zsh: complete targets

data/shell-completions/zsh/_meson

@@ -49,8 +49,22 @@ local -a meson_commands=(
 
 # TODO: implement build option completion
 (( $+functions[__meson_build_options] )) || __meson_build_options() {}
-# TODO: implement target name completion
-(( $+functions[__meson_targets] )) || __meson_targets() {}
+
+(( $+functions[__meson_targets] )) || __meson_targets() {
+  local tests_json
+  # TODO: get builddir out of the cmdline and pass it here
+  if tests_json="$(_call_program meson meson introspect --targets)";
+  then
+    local -a tests_ids=$(_call_program python3 python3 -c 'import sys, json;
+for target in json.load(sys.stdin):
+    print(target["id"])
+' <<< "$tests_json")
+    _describe -t "tests" "Meson tests IDs" tests_ids
+  else
+    _message -r "current working directory is not a build directory"
+  fi
+}
+
 # `meson introspect` currently can provide that information in JSON.
 # We can:
 # 1) pipe its output to python3 -m json.tool | grep "$alovelyregex" | cut <...>