dynatrace-cordova-outsystems-plugin/node_modules/parse5/lib/extensions/position-tracking/preprocessor-mixin.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

'use strict';

const Mixin = require('../../utils/mixin');

class PositionTrackingPreprocessorMixin extends Mixin {
    constructor(preprocessor) {
        super(preprocessor);

        this.preprocessor = preprocessor;
        this.isEol = false;
        this.lineStartPos = 0;
        this.droppedBufferSize = 0;

        this.offset = 0;
        this.col = 0;
        this.line = 1;
    }

    _getOverriddenMethods(mxn, orig) {
        return {
            advance() {
                const pos = this.pos + 1;
                const ch = this.html[pos];

                //NOTE: LF should be in the last column of the line
                if (mxn.isEol) {
                    mxn.isEol = false;
                    mxn.line++;
                    mxn.lineStartPos = pos;
                }

                if (ch === '\n' || (ch === '\r' && this.html[pos + 1] !== '\n')) {
                    mxn.isEol = true;
                }

                mxn.col = pos - mxn.lineStartPos + 1;
                mxn.offset = mxn.droppedBufferSize + pos;

                return orig.advance.call(this);
            },

            retreat() {
                orig.retreat.call(this);

                mxn.isEol = false;
                mxn.col = this.pos - mxn.lineStartPos + 1;
            },

            dropParsedChunk() {
                const prevPos = this.pos;

                orig.dropParsedChunk.call(this);

                const reduction = prevPos - this.pos;

                mxn.lineStartPos -= reduction;
                mxn.droppedBufferSize += reduction;
                mxn.offset = mxn.droppedBufferSize + this.pos;
            }
        };
    }
}

module.exports = PositionTrackingPreprocessorMixin;