How to create mappings with a function?

Question

I am trying to create a function in vim that is capable of creating mappings for me. This is so I don't have to type out very similar commands over and over in my vimrc.

Take these two mappings as examples...

onoremap <buffer> in( :<c-u>execute "normal! /(\r:noh\rvi("<cr>
onoremap <buffer> in[ :<c-u>execute "normal! /[\r:noh\rvi["<cr>

(these are operator-pending mappings for in paren or square bracket)

What the mappings do is not really important for the question, what I would like to know is if I can create a function to remove all the repetition. I would like it to look something like...

CreateNextIn('(')
CreateNextIn('[')
CreateNextIn('{')

which will create the omap for me.

Any help will be greatly appreciated :D

Answer 1

Thanks to @B Layer's comment...

Build mapping as a concatenation of things that don't change as static strings and the things that change as sub-expressions/variables and pass the whole thing to :exe... :exe 'nnoremap <leader>' . mapkey . ' :echo "' . somevar . '"<cr>'

I have been able to answer the question.

Here is the solution to the above problem...

function CreateNextIn(str)
  execute 'onoremap <buffer> in' . a:str . ' :<c-u>execute "normal! /' . a:str . '\r:noh\rvi' . a:str . '"<cr>'
endfunction