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توضیحات

Eolas interpreter

ویژگی	مقدار
سیستم عامل	-
نام فایل	eolas-0.1.0
نام	eolas
نسخه کتابخانه	0.1.0
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Baptiste Fontaine
ایمیل نویسنده	b@ptistefontaine.fr
آدرس صفحه اصلی	https://github.com/bfontaine/eolas
آدرس اینترنتی	https://pypi.org/project/eolas/
مجوز	Copyright © 2017 – Baptiste Fontaine Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

===== Eolas ===== **Eolas** is a toy language derived from a `@Maitre_Eolas’ Tweet`_. A few people responded to the Tweet saying it was invalid code and it wouldn’t be possible to write such program in any language due to obvious flaws like ``=`` for comparison and strings without quotes. This project provides an interpreter for that language. It parses the original program and evaluates it as intended. .. _`@Maitre_Eolas’ Tweet`: https://twitter.com/Maitre_Eolas/status/830450153391849472 Install ------- **Eolas** is distributed as a Python3 library and executable:: pip install eolas Note: you may need to use ``pip3`` instead of ``pip`` if your default installation is Python 2. Run --- Run ``eolas --help`` to see all options. The interpreter reads from ``STDIN`` unless you give it a filename. You may also evaluate short programs using ``--eval "<your code>"``. You can set the original memory using ``--set name=value``. Compare the results when the interpreter is run on the original program:: $ eolas code.eolas lose $ eolas --set 'avocat=Maitre Eolas' code.eolas Win Specification ------------- The original code block:: { IF (avocat = Maitre Eolas) THEN (Result = Win) ELSE (Result = lose) return 0; } In **Eolas**, a program is a suite of instructions wrapped in curly brackets. Instructions ~~~~~~~~~~~~ **Eolas** has three instructions: * ``IF (condition) THEN (instruction) ELSE (instruction)``: Usual if/then/else. The ``ELSE`` part is mandatory as well as parentheses everywhere. You can’t have more than one instruction in each part. The condition can be any expression. * Assignment: assignments in **Eolas** work as expected, using the syntax ``name = value``. All variables are global and names may contain spaces. * ``return code``: Interrupt the program with the given exit code. A program may store its result in a special variable ``Result``. It’ll be printed by the interpreter at the end. Expressions ~~~~~~~~~~~ Only three value types are supported: integers, strings, and booleans. There is no literal for booleans; they can only be obtained through comparison operators. There’s only one such operator for now: ``=`` to check for equality. The ``=`` operator is right-associative, so you can write code like this:: { this_is_true = 42 = 42 } Variables may contain spaces and evaluate to their string representation if they’re not set. There is no other way to write strings, and as such empty strings can’t be written. Negative integers are not supported.

نحوه نصب

نصب پکیج whl eolas-0.1.0:

pip install eolas-0.1.0.whl

نصب پکیج tar.gz eolas-0.1.0:

pip install eolas-0.1.0.tar.gz