lib/uglify.js in uglifier-3.1.6 vs lib/uglify.js in uglifier-3.1.7

@@ -123,12 +123,12 @@
     TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     SUCH DAMAGE.
 
  ***********************************************************************/
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is_identifier_start(code)||is_digit(code)||code==8204||code==8205||is_unicode_combining_mark(ch)||is_unicode_connector_punctuation(ch)||is_unicode_digit(code)}function is_identifier_string(str){return/^[a-z_$][a-z0-9_$]*$/i.test(str)}function parse_js_number(num){if(RE_HEX_NUMBER.test(num)){return parseInt(num.substr(2),16)}else if(RE_OCT_NUMBER.test(num)){return parseInt(num.substr(1),8)}else{var val=parseFloat(num);if(val==num)return val}}function JS_Parse_Error(message,filename,line,col,pos){this.message=message;this.filename=filename;this.line=line;this.col=col;this.pos=pos}JS_Parse_Error.prototype=Object.create(Error.prototype);JS_Parse_Error.prototype.constructor=JS_Parse_Error;JS_Parse_Error.prototype.name="SyntaxError";configure_error_stack(JS_Parse_Error);function js_error(message,filename,line,col,pos){throw new JS_Parse_Error(message,filename,line,col,pos)}function is_token(token,type,val){return token.type==type&&(val==null||token.value==val)}var EX_EOF={};function tokenizer($TEXT,filename,html5_comments,shebang){var S={text:$TEXT,filename:filename,pos:0,tokpos:0,line:1,tokline:0,col:0,tokcol:0,newline_before:false,regex_allowed:false,comments_before:[],directives:{},directive_stack:[]};function peek(){return S.text.charAt(S.pos)}function next(signal_eof,in_string){var ch=S.text.charAt(S.pos++);if(signal_eof&&!ch)throw EX_EOF;if(NEWLINE_CHARS(ch)){S.newline_before=S.newline_before||!in_string;++S.line;S.col=0;if(!in_string&&ch=="\r"&&peek()=="\n"){++S.pos;ch="\n"}}else{++S.col}return ch}function forward(i){while(i-- >0)next()}function looking_at(str){return S.text.substr(S.pos,str.length)==str}function find_eol(){var text=S.text;for(var i=S.pos,n=S.text.length;i<n;++i){var ch=text[i];if(NEWLINE_CHARS(ch))return i}return-1}function find(what,signal_eof){var pos=S.text.indexOf(what,S.pos);if(signal_eof&&pos==-1)throw EX_EOF;return pos}function start_token(){S.tokline=S.line;S.tokcol=S.col;S.tokpos=S.pos}var prev_was_dot=false;function token(type,value,is_comment){S.regex_allowed=type=="operator"&&!UNARY_POSTFIX(value)||type=="keyword"&&KEYWORDS_BEFORE_EXPRESSION(value)||type=="punc"&&PUNC_BEFORE_EXPRESSION(value);prev_was_dot=type=="punc"&&value==".";var ret={type:type,value:value,line:S.tokline,col:S.tokcol,pos:S.tokpos,endline:S.line,endcol:S.col,endpos:S.pos,nlb:S.newline_before,file:filename};if(/^(?:num|string|regexp)$/i.test(type)){ret.raw=$TEXT.substring(ret.pos,ret.endpos)}if(!is_comment){ret.comments_before=S.comments_before;S.comments_before=[];for(var i=0,len=ret.comments_before.length;i<len;i++){ret.nlb=ret.nlb||ret.comments_before[i].nlb}}S.newline_before=false;return new AST_Token(ret)}function skip_whitespace(){while(WHITESPACE_CHARS(peek()))next()}function read_while(pred){var ret="",ch,i=0;while((ch=peek())&&pred(ch,i++))ret+=next();return ret}function parse_error(err){js_error(err,filename,S.tokline,S.tokcol,S.tokpos)}function read_num(prefix){var has_e=false,after_e=false,has_x=false,has_dot=prefix==".";var num=read_while(function(ch,i){var code=ch.charCodeAt(0);switch(code){case 120:case 88:return has_x?false:has_x=true;case 101:case 69:return has_x?true:has_e?false:has_e=after_e=true;case 45:return after_e||i==0&&!prefix;case 43:return after_e;case after_e=false,46:return!has_dot&&!has_x&&!has_e?has_dot=true:false}return is_alphanumeric_char(code)});if(prefix)num=prefix+num;if(RE_OCT_NUMBER.test(num)&&next_token.has_directive("use strict")){parse_error("Legacy octal literals are not allowed in strict mode")}var valid=parse_js_number(num);if(!isNaN(valid)){return token("num",valid)}else{parse_error("Invalid syntax: "+num)}}function read_escaped_char(in_string){var ch=next(true,in_string);switch(ch.charCodeAt(0)){case 110:return"\n";case 114:return"\r";case 116:return"\t";case 98:return"\b";case 118:return"\v";case 102:return"\f";case 120:return String.fromCharCode(hex_bytes(2));case 117:return String.fromCharCode(hex_bytes(4));case 10:return"";case 13:if(peek()=="\n"){next(true,in_string);return""}}if(ch>="0"&&ch<="7")return read_octal_escape_sequence(ch);return ch}function read_octal_escape_sequence(ch){var p=peek();if(p>="0"&&p<="7"){ch+=next(true);if(ch[0]<="3"&&(p=peek())>="0"&&p<="7")ch+=next(true)}if(ch==="0")return"\0";if(ch.length>0&&next_token.has_directive("use strict"))parse_error("Legacy octal escape sequences are not allowed in strict mode");return String.fromCharCode(parseInt(ch,8))}function hex_bytes(n){var num=0;for(;n>0;--n){var digit=parseInt(next(true),16);if(isNaN(digit))parse_error("Invalid hex-character pattern in string");num=num<<4|digit}return num}var read_string=with_eof_error("Unterminated string constant",function(quote_char){var quote=next(),ret="";for(;;){var ch=next(true,true);if(ch=="\\")ch=read_escaped_char(true);else if(NEWLINE_CHARS(ch))parse_error("Unterminated string constant");else if(ch==quote)break;ret+=ch}var tok=token("string",ret);tok.quote=quote_char;return tok});function skip_line_comment(type){var regex_allowed=S.regex_allowed;var i=find_eol(),ret;if(i==-1){ret=S.text.substr(S.pos);S.pos=S.text.length}else{ret=S.text.substring(S.pos,i);S.pos=i}S.col=S.tokcol+(S.pos-S.tokpos);S.comments_before.push(token(type,ret,true));S.regex_allowed=regex_allowed;return next_token}var skip_multiline_comment=with_eof_error("Unterminated multiline comment",function(){var regex_allowed=S.regex_allowed;var i=find("*/",true);var text=S.text.substring(S.pos,i).replace(/\r\n|\r|\u2028|\u2029/g,"\n");forward(text.length+2);S.comments_before.push(token("comment2",text,true));S.regex_allowed=regex_allowed;return next_token});function read_name(){var backslash=false,name="",ch,escaped=false,hex;while((ch=peek())!=null){if(!backslash){if(ch=="\\")escaped=backslash=true,next();else if(is_identifier_char(ch))name+=next();else break}else{if(ch!="u")parse_error("Expecting UnicodeEscapeSequence -- uXXXX");ch=read_escaped_char();if(!is_identifier_char(ch))parse_error("Unicode char: "+ch.charCodeAt(0)+" is not valid in identifier");name+=ch;backslash=false}}if(KEYWORDS(name)&&escaped){hex=name.charCodeAt(0).toString(16).toUpperCase();name="\\u"+"0000".substr(hex.length)+hex+name.slice(1)}return name}var read_regexp=with_eof_error("Unterminated regular expression",function(regexp){var prev_backslash=false,ch,in_class=false;while(ch=next(true))if(NEWLINE_CHARS(ch)){parse_error("Unexpected line terminator")}else if(prev_backslash){regexp+="\\"+ch;prev_backslash=false}else if(ch=="["){in_class=true;regexp+=ch}else if(ch=="]"&&in_class){in_class=false;regexp+=ch}else if(ch=="/"&&!in_class){break}else if(ch=="\\"){prev_backslash=true}else{regexp+=ch}var mods=read_name();try{return token("regexp",new RegExp(regexp,mods))}catch(e){parse_error(e.message)}});function read_operator(prefix){function grow(op){if(!peek())return op;var bigger=op+peek();if(OPERATORS(bigger)){next();return grow(bigger)}else{return op}}return token("operator",grow(prefix||next()))}function handle_slash(){next();switch(peek()){case"/":next();return skip_line_comment("comment1");case"*":next();return skip_multiline_comment()}return S.regex_allowed?read_regexp(""):read_operator("/")}function handle_dot(){next();return is_digit(peek().charCodeAt(0))?read_num("."):token("punc",".")}function read_word(){var word=read_name();if(prev_was_dot)return token("name",word);return KEYWORDS_ATOM(word)?token("atom",word):!KEYWORDS(word)?token("name",word):OPERATORS(word)?token("operator",word):token("keyword",word)}function with_eof_error(eof_error,cont){return function(x){try{return cont(x)}catch(ex){if(ex===EX_EOF)parse_error(eof_error);else throw ex}}}function next_token(force_regexp){if(force_regexp!=null)return read_regexp(force_regexp);if(shebang&&S.pos==0&&looking_at("#!")){start_token();forward(2);skip_line_comment("comment5")}for(;;){skip_whitespace();start_token();if(html5_comments){if(looking_at("<!--")){forward(4);skip_line_comment("comment3");continue}if(looking_at("-->")&&S.newline_before){forward(3);skip_line_comment("comment4");continue}}var ch=peek();if(!ch)return token("eof");var code=ch.charCodeAt(0);switch(code){case 34:case 39:return read_string(ch);case 46:return handle_dot();case 47:{var tok=handle_slash();if(tok===next_token)continue;return tok}}if(is_digit(code))return read_num();if(PUNC_CHARS(ch))return token("punc",next());if(OPERATOR_CHARS(ch))return read_operator();if(code==92||is_identifier_start(code))return read_word();break}parse_error("Unexpected character '"+ch+"'")}next_token.context=function(nc){if(nc)S=nc;return S};next_token.add_directive=function(directive){S.directive_stack[S.directive_stack.length-1].push(directive);if(S.directives[directive]===undefined){S.directives[directive]=1}else{S.directives[directive]++}};next_token.push_directives_stack=function(){S.directive_stack.push([])};next_token.pop_directives_stack=function(){var directives=S.directive_stack[S.directive_stack.length-1];for(var i=0;i<directives.length;i++){S.directives[directives[i]]--}S.directive_stack.pop()};next_token.has_directive=function(directive){return S.directives[directive]!==undefined&&S.directives[directive]>0};return next_token}var UNARY_PREFIX=makePredicate(["typeof","void","delete","--","++","!","~","-","+"]);var UNARY_POSTFIX=makePredicate(["--","++"]);var ASSIGNMENT=makePredicate(["=","+=","-=","/=","*=","%=",">>=","<<=",">>>=","|=","^=","&="]);var PRECEDENCE=function(a,ret){for(var i=0;i<a.length;++i){var b=a[i];for(var j=0;j<b.length;++j){ret[b[j]]=i+1}}return ret}([["||"],["&&"],["|"],["^"],["&"],["==","===","!=","!=="],["<",">","<=",">=","in","instanceof"],[">>","<<",">>>"],["+","-"],["*","/","%"]],{});var STATEMENTS_WITH_LABELS=array_to_hash(["for","do","while","switch"]);var ATOMIC_START_TOKEN=array_to_hash(["atom","num","string","regexp","name"]);function parse($TEXT,options){options=defaults(options,{strict:false,filename:null,toplevel:null,expression:false,html5_comments:true,bare_returns:false,shebang:true});var S={input:typeof $TEXT=="string"?tokenizer($TEXT,options.filename,options.html5_comments,options.shebang):$TEXT,token:null,prev:null,peeked:null,in_function:0,in_directives:true,in_loop:0,labels:[]};S.token=next();function is(type,value){return is_token(S.token,type,value)}function peek(){return S.peeked||(S.peeked=S.input())}function next(){S.prev=S.token;if(S.peeked){S.token=S.peeked;S.peeked=null}else{S.token=S.input()}S.in_directives=S.in_directives&&(S.token.type=="string"||is("punc",";"));return S.token}function prev(){return S.prev}function croak(msg,line,col,pos){var ctx=S.input.context();js_error(msg,ctx.filename,line!=null?line:ctx.tokline,col!=null?col:ctx.tokcol,pos!=null?pos:ctx.tokpos)}function token_error(token,msg){croak(msg,token.line,token.col)}function unexpected(token){if(token==null)token=S.token;token_error(token,"Unexpected token: "+token.type+" ("+token.value+")")}function expect_token(type,val){if(is(type,val)){return next()}token_error(S.token,"Unexpected token "+S.token.type+" «"+S.token.value+"»"+", expected "+type+" «"+val+"»")}function expect(punc){return expect_token("punc",punc)}function can_insert_semicolon(){return!options.strict&&(S.token.nlb||is("eof")||is("punc","}"))}function semicolon(optional){if(is("punc",";"))next();else if(!optional&&!can_insert_semicolon())unexpected()}function parenthesised(){expect("(");var exp=expression(true);expect(")");return exp}function embed_tokens(parser){return function(){var start=S.token;var expr=parser();if(!expr)croak("Expected expression");var end=prev();expr.start=start;expr.end=end;return expr}}function handle_regexp(){if(is("operator","/")||is("operator","/=")){S.peeked=null;S.token=S.input(S.token.value.substr(1))}}var statement=embed_tokens(function(){var tmp;handle_regexp();switch(S.token.type){case"string":var dir=false;if(S.in_directives===true){if((is_token(peek(),"punc",";")||peek().nlb)&&S.token.raw.indexOf("\\")===-1){S.input.add_directive(S.token.value)}else{S.in_directives=false}}var dir=S.in_directives,stat=simple_statement();if(dir){return new AST_Directive({start:stat.body.start,end:stat.body.end,quote:stat.body.quote,value:stat.body.value})}return stat;case"num":case"regexp":case"operator":case"atom":return simple_statement();case"name":return is_token(peek(),"punc",":")?labeled_statement():simple_statement();case"punc":switch(S.token.value){case"{":return new AST_BlockStatement({start:S.token,body:block_(),end:prev()});case"[":case"(":return simple_statement();case";":S.in_directives=false;next();return new AST_EmptyStatement;default:unexpected()}case"keyword":switch(tmp=S.token.value,next(),tmp){case"break":return break_cont(AST_Break);case"continue":return break_cont(AST_Continue);case"debugger":semicolon();return new AST_Debugger;case"do":return new AST_Do({body:in_loop(statement),condition:(expect_token("keyword","while"),tmp=parenthesised(),semicolon(true),tmp)});case"while":return new AST_While({condition:parenthesised(),body:in_loop(statement)});case"for":return for_();case"function":return function_(AST_Defun);case"if":return if_();case"return":if(S.in_function==0&&!options.bare_returns)croak("'return' outside of function");return new AST_Return({value:is("punc",";")?(next(),null):can_insert_semicolon()?null:(tmp=expression(true),semicolon(),tmp)});case"switch":return new AST_Switch({expression:parenthesised(),body:in_loop(switch_body_)});case"throw":if(S.token.nlb)croak("Illegal newline after 'throw'");return new AST_Throw({value:(tmp=expression(true),semicolon(),tmp)});case"try":return try_();case"var":return tmp=var_(),semicolon(),tmp;case"const":return tmp=const_(),semicolon(),tmp;case"with":if(S.input.has_directive("use strict")){croak("Strict mode may not include a with statement")}return new AST_With({expression:parenthesised(),body:statement()});default:unexpected()}}});function labeled_statement(){var label=as_symbol(AST_Label);if(find_if(function(l){return l.name==label.name},S.labels)){croak("Label "+label.name+" defined twice")}expect(":");S.labels.push(label);var stat=statement();S.labels.pop();if(!(stat instanceof AST_IterationStatement)){label.references.forEach(function(ref){if(ref instanceof AST_Continue){ref=ref.label.start;croak("Continue label `"+label.name+"` refers to non-IterationStatement.",ref.line,ref.col,ref.pos)}})}return new AST_LabeledStatement({body:stat,label:label})}function simple_statement(tmp){return new AST_SimpleStatement({body:(tmp=expression(true),semicolon(),tmp)})}function break_cont(type){var label=null,ldef;if(!can_insert_semicolon()){label=as_symbol(AST_LabelRef,true)}if(label!=null){ldef=find_if(function(l){return l.name==label.name},S.labels);if(!ldef)croak("Undefined label "+label.name);label.thedef=ldef}else if(S.in_loop==0)croak(type.TYPE+" not inside a loop or switch");semicolon();var stat=new type({label:label});if(ldef)ldef.references.push(stat);return stat}function for_(){expect("(");var init=null;if(!is("punc",";")){init=is("keyword","var")?(next(),var_(true)):expression(true,true);if(is("operator","in")){if(init instanceof AST_Var&&init.definitions.length>1)croak("Only one variable declaration allowed in for..in loop");next();return for_in(init)}}return regular_for(init)}function regular_for(init){expect(";");var test=is("punc",";")?null:expression(true);expect(";");var step=is("punc",")")?null:expression(true);expect(")");return new AST_For({init:init,condition:test,step:step,body:in_loop(statement)})}function for_in(init){var lhs=init instanceof AST_Var?init.definitions[0].name:null;var obj=expression(true);expect(")");return new AST_ForIn({init:init,name:lhs,object:obj,body:in_loop(statement)})}var function_=function(ctor){var in_statement=ctor===AST_Defun;var name=is("name")?as_symbol(in_statement?AST_SymbolDefun:AST_SymbolLambda):null;if(in_statement&&!name)unexpected();expect("(");return new ctor({name:name,argnames:function(first,a){while(!is("punc",")")){if(first)first=false;else expect(",");a.push(as_symbol(AST_SymbolFunarg))}next();return a}(true,[]),body:function(loop,labels){++S.in_function;S.in_directives=true;S.input.push_directives_stack();S.in_loop=0;S.labels=[];var a=block_();S.input.pop_directives_stack();--S.in_function;S.in_loop=loop;S.labels=labels;return a}(S.in_loop,S.labels)})};function if_(){var cond=parenthesised(),body=statement(),belse=null;if(is("keyword","else")){next();belse=statement()}return new AST_If({condition:cond,body:body,alternative:belse})}function block_(){expect("{");var a=[];while(!is("punc","}")){if(is("eof"))unexpected();a.push(statement())}next();return a}function switch_body_(){expect("{");var a=[],cur=null,branch=null,tmp;while(!is("punc","}")){if(is("eof"))unexpected();if(is("keyword","case")){if(branch)branch.end=prev();cur=[];branch=new AST_Case({start:(tmp=S.token,next(),tmp),expression:expression(true),body:cur});a.push(branch);expect(":")}else if(is("keyword","default")){if(branch)branch.end=prev();cur=[];branch=new AST_Default({start:(tmp=S.token,next(),expect(":"),tmp),body:cur});a.push(branch)}else{if(!cur)unexpected();cur.push(statement())}}if(branch)branch.end=prev();next();return a}function try_(){var body=block_(),bcatch=null,bfinally=null;if(is("keyword","catch")){var start=S.token;next();expect("(");var name=as_symbol(AST_SymbolCatch);expect(")");bcatch=new AST_Catch({start:start,argname:name,body:block_(),end:prev()})}if(is("keyword","finally")){var start=S.token;next();bfinally=new AST_Finally({start:start,body:block_(),end:prev()})}if(!bcatch&&!bfinally)croak("Missing catch/finally blocks");return new AST_Try({body:body,bcatch:bcatch,bfinally:bfinally})}function vardefs(no_in,in_const){var a=[];for(;;){a.push(new AST_VarDef({start:S.token,name:as_symbol(in_const?AST_SymbolConst:AST_SymbolVar),value:is("operator","=")?(next(),expression(false,no_in)):null,end:prev()}));if(!is("punc",","))break;next()}return a}var var_=function(no_in){return new AST_Var({start:prev(),definitions:vardefs(no_in,false),end:prev()})};var const_=function(){return new AST_Const({start:prev(),definitions:vardefs(false,true),end:prev()})};var new_=function(allow_calls){var start=S.token;expect_token("operator","new");var newexp=expr_atom(false),args;if(is("punc","(")){next();args=expr_list(")")}else{args=[]}return subscripts(new AST_New({start:start,expression:newexp,args:args,end:prev()}),allow_calls)};function as_atom_node(){var tok=S.token,ret;switch(tok.type){case"name":case"keyword":ret=_make_symbol(AST_SymbolRef);break;case"num":ret=new AST_Number({start:tok,end:tok,value:tok.value});break;case"string":ret=new AST_String({start:tok,end:tok,value:tok.value,quote:tok.quote});break;case"regexp":ret=new AST_RegExp({start:tok,end:tok,value:tok.value});break;case"atom":switch(tok.value){case"false":ret=new AST_False({start:tok,end:tok});break;case"true":ret=new AST_True({start:tok,end:tok});break;case"null":ret=new AST_Null({start:tok,end:tok});break}break;case"operator":if(!is_identifier_string(tok.value)){croak("Invalid getter/setter name: "+tok.value,tok.line,tok.col,tok.pos)}ret=_make_symbol(AST_SymbolRef);break}next();return ret}var expr_atom=function(allow_calls){if(is("operator","new")){return new_(allow_calls)}var start=S.token;if(is("punc")){switch(start.value){case"(":next();var ex=expression(true);ex.start=start;ex.end=S.token;expect(")");return subscripts(ex,allow_calls);case"[":return subscripts(array_(),allow_calls);case"{":return subscripts(object_(),allow_calls)}unexpected()}if(is("keyword","function")){next();var func=function_(AST_Function);func.start=start;func.end=prev();return subscripts(func,allow_calls)}if(ATOMIC_START_TOKEN[S.token.type]){return subscripts(as_atom_node(),allow_calls)}unexpected()};function expr_list(closing,allow_trailing_comma,allow_empty){var first=true,a=[];while(!is("punc",closing)){if(first)first=false;else expect(",");if(allow_trailing_comma&&is("punc",closing))break;if(is("punc",",")&&allow_empty){a.push(new AST_Hole({start:S.token,end:S.token}))}else{a.push(expression(false))}}next();return a}var array_=embed_tokens(function(){expect("[");return new AST_Array({elements:expr_list("]",!options.strict,true)})});var create_accessor=embed_tokens(function(){return function_(AST_Accessor)});var object_=embed_tokens(function(){expect("{");var first=true,a=[];while(!is("punc","}")){if(first)first=false;else expect(",");if(!options.strict&&is("punc","}"))break;var start=S.token;var type=start.type;var name=as_property_name();if(type=="name"&&!is("punc",":")){if(name=="get"){a.push(new AST_ObjectGetter({start:start,key:as_atom_node(),value:create_accessor(),end:prev()}));continue}if(name=="set"){a.push(new AST_ObjectSetter({start:start,key:as_atom_node(),value:create_accessor(),
