private Assignment ParseFunctionDecl(ParseTreeNode node)
{
if (node.Term.Name == "FunctionDecl")
{
var expr = ParseVariable(node.ChildNodes[1]);
var argsNode = node.ChildNodes[3].ChildNodes[0];
var chunkNode = node.ChildNodes[4];
var block = ParseBlock(chunkNode);
var def = new FunctionDefinition();
def.Arguments = new List<Argument>();
var nameNode = node.ChildNodes[2];
if (nameNode.ChildNodes.Count > 0)
{
def.Arguments.Add(new Argument { Name = "self" });
/*expr = new Ast.Variable()
{
Name = nameNode.ChildNodes[0].Token.ValueString,
Prefix = expr
};*/
var token = nameNode.ChildNodes[0].Token;
expr = new TableAccess
{
Expression = expr,
Index = new StringLiteral
{
Value = token.ValueString,
lineNumber = token.Location.Line,
columnNumber = token.Location.Column,
filename = curParseTree.FileName
}
};
}
def.Body = block;
if (argsNode.ChildNodes.Count > 0)
{
argsNode = argsNode.ChildNodes[0];
while (argsNode.ChildNodes.Count > 0)
{
if (argsNode.ChildNodes[0].Term.Name == "Varargs")
{
def.isVarargs = true;
break;
}
var ident = argsNode.ChildNodes[0].Token.ValueString;
def.Arguments.Add(new Argument { Name = ident });
if (argsNode.ChildNodes.Count == 1)
break;
argsNode = argsNode.ChildNodes[1];
}
}
var assign = new Assignment();
assign.Variables.Add(expr);
assign.Expressions.Add(def);
return assign;
}
throw new Exception("Invalid FunctionDecl node");
}
private Assignment ParseAssign(ParseTreeNode node)
{
if (node.Term.Name == "Assignment")
{
var assign = new Assignment();
var left = node.ChildNodes[0];
var right = node.ChildNodes[1];
assign.Variables.Add(ParseVariable(left.ChildNodes[0]));
assign.Expressions.Add(ParseExpression(right.ChildNodes[0]));
left = left.ChildNodes[1];
right = right.ChildNodes[1];
while (left.ChildNodes.Count > 0)
{
left = left.ChildNodes[0];
assign.Variables.Add(ParseVariable(left.ChildNodes[0]));
left = left.ChildNodes[1];
}
while (right.ChildNodes.Count > 0)
{
right = right.ChildNodes[0];
assign.Expressions.Add(ParseExpression(right.ChildNodes[0]));
right = right.ChildNodes[1];
}
return assign;
}
throw new Exception("Invalid Assignment node");
}
