Refactor jrt buffer operations

`jrt_read_from_buffer_by_offset` is not used anywhere in the code
while `jrt_write_to_buffer_by_offset` is only used by snapshot
saving functions. Thus, this patch removes the read variant
completely and moves the write variant as a static function to
jerry.c. This empties out jrt.c, thus deleting.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

jerry-core/jrt/jrt.c

@@ -1,73 +0,0 @@
-/* Copyright 2016 Samsung Electronics Co., Ltd.
- * Copyright 2016 University of Szeged.
- *
- * 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.
- */
-
-#include "jrt.h"
-
-/**
- * Read data from a specified buffer.
- *
- * Note:
- *      Offset is in-out and is incremented if the read operation completes successfully.
- *
- * @return true, if read was successful, i.e. offset + data_size doesn't exceed buffer size,
- *         false - otherwise.
- */
-inline bool __attr_always_inline___
-jrt_read_from_buffer_by_offset (const uint8_t *buffer_p, /**< buffer */
-                                size_t buffer_size, /**< size of buffer */
-                                size_t *in_out_buffer_offset_p, /**< [in,out] offset to read from /
-                                                                 * incremented on sizeof (T) */
-                                void *out_data_p, /**< [out] data */
-                                size_t out_data_size) /**< size of the readable data */
-{
-  if (*in_out_buffer_offset_p + out_data_size > buffer_size)
-  {
-    return false;
-  }
-
-  memcpy (out_data_p, buffer_p + *in_out_buffer_offset_p, out_data_size);
-  *in_out_buffer_offset_p += out_data_size;
-
-  return true;
-} /* jrt_read_from_buffer_by_offset */
-
-/**
- * Write data to a specified buffer.
- *
- * Note:
- *      Offset is in-out and is incremented if the write operation completes successfully.
- *
- * @return true, if write was successful, i.e. offset + data_size doesn't exceed buffer size,
- *         false - otherwise.
- */
-inline bool __attr_always_inline___
-jrt_write_to_buffer_by_offset (uint8_t *buffer_p, /**< buffer */
-                               size_t buffer_size, /**< size of buffer */
-                               size_t *in_out_buffer_offset_p,  /**< [in,out] offset to read from /
-                                                                 * incremented on sizeof (T) */
-                               const void *data_p, /**< data */
-                               size_t data_size) /**< size of the writable data */
-{
-  if (*in_out_buffer_offset_p + data_size > buffer_size)
-  {
-    return false;
-  }
-
-  memcpy (buffer_p + *in_out_buffer_offset_p, data_p, data_size);
-  *in_out_buffer_offset_p += data_size;
-
-  return true;
-} /* jrt_write_to_buffer_by_offset */

jerry-core/jrt/jrt.h

@@ -160,7 +160,4 @@ extern void jerry_ref_unused_variables (void *, ...);
 #define JERRY_MIN(v1, v2) (((v1) < (v2)) ? (v1) : (v2))
 #define JERRY_MAX(v1, v2) (((v1) < (v2)) ? (v2) : (v1))
 
-extern bool jrt_read_from_buffer_by_offset (const uint8_t *, size_t, size_t *, void *, size_t);
-extern bool jrt_write_to_buffer_by_offset (uint8_t *, size_t, size_t *, const void *, size_t);
-
 #endif /* !JRT_H */