ex/tryhy: per request repl instance

eg/tryhy/js/repl.js

@@ -1,15 +1,24 @@
 $(document).ready(function(){
+  var backlog = [];
   $('#hy-console').console({
     promptLabel: 'hy=> ',
     commandValidate:function(line){
-      if (line == "") return false;
+      if (line == '') return false;
       else return true;
     },
     commandHandle:function(line, report){
-      $.getJSON("/eval", {code: line}, function(data) {
-        report([{msg : data.stdout, className:"jquery-console-message-value"},
-                {msg : data.stderr, className:"jquery-console-message-error"}]);
+      $.ajax({
+        type: 'POST',
+        url: '/eval',
+        data: JSON.stringify({code: line, env: backlog}),
+        contentType: 'application/json',
+        dataType: 'json',
+        success: function(data) {
+          report([{msg : data.stdout, className:'jquery-console-message-value'},
+                  {msg : data.stderr, className:'jquery-console-message-error'}]);
+        }
       });
+      backlog.push(line);
     },
     animateScroll:true,
     promptHistory:true,

eg/tryhy/main.hy

@@ -1,4 +1,3 @@
-(require hy.contrib.meth)
 (import [hy.cmdline [HyREPL]]
         [sys]
         [StringIO [StringIO]]
@@ -18,9 +17,13 @@
            (setv sys.stderr old-stderr)
            {"stdout" (fake-stdout.getvalue) "stderr" (fake-stderr.getvalue)})]])
                  
-
-(def repl (MyHyREPL))
-
 (def app (Flask __name__))
-(route hello "/<name>" [name] (.format "(hello \"{0}!\")" name))
-(route eval-get "/eval" [] (json.dumps (repl.eval (get request.args "code"))))
+
+(with-decorator (kwapply (app.route "/eval") {"methods" ["POST"]})
+  (fn [] 
+    (let [[repl (MyHyREPL)] [input (request.get_json)]]
+      (foreach [expr (get input "env")]
+        (repl.eval expr))
+      (json.dumps (repl.eval (get input "code")))
+    )))
+