public Function ParseFunction(Node funcNode)
{
// Left node is identifier, right node is funcNode
Expect(funcNode.Left, TokenType.Identifier);
Expect(funcNode.Right, TokenType.Block);
var func = new Function(funcNode, funcNode.Left.Value);
if (funcNode.Right.Right == null)
{
return(func);
}
// Create a data label for this functions lr store
var data = new Data(DataType.Return)
{
Name = "return" + Data.Count,
Type = DataType.Word,
Value = "0"
};
Data.Add(data);
var lrRegister = func.AddRegister(data);
func.StoreLr(data, lrRegister);
// Iterate through statements in this functions block
// Parse return separately
var statement = funcNode.Right.Right;
do
{
if (statement.Type == TokenType.Return)
{
func.AddReturn(ParseReturn(func, statement));
}
else
{
func.AddData(ParseStatement(func, statement));
}
statement = statement.Right;
} while (statement != null);
func.LoadLr(data, lrRegister);
return(func);
}
