From patchwork Wed Sep 7 14:37:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phillip Wood X-Patchwork-Id: 12969059 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40CAFC6FA89 for ; Wed, 7 Sep 2022 14:38:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229876AbiIGOiK (ORCPT ); Wed, 7 Sep 2022 10:38:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229677AbiIGOh7 (ORCPT ); Wed, 7 Sep 2022 10:37:59 -0400 Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4043E7755C for ; Wed, 7 Sep 2022 07:37:58 -0700 (PDT) Received: by mail-wm1-x32b.google.com with SMTP id d12-20020a05600c34cc00b003a83d20812fso9666258wmq.1 for ; Wed, 07 Sep 2022 07:37:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:mime-version:content-transfer-encoding:fcc:subject:date:from :references:in-reply-to:message-id:from:to:cc:subject:date; bh=l85nBnlGEJZ7I0Tetme70BjmV9LBB9ZHP/7uw8NOMII=; b=YnFBaTlCYlL/hb9d56G+qZIW3T3kzs3FidcsYkFZZs2ZXfiJ02kAoUVmM+h8Y4tDXm Jf71Kr11TQBtI/1ZrpTIQ+mbDSxxU9XC+ntdl7tLBCpbVBM+F2JsyiKdtiOB0KuQ1Gt0 U4Lih0q2cugIHmBj75t+Ygxlkl+gRSiVXDNoOkNUYnbEVlPvyoi1lNd8V6pY7CCLFdsI 8fxs+O4T/OLvV9cHWXQzSA8cVD50W7Cl0cPumUU4Ta1jR8DIiDdaS10phpx46HKVk3Rv /SQC+c7oSR0FG0BXhSXDJKIClT2vmRDn8ZomYQXaWM+h534j38N9DJnKcCuaFge44FBu CE6Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:mime-version:content-transfer-encoding:fcc:subject:date:from :references:in-reply-to:message-id:x-gm-message-state:from:to:cc :subject:date; bh=l85nBnlGEJZ7I0Tetme70BjmV9LBB9ZHP/7uw8NOMII=; b=aqbTDMBUtjv17RtLgcEQGXisKj0sgWFSu0cgQXt8aL2nRnHwGfGcod5UPXNfG9Wq1w Mi89nr1Ah0VtQm2li9nr/fim8Ve9iePiC1QNUBxfRSyKVzbLcXCQPf9w9wqaxRZf3ivs Kfhh/D9PeZ0jF6o2uK9V93+gee3WUcCQKyhynVVbTjdLyLIGc1QwY4LKIqTiV+VR4cZq gF5mQsPKP5dVjhcdpF8Oz6P9Y/oWHx60RkXALdwAiuJIAL5jceyF/+oOMXozYojxodNY rDFbw+BrWnnqmWv94i9xr+8Mh2Tow50tYCSBe4Q/Rs0FjhyuIQc9Iw8QcADR15iUDe7o jGkQ== X-Gm-Message-State: ACgBeo3qMj/MauFWhcUhyRJ2zaNHa+1rVz8/t/g1PSVKGzriI8xU39Xf b/2x+zD59hOhhRM160ReKUeivF6SzIM= X-Google-Smtp-Source: AA6agR4L9G9eRWF8K1flh+qihde/FSRmoKTJhC6cJkgytk0Tg0usaKf+FA1NH429qCj0RZcqawFSsA== X-Received: by 2002:a05:600c:582:b0:3a5:4f7b:3146 with SMTP id o2-20020a05600c058200b003a54f7b3146mr2267162wmd.152.1662561476523; Wed, 07 Sep 2022 07:37:56 -0700 (PDT) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id n30-20020a05600c501e00b003a61306d79dsm22555320wmr.41.2022.09.07.07.37.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Sep 2022 07:37:55 -0700 (PDT) Message-Id: <9daee95d434155742dbb19271eea8c0bc05eb365.1662561470.git.gitgitgadget@gmail.com> In-Reply-To: References: Date: Wed, 07 Sep 2022 14:37:46 +0000 Subject: [PATCH v2 3/7] rebase: store orig_head as a commit Fcc: Sent MIME-Version: 1.0 To: git@vger.kernel.org Cc: Philippe Blain , Denton Liu , Johannes Schindelin , Phillip Wood , Elijah Newren , Junio C Hamano , Jonathan Tan , Phillip Wood , Phillip Wood Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Phillip Wood From: Phillip Wood Using a struct commit rather than a struct oid to hold orig_head means that we error out straight away if the branch being rebased does not point to a commit. It also simplifies the code that handles finding the merge base and fork point as it no longer has to convert from an oid to a commit. Signed-off-by: Phillip Wood --- builtin/rebase.c | 61 +++++++++++++++++++++--------------------------- 1 file changed, 27 insertions(+), 34 deletions(-) diff --git a/builtin/rebase.c b/builtin/rebase.c index 56e4214b441..a3cf1ef5923 100644 --- a/builtin/rebase.c +++ b/builtin/rebase.c @@ -68,7 +68,7 @@ struct rebase_options { const char *upstream_name; const char *upstream_arg; char *head_name; - struct object_id orig_head; + struct commit *orig_head; struct commit *onto; const char *onto_name; const char *revisions; @@ -261,13 +261,13 @@ static int do_interactive_rebase(struct rebase_options *opts, unsigned flags) struct replay_opts replay = get_replay_opts(opts); struct string_list commands = STRING_LIST_INIT_DUP; - if (get_revision_ranges(opts->upstream, opts->onto, &opts->orig_head, + if (get_revision_ranges(opts->upstream, opts->onto, &opts->orig_head->object.oid, &revisions, &shortrevisions)) return -1; if (init_basic_state(&replay, opts->head_name ? opts->head_name : "detached HEAD", - opts->onto, &opts->orig_head)) { + opts->onto, &opts->orig_head->object.oid)) { free(revisions); free(shortrevisions); @@ -298,9 +298,8 @@ static int do_interactive_rebase(struct rebase_options *opts, unsigned flags) split_exec_commands(opts->cmd, &commands); ret = complete_action(the_repository, &replay, flags, shortrevisions, opts->onto_name, opts->onto, - &opts->orig_head, &commands, opts->autosquash, - opts->update_refs, - &todo_list); + &opts->orig_head->object.oid, &commands, + opts->autosquash, opts->update_refs, &todo_list); } string_list_clear(&commands, 0); @@ -448,7 +447,8 @@ static int read_basic_state(struct rebase_options *opts) } else if (!read_oneliner(&buf, state_dir_path("head", opts), READ_ONELINER_WARN_MISSING)) return -1; - if (get_oid(buf.buf, &opts->orig_head)) + opts->orig_head = lookup_commit_reference_by_name(buf.buf); + if (!opts->orig_head) return error(_("invalid orig-head: '%s'"), buf.buf); if (file_exists(state_dir_path("quiet", opts))) @@ -517,7 +517,7 @@ static int rebase_write_basic_state(struct rebase_options *opts) write_file(state_dir_path("onto", opts), "%s", opts->onto ? oid_to_hex(&opts->onto->object.oid) : ""); write_file(state_dir_path("orig-head", opts), "%s", - oid_to_hex(&opts->orig_head)); + oid_to_hex(&opts->orig_head->object.oid)); if (!(opts->flags & REBASE_NO_QUIET)) write_file(state_dir_path("quiet", opts), "%s", ""); if (opts->flags & REBASE_VERBOSE) @@ -646,7 +646,7 @@ static int run_am(struct rebase_options *opts) /* this is now equivalent to !opts->upstream */ &opts->onto->object.oid : &opts->upstream->object.oid), - oid_to_hex(&opts->orig_head)); + oid_to_hex(&opts->orig_head->object.oid)); rebased_patches = xstrdup(git_path("rebased-patches")); format_patch.out = open(rebased_patches, @@ -680,7 +680,7 @@ static int run_am(struct rebase_options *opts) free(rebased_patches); strvec_clear(&am.args); - ropts.oid = &opts->orig_head; + ropts.oid = &opts->orig_head->object.oid; ropts.branch = opts->head_name; ropts.default_reflog_action = DEFAULT_REFLOG_ACTION; reset_head(the_repository, &ropts); @@ -833,7 +833,7 @@ static int checkout_up_to_date(struct rebase_options *options) strbuf_addf(&buf, "%s: checkout %s", getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options->switch_to); - ropts.oid = &options->orig_head; + ropts.oid = &options->orig_head->object.oid; ropts.branch = options->head_name; ropts.flags = RESET_HEAD_RUN_POST_CHECKOUT_HOOK; if (!ropts.branch) @@ -866,15 +866,11 @@ static int is_linear_history(struct commit *from, struct commit *to) static int can_fast_forward(struct commit *onto, struct commit *upstream, struct commit *restrict_revision, - struct object_id *head_oid, struct object_id *merge_base) + struct commit *head, struct object_id *merge_base) { - struct commit *head = lookup_commit(the_repository, head_oid); struct commit_list *merge_bases = NULL; int res = 0; - if (!head) - goto done; - merge_bases = get_merge_bases(onto, head); if (!merge_bases || merge_bases->next) { oidcpy(merge_base, null_oid()); @@ -1312,13 +1308,13 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) if (read_basic_state(&options)) exit(1); - ropts.oid = &options.orig_head; + ropts.oid = &options.orig_head->object.oid; ropts.branch = options.head_name; ropts.flags = RESET_HEAD_HARD; ropts.default_reflog_action = DEFAULT_REFLOG_ACTION; if (reset_head(the_repository, &ropts) < 0) die(_("could not move back to %s"), - oid_to_hex(&options.orig_head)); + oid_to_hex(&options.orig_head->object.oid)); remove_branch_state(the_repository, 0); ret = finish_rebase(&options); goto cleanup; @@ -1610,17 +1606,17 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) /* Is it a local branch? */ strbuf_reset(&buf); strbuf_addf(&buf, "refs/heads/%s", branch_name); - if (!read_ref(buf.buf, &options.orig_head)) { + options.orig_head = lookup_commit_reference_by_name(buf.buf); + if (options.orig_head) { die_if_checked_out(buf.buf, 1); options.head_name = xstrdup(buf.buf); /* If not is it a valid ref (branch or commit)? */ } else { - struct commit *commit = + options.orig_head = lookup_commit_reference_by_name(branch_name); - if (!commit) + if (!options.orig_head) die(_("no such branch/commit '%s'"), branch_name); - oidcpy(&options.orig_head, &commit->object.oid); options.head_name = NULL; } } else if (argc == 0) { @@ -1639,8 +1635,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) FREE_AND_NULL(options.head_name); branch_name = "HEAD"; } - if (get_oid("HEAD", &options.orig_head)) - die(_("Could not resolve HEAD to a revision")); + options.orig_head = lookup_commit_reference_by_name("HEAD"); + if (!options.orig_head) + die(_("Could not resolve HEAD to a commit")); } else BUG("unexpected number of arguments left to parse"); @@ -1672,13 +1669,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) options.onto_name); } - if (options.fork_point > 0) { - struct commit *head = - lookup_commit_reference(the_repository, - &options.orig_head); + if (options.fork_point > 0) options.restrict_revision = - get_fork_point(options.upstream_name, head); - } + get_fork_point(options.upstream_name, options.orig_head); if (repo_read_index(the_repository) < 0) die(_("could not read index")); @@ -1708,7 +1701,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) * call it before checking allow_preemptive_ff. */ if (can_fast_forward(options.onto, options.upstream, options.restrict_revision, - &options.orig_head, &merge_base) && + options.orig_head, &merge_base) && allow_preemptive_ff) { int flag; @@ -1785,7 +1778,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) strbuf_addf(&msg, "%s: checkout %s", getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name); ropts.oid = &options.onto->object.oid; - ropts.orig_head = &options.orig_head, + ropts.orig_head = &options.orig_head->object.oid, ropts.flags = RESET_HEAD_DETACH | RESET_ORIG_HEAD | RESET_HEAD_RUN_POST_CHECKOUT_HOOK; ropts.head_msg = msg.buf; @@ -1799,7 +1792,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) * we just fast-forwarded. */ strbuf_reset(&msg); - if (oideq(&merge_base, &options.orig_head)) { + if (oideq(&merge_base, &options.orig_head->object.oid)) { printf(_("Fast-forwarded %s to %s.\n"), branch_name, options.onto_name); strbuf_addf(&msg, "rebase finished: %s onto %s", @@ -1820,7 +1813,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) (options.restrict_revision ? oid_to_hex(&options.restrict_revision->object.oid) : oid_to_hex(&options.upstream->object.oid)), - oid_to_hex(&options.orig_head)); + oid_to_hex(&options.orig_head->object.oid)); options.revisions = revisions.buf;