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EWF/library/parser/json_reader.e
Jocelyn Fiat 19dbbf89e7 Fixed various issue with parsing string (such as \t and related),
Implemented escaping of slash '/' only in case of '</' to avoid potential issue with javascript and </script>
Many feature renaming to match Eiffel style and naming convention, kept previous feature as obsolete.
Restructured the library to make easy extraction of "converter" classes if needed in the future.
Updated part of the code to use new feature names.
2014-09-24 20:08:12 +02:00

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note
description: "Objects that ..."
author: "jvelilla"
date: "2008/08/24"
revision: "0.1"
class
JSON_READER
create
make
feature {NONE} -- Initialization
make (a_json: STRING)
-- Initialize Reader
do
set_representation (a_json)
end
feature -- Commands
reset
-- Reset reader
do
index := 1
end
set_representation (a_json: STRING)
-- Set `representation'.
do
a_json.left_adjust
a_json.right_adjust
representation := a_json
reset
end
read: CHARACTER
-- Read character
do
if not representation.is_empty then
Result := representation.item (index)
end
end
next
-- Move to next index
require
has_more_elements: has_next
do
index := index + 1
ensure
incremented: old index + 1 = index
end
previous
-- Move to previous index
require
not_is_first: has_previous
do
index := index - 1
ensure
incremented: old index - 1 = index
end
skip_white_spaces
-- Remove white spaces
local
c: like actual
do
from
c := actual
until
(c /= ' ' and c /= '%N' and c /= '%R' and c /= '%U' and c /= '%T') or not has_next
loop
next
c := actual
end
end
json_substring (start_index, end_index: INTEGER_32): STRING
-- JSON representation between `start_index' and `end_index'
do
Result := representation.substring (start_index, end_index)
end
feature -- Status report
has_next: BOOLEAN
-- Has a next character?
do
Result := index <= representation.count
end
has_previous: BOOLEAN
-- Has a previous character?
do
Result := index >= 1
end
feature -- Access
representation: STRING
-- Serialized representation of the original JSON string
feature {NONE} -- Implementation
actual: CHARACTER
-- Current character or '%U' if none
do
if index > representation.count then
Result := '%U'
else
Result := representation.item (index)
end
end
index: INTEGER
-- Actual index
invariant
representation_not_void: representation /= Void
end