dockerfile-ast/lib/comment.js

Parse a Dockerfile into an array of instructions and comments.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Comment = void 0;
const vscode_languageserver_types_1 = require("vscode-languageserver-types");
const line_1 = require("./line");
const util_1 = require("./util");
class Comment extends line_1.Line {
    constructor(document, range) {
        super(document, range);
    }
    toString() {
        const content = this.getContent();
        if (content) {
            return "# " + content;
        }
        return "#";
    }
    /**
     * Returns the content of this comment. This excludes leading and
     * trailing whitespace as well as the # symbol. If the comment only
     * consists of whitespace, the empty string will be returned.
     */
    getContent() {
        let range = this.getContentRange();
        if (range === null) {
            return "";
        }
        return this.document.getText().substring(this.document.offsetAt(range.start), this.document.offsetAt(range.end));
    }
    /**
     * Returns a range that includes the content of the comment
     * excluding any leading and trailing whitespace as well as the #
     * symbol. May return null if the comment only consists of whitespace
     * characters.
     */
    getContentRange() {
        let range = this.getRange();
        const startOffset = this.document.offsetAt(range.start);
        let raw = this.document.getText().substring(startOffset, this.document.offsetAt(range.end));
        let start = -1;
        let end = -1;
        // skip the first # symbol
        for (let i = 1; i < raw.length; i++) {
            if (!util_1.Util.isWhitespace(raw.charAt(i))) {
                start = i;
                break;
            }
        }
        if (start === -1) {
            return null;
        }
        // go backwards up to the first # symbol
        for (let i = raw.length - 1; i >= 1; i--) {
            if (!util_1.Util.isWhitespace(raw.charAt(i))) {
                end = i + 1;
                break;
            }
        }
        return vscode_languageserver_types_1.Range.create(this.document.positionAt(startOffset + start), this.document.positionAt(startOffset + end));
    }
}
exports.Comment = Comment;