From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by dcvr.yhbt.net (Postfix) with ESMTP id C201D1F66F for ; Mon, 2 Nov 2020 20:46:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727308AbgKBUoe (ORCPT ); Mon, 2 Nov 2020 15:44:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726711AbgKBUnw (ORCPT ); Mon, 2 Nov 2020 15:43:52 -0500 Received: from mail-ot1-x341.google.com (mail-ot1-x341.google.com [IPv6:2607:f8b0:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11F63C0617A6 for ; Mon, 2 Nov 2020 12:43:52 -0800 (PST) Received: by mail-ot1-x341.google.com with SMTP id h62so13889113oth.9 for ; Mon, 02 Nov 2020 12:43:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=iDmmdb1yMbAVf8rdFEjA/Su1MuMpaeeULyOhTaFe/Yc=; b=dXl6UQtlQ2sDQyri5OFPjbt6NhtlmuyK3t4lNbh2C+nV20ApevilPETWQo7qddU2E+ vFZtGnKdNDt3+bBflnO85CULK9v5aSZeeAciq3jLF+VL5toY3txZ6Z5xTXi1wtosFP4N zozfLVrSB7hnD3txzYZKlEGQt6h75Lt7wJaCk1Z4QlKgoRYXH39wufw6Ov+oSjJCaEzx ZiwtlBcoy8MmnLvjnIRx3eycqhp00XROvX0DZRKcck21y6TMQ2f+10WYBngIQoemOfE0 l6xSMvnEodwk+CXGAz+otFGfR2NBEG9ombvzia9dsBAqC2lYjE4R3K3BgPpYu9+lc44i Auvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=iDmmdb1yMbAVf8rdFEjA/Su1MuMpaeeULyOhTaFe/Yc=; b=Qm5bcVy5AF64/PhjPsy1Q4c60Tpb/kwouOsgXVML1FMVCzFZEnpg7oxf+tAEKBDG+U B107rxeOTkM75OjaaCe38ICVPpLxQKxczpyKWiUbATPRQZxYJXLS8yFqZxvZl6Wsm8xW MWjno+ddQ/+rLL2qie5CJSYYysYJJ5qhB4x2e+8ce2KjtLxgzHCYocoJGL7KV/gbou34 iq0EwPjPDK89TyJFugz2VWlkJTRlqD/bopIEVQxLh4YJjwSgxQsQbf3SGU/nUK7V19pt FkS8utSIlXT1+llCIkQJE4zvIEnOkgcrYQFmmN2la9vUoEBlGdl0eVK/CtVWBGQNFASP BjLw== X-Gm-Message-State: AOAM530MCy3maKWGWfj3P3xLZDJMB31OJ/4H5x+zz1jumSBmqQzuVDki 9CkR5gu8nEs3kK6xiOoCB+kEyPXxMwF64A== X-Google-Smtp-Source: ABdhPJzBSC6xzlyv+QVRiquoyCuk8CNc3Xk5DWqRgYe4HCMO80+gxcKAeiuFOMRo8HN2J+tEruf85A== X-Received: by 2002:a05:6830:2143:: with SMTP id r3mr4388680otd.189.1604349830746; Mon, 02 Nov 2020 12:43:50 -0800 (PST) Received: from tiger.attlocal.net ([2602:30a:2c28:20f0:7c1a:85e3:2ea9:5d7e]) by smtp.gmail.com with ESMTPSA id t27sm3848512otc.14.2020.11.02.12.43.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Nov 2020 12:43:50 -0800 (PST) From: Elijah Newren To: git@vger.kernel.org Cc: Elijah Newren Subject: [PATCH v2 01/20] merge-ort: setup basic internal data structures Date: Mon, 2 Nov 2020 12:43:25 -0800 Message-Id: <20201102204344.342633-2-newren@gmail.com> X-Mailer: git-send-email 2.29.0.471.ga4f56089c0 In-Reply-To: <20201102204344.342633-1-newren@gmail.com> References: <20201102204344.342633-1-newren@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Set up some basic internal data structures. The only carry-over from merge-recursive.c is call_depth, though needed_rename_limit will be added later. The central piece of data will definitely be the strmap "paths", which will map every relevant pathname under consideration to either a merged_info or a conflict_info. ("unmerged" is a strmap that is a subset of "paths".) merged_info contains all relevant information for a non-conflicted entry. conflict_info contains a merged_info, plus any additional information about a conflict such as the higher orders stages involved and the names of the paths those came from (handy once renames get involved). If an entry remains conflicted, the merged_info portion of a conflict_info will later be filled with whatever version of the file should be placed in the working directory (e.g. an as-merged-as-possible variation that contains conflict markers). Signed-off-by: Elijah Newren --- merge-ort.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/merge-ort.c b/merge-ort.c index b487901d3e..9d5ea0930d 100644 --- a/merge-ort.c +++ b/merge-ort.c @@ -17,6 +17,46 @@ #include "cache.h" #include "merge-ort.h" +#include "strmap.h" + +struct merge_options_internal { + struct strmap paths; /* maps path -> (merged|conflict)_info */ + struct strmap unmerged; /* maps path -> conflict_info */ + const char *current_dir_name; + int call_depth; +}; + +struct version_info { + struct object_id oid; + unsigned short mode; +}; + +struct merged_info { + struct version_info result; + unsigned is_null:1; + unsigned clean:1; + size_t basename_offset; + /* + * Containing directory name. Note that we assume directory_name is + * constructed such that + * strcmp(dir1_name, dir2_name) == 0 iff dir1_name == dir2_name, + * i.e. string equality is equivalent to pointer equality. For this + * to hold, we have to be careful setting directory_name. + */ + const char *directory_name; +}; + +struct conflict_info { + struct merged_info merged; + struct version_info stages[3]; + const char *pathnames[3]; + unsigned df_conflict:1; + unsigned path_conflict:1; + unsigned filemask:3; + unsigned dirmask:3; + unsigned match_mask:3; +}; + void merge_switch_to_result(struct merge_options *opt, struct tree *head, struct merge_result *result, -- 2.29.0.471.ga4f56089c0