Method positionToIndex

src/document.js:659–668

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

(pos, startRow)

     * @returns {Number} The index position in the document
     */
    positionToIndex(pos, startRow) {
        var lines = this.$lines || this.getAllLines();
        var newlineLength = this.getNewLineCharacter().length;
        var index = 0;
        var row = Math.min(pos.row, lines.length);
        for (var i = startRow || 0; i < row; ++i)
            index += lines[i].length + newlineLength;

        return index + pos.column;
    }

    /**
     * Splits a string of text on any newline (`\n`) or carriage-return (`\r`) characters.