1 files changed, 141 insertions, 0 deletions
diff --git a/v_windows/v/cmd/tools/missdoc.v b/v_windows/v/cmd/tools/missdoc.v
new file mode 100644
index 0000000..188fca1
--- /dev/null
+++ b/v_windows/v/cmd/tools/missdoc.v
@@ -0,0 +1,141 @@
+// 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        = os.file_name(os.executable())
+	tool_version     = '0.0.2'
+	tool_description = 'Prints all V functions in .v files under PATH/, that do not yet have documentation comments.'
+)
+
+struct UndocumentedFN {
+	line      int
+	signature string
+	tags      []string
+}
+
+struct Options {
+	show_help    bool
+	collect_tags bool
+	deprecated   bool
+}
+
+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 := path + os.path_separator + 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 report_undocumented_functions_in_path(opt Options, path string) {
+	mut files := []string{}
+	collect_fn := fn (path string, mut l []string) {
+		if os.file_ext(path) == '.v' {
+			l << os.real_path(path)
+		}
+	}
+	collect(path, mut files, collect_fn)
+	for file in files {
+		if file.ends_with('_test.v') {
+			continue
+		}
+		report_undocumented_functions_in_file(opt, file)
+	}
+}
+
+fn report_undocumented_functions_in_file(opt Options, file string) {
+	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') || (line.starts_with('fn ') && !(line.starts_with('fn C.')
+			|| line.starts_with('fn main'))) {
+			// println('Match: $line')
+			if i > 0 && lines.len > 0 {
+				mut line_above := lines[i - 1]
+				if !line_above.starts_with('//') {
+					mut tags := []string{}
+					mut grab := true
+					for j := i - 1; j >= 0; j-- {
+						prev_line := lines[j]
+						if prev_line.contains('}') { // We've looked back to the above scope, stop here
+							break
+						} else if prev_line.starts_with('[') {
+							tags << collect_tags(prev_line)
+							continue
+						} else if prev_line.starts_with('//') { // Single-line comment
+							grab = false
+							break
+						}
+					}
+					if grab {
+						clean_line := line.all_before_last(' {')
+						info << UndocumentedFN{i + 1, clean_line, tags}
+					}
+				}
+			}
+		}
+	}
+	if info.len > 0 {
+		for undocumented_fn in info {
+			tags_str := if opt.collect_tags && undocumented_fn.tags.len > 0 {
+				'$undocumented_fn.tags'
+			} else {
+				''
+			}
+			if opt.deprecated {
+				println('$file:$undocumented_fn.line:0:$undocumented_fn.signature $tags_str')
+			} else {
+				if 'deprecated' !in undocumented_fn.tags {
+					println('$file:$undocumented_fn.line:0:$undocumented_fn.signature $tags_str')
+				}
+			}
+		}
+	}
+}
+
+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.')
+		collect_tags: fp.bool('tags', `t`, false, 'Also print function tags if any is found.')
+	}
+	if opt.show_help {
+		println(fp.usage())
+		exit(0)
+	}
+	for path in os.args[1..] {
+		if os.is_file(path) {
+			report_undocumented_functions_in_file(opt, path)
+		} else {
+			report_undocumented_functions_in_path(opt, path)
+		}
+	}
+}