public static BlockNode ProcessTokens(List <ScriptToken> tokens)
{
List <AstTreeNode> blockNodes = new List <AstTreeNode>();
AstTreeNode node = new BlockNode(null);
int count = 0;
StripWhiteSpace(tokens);
while (tokens.Count > 0)
{
count++;
if (count > 1000)
{
break; // Limit to 1000 iterations while in development
}
if (tokens[0].Type == EScriptTokenType.RETURN)
{
tokens.RemoveAt(0); // Last value in block is returned by default
}
ScriptToken scriptToken = tokens[0];
if (scriptToken.Type == EScriptTokenType.NAME)
{
node = new RootScopeMemberNode(
new LiteralNode <string>(scriptToken.Value)
);
tokens.RemoveAt(0);
}
else if (scriptToken.Type == EScriptTokenType.ASSIGN)
{
node = AssignmentNode.Parse(node, scriptToken, tokens);
}
else if (scriptToken.Type == EScriptTokenType.IF)
{
node = IfStatementNode.Parse(node, scriptToken, tokens);
blockNodes.Add(node);
node = null;
}
else if (scriptToken.Type == EScriptTokenType.FOR)
{
node = ForStatementNode.Parse(node, scriptToken, tokens);
blockNodes.Add(node);
node = null;
}
else if (scriptToken.Type == EScriptTokenType.STRING_LITERAL)
{
node = new LiteralNode <string>(scriptToken.Value);
tokens.RemoveAt(0);
}
else if (scriptToken.Type == EScriptTokenType.NUMBER_LITERAL)
{
AstTreeNode _node;
if (scriptToken.Value.Contains("."))
{
_node = new FloatLiteralNode(scriptToken.Value);
}
else
{
_node = new IntegerLiteralNode(scriptToken.Value);
}
node = _node;
tokens.RemoveAt(0);
}
else if (scriptToken.Type == EScriptTokenType.PERIOD)
{
if (tokens[1].Type == EScriptTokenType.NAME)
{
node = new ScopeMemberNode(
node,
new LiteralNode <string>(tokens[1].Value)
);
tokens.RemoveAt(0);
tokens.RemoveAt(0);
}
}
else if (scriptToken.Type == EScriptTokenType.L_BRACKET)
{
if (node.GetType() == typeof(RootScopeMemberNode))
{
// indice
}
else
{
node = ArrayNode.Parse(node, scriptToken, tokens);
}
}
else if (scriptToken.Type == EScriptTokenType.L_PAREN)
{
List <List <ScriptToken> > funcArgs = GetBlockTokens(tokens);
List <AstTreeNode> nodes = new List <AstTreeNode>();
;
foreach (List <ScriptToken> arg in funcArgs)
{
nodes.Add(ProcessTokens(arg));
}
node = new FunctionCallNode(
node, // Previous node should be a NAME
new FunctionArgumentNode(nodes)
);
}
else if (scriptToken.Type == EScriptTokenType.SEMI_COLON)
{
if (node != null)
{
blockNodes.Add(node);
}
node = null;
tokens.RemoveAt(0);
}
else if (ComparisonNode.Matches(tokens))
{
node = ComparisonNode.Parse(node, scriptToken, tokens);
}
else if (ArithmeticNode.Matches(tokens))
{
AstTreeNode _node = ArithmeticNode.Parse(node, scriptToken, tokens);
node = _node;
}
else if (ArithmeticAssignmentNode.Matches(tokens))
{
node = ArithmeticAssignmentNode.Parse(node, scriptToken, tokens);
}
else if (scriptToken.Type == EScriptTokenType.WHITESPACE)
{
tokens.RemoveAt(0);
}
else if (scriptToken.Type == EScriptTokenType.BOOLEAN_LITERAL)
{
node = new BooleanLiteralNode(tokens[0].Value);
tokens.RemoveAt(0);
}
else if (scriptToken.Type == EScriptTokenType.NULL_LITERAL)
{
node = new LiteralNode <object>(null);
tokens.RemoveAt(0);
}
else
{
string code = ScriptTree.ToCode(tokens, 10);
Console.WriteLine($"Syntax Error.Near {code}");
}
}
if (node != null)
{
blockNodes.Add(node);
}
return(new BlockNode(blockNodes));
}
