kefir
parson
kefir | parson | |
---|---|---|
1 | 1 | |
455 | 57 | |
0.4% | - | |
1.8 | 2.0 | |
about 3 years ago | 10 months ago | |
Python | Python | |
GNU General Public License v3.0 or later | - |
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kefir
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Great Vowel Shift
I recommend to read the following article before reading that wiki post. So we need to understand what does a Vokal (Vowel) mean first.
https://github.com/yogurt-cultures/kefir/blob/master/kefir/p...
Also I shifted one Const sound in the wikipedia article.
parson
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A complete compiler and VM in 150 lines of code
That's powerful enough to conveniently write, for example, a numerical root finding program for an arbitrary arithmetic expression.
But I think that within a complexity budget of 150 lines of code you can maybe be even more ambitious than that.
The example compiler in https://github.com/darius/parson/blob/master/eg_calc_compile... is a bit more stripped down than that, but in its 32 lines of code it compiles arithmetic assignment statements to a three-address RISC-like code (though using an unbounded number of registers). https://github.com/darius/parson/blob/master/eg_calc_to_rpn.... is a 16-line version that compiles the same language to a stack machine like your tutorial example.
In 66 lines of code in https://github.com/kragen/peg-bootstrap/blob/master/peg.md I wrote an example compiler which compiles a PEG grammar into a JavaScript parser for that grammar. Admittedly those 66 lines do not include an implementation of JavaScript to run the code on. It compiles the language it's written in.
In 132 lines of code in https://github.com/kragen/stoneknifeforth/blob/master/tinybo... I wrote an example compiler which compiles a crippled Forth dialect into i386 machine code, including an ELF header so you can run the result. It also compiles the language it's written in. It also doesn't include an i386 emulator to run it on.
In 83 lines of code in http://canonical.org/~kragen/sw/dev3/neelcompiler.ml Neel Krishnaswami wrote a compiler from the untyped λ-calculus to a simple assembly language for a register machine. It also doesn't include an implementation of the assembly language.
In 18 lines of code in http://canonical.org/~kragen/sw/dev3/meta5ix.m5, a simplification of META-II, I wrote a compiler from grammar descriptions to an assembly code for a parsing-oriented virtual machine. It compiles the language it's written in. A Python interpreter for the machine is in http://canonical.org/~kragen/sw/dev3/meta5ixrun.py (109 lines of code) and a precompiled version of the compiler-compiler for bootstrapping is in http://canonical.org/~kragen/sw/dev3/meta5ix.generated.m5asm.
A slightly incompatible variant of Meta5ix which instead compiles itself to C is in http://canonical.org/~kragen/sw/dev3/meta5ix2c.m5 (133 lines of code, depending on how you count). (No C compiler is included.) The precompiled C output for bootstrapping is in http://canonical.org/~kragen/sw/dev3/meta5ix2c.c.
Meta5ix is extremely weak and limited, really only enough for a compiler front-end; it can't, for example, do the kinds of RPN tricks we're talking about above.
What are some alternatives?
Gramformer - A framework for detecting, highlighting and correcting grammatical errors on natural language text. Created by Prithiviraj Damodaran. Open to pull requests and other forms of collaboration.
proofs - My personal repository of formally verified mathematics.
PyLFG - PyLFG is a Python library for working within the Lexical Functional Grammar (LFG) formalism. It provides a set of classes and methods for representing and manipulating LFG structures, including f-structures and c-structures.
peg-bootstrap - A PEG that compiles itself.
pke - Python Keyphrase Extraction module
pyparsing - Python library for creating PEG parsers
loquax - NLP framework for phonology
stoneknifeforth - a tiny self-hosted Forth implementation
grzegorz - A comand-line phonetics tool for finding minimal pairs
PEGTL - Parsing Expression Grammar Template Library