EBNFParser

Parse Many, Any, Every

LR ::= LR 'a' 'b' | LR 'c' | 'd';

• Python Project(Support Python 3.6+) (v 2.0+)
  • Old Version : Misakawa v0.x
  • Old Version : Ruikowa v1.x

Install

• Python

  • pip

  pip installl -U EBNFParser

  • setup

  git clone https://github.com/thautwarm/EBNFParser
  cd EBNFParser/Python
  python setup.py install
  

Usage

• Command Line Tools

  • ruiko.

  ruiko ./<grammar File> ./<output filename>
          [--testTk] # print tokenized words or not
          [--test] # generate test script "test_lang.py"
  

  Use command ruiko to generate parser and token files, and then you can use test_lang.py to test your parser.

  python ./test_lang.py Stmt " (+ 1 2) " -o test.json --testTk
  

• Integrated into your own project

  
      from Ruikowa.ObjectRegex.ASTDef import Ast
      from Ruikowa.ErrorHandler import ErrorHandler
      from Ruikowa.ObjectRegex.MetaInfo import MetaInfo
      from Ruikowa.ObjectRegex.Tokenizer import Tokenizer
  
      from <your own generated parser module> import <top parser>, token_table
  
  
      import typing as t
  
      def token_func(src_code: str) -> t.Iterable[Tokenizer]:
          return Tokenizer.from_raw_strings(src_code, token_table, ({<the names of tokenizers you would ignore>}, {<the string contents of tokenizers you would ignore>}))
  
      parser = ErrorHandler(<top parser>.match, token_func)
  
      def parse(filename: str) -> Ast:
  
          return parser.from_file(filename)
  
  
      print(parse(<filename of your dsl source code>))
  
  

Need more? See the documents.

Examples

Here are some examples to refer:

EBNFParser 2.0

• Rem
  The Rem programming language.

Old version(Before EBNFParser 1.1).

• DBG-Lang
  A DSL for SQL development in Python areas.

• Rem(Based EBNFParser1.1)
  A full featured modern language to enhance program readability based on CPython.

• Lang.Red
  An attempt to making ASDL in CPython(unfinished yet)

Will support F# and Rem.