// lib/handlebars/parser.js
/* Jison generated parser */
var handlebars = (function(){
var parser = {trace: function trace() { },
yy: {},
symbols_: {"error":2,"root":3,"program":4,"EOF":5,"statements":6,"simpleInverse":7,"statement":8,"openInverse":9,"closeBlock":10,"openBlock":11,"mustache":12,"partial":13,"CONTENT":14,"COMMENT":15,"OPEN_BLOCK":16,"inMustache":17,"CLOSE":18,"OPEN_INVERSE":19,"OPEN_ENDBLOCK":20,"path":21,"OPEN":22,"OPEN_UNESCAPED":23,"OPEN_PARTIAL":24,"params":25,"param":26,"STRING":27,"pathSegments":28,"SEP":29,"ID":30,"$accept":0,"$end":1},
terminals_: {2:"error",5:"EOF",14:"CONTENT",15:"COMMENT",16:"OPEN_BLOCK",18:"CLOSE",19:"OPEN_INVERSE",20:"OPEN_ENDBLOCK",22:"OPEN",23:"OPEN_UNESCAPED",24:"OPEN_PARTIAL",27:"STRING",29:"SEP",30:"ID"},
productions_: [0,[3,2],[4,3],[4,1],[4,0],[6,1],[6,2],[8,3],[8,3],[8,1],[8,1],[8,1],[8,1],[11,3],[9,3],[10,3],[12,3],[12,3],[13,3],[13,4],[7,2],[17,2],[17,1],[25,2],[25,1],[26,1],[26,1],[21,1],[28,3],[28,1]],
performAction: function anonymous(yytext,yyleng,yylineno,yy,yystate,$$,_$) {

var $0 = $$.length - 1;
switch (yystate) {
case 1: return $$[$0-1] 
break;
case 2: this.$ = new yy.ProgramNode($$[$0-2], $$[$0]) 
break;
case 3: this.$ = new yy.ProgramNode($$[$0]) 
break;
case 4: this.$ = new yy.ProgramNode([]) 
break;
case 5: this.$ = [$$[$0]] 
break;
case 6: $$[$0-1].push($$[$0]); this.$ = $$[$0-1] 
break;
case 7: this.$ = new yy.InverseNode($$[$0-2], $$[$0-1], $$[$0]) 
break;
case 8: this.$ = new yy.BlockNode($$[$0-2], $$[$0-1], $$[$0]) 
break;
case 9: this.$ = $$[$0] 
break;
case 10: this.$ = $$[$0] 
break;
case 11: this.$ = new yy.ContentNode($$[$0]) 
break;
case 12: this.$ = new yy.CommentNode($$[$0]) 
break;
case 13: this.$ = new yy.MustacheNode($$[$0-1]) 
break;
case 14: this.$ = new yy.MustacheNode($$[$0-1]) 
break;
case 15: this.$ = $$[$0-1] 
break;
case 16: this.$ = new yy.MustacheNode($$[$0-1]) 
break;
case 17: this.$ = new yy.MustacheNode($$[$0-1], true) 
break;
case 18: this.$ = new yy.PartialNode($$[$0-1]) 
break;
case 19: this.$ = new yy.PartialNode($$[$0-2], $$[$0-1]) 
break;
case 20: 
break;
case 21: this.$ = [$$[$0-1]].concat($$[$0]) 
break;
case 22: this.$ = [$$[$0]] 
break;
case 23: $$[$0-1].push($$[$0]); this.$ = $$[$0-1]; 
break;
case 24: this.$ = [$$[$0]] 
break;
case 25: this.$ = $$[$0] 
break;
case 26: this.$ = new yy.StringNode($$[$0]) 
break;
case 27: this.$ = new yy.IdNode($$[$0]) 
break;
case 28: $$[$0-2].push($$[$0]); this.$ = $$[$0-2]; 
break;
case 29: this.$ = [$$[$0]] 
break;
}
},
table: [{3:1,4:2,5:[2,4],6:3,8:4,9:5,11:6,12:7,13:8,14:[1,9],15:[1,10],16:[1,12],19:[1,11],22:[1,13],23:[1,14],24:[1,15]},{1:[3]},{5:[1,16]},{5:[2,3],7:17,8:18,9:5,11:6,12:7,13:8,14:[1,9],15:[1,10],16:[1,12],19:[1,19],20:[2,3],22:[1,13],23:[1,14],24:[1,15]},{5:[2,5],14:[2,5],15:[2,5],16:[2,5],19:[2,5],20:[2,5],22:[2,5],23:[2,5],24:[2,5]},{4:20,6:3,8:4,9:5,11:6,12:7,13:8,14:[1,9],15:[1,10],16:[1,12],19:[1,11],20:[2,4],22:[1,13],23:[1,14],24:[1,15]},{4:21,6:3,8:4,9:5,11:6,12:7,13:8,14:[1,9],15:[1,10],16:[1,12],19:[1,11],20:[2,4],22:[1,13],23:[1,14],24:[1,15]},{5:[2,9],14:[2,9],15:[2,9],16:[2,9],19:[2,9],20:[2,9],22:[2,9],23:[2,9],24:[2,9]},{5:[2,10],14:[2,10],15:[2,10],16:[2,10],19:[2,10],20:[2,10],22:[2,10],23:[2,10],24:[2,10]},{5:[2,11],14:[2,11],15:[2,11],16:[2,11],19:[2,11],20:[2,11],22:[2,11],23:[2,11],24:[2,11]},{5:[2,12],14:[2,12],15:[2,12],16:[2,12],19:[2,12],20:[2,12],22:[2,12],23:[2,12],24:[2,12]},{17:22,21:23,28:24,30:[1,25]},{17:26,21:23,28:24,30:[1,25]},{17:27,21:23,28:24,30:[1,25]},{17:28,21:23,28:24,30:[1,25]},{21:29,28:24,30:[1,25]},{1:[2,1]},{6:30,8:4,9:5,11:6,12:7,13:8,14:[1,9],15:[1,10],16:[1,12],19:[1,11],22:[1,13],23:[1,14],24:[1,15]},{5:[2,6],14:[2,6],15:[2,6],16:[2,6],19:[2,6],20:[2,6],22:[2,6],23:[2,6],24:[2,6]},{17:22,18:[1,31],21:23,28:24,30:[1,25]},{10:32,20:[1,33]},{10:34,20:[1,33]},{18:[1,35]},{18:[2,22],21:38,25:36,26:37,27:[1,39],28:24,30:[1,25]},{18:[2,27],27:[2,27],29:[1,40],30:[2,27]},{18:[2,29],27:[2,29],29:[2,29],30:[2,29]},{18:[1,41]},{18:[1,42]},{18:[1,43]},{18:[1,44],21:45,28:24,30:[1,25]},{5:[2,2],8:18,9:5,11:6,12:7,13:8,14:[1,9],15:[1,10],16:[1,12],19:[1,11],20:[2,2],22:[1,13],23:[1,14],24:[1,15]},{14:[2,20],15:[2,20],16:[2,20],19:[2,20],22:[2,20],23:[2,20],24:[2,20]},{5:[2,7],14:[2,7],15:[2,7],16:[2,7],19:[2,7],20:[2,7],22:[2,7],23:[2,7],24:[2,7]},{21:46,28:24,30:[1,25]},{5:[2,8],14:[2,8],15:[2,8],16:[2,8],19:[2,8],20:[2,8],22:[2,8],23:[2,8],24:[2,8]},{14:[2,14],15:[2,14],16:[2,14],19:[2,14],20:[2,14],22:[2,14],23:[2,14],24:[2,14]},{18:[2,21],21:38,26:47,27:[1,39],28:24,30:[1,25]},{18:[2,24],27:[2,24],30:[2,24]},{18:[2,25],27:[2,25],30:[2,25]},{18:[2,26],27:[2,26],30:[2,26]},{30:[1,48]},{14:[2,13],15:[2,13],16:[2,13],19:[2,13],20:[2,13],22:[2,13],23:[2,13],24:[2,13]},{5:[2,16],14:[2,16],15:[2,16],16:[2,16],19:[2,16],20:[2,16],22:[2,16],23:[2,16],24:[2,16]},{5:[2,17],14:[2,17],15:[2,17],16:[2,17],19:[2,17],20:[2,17],22:[2,17],23:[2,17],24:[2,17]},{5:[2,18],14:[2,18],15:[2,18],16:[2,18],19:[2,18],20:[2,18],22:[2,18],23:[2,18],24:[2,18]},{18:[1,49]},{18:[1,50]},{18:[2,23],27:[2,23],30:[2,23]},{18:[2,28],27:[2,28],29:[2,28],30:[2,28]},{5:[2,19],14:[2,19],15:[2,19],16:[2,19],19:[2,19],20:[2,19],22:[2,19],23:[2,19],24:[2,19]},{5:[2,15],14:[2,15],15:[2,15],16:[2,15],19:[2,15],20:[2,15],22:[2,15],23:[2,15],24:[2,15]}],
defaultActions: {16:[2,1]},
parseError: function parseError(str, hash) {
    throw new Error(str);
},
parse: function parse(input) {
    var self = this,
        stack = [0],
        vstack = [null], // semantic value stack
        lstack = [], // location stack
        table = this.table,
        yytext = '',
        yylineno = 0,
        yyleng = 0,
        recovering = 0,
        TERROR = 2,
        EOF = 1;

