requirejs-dustjs/test/main-built.js

A requirejs plugin for loading and compiling dustjs templates.

//
// Dust - Asynchronous Templating v2.2.2
// http://akdubya.github.com/dustjs
//
// Copyright (c) 2010, Aleksander Williams
// Released under the MIT License.
//

/*global console */
var dust = {};

function getGlobal(){
  return (function(){
    return this.dust;
  }).call(null);
}

(function(dust) {

  if(!dust) {
    return;
  }
  var ERROR = 'ERROR',
      WARN = 'WARN',
      INFO = 'INFO',
      DEBUG = 'DEBUG',
      levels = [DEBUG, INFO, WARN, ERROR],
      logger = function() {};

  dust.isDebug = false;
  dust.debugLevel = INFO;

  // Try to find the console logger in window scope (browsers) or top level scope (node.js)
  if (typeof window !== 'undefined' && window && window.console && window.console.log) {
    logger = window.console.log;
  } else if (typeof console !== 'undefined' && console && console.log) {
    logger = console.log;
  }

  /**
   * If dust.isDebug is true, Log dust debug statements, info statements, warning statements, and errors.
   * This default implementation will print to the console if it exists.
   * @param {String} message the message to print
   * @param {String} type the severity of the message(ERROR, WARN, INFO, or DEBUG)
   * @public
   */
  dust.log = function(message, type) {
    var type = type || INFO;
    if(dust.isDebug && levels.indexOf(type) >= levels.indexOf(dust.debugLevel)) {
      if(!dust.logQueue) {
        dust.logQueue = [];
      }
      dust.logQueue.push({message: message, type: type});
      logger.call(console || window.console, '[DUST ' + type + ']: ' + message);
    }
  };

  /**
   * If debugging is turned on(dust.isDebug=true) log the error message and throw it.
   * Otherwise try to keep rendering.  This is useful to fail hard in dev mode, but keep rendering in production.
   * @param {Error} error the error message to throw
   * @param {Object} chunk the chunk the error was thrown from
   * @public
   */
  dust.onError = function(error, chunk) {
    dust.log(error.message || error, ERROR);
    if(dust.isDebug) {
      throw error;
    } else {
      return chunk;
    }
  };

  dust.helpers = {};

  dust.cache = {};

  dust.register = function(name, tmpl) {
    if (!name) {
      return;
    }
    dust.cache[name] = tmpl;
  };

  dust.render = function(name, context, callback) {
    var chunk = new Stub(callback).head;
    try {
      dust.load(name, chunk, Context.wrap(context, name)).end();
    } catch (err) {
      dust.onError(err, chunk);
    }
  };

  dust.stream = function(name, context) {
    var stream = new Stream();
    dust.nextTick(function() {
      try {
        dust.load(name, stream.head, Context.wrap(context, name)).end();
      } catch (err) {
        dust.onError(err, stream.head);
      }
    });
    return stream;
  };

  dust.renderSource = function(source, context, callback) {
    return dust.compileFn(source)(context, callback);
  };

  dust.compileFn = function(source, name) {
    var tmpl = dust.loadSource(dust.compile(source, name));
    return function(context, callback) {
      var master = callback ? new Stub(callback) : new Stream();
      dust.nextTick(function() {
        if(typeof tmpl === 'function') {
          tmpl(master.head, Context.wrap(context, name)).end();
        }
        else {
          dust.onError(new Error('Template [' + name + '] cannot be resolved to a Dust function'));
        }
      });
      return master;
    };
  };

  dust.load = function(name, chunk, context) {
    var tmpl = dust.cache[name];
    if (tmpl) {
      return tmpl(chunk, context);
    } else {
      if (dust.onLoad) {
        return chunk.map(function(chunk) {
          dust.onLoad(name, function(err, src) {
            if (err) {
              return chunk.setError(err);
            }
            if (!dust.cache[name]) {
              dust.loadSource(dust.compile(src, name));
            }
            dust.cache[name](chunk, context).end();
          });
        });
      }
      return chunk.setError(new Error('Template Not Found: ' + name));
    }
  };

  dust.loadSource = function(source, path) {
    return eval(source);
  };

  if (Array.isArray) {
    dust.isArray = Array.isArray;
  } else {
    dust.isArray = function(arr) {
      return Object.prototype.toString.call(arr) === '[object Array]';
    };
  }

  dust.nextTick = (function() {
    if (typeof process !== 'undefined') {
      return process.nextTick;
    } else {
      return function(callback) {
        setTimeout(callback,0);
      };
    }
  } )();

  dust.isEmpty = function(value) {
    if (dust.isArray(value) && !value.length) {
      return true;
    }
    if (value === 0) {
      return false;
    }
    return (!value);
  };

  // apply the filter chain and return the output string
  dust.filter = function(string, auto, filters) {
    if (filters) {
      for (var i=0, len=filters.length; i<len; i++) {
        var name = filters[i];
        if (name === 's') {
          auto = null;
          dust.log('Using unescape filter on [' + string + ']', DEBUG);
        }
        else if (typeof dust.filters[name] === 'function') {
          string = dust.filters[name](string);
        }
        else {
          dust.onError(new Error('Invalid filter [' + name + ']'));
        }
      }
    }
    // by default always apply the h filter, unless asked to unescape with |s
    if (auto) {
      string = dust.filters[auto](string);
    }
    return string;
  };

  dust.filters = {
    h: function(value) { return dust.escapeHtml(value); },
    j: function(value) { return dust.escapeJs(value); },
    u: encodeURI,
    uc: encodeURIComponent,
    js: function(value) {
      if (!JSON) {
        dust.log('JSON is undefined.  JSON stringify has not been used on [' + value + ']', WARN);
        return value;
      } else {
        return JSON.stringify(value);
      }
    },
    jp: function(value) {
      if (!JSON) {dust.log('JSON is undefined.  JSON parse has not been used on [' + value + ']', WARN);
        return value;
      } else {
        return JSON.parse(value);
      }
    }
  };

  function Context(stack, global, blocks, templateName) {
    this.stack  = stack;
    this.global = global;
    this.blocks = blocks;
    this.templateName = templateName;
  }

  dust.makeBase = function(global) {
    return new Context(new Stack(), global);
  };

