public override Type VisitLiteral(BRAQParser.LiteralContext context)
{
if (context.num != null)
{
return(type_dict[context] = typeof(int));
}
if (context.str != null)
{
return(type_dict[context] = typeof(string));
}
if (context.var_node_ != null)
{
return(type_dict[context] = context.var_node_.Accept(this));
}
if (context.double_num != null)
{
return(type_dict[context] = typeof(double));
}
if (context.containing_group != null)
{
return(type_dict[context] = context.containing_group.Accept(this));
}
throw new NotImplementedException();
}
public override int VisitLiteral(BRAQParser.LiteralContext context)
{
if (context.num != null)
{
il.Emit(OpCodes.Ldc_I4, int.Parse(context.num.Text));
}
else if (context.str != null)
{
//строки хронятся вместе с кавычками, уберём их
string based = context.str.Text;
string unquoted = based.Substring(1, based.Length - 2);
il.Emit(OpCodes.Ldstr, unquoted);
}
else if (context.double_num != null)
{
Console.WriteLine($"double constant {context.double_num.Text}");
il.Emit(OpCodes.Ldc_R8, double.Parse(context.double_num.Text, new CultureInfo("en-us")));
}
else if (context.var_node_ != null)
{
context.var_node_.Accept(this); //variable
}
else if (context.containing_group != null)
{
context.containing_group.Accept(this);
}
else
{
throw new NotImplementedException();
}
return(0);
}
/// <summary>
/// Visit a parse tree produced by <see cref="BRAQParser.literal"/>.
/// <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 VisitLiteral([NotNull] BRAQParser.LiteralContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="BRAQParser.literal"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitLiteral([NotNull] BRAQParser.LiteralContext context)
{
}
