Class: CodeRay::Scanners::YAML
- Inherits:
-
Scanner
- Object
- StringScanner
- Scanner
- CodeRay::Scanners::YAML
- Defined in:
- vendor/plugins/coderay-0.9.2/lib/coderay/scanners/yaml.rb
Overview
YAML Scanner
Based on the YAML scanner from Syntax by Jamis Buck.
Constant Summary
- KINDS_NOT_LOC =
:all
Constants inherited from Scanner
DEFAULT_OPTIONS, KINDS_NOT_LOC, ScanError
Instance Method Summary
Methods inherited from Scanner
#column, #each, file_extension, #initialize, #line, #marshal_dump, #marshal_load, normify, #reset, streamable?, #streaming?, #string=, #tokenize, #tokens
Methods included from CodeRay::Plugin
#helper, #included, #plugin_host, #plugin_id, #register_for, #title
Constructor Details
This class inherits a constructor from CodeRay::Scanners::Scanner
Instance Method Details
- (Object) scan_tokens(tokens, options)
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# File 'vendor/plugins/coderay-0.9.2/lib/coderay/scanners/yaml.rb', line 14 def scan_tokens tokens, 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 |