public virtual Differences VisitExpressionStatement(ExpressionStatement statement1, ExpressionStatement statement2){
Differences differences = new Differences(statement1, statement2);
if (statement1 == null || statement2 == null){
if (statement1 != statement2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
ExpressionStatement changes = (ExpressionStatement)statement2.Clone();
ExpressionStatement deletions = (ExpressionStatement)statement2.Clone();
ExpressionStatement insertions = (ExpressionStatement)statement2.Clone();
Differences diff = this.VisitExpression(statement1.Expression, statement2.Expression);
if (diff == null){Debug.Assert(false); return differences;}
changes.Expression = diff.Changes as Expression;
deletions.Expression = diff.Deletions as Expression;
insertions.Expression = diff.Insertions as Expression;
Debug.Assert(diff.Changes == changes.Expression && diff.Deletions == deletions.Expression && diff.Insertions == insertions.Expression);
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 Statement VisitExpressionStatement(ExpressionStatement statement)
{
if (statement == null) return null;
return base.VisitExpressionStatement((ExpressionStatement)statement.Clone());
}