/vendor/gems/coderay-0.9.7/lib/coderay/scanners/yaml.rb
Ruby | 140 lines | 123 code | 13 blank | 4 comment | 23 complexity | f62eab25adbef42e92cad3f5463f91ac MD5 | raw file
- module CodeRay
- module Scanners
-
- # YAML Scanner
- #
- # Based on the YAML scanner from Syntax by Jamis Buck.
- class YAML < Scanner
-
- register_for :yaml
- file_extension 'yml'
-
- KINDS_NOT_LOC = :all
-
- def scan_tokens tokens, options
-
- value_expected = nil
- state = :initial
- key_indent = indent = 0
-
- until eos?
-
- kind = nil
- match = nil
- key_indent = nil if bol?
-
- if match = scan(/ +[\t ]*/)
- kind = :space
-
- elsif match = scan(/\n+/)
- kind = :space
- state = :initial if match.index(?\n)
-
- elsif match = scan(/#.*/)
- kind = :comment
-
- elsif bol? and case
- when match = scan(/---|\.\.\./)
- tokens << [:open, :head]
- tokens << [match, :head]
- tokens << [:close, :head]
- next
- when match = scan(/%.*/)
- tokens << [match, :doctype]
- next
- end
-
- elsif state == :value and case
- when !check(/(?:"[^"]*")(?=: |:$)/) && scan(/"/)
- tokens << [:open, :string]
- tokens << [matched, :delimiter]
- tokens << [matched, :content] if scan(/ [^"\\]* (?: \\. [^"\\]* )* /mx)
- tokens << [matched, :delimiter] if scan(/"/)
- tokens << [:close, :string]
- next
- when match = scan(/[|>][-+]?/)
- tokens << [:open, :string]
- tokens << [match, :delimiter]
- string_indent = key_indent || column(pos - match.size - 1)
- tokens << [matched, :content] if scan(/(?:\n+ {#{string_indent + 1}}.*)+/)
- tokens << [:close, :string]
- next
- when match = scan(/(?![!"*&]).+?(?=$|\s+#)/)
- tokens << [match, :string]
- string_indent = key_indent || column(pos - match.size - 1)
- tokens << [matched, :string] if scan(/(?:\n+ {#{string_indent + 1}}.*)+/)
- next
- end
-
- elsif case
- when match = scan(/[-:](?= |$)/)
- state = :value if state == :colon && (match == ':' || match == '-')
- state = :value if state == :initial && match == '-'
- kind = :operator
- when match = scan(/[,{}\[\]]/)
- kind = :operator
- when state == :initial && match = scan(/[\w.() ]*\S(?=: |:$)/)
- kind = :key
- key_indent = column(pos - match.size - 1)
- # tokens << [key_indent.inspect, :debug]
- state = :colon
- when match = scan(/(?:"[^"\n]*"|'[^'\n]*')(?=: |:$)/)
- tokens << [:open, :key]
- tokens << [match[0,1], :delimiter]
- tokens << [match[1..-2], :content]
- tokens << [match[-1,1], :delimiter]
- tokens << [:close, :key]
- key_indent = column(pos - match.size - 1)
- # tokens << [key_indent.inspect, :debug]
- state = :colon
- next
- when scan(/(![\w\/]+)(:([\w:]+))?/)
- tokens << [self[1], :type]
- if self[2]
- tokens << [':', :operator]
- tokens << [self[3], :class]
- end
- next
- when scan(/&\S+/)
- kind = :variable
- when scan(/\*\w+/)
- kind = :global_variable
- when scan(/<</)
- kind = :class_variable
- when scan(/\d\d:\d\d:\d\d/)
- kind = :oct
- when scan(/\d\d\d\d-\d\d-\d\d\s\d\d:\d\d:\d\d(\.\d+)? [-+]\d\d:\d\d/)
- kind = :oct
- when scan(/:\w+/)
- kind = :symbol
- when scan(/[^:\s]+(:(?! |$)[^:\s]*)* .*/)
- kind = :error
- when scan(/[^:\s]+(:(?! |$)[^:\s]*)*/)
- kind = :error
- end
-
- else
- getch
- kind = :error
-
- end
-
- match ||= matched
-
- if $CODERAY_DEBUG and not kind
- raise_inspect 'Error token %p in line %d' %
- [[match, kind], line], tokens, state
- end
- raise_inspect 'Empty token', tokens, state unless match
-
- tokens << [match, kind]
-
- end
-
- tokens
- end
-
- end
-
- end
- end