'use strict';
Object.defineProperty(exports, '__esModule', {
    value: true
});
var Tokenizer = require('./Tokenizer.js');
/*
    Options:

    xmlMode: Disables the special behavior for script/style tags (false by default)
    lowerCaseAttributeNames: call .toLowerCase for each attribute name (true if xmlMode is `false`)
    lowerCaseTags: call .toLowerCase for each tag name (true if xmlMode is `false`)
*/
/*
    Callbacks:

    oncdataend,
    oncdatastart,
    onclosetag,
    oncomment,
    oncommentend,
    onerror,
    onopentag,
    onprocessinginstruction,
    onreset,
    ontext
*/
var formTags = {
    input: true,
    option: true,
    optgroup: true,
    select: true,
    button: true,
    datalist: true,
    textarea: true
};
var openImpliesClose = {
    tr: {
        tr: true,
        th: true,
        td: true
    },
    th: {
        th: true
    },
    td: {
        thead: true,
        th: true,
        td: true
    },
    body: {
        head: true,
        link: true,
        script: true
    },
    li: {
        li: true
    },
    p: {
        p: true
    },
    h1: {
        p: true
    },
    h2: {
        p: true
    },
    h3: {
        p: true
    },
    h4: {
        p: true
    },
    h5: {
        p: true
    },
    h6: {
        p: true
    },
    select: formTags,
    input: formTags,
    output: formTags,
    button: formTags,
    datalist: formTags,
    textarea: formTags,
    option: {
        option: true
    },
    optgroup: {
        optgroup: true
    }
};
var voidElements = {
    __proto__: null,
    area: true,
    base: true,
    basefont: true,
    br: true,
    col: true,
    command: true,
    embed: true,
    frame: true,
    hr: true,
    img: true,
    input: true,
    isindex: true,
    keygen: true,
    link: true,
    meta: true,
    param: true,
    source: true,
    track: true,
    wbr: true
};
var foreignContextElements = {
    __proto__: null,
    math: true,
    svg: true
};
var htmlIntegrationElements = {
    __proto__: null,
    mi: true,
    mo: true,
    mn: true,
    ms: true,
    mtext: true,
    'annotation-xml': true,
    foreignObject: true,
    desc: true,
    title: true
};
var re_nameEnd = /\s|\//;
function Parser(cbs, options) {
    this._options = options || {};
    this._cbs = cbs || {};
    this._tagname = '';
    this._attribname = '';
    this._attribvalue = '';
    this._attribs = null;
    this._stack = [];
    this._foreignContext = [];
    this.startIndex = 0;
    this.endIndex = null;
    this._lowerCaseTagNames = 'lowerCaseTags' in this._options ? !!this._options.lowerCaseTags : !this._options.xmlMode;
    this._lowerCaseAttributeNames = 'lowerCaseAttributeNames' in this._options ? !!this._options.lowerCaseAttributeNames : !this._options.xmlMode;
    if (this._options.Tokenizer) {
        Tokenizer = this._options.Tokenizer;
    }
    this._tokenizer = new Tokenizer(this._options, this);
    if (this._cbs.onparserinit) {
        this._cbs.onparserinit(this);
    }
}
require('./inherits')(Parser, require('events').EventEmitter);
Parser.prototype._updatePosition = function (initialOffset) {
    if (this.endIndex === null) {
        if (this._tokenizer._sectionStart <= initialOffset) {
            this.startIndex = 0;
        } else {
            this.startIndex = this._tokenizer._sectionStart - initialOffset;
        }
    } else {
        this.startIndex = this.endIndex + 1;
    }
    this.endIndex = this._tokenizer.getAbsoluteIndex();
};
//Tokenizer event handlers
Parser.prototype.ontext = function (data) {
    this._updatePosition(1);
    this.endIndex--;
    if (this._cbs.ontext) {
        this._cbs.ontext(data);
    }
};
Parser.prototype.onopentagname = function (name) {
    if (this._lowerCaseTagNames) {
        name = name.toLowerCase();
    }
    this._tagname = name;
    if (!this._options.xmlMode && name in openImpliesClose) {
        for (var el; (el = this._stack[this._stack.length - 1]) in openImpliesClose[name]; this.onclosetag(el)) {}
    }
    if (this._options.xmlMode || !(name in voidElements)) {
        this._stack.push(name);
        if (name in foreignContextElements) this._foreignContext.push(true);
        else if (name in htmlIntegrationElements) {
            this._foreignContext.push(false);
        }
    }
    if (this._cbs.onopentagname) {
        this._cbs.onopentagname(name);
    }
    if (this._cbs.onopentag) {
        this._attribs = {};
    }
};
Parser.prototype.onopentagend = function () {
    this._updatePosition(1);
    if (this._attribs) {
        if (this._cbs.onopentag) {
            this._cbs.onopentag(this._tagname, this._attribs);
        }
        this._attribs = null;
    }
    if (!this._options.xmlMode && this._cbs.onclosetag && this._tagname in voidElements) {
        this._cbs.onclosetag(this._tagname);
    }
    this._tagname = '';
};
Parser.prototype.onclosetag = function (name) {
    this._updatePosition(1);
    if (this._lowerCaseTagNames) {
