dynatrace-cordova-outsystems-plugin/node_modules/parse5/lib/extensions/location-info/tokenizer-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');
const Tokenizer = require('../../tokenizer');
const PositionTrackingPreprocessorMixin = require('../position-tracking/preprocessor-mixin');

class LocationInfoTokenizerMixin extends Mixin {
    constructor(tokenizer) {
        super(tokenizer);

        this.tokenizer = tokenizer;
        this.posTracker = Mixin.install(tokenizer.preprocessor, PositionTrackingPreprocessorMixin);
        this.currentAttrLocation = null;
        this.ctLoc = null;
    }

    _getCurrentLocation() {
        return {
            startLine: this.posTracker.line,
            startCol: this.posTracker.col,
            startOffset: this.posTracker.offset,
            endLine: -1,
            endCol: -1,
            endOffset: -1
        };
    }

    _attachCurrentAttrLocationInfo() {
        this.currentAttrLocation.endLine = this.posTracker.line;
        this.currentAttrLocation.endCol = this.posTracker.col;
        this.currentAttrLocation.endOffset = this.posTracker.offset;

        const currentToken = this.tokenizer.currentToken;
        const currentAttr = this.tokenizer.currentAttr;

        if (!currentToken.location.attrs) {
            currentToken.location.attrs = Object.create(null);
        }

        currentToken.location.attrs[currentAttr.name] = this.currentAttrLocation;
    }

    _getOverriddenMethods(mxn, orig) {
        const methods = {
            _createStartTagToken() {
                orig._createStartTagToken.call(this);
                this.currentToken.location = mxn.ctLoc;
            },

            _createEndTagToken() {
                orig._createEndTagToken.call(this);
                this.currentToken.location = mxn.ctLoc;
            },

            _createCommentToken() {
                orig._createCommentToken.call(this);
                this.currentToken.location = mxn.ctLoc;
            },

            _createDoctypeToken(initialName) {
                orig._createDoctypeToken.call(this, initialName);
                this.currentToken.location = mxn.ctLoc;
            },

            _createCharacterToken(type, ch) {
                orig._createCharacterToken.call(this, type, ch);
                this.currentCharacterToken.location = mxn.ctLoc;
            },

            _createEOFToken() {
                orig._createEOFToken.call(this);
                this.currentToken.location = mxn._getCurrentLocation();
            },

            _createAttr(attrNameFirstCh) {
                orig._createAttr.call(this, attrNameFirstCh);
                mxn.currentAttrLocation = mxn._getCurrentLocation();
            },

            _leaveAttrName(toState) {
                orig._leaveAttrName.call(this, toState);
                mxn._attachCurrentAttrLocationInfo();
            },

            _leaveAttrValue(toState) {
                orig._leaveAttrValue.call(this, toState);
                mxn._attachCurrentAttrLocationInfo();
            },

            _emitCurrentToken() {
                const ctLoc = this.currentToken.location;

                //NOTE: if we have pending character token make it's end location equal to the
                //current token's start location.
                if (this.currentCharacterToken) {
                    this.currentCharacterToken.location.endLine = ctLoc.startLine;
                    this.currentCharacterToken.location.endCol = ctLoc.startCol;
                    this.currentCharacterToken.location.endOffset = ctLoc.startOffset;
                }

                if (this.currentToken.type === Tokenizer.EOF_TOKEN) {
                    ctLoc.endLine = ctLoc.startLine;
                    ctLoc.endCol = ctLoc.startCol;
                    ctLoc.endOffset = ctLoc.startOffset;
                } else {
                    ctLoc.endLine = mxn.posTracker.line;
                    ctLoc.endCol = mxn.posTracker.col + 1;
                    ctLoc.endOffset = mxn.posTracker.offset + 1;
                }

                orig._emitCurrentToken.call(this);
            },

            _emitCurrentCharacterToken() {
                const ctLoc = this.currentCharacterToken && this.currentCharacterToken.location;

                //NOTE: if we have character token and it's location wasn't set in the _emitCurrentToken(),
                //then set it's location at the current preprocessor position.
                //We don't need to increment preprocessor position, since character token
                //emission is always forced by the start of the next character token here.
                //So, we already have advanced position.
                if (ctLoc && ctLoc.endOffset === -1) {
                    ctLoc.endLine = mxn.posTracker.line;
                    ctLoc.endCol = mxn.posTracker.col;
                    ctLoc.endOffset = mxn.posTracker.offset;
                }

                orig._emitCurrentCharacterToken.call(this);
            }
        };

        //NOTE: patch initial states for each mode to obtain token start position
        Object.keys(Tokenizer.MODE).forEach(modeName => {
            const state = Tokenizer.MODE[modeName];

            methods[state] = function(cp) {
                mxn.ctLoc = mxn._getCurrentLocation();
                orig[state].call(this, cp);
            };
        });

        return methods;
    }
}

module.exports = LocationInfoTokenizerMixin;