    //this.reductionCount = this.shiftCount = 0;

    this.lexer.setInput(input);
    this.lexer.yy = this.yy;
    this.yy.lexer = this.lexer;
    var yyloc = this.lexer.yylloc;
    lstack.push(yyloc);

    if (typeof this.yy.parseError === 'function')
        this.parseError = this.yy.parseError;

    function popStack (n) {
        stack.length = stack.length - 2*n;
        vstack.length = vstack.length - n;
        lstack.length = lstack.length - n;
    }

    function lex() {
        var token;
        token = self.lexer.lex() || 1; // $end = 1
        // if token isn't its numeric value, convert
        if (typeof token !== 'number') {
            token = self.symbols_[token] || token;
        }
        return token;
    };

    var symbol, preErrorSymbol, state, action, a, r, yyval={},p,len,newState, expected;
    while (true) {
        // retreive state number from top of stack
        state = stack[stack.length-1];

        // use default actions if available
        if (this.defaultActions[state]) {
            action = this.defaultActions[state];
        } else {
            if (symbol == null)
                symbol = lex();
            // read action for current state and first input
            action = table[state] && table[state][symbol];
        }

        // handle parse error
        if (typeof action === 'undefined' || !action.length || !action[0]) {

            if (!recovering) {
                // Report error
                expected = [];
                for (p in table[state]) if (this.terminals_[p] && p > 2) {
                    expected.push("'"+this.terminals_[p]+"'");
                }
                var errStr = '';
                if (this.lexer.showPosition) {
                    errStr = 'Parse error on line '+(yylineno+1)+":\n"+this.lexer.showPosition()+'\nExpecting '+expected.join(', ');
                } else {
                    errStr = 'Parse error on line '+(yylineno+1)+": Unexpected " +
                                  (symbol == 1 /*EOF*/ ? "end of input" :
                                              ("'"+(this.terminals_[symbol] || symbol)+"'"));
                }
                this.parseError(errStr,
                    {text: this.lexer.match, token: this.terminals_[symbol] || symbol, line: this.lexer.yylineno, loc: yyloc, expected: expected});
            }

