indexing
description: "Iterator for pixel values of EV_PIXEL_BUFFER"
author: ""
date: "$Date: 2006-08-01 00:33:25 -0700 (Tue, 01 Aug 2006) $"
revision: "$Revision: 62191 $"
class interface
EV_PIXEL_BUFFER_ITERATOR
create {EV_PIXEL_BUFFER_I}
make_for_pixel_buffer (a_pixel_buffer: EV_PIXEL_BUFFER)
`a_pixel_buffer'
feature
generating_type: STRING_8
ANY
generator: STRING_8
ANY
has (v: like item): BOOLEAN
`v'
object_comparison
LINEAR
ensure CONTAINER
not_found_in_empty: Result implies not is_empty
index_of (v: like item; i: INTEGER_32): INTEGER_32
`i'`v'
object_comparison
LINEAR
require LINEAR
positive_occurrences: i > 0
ensure LINEAR
non_negative_result: Result >= 0
occurrences (v: like item): INTEGER_32
`v'
object_comparison
LINEAR
off: BOOLEAN
BILINEAR
require TRAVERSABLE
True
feature
frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
`some'`other'
ANY
ensure ANY
shallow_implies_deep: standard_equal (some, other) implies Result
both_or_none_void: (some = Void) implies (Result = (other = Void))
same_type: (Result and (some /= Void)) implies some.same_type (other)
symmetric: Result implies deep_equal (other, some)
frozen equal (some: ANY; other: like arg #1): BOOLEAN
`some'`other'
ANY
ensure ANY
definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.is_equal (other))
is_equal (other: like Current): BOOLEAN
`other'
ANY
require ANY
other_not_void: other /= Void
ensure ANY
symmetric: Result implies other.is_equal (Current)
consistent: standard_is_equal (other) implies Result
frozen standard_equal (some: ANY; other: like arg #1): BOOLEAN
`some'`other'
ANY
ensure ANY
definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.standard_is_equal (other))
frozen standard_is_equal (other: like Current): BOOLEAN
`other'
ANY
require ANY
other_not_void: other /= Void
ensure ANY
same_type: Result implies same_type (other)
symmetric: Result implies other.standard_is_equal (Current)
feature
changeable_comparison_criterion: BOOLEAN
object_comparison
CONTAINER
conforms_to (other: ANY): BOOLEAN
`other'
ANY
require ANY
other_not_void: other /= Void
exhausted: BOOLEAN
LINEAR
ensure LINEAR
exhausted_when_off: off implies Result
object_comparison: BOOLEAN
equal`='
`='
CONTAINER
same_type (other: ANY): BOOLEAN
`other'
ANY
require ANY
other_not_void: other /= Void
ensure ANY
definition: Result = (conforms_to (other) and other.conforms_to (Current))
feature
compare_objects
equal
`='
CONTAINER
require CONTAINER
changeable_comparison_criterion: changeable_comparison_criterion
ensure CONTAINER
object_comparison
compare_references
`='
equal
CONTAINER
require CONTAINER
changeable_comparison_criterion: changeable_comparison_criterion
ensure CONTAINER
reference_comparison: not object_comparison
feature
search (v: like item)
item`v'
`v'
exhausted
object_comparison
BILINEAR
ensure LINEAR
object_found: (not exhausted and object_comparison) implies equal (v, item)
item_found: (not exhausted and not object_comparison) implies v = item
feature
linear_representation: LINEAR [EV_PIXEL_BUFFER_PIXEL]
LINEAR
feature
copy (other: like Current)
`other'
ANY
require ANY
other_not_void: other /= Void
type_identity: same_type (other)
ensure ANY
is_equal: is_equal (other)
frozen deep_copy (other: like Current)
copy`other'deep_twin
ANY
require ANY
other_not_void: other /= Void
ensure ANY
deep_equal: deep_equal (Current, other)
frozen deep_twin: like Current
ANY
ensure ANY
deep_equal: deep_equal (Current, Result)
frozen standard_copy (other: like Current)
`other'
ANY
require ANY
other_not_void: other /= Void
type_identity: same_type (other)
ensure ANY
is_standard_equal: standard_is_equal (other)
frozen standard_twin: like Current
`other'
ANY
ensure ANY
standard_twin_not_void: Result /= Void
equal: standard_equal (Result, Current)
frozen twin: like Current
`Current'
twincopycopy
ANY
ensure ANY
twin_not_void: Result /= Void
is_equal: Result.is_equal (Current)
feature
frozen default: like Current
ANY
frozen default_pointer: POINTER
`POINTER'
`p'default
`p'`POINTER'
ANY
default_rescue
ANY
frozen do_nothing
ANY
feature
after: BOOLEAN
back
require BILINEAR
not_before: not before
before: BOOLEAN
column: NATURAL_32 assign set_column
item
finish
forth
require LINEAR
not_after: not after
index: INTEGER_32
is_empty: BOOLEAN
item: EV_PIXEL_BUFFER_PIXEL
require TRAVERSABLE
not_off: not off
max_column_value: NATURAL_32
max_row_value: NATURAL_32
row: NATURAL_32 assign set_row
item
set_column (a_column: NATURAL_32)
`a_column'pixel_buffer
require
a_column_valid: a_column >= 1 and then a_column <= max_column_value
set_row (a_row: NATURAL_32)
`a_row'pixel_buffer
require
a_row_valid: a_row >= 1 and then a_row <= max_row_value
start
update_pixel (a_column, a_row: NATURAL_32; a_pixel: EV_PIXEL_BUFFER_PIXEL)
`a_column'`a_row'`a_pixel'
require
a_column_valid: a_column >= 1 and then a_column <= max_column_value
a_row_valid: a_row >= 1 and then a_row <= max_row_value
feature
do_all (action: PROCEDURE [ANY, TUPLE [EV_PIXEL_BUFFER_PIXEL]])
`action'
`action'
LINEAR
require TRAVERSABLE
action_exists: action /= Void
do_if (action: PROCEDURE [ANY, TUPLE [EV_PIXEL_BUFFER_PIXEL]]; test: FUNCTION [ANY, TUPLE [EV_PIXEL_BUFFER_PIXEL], BOOLEAN])
`action'`test'
`action'`test'
LINEAR
require TRAVERSABLE
action_exists: action /= Void
test_exits: test /= Void
for_all (test: FUNCTION [ANY, TUPLE [EV_PIXEL_BUFFER_PIXEL], BOOLEAN]): BOOLEAN
`test'
`test'
LINEAR
require TRAVERSABLE
test_exits: test /= Void
ensure then LINEAR
empty: is_empty implies Result
there_exists (test: FUNCTION [ANY, TUPLE [EV_PIXEL_BUFFER_PIXEL], BOOLEAN]): BOOLEAN
`test'
`test'
LINEAR
require TRAVERSABLE
test_exits: test /= Void
feature
io: STD_FILES
ANY
out: STRING_8
ANYtagged_out
ANY
print (some: ANY)
`some'
ANY
frozen tagged_out: STRING_8
ANYout
ANY
feature
operating_environment: OPERATING_ENVIRONMENT
ANY
invariant
BILINEAR
not_both: not (after and before)
before_constraint: before implies off
LINEAR
after_constraint: after implies off
TRAVERSABLE
empty_constraint: is_empty implies off
ANY
reflexive_equality: standard_is_equal (Current)
reflexive_conformance: conforms_to (Current)
end EV_PIXEL_BUFFER_ITERATOR