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#compdef valgrind -value-,VALGRIND_OPTS,-default-

local curcontext="$curcontext" state line
local -a cmd common common_mem_null \
  args args_{addrcheck,memcheck,cachegrind,helgrind,lackey,massif,none}

cmd=(
  '1:command name:_command_names -e'
  '*::args :_normal'
)

if [[ $service = *_OPTS* ]]; then
  compset -q
  words=( fake "$words[@]" )
  (( CURRENT++ ))
  cmd=()
fi

common=(
  '--alignment=-[set minimum alignment of allocations]:number'
)

common_read_varinfo=(
  '--read-var-info=-[read DWARF3 debug info]:enable:(yes no)'
)

common_mem_null=(
  '--xml=-[output everything in XML]:enable:(yes no)'
  '--xml-user-comment=-[copy specified string verbatim to XML output]:string'
)

args_addrcheck=(
  $common
  $common_mem_null
  '--partial-loads-ok=-:enable:(yes no)'
  '--freelist-vol=-[volume of freed blocks queue]:blocks'
  '--leak-check=-[search for memory leaks at exit]:enable:(yes no)'
  '--leak-resolution=-[how much bt merging in leak check]:level:(low med high)'
  '--show-reachable=-[show reachable blocks in leak check]:enable:(yes no)'
  '--workaround-gcc296-bugs=-:enable:(yes no)'
)

args_memcheck=(
  $args_addrcheck
  $common_read_varinfo
)

args_cachegrind=(
  '--I1=-[set I1 cache manually]:size,assoc,line_size'
  '--D1=-[set D1 cache manually]:size,assoc,line_size'
  '--L2=-[set L2 cache manually]:size,assoc,line_size'
)

args_helgrind=(
  $common
  $common_read_varinfo
  '--private-stacks=-[assume thread stacks are used privately]:enable:(yes no)'
  '--show-last-access=-[show location of last word access on error]:locations:(no some all)'
)

args_lackey=(
  '--fnname=-[count calls to specified name]:name'
  '--detailed-counts=-[count loads, stores and alu ops]:enable:(yes no)'
)

args_massif=(
  $common
  '--heap=-[profile heap blocks]:enable:(yes no)'
  '--heap-admin=-[specify average admin bytes per heap block]:bytes'
  '--stacks=-[enable profile stacks]:enable:(yes no)'
  '--depth=-[depth of contexts]:depth'
  '--alloc-fn=-[specify alloc function]:function'
  '--format=-[specify format of textual output]:format:(text html)'
)

args_none=(
  $common_mem_null
)

args="args_${${words[(r)--tool=*]#*=}:-memcheck}"

_arguments -C ${(P)args} $cmd \
  '--tool=-[specify valgrind tool]:valgrind tool:->tools' \
  '(-h --help)'{-h,--help}'[show help information]' \
  '--help-debug[show help info including debugging options]' \
  '--version[show version]' \
  '(-q --quiet)'{-q,--quiet}'[run silently; only print error msgs]' \
  '(-v --verbose)'{-v,--verbose}'[be more verbose]' \
  '--trace-children=-[valgrind-ise child processes]:enable:(yes no)' \
  '--track-fds=-[track open file descriptors]:enable:(yes no)' \
  '--time-stamp=-[add timestamps to log messages]:enable:(yes no)' \
  '--log-fd=-[log messages to specified file descriptor]:file descriptor:_file_descriptors' \
  '--log-file=-[log messages to specified file with pid appended]:file:_files' \
  '--log-file-exactly=-[log messages to specified file]:file:_files' \
  '--log-file-qualifier=-[log messages to filename given by specified environment variable]:variable:_parameters -g "*scalar*"' \
  '--log-socket=-[log messages to socket]:ipaddr\:port' \
  '--run-libc-freeres=-[free up glibc memory at exit]:enable:(yes no)' \
  '--sim-hints=-[enable hint]:hint:(lax-ioctls enable-outer)' \
  '--show-emwarns=-[show warnings about emulation limits]:enable:(yes no)' \
  '--kernel-variant=-[handle non-standard kernel variants]:kernel variant:_values -s , kernel\ variant bproc' \
  '--demangle=-[automatically demangle C++ names]:enable:(yes no)' \
  '--num-callers=-[specify no of callers to show in stack traces]:number' \
  '--error-limit=-[stop showing new errors if too many]:enable:(yes no)' \
  '--show-below-main=-[continue stack traces below main()]:enable:(yes no)' \
  '--suppressions=-[suppress errors described in specified file]:file:_files' \
  '--gen-suppressions=-[print suppressions for errors detected]:enable:(yes no)' \
  '--db-attach=-[start debugger when errors detected]:enable:(yes no)' \
  '--db-command=-[specify command to start debugger]:command:_command_names -e' \
  '--input-fd=-[specify file descriptor for input]:file descriptor:_file_descriptors' \
  '--max-stackframe=-[assume stack switch for SP changes larger than specified number of bytes]:bytes' \
  && return

typeset -a tools

if [[ -n "$state" ]]; then
  # `valgrind --tool=` no longer works.
  # The method below is even more hackish, but the only one I could find.
  # Basically uses debug output to find out the directory where the tools are
  # present and lists all executables in that directory.
  # Hope the program provides a neater interface some day!
  tools=(${${${(M)${(f)"$(_call_program tools valgrind --tool=something -d 2> /dev/null)"}:#*launcher launching *something}##*launcher launching }%%something}*(*:t))
  _wanted tools exl 'valgrind tool' compadd $tools && return
fi

return 1

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