check_enums_have_sentence_comments.go

// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
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// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// THE SOFTWARE.

package lint

import (
	"github.com/Berrserker/prototool/internal/text"
	"github.com/emicklei/proto"
)

var enumsHaveSentenceCommentsLinter = NewLinter(
	"ENUMS_HAVE_SENTENCE_COMMENTS",
	`Verifies that all enums have a comment that contains at least one complete sentence.`,
	checkEnumsHaveSentenceComments,
)

func checkEnumsHaveSentenceComments(add func(*text.Failure), dirPath string, descriptors []*FileDescriptor) error {
	return runVisitor(enumsHaveSentenceCommentsVisitor{baseAddVisitor: newBaseAddVisitor(add)}, descriptors)
}

type enumsHaveSentenceCommentsVisitor struct {
	baseAddVisitor
}

func (v enumsHaveSentenceCommentsVisitor) VisitMessage(message *proto.Message) {
	// for nested enums
	for _, child := range message.Elements {
		child.Accept(v)
	}
}

func (v enumsHaveSentenceCommentsVisitor) VisitEnum(enum *proto.Enum) {
	if !hasCompleteSentenceComment(enum.Comment) {
		v.AddFailuref(enum.Position, `Enum %q needs a comment with a complete sentence that starts on the first line of the comment.`, enum.Name)
	}
}