Add %TypedArray%.prototype.fill(value, [ begin [, end ] ]) support. (#2415)

JerryScript-DCO-1.0-Signed-off-by: Anthony Calandra anthony@anthony-calandra.com

Author: AnthonyCalandra

jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.c

@@ -1194,6 +1194,88 @@ ecma_builtin_typedarray_prototype_subarray (ecma_value_t this_arg, /**< this arg
   return ret_value;
 } /* ecma_builtin_typedarray_prototype_subarray */
 
+/**
+ * The %TypedArray%.prototype object's 'fill' routine.
+ *
+ * See also:
+ *          ES2015, 22.2.3.8, 22.1.3.6
+ *
+ * @return ecma value
+ *         Returned value must be freed with ecma_free_value.
+ */
+static ecma_value_t
+ecma_builtin_typedarray_prototype_fill (ecma_value_t this_arg, /**< this argument */
+                                        ecma_value_t value, /**< value */
+                                        ecma_value_t begin, /**< begin */
+                                        ecma_value_t end) /**< end */
+{
+  if (!ecma_is_typedarray (this_arg))
+  {
+    return ecma_raise_type_error (ECMA_ERR_MSG ("Argument 'this' is not a TypedArray."));
+  }
+
+  ecma_number_t value_num;
+  ecma_value_t ret_value = ecma_get_number (value, &value_num);
+
+  if (!ecma_is_value_empty (ret_value))
+  {
+    return ret_value;
+  }
+
+  ecma_object_t *typedarray_p = ecma_get_object_from_value (this_arg);
+  ecma_object_t *typedarray_arraybuffer_p = ecma_typedarray_get_arraybuffer (typedarray_p);
+  lit_utf8_byte_t *buffer_p = ecma_arraybuffer_get_buffer (typedarray_arraybuffer_p);
+  ecma_length_t length = ecma_typedarray_get_length (typedarray_p);
+
+  uint32_t begin_index_uint32 = 0, end_index_uint32 = 0;
+
+  ECMA_OP_TO_NUMBER_TRY_CATCH (relative_begin, begin, ret_value);
+  begin_index_uint32 = ecma_builtin_helper_array_index_normalize (relative_begin, length);
+
+  if (ecma_is_value_undefined (end))
+  {
+    end_index_uint32 = (uint32_t) length;
+  }
+  else
+  {
+    ECMA_OP_TO_NUMBER_TRY_CATCH (relative_end, end, ret_value);
+
+    end_index_uint32 = ecma_builtin_helper_array_index_normalize (relative_end, length);
+
+    ECMA_OP_TO_NUMBER_FINALIZE (relative_end);
+  }
+
+  ECMA_OP_TO_NUMBER_FINALIZE (relative_begin);
+
+  if (!ecma_is_value_empty (ret_value))
+  {
+    return ret_value;
+  }
+
+  ecma_length_t subarray_length = 0;
+
+  if (end_index_uint32 > begin_index_uint32)
+  {
+    subarray_length = end_index_uint32 - begin_index_uint32;
+  }
+
+  uint8_t shift = ecma_typedarray_get_element_size_shift (typedarray_p);
+  ecma_length_t byte_offset = ecma_typedarray_get_offset (typedarray_p);
+  lit_magic_string_id_t class_id = ecma_object_get_class_name (typedarray_p);
+
+  uint8_t element_size = (uint8_t) (1 << shift);
+  uint32_t byte_index = byte_offset + begin_index_uint32 * element_size;
+  uint32_t limit = byte_index + subarray_length * element_size;
+
+  while (byte_index < limit)
+  {
+    ecma_set_typedarray_element (buffer_p + byte_index, value_num, class_id);
+    byte_index += element_size;
+  }
+
+  return ecma_copy_value (this_arg);
+} /* ecma_builtin_typedarray_prototype_fill */
+
 /**
  * @}
  * @}

jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.inc.h

@@ -59,6 +59,7 @@ ROUTINE (LIT_MAGIC_STRING_FILTER, ecma_builtin_typedarray_prototype_filter, 2, 1
 ROUTINE (LIT_MAGIC_STRING_REVERSE, ecma_builtin_typedarray_prototype_reverse, 0, 0)
 ROUTINE (LIT_MAGIC_STRING_SET, ecma_builtin_typedarray_prototype_set, 2, 1)
 ROUTINE (LIT_MAGIC_STRING_SUBARRAY, ecma_builtin_typedarray_prototype_subarray, 2, 2)
+ROUTINE (LIT_MAGIC_STRING_FILL, ecma_builtin_typedarray_prototype_fill, 3, 1)
 