            // just recovered from another error
            if (recovering == 3) {
                if (symbol == EOF) {
                    throw new Error(errStr || 'Parsing halted.');
                }

                // discard current lookahead and grab another
                yyleng = this.lexer.yyleng;
                yytext = this.lexer.yytext;
                yylineno = this.lexer.yylineno;
                yyloc = this.lexer.yylloc;
                symbol = lex();
            }

            // try to recover from error
            while (1) {
                // check for error recovery rule in this state
                if ((TERROR.toString()) in table[state]) {
                    break;
                }
                if (state == 0) {
                    throw new Error(errStr || 'Parsing halted.');
                }
                popStack(1);
                state = stack[stack.length-1];
            }
            
            preErrorSymbol = symbol; // save the lookahead token
            symbol = TERROR;         // insert generic error symbol as new lookahead
            state = stack[stack.length-1];
            action = table[state] && table[state][TERROR];
            recovering = 3; // allow 3 real symbols to be shifted before reporting a new error
        }

        // this shouldn't happen, unless resolve defaults are off
        if (action[0] instanceof Array && action.length > 1) {
            throw new Error('Parse Error: multiple actions possible at state: '+state+', token: '+symbol);
        }

        switch (action[0]) {

            case 1: // shift
                //this.shiftCount++;

                stack.push(symbol);
                vstack.push(this.lexer.yytext);
                lstack.push(this.lexer.yylloc);
                stack.push(action[1]); // push state
                symbol = null;
                if (!preErrorSymbol) { // normal execution/no error
                    yyleng = this.lexer.yyleng;
                    yytext = this.lexer.yytext;
                    yylineno = this.lexer.yylineno;
                    yyloc = this.lexer.yylloc;
                    if (recovering > 0)
                        recovering--;
                } else { // error just occurred, resume old lookahead f/ before error
                    symbol = preErrorSymbol;
                    preErrorSymbol = null;
                }
                break;

            case 2: // reduce
                //this.reductionCount++;

                len = this.productions_[action[1]][1];

                // perform semantic action
                yyval.$ = vstack[vstack.length-len]; // default to $$ = $1
                // default location, uses first token for firsts, last for lasts
                yyval._$ = {
                    first_line: lstack[lstack.length-(len||1)].first_line,
                    last_line: lstack[lstack.length-1].last_line,
                    first_column: lstack[lstack.length-(len||1)].first_column,
                    last_column: lstack[lstack.length-1].last_column,
                };
                r = this.performAction.call(yyval, yytext, yyleng, yylineno, this.yy, action[1], vstack, lstack);

                if (typeof r !== 'undefined') {
                    return r;
                }

                // pop off stack
                if (len) {
                    stack = stack.slice(0,-1*len*2);
                    vstack = vstack.slice(0, -1*len);
                    lstack = lstack.slice(0, -1*len);
                }

                stack.push(this.productions_[action[1]][0]);    // push nonterminal (reduce)
                vstack.push(yyval.$);
                lstack.push(yyval._$);
                // goto new state = table[STATE][NONTERMINAL]
                newState = table[stack[stack.length-2]][stack[stack.length-1]];
                stack.push(newState);
                break;

            case 3: // accept
                return true;
        }

    }

    return true;
}};/* Jison generated lexer */
var lexer = (function(){var lexer = ({EOF:1,
parseError:function parseError(str, hash) {
        if (this.yy.parseError) {
            this.yy.parseError(str, hash);
        } else {
            throw new Error(str);
        }
    },
setInput:function (input) {
        this._input = input;
        this._more = this._less = this.done = false;
        this.yylineno = this.yyleng = 0;
        this.yytext = this.matched = this.match = '';
        this.conditionStack = ['INITIAL'];
        this.yylloc = {first_line:1,first_column:0,last_line:1,last_column:0};
        return this;
    },
input:function () {
        var ch = this._input[0];
        this.yytext+=ch;
        this.yyleng++;
        this.match+=ch;
        this.matched+=ch;
        var lines = ch.match(/\n/);
        if (lines) this.yylineno++;
        this._input = this._input.slice(1);
        return ch;
    },
unput:function (ch) {
        this._input = ch + this._input;
        return this;
    },
more:function () {
        this._more = true;
        return this;
    },
pastInput:function () {
        var past = this.matched.substr(0, this.matched.length - this.match.length);
        return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
    },
upcomingInput:function () {
        var next = this.match;
        if (next.length < 20) {
            next += this._input.substr(0, 20-next.length);
        }
        return (next.substr(0,20)+(next.length > 20 ? '...':'')).replace(/\n/g, "");
    },
showPosition:function () {
        var pre = this.pastInput();
        var c = new Array(pre.length + 1).join("-");
        return pre + this.upcomingInput() + "\n" + c+"^";
    },
next:function () {
        if (this.done) {
            return this.EOF;
        }
        if (!this._input) this.done = true;