-end:prev()}));continue}}expect(":");a.push(new AST_ObjectKeyVal({start:start,quote:start.quote,key:name,value:expression(false),end:prev()}))}next();return new AST_Object({properties:a})});function as_property_name(){var tmp=S.token;next();switch(tmp.type){case"num":case"string":case"name":case"operator":case"keyword":case"atom":return tmp.value;default:unexpected()}}function as_name(){var tmp=S.token;next();switch(tmp.type){case"name":case"operator":case"keyword":case"atom":return tmp.value;default:unexpected()}}function _make_symbol(type){var name=S.token.value;return new(name=="this"?AST_This:type)({name:String(name),start:S.token,end:S.token})}function as_symbol(type,noerror){if(!is("name")){if(!noerror)croak("Name expected");return null}var sym=_make_symbol(type);next();return sym}var subscripts=function(expr,allow_calls){var start=expr.start;if(is("punc",".")){next();return subscripts(new AST_Dot({start:start,expression:expr,property:as_name(),end:prev()}),allow_calls)}if(is("punc","[")){next();var prop=expression(true);expect("]");return subscripts(new AST_Sub({start:start,expression:expr,property:prop,end:prev()}),allow_calls)}if(allow_calls&&is("punc","(")){next();return subscripts(new AST_Call({start:start,expression:expr,args:expr_list(")"),end:prev()}),true)}return expr};var maybe_unary=function(allow_calls){var start=S.token;if(is("operator")&&UNARY_PREFIX(start.value)){next();handle_regexp();var ex=make_unary(AST_UnaryPrefix,start.value,maybe_unary(allow_calls));ex.start=start;ex.end=prev();return ex}var val=expr_atom(allow_calls);while(is("operator")&&UNARY_POSTFIX(S.token.value)&&!S.token.nlb){val=make_unary(AST_UnaryPostfix,S.token.value,val);val.start=start;val.end=S.token;next()}return val};function make_unary(ctor,op,expr){if((op=="++"||op=="--")&&!is_assignable(expr))croak("Invalid use of "+op+" operator");return new ctor({operator:op,expression:expr})}var expr_op=function(left,min_prec,no_in){var op=is("operator")?S.token.value:null;if(op=="in"&&no_in)op=null;var prec=op!=null?PRECEDENCE[op]:null;if(prec!=null&&prec>min_prec){next();var right=expr_op(maybe_unary(true),prec,no_in);return expr_op(new AST_Binary({start:left.start,left:left,operator:op,right:right,end:right.end}),min_prec,no_in)}return left};function expr_ops(no_in){return expr_op(maybe_unary(true),0,no_in)}var maybe_conditional=function(no_in){var start=S.token;var expr=expr_ops(no_in);if(is("operator","?")){next();var yes=expression(false);expect(":");return new AST_Conditional({start:start,condition:expr,consequent:yes,alternative:expression(false,no_in),end:prev()})}return expr};function is_assignable(expr){if(!options.strict)return true;if(expr instanceof AST_This)return false;return expr instanceof AST_PropAccess||expr instanceof AST_Symbol}var maybe_assign=function(no_in){var start=S.token;var left=maybe_conditional(no_in),val=S.token.value;if(is("operator")&&ASSIGNMENT(val)){if(is_assignable(left)){next();return new AST_Assign({start:start,left:left,operator:val,right:maybe_assign(no_in),end:prev()})}croak("Invalid assignment")}return left};var expression=function(commas,no_in){var start=S.token;var expr=maybe_assign(no_in);if(commas&&is("punc",",")){next();return new AST_Seq({start:start,car:expr,cdr:expression(true,no_in),end:peek()})}return expr};function in_loop(cont){++S.in_loop;var ret=cont();--S.in_loop;return ret}if(options.expression){return expression(true)}return function(){var start=S.token;var body=[];S.input.push_directives_stack();while(!is("eof"))body.push(statement());S.input.pop_directives_stack();var end=prev();var toplevel=options.toplevel;if(toplevel){toplevel.body=toplevel.body.concat(body);toplevel.end=end}else{toplevel=new AST_Toplevel({start:start,body:body,end:end})}return toplevel}()}/***********************************************************************
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tokenizer($TEXT,filename,html5_comments,shebang){var S={text:$TEXT,filename:filename,pos:0,tokpos:0,line:1,tokline:0,col:0,tokcol:0,newline_before:false,regex_allowed:false,comments_before:[],directives:{},directive_stack:[]};function peek(){return S.text.charAt(S.pos)}function next(signal_eof,in_string){var ch=S.text.charAt(S.pos++);if(signal_eof&&!ch)throw EX_EOF;if(NEWLINE_CHARS(ch)){S.newline_before=S.newline_before||!in_string;++S.line;S.col=0;if(!in_string&&ch=="\r"&&peek()=="\n"){++S.pos;ch="\n"}}else{++S.col}return ch}function forward(i){while(i-- >0)next()}function looking_at(str){return S.text.substr(S.pos,str.length)==str}function find_eol(){var text=S.text;for(var i=S.pos,n=S.text.length;i<n;++i){var ch=text[i];if(NEWLINE_CHARS(ch))return i}return-1}function find(what,signal_eof){var pos=S.text.indexOf(what,S.pos);if(signal_eof&&pos==-1)throw EX_EOF;return pos}function start_token(){S.tokline=S.line;S.tokcol=S.col;S.tokpos=S.pos}var prev_was_dot=false;function token(type,value,is_comment){S.regex_allowed=type=="operator"&&!UNARY_POSTFIX(value)||type=="keyword"&&KEYWORDS_BEFORE_EXPRESSION(value)||type=="punc"&&PUNC_BEFORE_EXPRESSION(value);prev_was_dot=type=="punc"&&value==".";var ret={type:type,value:value,line:S.tokline,col:S.tokcol,pos:S.tokpos,endline:S.line,endcol:S.col,endpos:S.pos,nlb:S.newline_before,file:filename};if(/^(?:num|string|regexp)$/i.test(type)){ret.raw=$TEXT.substring(ret.pos,ret.endpos)}if(!is_comment){ret.comments_before=S.comments_before;S.comments_before=[];for(var i=0,len=ret.comments_before.length;i<len;i++){ret.nlb=ret.nlb||ret.comments_before[i].nlb}}S.newline_before=false;return new AST_Token(ret)}function skip_whitespace(){while(WHITESPACE_CHARS(peek()))next()}function read_while(pred){var ret="",ch,i=0;while((ch=peek())&&pred(ch,i++))ret+=next();return ret}function parse_error(err){js_error(err,filename,S.tokline,S.tokcol,S.tokpos)}function read_num(prefix){var has_e=false,after_e=false,has_x=false,has_dot=prefix==".";var num=read_while(function(ch,i){var code=ch.charCodeAt(0);switch(code){case 120:case 88:return has_x?false:has_x=true;case 101:case 69:return has_x?true:has_e?false:has_e=after_e=true;case 45:return after_e||i==0&&!prefix;case 43:return after_e;case after_e=false,46:return!has_dot&&!has_x&&!has_e?has_dot=true:false}return is_alphanumeric_char(code)});if(prefix)num=prefix+num;if(RE_OCT_NUMBER.test(num)&&next_token.has_directive("use strict")){parse_error("Legacy octal literals are not allowed in strict mode")}var valid=parse_js_number(num);if(!isNaN(valid)){return token("num",valid)}else{parse_error("Invalid syntax: "+num)}}function read_escaped_char(in_string){var ch=next(true,in_string);switch(ch.charCodeAt(0)){case 110:return"\n";case 114:return"\r";case 116:return"\t";case 98:return"\b";case 118:return"\v";case 102:return"\f";case 120:return String.fromCharCode(hex_bytes(2));case 117:return String.fromCharCode(hex_bytes(4));case 10:return"";case 13:if(peek()=="\n"){next(true,in_string);return""}}if(ch>="0"&&ch<="7")return read_octal_escape_sequence(ch);return ch}function read_octal_escape_sequence(ch){var p=peek();if(p>="0"&&p<="7"){ch+=next(true);if(ch[0]<="3"&&(p=peek())>="0"&&p<="7")ch+=next(true)}if(ch==="0")return"\0";if(ch.length>0&&next_token.has_directive("use strict"))parse_error("Legacy octal escape sequences are not allowed in strict mode");return String.fromCharCode(parseInt(ch,8))}function hex_bytes(n){var num=0;for(;n>0;--n){var digit=parseInt(next(true),16);if(isNaN(digit))parse_error("Invalid hex-character pattern in string");num=num<<4|digit}return num}var read_string=with_eof_error("Unterminated string constant",function(quote_char){var quote=next(),ret="";for(;;){var ch=next(true,true);if(ch=="\\")ch=read_escaped_char(true);else if(NEWLINE_CHARS(ch))parse_error("Unterminated string constant");else if(ch==quote)break;ret+=ch}var tok=token("string",ret);tok.quote=quote_char;return tok});function skip_line_comment(type){var regex_allowed=S.regex_allowed;var i=find_eol(),ret;if(i==-1){ret=S.text.substr(S.pos);S.pos=S.text.length}else{ret=S.text.substring(S.pos,i);S.pos=i}S.col=S.tokcol+(S.pos-S.tokpos);S.comments_before.push(token(type,ret,true));S.regex_allowed=regex_allowed;return next_token}var skip_multiline_comment=with_eof_error("Unterminated multiline comment",function(){var regex_allowed=S.regex_allowed;var i=find("*/",true);var text=S.text.substring(S.pos,i).replace(/\r\n|\r|\u2028|\u2029/g,"\n");forward(text.length+2);S.comments_before.push(token("comment2",text,true));S.regex_allowed=regex_allowed;return next_token});function read_name(){var backslash=false,name="",ch,escaped=false,hex;while((ch=peek())!=null){if(!backslash){if(ch=="\\")escaped=backslash=true,next();else if(is_identifier_char(ch))name+=next();else break}else{if(ch!="u")parse_error("Expecting UnicodeEscapeSequence -- uXXXX");ch=read_escaped_char();if(!is_identifier_char(ch))parse_error("Unicode char: "+ch.charCodeAt(0)+" is not valid in identifier");name+=ch;backslash=false}}if(KEYWORDS(name)&&escaped){hex=name.charCodeAt(0).toString(16).toUpperCase();name="\\u"+"0000".substr(hex.length)+hex+name.slice(1)}return name}var read_regexp=with_eof_error("Unterminated regular expression",function(regexp){var prev_backslash=false,ch,in_class=false;while(ch=next(true))if(NEWLINE_CHARS(ch)){parse_error("Unexpected line terminator")}else if(prev_backslash){regexp+="\\"+ch;prev_backslash=false}else if(ch=="["){in_class=true;regexp+=ch}else if(ch=="]"&&in_class){in_class=false;regexp+=ch}else if(ch=="/"&&!in_class){break}else if(ch=="\\"){prev_backslash=true}else{regexp+=ch}var mods=read_name();try{return token("regexp",new RegExp(regexp,mods))}catch(e){parse_error(e.message)}});function read_operator(prefix){function grow(op){if(!peek())return op;var bigger=op+peek();if(OPERATORS(bigger)){next();return grow(bigger)}else{return op}}return token("operator",grow(prefix||next()))}function handle_slash(){next();switch(peek()){case"/":next();return skip_line_comment("comment1");case"*":next();return skip_multiline_comment()}return S.regex_allowed?read_regexp(""):read_operator("/")}function handle_dot(){next();return is_digit(peek().charCodeAt(0))?read_num("."):token("punc",".")}function read_word(){var word=read_name();if(prev_was_dot)return token("name",word);return KEYWORDS_ATOM(word)?token("atom",word):!KEYWORDS(word)?token("name",word):OPERATORS(word)?token("operator",word):token("keyword",word)}function with_eof_error(eof_error,cont){return function(x){try{return cont(x)}catch(ex){if(ex===EX_EOF)parse_error(eof_error);else throw ex}}}function next_token(force_regexp){if(force_regexp!=null)return read_regexp(force_regexp);if(shebang&&S.pos==0&&looking_at("#!")){start_token();forward(2);skip_line_comment("comment5")}for(;;){skip_whitespace();start_token();if(html5_comments){if(looking_at("<!--")){forward(4);skip_line_comment("comment3");continue}if(looking_at("-->")&&S.newline_before){forward(3);skip_line_comment("comment4");continue}}var ch=peek();if(!ch)return token("eof");var code=ch.charCodeAt(0);switch(code){case 34:case 39:return read_string(ch);case 46:return handle_dot();case 47:{var tok=handle_slash();if(tok===next_token)continue;return tok}}if(is_digit(code))return read_num();if(PUNC_CHARS(ch))return token("punc",next());if(OPERATOR_CHARS(ch))return read_operator();if(code==92||is_identifier_start(code))return read_word();break}parse_error("Unexpected character '"+ch+"'")}next_token.context=function(nc){if(nc)S=nc;return S};next_token.add_directive=function(directive){S.directive_stack[S.directive_stack.length-1].push(directive);if(S.directives[directive]===undefined){S.directives[directive]=1}else{S.directives[directive]++}};next_token.push_directives_stack=function(){S.directive_stack.push([])};next_token.pop_directives_stack=function(){var directives=S.directive_stack[S.directive_stack.length-1];for(var i=0;i<directives.length;i++){S.directives[directives[i]]--}S.directive_stack.pop()};next_token.has_directive=function(directive){return S.directives[directive]!==undefined&&S.directives[directive]>0};return next_token}var UNARY_PREFIX=makePredicate(["typeof","void","delete","--","++","!","~","-","+"]);var UNARY_POSTFIX=makePredicate(["--","++"]);var ASSIGNMENT=makePredicate(["=","+=","-=","/=","*=","%=",">>=","<<=",">>>=","|=","^=","&="]);var PRECEDENCE=function(a,ret){for(var i=0;i<a.length;++i){var b=a[i];for(var j=0;j<b.length;++j){ret[b[j]]=i+1}}return ret}([["||"],["&&"],["|"],["^"],["&"],["==","===","!=","!=="],["<",">","<=",">=","in","instanceof"],[">>","<<",">>>"],["+","-"],["*","/","%"]],{});var STATEMENTS_WITH_LABELS=array_to_hash(["for","do","while","switch"]);var ATOMIC_START_TOKEN=array_to_hash(["atom","num","string","regexp","name"]);function parse($TEXT,options){options=defaults(options,{strict:false,filename:null,toplevel:null,expression:false,html5_comments:true,bare_returns:false,shebang:true});var S={input:typeof $TEXT=="string"?tokenizer($TEXT,options.filename,options.html5_comments,options.shebang):$TEXT,token:null,prev:null,peeked:null,in_function:0,in_directives:true,in_loop:0,labels:[]};S.token=next();function is(type,value){return is_token(S.token,type,value)}function peek(){return S.peeked||(S.peeked=S.input())}function next(){S.prev=S.token;if(S.peeked){S.token=S.peeked;S.peeked=null}else{S.token=S.input()}S.in_directives=S.in_directives&&(S.token.type=="string"||is("punc",";"));return S.token}function prev(){return S.prev}function croak(msg,line,col,pos){var ctx=S.input.context();js_error(msg,ctx.filename,line!=null?line:ctx.tokline,col!=null?col:ctx.tokcol,pos!=null?pos:ctx.tokpos)}function token_error(token,msg){croak(msg,token.line,token.col)}function unexpected(token){if(token==null)token=S.token;token_error(token,"Unexpected token: "+token.type+" ("+token.value+")")}function expect_token(type,val){if(is(type,val)){return next()}token_error(S.token,"Unexpected token "+S.token.type+" «"+S.token.value+"»"+", expected "+type+" «"+val+"»")}function expect(punc){return expect_token("punc",punc)}function can_insert_semicolon(){return!options.strict&&(S.token.nlb||is("eof")||is("punc","}"))}function semicolon(optional){if(is("punc",";"))next();else if(!optional&&!can_insert_semicolon())unexpected()}function parenthesised(){expect("(");var exp=expression(true);expect(")");return exp}function embed_tokens(parser){return function(){var start=S.token;var expr=parser();var end=prev();expr.start=start;expr.end=end;return expr}}function handle_regexp(){if(is("operator","/")||is("operator","/=")){S.peeked=null;S.token=S.input(S.token.value.substr(1))}}var statement=embed_tokens(function(){var tmp;handle_regexp();switch(S.token.type){case"string":var dir=false;if(S.in_directives===true){if((is_token(peek(),"punc",";")||peek().nlb)&&S.token.raw.indexOf("\\")===-1){S.input.add_directive(S.token.value)}else{S.in_directives=false}}var dir=S.in_directives,stat=simple_statement();if(dir){return new AST_Directive({start:stat.body.start,end:stat.body.end,quote:stat.body.quote,value:stat.body.value})}return stat;case"num":case"regexp":case"operator":case"atom":return simple_statement();case"name":return is_token(peek(),"punc",":")?labeled_statement():simple_statement();case"punc":switch(S.token.value){case"{":return new AST_BlockStatement({start:S.token,body:block_(),end:prev()});case"[":case"(":return simple_statement();case";":S.in_directives=false;next();return new AST_EmptyStatement;default:unexpected()}case"keyword":switch(tmp=S.token.value,next(),tmp){case"break":return break_cont(AST_Break);case"continue":return break_cont(AST_Continue);case"debugger":semicolon();return new AST_Debugger;case"do":return new AST_Do({body:in_loop(statement),condition:(expect_token("keyword","while"),tmp=parenthesised(),semicolon(true),tmp)});case"while":return new AST_While({condition:parenthesised(),body:in_loop(statement)});case"for":return for_();case"function":return function_(AST_Defun);case"if":return if_();case"return":if(S.in_function==0&&!options.bare_returns)croak("'return' outside of function");return new AST_Return({value:is("punc",";")?(next(),null):can_insert_semicolon()?null:(tmp=expression(true),semicolon(),tmp)});case"switch":return new AST_Switch({expression:parenthesised(),body:in_loop(switch_body_)});case"throw":if(S.token.nlb)croak("Illegal newline after 'throw'");return new AST_Throw({value:(tmp=expression(true),semicolon(),tmp)});case"try":return try_();case"var":return tmp=var_(),semicolon(),tmp;case"const":return tmp=const_(),semicolon(),tmp;case"with":if(S.input.has_directive("use strict")){croak("Strict mode may not include a with statement")}return new AST_With({expression:parenthesised(),body:statement()})}}unexpected()});function labeled_statement(){var label=as_symbol(AST_Label);if(find_if(function(l){return l.name==label.name},S.labels)){croak("Label "+label.name+" defined twice")}expect(":");S.labels.push(label);var stat=statement();S.labels.pop();if(!(stat instanceof AST_IterationStatement)){label.references.forEach(function(ref){if(ref instanceof AST_Continue){ref=ref.label.start;croak("Continue label `"+label.name+"` refers to non-IterationStatement.",ref.line,ref.col,ref.pos)}})}return new AST_LabeledStatement({body:stat,label:label})}function simple_statement(tmp){return new AST_SimpleStatement({body:(tmp=expression(true),semicolon(),tmp)})}function break_cont(type){var label=null,ldef;if(!can_insert_semicolon()){label=as_symbol(AST_LabelRef,true)}if(label!=null){ldef=find_if(function(l){return l.name==label.name},S.labels);if(!ldef)croak("Undefined label "+label.name);label.thedef=ldef}else if(S.in_loop==0)croak(type.TYPE+" not inside a loop or switch");semicolon();var stat=new type({label:label});if(ldef)ldef.references.push(stat);return stat}function for_(){expect("(");var init=null;if(!is("punc",";")){init=is("keyword","var")?(next(),var_(true)):expression(true,true);if(is("operator","in")){if(init instanceof AST_Var&&init.definitions.length>1)croak("Only one variable declaration allowed in for..in loop");next();return for_in(init)}}return regular_for(init)}function regular_for(init){expect(";");var test=is("punc",";")?null:expression(true);expect(";");var step=is("punc",")")?null:expression(true);expect(")");return new AST_For({init:init,condition:test,step:step,body:in_loop(statement)})}function for_in(init){var lhs=init instanceof AST_Var?init.definitions[0].name:null;var obj=expression(true);expect(")");return new AST_ForIn({init:init,name:lhs,object:obj,body:in_loop(statement)})}var function_=function(ctor){var in_statement=ctor===AST_Defun;var name=is("name")?as_symbol(in_statement?AST_SymbolDefun:AST_SymbolLambda):null;if(in_statement&&!name)unexpected();expect("(");return new ctor({name:name,argnames:function(first,a){while(!is("punc",")")){if(first)first=false;else expect(",");a.push(as_symbol(AST_SymbolFunarg))}next();return a}(true,[]),body:function(loop,labels){++S.in_function;S.in_directives=true;S.input.push_directives_stack();S.in_loop=0;S.labels=[];var a=block_();S.input.pop_directives_stack();--S.in_function;S.in_loop=loop;S.labels=labels;return a}(S.in_loop,S.labels)})};function if_(){var cond=parenthesised(),body=statement(),belse=null;if(is("keyword","else")){next();belse=statement()}return new AST_If({condition:cond,body:body,alternative:belse})}function block_(){expect("{");var a=[];while(!is("punc","}")){if(is("eof"))unexpected();a.push(statement())}next();return a}function switch_body_(){expect("{");var a=[],cur=null,branch=null,tmp;while(!is("punc","}")){if(is("eof"))unexpected();if(is("keyword","case")){if(branch)branch.end=prev();cur=[];branch=new AST_Case({start:(tmp=S.token,next(),tmp),expression:expression(true),body:cur});a.push(branch);expect(":")}else if(is("keyword","default")){if(branch)branch.end=prev();cur=[];branch=new AST_Default({start:(tmp=S.token,next(),expect(":"),tmp),body:cur});a.push(branch)}else{if(!cur)unexpected();cur.push(statement())}}if(branch)branch.end=prev();next();return a}function try_(){var body=block_(),bcatch=null,bfinally=null;if(is("keyword","catch")){var start=S.token;next();expect("(");var name=as_symbol(AST_SymbolCatch);expect(")");bcatch=new AST_Catch({start:start,argname:name,body:block_(),end:prev()})}if(is("keyword","finally")){var start=S.token;next();bfinally=new AST_Finally({start:start,body:block_(),end:prev()})}if(!bcatch&&!bfinally)croak("Missing catch/finally blocks");return new AST_Try({body:body,bcatch:bcatch,bfinally:bfinally})}function vardefs(no_in,in_const){var a=[];for(;;){a.push(new AST_VarDef({start:S.token,name:as_symbol(in_const?AST_SymbolConst:AST_SymbolVar),value:is("operator","=")?