  Context.wrap = function(context, name) {
    if (context instanceof Context) {
      return context;
    }
    return new Context(new Stack(context), {}, null, name);
  };

  /**
   * Public API for getting a value from the context.
   * @method get
   * @param {string|array} path The path to the value. Supported formats are:
   * 'key'
   * 'path.to.key'
   * '.path.to.key'
   * ['path', 'to', 'key']
   * ['key']
   * @param {boolean} [cur=false] Boolean which determines if the search should be limited to the
   * current context (true), or if get should search in parent contexts as well (false).
   * @public
   * @returns {string|object}
   */
  Context.prototype.get = function(path, cur) {
    if (typeof path === 'string') {
      if (path[0] === '.') {
        cur = true;
        path = path.substr(1);
      }
      path = path.split('.');
    }
    return this._get(cur, path);
  };

  /**
   * Get a value from the context
   * @method _get
   * @param {boolean} cur Get only from the current context
   * @param {array} down An array of each step in the path
   * @private
   * @return {string | object}
   */
  Context.prototype._get = function(cur, down) {
    var ctx = this.stack,
        i = 1,
        value, first, len, ctxThis;
    dust.log('Searching for reference [{' + down.join('.') + '}] in template [' + this.getTemplateName() + ']', DEBUG);
    first = down[0];
    len = down.length;

    if (cur && len === 0) {
      ctxThis = ctx;
      ctx = ctx.head;
    } else {
      if (!cur) {
        // Search up the stack for the first value
        while (ctx) {
          if (ctx.isObject) {
            ctxThis = ctx.head;
            value = ctx.head[first];
            if (value !== undefined) {
              break;
            }
          }
          ctx = ctx.tail;
        }

        if (value !== undefined) {
          ctx = value;
        } else {
          ctx = this.global ? this.global[first] : undefined;
        }
      } else {
        // if scope is limited by a leading dot, don't search up the tree
        ctx = ctx.head[first];
      }

      while (ctx && i < len) {
        ctxThis = ctx;
        ctx = ctx[down[i]];
        i++;
      }
    }

    // Return the ctx or a function wrapping the application of the context.
    if (typeof ctx === 'function') {
      var fn = function() {
        return ctx.apply(ctxThis, arguments);
      };
      fn.isFunction = true;
      return fn;
    } else {
      if (ctx === undefined) {
        dust.log('Cannot find the value for reference [{' + down.join('.') + '}] in template [' + this.getTemplateName() + ']');
      }
      return ctx;
    }
  };

  Context.prototype.getPath = function(cur, down) {
    return this._get(cur, down);
  };

  Context.prototype.push = function(head, idx, len) {
    return new Context(new Stack(head, this.stack, idx, len), this.global, this.blocks, this.getTemplateName());
  };

  Context.prototype.rebase = function(head) {
    return new Context(new Stack(head), this.global, this.blocks, this.getTemplateName());
  };

  Context.prototype.current = function() {
    return this.stack.head;
  };

  Context.prototype.getBlock = function(key, chk, ctx) {
    if (typeof key === 'function') {
      var tempChk = new Chunk();
      key = key(tempChk, this).data.join('');
    }

    var blocks = this.blocks;

    if (!blocks) {
      dust.log('No blocks for context[{' + key + '}] in template [' + this.getTemplateName() + ']', DEBUG);
      return;
    }
    var len = blocks.length, fn;
    while (len--) {
      fn = blocks[len][key];
      if (fn) {
        return fn;
      }
    }
  };

  Context.prototype.shiftBlocks = function(locals) {
    var blocks = this.blocks,
        newBlocks;

    if (locals) {
      if (!blocks) {
        newBlocks = [locals];
      } else {
        newBlocks = blocks.concat([locals]);
      }
      return new Context(this.stack, this.global, newBlocks, this.getTemplateName());
    }
    return this;
  };

  Context.prototype.getTemplateName = function() {
    return this.templateName;
  }

  function Stack(head, tail, idx, len) {
    this.tail = tail;
    this.isObject = !dust.isArray(head) && head && typeof head === 'object';
    this.head = head;
    this.index = idx;
    this.of = len;
  }

  function Stub(callback) {
    this.head = new Chunk(this);
    this.callback = callback;
    this.out = '';
  }

  Stub.prototype.flush = function() {
    var chunk = this.head;

    while (chunk) {
      if (chunk.flushable) {
        this.out += chunk.data.join(''); //ie7 perf
      } else if (chunk.error) {
        this.callback(chunk.error);
        dust.onError(new Error('Chunk error [' + chunk.error + '] thrown. Ceasing to render this template.'));
        this.flush = function() {};
        return;
      } else {
        return;
      }
      chunk = chunk.next;
      this.head = chunk;
    }
    this.callback(null, this.out);
  };

  function Stream() {
    this.head = new Chunk(this);
  }

  Stream.prototype.flush = function() {
    var chunk = this.head;

    while(chunk) {
      if (chunk.flushable) {
        this.emit('data', chunk.data.join('')); //ie7 perf
      } else if (chunk.error) {
        this.emit('error', chunk.error);
        dust.onError(new Error('Chunk error [' + chunk.error + '] thrown. Ceasing to render this template.'));
        this.flush = function() {};
        return;
      } else {
        return;
      }
      chunk = chunk.next;
      this.head = chunk;
    }
    this.emit('end');
  };

