Class: Dusen::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/dusen/parser.rb

Constant Summary collapse

WESTERNISH_WORD_CHARACTER =

this is wrong on so many levels

'\\w\\-\\.;@_ÄÖÜäöüß'
TEXT_QUERY = 
/(?:"([^"]+)"|([#{WESTERNISH_WORD_CHARACTER}]+))/
FIELD_QUERY = 
/(\w+)\:#{TEXT_QUERY}/

Class Method Summary collapse

Class Method Details

.extract_field_query_tokens(query_string, query) ⇒ Object 



25
26
27
28
29
30
31
 
# File 'lib/dusen/parser.rb', line 25

def self.extract_field_query_tokens(query_string, query)
  while query_string.sub!(FIELD_QUERY, '')
    field = $1
    value = "#{$2}#{$3}"
    query << Token.new(field, value)
  end
end

.extract_text_query_tokens(query_string, query) ⇒ Object 



18
19
20
21
22
23
 
# File 'lib/dusen/parser.rb', line 18

def self.extract_text_query_tokens(query_string, query)
  while query_string.sub!(TEXT_QUERY, '')
    value = "#{$1}#{$2}"
    query << Token.new(value)
  end
end

.parse(query_string) ⇒ Object 



10
11
12
13
14
15
16
 
# File 'lib/dusen/parser.rb', line 10

def self.parse(query_string)
  query_string = query_string.dup # we are going to delete substrings in-place
  query = Query.new
  extract_field_query_tokens(query_string, query)
  extract_text_query_tokens(query_string, query)
  query
end