public void ProgramWithLinesTests()
{
// Arrange
var programWithLines = new ProgramWithLines(@"line1
line2
line4
line5".CleanCR());
// Act
// Assert
programWithLines.GetLine(0).Should().Be("line1");
programWithLines.GetLine(1).Should().Be("line2");
programWithLines.GetLine(3).Should().Be("line4");
programWithLines.GetLine(4).Should().Be("line5");
programWithLines.GetLineNumber(3).Should().Be(0);
programWithLines.GetLineNumber(7).Should().Be(1);
programWithLines.GetLineNumber(100).Should().Be(4);
programWithLines.GetColumnNumber(2).Should().Be(2);
programWithLines.GetColumnNumber(7).Should().Be(1);
programWithLines.GetColumnNumber(9).Should().Be(3);
programWithLines.GetHighlights(1, 3).Should().BeEquivalentTo(new List <Highlight> {
new Highlight(0, "line1", 1, 3)
});
programWithLines.GetHighlights(2, 20).Should().BeEquivalentTo(new List <Highlight> {
new Highlight(0, "line1", 2, 5),
new Highlight(1, "line2", 0, 5),
new Highlight(2, "", 0, 0),
new Highlight(3, "line4", 0, 5),
new Highlight(4, "line5", 0, 1),
});
}
public static string Highlight(ProgramWithLines programWithLines, int startPosition, int endPosition)
{
var highlights = programWithLines.GetHighlights(startPosition, endPosition);
var result = new StringBuilder();
foreach (var highlight in highlights.Where(h => h.ColumnEnd - h.ColumnStart > 0))
{
result.AppendLine($"Line {highlight.LineNumber + 1}: {highlight.Line}");
result.AppendLine(
$"Line {highlight.LineNumber + 1}: {ColumnMarkers(highlight)}");
}
return(result.ToString());
}
public static string Highlight(string program, int startPosition, int endPosition)
{
var programWithLines = new ProgramWithLines(program);
return(Highlight(programWithLines, startPosition, endPosition));
}