  Stream.prototype.emit = function(type, data) {
    if (!this.events) {
      dust.log('No events to emit', INFO);
      return false;
    }
    var handler = this.events[type];
    if (!handler) {
      dust.log('Event type [' + type + '] does not exist', WARN);
      return false;
    }
    if (typeof handler === 'function') {
      handler(data);
    } else if (dust.isArray(handler)) {
      var listeners = handler.slice(0);
      for (var i = 0, l = listeners.length; i < l; i++) {
        listeners[i](data);
      }
    } else {
      dust.onError(new Error('Event Handler [' + handler + '] is not of a type that is handled by emit'));
    }
  };

  Stream.prototype.on = function(type, callback) {
    if (!this.events) {
      this.events = {};
    }
    if (!this.events[type]) {
      dust.log('Event type [' + type + '] does not exist. Using just the specified callback.', WARN);
      if(callback) {
        this.events[type] = callback;
      } else {
        dust.log('Callback for type [' + type + '] does not exist. Listener not registered.', WARN);
      }
    } else if(typeof this.events[type] === 'function') {
      this.events[type] = [this.events[type], callback];
    } else {
      this.events[type].push(callback);
    }
    return this;
  };

  Stream.prototype.pipe = function(stream) {
    this.on('data', function(data) {
      try {
        stream.write(data, 'utf8');
      } catch (err) {
        dust.onError(err, stream.head);
      }
    }).on('end', function() {
      try {
        return stream.end();
      } catch (err) {
        dust.onError(err, stream.head);
      }
    }).on('error', function(err) {
      stream.error(err);
    });
    return this;
  };

  function Chunk(root, next, taps) {
    this.root = root;
    this.next = next;
    this.data = []; //ie7 perf
    this.flushable = false;
    this.taps = taps;
  }

  Chunk.prototype.write = function(data) {
    var taps  = this.taps;

    if (taps) {
      data = taps.go(data);
    }
    this.data.push(data);
    return this;
  };

  Chunk.prototype.end = function(data) {
    if (data) {
      this.write(data);
    }
    this.flushable = true;
    this.root.flush();
    return this;
  };

  Chunk.prototype.map = function(callback) {
    var cursor = new Chunk(this.root, this.next, this.taps),
        branch = new Chunk(this.root, cursor, this.taps);

    this.next = branch;
    this.flushable = true;
    callback(branch);
    return cursor;
  };

  Chunk.prototype.tap = function(tap) {
    var taps = this.taps;

    if (taps) {
      this.taps = taps.push(tap);
    } else {
      this.taps = new Tap(tap);
    }
    return this;
  };

  Chunk.prototype.untap = function() {
    this.taps = this.taps.tail;
    return this;
  };

  Chunk.prototype.render = function(body, context) {
    return body(this, context);
  };

  Chunk.prototype.reference = function(elem, context, auto, filters) {
    if (typeof elem === 'function') {
      elem.isFunction = true;
      // Changed the function calling to use apply with the current context to make sure
      // that "this" is wat we expect it to be inside the function
      elem = elem.apply(context.current(), [this, context, null, {auto: auto, filters: filters}]);
      if (elem instanceof Chunk) {
        return elem;
      }
    }
    if (!dust.isEmpty(elem)) {
      return this.write(dust.filter(elem, auto, filters));
    } else {
      return this;
    }
  };

  Chunk.prototype.section = function(elem, context, bodies, params) {
    // anonymous functions
    if (typeof elem === 'function') {
      elem = elem.apply(context.current(), [this, context, bodies, params]);
      // functions that return chunks are assumed to have handled the body and/or have modified the chunk
      // use that return value as the current chunk and go to the next method in the chain
      if (elem instanceof Chunk) {
        return elem;
      }
    }
    var body = bodies.block,
        skip = bodies['else'];

    // a.k.a Inline parameters in the Dust documentations
    if (params) {
      context = context.push(params);
    }

    /*
    Dust's default behavior is to enumerate over the array elem, passing each object in the array to the block.
    When elem resolves to a value or object instead of an array, Dust sets the current context to the value
    and renders the block one time.
    */
    //non empty array is truthy, empty array is falsy
    if (dust.isArray(elem)) {
      if (body) {
        var len = elem.length, chunk = this;
        if (len > 0) {
          // any custom helper can blow up the stack
          // and store a flattened context, guard defensively
          if(context.stack.head) {
            context.stack.head['$len'] = len;
          }
          for (var i=0; i<len; i++) {
            if(context.stack.head) {
              context.stack.head['$idx'] = i;
            }
            chunk = body(chunk, context.push(elem[i], i, len));
          }
          if(context.stack.head) {
            context.stack.head['$idx'] = undefined;
            context.stack.head['$len'] = undefined;
          }
          return chunk;
        }
        else if (skip) {
          return skip(this, context);
        }
      }
    } else if (elem  === true) {
     // true is truthy but does not change context
      if (body) {
        return body(this, context);
      }
    } else if (elem || elem === 0) {
       // everything that evaluates to true are truthy ( e.g. Non-empty strings and Empty objects are truthy. )
       // zero is truthy
       // for anonymous functions that did not returns a chunk, truthiness is evaluated based on the return value
      if (body) {
        return body(this, context.push(elem));
      }
     // nonexistent, scalar false value, scalar empty string, null,
     // undefined are all falsy
    } else if (skip) {
      return skip(this, context);
    }
    dust.log('Not rendering section (#) block in template [' + context.getTemplateName() + '], because above key was not found', DEBUG);
    return this;
  };

  Chunk.prototype.exists = function(elem, context, bodies) {
    var body = bodies.block,
        skip = bodies['else'];

    if (!dust.isEmpty(elem)) {
      if (body) {
        return body(this, context);
      }
    } else if (skip) {
      return skip(this, context);
    }
    dust.log('Not rendering exists (?) block in template [' + context.getTemplateName() + '], because above key was not found', DEBUG);
    return this;
  };

