Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pygments/lexers/yang.py: 100%

1""" 

2 pygments.lexers.yang 

3 ~~~~~~~~~~~~~~~~~~~~ 

4 

5 Lexer for the YANG 1.1 modeling language. See :rfc:`7950`. 

6 

7 :copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS. 

8 :license: BSD, see LICENSE for details. 

9""" 

10 

11from pygments.lexer import RegexLexer, bygroups, words 

12from pygments.token import Text, Token, Name, String, Comment, Number 

13 

14__all__ = ['YangLexer'] 

15 

16 

17class YangLexer(RegexLexer): 

18 """ 

19 Lexer for YANG, based on RFC7950. 

20 

21 .. versionadded:: 2.7 

22 """ 

23 name = 'YANG' 

24 url = 'https://tools.ietf.org/html/rfc7950/' 

25 aliases = ['yang'] 

26 filenames = ['*.yang'] 

27 mimetypes = ['application/yang'] 

28 

29 #Keywords from RFC7950 ; oriented at BNF style 

30 TOP_STMTS_KEYWORDS = ("module", "submodule") 

31 MODULE_HEADER_STMT_KEYWORDS = ("belongs-to", "namespace", "prefix", "yang-version") 

32 META_STMT_KEYWORDS = ("contact", "description", "organization", 

33 "reference", "revision") 

34 LINKAGE_STMTS_KEYWORDS = ("import", "include", "revision-date") 

35 BODY_STMT_KEYWORDS = ("action", "argument", "augment", "deviation", 

36 "extension", "feature", "grouping", "identity", 

37 "if-feature", "input", "notification", "output", 

38 "rpc", "typedef") 

39 DATA_DEF_STMT_KEYWORDS = ("anydata", "anyxml", "case", "choice", 

40 "config", "container", "deviate", "leaf", 

41 "leaf-list", "list", "must", "presence", 

42 "refine", "uses", "when") 

43 TYPE_STMT_KEYWORDS = ("base", "bit", "default", "enum", "error-app-tag", 

44 "error-message", "fraction-digits", "length", 

45 "max-elements", "min-elements", "modifier", 

46 "ordered-by", "path", "pattern", "position", 

47 "range", "require-instance", "status", "type", 

48 "units", "value", "yin-element") 

49 LIST_STMT_KEYWORDS = ("key", "mandatory", "unique") 

50 

51 #RFC7950 other keywords 

52 CONSTANTS_KEYWORDS = ("add", "current", "delete", "deprecated", "false", 

53 "invert-match", "max", "min", "not-supported", 

54 "obsolete", "replace", "true", "unbounded", "user") 

55 

56 #RFC7950 Built-In Types 

57 TYPES = ("binary", "bits", "boolean", "decimal64", "empty", "enumeration", 

58 "identityref", "instance-identifier", "int16", "int32", "int64", 

59 "int8", "leafref", "string", "uint16", "uint32", "uint64", 

60 "uint8", "union") 

61 

62 suffix_re_pattern = r'(?=[^\w\-:])' 

63 

64 tokens = { 

65 'comments': [ 

66 (r'[^*/]', Comment), 

67 (r'/\*', Comment, '#push'), 

68 (r'\*/', Comment, '#pop'), 

69 (r'[*/]', Comment), 

70 ], 

71 "root": [ 

72 (r'\s+', Text.Whitespace), 

73 (r'[{};]+', Token.Punctuation), 

74 (r'(?<![\-\w])(and|or|not|\+|\.)(?![\-\w])', Token.Operator), 

75 

76 (r'"(?:\\"|[^"])*?"', String.Double), 

77 (r"'(?:\\'|[^'])*?'", String.Single), 

78 

79 (r'/\*', Comment, 'comments'), 

80 (r'//.*?$', Comment), 

81 

82 #match BNF stmt for `node-identifier` with [ prefix ":"] 

83 (r'(?:^|(?<=[\s{};]))([\w.-]+)(:)([\w.-]+)(?=[\s{};])', 

84 bygroups(Name.Namespace, Token.Punctuation, Name.Variable)), 

85 

86 #match BNF stmt `date-arg-str` 

87 (r'([0-9]{4}\-[0-9]{2}\-[0-9]{2})(?=[\s{};])', Name.Label), 

88 (r'([0-9]+\.[0-9]+)(?=[\s{};])', Number.Float), 

89 (r'([0-9]+)(?=[\s{};])', Number.Integer), 

90 

91 (words(TOP_STMTS_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

92 (words(MODULE_HEADER_STMT_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

93 (words(META_STMT_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

94 (words(LINKAGE_STMTS_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

95 (words(BODY_STMT_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

96 (words(DATA_DEF_STMT_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

97 (words(TYPE_STMT_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

98 (words(LIST_STMT_KEYWORDS, suffix=suffix_re_pattern), Token.Keyword), 

99 (words(TYPES, suffix=suffix_re_pattern), Name.Class), 

100 (words(CONSTANTS_KEYWORDS, suffix=suffix_re_pattern), Name.Class), 

101 

102 (r'[^;{}\s\'"]+', Name.Variable), 

103 ] 

104 }