Source Code for Module library.pyjamas.PyExternalMod

 1  from pyjamas.JSONService import JSONProxy 
 2  from pyjamas.HTTPRequest import HTTPRequest 
 3  from __pyjamas__ import JS 
 4   
 5 -class PyjamasExternalProxy(JSONProxy): 
 6      singleton = None 
 7   
 8 -    def __init__(self): 
 9          JSONProxy.__init__(self, "/obj/handler", ["call","methods"], True) 
10   
11      @staticmethod 
12 -    def instance(): 
13          if not PyjamasExternalProxy.singleton: 
14              PyjamasExternalProxy.singleton = PyjamasExternalProxy() 
15          return PyjamasExternalProxy.singleton 
16   
17   
18 -class PyjamasExternalModule: 
19      PyjamasExternalModule.http = HTTPRequest() 
20   
21 -    def __init__(self, mod_name): 
22          self.base = 'http://'+JS('''__location['host']''') 
23          req = '{"method":"methods","params":["%s"],"id":1}'%(mod_name) 
24          res = PyjamasExternalModule.http.syncPost(self.base+'/obj/handler',req) 
25          self.methods = self.__parseJSON(res)['result'] 
26          self.module = mod_name 
27   
28          for method in self.methods: 
29              self.__createMethod(method) 
30   
31 -    def __encodeJSON(self, obj): 
32          JS(''' 
33          var t = typeof(@{{obj}}); 
34          if(@{{obj}}==null) { 
35              return 'null'; 
36          }else if(t=='number') { 
37              return ''+@{{obj}}; 
38          }else if(t=='string'){ 
39              return '"'+@{{obj}}+'"' 
40          }else if(@{{isinstance}}([@{{obj}},@{{list}}],{})) { 
41              var parts = []; 
42              for(var i=0; i<@{{obj}}['length']; i++) { 
43                  parts['append']([ @{{self}}['__encodeJSON']([@{{obj}}[i]],{}) ],{}); 
44              } 
45              return "[" + ','['join']([parts],{}) + "]"; 
46          }else{ 
47              throw "Dicts and Objectss can not be jsoned !"; 
48          } 
49          ''') 
50   
51 -    def __parseJSON(self, str): 
52          JS(r""" 
53          try { 
54              return (/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(@{{str}})) && 
55                  eval('(' + @{{str}} + ')'); 
56          } catch (e) { 
57              return false; 
58          } 
59          """) 
60   
61 -    def __createMethod(self, method): 
62          def inner(*args, **kargs): 
63              params = self.__encodeJSON(args) 
64              req = '{"method":"call","params":["%s", "%s", %s],"id":2}'%(self.module,method,params) 
65              res = PyjamasExternalModule.http.syncPost(self.base+'/obj/handler',req) 
66              return self.__parseJSON(res)['result'] 
67          JS(""" 
68          @{{self}}[@{{method}}] = @{{inner}}; 
69          """) 
70