public BufferingTextReader(TextReader source) {
if (source == null) { throw new ArgumentNullException("source"); }
InnerReader = source;
_locationTracker = new SourceLocationTracker();
UpdateCurrentCharacter();
}
public void UpdateLocationDoesNotAdvanceLineIndexOnNonNewlineCharacter() {
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('f', () => 'o');
// Assert
Assert.AreEqual(42, tracker.CurrentLocation.LineIndex);
}
public void UpdateLocationAdvancesAbsoluteIndexOnSlashN() {
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\n', () => 'o');
// Assert
Assert.AreEqual(11, tracker.CurrentLocation.AbsoluteIndex);
}
public void UpdateLocationAdvancesLineIndexOnSlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\n', 'o');
// Assert
Assert.Equal(43, tracker.CurrentLocation.LineIndex);
}
public void UpdateLocationAdvancesCharacterIndexOnNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('f', 'o');
// Assert
Assert.Equal(46, tracker.CurrentLocation.CharacterIndex);
}
internal void CalculateStart(Span prev)
{
if (prev == null)
{
Start = SourceLocation.Zero;
}
else
{
Start = new SourceLocationTracker(prev.Start).UpdateLocation(prev.Content).CurrentLocation;
}
}
public BufferingTextReader(TextReader source)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
InnerReader = source;
_locationTracker = new SourceLocationTracker();
UpdateCurrentCharacter();
}
public void UpdateLocationAdvancesCorrectlyForMultiLineString()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation("foo\nbar\rbaz\r\nbox");
// Assert
Assert.Equal(26, tracker.CurrentLocation.AbsoluteIndex);
Assert.Equal(45, tracker.CurrentLocation.LineIndex);
Assert.Equal(3, tracker.CurrentLocation.CharacterIndex);
}
public void UpdateLocationAdvancesAbsoluteIndexOnSlashRFollowedByNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', 'o');
// Assert
Assert.Equal(11, tracker.CurrentLocation.AbsoluteIndex);
}
public void ChangeStart(SourceLocation newStart)
{
_start = newStart;
Span current = this;
SourceLocationTracker tracker = new SourceLocationTracker(newStart);
tracker.UpdateLocation(Content);
while ((current = current.Next) != null)
{
current._start = tracker.CurrentLocation;
tracker.UpdateLocation(current.Content);
}
}
public SpanFactory()
{
LocationTracker = new SourceLocationTracker();
}
private void UpdateOffset() {
SourceLocationTracker tracker = new SourceLocationTracker();
tracker.UpdateLocation(Content);
Offset = tracker.CurrentLocation;
}
private static void EvaluateSpan(ErrorCollector collector, SourceLocationTracker tracker, Span actual, Span expected) {
if (!actual.Equals(expected)) {
AddMismatchError(collector, tracker, actual, expected);
}
else {
AddPassedMessage(collector, tracker, expected);
}
}
private static void AddPassedMessage(ErrorCollector collector, SourceLocationTracker tracker, SyntaxTreeNode expected) {
collector.AddMessage("{0} - PASSED", expected);
}
public void UpdateLocationAdvancesCharacterIndexOnSlashRFollowedBySlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', '\n');
// Assert
Assert.Equal(46, tracker.CurrentLocation.CharacterIndex);
}
public void UpdateLocationDoesNotAdvanceLineIndexOnSlashRFollowedBySlashN() {
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', () => '\n');
// Assert
Assert.AreEqual(42, tracker.CurrentLocation.LineIndex);
}
public void UpdateLocationResetsCharacterIndexOnSlashRFollowedByNonNewlineCharacter() {
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', () => 'o');
// Assert
Assert.AreEqual(0, tracker.CurrentLocation.CharacterIndex);
}
private void HandleWhitespaceRewriting() {
Debug.Assert(!String.IsNullOrEmpty(_nextSpanToOutput.Content));
// Check the last span for trailing whitespace
int endOfWhitespaceToCapture = _nextSpanToOutput.Content.Length;
