[squeak-dev] The Trunk: Collections-nice.520.mcz

commits at source.squeak.org commits at source.squeak.org
Thu May 30 22:24:30 UTC 2013


Nicolas Cellier uploaded a new version of Collections to project The Trunk:
http://source.squeak.org/trunk/Collections-nice.520.mcz

==================== Summary ====================

Name: Collections-nice.520
Author: nice
Time: 31 May 2013, 12:23:43.567 am
UUID: 6ef25398-faee-45ff-a409-52d3f36d98c8
Ancestors: Collections-fbs.519

Introduce Character null

=============== Diff against Collections-fbs.519 ===============

Item was changed:
  ----- Method: Character class>>constantNames (in category 'private') -----
  constantNames
+ 	^ #( backspace cr delete escape lf null newPage space tab ).!
- 	^ #( backspace cr delete escape lf newPage space tab ).!

Item was added:
+ ----- Method: Character class>>null (in category 'accessing untypeable characters') -----
+ null
+ 	^ self value: 0!

Item was changed:
  ----- Method: NullStream>>element (in category 'accessing') -----
  element
  	"The element returned by the stream"
  
+ 	^binary ifTrue:[0] ifFalse:[Character null]!
- 	^binary ifTrue:[0] ifFalse:[Character value: 0]!

Item was changed:
  ----- Method: String>>compressWithTable: (in category 'converting') -----
  compressWithTable: tokens
  	"Return a string with all substrings that occur in tokens replaced
  	by a character with ascii code = 127 + token index.
  	This will work best if tokens are sorted by size.
  	Assumes this string contains no characters > 127, or that they
  	are intentionally there and will not interfere with this process."
  	| str null finalSize result ri c |
+ 	null := Character null.
- 	null := Character value: 0.
  	str := self copyFrom: 1 to: self size.  "Working string will get altered"
  	finalSize := str size.
  	tokens doWithIndex:
  		[:token :tIndex |
  		| start ts |
  		start := 1.
  		[(start := str findString: token startingAt: start) > 0]
  			whileTrue:
  			[ts := token size.
  			((start + ts) <= str size
  				and: [(str at: start + ts) = $  and: [tIndex*2 <= 128]])
  				ifTrue: [ts := token size + 1.  "include training blank"
  						str at: start put: (Character value: tIndex*2 + 127)]
  				ifFalse: [str at: start put: (Character value: tIndex + 127)].
  			str at: start put: (Character value: tIndex + 127).
  			1 to: ts-1 do: [:i | str at: start+i put: null].
  			finalSize := finalSize - (ts - 1).
  			start := start + ts]].
  	result := String new: finalSize.
  	ri := 0.
  	1 to: str size do:
  		[:i | (c := str at: i) = null ifFalse: [result at: (ri := ri+1) put: c]].
  	^ result!



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