1 | import os |
2 | import term |
3 | import flag |
4 | |
5 | const tools_folder = os.real_path(os.dir(os.executable())) |
6 | |
7 | const oldvexe = fullpath(tools_folder, 'oldv') |
8 | |
9 | const oldv_source = fullpath(tools_folder, 'oldv.v') |
10 | |
11 | const vroot = os.real_path(os.dir(os.dir(tools_folder))) |
12 | |
13 | const vexe = fullpath(vroot, 'v') |
14 | |
15 | fn fullpath(folder string, fname string) string { |
16 | return os.real_path(os.join_path_single(folder, exename(fname))) |
17 | } |
18 | |
19 | fn exename(n string) string { |
20 | if n.ends_with('.v') || os.user_os() != 'windows' { |
21 | return n |
22 | } |
23 | return '${n}.exe' |
24 | } |
25 | |
26 | struct Context { |
27 | mut: |
28 | old_commit string |
29 | new_commit string |
30 | command string |
31 | } |
32 | |
33 | fn main() { |
34 | mut fp := flag.new_flag_parser(os.args) |
35 | mut context := Context{} |
36 | fp.application(os.file_name(os.executable())) |
37 | fp.version('0.0.2') |
38 | fp.description('\n Find at what commit a regression occurred. |
39 | To find when a regression happened (regression_bug.v should fail on master): |
40 | ./v run cmd/tools/regress.v --old a7019ac --command " ./v run /abs/path/to/regression_bug.v" |
41 | To find when a feature was implemented (feature.v should succeed on master): |
42 | ./v run cmd/tools/regress.v --old a7019ac --command "! ./v run /abs/path/to/feature.v"') |
43 | fp.skip_executable() |
44 | // |
45 | context.new_commit = fp.string('new', `n`, 'master', 'The new commit, by default: master.') |
46 | context.old_commit = fp.string('old', `o`, '', 'A known old commit, required (for it, COMMAND should exit with 0).') |
47 | context.command = fp.string('command', `c`, '', 'A command to execute. Should exit with 0 for the *old* commits.') |
48 | fp.finalize() or {} |
49 | if context.old_commit == '' { |
50 | eprintln('--old COMMIT is required') |
51 | exit(1) |
52 | } |
53 | if context.command == '' { |
54 | eprintln('--command "COMMAND" is required') |
55 | exit(2) |
56 | } |
57 | if !os.exists(oldvexe) { |
58 | if 0 != execute('${os.quoted_path(vexe)} -o ${os.quoted_path(oldvexe)} ${os.quoted_path(oldv_source)}') { |
59 | panic('can not compile ${oldvexe}') |
60 | } |
61 | } |
62 | os.execute('git checkout master') |
63 | os.execute('git bisect reset') |
64 | os.execute('git checkout ${context.new_commit}') |
65 | os.execute('git bisect start') |
66 | os.execute('git bisect new') |
67 | os.execute('git checkout ${context.old_commit}') |
68 | os.execute('git bisect old') |
69 | println(term.colorize(term.bright_yellow, term.header('', '-'))) |
70 | execute('git bisect run ${os.quoted_path(oldvexe)} --bisect -c "${context.command}"') |
71 | println(term.colorize(term.bright_yellow, term.header('', '-'))) |
72 | os.execute('git bisect reset') |
73 | os.execute('git checkout master') |
74 | } |
75 | |
76 | fn execute(cmd string) int { |
77 | eprintln('### ${cmd}') |
78 | return os.system(cmd) |
79 | } |