80 lines
2.5 KiB
V
80 lines
2.5 KiB
V
import os
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import term
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import flag
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const tools_folder = os.real_path(os.dir(os.executable()))
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const oldvexe = fullpath(tools_folder, 'oldv')
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const oldv_source = fullpath(tools_folder, 'oldv.v')
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const vroot = os.real_path(os.dir(os.dir(tools_folder)))
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const vexe = fullpath(vroot, 'v')
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fn fullpath(folder string, fname string) string {
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return os.real_path(os.join_path_single(folder, exename(fname)))
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}
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fn exename(n string) string {
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if n.ends_with('.v') || os.user_os() != 'windows' {
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return n
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}
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return '${n}.exe'
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}
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struct Context {
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mut:
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old_commit string
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new_commit string
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command string
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}
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fn main() {
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mut fp := flag.new_flag_parser(os.args)
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mut context := Context{}
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fp.application(os.file_name(os.executable()))
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fp.version('0.0.2')
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fp.description('\n Find at what commit a regression occurred.
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To find when a regression happened (regression_bug.v should fail on master):
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./v run cmd/tools/regress.v --old a7019ac --command " ./v run /abs/path/to/regression_bug.v"
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To find when a feature was implemented (feature.v should succeed on master):
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./v run cmd/tools/regress.v --old a7019ac --command "! ./v run /abs/path/to/feature.v"')
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fp.skip_executable()
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//
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context.new_commit = fp.string('new', `n`, 'master', 'The new commit, by default: master.')
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context.old_commit = fp.string('old', `o`, '', 'A known old commit, required (for it, COMMAND should exit with 0).')
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context.command = fp.string('command', `c`, '', 'A command to execute. Should exit with 0 for the *old* commits.')
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fp.finalize() or {}
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if context.old_commit == '' {
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eprintln('--old COMMIT is required')
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exit(1)
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}
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if context.command == '' {
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eprintln('--command "COMMAND" is required')
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exit(2)
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}
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if !os.exists(oldvexe) {
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if 0 != execute('${os.quoted_path(vexe)} -o ${os.quoted_path(oldvexe)} ${os.quoted_path(oldv_source)}') {
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panic('can not compile $oldvexe')
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}
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}
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os.execute('git checkout master')
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os.execute('git bisect reset')
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os.execute('git checkout $context.new_commit')
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os.execute('git bisect start')
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os.execute('git bisect new')
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os.execute('git checkout $context.old_commit')
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os.execute('git bisect old')
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println(term.colorize(term.bright_yellow, term.header('', '-')))
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execute('git bisect run ${os.quoted_path(oldvexe)} --bisect -c "$context.command"')
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println(term.colorize(term.bright_yellow, term.header('', '-')))
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os.execute('git bisect reset')
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os.execute('git checkout master')
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}
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fn execute(cmd string) int {
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eprintln('### $cmd')
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return os.system(cmd)
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}
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