internal Version(Version prev)
{
this.provider = prev.provider;
this.id = unchecked( prev.id + 1 );
}
internal Version(TextSourceVersionProvider provider)
{
this.provider = provider;
}
internal Version(TextSourceVersionProvider provider)
{
this.provider = provider;
}
internal Version(Version prev)
{
this.provider = prev.provider;
this.id = unchecked (prev.id + 1);
}
public static void Run(ITextSource originalXmlFile)
{
int seed;
lock (sharedRnd) {
seed = sharedRnd.Next();
}
Console.WriteLine(seed);
Random rnd = new Random(seed);
AXmlParser parser = new AXmlParser();
StringBuilder b = new StringBuilder(originalXmlFile.Text);
IncrementalParserState parserState = null;
var versionProvider = new TextSourceVersionProvider();
int totalCharactersParsed = 0;
int totalCharactersChanged = originalXmlFile.TextLength;
TimeSpan incrementalParseTime = TimeSpan.Zero;
TimeSpan nonIncrementalParseTime = TimeSpan.Zero;
Stopwatch w = new Stopwatch();
for (int iteration = 0; iteration < 100; iteration++) {
totalCharactersParsed += b.Length;
var textSource = new StringTextSource(b.ToString(), versionProvider.CurrentVersion);
w.Restart();
var incrementalResult = parser.ParseIncremental(parserState, textSource, out parserState);
w.Stop();
incrementalParseTime += w.Elapsed;
w.Restart();
var nonIncrementalResult = parser.Parse(textSource);
w.Stop();
nonIncrementalParseTime += w.Elapsed;
CompareResults(incrementalResult, nonIncrementalResult);
incrementalResult.AcceptVisitor(new ValidationVisitor(textSource));
// Randomly mutate the file:
List<TextChangeEventArgs> changes = new List<TextChangeEventArgs>();
int modifications = rnd.Next(0, 25);
int offset = 0;
for (int i = 0; i < modifications; i++) {
if (i == 0 || rnd.Next(0, 10) == 0)
offset = rnd.Next(0, b.Length);
else
offset += rnd.Next(0, Math.Min(10, b.Length - offset));
int originalOffset = rnd.Next(0, originalXmlFile.TextLength);
int insertionLength;
int removalLength;
switch (rnd.Next(0, 21) / 10) {
case 0:
removalLength = 0;
insertionLength = rnd.Next(0, Math.Min(50, originalXmlFile.TextLength - originalOffset));
break;
case 1:
removalLength = rnd.Next(0, Math.Min(20, b.Length - offset));
insertionLength = rnd.Next(0, Math.Min(20, originalXmlFile.TextLength - originalOffset));
break;
default:
removalLength = rnd.Next(0, b.Length - offset);
insertionLength = rnd.Next(0, originalXmlFile.TextLength - originalOffset);
break;
}
string removedText = b.ToString(offset, removalLength);
b.Remove(offset, removalLength);
string insertedText = originalXmlFile.GetText(originalOffset, insertionLength);
b.Insert(offset, insertedText);
versionProvider.AppendChange(new TextChangeEventArgs(offset, removedText, insertedText));
totalCharactersChanged += insertionLength;
}
}
Console.WriteLine("Incremental parse time: " + incrementalParseTime + " for " + totalCharactersChanged + " characters changed");
Console.WriteLine("Non-Incremental parse time: " + nonIncrementalParseTime + " for " + totalCharactersParsed + " characters");
}