private LessonDocument ParseDocument(StringWithIndex text)
{
var sections = text.SplitWithoutModification(new string[] { "\n# STEP = " });
var header = sections[0];
var steps = sections.Skip(1).ToList();
var document = new LessonDocument(text);
// Get the header metadata
var headerLines = header.GetLines();
var title = headerLines.GetFirstLineValue("% TITLE = ").Trim();
document.Children.Add(new LessonDocumentTitle(title));
// Process the steps
foreach (var s in steps)
{
document.Children.Add(ParseStep(s));
}
// Add an end of file span (to catch pretext that was not processed)
document.Children.Add(new LessonEnd(new StringWithIndex(text.Text, text.Length, 0)));
DecorateNodesWithParent(document);
DecorateSpansWithSkippedText(document);
return(document);
}
private LessonNode ParseStep(StringWithIndex text)
{
text = text.Trim();
var step = new LessonStep(text);
// Divide the parts
var parts = text.SplitWithoutModification("\n#");
// The header includes the title and the instructions
var header = parts[0];
var headerParts = header.SplitAfterFirstLine();
// Parse the step title
var titlePart = headerParts[0];
step.Children.Add(new LessonStepTitle(titlePart.TrimStart("# STEP = ")));
// Add instructions - the first section (no header)
var instructionsPart = headerParts[1];
step.Children.Add(ParseInstructions(instructionsPart));
// Add Goal
var goalPart = parts.First(p => p.Text.StartsWith("\n## GOAL"));
step.Children.Add(ParseGoal(goalPart));
// Add Summary
var summaryPart = parts.First(p => p.Text.StartsWith("\n## SUMMARY"));
step.Children.Add(ParseSummary(summaryPart));
// Add Test
var testPart = parts.FirstOrDefault(p => p.Text.StartsWith("\n## TEST"));
if (testPart != null)
{
step.Children.Add(ParseTest(testPart));
}
// Add Explanation
var explanationPart = parts.FirstOrDefault(p => p.Text.StartsWith("\n## EXPLANATION"));
if (explanationPart != null)
{
step.Children.Add(ParseExplanation(explanationPart));
}
// Add File
var filePart = parts.FirstOrDefault(p => p.Text.StartsWith("\n## FILE = "));
if (filePart != null)
{
step.Children.Add(ParseFile(filePart));
}
// TODO: Add other parts
// Order children
var ordered = step.Children.OrderBy(c => c.Content.Index).ToList();
step.Children.Clear();
step.AddChildren(ordered);
return(step);
}