        var token,
            match,
            col,
            lines;
        if (!this._more) {
            this.yytext = '';
            this.match = '';
        }
        var rules = this._currentRules();
        for (var i=0;i < rules.length; i++) {
            match = this._input.match(this.rules[rules[i]]);
            if (match) {
                lines = match[0].match(/\n.*/g);
                if (lines) this.yylineno += lines.length;
                this.yylloc = {first_line: this.yylloc.last_line,
                               last_line: this.yylineno+1,
                               first_column: this.yylloc.last_column,
                               last_column: lines ? lines[lines.length-1].length-1 : this.yylloc.last_column + match.length}
                this.yytext += match[0];
                this.match += match[0];
                this.matches = match;
                this.yyleng = this.yytext.length;
                this._more = false;
                this._input = this._input.slice(match[0].length);
                this.matched += match[0];
                token = this.performAction.call(this, this.yy, this, rules[i],this.conditionStack[this.conditionStack.length-1]);
                if (token) return token;
                else return;
            }
        }
        if (this._input === "") {
            return this.EOF;
        } else {
            this.parseError('Lexical error on line '+(this.yylineno+1)+'. Unrecognized text.\n'+this.showPosition(), 
                    {text: "", token: null, line: this.yylineno});
        }
    },
lex:function lex() {
        var r = this.next();
        if (typeof r !== 'undefined') {
            return r;
        } else {
            return this.lex();
        }
    },
begin:function begin(condition) {
        this.conditionStack.push(condition);
    },
popState:function popState() {
        return this.conditionStack.pop();
    },
_currentRules:function _currentRules() {
        return this.conditions[this.conditionStack[this.conditionStack.length-1]].rules;
    }});
lexer.performAction = function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {

var YYSTATE=YY_START
switch($avoiding_name_collisions) {
case 0: this.begin("mu"); if (yy_.yytext) return 14; 
break;
case 1: return 14; 
break;
case 2: return 24; 
break;
case 3: return 16; 
break;
case 4: return 20; 
break;
case 5: return 19; 
break;
case 6: return 19; 
break;
case 7: return 23; 
break;
case 8: return 23; 
break;
case 9: yy_.yytext = yy_.yytext.substr(3,yy_.yyleng-5); this.begin("INITIAL"); return 15; 
break;
case 10: return 22; 
break;
case 11: return 29; 
break;
case 12: /*ignore whitespace*/ 
break;
case 13: this.begin("INITIAL"); return 18; 
break;
case 14: this.begin("INITIAL"); return 18; 
break;
case 15: yy_.yytext = yy_.yytext.substr(1,yy_.yyleng-2).replace(/\\"/g,'"'); return 27; 
break;
case 16: return 30; 
break;
case 17: return 'INVALID'; 
break;
case 18: return 5; 
break;
}
};
lexer.rules = [/^[^\x00]*?(?=(\{\{))/,/^[^\x00]+/,/^\{\{>/,/^\{\{#/,/^\{\{\//,/^\{\{\^/,/^\{\{\s*else\b/,/^\{\{\{/,/^\{\{&/,/^\{\{!.*?\}\}/,/^\{\{/,/^\//,/^\s+/,/^\}\}\}/,/^\}\}/,/^"(\\["]|[^"])*"/,/^[a-zA-Z0-9_.]+(?=[} /])/,/^./,/^$/];
lexer.conditions = {"mu":{"rules":[2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18],"inclusive":false},"INITIAL":{"rules":[0,1,18],"inclusive":true}};return lexer;})()
parser.lexer = lexer;
return parser;
})();
if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
exports.parser = handlebars;
exports.parse = function () { return handlebars.parse.apply(handlebars, arguments); }
exports.main = function commonjsMain(args) {
    if (!args[1])
        throw new Error('Usage: '+args[0]+' FILE');
    if (typeof process !== 'undefined') {
        var source = require('fs').readFileSync(require('path').join(process.cwd(), args[1]), "utf8");
    } else {
        var cwd = require("file").path(require("file").cwd());
        var source = cwd.join(args[1]).read({charset: "utf-8"});
    }
    return exports.parser.parse(source);
}
if (typeof module !== 'undefined' && require.main === module) {
  exports.main(typeof process !== 'undefined' ? process.argv.slice(1) : require("system").args);
}
};
// lib/handlebars/base.js
var Handlebars = {};

Handlebars.Parser = handlebars;

Handlebars.parse = function(string) {
  Handlebars.Parser.yy = Handlebars.AST;
  return Handlebars.Parser.parse(string);
};

Handlebars.print = function(ast) {
  return new Handlebars.PrintVisitor().accept(ast);
};

Handlebars.Runtime = {};

Handlebars.Runtime.compile = function(string) {
  var ast = Handlebars.parse(string);

  return function(context, helpers, partials) {
    helpers  = helpers || Handlebars.helpers;
    partials = partials || Handlebars.partials;

    var internalContext = new Handlebars.Context(context, helpers, partials);
    var runtime = new Handlebars.Runtime(internalContext);
    runtime.accept(ast);
    return runtime.buffer;
  };
};

Handlebars.helpers  = {};
Handlebars.partials = {};

Handlebars.registerHelper = function(name, fn, inverse) {
  if(inverse) { fn.not = inverse; }
  this.helpers[name] = fn;
};

Handlebars.registerPartial = function(name, str) {
  this.partials[name] = str;
};

Handlebars.registerHelper('blockHelperMissing', function(context, fn, inverse) {
  inverse = inverse || function() {};

  var ret = "";
  var type = Object.prototype.toString.call(context);

  if(type === "[object Function]") {
    context = context();
  }

  if(context === true) {
    return fn(this);
  } else if(context === false || context == null) {
    return inverse(this);
  } else if(type === "[object Array]") {
    if(context.length > 0) {
      for(var i=0, j=context.length; i<j; i++) {
        ret = ret + fn(context[i]);
      }
    } else {
      ret = inverse(this);
    }
    return ret;
  } else {
    return fn(context);
  }
}, function(context, fn) {
  return fn(context);
});

