public override int VisitAddition(BRAQParser.AdditionContext context)
{
if (context.left != null)
{
context.left.Accept(this);
context.right.Accept(this);
switch (context.op.Text)
{
case "+":
if (type_dict[context.left] == typeof(string))
{
il.EmitCall(OpCodes.Call, typeof(string).GetMethod("Concat",
new[] { typeof(string), typeof(string) }) ?? throw new BindError(), null);
}
else
{
il.Emit(OpCodes.Add);
}
break;
case "-":
il.Emit(OpCodes.Sub);
break;
}
}
else
{
context.right.Accept(this);
}
return(0);
}
/// <summary>
/// Visit a parse tree produced by <see cref="BRAQParser.addition"/>.
/// <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 VisitAddition([NotNull] BRAQParser.AdditionContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="BRAQParser.addition"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitAddition([NotNull] BRAQParser.AdditionContext context)
{
}
public override Type VisitAddition(BRAQParser.AdditionContext context)
{
return(binary_optional_left_expr(context, context.left, context.op, context.right));
}
