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Add typedarray routine: reduce and reduceRight (#1569)

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JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
This commit is contained in:
Zidong Jiang 2017-02-10 20:36:00 +08:00 committed by László Langó
parent 32674ff379
commit 24e6c3f062
4 changed files with 202 additions and 0 deletions
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160
jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.c
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@ -354,6 +354,166 @@ ecma_builtin_typedarray_prototype_map (ecma_value_t this_arg, /**< this argument
return ret_value;
} /* ecma_builtin_typedarray_prototype_map */
/**
* Reduce and reduceRight routines share a similar structure.
* And we use 'is_right' to distinguish between them.
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_typedarray_prototype_reduce_with_direction (ecma_value_t this_arg, /**< this argument */
ecma_value_t cb_func_val, /**< callback function */
ecma_value_t initial_val, /**< initial value */
bool is_right) /**< choose order, true is reduceRight */
{
if (!ecma_is_typedarray (this_arg))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Argument 'this' is not a TypedArray."));
}
if (!ecma_op_is_callable (cb_func_val))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Callback function is not callable."));
}
ecma_object_t *obj_p = ecma_get_object_from_value (this_arg);
uint32_t len = ecma_typedarray_get_length (obj_p);
if (len == 0)
{
if (ecma_is_value_undefined (initial_val))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Initial value cannot be undefined."));
}
return ecma_copy_value (initial_val);
}
JERRY_ASSERT (len > 0);
ecma_value_t accumulator = ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
uint32_t index = is_right ? (len - 1) : 0;
if (ecma_is_value_undefined (initial_val))
{
accumulator = ecma_op_typedarray_get_index_prop (obj_p, index);
JERRY_ASSERT (ecma_is_value_number (accumulator));
if (is_right)
{
if (index == 0)
{
return accumulator;
}
index--;
}
else
{
index++;
if (index == len)
{
return accumulator;
}
}
}
else
{
accumulator = ecma_copy_value (initial_val);
}
ecma_object_t *func_object_p = ecma_get_object_from_value (cb_func_val);
while (true)
{
ecma_value_t current_index = ecma_make_uint32_value (index);
ecma_value_t get_value = ecma_op_typedarray_get_index_prop (obj_p, index);
ecma_value_t call_args[] = { accumulator, get_value, current_index, this_arg };
JERRY_ASSERT (ecma_is_value_number (get_value));
ecma_value_t call_value = ecma_op_function_call (func_object_p,
ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED),
call_args,
4);
ecma_fast_free_value (accumulator);
ecma_fast_free_value (get_value);
ecma_fast_free_value (current_index);
if (ECMA_IS_VALUE_ERROR (call_value))
{
return call_value;
}
accumulator = call_value;
if (is_right)
{
if (index == 0)
{
break;
}
index--;
}
else
{
index++;
if (index == len)
{
break;
}
}
}
return accumulator;
} /* ecma_builtin_typedarray_prototype_reduce_with_direction */
/**
* The %TypedArray%.prototype object's 'reduce' routine
*
* See also:
* ES2015, 22.2.3.19
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_typedarray_prototype_reduce (ecma_value_t this_arg, /**< this argument */
ecma_value_t cb_func_val, /**< callback function */
ecma_value_t initial_val) /**< initial value */
{
return ecma_builtin_typedarray_prototype_reduce_with_direction (this_arg,
cb_func_val,
initial_val,
false);
} /* ecma_builtin_typedarray_prototype_reduce */
/**
* The %TypedArray%.prototype object's 'reduceRight' routine
*
* See also:
* ES2015, 22.2.3.20
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_typedarray_prototype_reduce_right (ecma_value_t this_arg, /**< this argument */
ecma_value_t cb_func_val, /**< callback function */
ecma_value_t initial_val) /**< initial value */
{
return ecma_builtin_typedarray_prototype_reduce_with_direction (this_arg,
cb_func_val,
initial_val,
true);
} /* ecma_builtin_typedarray_prototype_reduce_right */
/**
* @}
* @}

2
jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.inc.h
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@ -60,6 +60,8 @@ ROUTINE (LIT_MAGIC_STRING_EVERY, ecma_builtin_typedarray_prototype_every, 2, 1)
ROUTINE (LIT_MAGIC_STRING_SOME, ecma_builtin_typedarray_prototype_some, 2, 1)
ROUTINE (LIT_MAGIC_STRING_FOR_EACH_UL, ecma_builtin_typedarray_prototype_for_each, 2, 1)
ROUTINE (LIT_MAGIC_STRING_MAP, ecma_builtin_typedarray_prototype_map, 2, 1)
ROUTINE (LIT_MAGIC_STRING_REDUCE, ecma_builtin_typedarray_prototype_reduce, 2, 1)
ROUTINE (LIT_MAGIC_STRING_REDUCE_RIGHT_UL, ecma_builtin_typedarray_prototype_reduce_right, 2, 1)
#undef SIMPLE_VALUE
#undef NUMBER_VALUE

20
tests/jerry-test-suite/es2015/22/22.02/22.02.03/22.02.03-015.js Normal file
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@ -0,0 +1,20 @@
/* 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 total = new Float32Array([-1.5, 0, 1.5, 2]).reduce(function(a, b, c) {
return a + b + c;
}, 10);
assert(total === 18); // 10 + (-1.5) + 0 + 0 + 1 + 1.5 + 2 + 2 + 3

20
tests/jerry-test-suite/es2015/22/22.02/22.02.03/22.02.03-016.js Normal file
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@ -0,0 +1,20 @@
/* 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 total = new Float32Array([-1.5, 0, 1.5, 2]).reduceRight(function(a, b) {
return a - b;
});
assert (total === 2) // 2 - 1.5 - 0 - (-1.5)