Handlebars.registerHelper('each', function(context, fn, inverse) {
  var ret = "";

  if(context && context.length > 0) {
    for(var i=0, j=context.length; i<j; i++) {
      ret = ret + fn(context[i]);
    }
  } else {
    ret = inverse(this);
  }
  return ret;
});

Handlebars.registerHelper('if', function(context, fn, inverse) {
  if(!context || context == []) {
    return inverse(this);
  } else {
    return fn(this);
  }
});

Handlebars.registerHelper('unless', function(context, fn, inverse) {
  Handlebars.helpers['if'].call(this, context, inverse, fn);
});

Handlebars.registerHelper('with', function(context, fn) {
  return fn(context);
});

Handlebars.logger = {
  DEBUG: 0, INFO: 1, WARN: 2, ERROR: 3, level: 3,

  // override in the host environment
  log: function(level, str) {}
};

Handlebars.log = function(level, str) { Handlebars.logger.log(level, str); };
;
// lib/handlebars/ast.js
(function() {

  Handlebars.AST = {};

  Handlebars.AST.ProgramNode = function(statements, inverse) {
    this.type = "program";
    this.statements = statements;
    if(inverse) { this.inverse = new Handlebars.AST.ProgramNode(inverse); }
  };

  Handlebars.AST.MustacheNode = function(params, unescaped) {
    this.type = "mustache";
    this.id = params[0];
    this.params = params.slice(1);
    this.escaped = !unescaped;
  };

  Handlebars.AST.PartialNode = function(id, context) {
    this.type    = "partial";

    // TODO: disallow complex IDs

    this.id      = id;
    this.context = context;
  };

  var verifyMatch = function(open, close) {
    if(open.original !== close.original) {
      throw new Handlebars.Exception(open.original + " doesn't match " + close.original);
    }
  };

  Handlebars.AST.BlockNode = function(mustache, program, close) {
    verifyMatch(mustache.id, close);
    this.type = "block";
    this.mustache = mustache;
    this.program  = program;
  };

  Handlebars.AST.InverseNode = function(mustache, program, close) {
    verifyMatch(mustache.id, close);
    this.type = "inverse";
    this.mustache = mustache;
    this.program  = program;
  };

  Handlebars.AST.ContentNode = function(string) {
    this.type = "content";
    this.string = string;
  };

  Handlebars.AST.IdNode = function(parts) {
    this.type = "ID";
    this.original = parts.join("/");

    var dig = [], depth = 0;

    for(var i=0,l=parts.length; i<l; i++) {
      var part = parts[i];

      if(part === "..") { depth++; }
      else if(part === "." || part === "this") { continue; }
      else { dig.push(part); }
    }

    this.parts    = dig;
    this.depth    = depth;
    this.isSimple = (dig.length === 1) && (depth === 0);
  };

  Handlebars.AST.StringNode = function(string) {
    this.type = "STRING";
    this.string = string;
  };

  Handlebars.AST.CommentNode = function(comment) {
    this.type = "comment";
    this.comment = comment;
  };

})();;
// lib/handlebars/visitor.js

Handlebars.Visitor = function() {};

Handlebars.Visitor.prototype = {
  accept: function(object) {
    return this[object.type](object);
  }
};;
// lib/handlebars/utils.js
Handlebars.Exception = function(message) {
  this.message = message;
};

// Build out our basic SafeString type
Handlebars.SafeString = function(string) {
  this.string = string;
};
Handlebars.SafeString.prototype.toString = function() {
  return this.string.toString();
};

(function() {
  var escape = {
    '"': "&quot;",
    "<": "&lt;",
    ">": "&gt;"
  };

  var badChars = /&(?!\w+;)|[<>"]/g;
  var possible = /[&<>"]/

  var escapeChar = function(chr) {
    return escape[chr] || "&amp;"
  };

  Handlebars.Utils = {
    escapeExpression: function(string) {
      // don't escape SafeStrings, since they're already safe
      if (string instanceof Handlebars.SafeString) {
        return string.toString();
      } else if (string == null || string === false) {
        return "";
      }

      if(!possible.test(string)) { return string; }
      return string.replace(badChars, escapeChar);
    },

    isEmpty: function(value) {
      if (typeof value === "undefined") {
        return true;
      } else if (value === null) {
        return true;
      } else if (value === false) {
        return true;
      } else if(Object.prototype.toString.call(value) === "[object Array]" && value.length === 0) {
        return true;
      } else {
        return false;
      }
    }
  };
})();;
// lib/handlebars/vm.js
Handlebars.Compiler = function() {};
Handlebars.JavaScriptCompiler = function() {};

(function(Compiler, JavaScriptCompiler) {
  Compiler.OPCODE_MAP = {
    appendContent: 1,
    getContext: 2,
    lookupWithFallback: 3,
    lookup: 4,
    append: 5,
    invokeMustache: 6,
    appendEscaped: 7,
    pushString: 8,
    truthyOrFallback: 9,
    functionOrFallback: 10,
    invokeProgram: 11,
    invokePartial: 12,
    push: 13,
    invokeInverse: 14
  };

  Compiler.MULTI_PARAM_OPCODES = {
    appendContent: 1,
    getContext: 1,
    lookupWithFallback: 1,
    lookup: 1,
    invokeMustache: 2,
    pushString: 1,
    truthyOrFallback: 1,
    functionOrFallback: 1,
    invokeProgram: 2,
    invokePartial: 1,
    push: 1,
    invokeInverse: 1
  };