  Chunk.prototype.notexists = function(elem, context, bodies) {
    var body = bodies.block,
        skip = bodies['else'];

    if (dust.isEmpty(elem)) {
      if (body) {
        return body(this, context);
      }
    } else if (skip) {
      return skip(this, context);
    }
    dust.log('Not rendering not exists (^) block check in template [' + context.getTemplateName() + '], because above key was found', DEBUG);
    return this;
  };

  Chunk.prototype.block = function(elem, context, bodies) {
    var body = bodies.block;

    if (elem) {
      body = elem;
    }

    if (body) {
      return body(this, context);
    }
    return this;
  };

  Chunk.prototype.partial = function(elem, context, params) {
    var partialContext;
    //put the params context second to match what section does. {.} matches the current context without parameters
    // start with an empty context
    partialContext = dust.makeBase(context.global);
    partialContext.blocks = context.blocks;
    if (context.stack && context.stack.tail){
      // grab the stack(tail) off of the previous context if we have it
      partialContext.stack = context.stack.tail;
    }
    if (params){
      //put params on
      partialContext = partialContext.push(params);
    }

    if(typeof elem === 'string') {
      partialContext.templateName = elem;
    }

    //reattach the head
    partialContext = partialContext.push(context.stack.head);

    var partialChunk;
    if (typeof elem === 'function') {
      partialChunk = this.capture(elem, partialContext, function(name, chunk) {
        partialContext.templateName = partialContext.templateName || name;
        dust.load(name, chunk, partialContext).end();
      });
    } else {
      partialChunk = dust.load(elem, this, partialContext);
    }
    return partialChunk;
  };

  Chunk.prototype.helper = function(name, context, bodies, params) {
    var chunk = this;
    // handle invalid helpers, similar to invalid filters
    try {
      if(dust.helpers[name]) {
        return dust.helpers[name](chunk, context, bodies, params);
      } else {
        return dust.onError(new Error('Invalid helper [' + name + ']'), chunk);
      }
    } catch (err) {
      return dust.onError(err, chunk);
    }
  };

  Chunk.prototype.capture = function(body, context, callback) {
    return this.map(function(chunk) {
      var stub = new Stub(function(err, out) {
        if (err) {
          chunk.setError(err);
        } else {
          callback(out, chunk);
        }
      });
      body(stub.head, context).end();
    });
  };

  Chunk.prototype.setError = function(err) {
    this.error = err;
    this.root.flush();
    return this;
  };

  function Tap(head, tail) {
    this.head = head;
    this.tail = tail;
  }

  Tap.prototype.push = function(tap) {
    return new Tap(tap, this);
  };

  Tap.prototype.go = function(value) {
    var tap = this;

    while(tap) {
      value = tap.head(value);
      tap = tap.tail;
    }
    return value;
  };

  var HCHARS = new RegExp(/[&<>\"\']/),
      AMP    = /&/g,
      LT     = /</g,
      GT     = />/g,
      QUOT   = /\"/g,
      SQUOT  = /\'/g;

  dust.escapeHtml = function(s) {
    if (typeof s === 'string') {
      if (!HCHARS.test(s)) {
        return s;
      }
      return s.replace(AMP,'&amp;').replace(LT,'&lt;').replace(GT,'&gt;').replace(QUOT,'&quot;').replace(SQUOT, '&#39;');
    }
    return s;
  };

  var BS = /\\/g,
      FS = /\//g,
      CR = /\r/g,
      LS = /\u2028/g,
      PS = /\u2029/g,
      NL = /\n/g,
      LF = /\f/g,
      SQ = /'/g,
      DQ = /"/g,
      TB = /\t/g;

  dust.escapeJs = function(s) {
    if (typeof s === 'string') {
      return s
        .replace(BS, '\\\\')
        .replace(FS, '\\/')
        .replace(DQ, '\\"')
        .replace(SQ, '\\\'')
        .replace(CR, '\\r')
        .replace(LS, '\\u2028')
        .replace(PS, '\\u2029')
        .replace(NL, '\\n')
        .replace(LF, '\\f')
        .replace(TB, '\\t');
    }
    return s;
  };

})(dust);

if (typeof exports !== 'undefined') {
  if (typeof process !== 'undefined') {
    require('./server')(dust);
  }
  module.exports = dust;
}

var dustCompiler = (function(dust) {

dust.compile = function(source, name) {
  try {
    var ast = filterAST(dust.parse(source));
    return compile(ast, name);
  }
  catch (err)
  {
    if (!err.line || !err.column) {
      throw err;
    }
    throw new SyntaxError(err.message + " At line : " + err.line + ", column : " + err.column);
  }
};

function filterAST(ast) {
  var context = {};
  return dust.filterNode(context, ast);
};

dust.filterNode = function(context, node) {
  return dust.optimizers[node[0]](context, node);
};

dust.optimizers = {
  body:      compactBuffers,
  buffer:    noop,
  special:   convertSpecial,
  format:    nullify,        // TODO: convert format
  reference: visit,
  "#":       visit,
  "?":       visit,
  "^":       visit,
  "<":       visit,
  "+":       visit,
  "@":       visit,
  "%":       visit,
  partial:   visit,
  context:   visit,
  params:    visit,
  bodies:    visit,
  param:     visit,
  filters:   noop,
  key:       noop,
  path:      noop,
  literal:   noop,
  comment:   nullify,
  line:      nullify,
  col:       nullify
};

dust.pragmas = {
  esc: function(compiler, context, bodies, params) {
    var old = compiler.auto,
        out;
    if (!context) {
      context = 'h';
    }
    compiler.auto = (context === 's') ? '' : context;
    out = compileParts(compiler, bodies.block);
    compiler.auto = old;
    return out;
  }
};

function visit(context, node) {
  var out = [node[0]],
      i, len, res;
  for (i=1, len=node.length; i<len; i++) {
    res = dust.filterNode(context, node[i]);
    if (res) {
      out.push(res);
    }
  }
  return out;
};

