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);
}
string condition = content.Substring(match.Length);
if (!KirinConditional.IsConditional(condition, out var cResult))
{
throw new FiMException("Expression is not a conditional");
}
var node = new KirinWhileLoop(start, length)
{
Condition = cResult
};
result = node;
return(true);
}
public static KirinWhileLoop ParseNodes(
KirinWhileLoop startNode,
KirinNode[] nodes,
KirinLoopEnd endNode,
string content)
{
var statement = startNode;
if (endNode != null)
{
statement.Length = (endNode.Start + endNode.Length) - startNode.Start;
statement.Statement = FiMLexer.ParseStatement(nodes, content);
}
return(statement);
}
public static KirinNode[] GetStatementNodes(
KirinNode startingNode,
KirinNode[] nodes,
int startIndex,
string content,
out int endIndex
)
{
endIndex = startIndex;
string endNodeType = startingNode.NodeType == "KirinIfStatementStart" ? "KirinIfStatementEnd" : "KirinLoopEnd";
List <KirinNode> statementNodes = new List <KirinNode>();
for (int si = startIndex + 1; si < nodes.Length; si++)
{
var subnode = nodes[si];
if (subnode.NodeType == "KirinIfStatementStart" ||
subnode.NodeType == "KirinForInLoop" ||
subnode.NodeType == "KirinForToLoop" ||
subnode.NodeType == "KirinWhileLoop" ||
subnode.NodeType == "KirinSwitchStart")
{
var subnodes = GetStatementNodes(subnode, nodes, si, content, out si);
var eNode = new KirinExecutableNode(-1, -1);
if (subnode.NodeType == "KirinIfStatementStart")
{
var sn = subnode as KirinIfStatementStart;
var en = nodes[si] as KirinIfStatementEnd;
eNode = KirinIfStatement.ParseNodes(sn, subnodes, en, content);
}
else if (subnode.NodeType == "KirinForInLoop")
{
var sn = subnode as KirinForInLoop;
var en = nodes[si] as KirinLoopEnd;
eNode = KirinForInLoop.ParseNodes(sn, subnodes, en, content);
}
else if (subnode.NodeType == "KirinForToLoop")
{
var sn = subnode as KirinForToLoop;
var en = nodes[si] as KirinLoopEnd;
eNode = KirinForToLoop.ParseNodes(sn, subnodes, en, content);
}
else if (subnode.NodeType == "KirinWhileLoop")
{
var sn = subnode as KirinWhileLoop;
var en = nodes[si] as KirinLoopEnd;
eNode = KirinWhileLoop.ParseNodes(sn, subnodes, en, content);
}
else if (subnode.NodeType == "KirinSwitchStart")
{
var sn = subnode as KirinSwitchStart;
var en = nodes[si] as KirinLoopEnd;
eNode = KirinSwitch.ParseNodes(sn, subnodes, en, content);
}
statementNodes.Add(eNode);
continue;
}
if (subnode.NodeType == endNodeType)
{
endIndex = si;
break;
}
if (si == nodes.Length - 1)
{
throw new FiMException($"Failed to find end of statement");
}
statementNodes.Add(subnode);
}
return(statementNodes.ToArray());
}