernaryExpression; } public event Action<TernaryExpression> VisitedTernaryExpression; public override Expression VisitTernaryExpression(TernaryExpression expression) { if (VisitedTernaryExpression != null) VisitedTernaryExpression(expression); return base.VisitTernaryExpression(expression); }
