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Add core API jerry_value_instanceof #2845

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15 changes: 15 additions & 0 deletions jerry-core/api/jerry.c
Original file line number Diff line number Diff line change
Expand Up @@ -807,6 +807,21 @@ jerry_value_is_undefined (const jerry_value_t value) /**< api value */
return ecma_is_value_undefined (value);
} /* jerry_value_is_undefined */

/**
* Perform instanceof check on the specified two operands.
*
* @return true - if the left hand side is instance of right hand side,
* false - otherwise.
*/
bool
jerry_value_instanceof (const jerry_value_t value, const jerry_value_t proto)
{
jerry_assert_api_available ();

ecma_value_t ret = ecma_op_object_has_instance (ecma_get_object_from_value (proto), value);
return ecma_is_value_true (ret);
}

/**
* Perform the base type of the JavaScript value.
*
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1 change: 1 addition & 0 deletions jerry-core/include/jerryscript-core.h
Original file line number Diff line number Diff line change
Expand Up @@ -372,6 +372,7 @@ bool jerry_value_is_promise (const jerry_value_t value);
bool jerry_value_is_string (const jerry_value_t value);
bool jerry_value_is_symbol (const jerry_value_t value);
bool jerry_value_is_undefined (const jerry_value_t value);
bool jerry_value_instanceof(const jerry_value_t value, const jerry_value_t proto);

/**
* JerryScript API value type information.
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1 change: 1 addition & 0 deletions tests/unit-core/test-api.c
Original file line number Diff line number Diff line change
Expand Up @@ -450,6 +450,7 @@ main (void)
val_a = get_property (global_obj_val, "a");
TEST_ASSERT (!jerry_value_is_error (val_a));
TEST_ASSERT (jerry_value_is_object (val_a));
TEST_ASSERT (jerry_value_instanceof (val_a, val_A));

/* Get a.t */
res = get_property (val_a, "t");
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