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/* DreemGL is a collaboration between Teeming Society & Samsung Electronics, sponsored by Samsung and others.
   Copyright 2015-2016 Teeming Society. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License.
   You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing,
   software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and limitations under the License.*/
// Acorn Serializer

define.class(function(require, exports, self){

        // entrypoint for the serializer
        self.walk = function(node, parent, state){
                if(!(node.type in this)) throw new Error('Dont have '+node.type + ' in AST serialize')
                return this[node.type](node, parent, state)
        }

        self.statements = function(array, parent, state){
                var out = ''
                for(var i = 0; i < array.length; i++){
                        var node = array[i]
                        out += this[node.type](node, parent, state) 
                }
                return out
        }

        self.list = function(array, parent, state){
                var out = ''
                for(var i = 0;i < array.length; i++){
                        var node = array[i]
                        if(out)  out += ', '
                        out += this[node.type](node, parent, state)
                }
                return out
        }

        self.Program = function(node, parent, state){
                return this.statements(node.body, node, state)
        }

        self.BinaryExpression = function(node, parent, state){
                return this.walk(node.left, node, state) + node.operator + this.walk(node.right, node, state)
        }

        self.AssignmentExpression = function(node, parent, state){
                return this.walk(node.left, node, state) + "=" + this.walk(node.right, node, state)
        }

        self.ExpressionStatement = function(node, parent, state){
                return this.walk(node.expression, node, state)
        }

        self.ThisExpression = function(){
                return 'this'
        }

        self.MemberExpression = function(node, parent, state){
                if(node.computed) return this.walk(node.object, node, state) + '[' + this.walk(node.property, node, state) + ']'
                return this.walk(node.object, node, state) + '.' + node.property.name
        }

        self.CallExpression = function(node, parent, state){
                return this.walk(node.callee, node, state) + '(' + this.list(node.arguments, node, state) + ')'
        }

        self.Identifier = function(node, parent, state){
                return node.name
        }
        
        self.Literal = function(node, parent, state){
                return node.raw
        }        
})