Method indexToPosition

src/document.js:632–641

* Converts an index position in a document to a `{row, column}` object. * * Index refers to the "absolute position" of a character in the document. For example: * * ```javascript * var x = 0; // 10 characters, plus one for newline * var y = -1; * ``` * *

(index, startRow)

     * @returns {Point} A `{row, column}` object of the `index` position
     */
    indexToPosition(index, startRow) {
        var lines = this.$lines || this.getAllLines();
        var newlineLength = this.getNewLineCharacter().length;
        for (var i = startRow || 0, l = lines.length; i < l; i++) {
            index -= lines[i].length + newlineLength;
            if (index < 0)
                return {row: i, column: index + lines[i].length + newlineLength};
        }
        return {row: l-1, column: index + lines[l-1].length + newlineLength};
    }

    /**
     * Converts the `{row, column}` position in a document to the character's index.