/src/lib/regular_expression/internal/regular_expression_items/regular_expression_item_range.e
Specman e | 57 lines | 24 code | 6 blank | 27 comment | 1 complexity | 79252d8aaa99f0a2732ca9d65a7c395e MD5 | raw file
1-- This file is part of a Liberty Eiffel library. 2-- See the full copyright at the end. 3-- 4class REGULAR_EXPRESSION_ITEM_RANGE 5 -- 6 -- accept a character in a range 7 -- 8 9inherit 10 REGULAR_EXPRESSION_ITEM 11 12create {ANY} 13 make 14 15feature {ANY} 16 lower, upper: CHARACTER 17 -- lower and upper range 18 19 make (low, up: CHARACTER) 20 do 21 lower := low 22 upper := up 23 ensure 24 definition: lower = low and upper = up 25 end 26 27 explore (matcher: BACKTRACKING_REGULAR_EXPRESSION) 28 do 29 if matcher.valid_last_character and then matcher.last_character.in_range(lower, upper) then 30 matcher.advance 31 matcher.continue 32 else 33 matcher.backtrack 34 end 35 end 36 37end -- class REGULAR_EXPRESSION_ITEM_RANGE 38-- 39-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file. 40-- 41-- Permission is hereby granted, free of charge, to any person obtaining a copy 42-- of this software and associated documentation files (the "Software"), to deal 43-- in the Software without restriction, including without limitation the rights 44-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 45-- copies of the Software, and to permit persons to whom the Software is 46-- furnished to do so, subject to the following conditions: 47-- 48-- The above copyright notice and this permission notice shall be included in 49-- all copies or substantial portions of the Software. 50-- 51-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 52-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 53-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 54-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 55-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 56-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 57-- THE SOFTWARE.