public static bool TryParse(string content, int start, int length, out KirinNode result)
{
result = null;
var match = PreKeywords.FirstOrDefault(k => content.StartsWith(k));
if (match == null)
{
return(false);
}
var node = new KirinElseIfStatement(start, length)
{
RawCondition = ""
};
if (content.Substring(match.Length).Length > 0 && content.Substring(match.Length, 1) == " ")
{
var matchStr = content.Substring(match.Length + 1);
var startStr = matchStr[0].ToString();
if (startStr != startStr.ToLower())
{
throw new FiMException("Invalid else if statement");
}
if (!KirinIfStatementStart.TryParse(
matchStr.Substring(0, 1).ToUpper() + matchStr.Substring(1), start, length, out var ifResult)
)
{
throw new FiMException("Invalid else if statement");
}
node.RawCondition = (ifResult as KirinIfStatementStart).RawCondition;
}
if (node.RawCondition.EndsWith(" then"))
{
node.RawCondition = node.RawCondition.Substring(0, node.RawCondition.Length - " then".Length);
}
result = node;
return(true);
}
public static bool TryParse(string content, int start, int length, out KirinNode result)
{
result = null;
var match = PreKeywords.FirstOrDefault(k => content.StartsWith(k));
if (match == null)
{
return(false);
}
var node = new KirinIfStatementStart(start, length)
{
RawCondition = content.Substring(match.Length)
};
if (node.RawCondition.EndsWith(" then"))
{
node.RawCondition = node.RawCondition.Substring(0, node.RawCondition.Length - " then".Length);
}
result = node;
return(true);
}
public static KirinIfStatement ParseNodes(
KirinIfStatementStart startNode,
KirinNode[] nodes,
KirinIfStatementEnd endNode,
string content)
{
var statement = new KirinIfStatement(-1, -1);
string currentCondition = startNode.RawCondition;
KirinNode conditionNode = startNode;
List <KirinNode> subStatement = new List <KirinNode>();
foreach (var subnode in nodes)
{
if (subnode.NodeType != "KirinElseIfStatement")
{
subStatement.Add(subnode);
}
else
{
var conditionStatement = FiMLexer.ParseStatement(subStatement.ToArray(), content);
try
{
statement.AddCondition(currentCondition, conditionStatement);
}
catch (FiMException ex)
{
throw new Exception(ex.Message + " at line " +
FiMHelper.GetIndexPair(content, conditionNode.Start).Line);
}
var elseIfNode = subnode as KirinElseIfStatement;
currentCondition = elseIfNode.RawCondition;
conditionNode = subnode;
subStatement.Clear();
}
}
if (subStatement.Count > 0)
{
var conditionStatement = FiMLexer.ParseStatement(subStatement.ToArray(), content);
try
{
statement.AddCondition(currentCondition, conditionStatement);
}
catch (FiMException ex)
{
throw new Exception(ex.Message + " at line " +
FiMHelper.GetIndexPair(content, conditionNode.Start).Line);
}
}
statement.SetComplete(startNode.Start, endNode.Start + endNode.Length);
if (statement.Count == 0)
{
throw new FiMException("If Statement has empty conditions");
}
return(statement);
}
