118 lines
4.2 KiB
JavaScript
118 lines
4.2 KiB
JavaScript
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'use strict';
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var Mixin = require('../../utils/mixin'),
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Tokenizer = require('../../tokenizer'),
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PositionTrackingPreprocessorMixin = require('../position_tracking/preprocessor_mixin'),
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inherits = require('util').inherits;
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var LocationInfoTokenizerMixin = module.exports = function (tokenizer) {
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Mixin.call(this, tokenizer);
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this.tokenizer = tokenizer;
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this.posTracker = new PositionTrackingPreprocessorMixin(tokenizer.preprocessor);
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this.currentAttrLocation = null;
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this.currentTokenLocation = null;
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};
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inherits(LocationInfoTokenizerMixin, Mixin);
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LocationInfoTokenizerMixin.prototype._getCurrentLocation = function () {
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return {
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line: this.posTracker.line,
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col: this.posTracker.col,
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startOffset: this.posTracker.offset,
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endOffset: -1
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};
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};
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LocationInfoTokenizerMixin.prototype._attachCurrentAttrLocationInfo = function () {
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this.currentAttrLocation.endOffset = this.posTracker.offset;
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var currentToken = this.tokenizer.currentToken,
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currentAttr = this.tokenizer.currentAttr;
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if (!currentToken.location.attrs)
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currentToken.location.attrs = Object.create(null);
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currentToken.location.attrs[currentAttr.name] = this.currentAttrLocation;
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};
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LocationInfoTokenizerMixin.prototype._getOverriddenMethods = function (mxn, orig) {
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var methods = {
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_createStartTagToken: function () {
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orig._createStartTagToken.call(this);
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this.currentToken.location = mxn.currentTokenLocation;
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},
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_createEndTagToken: function () {
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orig._createEndTagToken.call(this);
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this.currentToken.location = mxn.currentTokenLocation;
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},
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_createCommentToken: function () {
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orig._createCommentToken.call(this);
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this.currentToken.location = mxn.currentTokenLocation;
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},
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_createDoctypeToken: function (initialName) {
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orig._createDoctypeToken.call(this, initialName);
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this.currentToken.location = mxn.currentTokenLocation;
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},
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_createCharacterToken: function (type, ch) {
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orig._createCharacterToken.call(this, type, ch);
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this.currentCharacterToken.location = mxn.currentTokenLocation;
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},
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_createAttr: function (attrNameFirstCh) {
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orig._createAttr.call(this, attrNameFirstCh);
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mxn.currentAttrLocation = mxn._getCurrentLocation();
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},
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_leaveAttrName: function (toState) {
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orig._leaveAttrName.call(this, toState);
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mxn._attachCurrentAttrLocationInfo();
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},
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_leaveAttrValue: function (toState) {
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orig._leaveAttrValue.call(this, toState);
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mxn._attachCurrentAttrLocationInfo();
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},
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_emitCurrentToken: function () {
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//NOTE: if we have pending character token make it's end location equal to the
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//current token's start location.
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if (this.currentCharacterToken)
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this.currentCharacterToken.location.endOffset = this.currentToken.location.startOffset;
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this.currentToken.location.endOffset = mxn.posTracker.offset + 1;
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orig._emitCurrentToken.call(this);
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},
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_emitCurrentCharacterToken: function () {
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//NOTE: if we have character token and it's location wasn't set in the _emitCurrentToken(),
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//then set it's location at the current preprocessor position.
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//We don't need to increment preprocessor position, since character token
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//emission is always forced by the start of the next character token here.
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//So, we already have advanced position.
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if (this.currentCharacterToken && this.currentCharacterToken.location.endOffset === -1)
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this.currentCharacterToken.location.endOffset = mxn.posTracker.offset;
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orig._emitCurrentCharacterToken.call(this);
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}
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};
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//NOTE: patch initial states for each mode to obtain token start position
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Object.keys(Tokenizer.MODE).forEach(function (modeName) {
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var state = Tokenizer.MODE[modeName];
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methods[state] = function (cp) {
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mxn.currentTokenLocation = mxn._getCurrentLocation();
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orig[state].call(this, cp);
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};
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});
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return methods;
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};
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