(next(),expression(false,no_in)):null,end:prev()}));if(!is("punc",","))break;next()}return a}var var_=function(no_in){return new AST_Var({start:prev(),definitions:vardefs(no_in,false),end:prev()})};var const_=function(){return new AST_Const({start:prev(),definitions:vardefs(false,true),end:prev()})};var new_=function(allow_calls){var start=S.token;expect_token("operator","new");var newexp=expr_atom(false),args;if(is("punc","(")){next();args=expr_list(")")}else{args=[]}return subscripts(new AST_New({start:start,expression:newexp,args:args,end:prev()}),allow_calls)};function as_atom_node(){var tok=S.token,ret;switch(tok.type){case"name":case"keyword":ret=_make_symbol(AST_SymbolRef);break;case"num":ret=new AST_Number({start:tok,end:tok,value:tok.value});break;case"string":ret=new AST_String({start:tok,end:tok,value:tok.value,quote:tok.quote});break;case"regexp":ret=new AST_RegExp({start:tok,end:tok,value:tok.value});break;case"atom":switch(tok.value){case"false":ret=new AST_False({start:tok,end:tok});break;case"true":ret=new AST_True({start:tok,end:tok});break;case"null":ret=new AST_Null({start:tok,end:tok});break}break;case"operator":if(!is_identifier_string(tok.value)){croak("Invalid getter/setter name: "+tok.value,tok.line,tok.col,tok.pos)}ret=_make_symbol(AST_SymbolRef);break}next();return ret}var expr_atom=function(allow_calls){if(is("operator","new")){return new_(allow_calls)}var start=S.token;if(is("punc")){switch(start.value){case"(":next();var ex=expression(true);ex.start=start;ex.end=S.token;expect(")");return subscripts(ex,allow_calls);case"[":return subscripts(array_(),allow_calls);case"{":return subscripts(object_(),allow_calls)}unexpected()}if(is("keyword","function")){next();var func=function_(AST_Function);func.start=start;func.end=prev();return subscripts(func,allow_calls)}if(ATOMIC_START_TOKEN[S.token.type]){return subscripts(as_atom_node(),allow_calls)}unexpected()};function expr_list(closing,allow_trailing_comma,allow_empty){var first=true,a=[];while(!is("punc",closing)){if(first)first=false;else expect(",");if(allow_trailing_comma&&is("punc",closing))break;if(is("punc",",")&&allow_empty){a.push(new AST_Hole({start:S.token,end:S.token}))}else{a.push(expression(false))}}next();return a}var array_=embed_tokens(function(){expect("[");return new AST_Array({elements:expr_list("]",!options.strict,true)})});var create_accessor=embed_tokens(function(){return function_(AST_Accessor)});var object_=embed_tokens(function(){expect("{");var first=true,a=[];while(!is("punc","}")){if(first)first=false;else expect(",");if(!options.strict&&is("punc","}"))break;var start=S.token;var type=start.type;var name=as_property_name();if(type=="name"&&!is("punc",":")){if(name=="get"){a.push(new AST_ObjectGetter({start:start,key:as_atom_node(),value:create_accessor(),end:prev()}));continue}if(name=="set"){a.push(new AST_ObjectSetter({start:start,key:as_atom_node(),value:create_accessor(),end:prev()}));continue}}expect(":")
+;a.push(new AST_ObjectKeyVal({start:start,quote:start.quote,key:name,value:expression(false),end:prev()}))}next();return new AST_Object({properties:a})});function as_property_name(){var tmp=S.token;next();switch(tmp.type){case"num":case"string":case"name":case"operator":case"keyword":case"atom":return tmp.value;default:unexpected()}}function as_name(){var tmp=S.token;next();switch(tmp.type){case"name":case"operator":case"keyword":case"atom":return tmp.value;default:unexpected()}}function _make_symbol(type){var name=S.token.value;return new(name=="this"?AST_This:type)({name:String(name),start:S.token,end:S.token})}function as_symbol(type,noerror){if(!is("name")){if(!noerror)croak("Name expected");return null}var sym=_make_symbol(type);next();return sym}var subscripts=function(expr,allow_calls){var start=expr.start;if(is("punc",".")){next();return subscripts(new AST_Dot({start:start,expression:expr,property:as_name(),end:prev()}),allow_calls)}if(is("punc","[")){next();var prop=expression(true);expect("]");return subscripts(new AST_Sub({start:start,expression:expr,property:prop,end:prev()}),allow_calls)}if(allow_calls&&is("punc","(")){next();return subscripts(new AST_Call({start:start,expression:expr,args:expr_list(")"),end:prev()}),true)}return expr};var maybe_unary=function(allow_calls){var start=S.token;if(is("operator")&&UNARY_PREFIX(start.value)){next();handle_regexp();var ex=make_unary(AST_UnaryPrefix,start.value,maybe_unary(allow_calls));ex.start=start;ex.end=prev();return ex}var val=expr_atom(allow_calls);while(is("operator")&&UNARY_POSTFIX(S.token.value)&&!S.token.nlb){val=make_unary(AST_UnaryPostfix,S.token.value,val);val.start=start;val.end=S.token;next()}return val};function make_unary(ctor,op,expr){if((op=="++"||op=="--")&&!is_assignable(expr))croak("Invalid use of "+op+" operator");return new ctor({operator:op,expression:expr})}var expr_op=function(left,min_prec,no_in){var op=is("operator")?S.token.value:null;if(op=="in"&&no_in)op=null;var prec=op!=null?PRECEDENCE[op]:null;if(prec!=null&&prec>min_prec){next();var right=expr_op(maybe_unary(true),prec,no_in);return expr_op(new AST_Binary({start:left.start,left:left,operator:op,right:right,end:right.end}),min_prec,no_in)}return left};function expr_ops(no_in){return expr_op(maybe_unary(true),0,no_in)}var maybe_conditional=function(no_in){var start=S.token;var expr=expr_ops(no_in);if(is("operator","?")){next();var yes=expression(false);expect(":");return new AST_Conditional({start:start,condition:expr,consequent:yes,alternative:expression(false,no_in),end:prev()})}return expr};function is_assignable(expr){if(!options.strict)return true;if(expr instanceof AST_This)return false;return expr instanceof AST_PropAccess||expr instanceof AST_Symbol}var maybe_assign=function(no_in){var start=S.token;var left=maybe_conditional(no_in),val=S.token.value;if(is("operator")&&ASSIGNMENT(val)){if(is_assignable(left)){next();return new AST_Assign({start:start,left:left,operator:val,right:maybe_assign(no_in),end:prev()})}croak("Invalid assignment")}return left};var expression=function(commas,no_in){var start=S.token;var expr=maybe_assign(no_in);if(commas&&is("punc",",")){next();return new AST_Seq({start:start,car:expr,cdr:expression(true,no_in),end:peek()})}return expr};function in_loop(cont){++S.in_loop;var ret=cont();--S.in_loop;return ret}if(options.expression){return expression(true)}return function(){var start=S.token;var body=[];S.input.push_directives_stack();while(!is("eof"))body.push(statement());S.input.pop_directives_stack();var end=prev();var toplevel=options.toplevel;if(toplevel){toplevel.body=toplevel.body.concat(body);toplevel.end=end}else{toplevel=new AST_Toplevel({start:start,body:body,end:end})}return toplevel}()}/***********************************************************************
 
   A JavaScript tokenizer / parser / beautifier / compressor.
   https://github.com/mishoo/UglifyJS2
 
   -------------------------------- (C) ---------------------------------
@@ -292,10 +292,10 @@
     TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     SUCH DAMAGE.
 
  ***********************************************************************/
-"use strict";function Compressor(options,false_by_default){if(!(this instanceof Compressor))return new Compressor(options,false_by_default);TreeTransformer.call(this,this.before,this.after);this.options=defaults(options,{sequences:!false_by_default,properties:!false_by_default,dead_code:!false_by_default,drop_debugger:!false_by_default,unsafe:false,unsafe_comps:false,unsafe_math:false,unsafe_proto:false,conditionals:!false_by_default,comparisons:!false_by_default,evaluate:!false_by_default,booleans:!false_by_default,loops:!false_by_default,unused:!false_by_default,toplevel:!!(options&&options["top_retain"]),top_retain:null,hoist_funs:!false_by_default,keep_fargs:true,keep_fnames:false,hoist_vars:false,if_return:!false_by_default,join_vars:!false_by_default,collapse_vars:!false_by_default,reduce_vars:!false_by_default,cascade:!false_by_default,side_effects:!false_by_default,pure_getters:false,pure_funcs:null,negate_iife:!false_by_default,screw_ie8:true,drop_console:false,angular:false,expression:false,warnings:true,global_defs:{},passes:1},true);var pure_funcs=this.options["pure_funcs"];if(typeof pure_funcs=="function"){this.pure_funcs=pure_funcs}else{this.pure_funcs=pure_funcs?function(node){return pure_funcs.indexOf(node.expression.print_to_string())<0}:return_true}var top_retain=this.options["top_retain"];if(top_retain instanceof RegExp){this.top_retain=function(def){return top_retain.test(def.name)}}else if(typeof top_retain==="function"){this.top_retain=top_retain}else if(top_retain){if(typeof top_retain==="string"){top_retain=top_retain.split(/,/)}this.top_retain=function(def){return top_retain.indexOf(def.name)>=0}}var sequences=this.options["sequences"];this.sequences_limit=sequences==1?200:sequences|0;this.warnings_produced={}}Compressor.prototype=new TreeTransformer;merge(Compressor.prototype,{option:function(key){return this.options[key]},compress:function(node){if(this.option("expression")){node=node.process_expression(true)}var passes=+this.options.passes||1;for(var pass=0;pass<passes&&pass<3;++pass){if(pass>0||this.option("reduce_vars"))node.reset_opt_flags(this,true);node=node.transform(this)}if(this.option("expression")){node=node.process_expression(false)}return node},warn:function(text,props){if(this.options.warnings){var message=string_template(text,props);if(!(message in this.warnings_produced)){this.warnings_produced[message]=true;AST_Node.warn.apply(AST_Node,arguments)}}},clear_warnings:function(){this.warnings_produced={}},before:function(node,descend,in_list){if(node._squeezed)return node;var was_scope=false;if(node instanceof AST_Scope){node=node.hoist_declarations(this);was_scope=true}descend(node,this);node=node.optimize(this);if(was_scope&&node instanceof AST_Scope){node.drop_unused(this);descend(node,this)}node._squeezed=true;return node}});(function(){function OPT(node,optimizer){node.DEFMETHOD("optimize",function(compressor){var self=this;if(self._optimized)return self;if(compressor.has_directive("use asm"))return self;var opt=optimizer(self,compressor);opt._optimized=true;if(opt===self)return opt;return opt.transform(compressor)})}OPT(AST_Node,function(self,compressor){return self});AST_Node.DEFMETHOD("equivalent_to",function(node){return this.print_to_string()==node.print_to_string()});AST_Node.DEFMETHOD("process_expression",function(insert){var self=this;var tt=new TreeTransformer(function(node){if(insert&&node instanceof AST_SimpleStatement){return make_node(AST_Return,node,{value:node.body})}if(!insert&&node instanceof AST_Return){return make_node(AST_SimpleStatement,node,{body:node.value||make_node(AST_Undefined,node)})}if(node instanceof AST_Lambda&&node!==self){return node}if(node instanceof AST_Block){var index=node.body.length-1;if(index>=0){node.body[index]=node.body[index].transform(tt)}}if(node instanceof AST_If){node.body=node.body.transform(tt);if(node.alternative){node.alternative=node.alternative.transform(tt)}}if(node instanceof AST_With){node.body=node.body.transform(tt)}return node});return self.transform(tt)});AST_Node.DEFMETHOD("reset_opt_flags",function(compressor,rescan){var reduce_vars=rescan&&compressor.option("reduce_vars");var toplevel=compressor.option("toplevel");var ie8=!compressor.option("screw_ie8");var safe_ids=[];push();var suppressor=new TreeWalker(function(node){if(node instanceof AST_Symbol){var d=node.definition();if(node instanceof AST_SymbolRef)d.references.push(node);d.fixed=false}});var tw=new TreeWalker(function(node,descend){if(!(node instanceof AST_Directive||node instanceof AST_Constant)){node._squeezed=false;node._optimized=false}if(reduce_vars){if(node instanceof AST_Toplevel)node.globals.each(reset_def);if(node instanceof AST_Scope)node.variables.each(reset_def);if(node instanceof AST_SymbolRef){var d=node.definition();d.references.push(node);if(!d.fixed||!is_safe(d)||is_modified(node,0,d.fixed instanceof AST_Lambda)){d.fixed=false}}if(ie8&&node instanceof AST_SymbolCatch){node.definition().fixed=false}if(node instanceof AST_VarDef){var d=node.name.definition();if(d.fixed===undefined){d.fixed=node.value||make_node(AST_Undefined,node);mark_as_safe(d)}else{d.fixed=false}}if(node instanceof AST_Defun){var d=node.name.definition();if(!toplevel&&d.global||is_safe(d)){d.fixed=false}else{d.fixed=node;mark_as_safe(d)}var save_ids=safe_ids;safe_ids=[];push();descend();safe_ids=save_ids;return true}var iife;if(node instanceof AST_Function&&(iife=tw.parent())instanceof AST_Call&&iife.expression===node){node.argnames.forEach(function(arg,i){var d=arg.definition();d.fixed=iife.args[i]||make_node(AST_Undefined,iife);mark_as_safe(d)})}if(node instanceof AST_If||node instanceof AST_DWLoop){node.condition.walk(tw);push();node.body.walk(tw);pop();if(node.alternative){push();node.alternative.walk(tw);pop()}return true}if(node instanceof AST_LabeledStatement){push();node.body.walk(tw);pop();return true}if(node instanceof AST_For){if(node.init)node.init.walk(tw);push();if(node.condition)node.condition.walk(tw);node.body.walk(tw);if(node.step)node.step.walk(tw);pop();return true}if(node instanceof AST_ForIn){node.init.walk(suppressor);node.object.walk(tw);push();node.body.walk(tw);pop();return true}if(node instanceof AST_Catch){push();descend();pop();return true}}});this.walk(tw);function mark_as_safe(def){safe_ids[safe_ids.length-1][def.id]=true}function is_safe(def){for(var i=safe_ids.length,id=def.id;--i>=0;){if(safe_ids[i][id])return true}}function push(){safe_ids.push(Object.create(null))}function pop(){safe_ids.pop()}function reset_def(def){if(toplevel||!def.global||def.orig[0]instanceof AST_SymbolConst){def.fixed=undefined}else{def.fixed=false}def.references=[];def.should_replace=undefined}function is_modified(node,level,func){var parent=tw.parent(level);if(isLHS(node,parent)||!func&&parent instanceof AST_Call&&parent.expression===node){return true}else if(parent instanceof AST_PropAccess&&parent.expression===node){return!func&&is_modified(parent,level+1)}}});function make_node(ctor,orig,props){if(!props)props={};if(orig){if(!props.start)props.start=orig.start;if(!props.end)props.end=orig.end}return new ctor(props)}function make_node_from_constant(compressor,val,orig){switch(typeof val){case"string":return make_node(AST_String,orig,{value:val});case"number":if(isNaN(val)){return make_node(AST_NaN,orig)}if(1/val<0){return make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Number,orig,{value:-val})})}return make_node(AST_Number,orig,{value:val});case"boolean":return make_node(val?AST_True:AST_False,orig).transform(compressor);case"undefined":return make_node(AST_Undefined,orig).transform(compressor);default:if(val===null){return make_node(AST_Null,orig,{value:null})}if(val instanceof RegExp){return make_node(AST_RegExp,orig,{value:val})}throw new Error(string_template("Can't handle constant of type: {type}",{type:typeof val}))}}function maintain_this_binding(parent,orig,val){if(parent instanceof AST_Call&&parent.expression===orig){if(val instanceof AST_PropAccess||val instanceof AST_SymbolRef&&val.name==="eval"){return make_node(AST_Seq,orig,{car:make_node(AST_Number,orig,{value:0}),cdr:val})}}return val}function as_statement_array(thing){if(thing===null)return[];if(thing instanceof AST_BlockStatement)return thing.body;if(thing instanceof AST_EmptyStatement)return[];if(thing instanceof AST_Statement)return[thing];throw new Error("Can't convert thing to statement array")}function is_empty(thing){if(thing===null)return true;if(thing instanceof AST_EmptyStatement)return true;if(thing instanceof AST_BlockStatement)return thing.body.length==0;return false}function loop_body(x){if(x instanceof AST_Switch)return x;if(x instanceof AST_For||x instanceof AST_ForIn||x instanceof AST_DWLoop){return x.body instanceof AST_BlockStatement?x.body:x}return x}var readOnlyPrefix=makePredicate("! ~ + - void typeof");function statement_to_expression(stat){if(stat.body instanceof AST_UnaryPrefix&&readOnlyPrefix(stat.body.operator)){return stat.body.expression}else{return stat.body}}function is_iife_call(node){if(node instanceof AST_Call&&!(node instanceof AST_New)){return node.expression instanceof AST_Function||is_iife_call(node.expression)}return false}function tighten_body(statements,compressor){var CHANGED,max_iter=10;do{CHANGED=false;if(compressor.option("angular")){statements=process_for_angular(statements)}statements=eliminate_spurious_blocks(statements);if(compressor.option("dead_code")){statements=eliminate_dead_code(statements,compressor)}if(compressor.option("if_return")){statements=handle_if_return(statements,compressor)}if(compressor.sequences_limit>0){statements=sequencesize(statements,compressor)}if(compressor.option("join_vars")){statements=join_consecutive_vars(statements,compressor)}if(compressor.option("collapse_vars")){statements=collapse_single_use_vars(statements,compressor)}}while(CHANGED&&max_iter-- >0);return statements;function collapse_single_use_vars(statements,compressor){var self=compressor.self();var var_defs_removed=false;for(var stat_index=statements.length;--stat_index>=0;){var stat=statements[stat_index];if(stat instanceof AST_Definitions)continue;[stat,stat.body,stat.alternative,stat.bcatch,stat.bfinally].forEach(function(node){node&&node.body&&collapse_single_use_vars(node.body,compressor)});if(stat_index<=0)break;var prev_stat_index=stat_index-1;var prev_stat=statements[prev_stat_index];if(!(prev_stat instanceof AST_Definitions))continue;var var_defs=prev_stat.definitions;if(var_defs==null)continue;var var_names_seen={};var side_effects_encountered=false;var lvalues_encountered=false;var lvalues={};for(var var_defs_index=var_defs.length;--var_defs_index>=0;){var var_decl=var_defs[var_defs_index];if(var_decl.value==null)break;var var_name=var_decl.name.name;if(!var_name||!var_name.length)break;if(var_name in var_names_seen)break;var_names_seen[var_name]=true;var def=self.find_variable&&self.find_variable(var_name);if(!def||!def.references||def.references.length!==1||var_name=="arguments"){side_effects_encountered=true;continue}var ref=def.references[0];if(ref.scope.uses_eval||ref.scope.uses_with)break;if(var_decl.value.is_constant()){var ctt=new TreeTransformer(function(node){var parent=ctt.parent();if(parent instanceof AST_IterationStatement&&(parent.condition===node||parent.init===node)){return node}if(node===ref)return replace_var(node,parent,true)});stat.transform(ctt);continue}if(side_effects_encountered|=lvalues_encountered)continue;if(ref.scope!==self){side_effects_encountered|=var_decl.value.has_side_effects(compressor);continue}var tw=new TreeWalker(function(node){if(node instanceof AST_SymbolRef&&is_lvalue(node,tw.parent())){lvalues[node.name]=lvalues_encountered=true}});var_decl.value.walk(tw);var unwind=false;var tt=new TreeTransformer(function preorder(node){if(unwind)return node;var parent=tt.parent();if(node instanceof AST_Lambda||node instanceof AST_Try||node instanceof AST_With||node instanceof AST_Case||node instanceof AST_IterationStatement||parent instanceof AST_If&&node!==parent.condition||parent instanceof AST_Conditional&&node!==parent.condition||parent instanceof AST_Binary&&(parent.operator=="&&"||parent.operator=="||")&&node===parent.right||parent instanceof AST_Switch&&node!