c6a4a86257
This patch introduces several changes conntect to ecma-strings: - Extend the size of the reference counter to 28 bytes from 13 - Extend the size of the string hash to 32 bytes from 16 to use the extact FNV-1a hash - Introduce ECMA_STATIC_STRING_FLAG to reduce the number of string ref/derefs for static strings. - Introduce ECMA_STRING_CONTAINER_ASCII_STRING to store run-time allocated ASCII strings more efficiently - Remove ECMA_STRING_CONTAINER_LIT_NUMBER to half the storage size of the parsing time allocated floating point numbers - Rework the global number storage, to store only the floating point numbers - Optimize the lookup in the global number/string/symbol tables via reduce the number of NULL checks during decompressing the next element pointers - Reduce the code duplication in ecma_concat_ecma_strings and ecma_append_chars_to_string - Improve ecma_string_get_char with optional arguments to make it more reusable. 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.