// Compacts consecutive buffer nodes into a single node
function compactBuffers(context, node) {
  var out = [node[0]],
      memo, i, len, res;
  for (i=1, len=node.length; i<len; i++) {
    res = dust.filterNode(context, node[i]);
    if (res) {
      if (res[0] === 'buffer') {
        if (memo) {
          memo[1] += res[1];
        } else {
          memo = res;
          out.push(res);
        }
      } else {
        memo = null;
        out.push(res);
      }
    }
  }
  return out;
};

var specialChars = {
  "s": " ",
  "n": "\n",
  "r": "\r",
  "lb": "{",
  "rb": "}"
};

function convertSpecial(context, node) {
  return ['buffer', specialChars[node[1]]]
};

function noop(context, node) {
  return node
};

function nullify(){};

function compile(ast, name) {
  var context = {
    name: name,
    bodies: [],
    blocks: {},
    index: 0,
    auto: "h"
  }

  return "(function(){dust.register("
    + (name ? "\"" + name + "\"" : "null") + ","
    + dust.compileNode(context, ast)
    + ");"
    + compileBlocks(context)
    + compileBodies(context)
    + "return body_0;"
    + "})();";
};

function compileBlocks(context) {
  var out = [],
      blocks = context.blocks,
      name;

  for (name in blocks) {
    out.push("'" + name + "':" + blocks[name]);
  }
  if (out.length) {
    context.blocks = "ctx=ctx.shiftBlocks(blocks);";
    return "var blocks={" + out.join(',') + "};";
  }
  return context.blocks = "";
};

function compileBodies(context) {
  var out = [],
      bodies = context.bodies,
      blx = context.blocks,
      i, len;

  for (i=0, len=bodies.length; i<len; i++) {
    out[i] = "function body_" + i + "(chk,ctx){"
      + blx + "return chk" + bodies[i] + ";}";
  }
  return out.join('');
};

function compileParts(context, body) {
  var parts = '',
      i, len;
  for (i=1, len=body.length; i<len; i++) {
    parts += dust.compileNode(context, body[i]);
  }
  return parts;
};

dust.compileNode = function(context, node) {
  return dust.nodes[node[0]](context, node);
};

dust.nodes = {
  body: function(context, node) {
    var id = context.index++,
        name = "body_" + id;
    context.bodies[id] = compileParts(context, node);
    return name;
  },

  buffer: function(context, node) {
    return ".write(" + escape(node[1]) + ")";
  },

  format: function(context, node) {
    return ".write(" + escape(node[1] + node[2]) + ")";
  },

  reference: function(context, node) {
    return ".reference(" + dust.compileNode(context, node[1])
      + ",ctx," + dust.compileNode(context, node[2]) + ")";
  },

  "#": function(context, node) {
    return compileSection(context, node, "section");
  },

  "?": function(context, node) {
    return compileSection(context, node, "exists");
  },

  "^": function(context, node) {
    return compileSection(context, node, "notexists");
  },

  "<": function(context, node) {
    var bodies = node[4];
    for (var i=1, len=bodies.length; i<len; i++) {
      var param = bodies[i],
          type = param[1][1];
      if (type === "block") {
        context.blocks[node[1].text] = dust.compileNode(context, param[2]);
        return '';
      }
    }
    return '';
  },

  "+": function(context, node) {
    if(typeof(node[1].text) === "undefined"  && typeof(node[4]) === "undefined"){
      return ".block(ctx.getBlock("
      + dust.compileNode(context, node[1])
      + ",chk, ctx)," + dust.compileNode(context, node[2]) + ", {},"
      + dust.compileNode(context, node[3])
      + ")";
    }else {
      return ".block(ctx.getBlock("
      + escape(node[1].text)
      + ")," + dust.compileNode(context, node[2]) + ","
      + dust.compileNode(context, node[4]) + ","
      + dust.compileNode(context, node[3])
      + ")";
    }
  },

  "@": function(context, node) {
    return ".helper("
      + escape(node[1].text)
      + "," + dust.compileNode(context, node[2]) + ","
      + dust.compileNode(context, node[4]) + ","
      + dust.compileNode(context, node[3])
      + ")";
  },

  "%": function(context, node) {
    // TODO: Move these hacks into pragma precompiler
    var name = node[1][1];
    if (!dust.pragmas[name]) return '';

    var rawBodies = node[4];
    var bodies = {};
    for (var i=1, len=rawBodies.length; i<len; i++) {
      var b = rawBodies[i];
      bodies[b[1][1]] = b[2];
    }

    var rawParams = node[3];
    var params = {};
    for (var i=1, len=rawParams.length; i<len; i++) {
      var p = rawParams[i];
      params[p[1][1]] = p[2][1];
    }

    var ctx = node[2][1] ? node[2][1].text : null;

    return dust.pragmas[name](context, ctx, bodies, params);
  },

  partial: function(context, node) {
    return ".partial("
      + dust.compileNode(context, node[1])
      + "," + dust.compileNode(context, node[2])
      + "," + dust.compileNode(context, node[3]) + ")";
  },

  context: function(context, node) {
    if (node[1]) {
      return "ctx.rebase(" + dust.compileNode(context, node[1]) + ")";
    }
    return "ctx";
  },

  params: function(context, node) {
    var out = [];
    for (var i=1, len=node.length; i<len; i++) {
      out.push(dust.compileNode(context, node[i]));
    }
    if (out.length) {
      return "{" + out.join(',') + "}";
    }
    return "null";
  },

  bodies: function(context, node) {
    var out = [];
    for (var i=1, len=node.length; i<len; i++) {
      out.push(dust.compileNode(context, node[i]));
    }
    return "{" + out.join(',') + "}";
  },

