On Mon, Jul 05, 2021 at 03:47:47PM -0400, Sean Anderson wrote: > On 7/5/21 3:10 PM, Tom Rini wrote: > > On Sat, Jul 03, 2021 at 09:33:30PM +0200, Wolfgang Denk wrote: > > > Dear Sean, > > > > > > In message <8bbdb7a1-5085-a3b7-614f-12ae9aee8...@gmail.com> you wrote: > > > > > > > > > For a partial list, see > > > > > > > > > > [1] https://github.com/Forty-Bot/lil/commits/master > > > > > > > > Whoops, looks like I completely misread what you were asking here. I > > > > don't have an exhaustive list of differences, but here are some similar > > > > things expressed in both languages: > > > > > > > > sh tcl > > > > > > > > foo=bar set foo bar > > > > echo $foo echo $foo > > > > > > > > if [ 1 -gt 2 ]; then if {1 > 2} { > > > > echo a echo a > > > > else } { > > > > echo b echo b > > > > fi } > > The left side is possible with something like > > if itest 1 -gt 2; then # etc. > > > > > > > > > foo() { proc foo {first second} { > > > > echo $1 $2 echo $first $second > > > > } } > > This is not possible. We only have eval (run) as of today. I view adding > functions as one of the most important usability improvements we can > make. > > > > > > > > > for file in $(ls *.c); do foreach file [glob *.c] { > > > > echo $file echo $file > > > > done } > > This is possible only if you already have a list of files. For example, > one could do > > part list mmc 0 -bootable parts > for p in $parts; do #etc > > but the part command is one of the only ones which produces output in > the correct format. If you want to (e.g.) dynamically construct a list > you will have a much harder time. > > > > > fact() { > > > > if [ $1 -eq 0 ]; then > > > > echo 1 > > > > else > > > > echo $(($1 * $(fact $(($1 - 1))))) > > > > fi > > > > } > > This is technically possible with run and setexpr, but fairly cumbersome > to do. > > > > > > > > > proc fact {n} { > > > > if {$n} { > > > > expr {$n * [fact [expr > > > > {$n - 1}]]} > > > > } { > > > > return 1 > > > > } > > > > } > > > > > > > > Hopefully this gives you a bit of a feel for the basic differences. > > > > Which of these things, from each column, can you do in the context of > > U-Boot? That's important too. > > See above.
And for clarity, on the LIL side, with a few things like needing to bring in the list of files somehow, all of those would work in U-Boot? -- Tom
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