public VGDLNode(string content, int indent, int lineNumber, VGDLNode parent = null)
{
this.children = new List <VGDLNode>();
this.content = content;
this.indent = indent;
this.lineNumber = lineNumber;
if (parent != null)
{
parent.insert(this);
}
}
/// <summary>
/// Parse indented VGDL tree
/// </summary>
/// <param name="gameString"></param>
/// <returns></returns>
/// <exception cref="ArgumentException"></exception>
private static VGDLNode indentTreeLexer(string gameString, int tabSize = 4)
{
var tabSpace = new string(' ', tabSize);
//TODO: all of these are ignored by the JAVA version, consider if we need them?
gameString = gameString.Replace("\t", tabSpace);
gameString = gameString.Replace("(", " ");
gameString = gameString.Replace(")", " ");
//TODO: fix this crap, it seems they want to handle comma separated values, but forgot about this? (see hunger-games.txt)
//NOTE: Figured out that the JAVA version actually doesn't change the line, because they ignore the result of the line.replace
//gameString = gameString.Replace(",", " ");
var lines = gameString.Split(new [] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
VGDLNode last = null;
for (var lineNumber = 0; lineNumber < lines.Length; lineNumber++)
{
var line = lines[lineNumber];
//Remove comments starting with #
if (line.Contains("#"))
{
line = line.Split('#')[0];
}
//Handle whitepace and indentation
var content = line.Trim();
if (content.Length > 0)
{
var indent = line.IndexOf(content[0]);
last = new VGDLNode(content, indent, lineNumber, last);
}
}
if (last == null)
{
throw new ArgumentException("Failed to parse:\n" + gameString);
}
//Return root
return(last.getRoot());
}
public void insert(VGDLNode node)
{
if (indent < node.indent)
{
if (children.Count > 0 && children[0].indent != node.indent)
{
Debug.Log("child indentation: " + children[0].indent + " vs node indentation: " + node.indent);
throw new Exception("[Line " + node.lineNumber.ToString() + "] child indentations must match (tabs are expanded to 4 spaces by default)");
}
children.Add(node);
node.parent = this;
}
else
{
if (parent == null)
{
throw new Exception("Root node too indented?");
}
parent.insert(node);
}
}