==parent.expression){return side_effects_encountered=unwind=true,node}},function postorder(node){if(unwind)return node;if(node===ref)return unwind=true,replace_var(node,tt.parent(),false);if(side_effects_encountered|=node.has_side_effects(compressor))return unwind=true,node;if(lvalues_encountered&&node instanceof AST_SymbolRef&&node.name in lvalues){side_effects_encountered=true;return unwind=true,node}});stat.transform(tt)}}if(var_defs_removed)for(var i=statements.length;--i>=0;){if(statements.length>1&&statements[i]instanceof AST_EmptyStatement)statements.splice(i,1)}return statements;function is_lvalue(node,parent){return node instanceof AST_SymbolRef&&isLHS(node,parent)}function replace_var(node,parent,is_constant){if(is_lvalue(node,parent))return node;var value=maintain_this_binding(parent,node,var_decl.value);var_decl.value=null;var_defs.splice(var_defs_index,1);if(var_defs.length===0){statements[prev_stat_index]=make_node(AST_EmptyStatement,self);var_defs_removed=true}stat.reset_opt_flags(compressor);compressor.warn("Collapsing "+(is_constant?"constant":"variable")+" "+var_name+" [{file}:{line},{col}]",node.start);CHANGED=true;return value}}function process_for_angular(statements){function has_inject(comment){return/@ngInject/.test(comment.value)}function make_arguments_names_list(func){return func.argnames.map(function(sym){return make_node(AST_String,sym,{value:sym.name})})}function make_array(orig,elements){return make_node(AST_Array,orig,{elements:elements})}function make_injector(func,name){return make_node(AST_SimpleStatement,func,{body:make_node(AST_Assign,func,{operator:"=",left:make_node(AST_Dot,name,{expression:make_node(AST_SymbolRef,name,name),property:"$inject"}),right:make_array(func,make_arguments_names_list(func))})})}function check_expression(body){if(body&&body.args){body.args.forEach(function(argument,index,array){var comments=argument.start.comments_before;if(argument instanceof AST_Lambda&&comments.length&&has_inject(comments[0])){array[index]=make_array(argument,make_arguments_names_list(argument).concat(argument))}});if(body.expression&&body.expression.expression){check_expression(body.expression.expression)}}}return statements.reduce(function(a,stat){a.push(stat);if(stat.body&&stat.body.args){check_expression(stat.body)}else{var token=stat.start;var comments=token.comments_before;if(comments&&comments.length>0){var last=comments.pop();if(has_inject(last)){if(stat instanceof AST_Defun){a.push(make_injector(stat,stat.name))}else if(stat instanceof AST_Definitions){stat.definitions.forEach(function(def){if(def.value&&def.value instanceof AST_Lambda){a.push(make_injector(def.value,def.name))}})}else{compressor.warn("Unknown statement marked with @ngInject [{file}:{line},{col}]",token)}}}}return a},[])}function eliminate_spurious_blocks(statements){var seen_dirs=[];return statements.reduce(function(a,stat){if(stat instanceof AST_BlockStatement){CHANGED=true;a.push.apply(a,eliminate_spurious_blocks(stat.body))}else if(stat instanceof AST_EmptyStatement){CHANGED=true}else if(stat instanceof AST_Directive){if(seen_dirs.indexOf(stat.value)<0){a.push(stat);seen_dirs.push(stat.value)}else{CHANGED=true}}else{a.push(stat)}return a},[])}function handle_if_return(statements,compressor){var self=compressor.self();var multiple_if_returns=has_multiple_if_returns(statements);var in_lambda=self instanceof AST_Lambda;var ret=[];loop:for(var i=statements.length;--i>=0;){var stat=statements[i];switch(true){case in_lambda&&stat instanceof AST_Return&&!stat.value&&ret.length==0:CHANGED=true;continue loop;case stat instanceof AST_If:if(stat.body instanceof AST_Return){if((in_lambda&&ret.length==0||ret[0]instanceof AST_Return&&!ret[0].value)&&!stat.body.value&&!stat.alternative){CHANGED=true;var cond=make_node(AST_SimpleStatement,stat.condition,{body:stat.condition});ret.unshift(cond);continue loop}if(ret[0]instanceof AST_Return&&stat.body.value&&ret[0].value&&!stat.alternative){CHANGED=true;stat=stat.clone();stat.alternative=ret[0];ret[0]=stat.transform(compressor);continue loop}if(multiple_if_returns&&(ret.length==0||ret[0]instanceof AST_Return)&&stat.body.value&&!stat.alternative&&in_lambda){CHANGED=true;stat=stat.clone();stat.alternative=ret[0]||make_node(AST_Return,stat,{value:null});ret[0]=stat.transform(compressor);continue loop}if(!stat.body.value&&in_lambda){CHANGED=true;stat=stat.clone();stat.condition=stat.condition.negate(compressor);var body=as_statement_array(stat.alternative).concat(ret);var funs=extract_functions_from_statement_array(body);stat.body=make_node(AST_BlockStatement,stat,{body:body});stat.alternative=null;ret=funs.concat([stat.transform(compressor)]);continue loop}if(compressor.option("sequences")&&i>0&&statements[i-1]instanceof AST_If&&statements[i-1].body instanceof AST_Return&&ret.length==1&&in_lambda&&ret[0]instanceof AST_SimpleStatement&&!stat.alternative){CHANGED=true;ret.push(make_node(AST_Return,ret[0],{value:null}).transform(compressor));ret.unshift(stat);continue loop}}var ab=aborts(stat.body);var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab.label):null;if(ab&&(ab instanceof AST_Return&&!ab.value&&in_lambda||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;var body=as_statement_array(stat.body).slice(0,-1);stat=stat.clone();stat.condition=stat.condition.negate(compressor);stat.body=make_node(AST_BlockStatement,stat,{body:as_statement_array(stat.alternative).concat(ret)});stat.alternative=make_node(AST_BlockStatement,stat,{body:body});ret=[stat.transform(compressor)];continue loop}var ab=aborts(stat.alternative);var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab.label):null;if(ab&&(ab instanceof AST_Return&&!ab.value&&in_lambda||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.body=make_node(AST_BlockStatement,stat.body,{body:as_statement_array(stat.body).concat(ret)});stat.alternative=make_node(AST_BlockStatement,stat.alternative,{body:as_statement_array(stat.alternative).slice(0,-1)});ret=[stat.transform(compressor)];continue loop}ret.unshift(stat);break;default:ret.unshift(stat);break}}return ret;function has_multiple_if_returns(statements){var n=0;for(var i=statements.length;--i>=0;){var stat=statements[i];if(stat instanceof AST_If&&stat.body instanceof AST_Return){if(++n>1)return true}}return false}}function eliminate_dead_code(statements,compressor){var has_quit=false;var orig=statements.length;var self=compressor.self();statements=statements.reduce(function(a,stat){if(has_quit){extract_declarations_from_unreachable_code(compressor,stat,a)}else{if(stat instanceof AST_LoopControl){var lct=compressor.loopcontrol_target(stat.label);if(stat instanceof AST_Break&&lct instanceof AST_BlockStatement&&loop_body(lct)===self||stat instanceof AST_Continue&&loop_body(lct)===self){if(stat.label){remove(stat.label.thedef.references,stat)}}else{a.push(stat)}}else{a.push(stat)}if(aborts(stat))has_quit=true}return a},[]);CHANGED=statements.length!=orig;return statements}function sequencesize(statements,compressor){if(statements.length<2)return statements;var seq=[],ret=[];function push_seq(){seq=AST_Seq.from_array(seq);if(seq)ret.push(make_node(AST_SimpleStatement,seq,{body:seq}));seq=[]}statements.forEach(function(stat){if(stat instanceof AST_SimpleStatement){if(seqLength(seq)>=compressor.sequences_limit){push_seq()}seq.push(seq.length>0?statement_to_expression(stat):stat.body)}else{push_seq();ret.push(stat)}});push_seq();ret=sequencesize_2(ret,compressor);CHANGED=ret.length!=statements.length;return ret}function seqLength(a){for(var len=0,i=0;i<a.length;++i){var stat=a[i];if(stat instanceof AST_Seq){len+=stat.len()}else{len++}}return len}function sequencesize_2(statements,compressor){function cons_seq(right){ret.pop();var left=prev.body;if(left instanceof AST_Seq){left.add(right)}else{left=AST_Seq.cons(left,right)}return left.transform(compressor)}var ret=[],prev=null;statements.forEach(function(stat){if(prev){if(stat instanceof AST_For){var opera={};try{prev.body.walk(new TreeWalker(function(node){if(node instanceof AST_Binary&&node.operator=="in")throw opera}));if(stat.init&&!(stat.init instanceof AST_Definitions)){stat.init=cons_seq(stat.init)}else if(!stat.init){stat.init=statement_to_expression(prev);ret.pop()}}catch(ex){if(ex!==opera)throw ex}}else if(stat instanceof AST_If){stat.condition=cons_seq(stat.condition)}else if(stat instanceof AST_With){stat.expression=cons_seq(stat.expression)}else if(stat instanceof AST_Exit&&stat.value){stat.value=cons_seq(stat.value)}else if(stat instanceof AST_Exit){stat.value=cons_seq(make_node(AST_Undefined,stat))}else if(stat instanceof AST_Switch){stat.expression=cons_seq(stat.expression)}}ret.push(stat);prev=stat instanceof AST_SimpleStatement?stat:null});return ret}function join_consecutive_vars(statements,compressor){var prev=null;return statements.reduce(function(a,stat){if(stat instanceof AST_Definitions&&prev&&prev.TYPE==stat.TYPE){prev.definitions=prev.definitions.concat(stat.definitions);CHANGED=true}else if(stat instanceof AST_For&&prev instanceof AST_Var&&(!stat.init||stat.init.TYPE==prev.TYPE)){CHANGED=true;a.pop();if(stat.init){stat.init.definitions=prev.definitions.concat(stat.init.definitions)}else{stat.init=prev}a.push(stat);prev=stat}else{prev=stat;a.push(stat)}return a},[])}}function extract_functions_from_statement_array(statements){var funs=[];for(var i=statements.length-1;i>=0;--i){var stat=statements[i];if(stat instanceof AST_Defun){statements.splice(i,1);funs.unshift(stat)}}return funs}function extract_declarations_from_unreachable_code(compressor,stat,target){if(!(stat instanceof AST_Defun)){compressor.warn("Dropping unreachable code [{file}:{line},{col}]",stat.start)}stat.walk(new TreeWalker(function(node){if(node instanceof AST_Definitions){compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]",node.start);node.remove_initializers();target.push(node);return true}if(node instanceof AST_Defun){target.push(node);return true}if(node instanceof AST_Scope){return true}}))}function is_undefined(node){return node instanceof AST_Undefined||node.is_undefined}(function(def){var unary_bool=["!","delete"];var binary_bool=["in","instanceof","==","!=","===","!==","<","<=",">=",">"];def(AST_Node,return_false);def(AST_UnaryPrefix,function(){return member(this.operator,unary_bool)});def(AST_Binary,function(){return member(this.operator,binary_bool)||(this.operator=="&&"||this.operator=="||")&&this.left.is_boolean()&&this.right.is_boolean()});def(AST_Conditional,function(){return this.consequent.is_boolean()&&this.alternative.is_boolean()});def(AST_Assign,function(){return this.operator=="="&&this.right.is_boolean()});def(AST_Seq,function(){return this.cdr.is_boolean()});def(AST_True,return_true);def(AST_False,return_true)})(function(node,func){node.DEFMETHOD("is_boolean",func)});(function(def){def(AST_Node,return_false);def(AST_Number,return_true);var unary=makePredicate("+ - ~ ++ --");def(AST_Unary,function(){return unary(this.operator)});var binary=makePredicate("- * / % & | ^ << >> >>>");def(AST_Binary,function(compressor){return binary(this.operator)||this.operator=="+"&&this.left.is_number(compressor)&&this.right.is_number(compressor)});var assign=makePredicate("-= *= /= %= &= |= ^= <<= >>= >>>=");def(AST_Assign,function(compressor){return assign(this.operator)||this.right.is_number(compressor)});def(AST_Seq,function(compressor){return this.cdr.is_number(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_number(compressor)&&this.alternative.is_number(compressor)})})(function(node,func){node.DEFMETHOD("is_number",func)});(function(def){def(AST_Node,return_false);def(AST_String,return_true);def(AST_UnaryPrefix,function(){return this.operator=="typeof"});def(AST_Binary,function(compressor){return this.operator=="+"&&(this.left.is_string(compressor)||this.right.is_string(compressor))});def(AST_Assign,function(compressor){return(this.operator=="="||this.operator=="+=")&&this.right.is_string(compressor)});def(AST_Seq,function(compressor){return this.cdr.is_string(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_string(compressor)&&this.alternative.is_string(compressor)})})(function(node,func){node.DEFMETHOD("is_string",func)});function isLHS(node,parent){return parent instanceof AST_Unary&&(parent.operator=="++"||parent.operator=="--")||parent instanceof AST_Assign&&parent.left===node}(function(def){AST_Node.DEFMETHOD("resolve_defines",function(compressor){if(!compressor.option("global_defs"))return;var def=this._find_defs(compressor,"");if(def){var node,parent=this,level=0;do{node=parent;parent=compressor.parent(level++)}while(parent instanceof AST_PropAccess&&parent.expression===node);if(isLHS(node,parent)){compressor.warn("global_defs "+this.print_to_string()+" redefined [{file}:{line},{col}]",this.start)}else{return def}}});function to_node(compressor,value,orig){if(value instanceof AST_Node)return make_node(value.CTOR,orig,value);if(Array.isArray(value))return make_node(AST_Array,orig,{elements:value.map(function(value){return to_node(compressor,value,orig)})});if(value&&typeof value=="object"){var props=[];for(var key in value){props.push(make_node(AST_ObjectKeyVal,orig,{key:key,value:to_node(compressor,value[key],orig)}))}return make_node(AST_Object,orig,{properties:props})}return make_node_from_constant(compressor,value,orig)}def(AST_Node,noop);def(AST_Dot,function(compressor,suffix){return this.expression._find_defs(compressor,suffix+"."+this.property)});def(AST_SymbolRef,function(compressor,suffix){if(!this.global())return;var name;var defines=compressor.option("global_defs");if(defines&&HOP(defines,name=this.name+suffix)){var node=to_node(compressor,defines[name],this);var top=compressor.find_parent(AST_Toplevel);node.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef){node.scope=top;node.thedef=top.def_global(node)}}));return node}})})(function(node,func){node.DEFMETHOD("_find_defs",func)});function best_of(ast1,ast2){return ast1.print_to_string().length>ast2.print_to_string().length?ast2:ast1}function best_of_statement(ast1,ast2){return best_of(make_node(AST_SimpleStatement,ast1,{body:ast1}),make_node(AST_SimpleStatement,ast2,{body:ast2})).body}(function(def){AST_Node.DEFMETHOD("evaluate",function(compressor){if(!compressor.option("evaluate"))return[this];var val;try{val=this._eval(compressor)}catch(ex){if(ex!==def)throw ex;return[this]}var node;try{node=make_node_from_constant(compressor,val,this)}catch(ex){return[this]}return[best_of(node,this),val]});var unaryPrefix=makePredicate("! ~ - +");AST_Node.DEFMETHOD("is_constant",function(){if(this instanceof AST_Constant){return!(this instanceof AST_RegExp)}else{return this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant&&unaryPrefix(this.operator)}});AST_Node.DEFMETHOD("constant_value",function(compressor){if(this instanceof AST_Constant&&!(this instanceof AST_RegExp)){return this.value}if(this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant)switch(this.operator){case"!":return!this.expression.value;case"~":return~this.expression.value;case"-":return-this.expression.value;case"+":return+this.expression.value;default:throw new Error(string_template("Cannot evaluate unary expression {value}",{value:this.print_to_string()}))}var result=this.evaluate(compressor);if(result.length>1){return result[1]}throw new Error(string_template("Cannot evaluate constant [{file}:{line},{col}]",this.start))});def(AST_Statement,function(){throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]",this.start))});def(AST_Lambda,function(){throw def});function ev(node,compressor){if(!compressor)throw new Error("Compressor must be passed");return node._eval(compressor)}def(AST_Node,function(){throw def});def(AST_Constant,function(){return this.getValue()});def(AST_Array,function(compressor){if(compressor.option("unsafe")){return this.elements.map(function(element){return ev(element,compressor)})}throw def});def(AST_Object,function(compressor){if(compressor.option("unsafe")){var val={};for(var i=0,len=this.properties.length;i<len;i++){var prop=this.properties[i];var key=prop.key;if(key instanceof AST_Symbol){key=key.name}else if(key instanceof AST_Node){key=ev(key,compressor)}if(typeof Object.prototype[key]==="function"){throw def}val[key]=ev(prop.value,compressor)}return val}throw def});def(AST_UnaryPrefix,function(compressor){var e=this.expression;switch(this.operator){case"!":return!ev(e,compressor);case"typeof":if(e instanceof AST_Function)return typeof function(){};e=ev(e,compressor);if(e instanceof RegExp)throw def;return typeof e;case"void":return void ev(e,compressor);case"~":return~ev(e,compressor);case"-":return-ev(e,compressor);case"+":return+ev(e,compressor)}throw def});def(AST_Binary,function(c){var left=this.left,right=this.right,result;switch(this.operator){case"&&":result=ev(left,c)&&ev(right,c);break;case"||":result=ev(left,c)||ev(right,c);break;case"|":result=ev(left,c)|ev(right,c);break;case"&":result=ev(left,c)&ev(right,c);break;case"^":result=ev(left,c)^ev(right,c);break;case"+":result=ev(left,c)+ev(right,c);break;case"*":result=ev(left,c)*ev(right,c);break;case"/":result=ev(left,c)/ev(right,c);break;case"%":result=ev(left,c)%ev(right,c);break;case"-":result=ev(left,c)-ev(right,c);break;case"<<":result=ev(left,c)<<ev(right,c);break;case">>":result=ev(left,c)>>ev(right,c);break;case">>>":result=ev(left,c)>>>ev(right,c);break;case"==":result=ev(left,c)==ev(right,c);break;case"===":result=ev(left,c)===ev(right,c);break;case"!=":result=ev(left,c)!=ev(right,c);break;case"!==":result=ev(left,c)!==ev(right,c);break;case"<":result=ev(left,c)<ev(right,c);break;case"<=":result=ev(left,c)<=ev(right,c);break;case">":result=ev(left,c)>ev(right,c);break;case">=":result=ev(left,c)>=ev(right,c);break;default:throw def}if(isNaN(result)&&c.find_parent(AST_With)){throw def}return result});def(AST_Conditional,function(compressor){return ev(this.condition,compressor)?ev(this.consequent,compressor):ev(this.alternative,compressor)});def(AST_SymbolRef,function(compressor){if(this._evaluating)throw def;this._evaluating=true;try{var d=this.definition();if(compressor.option("reduce_vars")&&d.fixed){if(compressor.option("unsafe")){if(!HOP(d.fixed,"_evaluated")){d.fixed._evaluated=ev(d.fixed,compressor)}return d.fixed._evaluated}return ev(d.fixed,compressor)}}finally{this._evaluating=false}throw def});def(AST_PropAccess,function(compressor){if(compressor.option("unsafe")){var key=this.property;if(key instanceof AST_Node){key=ev(key,compressor)}var val=ev(this.expression,compressor);if(val&&HOP(val,key)){return val[key]}}throw def})})(function(node,func){node.DEFMETHOD("_eval",func)});(function(def){function basic_negation(exp){return make_node(AST_UnaryPrefix,exp,{operator:"!",expression:exp})}function best(orig,alt,first_in_statement){var negated=basic_negation(orig);if(first_in_statement){var stat=make_node(AST_SimpleStatement,alt,{body:alt});return best_of(negated,stat)===stat?alt:negated}return best_of(negated,alt)}def(AST_Node,function(){return basic_negation(this)});def(AST_Statement,function(){throw new Error("Cannot negate a statement")});def(AST_Function,function(){return basic_negation(this)});def(AST_UnaryPrefix,function(){if(this.operator=="!")return this.expression;return basic_negation(this)});def(AST_Seq,function(compressor){var self=this.clone()
