private Expression sentence(Expression expression)
{
Expression e = expression;
while (e.freeVariables.Count > 0)
{
e = new BasicQuantifiedExpression(procedure, BasicForall.get, e.freeVariables.Last(), e,
new[] { new Expression[0] }, "");
}
return(e);
}
internal Expression makeSentence(Expression e)
{
var r = e;
while (r.freeVariables.Any())
{
r = new BasicQuantifiedExpression(scope, BasicForall.get, r.freeVariables.First(), r, new List <Expression[]>(), null);
}
while (r.freeTypeVariables.Any())
{
r = new BasicQuantifiedTypeExpression(BasicTypeForall.get, r.freeTypeVariables.First(), r, new Expression[0], null);
}
return(r);
}
public virtual Expression visit(QuantifiedExpression e)
{
BoundVariable newV = visitBoundVariable(e.variable);
Expression newE = e.expression.visit(this);
var newT = (from trs in e.triggers select trs.visit(this)).ToArray();
e.type.visit(this);
Expression result;
if (!ReferenceEquals(e.variable, newV) || !ReferenceEquals(e.expression, newE) ||
(e.triggers.Count != newT.Count() || Enumerable.Range(0, e.triggers.Count).Any(i => !ReferenceEquals(e.triggers[i], newT[i]))))
{
result = new BasicQuantifiedExpression(procedure, e.quantifier, newV, newE, newT, e.attributes);
}
else
{
result = e;
}
return(result);
}
