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v/cmd/tools/check_os_api_parity.v

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module main
import os
import v.util
import v.pref
import v.builder
import v.ast
import term
const (
base_os = 'linux'
os_names = ['linux', 'macos', 'windows']
skip_modules = [
'builtin.bare', 'builtin.js',
'strconv', 'strconv.ftoa', 'hash.wyhash', 'strings',
'crypto.rand',
'os.bare', 'os2',
'picohttpparser', 'picoev',
'szip',
'v.eval'
]
)
struct App {
diff_cmd string
is_verbose bool
modules []string
mut:
api_differences map[string]int
}
fn main() {
vexe := pref.vexe_path()
vroot := os.dir(vexe)
util.set_vroot_folder(vroot)
os.chdir(vroot)
cmd := util.find_working_diff_command() or {
''
}
mut app := App{
diff_cmd: cmd
is_verbose: os.getenv('VERBOSE').len > 0
modules: if os.args.len > 1 { os.args[1..] } else { all_vlib_modules() }
}
for mname in app.modules {
if !app.is_verbose {
eprintln('Checking module: ${mname} ...')
}
api_base := app.gen_api_for_module_in_os(mname, base_os)
for oname in os_names {
if oname == base_os {
continue
}
api_os := app.gen_api_for_module_in_os(mname, oname)
app.compare_api(api_base, api_os, mname, base_os, oname)
}
}
howmany := app.api_differences.size
eprintln('NB: please, do run `git clean -xf` after this tool, or at least `find thirdparty/ |grep .o$|xargs rm`')
eprintln('otherwise, `./v test-fixed` may show false positives, due to .o files compiled with a cross compiler.')
if howmany > 0 {
eprintln(term.header('Found $howmany modules with different APIs', '='))
for m in app.api_differences.keys() {
eprintln('Module: $m')
}
exit(1)
}
}
fn all_vlib_modules() []string {
mut vlib_v_files := os.walk_ext('vlib', '.v')
mut vmodulesmap := map[string]int{}
for f in vlib_v_files {
if f.contains('/tests/') || f.ends_with('_test.v') {
continue
}
vmodulename := os.dir(f).replace('/', '.').replace('vlib.', '')
if vmodulename in skip_modules {
continue
}
vmodulesmap[vmodulename] = vmodulesmap[vmodulename] + 1
}
mut modules := vmodulesmap.keys()
modules.sort()
return modules
}
fn (app App) gen_api_for_module_in_os(mod_name, os_name string) string {
if app.is_verbose {
eprintln('Checking module: ${mod_name:-30} for OS: ${os_name:-10} ...')
}
mpath := os.join_path('vlib', mod_name.replace('.', '/'))
tmpname := '/tmp/${mod_name}_${os_name}.c'
prefs, _ := pref.parse_args(['-os', os_name, '-o', tmpname, '-shared', mpath])
mut b := builder.new_builder(prefs)
b.compile_c()
mut res := []string{}
for f in b.parsed_files {
for s in f.stmts {
if s is ast.FnDecl {
fnd := s as ast.FnDecl
if fnd.is_pub {
fn_signature := fnd.str(b.table)
fn_mod := fnd.modname()
if fn_mod == mod_name {
fline := '${fn_mod}: $fn_signature'
res << fline
}
}
}
}
}
res.sort()
return res.join('\n')
}
fn (mut app App) compare_api(api_base, api_os, mod_name, os_base, os_target string) {
res := util.color_compare_strings(app.diff_cmd, api_base, api_os)
if res.len > 0 {
summary := 'Different APIs found for module: `${mod_name}`, between OS base: `${os_base}` and OS: `${os_target}`'
eprintln(term.header(summary, '-'))
eprintln(res)
eprintln(term.h_divider('-'))
app.api_differences[mod_name] = 1
}
}