+"use strict";function Compressor(options,false_by_default){if(!(this instanceof Compressor))return new Compressor(options,false_by_default);TreeTransformer.call(this,this.before,this.after);this.options=defaults(options,{sequences:!false_by_default,properties:!false_by_default,dead_code:!false_by_default,drop_debugger:!false_by_default,unsafe:false,unsafe_comps:false,unsafe_math:false,unsafe_proto:false,conditionals:!false_by_default,comparisons:!false_by_default,evaluate:!false_by_default,booleans:!false_by_default,loops:!false_by_default,unused:!false_by_default,toplevel:!!(options&&options["top_retain"]),top_retain:null,hoist_funs:!false_by_default,keep_fargs:true,keep_fnames:false,hoist_vars:false,if_return:!false_by_default,join_vars:!false_by_default,collapse_vars:!false_by_default,reduce_vars:!false_by_default,cascade:!false_by_default,side_effects:!false_by_default,pure_getters:false,pure_funcs:null,negate_iife:!false_by_default,screw_ie8:true,drop_console:false,angular:false,expression:false,warnings:true,global_defs:{},passes:1},true);var pure_funcs=this.options["pure_funcs"];if(typeof pure_funcs=="function"){this.pure_funcs=pure_funcs}else{this.pure_funcs=pure_funcs?function(node){return pure_funcs.indexOf(node.expression.print_to_string())<0}:return_true}var top_retain=this.options["top_retain"];if(top_retain instanceof RegExp){this.top_retain=function(def){return top_retain.test(def.name)}}else if(typeof top_retain==="function"){this.top_retain=top_retain}else if(top_retain){if(typeof top_retain==="string"){top_retain=top_retain.split(/,/)}this.top_retain=function(def){return top_retain.indexOf(def.name)>=0}}var sequences=this.options["sequences"];this.sequences_limit=sequences==1?200:sequences|0;this.warnings_produced={}}Compressor.prototype=new TreeTransformer;merge(Compressor.prototype,{option:function(key){return this.options[key]},compress:function(node){if(this.option("expression")){node=node.process_expression(true)}var passes=+this.options.passes||1;for(var pass=0;pass<passes&&pass<3;++pass){if(pass>0||this.option("reduce_vars"))node.reset_opt_flags(this,true);node=node.transform(this)}if(this.option("expression")){node=node.process_expression(false)}return node},warn:function(text,props){if(this.options.warnings){var message=string_template(text,props);if(!(message in this.warnings_produced)){this.warnings_produced[message]=true;AST_Node.warn.apply(AST_Node,arguments)}}},clear_warnings:function(){this.warnings_produced={}},before:function(node,descend,in_list){if(node._squeezed)return node;var was_scope=false;if(node instanceof AST_Scope){node=node.hoist_declarations(this);was_scope=true}descend(node,this);node=node.optimize(this);if(was_scope&&node instanceof AST_Scope){node.drop_unused(this);descend(node,this)}node._squeezed=true;return node}});(function(){function OPT(node,optimizer){node.DEFMETHOD("optimize",function(compressor){var self=this;if(self._optimized)return self;if(compressor.has_directive("use asm"))return self;var opt=optimizer(self,compressor);opt._optimized=true;if(opt===self)return opt;return opt.transform(compressor)})}OPT(AST_Node,function(self,compressor){return self});AST_Node.DEFMETHOD("equivalent_to",function(node){return this.print_to_string()==node.print_to_string()});AST_Node.DEFMETHOD("process_expression",function(insert){var self=this;var tt=new TreeTransformer(function(node){if(insert&&node instanceof AST_SimpleStatement){return make_node(AST_Return,node,{value:node.body})}if(!insert&&node instanceof AST_Return){return make_node(AST_SimpleStatement,node,{body:node.value||make_node(AST_Undefined,node)})}if(node instanceof AST_Lambda&&node!==self){return node}if(node instanceof AST_Block){var index=node.body.length-1;if(index>=0){node.body[index]=node.body[index].transform(tt)}}if(node instanceof AST_If){node.body=node.body.transform(tt);if(node.alternative){node.alternative=node.alternative.transform(tt)}}if(node instanceof AST_With){node.body=node.body.transform(tt)}return node});return self.transform(tt)});AST_Node.DEFMETHOD("reset_opt_flags",function(compressor,rescan){var reduce_vars=rescan&&compressor.option("reduce_vars");var toplevel=compressor.option("toplevel");var ie8=!compressor.option("screw_ie8");var safe_ids=[];push();var suppressor=new TreeWalker(function(node){if(node instanceof AST_Symbol){var d=node.definition();if(node instanceof AST_SymbolRef)d.references.push(node);d.fixed=false}});var tw=new TreeWalker(function(node,descend){if(!(node instanceof AST_Directive||node instanceof AST_Constant)){node._squeezed=false;node._optimized=false}if(reduce_vars){if(node instanceof AST_Toplevel)node.globals.each(reset_def);if(node instanceof AST_Scope)node.variables.each(reset_def);if(node instanceof AST_SymbolRef){var d=node.definition();d.references.push(node);if(!d.fixed||!is_safe(d)||is_modified(node,0,d.fixed instanceof AST_Lambda)){d.fixed=false}}if(ie8&&node instanceof AST_SymbolCatch){node.definition().fixed=false}if(node instanceof AST_VarDef){var d=node.name.definition();if(d.fixed===undefined){d.fixed=node.value||make_node(AST_Undefined,node);mark_as_safe(d)}else{d.fixed=false}}if(node instanceof AST_Defun){var d=node.name.definition();if(!toplevel&&d.global||is_safe(d)){d.fixed=false}else{d.fixed=node;mark_as_safe(d)}var save_ids=safe_ids;safe_ids=[];push();descend();safe_ids=save_ids;return true}var iife;if(node instanceof AST_Function&&!node.name&&(iife=tw.parent())instanceof AST_Call&&iife.expression===node){node.argnames.forEach(function(arg,i){var d=arg.definition();d.fixed=iife.args[i]||make_node(AST_Undefined,iife);mark_as_safe(d)})}if(node instanceof AST_If||node instanceof AST_DWLoop){node.condition.walk(tw);push();node.body.walk(tw);pop();if(node.alternative){push();node.alternative.walk(tw);pop()}return true}if(node instanceof AST_LabeledStatement){push();node.body.walk(tw);pop();return true}if(node instanceof AST_For){if(node.init)node.init.walk(tw);push();if(node.condition)node.condition.walk(tw);node.body.walk(tw);if(node.step)node.step.walk(tw);pop();return true}if(node instanceof AST_ForIn){node.init.walk(suppressor);node.object.walk(tw);push();node.body.walk(tw);pop();return true}if(node instanceof AST_Catch){push();descend();pop();return true}}});this.walk(tw);function mark_as_safe(def){safe_ids[safe_ids.length-1][def.id]=true}function is_safe(def){for(var i=safe_ids.length,id=def.id;--i>=0;){if(safe_ids[i][id])return true}}function push(){safe_ids.push(Object.create(null))}function pop(){safe_ids.pop()}function reset_def(def){if(toplevel||!def.global||def.orig[0]instanceof AST_SymbolConst){def.fixed=undefined}else{def.fixed=false}def.references=[];def.should_replace=undefined}function is_modified(node,level,func){var parent=tw.parent(level);if(isLHS(node,parent)||!func&&parent instanceof AST_Call&&parent.expression===node){return true}else if(parent instanceof AST_PropAccess&&parent.expression===node){return!func&&is_modified(parent,level+1)}}});function make_node(ctor,orig,props){if(!props)props={};if(orig){if(!props.start)props.start=orig.start;if(!props.end)props.end=orig.end}return new ctor(props)}function make_node_from_constant(compressor,val,orig){switch(typeof val){case"string":return make_node(AST_String,orig,{value:val});case"number":if(isNaN(val)){return make_node(AST_NaN,orig)}if(1/val<0){return make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Number,orig,{value:-val})})}return make_node(AST_Number,orig,{value:val});case"boolean":return make_node(val?AST_True:AST_False,orig).optimize(compressor);case"undefined":return make_node(AST_Undefined,orig).transform(compressor);default:if(val===null){return make_node(AST_Null,orig,{value:null})}if(val instanceof RegExp){return make_node(AST_RegExp,orig,{value:val})}throw new Error(string_template("Can't handle constant of type: {type}",{type:typeof val}))}}function maintain_this_binding(parent,orig,val){if(parent instanceof AST_Call&&parent.expression===orig){if(val instanceof AST_PropAccess||val instanceof AST_SymbolRef&&val.name==="eval"){return make_node(AST_Seq,orig,{car:make_node(AST_Number,orig,{value:0}),cdr:val})}}return val}function as_statement_array(thing){if(thing===null)return[];if(thing instanceof AST_BlockStatement)return thing.body;if(thing instanceof AST_EmptyStatement)return[];if(thing instanceof AST_Statement)return[thing];throw new Error("Can't convert thing to statement array")}function is_empty(thing){if(thing===null)return true;if(thing instanceof AST_EmptyStatement)return true;if(thing instanceof AST_BlockStatement)return thing.body.length==0;return false}function loop_body(x){if(x instanceof AST_Switch)return x;if(x instanceof AST_For||x instanceof AST_ForIn||x instanceof AST_DWLoop){return x.body instanceof AST_BlockStatement?x.body:x}return x}var readOnlyPrefix=makePredicate("! ~ + - void typeof");function statement_to_expression(stat){if(stat.body instanceof AST_UnaryPrefix&&readOnlyPrefix(stat.body.operator)){return stat.body.expression}else{return stat.body}}function is_iife_call(node){if(node instanceof AST_Call&&!(node instanceof AST_New)){return node.expression instanceof AST_Function||is_iife_call(node.expression)}return false}function tighten_body(statements,compressor){var CHANGED,max_iter=10;do{CHANGED=false;if(compressor.option("angular")){statements=process_for_angular(statements)}statements=eliminate_spurious_blocks(statements);if(compressor.option("dead_code")){statements=eliminate_dead_code(statements,compressor)}if(compressor.option("if_return")){statements=handle_if_return(statements,compressor)}if(compressor.sequences_limit>0){statements=sequencesize(statements,compressor)}if(compressor.option("join_vars")){statements=join_consecutive_vars(statements,compressor)}if(compressor.option("collapse_vars")){statements=collapse_single_use_vars(statements,compressor)}}while(CHANGED&&max_iter-- >0);return statements;function collapse_single_use_vars(statements,compressor){var self=compressor.self();var var_defs_removed=false;for(var stat_index=statements.length;--stat_index>=0;){var stat=statements[stat_index];if(stat instanceof AST_Definitions)continue;[stat,stat.body,stat.alternative,stat.bcatch,stat.bfinally].forEach(function(node){node&&node.body&&collapse_single_use_vars(node.body,compressor)});if(stat_index<=0)break;var prev_stat_index=stat_index-1;var prev_stat=statements[prev_stat_index];if(!(prev_stat instanceof AST_Definitions))continue;var var_defs=prev_stat.definitions;if(var_defs==null)continue;var var_names_seen={};var side_effects_encountered=false;var lvalues_encountered=false;var lvalues={};for(var var_defs_index=var_defs.length;--var_defs_index>=0;){var var_decl=var_defs[var_defs_index];if(var_decl.value==null)break;var var_name=var_decl.name.name;if(!var_name||!var_name.length)break;if(var_name in var_names_seen)break;var_names_seen[var_name]=true;var def=self.find_variable&&self.find_variable(var_name);if(!def||!def.references||def.references.length!==1||var_name=="arguments"){side_effects_encountered=true;continue}var ref=def.references[0];if(ref.scope.uses_eval||ref.scope.uses_with)break;if(var_decl.value.is_constant()){var ctt=new TreeTransformer(function(node){var parent=ctt.parent();if(parent instanceof AST_IterationStatement&&(parent.condition===node||parent.init===node)){return node}if(node===ref)return replace_var(node,parent,true)});stat.transform(ctt);continue}if(side_effects_encountered|=lvalues_encountered)continue;if(ref.scope!==self){side_effects_encountered|=var_decl.value.has_side_effects(compressor);continue}var tw=new TreeWalker(function(node){if(node instanceof AST_SymbolRef&&is_lvalue(node,tw.parent())){lvalues[node.name]=lvalues_encountered=true}});var_decl.value.walk(tw);var unwind=false;var tt=new TreeTransformer(function preorder(node){if(unwind)return node;var parent=tt.parent();if(node instanceof AST_Lambda||node instanceof AST_Try||node instanceof AST_With||node instanceof AST_Case||node instanceof AST_IterationStatement||parent instanceof AST_If&&node!==parent.condition||parent instanceof AST_Conditional&&node!==parent.condition||parent instanceof AST_Binary&&(parent.operator=="&&"||parent.operator=="||")&&node===parent.right||parent instanceof AST_Switch&&node!==parent.expression){return side_effects_encountered=unwind=true,node}},function postorder(node){if(unwind)return node;if(node===ref)return unwind=true,replace_var(node,tt.parent(),false);if(side_effects_encountered|=node.has_side_effects(compressor))return unwind=true,node;if(lvalues_encountered&&node instanceof AST_SymbolRef&&node.name in lvalues){side_effects_encountered=true;return unwind=true,node}});stat.transform(tt)}}if(var_defs_removed)for(var i=statements.length;--i>=0;){if(statements.length>1&&statements[i]instanceof AST_EmptyStatement)statements.splice(i,1)}return statements;function is_lvalue(node,parent){return node instanceof AST_SymbolRef&&isLHS(node,parent)}function replace_var(node,parent,is_constant){if(is_lvalue(node,parent))return node;var value=maintain_this_binding(parent,node,var_decl.value);var_decl.value=null;var_defs.splice(var_defs_index,1);if(var_defs.length===0){statements[prev_stat_index]=make_node(AST_EmptyStatement,self);var_defs_removed=true}stat.reset_opt_flags(compressor);compressor.warn("Collapsing "+(is_constant?"constant":"variable")+" "+var_name+" [{file}:{line},{col}]",node.start);CHANGED=true;return value}}function process_for_angular(statements){function has_inject(comment){return/@ngInject/.test(comment.value)}function make_arguments_names_list(func){return func.argnames.map(function(sym){return make_node(AST_String,sym,{value:sym.name})})}function make_array(orig,elements){return make_node(AST_Array,orig,{elements:elements})}function make_injector(func,name){return make_node(AST_SimpleStatement,func,{body:make_node(AST_Assign,func,{operator:"=",left:make_node(AST_Dot,name,{expression:make_node(AST_SymbolRef,name,name),property:"$inject"}),right:make_array(func,make_arguments_names_list(func))})})}function check_expression(body){if(body&&body.args){body.args.forEach(function(argument,index,array){var comments=argument.start.comments_before;if(argument instanceof AST_Lambda&&comments.length&&has_inject(comments[0])){array[index]=make_array(argument,make_arguments_names_list(argument).concat(argument))}});if(body.expression&&body.expression.expression){check_expression(body.expression.expression)}}}return statements.reduce(function(a,stat){a.push(stat);if(stat.body&&stat.body.args){check_expression(stat.body)}else{var token=stat.start;var comments=token.comments_before;if(comments&&comments.length>0){var last=comments.pop();if(has_inject(last)){if(stat instanceof AST_Defun){a.push(make_injector(stat,stat.name))}else if(stat instanceof AST_Definitions){stat.definitions.forEach(function(def){if(def.value&&def.value instanceof AST_Lambda){a.push(make_injector(def.value,def.name))}})}else{compressor.warn("Unknown statement marked with @ngInject [{file}:{line},{col}]",token)}}}}return a},[])}function eliminate_spurious_blocks(statements){var seen_dirs=[];return statements.reduce(function(a,stat){if(stat instanceof AST_BlockStatement){CHANGED=true;a.push.apply(a,eliminate_spurious_blocks(stat.body))}else if(stat instanceof AST_EmptyStatement){CHANGED=true}else if(stat instanceof AST_Directive){if(seen_dirs.indexOf(stat.value)<0){a.push(stat);seen_dirs.push(stat.value)}else{CHANGED=true}}else{a.push(stat)}return a},[])}function handle_if_return(statements,compressor){var self=compressor.self();var multiple_if_returns=has_multiple_if_returns(statements);var in_lambda=self instanceof AST_Lambda;var ret=[];loop:for(var i=statements.length;--i>=0;){var stat=statements[i];switch(true){case in_lambda&&stat instanceof AST_Return&&!stat.value&&ret.length==0:CHANGED=true;continue loop;case stat instanceof AST_If:if(stat.body instanceof AST_Return){if((in_lambda&&ret.length==0||ret[0]instanceof AST_Return&&!ret[0].value)&&!stat.body.value&&!stat.alternative){CHANGED=true;var cond=make_node(AST_SimpleStatement,stat.condition,{body:stat.condition});ret.unshift(cond);continue loop}if(ret[0]instanceof AST_Return&&stat.body.value&&ret[0].value&&!stat.alternative){CHANGED=true;stat=stat.clone();stat.alternative=ret[0];ret[0]=stat.transform(compressor);continue loop}if(multiple_if_returns&&(ret.length==0||ret[0]instanceof AST_Return)&&stat.body.value&&!stat.alternative&&in_lambda){CHANGED=true;stat=stat.clone();stat.alternative=ret[0]||make_node(AST_Return,stat,{value:null});ret[0]=stat.transform(compressor);continue loop}if(!stat.body.value&&in_lambda){CHANGED=true;stat=stat.clone();stat.condition=stat.condition.negate(compressor);var body=as_statement_array(stat.alternative).concat(ret);var funs=extract_functions_from_statement_array(body);stat.body=make_node(AST_BlockStatement,stat,{body:body});stat.alternative=null;ret=funs.concat([stat.transform(compressor)]);continue loop}if(compressor.option("sequences")&&i>0&&statements[i-1]instanceof AST_If&&statements[i-1].body instanceof AST_Return&&ret.length==1&&in_lambda&&ret[0]instanceof AST_SimpleStatement&&!stat.alternative){CHANGED=true;ret.push(make_node(AST_Return,ret[0],{value:null}).transform(compressor));ret.unshift(stat);continue loop}}var ab=aborts(stat.body);var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab.label):null;if(ab&&(ab instanceof AST_Return&&!ab.value&&in_lambda||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;var body=as_statement_array(stat.body).slice(0,-1);stat=stat.clone();stat.condition=stat.condition.negate(compressor);stat.body=make_node(AST_BlockStatement,stat,{body:as_statement_array(stat.alternative).concat(ret)});stat.alternative=make_node(AST_BlockStatement,stat,{body:body});ret=[stat.transform(compressor)];continue loop}var ab=aborts(stat.alternative);var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab.label):null;if(ab&&(ab instanceof AST_Return&&!ab.value&&in_lambda||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.body=make_node(AST_BlockStatement,stat.body,{body:as_statement_array(stat.body).concat(ret)});stat.alternative=make_node(AST_BlockStatement,stat.alternative,{body:as_statement_array(stat.alternative).slice(0,-1)});ret=[stat.transform(compressor)];continue loop}ret.unshift(stat);break;default:ret.unshift(stat);break}}return ret;function has_multiple_if_returns(statements){var n=0;for(var i=statements.length;--i>=0;){var stat=statements[i];if(stat instanceof AST_If&&stat.body instanceof AST_Return){if(++n>1)return true}}return false}}function eliminate_dead_code(statements,compressor){var has_quit=false;var orig=statements.length;var self=compressor.self();statements=statements.reduce(function(a,stat){if(has_quit){extract_declarations_from_unreachable_code(compressor,stat,a)}else{if(stat instanceof AST_LoopControl){var lct=compressor.loopcontrol_target(stat.label);if(stat instanceof AST_Break&&lct instanceof AST_BlockStatement&&loop_body(lct)===self||stat instanceof AST_Continue&&loop_body(lct)===self){if(stat.label){remove(stat.label.thedef.references,stat)}}else{a.push(stat)}}else{a.push(stat)}if(aborts(stat))has_quit=true}return a},[]);CHANGED=statements.length!=orig;return statements}function sequencesize(statements,compressor){if(statements.length<2)return statements;var seq=[],ret=[];function push_seq(){seq=AST_Seq.from_array(seq);if(seq)ret.push(make_node(AST_SimpleStatement,seq,{body:seq}));seq=[]}statements.forEach(function(stat){if(stat instanceof AST_SimpleStatement){if(seqLength(seq)>=compressor.sequences_limit){push_seq()}seq.push(seq.length>0?statement_to_expression(stat):stat.body)}else{push_seq();ret.push(stat)}});push_seq();ret=sequencesize_2(ret,compressor);CHANGED=ret.length!=statements.length;return ret}function seqLength(a){for(var len=0,i=0;i<a.length;++i){var stat=a[i];if(stat instanceof AST_Seq){len+=stat.len()}else{len++}}return len}function sequencesize_2(statements,compressor){function cons_seq(right){ret.pop();var left=prev.body;if(left instanceof AST_Seq){left.add(right)}else{left=AST_Seq.cons(left,right)}return left.transform(compressor)}var ret=[],prev=null;statements.forEach(function(stat){if(prev){if(stat instanceof AST_For){var opera={};try{prev.body.walk(new TreeWalker(function(node){if(node instanceof AST_Binary&&node.operator=="in")throw opera}));if(stat.init&&!(stat.init instanceof AST_Definitions)){stat.init=cons_seq(stat.init)}else if(!stat.init){stat.init=statement_to_expression(prev);ret.pop()}}catch(ex){if(ex!==opera)throw ex}}else if(stat instanceof AST_If){stat.condition=cons_seq(stat.condition)}else if(stat instanceof AST_With){stat.expression=cons_seq(stat.expression)}else if(stat instanceof AST_Exit&&stat.value){stat.value=cons_seq(stat.value)}else if(stat instanceof AST_Exit){stat.value=cons_seq(make_node(AST_Undefined,stat))}else if(stat instanceof AST_Switch){stat.expression=cons_seq(stat.expression)}}ret.push(stat);prev=stat instanceof AST_SimpleStatement?stat:null});return ret}function join_consecutive_vars(statements,compressor){var prev=null;return statements.reduce(function(a,stat){if(stat instanceof AST_Definitions&&prev&&prev.TYPE==stat.TYPE){prev.definitions=prev.definitions.concat(stat.definitions);CHANGED=true}else if(stat instanceof AST_For&&prev instanceof AST_Var&&(!stat.init||stat.init.TYPE==prev.TYPE)){CHANGED=true;a.pop();if(stat.init){stat.init.definitions=prev.definitions.concat(stat.init.definitions)}else{stat.init=prev}a.push(stat);prev=stat}else{prev=stat;a.push(stat)}return a},[])}}function extract_functions_from_statement_array(statements){var funs=[];for(var i=statements.length-1;i>=0;--i){var stat=statements[i];if(stat instanceof AST_Defun){statements.splice(i,1);funs.unshift(stat)}}return funs}function extract_declarations_from_unreachable_code(compressor,stat,target){if(!