 #endif /* !CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN */
 

jerry-core/lit/lit-magic-strings.inc.h

@@ -108,6 +108,7 @@ LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_EVAL, "eval")
 LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_EXEC, "exec")
 #endif
 #if !defined (CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN)
+LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_FILL, "fill")
 LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_FROM, "from")
 #endif
 #if !defined (CONFIG_DISABLE_ARRAY_BUILTIN) \

jerry-core/lit/lit-magic-strings.ini

@@ -65,6 +65,7 @@ LIT_MAGIC_STRING_CALL = "call"
 LIT_MAGIC_STRING_CEIL = "ceil"
 LIT_MAGIC_STRING_EVAL = "eval"
 LIT_MAGIC_STRING_EXEC = "exec"
+LIT_MAGIC_STRING_FILL = "fill"
 LIT_MAGIC_STRING_FROM = "from"
 LIT_MAGIC_STRING_JOIN = "join"
 LIT_MAGIC_STRING_KEYS = "keys"

tests/jerry/es2015/typedArray-fill.js

@@ -0,0 +1,105 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var a = new Int32Array([1, 2, 3, 4, 5]);
+assert(a.fill(0).toString() === '0,0,0,0,0');
+assert(a.toString() === '0,0,0,0,0');
+assert(a.fill(1, 3).toString() === '0,0,0,1,1');
+assert(a.toString() === '0,0,0,1,1');
+assert(a.fill(2, 1, 3).toString() === '0,2,2,1,1');
+assert(a.toString() === '0,2,2,1,1');
+assert(a.fill(3, -3).toString() === '0,2,3,3,3');
+assert(a.toString() === '0,2,3,3,3');
+assert(a.fill(4, -3, -1).toString() === '0,2,4,4,3');
+assert(a.toString() === '0,2,4,4,3');
+assert(a.fill(5, 3, 2).toString() === '0,2,4,4,3');
+assert(a.toString() === '0,2,4,4,3');
+assert(a.fill(6, -2, -3).toString() === '0,2,4,4,3');
+assert(a.toString() === '0,2,4,4,3');
+assert(a.fill(7, 4, 1).toString() === '0,2,4,4,3');
+assert(a.toString() === '0,2,4,4,3');
+assert(a.fill(8, -1, -4).toString() === '0,2,4,4,3');
+assert(a.toString() === '0,2,4,4,3');
+assert(a.fill(9, 1).fill(10, 1).toString() === '0,10,10,10,10');
+assert(a.toString() === '0,10,10,10,10');
+assert(a.fill(11, 0, 4).fill(12, 1, 2).toString() === '11,12,11,11,10');
+assert(a.toString() === '11,12,11,11,10');
+assert(a.fill(13, 999, 1000).fill(14, -1000, -999).toString() === '11,12,11,11,10');
+assert(a.toString() === '11,12,11,11,10');
+assert(a.fill(14, 0, 0).toString() === '11,12,11,11,10');
+assert(a.toString() === '11,12,11,11,10');
+assert(a.fill(15, a.length, a.length).toString() === '11,12,11,11,10');
+assert(a.toString() === '11,12,11,11,10');
+assert(a.fill(NaN).toString() === '0,0,0,0,0'); // NaN gets coerced into an integer.
+assert(a.toString() === '0,0,0,0,0');
+assert(a.fill({ valueOf: () => 16 }).toString() === '16,16,16,16,16');
+assert(a.toString() === '16,16,16,16,16');
+
+var b = new Uint8Array();
+assert(b.fill(1).toString() === '');
+assert(b.toString() === '');
+assert(b.fill(2, 0, 0).toString() === '');
+assert(b.toString() === '');
+assert(b.fill(3, b.length, b.length).toString() === '');
+assert(b.toString() === '');
+
+var c = new Uint8Array([0]);
+assert(c.fill(256).toString() === '0');
+assert(c.toString() === '0');
+assert(c.fill(257).toString() === '1');
+assert(c.toString() === '1');
+
+try {
+  c.fill({});
+} catch (e) {
+  assert(e instanceof TypeError);
+  assert(c.toString() === '1');
+}
+
+var d = new Float32Array([0]);
+assert(d.fill(NaN).toString() === 'NaN');
+assert(d.toString() === 'NaN');
+
+var ab = new ArrayBuffer(4);
+var e = new Uint8Array(ab);
+assert(e.fill(0).toString() === '0,0,0,0');
+
+var f = new Uint32Array(ab);
+assert(f.fill(1).toString() === '1');
+assert(e.toString() === '1,0,0,0');
+
+var g = new Uint8Array(ab, 1, 2);
+assert(g.toString() === '0,0');
+assert(g.fill(2).toString() === '2,2');
+assert(e.toString() === '1,2,2,0');
+assert(g.fill(3, -1).toString() === '2,3');
+assert(e.toString() === '1,2,3,0');
+assert(g.fill(4, 0, 2).toString() === '4,4');
+assert(e.toString() === '1,4,4,0');
+assert(g.fill(5, 0, 999).toString() === '5,5');
+assert(e.toString() === '1,5,5,0');
+assert(g.fill(6, -999, 999).toString() === '6,6');
+assert(e.toString() === '1,6,6,0');
+assert(g.fill(7, -999, 0).toString() === '6,6');
+assert(e.toString() === '1,6,6,0');
+
+var ab2 = new ArrayBuffer(4);
+var h = new Uint8Array(ab2);
+var i = new Uint16Array(ab2, 0, 1);
+assert(i.fill(1).toString() === '1');
+assert(h.toString() === '1,0,0,0');
+var j = new Uint16Array(ab2, 2, 1);
+assert(j.fill(1).toString() === '1');
+assert(h.toString() === '1,0,1,0');