47f2f0ea8b
ECMA_GET_POINTER is removed from:
- property list iteration
- lexical environment chain iteration
- prototype chain iteration
For all these iteration the compressed pointer can be used to get the elements and only decompressed them if it is necessary.
- Properly guard ecma property hashmap routines
- Remove the redundant NULL pointer check from ecma_create_property
- Remove ecma_gc_get_object_next since it became unnecessary
- Substitute ECMA_{GET,SET}_POINTER with ECMA_{GET,SET}_NON_NULL pointer when we can assume the pointer is not NULL
- Remove ecma_get_object_prototype and ecma_get_lex_env_outer_reference helper function the reduce the number of NULL pointer checks during decompressing the pointers
- Remove ecma_get_named_accessor_property_{getter,setter} helper functions for also reduce the number of NULL pointer check/decompressions
- Remove ECMA_PROPERTY_SEARCH_DEPTH_LIMIT since in ES5 there is no way to create circular prototype chain, and the ES2015 setPrototypeOf method can resolve this error so this check during the property lookup can be eliminated.
JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
JerryScript: JavaScript engine for the Internet of Things
JerryScript is a lightweight JavaScript engine for resource-constrained devices such as microcontrollers. It can run on devices with less than 64 KB of RAM and less than 200 KB of flash memory.
Key characteristics of JerryScript:
- Full ECMAScript 5.1 standard compliance
- 160K binary size when compiled for ARM Thumb-2
- Heavily optimized for low memory consumption
- Written in C99 for maximum portability
- Snapshot support for precompiling JavaScript source code to byte code
- Mature C API, easy to embed in applications
Additional information can be found on our project page and Wiki.
Memory usage and Binary footprint are measured at here with real target daily.
The following table shows the latest results on the devices:
| STM32F4-Discovery |  |
|---|---|
| Raspberry Pi 2 |  |
IRC channel: #jerryscript on freenode Mailing list: jerryscript-dev@groups.io, you can subscribe here and access the mailing list archive here.
Quick Start
Getting the sources
git clone https://github.com/jerryscript-project/jerryscript.git
cd jerryscript
Building JerryScript
python tools/build.py
For additional information see Getting Started.
Documentation
Contributing
The project can only accept contributions which are licensed under the Apache License 2.0 and are signed according to the JerryScript Developer's Certificate of Origin. For further information please see our Contribution Guidelines.
License
JerryScript is open source software under the Apache License 2.0. Complete license and copyright information can be found in the source code.
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.