Coverage for /home/tbone/.local/share/hatch/env/virtual/importnb-aVRh-lqt/released.interactive/lib/python3.9/site-packages/importnb/decoder.py: 93%

69 statements  

« prev     ^ index     » next       coverage.py v6.5.0, created at 2022-10-24 15:27 -0700

1import json 

2import linecache 

3import textwrap 

4from functools import partial 

5 

6 

7def quote(object, *, quotes="'''"): 

8 if quotes in object: 

9 quotes = '"""' 

10 return quotes + object + "\n" + quotes 

11 

12 

13from ._json_parser import Lark_StandAlone, Transformer, Tree 

14 

15 

16class Transformer(Transformer): 

17 def __init__( 

18 self, 

19 markdown=quote, 

20 code=textwrap.dedent, 

21 raw=partial(textwrap.indent, prefix="# "), 

22 **kwargs, 

23 ): 

24 super().__init__(**kwargs) 

25 

26 for key in ("markdown", "code", "raw"): 

27 setattr(self, "transform_" + key, locals().get(key)) 

28 

29 def string(self, s): 

30 return s[0].line, json.loads(s[0]) 

31 

32 def item(self, s): 

33 key = s[0][-1] 

34 if key == "cells": 

35 if not isinstance(s[-1], Tree): 

36 return self.render(list(map(dict, s[-1]))) 

37 elif key in {"source", "text"}: 

38 return key, s[-1] 

39 elif key == "cell_type": 

40 if isinstance(s[-1], tuple): 

41 return key, s[-1][-1] 

42 

43 def array(self, s): 

44 if s: 

45 return s 

46 return [] 

47 

48 def object(self, s): 

49 return [x for x in s if x is not None] 

50 

51 def render_one(self, kind, lines): 

52 s = "".join(lines) 

53 if not s.endswith(("\n",)): 

54 s += "\n" 

55 return getattr(self, f"transform_{kind}")(s) 

56 

57 def render(self, x): 

58 body = [] 

59 for token in x: 

60 t = token.get("cell_type") 

61 try: 

62 s = token["source"] 

63 except KeyError: 

64 s = token.get("text") 

65 if s: 

66 if not isinstance(s, list): 

67 s = [s] 

68 l, lines = s[0][0], [x[1] for x in s] 

69 body.extend([""] * (l - len(body))) 

70 lines = self.render_one(t, lines) 

71 body.extend(lines.splitlines()) 

72 return "\n".join(body + [""]) 

73 

74 

75class LineCacheNotebookDecoder(Transformer): 

76 def __init__( 

77 self, 

78 markdown=quote, 

79 code=textwrap.dedent, 

80 raw=partial(textwrap.indent, prefix="# "), 

81 **kwargs, 

82 ): 

83 super().__init__(**kwargs) 

84 

85 for key in ("markdown", "code", "raw"): 

86 setattr(self, "transform_" + key, locals().get(key)) 

87 

88 def source_from_json_grammar(self, object): 

89 return Lark_StandAlone(transformer=self).parse(object) 

90 

91 def decode(self, object, filename): 

92 s = self.source_from_json_grammar(object) 

93 if s: 

94 source = s[0] 

95 linecache.updatecache(filename) 

96 if filename in linecache.cache: 

97 linecache.cache[filename] = ( 

98 linecache.cache[filename][0], 

99 linecache.cache[filename][1], 

100 source.splitlines(True), 

101 filename, 

102 ) 

103 return source 

104 return ""