add `_get` and `_set`

include/typings/array2d.pyi

@@ -17,6 +17,9 @@ class array2d(Generic[T]):
 
     def get(self, col: int, row: int, default=None) -> T | None: ...
 
+    def _get(self, col: int, row: int) -> T: ...
+    def _set(self, col: int, row: int, value: T) -> None: ...
+
     @overload
     def __getitem__(self, index: tuple[int, int]) -> T: ...
     @overload

src/array2d.cpp

@@ -28,6 +28,11 @@ struct Array2d{
         return 0 <= col && col < n_cols && 0 <= row && row < n_rows;
     }
 
+    void check_valid(VM* vm, int col, int row) const{
+        if(is_valid(col, row)) return;
+        vm->IndexError(_S('(', col, ", ", row, ')', " is not a valid index for array2d(", n_cols, ", ", n_rows, ')'));
+    }
+
     PyVar _get(int col, int row){
         return data[row * n_cols + col];
     }
@@ -64,7 +69,26 @@ struct Array2d{
         PY_READONLY_FIELD(Array2d, "height", n_rows);
         PY_READONLY_FIELD(Array2d, "numel", numel);
 
-        vm->bind(type, "is_valid(self, col: int, row: int)", [](VM* vm, ArgsView args){
+        // _get
+        vm->bind_func(type, "_get", 3, [](VM* vm, ArgsView args){
+            Array2d& self = PK_OBJ_GET(Array2d, args[0]);
+            int col = CAST(int, args[1]);
+            int row = CAST(int, args[2]);
+            self.check_valid(vm, col, row);
+            return self._get(col, row);
+        });
+
+        // _set
+        vm->bind_func(type, "_set", 4, [](VM* vm, ArgsView args){
+            Array2d& self = PK_OBJ_GET(Array2d, args[0]);
+            int col = CAST(int, args[1]);
+            int row = CAST(int, args[2]);
+            self.check_valid(vm, col, row);
+            self._set(col, row, args[3]);
+            return vm->None;
+        });
+
+        vm->bind_func(type, "is_valid", 3, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             int col = CAST(int, args[1]);
             int row = CAST(int, args[2]);
@@ -94,9 +118,7 @@ struct Array2d{
             const Tuple& xy = CAST(Tuple&, _1);
             i64 col, row;
             if(try_cast_int(xy[0], &col) && try_cast_int(xy[1], &row)){
-                if(!self.is_valid(col, row)){
-                    vm->IndexError(_S('(', col, ", ", row, ')', " is not a valid index for array2d(", self.n_cols, ", ", self.n_rows, ')'));
-                }
+                self.check_valid(vm, col, row);
                 return self._get(col, row);
             }
 
@@ -121,9 +143,7 @@ struct Array2d{
             const Tuple& xy = CAST(Tuple&, _1);
             i64 col, row;
             if(try_cast_int(xy[0], &col) && try_cast_int(xy[1], &row)){
-                if(!self.is_valid(col, row)){
-                    vm->IndexError(_S('(', col, ", ", row, ')', " is not a valid index for array2d(", self.n_cols, ", ", self.n_rows, ')'));
-                }
+                self.check_valid(vm, col, row);
                 self._set(col, row, _2);
                 return;
             }
@@ -165,7 +185,7 @@ struct Array2d{
 
         #undef HANDLE_SLICE
 
-        vm->bind(type, "tolist(self)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "tolist", 1, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             List t(self.n_rows);
             for(int j = 0; j < self.n_rows; j++){
@@ -186,7 +206,7 @@ struct Array2d{
             return _S("array2d(", self.n_cols, ", ", self.n_rows, ')');
         });
 
-        vm->bind(type, "map(self, f)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "map", 2, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             PyVar f = args[1];
             PyVar new_array_obj = vm->new_user_object<Array2d>();
@@ -198,7 +218,7 @@ struct Array2d{
             return new_array_obj;
         });
 
-        vm->bind(type, "copy(self)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "copy", 1, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             PyVar new_array_obj = vm->new_user_object<Array2d>();
             Array2d& new_array = PK_OBJ_GET(Array2d, new_array_obj);
@@ -209,7 +229,7 @@ struct Array2d{
             return new_array_obj;
         });
 
-        vm->bind(type, "fill_(self, value)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "fill_", 2, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]); 
             for(int i = 0; i < self.numel; i++){
                 self.data[i] = args[1];
@@ -217,7 +237,7 @@ struct Array2d{
             return vm->None;
         });
 
-        vm->bind(type, "apply_(self, f)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "apply_", 2, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             PyVar f = args[1];
             for(int i = 0; i < self.numel; i++){
@@ -226,7 +246,7 @@ struct Array2d{
             return vm->None;
         });
 
-        vm->bind(type, "copy_(self, other)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "copy_", 2, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             if(is_type(args[1], VM::tp_list)){
                 const List& list = PK_OBJ_GET(List, args[1]);
@@ -300,7 +320,7 @@ struct Array2d{
             return new_array_obj; 
         });
 
-        vm->bind(type, "count(self, value) -> int", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "count", 2, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             PyVar value = args[1];
             int count = 0;
@@ -308,7 +328,7 @@ struct Array2d{
             return VAR(count);
         });
 
-        vm->bind(type, "find_bounding_rect(self, value)", [](VM* vm, ArgsView args){
+        vm->bind_func(type, "find_bounding_rect", 2, [](VM* vm, ArgsView args){
             Array2d& self = PK_OBJ_GET(Array2d, args[0]);
             PyVar value = args[1];
             int left = self.n_cols;

tests/83_array2d.py

@@ -173,6 +173,12 @@ for i, j, x in a:
 
 assert len(a) == a.numel
 
+# test _get and _set
+a = array2d(3, 4, default=1)
+assert a._get(0, 0) == 1
+a._set(0, 0, 2)
+assert a._get(0, 0) == 2
+
 # stackoverflow bug due to recursive mark-and-sweep
 # class Cell:
 #     neighbors: list['Cell']