  param: function(context, node) {
    return dust.compileNode(context, node[1]) + ":" + dust.compileNode(context, node[2]);
  },

  filters: function(context, node) {
    var list = [];
    for (var i=1, len=node.length; i<len; i++) {
      var filter = node[i];
      list.push("\"" + filter + "\"");
    }
    return "\"" + context.auto + "\""
      + (list.length ? ",[" + list.join(',') + "]" : '');
  },

  key: function(context, node) {
    return "ctx._get(false, [\"" + node[1] + "\"])";
  },

  path: function(context, node) {
    var current = node[1],
        keys = node[2],
        list = [];

    for (var i=0,len=keys.length; i<len; i++) {
      if (dust.isArray(keys[i]))
        list.push(dust.compileNode(context, keys[i]));
      else
        list.push("\"" + keys[i] + "\"");
    }
    return "ctx._get(" + current + ",[" + list.join(',') + "])";
  },

  literal: function(context, node) {
    return escape(node[1]);
  }
};

function compileSection(context, node, cmd) {
  return "." + cmd + "("
    + dust.compileNode(context, node[1])
    + "," + dust.compileNode(context, node[2]) + ","
    + dust.compileNode(context, node[4]) + ","
    + dust.compileNode(context, node[3])
    + ")";
};

var escape = (typeof JSON === "undefined")
  ? function(str) { return "\"" + dust.escapeJs(str) + "\"" }
  : JSON.stringify;

  return dust;

});

if (typeof exports !== 'undefined') {
  module.exports = dustCompiler;
} else {
  dustCompiler(getGlobal());
}

(function(dust){

var parser = (function(){
  /*
   * Generated by PEG.js 0.7.0.
   *
   * http://pegjs.majda.cz/
   */

  function quote(s) {
    /*
     * ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a
     * string literal except for the closing quote character, backslash,
     * carriage return, line separator, paragraph separator, and line feed.
     * Any character may appear in the form of an escape sequence.
     *
     * For portability, we also escape escape all control and non-ASCII
     * characters. Note that "\0" and "\v" escape sequences are not used
     * because JSHint does not like the first and IE the second.
     */
     return '"' + s
      .replace(/\\/g, '\\\\')  // backslash
      .replace(/"/g, '\\"')    // closing quote character
      .replace(/\x08/g, '\\b') // backspace
      .replace(/\t/g, '\\t')   // horizontal tab
      .replace(/\n/g, '\\n')   // line feed
      .replace(/\f/g, '\\f')   // form feed
      .replace(/\r/g, '\\r')   // carriage return
      .replace(/[\x00-\x07\x0B\x0E-\x1F\x80-\uFFFF]/g, escape)
      + '"';
  }

  var result = {
    /*
     * Parses the input with a generated parser. If the parsing is successfull,
     * returns a value explicitly or implicitly specified by the grammar from
     * which the parser was generated (see |PEG.buildParser|). If the parsing is
     * unsuccessful, throws |PEG.parser.SyntaxError| describing the error.
     */
    parse: function(input, startRule) {
      var parseFunctions = {
        "body": parse_body,
        "part": parse_part,
        "section": parse_section,
        "sec_tag_start": parse_sec_tag_start,
        "end_tag": parse_end_tag,
        "context": parse_context,
        "params": parse_params,
        "bodies": parse_bodies,
        "reference": parse_reference,
        "partial": parse_partial,
        "filters": parse_filters,
        "special": parse_special,
        "identifier": parse_identifier,
        "number": parse_number,
        "float": parse_float,
        "integer": parse_integer,
        "path": parse_path,
        "key": parse_key,
        "array": parse_array,
        "array_part": parse_array_part,
        "inline": parse_inline,
        "inline_part": parse_inline_part,
        "buffer": parse_buffer,
        "literal": parse_literal,
        "esc": parse_esc,
        "comment": parse_comment,
        "tag": parse_tag,
        "ld": parse_ld,
        "rd": parse_rd,
        "lb": parse_lb,
        "rb": parse_rb,
        "eol": parse_eol,
        "ws": parse_ws
      };

      if (startRule !== undefined) {
        if (parseFunctions[startRule] === undefined) {
          throw new Error("Invalid rule name: " + quote(startRule) + ".");
        }
      } else {
        startRule = "body";
      }

      var pos = { offset: 0, line: 1, column: 1, seenCR: false };
      var reportFailures = 0;
      var rightmostFailuresPos = { offset: 0, line: 1, column: 1, seenCR: false };
      var rightmostFailuresExpected = [];

      function padLeft(input, padding, length) {
        var result = input;

        var padLength = length - input.length;
        for (var i = 0; i < padLength; i++) {
          result = padding + result;
        }

        return result;
      }

      function escape(ch) {
        var charCode = ch.charCodeAt(0);
        var escapeChar;
        var length;

        if (charCode <= 0xFF) {
          escapeChar = 'x';
          length = 2;
        } else {
          escapeChar = 'u';
          length = 4;
        }

        return '\\' + escapeChar + padLeft(charCode.toString(16).toUpperCase(), '0', length);
      }

      function clone(object) {
        var result = {};
        for (var key in object) {
          result[key] = object[key];
        }
        return result;
      }

      function advance(pos, n) {
        var endOffset = pos.offset + n;

        for (var offset = pos.offset; offset < endOffset; offset++) {
          var ch = input.charAt(offset);
          if (ch === "\n") {
            if (!pos.seenCR) { pos.line++; }
            pos.column = 1;
            pos.seenCR = false;
          } else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
            pos.line++;
            pos.column = 1;
            pos.seenCR = true;
          } else {
            pos.column++;
            pos.seenCR = false;
          }
        }

        pos.offset += n;
      }

      function matchFailed(failure) {
        if (pos.offset < rightmostFailuresPos.offset) {
          return;
        }

