public static ReturnStatementNode parse(int TokenNumber)
{
ReturnStatementNode node = new ReturnStatementNode();
if (!Parser.NeededToken(TokenNumber, "value", "return", 0))
{
node.BadParsed = true;
node.ErrorLine = Parser.TokensArray[Math.Min(TokenNumber, Parser.TokensArray.Length - 1)].Line;
return(node);
}
TokenNumber++;
ExpressionNode ExprNode = ExpressionParser.parse(TokenNumber);
if (ExprNode.BadParsed)
{
node.IsVoid = true;
}
else
{
node.SetExpression(ExprNode);
TokenNumber = ExprNode.TokenNumber;
}
node.TokenNumber = TokenNumber;
return(node);
}
public static List <Node> parse(int TokenNumber)
{
List <Node> BodyNodes = new List <Node>();
while (true)
{
if (!(Parser.NeededToken(TokenNumber, "type", "name", 0) ||
Parser.NeededToken(TokenNumber, "value", "while", 0) ||
Parser.NeededToken(TokenNumber, "value", "if", 0) ||
Parser.NeededToken(TokenNumber, "value", "return", 0) ||
Parser.NeededToken(TokenNumber, "value", "var", 0) ||
Parser.NeededToken(TokenNumber, "value", "this", 0)))
{
return(BodyNodes);
}
VariableDeclarationNode VariableNode = VariableDeclarationParser.parse(TokenNumber);
if (!VariableNode.BadParsed)
{
BodyNodes.Add(VariableNode);
TokenNumber = VariableNode.TokenNumber;
continue;
}
AssignmentNode anode = AssignmentParser.parse(TokenNumber);
if (!anode.BadParsed)
{
BodyNodes.Add(anode);
TokenNumber = anode.TokenNumber;
continue;
}
WhileLoopNode LoopNode = WhileLoopParser.parse(TokenNumber);
if (!LoopNode.BadParsed)
{
BodyNodes.Add(LoopNode);
TokenNumber = LoopNode.TokenNumber;
continue;
}
IfStatementNode IfNode = IfStatementParser.parse(TokenNumber);
if (!IfNode.BadParsed)
{
BodyNodes.Add(IfNode);
TokenNumber = IfNode.TokenNumber;
continue;
}
ReturnStatementNode ReturnNode = ReturnStatementParser.parse(TokenNumber);
if (!ReturnNode.BadParsed)
{
BodyNodes.Add(ReturnNode);
TokenNumber = ReturnNode.TokenNumber;
continue;
}
CallNode cnode = CallParser.parse(TokenNumber);
if (cnode.BadParsed)
{
Node node = new Node();
node.BadParsed = true;
node.ErrorLine = Math.Max(Math.Max(VariableNode.ErrorLine, anode.ErrorLine),
Math.Max(LoopNode.ErrorLine, IfNode.ErrorLine));
node.ErrorLine = Math.Max(Math.Max(ReturnNode.ErrorLine, cnode.ErrorLine), node.ErrorLine); //deepest parsing error
BodyNodes.Add(node);
return(BodyNodes);
}
BodyNodes.Add(cnode);
TokenNumber = cnode.TokenNumber;
if (TokenNumber >= Parser.TokensArray.Length) //if tokens ended
{
Node node = new Node();
node.BadParsed = true;
node.ErrorLine = Parser.TokensArray[Parser.TokensArray.Length - 1].Line;
return(BodyNodes);
}
}
}