(stat instanceof AST_Defun)){compressor.warn("Dropping unreachable code [{file}:{line},{col}]",stat.start)}stat.walk(new TreeWalker(function(node){if(node instanceof AST_Definitions){compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]",node.start);node.remove_initializers();target.push(node);return true}if(node instanceof AST_Defun){target.push(node);return true}if(node instanceof AST_Scope){return true}}))}function is_undefined(node){return node instanceof AST_Undefined||node.is_undefined}(function(def){var unary_bool=["!","delete"];var binary_bool=["in","instanceof","==","!=","===","!==","<","<=",">=",">"];def(AST_Node,return_false);def(AST_UnaryPrefix,function(){return member(this.operator,unary_bool)});def(AST_Binary,function(){return member(this.operator,binary_bool)||(this.operator=="&&"||this.operator=="||")&&this.left.is_boolean()&&this.right.is_boolean()});def(AST_Conditional,function(){return this.consequent.is_boolean()&&this.alternative.is_boolean()});def(AST_Assign,function(){return this.operator=="="&&this.right.is_boolean()});def(AST_Seq,function(){return this.cdr.is_boolean()});def(AST_True,return_true);def(AST_False,return_true)})(function(node,func){node.DEFMETHOD("is_boolean",func)});(function(def){def(AST_Node,return_false);def(AST_Number,return_true);var unary=makePredicate("+ - ~ ++ --");def(AST_Unary,function(){return unary(this.operator)});var binary=makePredicate("- * / % & | ^ << >> >>>");def(AST_Binary,function(compressor){return binary(this.operator)||this.operator=="+"&&this.left.is_number(compressor)&&this.right.is_number(compressor)});var assign=makePredicate("-= *= /= %= &= |= ^= <<= >>= >>>=");def(AST_Assign,function(compressor){return assign(this.operator)||this.right.is_number(compressor)});def(AST_Seq,function(compressor){return this.cdr.is_number(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_number(compressor)&&this.alternative.is_number(compressor)})})(function(node,func){node.DEFMETHOD("is_number",func)});(function(def){def(AST_Node,return_false);def(AST_String,return_true);def(AST_UnaryPrefix,function(){return this.operator=="typeof"});def(AST_Binary,function(compressor){return this.operator=="+"&&(this.left.is_string(compressor)||this.right.is_string(compressor))});def(AST_Assign,function(compressor){return(this.operator=="="||this.operator=="+=")&&this.right.is_string(compressor)});def(AST_Seq,function(compressor){return this.cdr.is_string(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_string(compressor)&&this.alternative.is_string(compressor)})})(function(node,func){node.DEFMETHOD("is_string",func)});function isLHS(node,parent){return parent instanceof AST_Unary&&(parent.operator=="++"||parent.operator=="--")||parent instanceof AST_Assign&&parent.left===node}(function(def){AST_Node.DEFMETHOD("resolve_defines",function(compressor){if(!compressor.option("global_defs"))return;var def=this._find_defs(compressor,"");if(def){var node,parent=this,level=0;do{node=parent;parent=compressor.parent(level++)}while(parent instanceof AST_PropAccess&&parent.expression===node);if(isLHS(node,parent)){compressor.warn("global_defs "+this.print_to_string()+" redefined [{file}:{line},{col}]",this.start)}else{return def}}});function to_node(compressor,value,orig){if(value instanceof AST_Node)return make_node(value.CTOR,orig,value);if(Array.isArray(value))return make_node(AST_Array,orig,{elements:value.map(function(value){return to_node(compressor,value,orig)})});if(value&&typeof value=="object"){var props=[];for(var key in value){props.push(make_node(AST_ObjectKeyVal,orig,{key:key,value:to_node(compressor,value[key],orig)}))}return make_node(AST_Object,orig,{properties:props})}return make_node_from_constant(compressor,value,orig)}def(AST_Node,noop);def(AST_Dot,function(compressor,suffix){return this.expression._find_defs(compressor,suffix+"."+this.property)});def(AST_SymbolRef,function(compressor,suffix){if(!this.global())return;var name;var defines=compressor.option("global_defs");if(defines&&HOP(defines,name=this.name+suffix)){var node=to_node(compressor,defines[name],this);var top=compressor.find_parent(AST_Toplevel);node.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef){node.scope=top;node.thedef=top.def_global(node)}}));return node}})})(function(node,func){node.DEFMETHOD("_find_defs",func)});function best_of(ast1,ast2){return ast1.print_to_string().length>ast2.print_to_string().length?ast2:ast1}function best_of_statement(ast1,ast2){return best_of(make_node(AST_SimpleStatement,ast1,{body:ast1}),make_node(AST_SimpleStatement,ast2,{body:ast2})).body}(function(def){AST_Node.DEFMETHOD("evaluate",function(compressor){if(!compressor.option("evaluate"))return[this];var val;try{val=this._eval(compressor)}catch(ex){if(ex!==def)throw ex;return[this]}var node;try{node=make_node_from_constant(compressor,val,this)}catch(ex){return[this]}return[best_of(node,this),val]});var unaryPrefix=makePredicate("! ~ - +");AST_Node.DEFMETHOD("is_constant",function(){if(this instanceof AST_Constant){return!(this instanceof AST_RegExp)}else{return this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant&&unaryPrefix(this.operator)}});AST_Node.DEFMETHOD("constant_value",function(compressor){if(this instanceof AST_Constant&&!(this instanceof AST_RegExp)){return this.value}if(this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant)switch(this.operator){case"!":return!this.expression.value;case"~":return~this.expression.value;case"-":return-this.expression.value;case"+":return+this.expression.value;default:throw new Error(string_template("Cannot evaluate unary expression {value}",{value:this.print_to_string()}))}var result=this.evaluate(compressor);if(result.length>1){return result[1]}throw new Error(string_template("Cannot evaluate constant [{file}:{line},{col}]",this.start))});def(AST_Statement,function(){throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]",this.start))});def(AST_Lambda,function(){throw def});function ev(node,compressor){if(!compressor)throw new Error("Compressor must be passed");return node._eval(compressor)}def(AST_Node,function(){throw def});def(AST_Constant,function(){return this.getValue()});def(AST_Array,function(compressor){if(compressor.option("unsafe")){return this.elements.map(function(element){return ev(element,compressor)})}throw def});def(AST_Object,function(compressor){if(compressor.option("unsafe")){var val={};for(var i=0,len=this.properties.length;i<len;i++){var prop=this.properties[i];var key=prop.key;if(key instanceof AST_Symbol){key=key.name}else if(key instanceof AST_Node){key=ev(key,compressor)}if(typeof Object.prototype[key]==="function"){throw def}val[key]=ev(prop.value,compressor)}return val}throw def});def(AST_UnaryPrefix,function(compressor){var e=this.expression;switch(this.operator){case"!":return!ev(e,compressor);case"typeof":if(e instanceof AST_Function)return typeof function(){};e=ev(e,compressor);if(e instanceof RegExp)throw def;return typeof e;case"void":return void ev(e,compressor);case"~":return~ev(e,compressor);case"-":return-ev(e,compressor);case"+":return+ev(e,compressor)}throw def});def(AST_Binary,function(c){var left=this.left,right=this.right,result;switch(this.operator){case"&&":result=ev(left,c)&&ev(right,c);break;case"||":result=ev(left,c)||ev(right,c);break;case"|":result=ev(left,c)|ev(right,c);break;case"&":result=ev(left,c)&ev(right,c);break;case"^":result=ev(left,c)^ev(right,c);break;case"+":result=ev(left,c)+ev(right,c);break;case"*":result=ev(left,c)*ev(right,c);break;case"/":result=ev(left,c)/ev(right,c);break;case"%":result=ev(left,c)%ev(right,c);break;case"-":result=ev(left,c)-ev(right,c);break;case"<<":result=ev(left,c)<<ev(right,c);break;case">>":result=ev(left,c)>>ev(right,c);break;case">>>":result=ev(left,c)>>>ev(right,c);break;case"==":result=ev(left,c)==ev(right,c);break;case"===":result=ev(left,c)===ev(right,c);break;case"!=":result=ev(left,c)!=ev(right,c);break;case"!==":result=ev(left,c)!==ev(right,c);break;case"<":result=ev(left,c)<ev(right,c);break;case"<=":result=ev(left,c)<=ev(right,c);break;case">":result=ev(left,c)>ev(right,c);break;case">=":result=ev(left,c)>=ev(right,c);break;default:throw def}if(isNaN(result)&&c.find_parent(AST_With)){throw def}return result});def(AST_Conditional,function(compressor){return ev(this.condition,compressor)?ev(this.consequent,compressor):ev(this.alternative,compressor)});def(AST_SymbolRef,function(compressor){if(this._evaluating)throw def;this._evaluating=true;try{var d=this.definition();if(compressor.option("reduce_vars")&&d.fixed){if(compressor.option("unsafe")){if(!HOP(d.fixed,"_evaluated")){d.fixed._evaluated=ev(d.fixed,compressor)}return d.fixed._evaluated}return ev(d.fixed,compressor)}}finally{this._evaluating=false}throw def});def(AST_PropAccess,function(compressor){if(compressor.option("unsafe")){var key=this.property;if(key instanceof AST_Node){key=ev(key,compressor)}var val=ev(this.expression,compressor);if(val&&HOP(val,key)){return val[key]}}throw def})})(function(node,func){node.DEFMETHOD("_eval",func)});(function(def){function basic_negation(exp){return make_node(AST_UnaryPrefix,exp,{operator:"!",expression:exp})}function best(orig,alt,first_in_statement){var negated=basic_negation(orig);if(first_in_statement){var stat=make_node(AST_SimpleStatement,alt,{body:alt});return best_of(negated,stat)===stat?alt:negated}return best_of(negated,alt)}def(AST_Node,function(){return basic_negation(this)});def(AST_Statement,function(){throw new Error("Cannot negate a statement")});def(AST_Function,function(){return basic_negation(this)});def(AST_UnaryPrefix,function(){if(this.operator=="!")return this.expression;return basic_negation(this)});def(AST_Seq,function(compressor){var self=this.clone()
 ;self.cdr=self.cdr.negate(compressor);return self});def(AST_Conditional,function(compressor,first_in_statement){var self=this.clone();self.consequent=self.consequent.negate(compressor);self.alternative=self.alternative.negate(compressor);return best(this,self,first_in_statement)});def(AST_Binary,function(compressor,first_in_statement){var self=this.clone(),op=this.operator;if(compressor.option("unsafe_comps")){switch(op){case"<=":self.operator=">";return self;case"<":self.operator=">=";return self;case">=":self.operator="<";return self;case">":self.operator="<=";return self}}switch(op){case"==":self.operator="!=";return self;case"!=":self.operator="==";return self;case"===":self.operator="!==";return self;case"!==":self.operator="===";return self;case"&&":self.operator="||";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement);case"||":self.operator="&&";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement)}return basic_negation(this)})})(function(node,func){node.DEFMETHOD("negate",function(compressor,first_in_statement){return func.call(this,compressor,first_in_statement)})});AST_Call.DEFMETHOD("has_pure_annotation",function(compressor){if(!compressor.option("side_effects"))return false;if(this.pure!==undefined)return this.pure;var pure=false;var comments,last_comment;if(this.start&&(comments=this.start.comments_before)&&comments.length&&/[@#]__PURE__/.test((last_comment=comments[comments.length-1]).value)){pure=last_comment}return this.pure=pure});(function(def){def(AST_Node,return_true);def(AST_EmptyStatement,return_false);def(AST_Constant,return_false);def(AST_This,return_false);def(AST_Call,function(compressor){if(!this.has_pure_annotation(compressor)&&compressor.pure_funcs(this))return true;for(var i=this.args.length;--i>=0;){if(this.args[i].has_side_effects(compressor))return true}return false});def(AST_Block,function(compressor){for(var i=this.body.length;--i>=0;){if(this.body[i].has_side_effects(compressor))return true}return false});def(AST_SimpleStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_Defun,return_true);def(AST_Function,return_false);def(AST_Binary,function(compressor){return this.left.has_side_effects(compressor)||this.right.has_side_effects(compressor)});def(AST_Assign,return_true);def(AST_Conditional,function(compressor){return this.condition.has_side_effects(compressor)||this.consequent.has_side_effects(compressor)||this.alternative.has_side_effects(compressor)});def(AST_Unary,function(compressor){return this.operator=="delete"||this.operator=="++"||this.operator=="--"||this.expression.has_side_effects(compressor)});def(AST_SymbolRef,function(compressor){return this.global()&&this.undeclared()});def(AST_Object,function(compressor){for(var i=this.properties.length;--i>=0;)if(this.properties[i].has_side_effects(compressor))return true;return false});def(AST_ObjectProperty,function(compressor){return this.value.has_side_effects(compressor)});def(AST_Array,function(compressor){for(var i=this.elements.length;--i>=0;)if(this.elements[i].has_side_effects(compressor))return true;return false});def(AST_Dot,function(compressor){if(!compressor.option("pure_getters"))return true;return this.expression.has_side_effects(compressor)});def(AST_Sub,function(compressor){if(!compressor.option("pure_getters"))return true;return this.expression.has_side_effects(compressor)||this.property.has_side_effects(compressor)});def(AST_PropAccess,function(compressor){return!compressor.option("pure_getters")});def(AST_Seq,function(compressor){return this.car.has_side_effects(compressor)||this.cdr.has_side_effects(compressor)})})(function(node,func){node.DEFMETHOD("has_side_effects",func)});function aborts(thing){return thing&&thing.aborts()}(function(def){def(AST_Statement,function(){return null});def(AST_Jump,function(){return this});function block_aborts(){var n=this.body.length;return n>0&&aborts(this.body[n-1])}def(AST_BlockStatement,block_aborts);def(AST_SwitchBranch,block_aborts);def(AST_If,function(){return this.alternative&&aborts(this.body)&&aborts(this.alternative)&&this})})(function(node,func){node.DEFMETHOD("aborts",func)});OPT(AST_Directive,function(self,compressor){if(compressor.has_directive(self.value)==="up"){return make_node(AST_EmptyStatement,self)}return self});OPT(AST_Debugger,function(self,compressor){if(compressor.option("drop_debugger"))return make_node(AST_EmptyStatement,self);return self});OPT(AST_LabeledStatement,function(self,compressor){if(self.body instanceof AST_Break&&compressor.loopcontrol_target(self.body.label)===self.body){return make_node(AST_EmptyStatement,self)}return self.label.references.length==0?self.body:self});OPT(AST_Block,function(self,compressor){self.body=tighten_body(self.body,compressor);return self});OPT(AST_BlockStatement,function(self,compressor){self.body=tighten_body(self.body,compressor);switch(self.body.length){case 1:return self.body[0];case 0:return make_node(AST_EmptyStatement,self)}return self});AST_Scope.DEFMETHOD("drop_unused",function(compressor){var self=this;if(compressor.has_directive("use asm"))return self;var toplevel=compressor.option("toplevel");if(compressor.option("unused")&&(!(self instanceof AST_Toplevel)||toplevel)&&!self.uses_eval&&!self.uses_with){var assign_as_unused=!/keep_assign/.test(compressor.option("unused"));var drop_funcs=/funcs/.test(toplevel);var drop_vars=/vars/.test(toplevel);if(!(self instanceof AST_Toplevel)||toplevel==true){drop_funcs=drop_vars=true}var in_use=[];var in_use_ids=Object.create(null);if(self instanceof AST_Toplevel&&compressor.top_retain){self.variables.each(function(def){if(compressor.top_retain(def)&&!(def.id in in_use_ids)){in_use_ids[def.id]=true;in_use.push(def)}})}var initializations=new Dictionary;var scope=this;var tw=new TreeWalker(function(node,descend){if(node!==self){if(node instanceof AST_Defun){if(!drop_funcs&&scope===self){var node_def=node.name.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}initializations.add(node.name.name,node);return true}if(node instanceof AST_Definitions&&scope===self){node.definitions.forEach(function(def){if(!drop_vars){var node_def=def.name.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}if(def.value){initializations.add(def.name.name,def.value);if(def.value.has_side_effects(compressor)){def.value.walk(tw)}}});return true}if(assign_as_unused&&node instanceof AST_Assign&&node.operator=="="&&node.left instanceof AST_SymbolRef&&scope===self){node.right.walk(tw);return true}if(node instanceof AST_SymbolRef){var node_def=node.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}return true}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend();scope=save_scope;return true}}});self.walk(tw);for(var i=0;i<in_use.length;++i){in_use[i].orig.forEach(function(decl){var init=initializations.get(decl.name);if(init)init.forEach(function(init){var tw=new TreeWalker(function(node){if(node instanceof AST_SymbolRef){var node_def=node.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}});init.walk(tw)})})}var tt=new TreeTransformer(function before(node,descend,in_list){if(node instanceof AST_Function&&node.name&&!compressor.option("keep_fnames")&&!(node.name.definition().id in in_use_ids)){node.name=null}if(node instanceof AST_Lambda&&!(node instanceof AST_Accessor)){var trim=!compressor.option("keep_fargs");for(var a=node.argnames,i=a.length;--i>=0;){var sym=a[i];if(!(sym.definition().id in in_use_ids)){sym.__unused=true;if(trim){a.pop();compressor.warn("Dropping unused function argument {name} [{file}:{line},{col}]",{name:sym.name,file:sym.start.file,line:sym.start.line,col:sym.start.col})}}else{trim=false}}}if(drop_funcs&&node instanceof AST_Defun&&node!==self){if(!(node.name.definition().id in in_use_ids)){compressor.warn("Dropping unused function {name} [{file}:{line},{col}]",{name:node.name.name,file:node.name.start.file,line:node.name.start.line,col:node.name.start.col});return make_node(AST_EmptyStatement,node)}return node}if(drop_vars&&node instanceof AST_Definitions&&!(tt.parent()instanceof AST_ForIn)){var def=node.definitions.filter(function(def){if(def.value)def.value=def.value.transform(tt);if(def.name.definition().id in in_use_ids)return true;var w={name:def.name.name,file:def.name.start.file,line:def.name.start.line,col:def.name.start.col};if(def.value&&(def._unused_side_effects=def.value.drop_side_effect_free(compressor))){compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]",w);return true}compressor.warn("Dropping unused variable {name} [{file}:{line},{col}]",w);return false});def=mergeSort(def,function(a,b){if(!a.value&&b.value)return-1;if(!b.value&&a.value)return 1;return 0});var side_effects=[];for(var i=0;i<def.length;){var x=def[i];if(x._unused_side_effects){side_effects.push(x._unused_side_effects);def.splice(i,1)}else{if(side_effects.length>0){side_effects.push(x.value);x.value=AST_Seq.from_array(side_effects);side_effects=[]}++i}}if(side_effects.length>0){side_effects=make_node(AST_BlockStatement,node,{body:[make_node(AST_SimpleStatement,node,{body:AST_Seq.from_array(side_effects)})]})}else{side_effects=null}if(def.length==0&&!side_effects){return make_node(AST_EmptyStatement,node)}if(def.length==0){return in_list?MAP.splice(side_effects.body):side_effects}node.definitions=def;if(side_effects){side_effects.body.unshift(node);return in_list?MAP.splice(side_effects.body):side_effects}return node}if(drop_vars&&assign_as_unused&&node instanceof AST_Assign&&node.operator=="="&&node.left instanceof AST_SymbolRef){var def=node.left.definition();if(!(def.id in in_use_ids)&&self.variables.get(def.name)===def){return maintain_this_binding(tt.parent(),node,node.right.transform(tt))}}if(node instanceof AST_For){descend(node,this);if(node.init instanceof AST_BlockStatement){var body=node.init.body.slice(0,-1);node.init=node.init.body.slice(-1)[0].body;body.push(node);return in_list?MAP.splice(body):make_node(AST_BlockStatement,node,{body:body})}}if(node instanceof AST_Scope&&node!==self)return node});self.transform(tt)}});AST_Scope.DEFMETHOD("hoist_declarations",function(compressor){var self=this;if(compressor.has_directive("use asm"))return self;var hoist_funs=compressor.option("hoist_funs");var hoist_vars=compressor.option("hoist_vars");if(hoist_funs||hoist_vars){var dirs=[];var hoisted=[];var vars=new Dictionary,vars_found=0,var_decl=0;self.walk(new TreeWalker(function(node){if(node instanceof AST_Scope&&node!==self)return true;if(node instanceof AST_Var){++var_decl;return true}}));hoist_vars=hoist_vars&&var_decl>1;var tt=new TreeTransformer(function before(node){if(node!