        if (pos.offset > rightmostFailuresPos.offset) {
          rightmostFailuresPos = clone(pos);
          rightmostFailuresExpected = [];
        }

        rightmostFailuresExpected.push(failure);
      }

      function parse_body() {
        var result0, result1;
        var pos0;

        pos0 = clone(pos);
        result0 = [];
        result1 = parse_part();
        while (result1 !== null) {
          result0.push(result1);
          result1 = parse_part();
        }
        if (result0 !== null) {
          result0 = (function(offset, line, column, p) { return ["body"].concat(p).concat([['line', line], ['col', column]]) })(pos0.offset, pos0.line, pos0.column, result0);
        }
        if (result0 === null) {
          pos = clone(pos0);
        }
        return result0;
      }

      function parse_part() {
        var result0;

        result0 = parse_comment();
        if (result0 === null) {
          result0 = parse_section();
          if (result0 === null) {
            result0 = parse_partial();
            if (result0 === null) {
              result0 = parse_special();
              if (result0 === null) {
                result0 = parse_reference();
                if (result0 === null) {
                  result0 = parse_buffer();
                }
              }
            }
          }
        }
        return result0;
      }

      function parse_section() {
        var result0, result1, result2, result3, result4, result5, result6;
        var pos0, pos1;

        reportFailures++;
        pos0 = clone(pos);
        pos1 = clone(pos);
        result0 = parse_sec_tag_start();
        if (result0 !== null) {
          result1 = [];
          result2 = parse_ws();
          while (result2 !== null) {
            result1.push(result2);
            result2 = parse_ws();
          }
          if (result1 !== null) {
            result2 = parse_rd();
            if (result2 !== null) {
              result3 = parse_body();
              if (result3 !== null) {
                result4 = parse_bodies();
                if (result4 !== null) {
                  result5 = parse_end_tag();
                  result5 = result5 !== null ? result5 : "";
                  if (result5 !== null) {
                    result6 = (function(offset, line, column, t, b, e, n) {if( (!n) || (t[1].text !== n.text) ) { throw new Error("Expected end tag for "+t[1].text+" but it was not found. At line : "+line+", column : " + column)} return true;})(pos.offset, pos.line, pos.column, result0, result3, result4, result5) ? "" : null;
                    if (result6 !== null) {
                      result0 = [result0, result1, result2, result3, result4, result5, result6];
                    } else {
                      result0 = null;
                      pos = clone(pos1);
                    }
                  } else {
                    result0 = null;
                    pos = clone(pos1);
                  }
                } else {
                  result0 = null;
                  pos = clone(pos1);
                }
              } else {
                result0 = null;
                pos = clone(pos1);
              }
            } else {
              result0 = null;
              pos = clone(pos1);
            }
          } else {
            result0 = null;
            pos = clone(pos1);
          }
        } else {
          result0 = null;
          pos = clone(pos1);
        }
        if (result0 !== null) {
          result0 = (function(offset, line, column, t, b, e, n) { e.push(["param", ["literal", "block"], b]); t.push(e); return t.concat([['line', line], ['col', column]]) })(pos0.offset, pos0.line, pos0.column, result0[0], result0[3], result0[4], result0[5]);
        }
        if (result0 === null) {
          pos = clone(pos0);
        }
        if (result0 === null) {
          pos0 = clone(pos);
          pos1 = clone(pos);
          result0 = parse_sec_tag_start();
          if (result0 !== null) {
            result1 = [];
            result2 = parse_ws();
            while (result2 !== null) {
              result1.push(result2);
              result2 = parse_ws();
            }
            if (result1 !== null) {
              if (input.charCodeAt(pos.offset) === 47) {
                result2 = "/";
                advance(pos, 1);
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("\"/\"");
                }
              }
              if (result2 !== null) {
                result3 = parse_rd();
                if (result3 !== null) {
                  result0 = [result0, result1, result2, result3];
                } else {
                  result0 = null;
                  pos = clone(pos1);
                }
              } else {
                result0 = null;
                pos = clone(pos1);
              }
            } else {
              result0 = null;
              pos = clone(pos1);
            }
          } else {
            result0 = null;
            pos = clone(pos1);
          }
          if (result0 !== null) {
            result0 = (function(offset, line, column, t) { t.push(["bodies"]); return t.concat([['line', line], ['col', column]]) })(pos0.offset, pos0.line, pos0.column, result0[0]);
          }
          if (result0 === null) {
            pos = clone(pos0);
          }
        }
        reportFailures--;
        if (reportFailures === 0 && result0 === null) {
          matchFailed("section");
        }
        return result0;
      }

      function parse_sec_tag_start() {
        var result0, result1, result2, result3, result4, result5;
        var pos0, pos1;

        pos0 = clone(pos);
        pos1 = clone(pos);
        result0 = parse_ld();
        if (result0 !== null) {
          if (/^[#?^<+@%]/.test(input.charAt(pos.offset))) {
            result1 = input.charAt(pos.offset);
            advance(pos, 1);
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("[#?^<+@%]");
            }
          }
          if (result1 !== null) {
            result2 = [];
            result3 = parse_ws();
            while (result3 !== null) {
              result2.push(result3);
              result3 = parse_ws();
            }
            if (result2 !== null) {
              result3 = parse_identifier();
              if (result3 !== null) {
                result4 = parse_context();
                if (result4 !== null) {
                  result5 = parse_params();
                  if (result5 !== null) {
                    result0 = [result0, result1, result2, result3, result4, result5];
                  } else {
                    result0 = null;
                    pos = clone(pos1);
                  }
                } else {
                  result0 = null;
                  pos = clone(pos1);
                }
              } else {
                result0 = null;
                pos = clone(pos1);
              }
            } else {
              result0 = null;
              pos = clone(pos1);
            }
          } else {
            result0 = null;
            pos = clone(pos1);
          }
        } else {
          result0 = null;
          pos = clone(pos1);
        }
        if (result0 !== null) {
          result0 = (function(offset, line, column, t, n, c, p) { return [t, n, c, p] })(pos0.offset, pos0.line, pos0.column, result0[1], result0[3], result0[4], result0[5]);
        }
        if (result0 === null) {
          pos = clone(pos0);
        }
        return result0;
      }

