🐛 fix bugs in stl/json, now it runs correctly

test/json.nas

@@ -1,10 +1,11 @@
 import.stl.json;
+import.stl.process_bar;
 
 var ss=JSON.stringify({
     vec:[0,1,2],
     hash:{
         m1:0,
-        m2:"str",
+        m2:"str\\\"test\\\"",
         m3:[114514],
         m4:{year:1919,month:8,date:10}
     },
@@ -14,5 +15,49 @@ var ss=JSON.stringify({
     empty_an:[[[[[[{}]]]]]],
     function:func(){}
 });
-println(ss);
-println(JSON.parse(ss));
+println(ss,"\n");
+println(JSON.parse(ss),"\n");
+
+var ss=JSON.stringify([{
+    vec:[0,1,2,3],
+    hash:{
+        m1:0,
+        m2:"str\\\"test\\\"",
+        m3:[114514,1919810],
+        m4:{year:1919,month:8,date:10}
+    },
+    emptyhash:{},
+    emptyvec:[],
+    empty_an:[[[[[{}]]]]],
+    function:func(){}
+}]);
+println(ss,"\n");
+println(JSON.parse(ss),"\n");
+
+func {
+    var bar=process_bar.high_resolution_bar(30);
+    var tmp=[
+        {t1:nil},
+        {t2:nil},
+        {t3:nil},
+        {t4:nil},
+        {t5:nil},
+        {t6:nil}
+    ];
+
+    srand();
+    foreach(var h;tmp) {
+        var name=keys(h)[0];
+        h[name]=[];
+        print("\e[1000D",bar.bar(0));
+        for(var i=0;i<1e3;i+=1) {
+            append(h[name],{id:i,content:int(rand()*1e7)});
+            print("\e[1000D",bar.bar((i+1)/1e3));
+        }
+        print("\e[1000D",bar.bar(1)," executing...\n");
+    }
+    print("\e[1000D","\e["~str(size(tmp))~"A");
+    foreach(var h;JSON.parse(JSON.stringify(tmp))) {
+        println("\e[1000D",bar.bar(1)," done ",keys(h)[0]," ",size(h[keys(h)[0]]),"     ");
+    }
+}();