public override void EnterVar_decl([NotNull] GrammarParser.Var_declContext context)
{
var variableName = context.GetChild(1).GetText();
var expression = context.GetChild(3).GetText();
Console.WriteLine(context.GetChild(3).GetText());
if (!LookUpScope(variableName))
{
currentScope.SymbolTable.Add(variableName, expression);
}
else
{
throw new Exception("Variable already exists in local or parent scopes!");
}
base.EnterVar_decl(context);
}
public override bool VisitVar_decl([NotNull] GrammarParser.Var_declContext context)
{
Console.WriteLine("Variable Declaration ");
DataTable dt = new DataTable();
string expression = context.GetChild(3).GetText();
expression = SearchAndReplace(expression);
/*
* if ((!MainScopeClass.MainScope.ContainsKey(context.GetChild(1).GetText())))
* {
* if ((!MainScopeClass.MainScope.ContainsKey(context.GetChild(1).GetText())))
* {
* MainScopeClass.MainScope.Add(context.GetChild(1).GetText(), dt.Compute(expression, ""));
* Console.WriteLine($"HERE: {context.GetChild(1).GetText()} {dt.Compute(expression, "")}");
* }
* else
* {
* //Something
*
* }
*
* }
* else
* {
* throw new Exception("Variable already exists!");
* }
*/
if (scopeCount != 0)
{
scopeCount--;
}
if (scopeCount == 0)
{
//Something?
}
return(base.VisitVar_decl(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="GrammarParser.var_decl"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitVar_decl([NotNull] GrammarParser.Var_declContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="GrammarParser.var_decl"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitVar_decl([NotNull] GrammarParser.Var_declContext context)
{
return(VisitChildren(context));
}