/// <summary>
/// This method prints the elseifStatementNode and make an indentation
/// It accepts the Val and Expressions if there exist any
/// Then it accepts all the statements and then lastly outdent
/// </summary>
/// <param name="elseifStatementNode">The node to print.</param>
/// <returns>Returns null</returns>
public override object Visit(ElseifStatementNode elseifStatementNode)
{
Print("ElseifStatementNode");
Indent++;
elseifStatementNode.Val?.Accept(this);
elseifStatementNode.Expression?.Accept(this);
if (elseifStatementNode.Statements.Any())
{
elseifStatementNode.Statements.ForEach(node => node.Accept(this));
}
Indent--;
return(null);
}
/// <summary>
/// This method type checks the ElseIfStatementNode node in the AST.
/// </summary>
/// <param name="elseifStatementNode">The node to check.</param>
/// <returns>Returns null</returns>
public override object Visit(ElseifStatementNode elseifStatementNode)
{
CurrentScope = GlobalScope.FindChild($"{elseifStatementNode.Type}_{elseifStatementNode.Line}");
if (((TypeContext)elseifStatementNode.Expression.Accept(this)).Type == BOOL)
{
elseifStatementNode.Statements.ForEach(stmnt => stmnt.Accept(this));
}
else
{
new InvalidTypeException($"Else if statement expected a boolean expression at {elseifStatementNode.Line}:{elseifStatementNode.Offset}");
}
CurrentScope = CurrentScope.Parent ?? GlobalScope;
return(null);
}
/// <summary>
/// This method visits an elseif statement node
/// It checks if there is an expression to accepts
/// Then it accepts any statement
/// </summary>
/// <param name="elseifStatementNode">The name of the node</param>
/// <returns>It returns an else if</returns>
public override object Visit(ElseifStatementNode elseifStatementNode)
{
string elseif = "else if (";
elseif += elseifStatementNode.Expression?.Accept(this);
elseif += "){";
if (elseifStatementNode.Statements.Any())
{
elseifStatementNode.Statements.ForEach(node => node.Parent = elseifStatementNode);
elseifStatementNode.Statements.ForEach(node => elseif += node.Accept(this));
}
elseif += ("}");
return(elseif);
}
/// <summary> /// This visits an ElseIf statement /// </summary> /// <param name="elseifStatementNode">The visited node</param> /// <returns></returns> public abstract object Visit(ElseifStatementNode elseifStatementNode);