  Compiler.DISASSEMBLE_MAP = {};

  for(var prop in Compiler.OPCODE_MAP) {
    var value = Compiler.OPCODE_MAP[prop];
    Compiler.DISASSEMBLE_MAP[value] = prop;
  }

  Compiler.multiParamSize = function(code) {
    return Compiler.MULTI_PARAM_OPCODES[Compiler.DISASSEMBLE_MAP[code]];
  };

  Compiler.prototype = {
    disassemble: function() {
      var opcodes = this.opcodes, opcode, nextCode;
      var out = [], str, name, value;

      for(var i=0, l=opcodes.length; i<l; i++) {
        opcode = opcodes[i];

        if(opcode === 'DECLARE') {
          name = opcodes[++i];
          value = opcodes[++i];
          out.push("DECLARE " + name + " = " + value);
        } else {
          str = Compiler.DISASSEMBLE_MAP[opcode];

          var extraParams = Compiler.multiParamSize(opcode);
          var codes = [];

          for(var j=0; j<extraParams; j++) {
            nextCode = opcodes[++i];

            if(typeof nextCode === "string") {
              nextCode = "\"" + nextCode.replace("\n", "\\n") + "\"";
            }

            codes.push(nextCode);
          }

          str = str + " " + codes.join(" ");

          out.push(str);
        }
      }

      return out.join("\n");
    },

    guid: 0,

    compile: function(program) {
      this.children = [];
      this.depths = {list: []};
      return this.program(program);
    },

    accept: function(node) {
      return this[node.type](node);
    },

    program: function(program) {
      var statements = program.statements, statement;
      this.opcodes = [];

      for(var i=0, l=statements.length; i<l; i++) {
        statement = statements[i];
        this[statement.type](statement);
      }

      this.depths.list = this.depths.list.sort(function(a, b) {
        return a - b;
      });

      return this;
    },

    compileProgram: function(program) {
      var result = new Compiler().compile(program);
      var guid = this.guid++;

      this.usePartial = this.usePartial || result.usePartial;

      this.children[guid] = result;

      for(var i=0, l=result.depths.list.length; i<l; i++) {
        depth = result.depths.list[i];

        if(depth < 2) { continue; }
        else { this.addDepth(depth - 1); }
      }

      return guid;
    },

    block: function(block) {
      var mustache = block.mustache;
      var params = mustache.params, depth, child, inverse, inverseGuid;

      this.pushParams(params);

      // ID lookup is now on the stack
      this.ID(mustache.id);

      var programGuid = this.compileProgram(block.program);

      if(block.program.inverse) {
        inverseGuid = this.compileProgram(block.program.inverse);
      }

      if(block.program.inverse) {
        this.declare('inverse', inverseGuid);
      }

      this.opcode('invokeProgram', programGuid, params.length);
      this.declare('inverse', null);
      this.opcode('append');
    },

    inverse: function(block) {
      this.ID(block.mustache.id);
      var programGuid = this.compileProgram(block.program);

      this.opcode('invokeInverse', programGuid);
      this.opcode('append');
    },

    partial: function(partial) {
      var id = partial.id;
      this.usePartial = true;

      if(partial.context) {
        this.ID(partial.context);
      } else {
        this.opcode('push', 'context');
      }

      this.opcode('invokePartial', id.original);
      this.opcode('append');
    },

    content: function(content) {
      this.opcode('appendContent', content.string);
    },

    mustache: function(mustache) {
      var params = mustache.params;

      this.pushParams(params);
      this.ID(mustache.id);

      this.opcode('invokeMustache', params.length, mustache.id.original);

      if(mustache.escaped) {
        this.opcode('appendEscaped');
      } else {
        this.opcode('append');
      }
    },

    ID: function(id) {
      this.addDepth(id.depth);

      this.opcode('getContext', id.depth);

      this.opcode('lookupWithFallback', id.parts[0] || null);

      for(var i=1, l=id.parts.length; i<l; i++) {
        this.opcode('lookup', id.parts[i]);
      }
    },

    STRING: function(string) {
      this.opcode('pushString', string.string);
    },

    comment: function() {},

    pushParams: function(params) {
      var i = params.length, param;

      while(i--) {
        param = params[i];
        this[param.type](param);
      }
    },

    opcode: function(name, val1, val2) {
      this.opcodes.push(Compiler.OPCODE_MAP[name]);
      if(val1 !== undefined) { this.opcodes.push(val1); }
      if(val2 !== undefined) { this.opcodes.push(val2); }
    },

    declare: function(name, value) {
      this.opcodes.push('DECLARE');
      this.opcodes.push(name);
      this.opcodes.push(value);
    },

    addDepth: function(depth) {
      if(depth === 0) { return; }

      if(!this.depths[depth]) {
        this.depths[depth] = true;
        this.depths.list.push(depth);
      }
    }
  };

  JavaScriptCompiler.prototype = {
    // PUBLIC API: You can override these methods in a subclass to provide
    // alternative compiled forms for name lookup and buffering semantics
    nameLookup: function(parent, name, type) {
      if(JavaScriptCompiler.RESERVED_WORDS[name]) {
        return parent + "['" + name + "']";
      } else {
        return parent + "." + name;
      }
    },

    appendToBuffer: function(string) {
      return "buffer = buffer + " + string + ";";
    },

    initializeBuffer: function() {
      return this.quotedString("");
    },
    // END PUBLIC API

    compile: function(environment, data) {
      this.environment = environment;
      this.data = data;

      this.preamble();

      this.stackSlot = 0;
      this.stackVars = [];
      this.registers = {list: []};

      this.compileChildren(environment, data);