        name = name.toLowerCase();
    }
    if (name in foreignContextElements || name in htmlIntegrationElements) {
        this._foreignContext.pop();
    }
    if (this._stack.length && (!(name in voidElements) || this._options.xmlMode)) {
        var pos = this._stack.lastIndexOf(name);
        if (pos !== -1) {
            if (this._cbs.onclosetag) {
                pos = this._stack.length - pos;
                while (pos--) {
                    this._cbs.onclosetag(this._stack.pop());
                }
            } else {
                this._stack.length = pos;
            }
        } else if (name === 'p' && !this._options.xmlMode) {
            this.onopentagname(name);
            this._closeCurrentTag();
        }
    } else if (!this._options.xmlMode && (name === 'br' || name === 'p')) {
        this.onopentagname(name);
        this._closeCurrentTag();
    }
};
Parser.prototype.onselfclosingtag = function () {
    if (this._options.xmlMode || this._options.recognizeSelfClosing || this._foreignContext[this._foreignContext.length - 1]) {
        this._closeCurrentTag();
    } else {
        this.onopentagend();
    }
};
Parser.prototype._closeCurrentTag = function () {
    var name = this._tagname;
    this.onopentagend();
    //self-closing tags will be on the top of the stack
    //(cheaper check than in onclosetag)
    if (this._stack[this._stack.length - 1] === name) {
        if (this._cbs.onclosetag) {
            this._cbs.onclosetag(name);
        }
        this._stack.pop();
    }
};
Parser.prototype.onattribname = function (name) {
    if (this._lowerCaseAttributeNames) {
        name = name.toLowerCase();
    }
    this._attribname = name;
};
Parser.prototype.onattribdata = function (value) {
    this._attribvalue += value;
};
Parser.prototype.onattribend = function () {
    if (this._cbs.onattribute) {
        this._cbs.onattribute(this._attribname, this._attribvalue);
    }
    if (this._attribs && !Object.prototype.hasOwnProperty.call(this._attribs, this._attribname)) {
        this._attribs[this._attribname] = this._attribvalue;
    }
    this._attribname = '';
    this._attribvalue = '';
};
Parser.prototype._getInstructionName = function (value) {
    var idx = value.search(re_nameEnd);
    var name = idx < 0 ? value : value.substr(0, idx);
    if (this._lowerCaseTagNames) {
        name = name.toLowerCase();
    }
    return name;
};
Parser.prototype.ondeclaration = function (value) {
    if (this._cbs.onprocessinginstruction) {
        var name = this._getInstructionName(value);
        this._cbs.onprocessinginstruction('!' + name, '!' + value);
    }
};
Parser.prototype.onprocessinginstruction = function (value) {
    if (this._cbs.onprocessinginstruction) {
        var name = this._getInstructionName(value);
        this._cbs.onprocessinginstruction('?' + name, '?' + value);
    }
};
Parser.prototype.oncomment = function (value) {
    this._updatePosition(4);
    if (this._cbs.oncomment) {
        this._cbs.oncomment(value);
    }
    if (this._cbs.oncommentend) {
        this._cbs.oncommentend();
    }
};
Parser.prototype.oncdata = function (value) {
    this._updatePosition(1);
    if (this._options.xmlMode || this._options.recognizeCDATA) {
        if (this._cbs.oncdatastart) {
            this._cbs.oncdatastart();
        }
        if (this._cbs.ontext) {
            this._cbs.ontext(value);
        }
        if (this._cbs.oncdataend) {
            this._cbs.oncdataend();
        }
    } else {
        this.oncomment('[CDATA[' + value + ']]');
    }
};
Parser.prototype.onerror = function (err) {
    if (this._cbs.onerror) {
        this._cbs.onerror(err);
    }
};
Parser.prototype.onend = function () {
    if (this._cbs.onclosetag) {
        for (var i = this._stack.length; i > 0; this._cbs.onclosetag(this._stack[--i])) {}
    }
    if (this._cbs.onend) {
        this._cbs.onend();
    }
};
//Resets the parser to a blank state, ready to parse a new HTML document
Parser.prototype.reset = function () {
    if (this._cbs.onreset) {
        this._cbs.onreset();
    }
    this._tokenizer.reset();
    this._tagname = '';
    this._attribname = '';
    this._attribs = null;
    this._stack = [];
    if (this._cbs.onparserinit) {
        this._cbs.onparserinit(this);
    }
};
//Parses a complete HTML document and pushes it to the handler
Parser.prototype.parseComplete = function (data) {
    this.reset();
    this.end(data);
};
Parser.prototype.write = function (chunk) {
    this._tokenizer.write(chunk);
};
Parser.prototype.end = function (chunk) {
    this._tokenizer.end(chunk);
};
Parser.prototype.pause = function () {
    this._tokenizer.pause();
};
Parser.prototype.resume = function () {
    this._tokenizer.resume();
};
//alias for backwards compat
Parser.prototype.parseChunk = Parser.prototype.write;
Parser.prototype.done = Parser.prototype.end;
exports['default'] = Parser;
module.exports = exports['default'];