for (int i = _nextSpanToOutput.Content.Length - 1; i >= 0; i--) {
char c = _nextSpanToOutput.Content[i];
if (CharUtils.IsNewLine(c)) {
break;
}
else if (!Char.IsWhiteSpace(c)) {
return; // Saw non-whitespace before newline, markup owns this whitespace so don't touch it
}
else {
endOfWhitespaceToCapture = i;
}
}
// Ok, endOfWhitespaceToCapture is now at the offset of the first whitespace character after the newline
string oldContent = _nextSpanToOutput.Content;
_nextSpanToOutput.Content = oldContent.Substring(0, endOfWhitespaceToCapture);
SourceLocationTracker tracker = new SourceLocationTracker();
tracker.CurrentLocation = _nextSpanToOutput.Start;
tracker.UpdateLocation(_nextSpanToOutput.Content);
Span whitespaceSpan = new CodeSpan(tracker.CurrentLocation, oldContent.Substring(endOfWhitespaceToCapture));
Visitor.VisitSpan(_nextSpanToOutput);
_nextSpanToOutput = whitespaceSpan;
}
private static void AddNullActualError(ErrorCollector collector, SourceLocationTracker tracker, SyntaxTreeNode actual, SyntaxTreeNode expected) {
collector.AddError("{0} - FAILED :: Actual: << Null >>", expected);
}
private static void AddMismatchError(ErrorCollector collector, SourceLocationTracker tracker, SyntaxTreeNode actual, SyntaxTreeNode expected) {
collector.AddError("{0} - FAILED :: Actual: {1}", expected, actual);
}
private static void EvaluateSyntaxTreeNode(ErrorCollector collector, SourceLocationTracker tracker, SyntaxTreeNode actual, SyntaxTreeNode expected) {
if (actual == null) {
AddNullActualError(collector, tracker, actual, expected);
}
if (actual.IsBlock != expected.IsBlock) {
AddMismatchError(collector, tracker, actual, expected);
}
else {
if (expected.IsBlock) {
EvaluateBlock(collector, tracker, (Block)actual, (Block)expected);
}
else {
EvaluateSpan(collector, tracker, (Span)actual, (Span)expected);
}
}
}
private static void EvaluateBlock(ErrorCollector collector, SourceLocationTracker tracker, Block actual, Block expected) {
if (actual.Type != expected.Type) {
AddMismatchError(collector, tracker, actual, expected);
}
else {
AddPassedMessage(collector, tracker, expected);
using (collector.Indent()) {
IEnumerator<SyntaxTreeNode> expectedNodes = expected.Children.GetEnumerator();
IEnumerator<SyntaxTreeNode> actualNodes = actual.Children.GetEnumerator();
while (expectedNodes.MoveNext()) {
if (!actualNodes.MoveNext()) {
collector.AddError("{0} - FAILED :: No more elements at this node", expectedNodes.Current);
}
else {
EvaluateSyntaxTreeNode(collector, tracker, actualNodes.Current, expectedNodes.Current);
}
}
while (actualNodes.MoveNext()) {
collector.AddError("End of Node - FAILED :: Found Node: {0}", actualNodes.Current);
}
}
}
}
public void UpdateLocationResetsCharacterIndexOnSlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\n', 'o');
// Assert
Assert.Equal(0, tracker.CurrentLocation.CharacterIndex);
}
public static void EvaluateParseTree(TestContext context, Block actualRoot, Block expectedRoot) {
// Evaluate the result
ErrorCollector collector = new ErrorCollector();
SourceLocationTracker tracker = new SourceLocationTracker();
// Link all the nodes
Span first = null;
Span previous = null;
foreach (Span span in expectedRoot.Flatten()) {
if(first == null) {
first = span;
}
span.Previous = previous;
if (previous != null) {
previous.Next = span;
}
previous = span;
}
Span.ClearCachedStartPoints(first);
if (expectedRoot == null) {
Assert.IsNull(actualRoot, "Expected an empty document. Actual: {0}", actualRoot);
}
else {
Assert.IsNotNull(actualRoot, "Expected a valid document, but it was empty");
EvaluateSyntaxTreeNode(collector, tracker, actualRoot, expectedRoot);
if (collector.Success) {
if (context != null) {
context.WriteLine("Parse Tree Validation Succeeded:\r\n{0}", collector.Message);
}
}
else {
Assert.Fail("\r\n{0}", collector.Message);
}
}
}
