v/cmd/tools/vmissdoc.v

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// Copyright (c) 2020 Lars Pontoppidan. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
import os
import flag
const (
tool_name = 'v missdoc'
tool_version = '0.0.5'
tool_description = 'Prints all V functions in .v files under PATH/, that do not yet have documentation comments.'
work_dir_prefix = normalise_path(os.real_path(os.wd_at_startup) + '/')
)
struct UndocumentedFN {
line int
signature string
tags []string
}
struct Options {
show_help bool
collect_tags bool
deprecated bool
private bool
js bool
no_line_numbers bool
exclude []string
relative_paths bool
verify bool
}
fn (opt Options) report_undocumented_functions_in_path(path string) int {
mut files := []string{}
collect(path, mut files, fn (npath string, mut accumulated_paths []string) {
if !npath.ends_with('.v') {
return
}
if npath.ends_with('_test.v') {
return
}
accumulated_paths << npath
})
mut undocumented_fn_total := 0
for file in files {
if !opt.js && file.ends_with('.js.v') {
continue
}
if opt.exclude.len > 0 && opt.exclude.any(file.contains(it)) {
continue
}
undocumented_fn_total += opt.report_undocumented_functions_in_file(file)
}
return undocumented_fn_total
}
fn (opt &Options) report_undocumented_functions_in_file(nfile string) int {
file := os.real_path(nfile)
contents := os.read_file(file) or { panic(err) }
lines := contents.split('\n')
mut info := []UndocumentedFN{}
for i, line in lines {
if line.starts_with('pub fn') || (opt.private && (line.starts_with('fn ')
&& !(line.starts_with('fn C.') || line.starts_with('fn main')))) {
// println('Match: $line')
if i > 0 && lines.len > 0 {
mut line_above := lines[i - 1]
if !line_above.starts_with('//') {
mut tags := []string{}
mut grab := true
for j := i - 1; j >= 0; j-- {
prev_line := lines[j]
if prev_line.contains('}') { // We've looked back to the above scope, stop here
break
} else if prev_line.starts_with('[') {
tags << collect_tags(prev_line)
continue
} else if prev_line.starts_with('//') { // Single-line comment
grab = false
break
}
}
if grab {
clean_line := line.all_before_last(' {')
info << UndocumentedFN{i + 1, clean_line, tags}
}
}
}
}
}
if info.len > 0 {
for undocumented_fn in info {
mut line_numbers := '$undocumented_fn.line:0:'
if opt.no_line_numbers {
line_numbers = ''
}
tags_str := if opt.collect_tags && undocumented_fn.tags.len > 0 {
'$undocumented_fn.tags'
} else {
''
}
ofile := if opt.relative_paths {
nfile.replace(work_dir_prefix, '')
} else {
os.real_path(nfile)
}
if opt.deprecated {
println('$ofile:$line_numbers$undocumented_fn.signature $tags_str')
} else {
mut has_deprecation_tag := false
for tag in undocumented_fn.tags {
if tag.starts_with('deprecated') {
has_deprecation_tag = true
break
}
}
if !has_deprecation_tag {
println('$ofile:$line_numbers$undocumented_fn.signature $tags_str')
}
}
}
}
return info.len
}
fn normalise_path(path string) string {
return path.replace('\\', '/')
}
fn collect(path string, mut l []string, f fn (string, mut []string)) {
if !os.is_dir(path) {
return
}
mut files := os.ls(path) or { return }
for file in files {
p := normalise_path(os.join_path_single(path, file))
if os.is_dir(p) && !os.is_link(p) {
collect(p, mut l, f)
} else if os.exists(p) {
f(p, mut l)
}
}
return
}
fn collect_tags(line string) []string {
mut cleaned := line.all_before('/')
cleaned = cleaned.replace_each(['[', '', ']', '', ' ', ''])
return cleaned.split(',')
}
fn main() {
if os.args.len == 1 {
println('Usage: $tool_name PATH \n$tool_description\n$tool_name -h for more help...')
exit(1)
}
mut fp := flag.new_flag_parser(os.args[1..])
fp.application(tool_name)
fp.version(tool_version)
fp.description(tool_description)
fp.arguments_description('PATH [PATH]...')
// Collect tool options
opt := Options{
show_help: fp.bool('help', `h`, false, 'Show this help text.')
deprecated: fp.bool('deprecated', `d`, false, 'Include deprecated functions in output.')
private: fp.bool('private', `p`, false, 'Include private functions in output.')
js: fp.bool('js', 0, false, 'Include JavaScript functions in output.')
no_line_numbers: fp.bool('no-line-numbers', `n`, false, 'Exclude line numbers in output.')
collect_tags: fp.bool('tags', `t`, false, 'Also print function tags if any is found.')
exclude: fp.string_multi('exclude', `e`, '')
relative_paths: fp.bool('relative-paths', `r`, false, 'Use relative paths in output.')
verify: fp.bool('verify', 0, false, 'exit(1) if documentation is missing, 0 otherwise.')
}
if opt.show_help {
println(fp.usage())
exit(0)
}
mut total := 0
for path in os.args[1..] {
if os.is_file(path) {
total += opt.report_undocumented_functions_in_file(path)
} else {
total += opt.report_undocumented_functions_in_path(path)
}
}
if opt.verify && total > 0 {
exit(1)
}
}