==self){if(node instanceof AST_Directive){dirs.push(node);return make_node(AST_EmptyStatement,node)}if(node instanceof AST_Defun&&hoist_funs){hoisted.push(node);return make_node(AST_EmptyStatement,node)}if(node instanceof AST_Var&&hoist_vars){node.definitions.forEach(function(def){vars.set(def.name.name,def);++vars_found});var seq=node.to_assignments();var p=tt.parent();if(p instanceof AST_ForIn&&p.init===node){if(seq==null){var def=node.definitions[0].name;return make_node(AST_SymbolRef,def,def)}return seq}if(p instanceof AST_For&&p.init===node){return seq}if(!seq)return make_node(AST_EmptyStatement,node);return make_node(AST_SimpleStatement,node,{body:seq})}if(node instanceof AST_Scope)return node}});self=self.transform(tt);if(vars_found>0){var defs=[];vars.each(function(def,name){if(self instanceof AST_Lambda&&find_if(function(x){return x.name==def.name.name},self.argnames)){vars.del(name)}else{def=def.clone();def.value=null;defs.push(def);vars.set(name,def)}});if(defs.length>0){for(var i=0;i<self.body.length;){if(self.body[i]instanceof AST_SimpleStatement){var expr=self.body[i].body,sym,assign;if(expr instanceof AST_Assign&&expr.operator=="="&&(sym=expr.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=expr.right;remove(defs,def);defs.push(def);self.body.splice(i,1);continue}if(expr instanceof AST_Seq&&(assign=expr.car)instanceof AST_Assign&&assign.operator=="="&&(sym=assign.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=assign.right;remove(defs,def);defs.push(def);self.body[i].body=expr.cdr;continue}}if(self.body[i]instanceof AST_EmptyStatement){self.body.splice(i,1);continue}if(self.body[i]instanceof AST_BlockStatement){var tmp=[i,1].concat(self.body[i].body);self.body.splice.apply(self.body,tmp);continue}break}defs=make_node(AST_Var,self,{definitions:defs});hoisted.push(defs)}}self.body=dirs.concat(hoisted,self.body)}return self});(function(def){function return_this(){return this}function return_null(){return null}function trim(nodes,compressor,first_in_statement){var ret=[],changed=false;for(var i=0,len=nodes.length;i<len;i++){var node=nodes[i].drop_side_effect_free(compressor,first_in_statement);changed|=node!==nodes[i];if(node){ret.push(node);first_in_statement=false}}return changed?ret.length?ret:null:nodes}def(AST_Node,return_this);def(AST_Constant,return_null);def(AST_This,return_null);def(AST_Call,function(compressor,first_in_statement){if(!this.has_pure_annotation(compressor)&&compressor.pure_funcs(this)){if(this.expression instanceof AST_Function&&(!this.expression.name||!this.expression.name.definition().references.length)){var node=this.clone();node.expression=node.expression.process_expression(false);return node}return this}if(this.pure){compressor.warn("Dropping __PURE__ call [{file}:{line},{col}]",this.start);this.pure.value=this.pure.value.replace(/[@#]__PURE__/g," ")}var args=trim(this.args,compressor,first_in_statement);return args&&AST_Seq.from_array(args)});def(AST_Function,return_null);def(AST_Binary,function(compressor,first_in_statement){var right=this.right.drop_side_effect_free(compressor);if(!right)return this.left.drop_side_effect_free(compressor,first_in_statement);switch(this.operator){case"&&":case"||":var node=this.clone();node.right=right;return node;default:var left=this.left.drop_side_effect_free(compressor,first_in_statement);if(!left)return this.right.drop_side_effect_free(compressor,first_in_statement);return make_node(AST_Seq,this,{car:left,cdr:right})}});def(AST_Assign,return_this);def(AST_Conditional,function(compressor){var consequent=this.consequent.drop_side_effect_free(compressor);var alternative=this.alternative.drop_side_effect_free(compressor);if(consequent===this.consequent&&alternative===this.alternative)return this;if(!consequent)return alternative?make_node(AST_Binary,this,{operator:"||",left:this.condition,right:alternative}):this.condition.drop_side_effect_free(compressor);if(!alternative)return make_node(AST_Binary,this,{operator:"&&",left:this.condition,right:consequent});var node=this.clone();node.consequent=consequent;node.alternative=alternative;return node});def(AST_Unary,function(compressor,first_in_statement){switch(this.operator){case"delete":case"++":case"--":return this;case"typeof":if(this.expression instanceof AST_SymbolRef)return null;default:var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(first_in_statement&&this instanceof AST_UnaryPrefix&&is_iife_call(expression)){if(expression===this.expression&&this.operator.length===1)return this;return make_node(AST_UnaryPrefix,this,{operator:this.operator.length===1?this.operator:"!",expression:expression})}return expression}});def(AST_SymbolRef,function(){return this.undeclared()?this:null});def(AST_Object,function(compressor,first_in_statement){var values=trim(this.properties,compressor,first_in_statement);return values&&AST_Seq.from_array(values)});def(AST_ObjectProperty,function(compressor,first_in_statement){return this.value.drop_side_effect_free(compressor,first_in_statement)});def(AST_Array,function(compressor,first_in_statement){var values=trim(this.elements,compressor,first_in_statement);return values&&AST_Seq.from_array(values)});def(AST_Dot,function(compressor,first_in_statement){if(!compressor.option("pure_getters"))return this;return this.expression.drop_side_effect_free(compressor,first_in_statement)});def(AST_Sub,function(compressor,first_in_statement){if(!compressor.option("pure_getters"))return this;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(!expression)return this.property.drop_side_effect_free(compressor,first_in_statement);var property=this.property.drop_side_effect_free(compressor);if(!property)return expression;return make_node(AST_Seq,this,{car:expression,cdr:property})});def(AST_Seq,function(compressor){var cdr=this.cdr.drop_side_effect_free(compressor);if(cdr===this.cdr)return this;if(!cdr)return this.car;return make_node(AST_Seq,this,{car:this.car,cdr:cdr})})})(function(node,func){node.DEFMETHOD("drop_side_effect_free",func)});OPT(AST_SimpleStatement,function(self,compressor){if(compressor.option("side_effects")){var body=self.body;var node=body.drop_side_effect_free(compressor,true);if(!node){compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]",self.start);return make_node(AST_EmptyStatement,self)}if(node!==body){return make_node(AST_SimpleStatement,self,{body:node})}}return self});OPT(AST_DWLoop,function(self,compressor){var cond=self.condition.evaluate(compressor);self.condition=cond[0];if(!compressor.option("loops"))return self;if(cond.length>1){if(cond[1]){return make_node(AST_For,self,{body:self.body})}else if(self instanceof AST_While){if(compressor.option("dead_code")){var a=[];extract_declarations_from_unreachable_code(compressor,self.body,a);return make_node(AST_BlockStatement,self,{body:a})}}else{return self}}if(self instanceof AST_While){return make_node(AST_For,self,self).transform(compressor)}return self});function if_break_in_loop(self,compressor){function drop_it(rest){rest=as_statement_array(rest);if(self.body instanceof AST_BlockStatement){self.body=self.body.clone();self.body.body=rest.concat(self.body.body.slice(1));self.body=self.body.transform(compressor)}else{self.body=make_node(AST_BlockStatement,self.body,{body:rest}).transform(compressor)}if_break_in_loop(self,compressor)}var first=self.body instanceof AST_BlockStatement?self.body.body[0]:self.body;if(first instanceof AST_If){if(first.body instanceof AST_Break&&compressor.loopcontrol_target(first.body.label)===self){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition.negate(compressor)})}else{self.condition=first.condition.negate(compressor)}drop_it(first.alternative)}else if(first.alternative instanceof AST_Break&&compressor.loopcontrol_target(first.alternative.label)===self){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition})}else{self.condition=first.condition}drop_it(first.body)}}}OPT(AST_For,function(self,compressor){var cond=self.condition;if(cond){cond=cond.evaluate(compressor);self.condition=cond[0]}if(!compressor.option("loops"))return self;if(cond){if(cond.length>1&&!cond[1]){if(compressor.option("dead_code")){var a=[];if(self.init instanceof AST_Statement){a.push(self.init)}else if(self.init){a.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}extract_declarations_from_unreachable_code(compressor,self.body,a);return make_node(AST_BlockStatement,self,{body:a})}}}if_break_in_loop(self,compressor);return self});OPT(AST_If,function(self,compressor){if(is_empty(self.alternative))self.alternative=null;if(!compressor.option("conditionals"))return self;var cond=self.condition.evaluate(compressor);self.condition=cond[0];if(cond.length>1){if(cond[1]){compressor.warn("Condition always true [{file}:{line},{col}]",self.condition.start);if(compressor.option("dead_code")){var a=[];if(self.alternative){extract_declarations_from_unreachable_code(compressor,self.alternative,a)}a.push(self.body);return make_node(AST_BlockStatement,self,{body:a}).transform(compressor)}}else{compressor.warn("Condition always false [{file}:{line},{col}]",self.condition.start);if(compressor.option("dead_code")){var a=[];extract_declarations_from_unreachable_code(compressor,self.body,a);if(self.alternative)a.push(self.alternative);return make_node(AST_BlockStatement,self,{body:a}).transform(compressor)}}}var negated=self.condition.negate(compressor);var self_condition_length=self.condition.print_to_string().length;var negated_length=negated.print_to_string().length;var negated_is_best=negated_length<self_condition_length;if(self.alternative&&negated_is_best){negated_is_best=false;self.condition=negated;var tmp=self.body;self.body=self.alternative||make_node(AST_EmptyStatement,self);self.alternative=tmp}if(is_empty(self.body)&&is_empty(self.alternative)){return make_node(AST_SimpleStatement,self.condition,{body:self.condition}).transform(compressor)}if(self.body instanceof AST_SimpleStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Conditional,self,{condition:self.condition,consequent:statement_to_expression(self.body),alternative:statement_to_expression(self.alternative)})}).transform(compressor)}if(is_empty(self.alternative)&&self.body instanceof AST_SimpleStatement){if(self_condition_length===negated_length&&!negated_is_best&&self.condition instanceof AST_Binary&&self.condition.operator=="||"){negated_is_best=true}if(negated_is_best)return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:negated,right:statement_to_expression(self.body)})}).transform(compressor);return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"&&",left:self.condition,right:statement_to_expression(self.body)})}).transform(compressor)}if(self.body instanceof AST_EmptyStatement&&self.alternative&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:self.condition,right:statement_to_expression(self.alternative)})}).transform(compressor)}if(self.body instanceof AST_Exit&&self.alternative instanceof AST_Exit&&self.body.TYPE==self.alternative.TYPE){return make_node(self.body.CTOR,self,{value:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.value||make_node(AST_Undefined,self.body),alternative:self.alternative.value||make_node(AST_Undefined,self.alternative)})}).transform(compressor)}if(self.body instanceof AST_If&&!self.body.alternative&&!self.alternative){self.condition=make_node(AST_Binary,self.condition,{operator:"&&",left:self.condition,right:self.body.condition}).transform(compressor);self.body=self.body.body}if(aborts(self.body)){if(self.alternative){var alt=self.alternative;self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,alt]}).transform(compressor)}}if(aborts(self.alternative)){var body=self.body;self.body=self.alternative;self.condition=negated_is_best?negated:self.condition.negate(compressor);self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,body]}).transform(compressor)}return self});OPT(AST_Switch,function(self,compressor){if(self.body.length==0&&compressor.option("conditionals")){return make_node(AST_SimpleStatement,self,{body:self.expression}).transform(compressor)}for(;;){var last_branch=self.body[self.body.length-1];if(last_branch){var stat=last_branch.body[last_branch.body.length-1];if(stat instanceof AST_Break&&loop_body(compressor.loopcontrol_target(stat.label))===self)last_branch.body.pop();if(last_branch instanceof AST_Default&&last_branch.body.length==0){self.body.pop();continue}}break}var exp=self.expression.evaluate(compressor);out:if(exp.length==2)try{self.expression=exp[0];if(!compressor.option("dead_code"))break out;var value=exp[1];var in_if=false;var in_block=false;var started=false;var stopped=false;var ruined=false;var tt=new TreeTransformer(function(node,descend,in_list){if(node instanceof AST_Lambda||node instanceof AST_SimpleStatement){return node}else if(node instanceof AST_Switch&&node===self){node=node.clone();descend(node,this);return ruined?node:make_node(AST_BlockStatement,node,{body:node.body.reduce(function(a,branch){return a.concat(branch.body)},[])}).transform(compressor)}else if(node instanceof AST_If||node instanceof AST_Try){var save=in_if;in_if=!in_block;descend(node,this);in_if=save;return node}else if(node instanceof AST_StatementWithBody||node instanceof AST_Switch){var save=in_block;in_block=true;descend(node,this);in_block=save;return node}else if(node instanceof AST_Break&&this.loopcontrol_target(node.label)===self){if(in_if){ruined=true;return node}if(in_block)return node;stopped=true;return in_list?MAP.skip:make_node(AST_EmptyStatement,node)}else if(node instanceof AST_SwitchBranch&&this.parent()===self){if(stopped)return MAP.skip;if(node instanceof AST_Case){var exp=node.expression.evaluate(compressor);if(exp.length<2){throw self}if(exp[1]===value||started){started=true;if(aborts(node))stopped=true;descend(node,this);return node}return MAP.skip}descend(node,this);return node}});tt.stack=compressor.stack.slice();self=self.transform(tt)}catch(ex){if(ex!==self)throw ex}return self});OPT(AST_Case,function(self,compressor){self.body=tighten_body(self.body,compressor);return self});OPT(AST_Try,function(self,compressor){self.body=tighten_body(self.body,compressor);return self});AST_Definitions.DEFMETHOD("remove_initializers",function(){this.definitions.forEach(function(def){def.value=null})});AST_Definitions.DEFMETHOD("to_assignments",function(){var assignments=this.definitions.reduce(function(a,def){if(def.value){var name=make_node(AST_SymbolRef,def.name,def.name);a.push(make_node(AST_Assign,def,{operator:"=",left:name,right:def.value}))}return a},[]);if(assignments.length==0)return null;return AST_Seq.from_array(assignments)});OPT(AST_Definitions,function(self,compressor){if(self.definitions.length==0)return make_node(AST_EmptyStatement,self);return self});OPT(AST_Call,function(self,compressor){var exp=self.expression;if(compressor.option("reduce_vars")&&exp instanceof AST_SymbolRef){var def=exp.definition();if(def.fixed instanceof AST_Defun){def.fixed=make_node(AST_Function,def.fixed,def.fixed).clone(true)}if(def.fixed instanceof AST_Function){exp=def.fixed;if(compressor.option("unused")&&def.references.length==1&&!(def.scope.uses_arguments&&def.orig[0]instanceof AST_SymbolFunarg)&&!def.scope.uses_eval&&compressor.find_parent(AST_Scope)===def.scope){self.expression=exp}}}if(compressor.option("unused")&&exp instanceof AST_Function&&!exp.uses_arguments&&!exp.uses_eval){var pos=0,last=0;for(var i=0,len=self.args.length;i<len;i++){var trim=i>=exp.argnames.length;if(trim||exp.argnames[i].__unused){var node=self.args[i].drop_side_effect_free(compressor);if(node){self.args[pos++]=node}else if(!trim){self.args[pos++]=make_node(AST_Number,self.args[i],{value:0});continue}}else{self.args[pos++]=self.args[i]}last=pos}self.args.length=last}if(compressor.option("unsafe")){if(exp instanceof AST_SymbolRef&&exp.undeclared()){switch(exp.name){case"Array":if(self.args.length!=1){return make_node(AST_Array,self,{elements:self.args}).transform(compressor)}break;case"Object":if(self.args.length==0){return make_node(AST_Object,self,{properties:[]})}break;case"String":if(self.args.length==0)return make_node(AST_String,self,{value:""});if(self.args.length<=1)return make_node(AST_Binary,self,{left:self.args[0],operator:"+",right:make_node(AST_String,self,{value:""})}).transform(compressor);break;case"Number":if(self.args.length==0)return make_node(AST_Number,self,{value:0});if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"+"}).transform(compressor);case"Boolean":if(self.args.length==0)return make_node(AST_False,self);if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"!"}),operator:"!"}).transform(compressor);break;case"Function":if(self.args.length==0)return make_node(AST_Function,self,{argnames:[],body:[]});if(all(self.args,function(x){return x instanceof AST_String})){try{var code="(function("+self.args.slice(0,-1).map(function(arg){return arg.value}).join(",")+"){"+self.args[self.args.length-1].value+"})()";var ast=parse(code);ast.figure_out_scope({screw_ie8:compressor.option("screw_ie8")});var comp=new Compressor(compressor.options);ast=ast.transform(comp);ast.figure_out_scope({screw_ie8:compressor.option("screw_ie8")});ast.mangle_names();var fun;try{ast.walk(new TreeWalker(function(node){if(node instanceof AST_Lambda){fun=node;throw ast}}))}catch(ex){if(ex!==ast)throw ex}if(!fun)return self;var args=fun.argnames.map(function(arg,i){return make_node(AST_String,self.args[i],{value:arg.print_to_string()})});var code=OutputStream();AST_BlockStatement.prototype._codegen.call(fun,fun,code);code=code.toString().replace(/^\{|\}$/g,"");args.push(make_node(AST_String,self.args[self.args.length-1],{value:code}));self.args=args;return self}catch(ex){if(ex instanceof JS_Parse_Error){compressor.warn("Error parsing code passed to new Function [{file}:{line},{col}]",self.args[self.args.length-1].start);compressor.warn(ex.toString())}else{console.log(ex);throw ex}}}break}}else if(exp instanceof AST_Dot&&exp.property=="toString"&&self.args.length==0){return make_node(AST_Binary,self,{left:make_node(AST_String,self,{value:""}),operator:"+",right:exp.expression}).transform(compressor)}else if(exp instanceof AST_Dot&&exp.expression instanceof AST_Array&&exp.property=="join")EXIT:{var separator;if(self.args.length>0){separator=self.args[0].evaluate(compressor);if(separator.length<2)break EXIT;separator=separator[1]}var elements=[];var consts=[];exp.expression.elements.forEach(function(el){el=el.evaluate(compressor);if(el.length>1){consts.push(el[1])}else{if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}));consts.length=0}elements.push(el[0])}});if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}))}if(elements.length==0)return make_node(AST_String,self,{value:""});if(elements.length==1){if(elements[0].is_string(compressor)){return elements[0]}return make_node(AST_Binary,elements[0],{operator:"+",left:make_node(AST_String,self,{value:""}),right:elements[0]})}if(separator==""){var first;if(elements[0].is_string(compressor)||elements[1].is_string(compressor)){first=elements.shift()}else{first=make_node(AST_String,self,{value:""})}return elements.reduce(function(prev,el){return make_node(AST_Binary,el,{operator:"+",left:prev,right:el})},first).transform(compressor)}var node=self.clone();node.expression=node.expression.clone();node.expression.expression=node.expression.expression.clone();node.expression.expression.elements=elements;return best_of(self,node)}}if(exp instanceof AST_Function){if(exp.body[0]instanceof AST_Return){var value=exp.body[0].value;if(!value||value.is_constant()){var args=self.args.concat(value||make_node(AST_Undefined,self));return AST_Seq.from_array(args).transform(compressor)}}if(compressor.option("side_effects")){if(!AST_Block.prototype.has_side_effects.call(exp,compressor)){var args=self.args.concat(make_node(AST_Undefined,self));return AST_Seq.from_array(args).transform(compressor)}}}if(compressor.option("drop_console")){if(exp instanceof AST_PropAccess){var name=exp.expression;while(name.expression){name=name.expression}if(name instanceof AST_SymbolRef&&name.name=="console"&&name.undeclared()){return make_node(AST_Undefined,self).transform(compressor)}}}
