public virtual Differences VisitConstruct(Construct cons1, Construct cons2){
Differences differences = new Differences(cons1, cons2);
if (cons1 == null || cons2 == null){
if (cons1 != cons2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
Construct changes = (Construct)cons2.Clone();
Construct deletions = (Construct)cons2.Clone();
Construct insertions = (Construct)cons2.Clone();
Differences diff = this.VisitExpression(cons1.Constructor, cons2.Constructor);
if (diff == null){Debug.Assert(false); return differences;}
changes.Constructor = diff.Changes as Expression;
deletions.Constructor = diff.Deletions as Expression;
insertions.Constructor = diff.Insertions as Expression;
Debug.Assert(diff.Changes == changes.Constructor && diff.Deletions == deletions.Constructor && diff.Insertions == insertions.Constructor);
differences.NumberOfDifferences += diff.NumberOfDifferences;
differences.NumberOfSimilarities += diff.NumberOfSimilarities;
ExpressionList exprChanges, exprDeletions, exprInsertions;
diff = this.VisitExpressionList(cons1.Operands, cons2.Operands, out exprChanges, out exprDeletions, out exprInsertions);
if (diff == null){Debug.Assert(false); return differences;}
changes.Operands = exprChanges;
deletions.Operands = exprDeletions;
insertions.Operands = exprInsertions;
differences.NumberOfDifferences += diff.NumberOfDifferences;
differences.NumberOfSimilarities += diff.NumberOfSimilarities;
diff = this.VisitExpression(cons1.Owner, cons2.Owner);
if (diff == null) { Debug.Assert(false); return differences; }
changes.Owner = diff.Changes as Expression;
deletions.Owner = diff.Deletions as Expression;
insertions.Owner = diff.Insertions as Expression;
Debug.Assert(diff.Changes == changes.Owner && diff.Deletions == deletions.Owner && diff.Insertions == insertions.Owner);
differences.NumberOfDifferences += diff.NumberOfDifferences;
differences.NumberOfSimilarities += diff.NumberOfSimilarities;
if (differences.NumberOfDifferences == 0) {
differences.Changes = null;
differences.Deletions = null;
differences.Insertions = null;
}else{
differences.Changes = changes;
differences.Deletions = deletions;
differences.Insertions = insertions;
}
return differences;
}
public override Expression VisitConstruct(Construct cons)
{
if (cons == null) return null;
return base.VisitConstruct((Construct)cons.Clone());
}