private static Canvas Parse(TextReader text)
{
var parsers = new List <Parser <char, IPPMPart> >(new[] { FileType, ImageSize, Scale, PixelData });
string line;
var index = 0;
var current = parsers[index];
var builder = new CanvasBuilder(3);
bool complete = false;
while ((line = text.ReadLine()) != null)
{
if (complete)
{
break;
}
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
if (line.StartsWith('#'))
{
// Skip comment lines;
continue;
}
var parsed = current.ParseOrThrow(line);
var result = parsed.Process(builder);
switch (result)
{
case ParseResult.NextParser:
current = parsers[++index];
break;
case ParseResult.Complete:
complete = true;
break;
case ParseResult.Failure:
var error = parsed.GetLastFailureMessage();
if (!string.IsNullOrEmpty(error))
{
throw new FileLoadException(error);
}
throw new FileLoadException();
case ParseResult.Continue:
continue;
default:
throw new ArgumentOutOfRangeException();
}
}
return(builder.GetCanvas());
}
private void SetCanvas()
{
var Instructions = new Dictionary <ConsoleCommand, string> {
{ ConsoleCommand.ObjectType, "C" },
{ ConsoleCommand.X1, "20" },
{ ConsoleCommand.Y1, "4" }
};
Canvas = CanvasBuilder.GetCanvas <List <DataLine> >(Instructions);
}
public void GetCanvas()
{
var Instructions = new Dictionary <ConsoleCommand, string> {
{ ConsoleCommand.ObjectType, "C" },
{ ConsoleCommand.X1, "20" },
{ ConsoleCommand.Y1, "4" }
};
List <DataLine> Actual = CanvasBuilder.GetCanvas <List <DataLine> >(Instructions);
List <DataLine> Expected = new List <DataLine>()
{
new DataLine()
{
Line = new StringBuilder().Insert(0, "-", 22)
},
new DataLine()
{
Line = new StringBuilder().Insert(0, "|").Insert(1, " ", 20).Insert(21, "|")
},
new DataLine()
{
Line = new StringBuilder().Insert(0, "|").Insert(1, " ", 20).Insert(21, "|")
},
new DataLine()
{
Line = new StringBuilder().Insert(0, "|").Insert(1, " ", 20).Insert(21, "|")
},
new DataLine()
{
Line = new StringBuilder().Insert(0, "|").Insert(1, " ", 20).Insert(21, "|")
},
new DataLine()
{
Line = new StringBuilder().Insert(0, "-", 22)
},
};
Expected.ForEach(x => Assert.AreEqual(x.Line.ToString(), Actual[Expected.IndexOf(x)].Line.ToString()));
}