      function parse_end_tag() {
        var result0, result1, result2, result3, result4, result5;
        var pos0, pos1;

        reportFailures++;
        pos0 = clone(pos);
        pos1 = clone(pos);
        result0 = parse_ld();
        if (result0 !== null) {
          if (input.charCodeAt(pos.offset) === 47) {
            result1 = "/";
            advance(pos, 1);
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\"/\"");
            }
          }
          if (result1 !== null) {
            result2 = [];
            result3 = parse_ws();
            while (result3 !== null) {
              result2.push(result3);
              result3 = parse_ws();
            }
            if (result2 !== null) {
              result3 = parse_identifier();
              if (result3 !== null) {
                result4 = [];
                result5 = parse_ws();
                while (result5 !== null) {
                  result4.push(result5);
                  result5 = parse_ws();
                }
                if (result4 !== null) {
                  result5 = parse_rd();
                  if (result5 !== null) {
                    result0 = [result0, result1, result2, result3, result4, result5];
                  } else {
                    result0 = null;
                    pos = clone(pos1);
                  }
                } else {
                  result0 = null;
                  pos = clone(pos1);
                }
              } else {
                result0 = null;
                pos = clone(pos1);
              }
            } else {
              result0 = null;
              pos = clone(pos1);
            }
          } else {
            result0 = null;
            pos = clone(pos1);
          }
        } else {
          result0 = null;
          pos = clone(pos1);
        }
        if (result0 !== null) {
          result0 = (function(offset, line, column, n) { return n })(pos0.offset, pos0.line, pos0.column, result0[3]);
        }
        if (result0 === null) {
          pos = clone(pos0);
        }
        reportFailures--;
        if (reportFailures === 0 && result0 === null) {
          matchFailed("end tag");
        }
        return result0;
      }

      function parse_context() {
        var result0, result1;
        var pos0, pos1, pos2;

        pos0 = clone(pos);
        pos1 = clone(pos);
        pos2 = clone(pos);
        if (input.charCodeAt(pos.offset) === 58) {
          result0 = ":";
          advance(pos, 1);
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":\"");
          }
        }
        if (result0 !== null) {
          result1 = parse_identifier();
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = clone(pos2);
          }
        } else {
          result0 = null;
          pos = clone(pos2);
        }
        if (result0 !== null) {
          result0 = (function(offset, line, column, n) {return n})(pos1.offset, pos1.line, pos1.column, result0[1]);
        }
        if (result0 === null) {
          pos = clone(pos1);
        }
        result0 = result0 !== null ? result0 : "";
        if (result0 !== null) {
          result0 = (function(offset, line, column, n) { return n ? ["context", n] : ["context"] })(pos0.offset, pos0.line, pos0.column, result0);
        }
        if (result0 === null) {
          pos = clone(pos0);
        }
        return result0;
      }

      function parse_params() {
        var result0, result1, result2, result3, result4;
        var pos0, pos1, pos2;

        reportFailures++;
        pos0 = clone(pos);
        result0 = [];
        pos1 = clone(pos);
        pos2 = clone(pos);
        result2 = parse_ws();
        if (result2 !== null) {
          result1 = [];
          while (result2 !== null) {
            result1.push(result2);
            result2 = parse_ws();
          }
        } else {
          result1 = null;
        }
        if (result1 !== null) {
          result2 = parse_key();
          if (result2 !== null) {
            if (input.charCodeAt(pos.offset) === 61) {
              result3 = "=";
              advance(pos, 1);
            } else {
              result3 = null;
              if (reportFailures === 0) {
                matchFailed("\"=\"");
              }
            }
            if (result3 !== null) {
              result4 = parse_number();
              if (result4 === null) {
                result4 = parse_identifier();
                if (result4 === null) {
                  result4 = parse_inline();
                }
              }
              if (result4 !== null) {
                result1 = [result1, result2, result3, result4];
              } else {
                result1 = null;
                pos = clone(pos2);
              }
            } else {
              result1 = null;
              pos = clone(pos2);
            }
          } else {
            result1 = null;
            pos = clone(pos2);
          }
        } else {
          result1 = null;
          pos = clone(pos2);
        }
        if (result1 !== null) {
          result1 = (function(offset, line, column, k, v) {return ["param", ["literal", k], v]})(pos1.offset, pos1.line, pos1.column, result1[1], result1[3]);
        }
        if (result1 === null) {
          pos = clone(pos1);
        }
        while (result1 !== null) {
          result0.push(result1);
          pos1 = clone(pos);
          pos2 = clone(pos);
          result2 = parse_ws();
          if (result2 !== null) {
            result1 = [];
            while (result2 !== null) {
              result1.push(result2);
              result2 = parse_ws();
            }
          } else {
            result1 = null;
          }
          if (result1 !== null) {
            result2 = parse_key();
            if (result2 !== null) {
              if (input.charCodeAt(pos.offset) === 61) {
                result3 = "=";
                advance(pos, 1);
              } else {
                result3 = null;
                if (reportFailures === 0) {
                  matchFailed("\"=\"");
                }
              }
              if (result3 !== null) {
                result4 = parse_number();
                if (result4 === null) {
                  result4 = parse_identifier();
                  if (result4 === null) {
                    result4 = parse_inline();
                  }
                }
                if (result4 !== null) {
                  result1 = [result1, result2, result3, result4];
                } else {
                  result1 = null;
                  pos