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Строка 36: − local table_tags = (function (list)+ − local set = {}+ − for _, tag in ipairs (list) do − set [tag] = true − end − return set − end) { 'table', 'thead', 'tbody', 'tfoot', 'tr', 'th', 'td' } − + − return P (quote) * Cg ((any - quote + backslash * quote / quote) ^ 0, 'value') * P (quote)+ − end Строка 40:
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вертикальная ассимиляция
local sort, concat = table.sort, table.concat
local sort, concat, clone = table.sort, table.concat, mw.clone
local match = mw.ustring.match
local lpeg = lpeg
local lpeg = lpeg
local P, S, V, C, Cg, Cb, Ct, Cf, Cmt = lpeg.P, lpeg.S, lpeg.V, lpeg.C, lpeg.Cg, lpeg.Cb, lpeg.Ct, lpeg.Cf, lpeg.Cmt
local P, S, V, C, Cg, Cb, Ct, Cf, Cmt = lpeg.P, lpeg.S, lpeg.V, lpeg.C, lpeg.Cg, lpeg.Cb, lpeg.Ct, lpeg.Cf, lpeg.Cmt
local colon, hyphen, equals = P':', P':', P'='
local colon, hyphen, equals = P':', P':', P'='
local possible = (function (list)
-- Service functions:
local function ordered_choice (list)
local choice = never
local choice = never
sort (list, function (a, b)
sort (list, function (a, b)
end
end
return choice
return choice
end) {
end
local function to_set (list)
local set = {}
for _, tag in ipairs (list) do
set [tag] = true
end
return set
end
-- Expected HTML tags:
local possible = ordered_choice {
'a', 'span', 'b', 'i', 'strong', 'em',
'a', 'span', 'b', 'i', 'strong', 'em',
'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
}
}
-- Only these tags can be legitimately empty:
local empty = to_set { 'th', 'td', 'br', 'hr' }
local function quoted (quote)
-- Table tags are unmergeable:
local table_set = to_set { 'table', 'thead', 'tbody', 'tfoot', 'tr', 'th', 'td' }
-- Return true, if node1 and node2 are tags ot the same type with exactly the same attributes:
-- Return true, if node1 and node2 are tags ot the same type with exactly the same attributes:
return false
return false
end
end
if table_tags [node1.__name] or table_tags [node2.__name] then
if table_set [node1.__name] or table_set [node2.__name] then
-- Table elements should not be merged:
return false
return false
end
end
-- Unmergeable:
-- Unmergeable:
return node1, node2
return node1, node2
end
-- If there is only one chilf node, and it can be safely assimilated into the parent node:
local function assimilate (node)
if #node == 0 or #node > 1 then
return node
end
local child = clone (node [1])
if type (child) == 'string' or table_set [node.__name] and not table_set [child.__name] or table_set [child.__name] then
return node
end
--if node.__name == child.__name then
for key, value in pairs (child) do
if key == 'style' and node [key] then
node [key] = node [key] .. '; ' .. value
else
node [key] = value
end
end
node [1] = child [1]
--end
return node
end
end
local function quoted (quote)
return P (quote) * Cg ((any - quote + backslash * quote / quote) ^ 0, 'value') * P (quote)
end
local grammar = P { V'fragment' * -1,
local grammar = P { V'fragment' * -1,
tag [#tag], tag [#tag + 1] = merge_nodes (tag [#tag], node)
tag [#tag], tag [#tag + 1] = merge_nodes (tag [#tag], node)
end
end
return tag
if type (tag [1]) == 'string' and match (tag [1], '^%s*$') and not empty [tag.__name] then
-- An empty tag of this type can be safely dropped:
return nil
end
return assimilate (tag) -- try to assimilate the only child.
end,
end,
open = lt * spaces * Cg (possible, '__name') * V'attributes' * spaces * gt,
open = lt * spaces * Cg (possible, '__name') * V'attributes' * spaces * gt,
test = function (frame)
test = function (frame)
return mw.dumpObject {grammar:match (test)}
return mw.dumpObject {grammar:match (test)}
end, same = same_tag_and_attributes
end
}
}