javac解析java源文件中注释

野性酷女 2024-02-18 17:44 35阅读 0赞

jason/com/sun/tools/javac/parser/JavaTokenizer.java:605

case '/':
        reader.scanChar();
        if (reader.ch == '/') {
            do {
                reader.scanCommentChar();
            } while (reader.ch != CR && reader.ch != LF && reader.bp < reader.buflen);
            if (reader.bp < reader.buflen) {
                comments = addComment(comments, processComment(pos, reader.bp, CommentStyle.LINE));
            }
            break;
        } else if (reader.ch == '*') {
            boolean isEmpty = false;
            reader.scanChar();
            CommentStyle style;
            if (reader.ch == '*') {
                style = CommentStyle.JAVADOC;
                reader.scanCommentChar();
                if (reader.ch == '/') {
                    isEmpty = true;
                }
            } else {
                style = CommentStyle.BLOCK;
            }
            while (!isEmpty && reader.bp < reader.buflen) {
                if (reader.ch == '*') {
                    reader.scanChar();
                    if (reader.ch == '/') break;
                } else {
                    reader.scanCommentChar();
                }
            }
            if (reader.ch == '/') {
                reader.scanChar();
                comments = addComment(comments, processComment(pos, reader.bp, style));
                break;
            } else {
                lexError(pos, "unclosed.comment");
                break loop;
            }
        } else if (reader.ch == '=') {
            tk = TokenKind.SLASHEQ;
            reader.scanChar();
        } else {
            tk = TokenKind.SLASH;
        }
        break loop;