rocky / foxysheep2 Goto Github PK

i get this error on running the binary

Traceback (most recent call last):
  File "/home/antineutrino/.local/bin/foxy-sheep", line 5, in <module>
    from FoxySheep.__main__ import main
  File "/home/antineutrino/.local/lib/python3.7/site-packages/FoxySheep/__init__.py", line 13, in <module>
    from FoxySheep.emitter.full_form import FullFormEmitter, input_form_to_full_form
ModuleNotFoundError: No module named 'FoxySheep.emitter'

My deep dive into Mathematica's operators and characters occurred after the last commit to the lexer. I would not trust the Letter and Letterlike lists to be 100% complete, nor do I think I included all named characters. I might be missing a small number of obscure operators, too.

More information that you probably want: What is really amazing is, determining membership in the set of Mathematica LetterLike characters is an open problem. Or more accurately, which of the valid Unicode characters Mathematica accepts as a valid variable name is an open question. There are a few reasons for this:

1. The notebook frontend insists on re-interpreting input as the user writes it and can reinterpret characters that the kernel would otherwise treat as a letter/identifier as implicit multiplication.
2. There are various built-in functions that should tell you which characters can be used as identifiers, but it appears there are counterexamples to all of these methods.

One strategy is to use the undocumented Mathematica system file UnicodeCharacters.tr, which contains data about most characters. Another strategy is to use the output of one of the built-in functions.

An example of inconsistent behavior:

In[1]:= isLetter[char_]:= StringMatchQ[char, LetterCharacter]

In[2]:= isLetter["\[RawEscape]"]
Out[2]= True

In[3]:= LetterLikeQ["\[RawEscape]"]
Out[3]= False

In[4]:= isLetter["\[BlackKing]"]
Out[4]= False

In[5]:= LetterLikeQ["\[BlackKing]"]
Out[5]= LetterLikeQ[♚]
(*  ?!? Remains unevaluated. *)

In[8]:= \[BlackKing] = 7
Out[8]= 7

In[9]:= \[BlackKing]^2
Out[9]= 49

So LetterLike and "can be used as a variable" are distinct concepts. The output of these functions might change from version to version as well.

Document or describe the different flavors of Mathematica? (InputForm/FullForm dimension, notebook/cloud/.. platform)
In particular what's changed between releases. As an example for something similar, be See Section 4 page 166 of http://rocky.github.io/elisp-bytecode.pdf

Ideally, variants of the grammar would exist. I just googled to see if ANTL4 has includes. Not directly, but see https://stackoverflow.com/questions/56289605/how-to-implement-include-files-in-antlr/63280459#63280459