plushie_gleam

-module(plushie@patch).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/plushie/patch.gleam").
-export_type([patch_op/0]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

?MODULEDOC(
    " Patch operations for tree diffs.\n"
    "\n"
    " Produced by `tree.diff` and consumed by `protocol/encode` to send\n"
    " incremental updates to the Rust binary. Each operation targets a\n"
    " node by its path -- a list of integer child indices from the root.\n"
    " For example, `[0, 2]` means \"root's first child, then that node's\n"
    " third child\".\n"
).

-type patch_op() :: {replace_node, list(integer()), plushie@node:node_()} |
    {update_props,
        list(integer()),
        gleam@dict:dict(binary(), plushie@node:prop_value())} |
    {insert_child, list(integer()), integer(), plushie@node:node_()} |
    {remove_child, list(integer()), integer()}.