// Assign
public override ASTNode VisitAssignStmt(CLUBSParser.AssignStmtContext context)
{
AssignmentNode node = new AssignmentNode(new SourcePosition(context.start));
node.Left = Visit(context.left) as ExpressionNode;
node.Right = Visit(context.right) as ExpressionNode;
return(node);
}
// Assignment
public override TypeNode Visit(AssignmentNode node, object obj)
{
TypeNode leftType = Visit(node.Left);
TypeNode rightType = Visit(node.Right, leftType);
// If left and right types are not the same, log error
if (leftType != rightType)
{
ErrorLogger.LogError(new IncompatibleTypesError(leftType, rightType, node.Right.SourcePosition));
return(new ErrorTypeNode(node.SourcePosition));
}
return(null);
}
public abstract T Visit(AssignmentNode node, object obj);
// Assignment
public override string Visit(AssignmentNode node, object obj)
{
IdentifiableNode id = node.Left as IdentifiableNode;
return($"{Visit(node.Left, id.Id)} = {Visit(node.Right, id.Id)};\n");
}