add PikaStdData

package/PikaStdData/PikaStdData.py

@@ -0,0 +1,17 @@
+from PikaObj import *
+
+class List(TinyObj):
+    def init():
+        pass
+
+    def append(arg: any):
+        pass
+
+    def get(i: int) -> any:
+        pass
+
+    def set(i: int, arg: any):
+        pass
+
+    def len() -> int:
+        pass

package/PikaStdData/PikaStdData_List.c

@@ -0,0 +1,35 @@
+#include "PikaStdData_List.h"
+
+void PikaStdData_List_append(PikaObj* self, Arg* arg) {
+    int top = obj_getInt(self, "top");
+    char buff[11];
+    char* topStr = fast_itoa(buff, top);
+    obj_setArg(self, topStr, arg);
+    /* top++ */
+    obj_setInt(self, "top", top + 1);
+}
+
+int PikaStdData_List_len(PikaObj* self) {
+    return obj_getInt(self, "top");
+}
+
+Arg* PikaStdData_List_get(PikaObj* self, int i) {
+    char buff[11];
+    char* index = fast_itoa(buff, i);
+    return arg_copy(obj_getArg(self, index));
+}
+void PikaStdData_List___init__(PikaObj* self) {
+    /* set top index for append */
+    obj_setInt(self, "top", 0);
+}
+
+void PikaStdData_List_set(PikaObj* self, Arg* arg, int i) {
+    char buff[11];
+    char* i_str = fast_itoa(buff, i);
+    int top = obj_getInt(self, "top");
+    if (i > top) {
+        obj_setErrorCode(self, 1);
+        obj_setSysOut(self, "[error]: index exceeded lengh of list.");
+    }
+    obj_setArg(self, i_str, arg);
+}