      Handlebars.log(Handlebars.logger.DEBUG, environment.disassemble() + "\n\n");

      var opcodes = environment.opcodes, opcode, name, declareName, declareVal;

      this.i = 0;

      for(l=opcodes.length; this.i<l; this.i++) {
        opcode = this.nextOpcode(0);

        if(opcode[0] === 'DECLARE') {
          this.i = this.i + 2;
          this[opcode[1]] = opcode[2];
        } else {
          this.i = this.i + opcode[1].length;
          this[opcode[0]].apply(this, opcode[1]);
        }
      }

      return this.createFunction();
    },

    nextOpcode: function(n) {
      var opcodes = this.environment.opcodes, opcode = opcodes[this.i + n], name, val;
      var extraParams, codes;

      if(opcode === 'DECLARE') {
        name = opcodes[this.i + 1];
        val  = opcodes[this.i + 2];
        return ['DECLARE', name, val];
      } else {
        name = Compiler.DISASSEMBLE_MAP[opcode];

        extraParams = Compiler.multiParamSize(opcode);
        codes = [];

        for(var j=0; j<extraParams; j++) {
          codes.push(opcodes[this.i + j + 1 + n]);
        }

        return [name, codes];
      }
    },

    eat: function(opcode) {
      this.i = this.i + opcode.length;
    },

    preamble: function() {
      var out = [];
      out.push("var buffer = " + this.initializeBuffer() + ", currentContext = context");

      var copies = "helpers = helpers || Handlebars.helpers;";
      if(this.environment.usePartial) { copies = copies + " partials = partials || Handlebars.partials;"; }
      out.push(copies);

      // track the last context pushed into place to allow skipping the
      // getContext opcode when it would be a noop
      this.lastContext = 0;
      this.source = out;
    },

    createFunction: function() {
      var container = {
        escapeExpression: Handlebars.Utils.escapeExpression,
        invokePartial: Handlebars.VM.invokePartial,
        programs: [],
        program: function(i, helpers, partials, data) {
          var programWrapper = this.programs[i];
          if(data) {
            return Handlebars.VM.program(this.children[i], helpers, partials, data);
          } else if(programWrapper) {
            return programWrapper;
          } else {
            programWrapper = this.programs[i] = Handlebars.VM.program(this.children[i], helpers, partials);
            return programWrapper;
          }
        },
        programWithDepth: Handlebars.VM.programWithDepth,
        noop: Handlebars.VM.noop
      };
      var locals = this.stackVars.concat(this.registers.list);

      if(locals.length > 0) {
        this.source[0] = this.source[0] + ", " + locals.join(", ");
      }

      this.source[0] = this.source[0] + ";";

      this.source.push("return buffer;");

      var params = ["Handlebars", "context", "helpers", "partials"];

      if(this.data) { params.push("data"); }

      for(var i=0, l=this.environment.depths.list.length; i<l; i++) {
        params.push("depth" + this.environment.depths.list[i]);
      }


      if(params.length === 4 && !this.environment.usePartial) { params.pop(); }

      params.push(this.source.join("\n"));

      var fn = Function.apply(this, params);
      fn.displayName = "Handlebars.js";

      Handlebars.log(Handlebars.logger.DEBUG, fn.toString() + "\n\n");

      container.render = fn;

      container.children = this.environment.children;

      return function(context, helpers, partials, data, $depth) {
        try {
          var args = Array.prototype.slice.call(arguments);
          args.unshift(Handlebars);
          return container.render.apply(container, args);
        } catch(e) {
          throw e;
        }
      };
    },

    appendContent: function(content) {
      this.source.push(this.appendToBuffer(this.quotedString(content)));
    },

    append: function() {
      var local = this.popStack();
      this.source.push("if(" + local + " || " + local + " === 0) { " + this.appendToBuffer(local) + " }");
    },

    appendEscaped: function() {
      var opcode = this.nextOpcode(1), extra = "";

      if(opcode[0] === 'appendContent') {
        extra = " + " + this.quotedString(opcode[1][0]);
        this.eat(opcode);
      }

      this.source.push(this.appendToBuffer("this.escapeExpression(" + this.popStack() + ")" + extra));
    },

    getContext: function(depth) {
      if(this.lastContext !== depth) {
        this.lastContext = depth;

        if(depth === 0) {
          this.source.push("currentContext = context;");
        } else {
          this.source.push("currentContext = depth" + depth + ";");
        }
      }
    },

    lookupWithFallback: function(name) {
      if(name) {
        this.pushStack(this.nameLookup('currentContext', name, 'context'));
        var topStack = this.topStack();
        this.source.push("if(" + topStack + " === undefined) { " + topStack + " = " + this.nameLookup('helpers', name, 'helper') + "; }");
      } else {
        this.pushStack("currentContext");
      }
    },

    lookup: function(name) {
      var topStack = this.topStack();
      this.source.push(topStack + " = " + this.nameLookup(topStack, name, 'context') + ";");
    },

    pushString: function(string) {
      this.pushStack(this.quotedString(string));
    },

    push: function(name) {
      this.pushStack(name);
    },

    invokeMustache: function(paramSize, original) {
      var params = ["context"], fn, slot;

      fn = this.popStack();

      for(var i=0; i<paramSize; i++) {
        params.push(this.popStack());
      }

      if(this.data) { params.push("data"); }

      var paramString = params.join(", ");
      var helperMissing = ["context"].concat(this.quotedString(original)).concat(params.slice(1));

