X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=folly%2FFormatArg.h;h=c4d94736aa6b39c25896ee17c3dc673386c9702b;hb=140c62d25d930cdbdacaa337d254a2471875a4be;hp=bcf4c476602e3c4e7eac549b23e9e3e0535464db;hpb=275ca94d04e44f28cfa411668eb1c1dd8db90b80;p=folly.git

diff --git a/folly/FormatArg.h b/folly/FormatArg.h
index bcf4c476..c4d94736 100644
--- a/folly/FormatArg.h
+++ b/folly/FormatArg.h
@@ -48,6 +48,7 @@ struct FormatArg {
       thousandsSeparator(false),
       trailingDot(false),
       width(kDefaultWidth),
+      widthIndex(kNoIndex),
       precision(kDefaultPrecision),
       presentation(kDefaultPresentation),
       nextKeyMode_(NextKeyMode::NONE) {
@@ -135,10 +136,13 @@ struct FormatArg {
   bool trailingDot;
 
   /**
-   * Field width
+   * Field width and optional argument index
    */
   static constexpr int kDefaultWidth = -1;
+  static constexpr int kDynamicWidth = -2;
+  static constexpr int kNoIndex = -1;
   int width;
+  int widthIndex;
 
   /**
    * Precision