 if(compressor.option("negate_iife")&&compressor.parent()instanceof AST_SimpleStatement&&is_iife_call(self)){return self.negate(compressor,true)}return self});OPT(AST_New,function(self,compressor){if(compressor.option("unsafe")){var exp=self.expression;if(exp instanceof AST_SymbolRef&&exp.undeclared()){switch(exp.name){case"Object":case"RegExp":case"Function":case"Error":case"Array":return make_node(AST_Call,self,self).transform(compressor)}}}return self});OPT(AST_Seq,function(self,compressor){if(!compressor.option("side_effects"))return self;self.car=self.car.drop_side_effect_free(compressor,first_in_statement(compressor));if(!self.car)return maintain_this_binding(compressor.parent(),self,self.cdr);if(compressor.option("cascade")){var left;if(self.car instanceof AST_Assign&&!self.car.left.has_side_effects(compressor)){left=self.car.left}else if(self.car instanceof AST_Unary&&(self.car.operator=="++"||self.car.operator=="--")){left=self.car.expression}if(left){var parent,field;var cdr=self.cdr;while(true){if(cdr.equivalent_to(left)){var car=self.car instanceof AST_UnaryPostfix?make_node(AST_UnaryPrefix,self.car,{operator:self.car.operator,expression:left}):self.car;if(parent){parent[field]=car;return self.cdr}return car}if(cdr instanceof AST_Binary&&!(cdr instanceof AST_Assign)){field=cdr.left.is_constant()?"right":"left"}else if(cdr instanceof AST_Call||cdr instanceof AST_Unary&&cdr.operator!="++"&&cdr.operator!="--"){field="expression"}else break;parent=cdr;cdr=cdr[field]}}}if(is_undefined(self.cdr)){return make_node(AST_UnaryPrefix,self,{operator:"void",expression:self.car})}return self});AST_Unary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.expression instanceof AST_Seq){var seq=this.expression;var x=seq.to_array();this.expression=x.pop();x.push(this);seq=AST_Seq.from_array(x).transform(compressor);return seq}}return this});OPT(AST_UnaryPostfix,function(self,compressor){return self.lift_sequences(compressor)});OPT(AST_UnaryPrefix,function(self,compressor){var seq=self.lift_sequences(compressor);if(seq!==self){return seq}var e=self.expression;if(compressor.option("side_effects")&&self.operator=="void"){e=e.drop_side_effect_free(compressor);if(e){self.expression=e;return self}else{return make_node(AST_Undefined,self).transform(compressor)}}if(compressor.option("booleans")&&compressor.in_boolean_context()){switch(self.operator){case"!":if(e instanceof AST_UnaryPrefix&&e.operator=="!"){return e.expression}if(e instanceof AST_Binary){var statement=first_in_statement(compressor);self=(statement?best_of_statement:best_of)(self,e.negate(compressor,statement))}break;case"typeof":compressor.warn("Boolean expression always true [{file}:{line},{col}]",self.start);return make_node(AST_Seq,self,{car:e,cdr:make_node(AST_True,self)}).optimize(compressor)}}return self.evaluate(compressor)[0]});function has_side_effects_or_prop_access(node,compressor){var save_pure_getters=compressor.option("pure_getters");compressor.options.pure_getters=false;var ret=node.has_side_effects(compressor);compressor.options.pure_getters=save_pure_getters;return ret}AST_Binary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.left instanceof AST_Seq){var seq=this.left;var x=seq.to_array();this.left=x.pop();x.push(this);seq=AST_Seq.from_array(x).transform(compressor);return seq}if(this.right instanceof AST_Seq&&this instanceof AST_Assign&&!has_side_effects_or_prop_access(this.left,compressor)){var seq=this.right;var x=seq.to_array();this.right=x.pop();x.push(this);seq=AST_Seq.from_array(x).transform(compressor);return seq}}return this});var commutativeOperators=makePredicate("== === != !== * & | ^");OPT(AST_Binary,function(self,compressor){var lhs=self.left.evaluate(compressor);var rhs=self.right.evaluate(compressor);if(lhs.length>1&&lhs[0].is_constant()!==self.left.is_constant()||rhs.length>1&&rhs[0].is_constant()!==self.right.is_constant()){return make_node(AST_Binary,self,{operator:self.operator,left:lhs[0],right:rhs[0]}).optimize(compressor)}function reversible(){return self.left instanceof AST_Constant||self.right instanceof AST_Constant||!self.left.has_side_effects(compressor)&&!self.right.has_side_effects(compressor)}function reverse(op){if(reversible()){if(op)self.operator=op;var tmp=self.left;self.left=self.right;self.right=tmp}}if(commutativeOperators(self.operator)){if(self.right instanceof AST_Constant&&!(self.left instanceof AST_Constant)){if(!(self.left instanceof AST_Binary&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){reverse()}}if(/^[!=]==?$/.test(self.operator)){if(self.left instanceof AST_SymbolRef&&self.right instanceof AST_Conditional){if(self.right.consequent instanceof AST_SymbolRef&&self.right.consequent.definition()===self.left.definition()){if(/^==/.test(self.operator))return self.right.condition;if(/^!=/.test(self.operator))return self.right.condition.negate(compressor)}if(self.right.alternative instanceof AST_SymbolRef&&self.right.alternative.definition()===self.left.definition()){if(/^==/.test(self.operator))return self.right.condition.negate(compressor);if(/^!=/.test(self.operator))return self.right.condition}}if(self.right instanceof AST_SymbolRef&&self.left instanceof AST_Conditional){if(self.left.consequent instanceof AST_SymbolRef&&self.left.consequent.definition()===self.right.definition()){if(/^==/.test(self.operator))return self.left.condition;if(/^!=/.test(self.operator))return self.left.condition.negate(compressor)}if(self.left.alternative instanceof AST_SymbolRef&&self.left.alternative.definition()===self.right.definition()){if(/^==/.test(self.operator))return self.left.condition.negate(compressor);if(/^!=/.test(self.operator))return self.left.condition}}}}self=self.lift_sequences(compressor);if(compressor.option("comparisons"))switch(self.operator){case"===":case"!==":if(self.left.is_string(compressor)&&self.right.is_string(compressor)||self.left.is_number(compressor)&&self.right.is_number(compressor)||self.left.is_boolean()&&self.right.is_boolean()){self.operator=self.operator.substr(0,2)}case"==":case"!=":if(self.left instanceof AST_String&&self.left.value=="undefined"&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="typeof"){var expr=self.right.expression;if(expr instanceof AST_SymbolRef?!expr.undeclared():!(expr instanceof AST_PropAccess)||compressor.option("screw_ie8")){self.right=expr;self.left=make_node(AST_Undefined,self.left).optimize(compressor);if(self.operator.length==2)self.operator+="="}}break}if(compressor.option("booleans")&&compressor.in_boolean_context())switch(self.operator){case"&&":var ll=self.left.evaluate(compressor);var rr=self.right.evaluate(compressor);if(ll.length>1&&!ll[1]||rr.length>1&&!rr[1]){compressor.warn("Boolean && always false [{file}:{line},{col}]",self.start);return make_node(AST_Seq,self,{car:self.left,cdr:make_node(AST_False,self)}).optimize(compressor)}if(ll.length>1&&ll[1]){return rr[0]}if(rr.length>1&&rr[1]){return ll[0]}break;case"||":var ll=self.left.evaluate(compressor);var rr=self.right.evaluate(compressor);if(ll.length>1&&ll[1]||rr.length>1&&rr[1]){compressor.warn("Boolean || always true [{file}:{line},{col}]",self.start);return make_node(AST_Seq,self,{car:self.left,cdr:make_node(AST_True,self)}).optimize(compressor)}if(ll.length>1&&!ll[1]){return rr[0]}if(rr.length>1&&!rr[1]){return ll[0]}break;case"+":var ll=self.left.evaluate(compressor);var rr=self.right.evaluate(compressor);if(ll.length>1&&ll[0]instanceof AST_String&&ll[1]){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_node(AST_Seq,self,{car:self.right,cdr:make_node(AST_True,self)}).optimize(compressor)}if(rr.length>1&&rr[0]instanceof AST_String&&rr[1]){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_node(AST_Seq,self,{car:self.left,cdr:make_node(AST_True,self)}).optimize(compressor)}break}if(compressor.option("comparisons")&&self.is_boolean()){if(!(compressor.parent()instanceof AST_Binary)||compressor.parent()instanceof AST_Assign){var statement=first_in_statement(compressor);var negated=make_node(AST_UnaryPrefix,self,{operator:"!",expression:self.negate(compressor,statement)});self=(statement?best_of_statement:best_of)(self,negated)}if(compressor.option("unsafe_comps")){switch(self.operator){case"<":reverse(">");break;case"<=":reverse(">=");break}}}if(self.operator=="+"){if(self.right instanceof AST_String&&self.right.getValue()==""&&self.left.is_string(compressor)){return self.left}if(self.left instanceof AST_String&&self.left.getValue()==""&&self.right.is_string(compressor)){return self.right}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.left instanceof AST_String&&self.left.left.getValue()==""&&self.right.is_string(compressor)){self.left=self.left.right;return self.transform(compressor)}}if(compressor.option("evaluate")){switch(self.operator){case"&&":if(self.left.is_constant()){if(self.left.constant_value(compressor)){compressor.warn("Condition left of && always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),self,self.right)}else{compressor.warn("Condition left of && always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),self,self.left)}}break;case"||":if(self.left.is_constant()){if(self.left.constant_value(compressor)){compressor.warn("Condition left of || always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),self,self.left)}else{compressor.warn("Condition left of || always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),self,self.right)}}break}var associative=true;switch(self.operator){case"+":if(self.left instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_String,self.left,{value:""+self.left.getValue()+self.right.left.getValue(),start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.right instanceof AST_Constant&&self.left.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:self.left.left,right:make_node(AST_String,self.right,{value:""+self.left.right.getValue()+self.right.getValue(),start:self.left.right.start,end:self.right.end})})}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.is_string(compressor)&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_Binary,self.left,{operator:"+",left:self.left.left,right:make_node(AST_String,self.left.right,{value:""+self.left.right.getValue()+self.right.left.getValue(),start:self.left.right.start,end:self.right.left.end})}),right:self.right.right})}if(self.right instanceof AST_UnaryPrefix&&self.right.operator=="-"&&self.left.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.left,right:self.right.expression})}if(self.left instanceof AST_UnaryPrefix&&self.left.operator=="-"&&reversible()&&self.right.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.right,right:self.left.expression})}case"*":associative=compressor.option("unsafe_math");case"&":case"|":case"^":if(self.left.is_number(compressor)&&self.right.is_number(compressor)&&reversible()&&!(self.left instanceof AST_Binary&&self.left.operator!=self.operator&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){var reversed=make_node(AST_Binary,self,{operator:self.operator,left:self.right,right:self.left});if(self.right instanceof AST_Constant&&!(self.left instanceof AST_Constant)){self=best_of(reversed,self)}else{self=best_of(self,reversed)}}if(associative&&self.is_number(compressor)){if(self.right instanceof AST_Binary&&self.right.operator==self.operator){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left,start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator==self.operator){if(self.left.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.left,right:self.right,start:self.left.left.start,end:self.right.end}),right:self.left.right})}else if(self.left.right instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.right,right:self.right,start:self.left.right.start,end:self.right.end}),right:self.left.left})}}if(self.left instanceof AST_Binary&&self.left.operator==self.operator&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator==self.operator&&self.right.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:make_node(AST_Binary,self.left.left,{operator:self.operator,left:self.left.right,right:self.right.left,start:self.left.right.start,end:self.right.left.end}),right:self.left.left}),right:self.right.right})}}}}if(self.right instanceof AST_Binary&&self.right.operator==self.operator&&(self.operator=="&&"||self.operator=="||"||self.operator=="+"&&(self.right.left.is_string(compressor)||self.left.is_string(compressor)&&self.right.right.is_string(compressor)))){self.left=make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left});self.right=self.right.right;return self.transform(compressor)}return self.evaluate(compressor)[0]});OPT(AST_SymbolRef,function(self,compressor){var def=self.resolve_defines(compressor);if(def){return def}if(compressor.option("screw_ie8")&&self.undeclared()&&!isLHS(self,compressor.parent())&&(!self.scope.uses_with||!compressor.find_parent(AST_With))){switch(self.name){case"undefined":return make_node(AST_Undefined,self).transform(compressor);case"NaN":return make_node(AST_NaN,self).transform(compressor);case"Infinity":return make_node(AST_Infinity,self).transform(compressor)}}if(compressor.option("evaluate")&&compressor.option("reduce_vars")){var d=self.definition();if(d.fixed){if(d.should_replace===undefined){var init=d.fixed.evaluate(compressor);if(init.length>1){var value=init[0].print_to_string().length;var name=d.name.length;var freq=d.references.length;var overhead=d.global||!freq?0:(name+2+value)/freq;d.should_replace=value<=name+overhead?init[0]:false}else{d.should_replace=false}}if(d.should_replace){return d.should_replace}}}return self});OPT(AST_Infinity,function(self,compressor){return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:1}),right:make_node(AST_Number,self,{value:0})})});OPT(AST_Undefined,function(self,compressor){if(compressor.option("unsafe")){var scope=compressor.find_parent(AST_Scope);var undef=scope.find_variable("undefined");if(undef){var ref=make_node(AST_SymbolRef,self,{name:"undefined",scope:scope,thedef:undef});ref.is_undefined=true;return ref}}return self});var ASSIGN_OPS=["+","-","/","*","%",">>","<<",">>>","|","^","&"];var ASSIGN_OPS_COMMUTATIVE=["*","|","^","&"];OPT(AST_Assign,function(self,compressor){self=self.lift_sequences(compressor);if(self.operator=="="&&self.left instanceof AST_SymbolRef&&self.right instanceof AST_Binary){if(self.right.left instanceof AST_SymbolRef&&self.right.left.name==self.left.name&&member(self.right.operator,ASSIGN_OPS)){self.operator=self.right.operator+"=";self.right=self.right.right}else if(self.right.right instanceof AST_SymbolRef&&self.right.right.name==self.left.name&&member(self.right.operator,ASSIGN_OPS_COMMUTATIVE)&&!self.right.left.has_side_effects(compressor)){self.operator=self.right.operator+"=";self.right=self.right.left}}return self});OPT(AST_Conditional,function(self,compressor){if(!compressor.option("conditionals"))return self;if(self.condition instanceof AST_Seq){var car=self.condition.car;self.condition=self.condition.cdr;return AST_Seq.cons(car,self)}var cond=self.condition.evaluate(compressor);if(cond.length>1){if(cond[1]){compressor.warn("Condition always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),self,self.consequent)}else{compressor.warn("Condition always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),self,self.alternative)}}var statement=first_in_statement(compressor);var negated=cond[0].negate(compressor,statement);if((statement?best_of_statement:best_of)(cond[0],negated)===negated){self=make_node(AST_Conditional,self,{condition:negated,consequent:self.alternative,alternative:self.consequent})}var consequent=self.consequent;var alternative=self.alternative;if(consequent instanceof AST_Assign&&alternative instanceof AST_Assign&&consequent.operator==alternative.operator&&consequent.left.equivalent_to(alternative.left)&&(!consequent.left.has_side_effects(compressor)||!self.condition.has_side_effects(compressor))){return make_node(AST_Assign,self,{operator:consequent.operator,left:consequent.left,right:make_node(AST_Conditional,self,{condition:self.condition,consequent:consequent.right,alternative:alternative.right})})}if(consequent instanceof AST_Call&&alternative.TYPE===consequent.TYPE&&consequent.args.length==1&&alternative.args.length==1&&consequent.expression.equivalent_to(alternative.expression)&&!consequent.expression.has_side_effects(compressor)){consequent.args[0]=make_node(AST_Conditional,self,{condition:self.condition,consequent:consequent.args[0],alternative:alternative.args[0]});return consequent}if(consequent instanceof AST_Conditional&&consequent.alternative.equivalent_to(alternative)){return make_node(AST_Conditional,self,{condition:make_node(AST_Binary,self,{left:self.condition,operator:"&&",right:consequent.condition}),consequent:consequent.consequent,alternative:alternative})}if(consequent.equivalent_to(alternative)){return make_node(AST_Seq,self,{car:self.condition,cdr:consequent}).optimize(compressor)}if(is_true(self.consequent)){if(is_false(self.alternative)){return booleanize(self.condition)}return make_node(AST_Binary,self,{operator:"||",left:booleanize(self.condition),right:self.alternative})}if(is_false(self.consequent)){if(is_true(self.alternative)){return booleanize(self.condition.negate(compressor))}return make_node(AST_Binary,self,{operator:"&&",left:booleanize(self.condition.negate(compressor)),right:self.alternative})}if(is_true(self.alternative)){return make_node(AST_Binary,self,{operator:"||",left:booleanize(self.condition.negate(compressor)),right:self.consequent})}if(is_false(self.alternative)){return make_node(AST_Binary,self,{operator:"&&",left:booleanize(self.condition),right:self.consequent})}return self;function booleanize(node){if(node.is_boolean())return node;return make_node(AST_UnaryPrefix,node,{operator:"!",expression:node.negate(compressor)})}function is_true(node){return node instanceof AST_True||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&!node.expression.value}function is_false(node){return node instanceof AST_False||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&!!node.expression.value}});OPT(AST_Boolean,function(self,compressor){if(compressor.option("booleans")){var p=compressor.parent();if(p instanceof AST_Binary&&(p.operator=="=="||p.operator=="!=")){compressor.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]",{operator:p.operator,value:self.value,file:p.start.file,line:p.start.line,col:p.start.col});return make_node(AST_Number,self,{value:+self.value})}return make_node(AST_UnaryPrefix,self,{operator:"!",expression:make_node(AST_Number,self,{value:1-self.value})})}return self});OPT(AST_Sub,function(self,compressor){var prop=self.property;if(prop instanceof AST_String&&compressor.option("properties")){prop=prop.getValue();if(RESERVED_WORDS(prop)?compressor.option("screw_ie8"):is_identifier_string(prop)){return make_node(AST_Dot,self,{expression:self.expression,property:prop}).optimize(compressor)}var v=parseFloat(prop);if(!isNaN(v)&&v.toString()==prop){self.property=make_node(AST_Number,self.property,{value:v})}}return self.evaluate(compressor)[0]});OPT(AST_Dot,function(self,compressor){var def=self.resolve_defines(compressor);if(def){return def}var prop=self.property;if(RESERVED_WORDS(prop)&&!compressor.option("screw_ie8")){return make_node(AST_Sub,self,{expression:self.expression,property:make_node(AST_String,self,{value:prop})}).optimize(compressor)}if(compressor.option("unsafe_proto")&&self.expression instanceof AST_Dot&&self.expression.property=="prototype"){var exp=self.expression.expression;if(exp instanceof AST_SymbolRef&&exp.undeclared())switch(exp.name){case"Array":self.expression=make_node(AST_Array,self.expression,{elements:[]});break;case"Object":self.expression=make_node(AST_Object,self.expression,{properties:[]});break;case"String":self.expression=make_node(AST_String,self.expression,{value:""});break}}return self.evaluate(compressor)[0]});function literals_in_boolean_context(self,compressor){if(compressor.option("booleans")&&compressor.in_boolean_context()){var best=first_in_statement(compressor)?best_of_statement:best_of;return best(self,make_node(AST_Seq,self,{car:self,cdr:make_node(AST_True,self)}).optimize(compressor))}return self}OPT(AST_Array,literals_in_boolean_context);OPT(AST_Object,literals_in_boolean_context);OPT(AST_RegExp,literals_in_boolean_context);OPT(AST_Return,function(self,compressor){if(self.value&&is_undefined(self.value)){self.value=null}return self});OPT(AST_VarDef,function(self,compressor){var defines=compressor.option("global_defs");if(defines&&HOP(defines,self.name.name)){compressor.warn("global_defs "+self.name.name+" redefined [{file}:{line},{col}]",self.start)}return self})})();/***********************************************************************
 
   A JavaScript tokenizer / parser / beautifier / compressor.
   https://github.com/mishoo/UglifyJS2