public static MeNode Build(Token[] tokens, IGameEngine engine)
{
TokenNode tree = TreeBuilder.MakeTree(InfixToPostfix.ToPostfix(tokens));
return(Build(null, tree, engine));
}
public static MeNode Build(MeNode parent, TokenNode node, IGameEngine engine)
{
MeNode newNode = null;
switch (node.Token.Type)
{
case TokenType.Function:
{
newNode = new MeNode(new MeVariable()
{
Value = Definer.Instance().Functions[node.Token.Value],
Type = VariableType.Function
});
break;
}
case TokenType.Operator:
{
newNode = new MeNode(new MeVariable()
{
Value = Definer.Instance().Operators[node.Token.Value],
Type = VariableType.Operator
});
break;
}
case TokenType.Variable:
{
//first, try a number
double result = 0;
bool success = double.TryParse(node.Token.Value, NumberStyles.Any, CultureInfo.InvariantCulture, out result);
if (success)
{
newNode = new MeNode(
new MeVariable()
{
Value = result, Type = VariableType.NumericValue
});
break;
}
//try a boolean
bool boolResult = false;
success = bool.TryParse(node.Token.Value, out boolResult);
if (success)
{
newNode = new MeNode(boolResult);
break;
}
//try a placeholder
if (node.Token.Value.StartsWith("$"))
{
newNode = new MeNode(
new MeVariable()
{
Value = node.Token.Value, Type = VariableType.PlaceHolder
});
break;
}
//try an entitiy
Entity tryEntity = engine.GetEntityByKey(node.Token.Value);
if (tryEntity != null)
{
newNode = new MeNode(
new MeVariable()
{
Value = tryEntity, Type = VariableType.Entity
});
break;
}
//try a damage typeTemplate
DamageTypeTemplate tryDamageTypeTemplate = engine.GeDamageType(node.Token.Value);
if (tryDamageTypeTemplate != null)
{
newNode = new MeNode(
new MeVariable()
{
Value = tryDamageTypeTemplate, Type = VariableType.DamageType
});
break;
}
/*
* MeVariable tryVariable = engine.GetVariable(node.Token.Final);
* if (tryVariable != null)
* {
* newNode = new MeNode(tryVariable);
* break;
* } */
//if nothing else is found, it must be a string
newNode = new MeNode(
new MeVariable()
{
Value = node.Token.Value, Type = VariableType.String
});
break;
}
}
foreach (TokenNode subNode in node.Parameters)
{
newNode.Leaves.Add(Build(newNode, subNode, engine));
}
newNode.Parent = parent;
return(newNode);
}