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author | Dave Barach <dave@barachs.net> | 2020-06-18 17:04:18 -0400 |
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committer | Damjan Marion <dmarion@me.com> | 2020-06-19 07:03:34 +0000 |
commit | 961e3c8428be81ae74f7e8ee293b16808a74d45e (patch) | |
tree | e4fbff493e10fb6a6979d0ae503b77e569d8f4f2 /src/vppinfra/cpu.h | |
parent | fb4df27faecde54e610d41a84d9ee71234347316 (diff) |
vlib: add recursive macro expander to debug cli
All of the pieces have been sitting around for years.
Added several debug CLI commands:
"define <variable-name> <value>"
"undefine <variable-name>"
"show macro [noeval]"
"echo <whatever>"
Macros may refer to other macros. To defer evaluation:
"define foo \$(bar)" or some such.
The macro evaluator is not smart about "define foo \$(foo)" or more
complicated circular definitions, so don't do that.
Environment variables are available, simply use $<name-of-environment-vbl>
The macro expander has a table of (overrideable) builtin names, which
are evaluated by calling functions.
Simple example:
echo $USER
define ip1 192.168.1.1/24
define ip2 192.168.2.1/24
loop create
loop create
set int ip address loop0 $ip1
set int ip address loop1 $ip2
show int addr
show macro
undefine ip1
undefine ip2
Type: feature
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I08a800647bac573d8ae3cfd75c40061d41c5f976
Diffstat (limited to 'src/vppinfra/cpu.h')
0 files changed, 0 insertions, 0 deletions