core: support integer expressions in various commands

For convenience, many commands now accept integer expressions
rather than only simple integers.

These are:

    loop, range, incr, string repeat, lrepeat, pack, unpack, rand

This simplifies many cases where previously expr {} or $() was required.
e.g.

    foreach i [range 4+1 2*$b] { ... }
    string repeat 2**$n a

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 2 insertions, 0 deletions

diff --git a/jim.h b/jim.h
index a1e4c46..8bc90ab 100644
--- a/jim.h
+++ b/jim.h
@@ -849,6 +849,8 @@ JIM_EXPORT int Jim_GetBoolean(Jim_Interp *interp, Jim_Obj *objPtr,
 /* integer object */
 JIM_EXPORT int Jim_GetWide (Jim_Interp *interp, Jim_Obj *objPtr,
         jim_wide *widePtr);
+JIM_EXPORT int Jim_GetWideExpr(Jim_Interp *interp, Jim_Obj *objPtr,
+        jim_wide *widePtr);
 JIM_EXPORT int Jim_GetLong (Jim_Interp *interp, Jim_Obj *objPtr,
         long *longPtr);
 #define Jim_NewWideObj  Jim_NewIntObj