zsh/Completion/Base/_value

#compdef -value- -array-value-

_value () {
  # You can customize completion for different parameters by writing a
  # function `_value:<name>', where <name> is the name of the parameter.
  # When completing values of elements of associative arrays, we first
  # search for a function `_value:<assoc>-<key>' and then for 
  # `_value:<assoc>', so it's simple to define different functions
  # for different keys or one function for a whole association.

  if (( $+functions[_value:$compstate[parameter]] )); then
    "_value:$compstate[parameter]" "$@"
  elif (( $+functions[_value:${compstate[parameter]%%-*}] )); then
    "_value:${compstate[parameter]%%-*}" "$@"
  elif [[ "$compstate[parameter]" != *-* &&
          "${(Pt)${compstate[parameter]}}" = assoc* ]]; then
    if (( CURRENT & 1 )); then
      _wanted association-keys expl 'association key' \
          compadd -k "$compstate[parameter]"
    else
      compstate[parameter]="${compstate[parameter]}-${words[CURRENT-1]}"
      _value "$@"
    fi
  else
    local pats

    if { zstyle -a ":completion:${curcontext}:" assign-list pats &&
         [[ "$compstate[parameter]" = (${(j:|:)~pats}) ]] } ||
       [[ "$PREFIX$SUFFIX" = *:* ]]; then
      compset -P '*:'
      compset -S ':*'
      _default -r '\-\n\t /:' "$@"
    else
      _default "$@"
    fi
  fi
}

_value:CPPFLAGS () {
  compset -q
  if compset -P '-I'; then
    _files -/ "$@"
  else
    _default "$@"
  fi
}

_value:LDFLAGS () {
  compset -q
  if compset -P '-L'; then
    _files -/ "$@"
  elif compset -P '-R'; then
    compset -P '*:'
    compset -S ':*'
    _files -/ -S/ -r '\n\t\- /:' "$@"
  else
    _default "$@"
  fi
}

_value "$@"