      slot = this.nextStack();

      if(paramSize === 0) {
        // TODO: This case is not listed in the mustache spec. Is it important?
        this.source.push("if(typeof " + fn + " === 'function') { " + slot + " = " + fn + ".call(" + paramString + "); }");
      } else {
        this.source.push("if(typeof " + fn + " === 'function') { " + slot + " = " + fn + ".call(" + paramString + "); } else { " + slot + " = helpers.helperMissing.call(" + helperMissing + ") }");
      }
    },

    invokeProgram: function(guid, paramSize) {
      var inverse = this.programExpression(this.inverse);

      var fn = this.popStack();
      var id = fn;

      var params = ["context"];
      var blockMissingParams = ["context", id];

      for(var i=0; i<paramSize; i++) {
        var param = this.popStack();
        params.push(param);
        blockMissingParams.push(param);
      }

      var mainProgram = this.programExpression(guid);

      params.push(mainProgram, inverse);
      blockMissingParams.push(mainProgram, inverse);

      if(this.data) {
        params.push("data");
        blockMissingParams.push("data");
      }

      var nextStack = this.nextStack();

      this.source.push("if(typeof " + id + " === 'function') { " + nextStack + " = " + id + ".call(" + params.join(", ") + "); }");
      this.source.push("else { " + nextStack + " = helpers.blockHelperMissing.call(" + blockMissingParams.join(", ") + "); }");
    },

    invokeInverse: function(guid) {
      var program = this.programExpression(guid);

      var blockMissingParams = ["context", this.topStack(), "this.noop", program];
      this.pushStack("helpers.blockHelperMissing.call(" + blockMissingParams.join(", ") + ")");
    },

    invokePartial: function(context) {
      this.pushStack("this.invokePartial(" + this.nameLookup('partials', context, 'partial') + ", '" + context + "', " + this.popStack() + ", helpers, partials);");
    },

    // HELPERS

    compiler: JavaScriptCompiler,

    compileChildren: function(environment, data) {
      var children = environment.children, child, compiler;
      var compiled = [];

      for(var i=0, l=children.length; i<l; i++) {
        child = children[i];
        compiler = new this.compiler();

        compiled[i] = compiler.compile(child, data);
      }

      environment.rawChildren = children;
      environment.children = compiled;
    },

    programExpression: function(guid) {
      if(guid == null) { return "this.noop"; }

      var programParams = [guid, "helpers", "partials"];

      var depths = this.environment.rawChildren[guid].depths.list;

      if(this.data) { programParams.push("data"); }

      for(var i=0, l = depths.length; i<l; i++) {
        depth = depths[i];

        if(depth === 1) { programParams.push("context"); }
        else { programParams.push("depth" + (depth - 1)); }
      }

      if(!this.environment.usePartial) {
        if(programParams[3]) {
          programParams[2] = "null";
        } else {
          programParams.pop();
        }
      }

      if(depths.length === 0) {
        return "this.program(" + programParams.join(", ") + ")";
      } else {
        programParams[0] = "this.children[" + guid + "]";
        return "this.programWithDepth(" + programParams.join(", ") + ")";
      }
    },

    register: function(name, val) {
      this.useRegister(name);
      this.source.push(name + " = " + val + ";");
    },

    useRegister: function(name) {
      if(!this.registers[name]) {
        this.registers[name] = true;
        this.registers.list.push(name);
      }
    },

    pushStack: function(item) {
      this.source.push(this.nextStack() + " = " + item + ";");
      return "stack" + this.stackSlot;
    },

    nextStack: function() {
      this.stackSlot++;
      if(this.stackSlot > this.stackVars.length) { this.stackVars.push("stack" + this.stackSlot); }
      return "stack" + this.stackSlot;
    },

    popStack: function() {
      return "stack" + this.stackSlot--;
    },

    topStack: function() {
      return "stack" + this.stackSlot;
    },

    quotedString: function(str) {
      return '"' + str
        .replace(/\\/g, '\\\\')
        .replace(/"/g, '\\"')
        .replace(/\n/g, '\\n')
        .replace(/\r/g, '\\r') + '"';
    }
  };

  var reservedWords = ("break case catch continue default delete do else finally " +
                       "for function if in instanceof new return switch this throw " + 
                       "try typeof var void while with null true false").split(" ");

  compilerWords = JavaScriptCompiler.RESERVED_WORDS = {};

  for(var i=0, l=reservedWords.length; i<l; i++) {
    compilerWords[reservedWords[i]] = true;
  }

})(Handlebars.Compiler, Handlebars.JavaScriptCompiler);

Handlebars.VM = {
  programWithDepth: function(fn) {
    var args = Array.prototype.slice.call(arguments, 1);
    return function(context) {
      return fn.apply(this, [context].concat(args));
    };
  },
  program: function(fn, helpers, partials, data) {
    return function(context) {
      return fn(context, helpers, partials, data);
    };
  },
  noop: function() { return ""; },
  compile: function(string, data) {
    var ast = Handlebars.parse(string);
    var environment = new Handlebars.Compiler().compile(ast);
    return new Handlebars.JavaScriptCompiler().compile(environment, data);
  },
  invokePartial: function(partial, name, context, helpers, partials) {
    if(partial === undefined) {
      throw new Handlebars.Exception("The partial " + name + " could not be found");
    } else if(partial instanceof Function) {
      return partial(context, helpers, partials);
    } else {
      partials[name] = Handlebars.VM.compile(partial);
      return partials[name](context, helpers, partials);
    }
  }
};

Handlebars.compile = Handlebars.VM.compile;;