#!/bin/bash

# Generates a compile_commands.json file at $(bazel info execution_root) for
# your Clang tooling needs.

set -e

bazel build \
  --experimental_action_listener=//kythe/cxx/tools/generate_compile_commands:extract_json \
  --noshow_progress \
  --noshow_loading_progress \
  $[bazel query 'kind(cc_.*, //...)] > /dev/null

pushd $[bazel info execution_root] > /dev/null
echo "[" > compile_commands.json
find . -name '*.compile_command.json' -exec bash -c 'cat {} && echo ,' ';' >> compile_commands.json
sed -i '$s/,$//' compile_commands.json
echo "]" >> compile_commands.json
popd > /dev/null

(CommandList
  children: [
    (C {(set)} {(-e)})
    (SimpleCommand
      words: [
        {(bazel)}
        {(build)}
        {(--experimental_action_listener) (Lit_Other "=") 
          (//kythe/cxx/tools/generate_compile_commands) (Lit_Other ":") (extract_json)
        }
        {(--noshow_progress)}
        {(--noshow_loading_progress)}
        {
          (CommandSubPart
            command_list: 
              (CommandList
                children: [(C {(bazel)} {(query)} {(SQ <"kind(cc_.*, //...)">)})]
              )
            left_token: <Left_CommandSub "$(">
            spids: [38 46]
          )
        }
      ]
      redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(/dev/null)} spids:[48])]
    )
    (SimpleCommand
      words: [
        {(pushd)}
        {
          (CommandSubPart
            command_list: (CommandList children:[(C {(bazel)} {(info)} {(execution_root)})])
            left_token: <Left_CommandSub "$(">
            spids: [55 61]
          )
        }
      ]
      redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(/dev/null)} spids:[63])]
    )
    (SimpleCommand
      words: [{(echo)} {(DQ ("["))}]
      redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(compile_commands.json)} spids:[73])]
    )
    (SimpleCommand
      words: [
        {(find)}
        {(.)}
        {(-name)}
        {(SQ <"*.compile_command.json">)}
        {(-exec)}
        {(bash)}
        {(-c)}
        {(SQ <"cat {} && echo ,">)}
        {(EscapedLiteralPart token:<Lit_EscapedChar "\\;">)}
      ]
      redirects: [(Redir op_id:Redir_DGreat fd:-1 arg_word:{(compile_commands.json)} spids:[99])]
    )
    (C {(sed)} {(-i)} {(SQ <"$s/,$//">)} {(compile_commands.json)})
    (SimpleCommand
      words: [{(echo)} {(DQ ("]"))}]
      redirects: [(Redir op_id:Redir_DGreat fd:-1 arg_word:{(compile_commands.json)} spids:[119])]
    )
    (SimpleCommand
      words: [{(popd)}]
      redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(/dev/null)} spids:[125])]
    )
  ]
)