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| author | murphy <murphy@rubychan.de> | 2005-11-05 02:58:16 +0000 |
|---|---|---|
| committer | murphy <murphy@rubychan.de> | 2005-11-05 02:58:16 +0000 |
| commit | c3dfbc335b14012df9968c6d64221cced3d444b6 (patch) | |
| tree | 619257edd9dab305c42d44ebf8ebd0bd5736cb68 /lib/coderay/helpers/scanner_helper.rb | |
| parent | 6f5ce67f72e5ff1f76ae52129653cd3367b1e083 (diff) | |
| download | coderay-c3dfbc335b14012df9968c6d64221cced3d444b6.tar.gz | |
scanner_helper.rb --> word_list.rb
Diffstat (limited to 'lib/coderay/helpers/scanner_helper.rb')
| -rw-r--r-- | lib/coderay/helpers/scanner_helper.rb | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/lib/coderay/helpers/scanner_helper.rb b/lib/coderay/helpers/scanner_helper.rb deleted file mode 100644 index 9f48b83..0000000 --- a/lib/coderay/helpers/scanner_helper.rb +++ /dev/null @@ -1,107 +0,0 @@ -module CodeRay
- module Scanners
-
- class Scanner
-
- # A WordList is a Hash with some additional features.
- # It is intended to be used for keyword recognition.
- #
- # WordList is highly optimized to be used in Scanners,
- # typically to decide whether a given ident is a keyword.
- #
- # Example:
- #
- # # define word arrays
- # RESERVED_WORDS = %w[
- # asm break case continue default do else
- # ...
- # ]
- #
- # PREDEFINED_TYPES = %w[
- # int long short char void
- # ...
- # ]
- #
- # PREDEFINED_CONSTANTS = %w[
- # EOF NULL ...
- # ]
- #
- # # make a WordList
- # IDENT_KIND = Scanner::WordList.new(:ident).
- # add(RESERVED_WORDS, :reserved).
- # add(PREDEFINED_TYPES, :pre_type).
- # add(PREDEFINED_CONSTANTS, :pre_constant)
- #
- # ...
- #
- # def scan_tokens tokens, options
- # ...
- #
- # elsif match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x)
- # # use it
- # kind = IDENT_KIND[match]
- # ...
- #
- class WordList < Hash
-
- # Creates a new WordList with +default+ as default value.
- # case_mode controls how keys are compared;
- # :case_match is faster.
- def initialize default = false, case_mode = :case_match
- @case_ignore =
- case case_mode
- when :case_match then false
- when :case_ignore then true
- else raise ArgumentError,
- ":case_ignore or :case_match expected, but #{case_mode} given"
- end
-
- if @case_ignore
- super() do |h, k|
- h[k] = h.fetch k.downcase, default
- end
- else
- super default
- end
- end
-
- # Checks if a word is included.
- def include? word
- self[word] if @case_ignore
- has_key? word
- end
-
- # Add words to the list and associate them with
- # +kind+.
- def add words, kind = true
- words.each do |word|
- self[mind_case(word)] = kind
- end
- self
- end
-
- alias words keys
-
- # Returns whether key comparing is done case insensitive.
- def case_ignore?
- @case_mode
- end
-
- private
- # helper method for key
- def mind_case word
- if @case_ignore
- word.downcase
- else
- word.dup
- end
- end
-
- end
-
- end
-
- end
-end
-
-# vim:sw=2:ts=2:noet:tw=78
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