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if node.count then
return
end
local type = type
local node = node
local direct = node.direct
local todirect = direct.tovaliddirect
local tonode = direct.tonode
local count = direct.count
local length = direct.length
local slide = direct.slide
function node.count(id,first,last)
return count(id,first and todirect(first), last and todirect(last) or nil)
end
function node.length(first,last)
return length(first and todirect(first), last and todirect(last) or nil)
end
function node.slide(n)
if n then
n = slide(todirect(n))
if n then
return tonode(n)
end
end
return nil
end
local hyphenating = direct.hyphenating
local ligaturing = direct.ligaturing
local kerning = direct.kerning
-- kind of inconsistent
function node.hyphenating(first,last)
if first then
local h, t = hyphenating(todirect(first), last and todirect(last) or nil)
return h and tonode(h) or nil, t and tonode(t) or nil, true
else
return nil, false
end
end
function node.ligaturing(first,last)
if first then
local h, t = ligaturing(todirect(first), last and todirect(last) or nil)
return h and tonode(h) or nil, t and tonode(t) or nil, true
else
return nil, false
end
end
function node.kerning(first,last)
if first then
local h, t = kerning(todirect(first), last and todirect(last) or nil)
return h and tonode(h) or nil, t and tonode(t) or nil, true
else
return nil, false
end
end
local protect_glyph = direct.protect_glyph
local unprotect_glyph = direct.unprotect_glyph
local protect_glyphs = direct.protect_glyphs
local unprotect_glyphs = direct.unprotect_glyphs
function node.protect_glyphs(first,last)
protect_glyphs(todirect(first), last and todirect(last) or nil)
end
function node.unprotect_glyphs(first,last)
unprotect_glyphs(todirect(first), last and todirect(last) or nil)
end
function node.protect_glyph(first)
protect_glyph(todirect(first))
end
function node.unprotect_glyph(first)
unprotect_glyph(todirect(first))
end
local flatten_discretionaries = direct.flatten_discretionaries
local check_discretionaries = direct.check_discretionaries
local check_discretionary = direct.check_discretionary
function node.flatten_discretionaries(first)
local h, count = flatten_discretionaries(todirect(first))
return tonode(h), count
end
function node.check_discretionaries(n)
check_discretionaries(todirect(n))
end
function node.check_discretionary(n)
check_discretionary(todirect(n))
end
local hpack = direct.hpack
local vpack = direct.vpack
local list_to_hlist = direct.mlist_to_hlist
function node.hpack(head,...)
local h, badness = hpack(head and todirect(head) or nil,...)
return tonode(h), badness
end
function node.vpack(head,...)
local h, badness = vpack(head and todirect(head) or nil,...)
return tonode(h), badness
end
function node.mlist_to_hlist(head,...)
return tonode(mlist_to_hlist(head and todirect(head) or nil,...))
end
local end_of_math = direct.end_of_math
local find_attribute = direct.find_attribute
local first_glyph = direct.first_glyph
function node.end_of_math(n)
if n then
n = end_of_math(todirect(n))
if n then
return tonode(n)
end
end
return nil
end
function node.find_attribute(n,a)
if n then
local v, n = find_attribute(todirect(n),a)
if n then
return v, tonode(n)
end
end
return nil
end
function node.first_glyph(first,last)
local n = first_glyph(todirect(first), last and todirect(last) or nil)
return n and tonode(n) or nil
end
local dimensions = direct.dimensions
local rangedimensions = direct.rangedimensions
local effective_glue = direct.effective_glue
function node.dimensions(a,b,c,d,e)
if type(a) == "userdata" then
a = todirect(a)
if type(b) == "userdata" then
b = todirect(b)
end
return dimensions(a,b)
else
d = todirect(d)
if type(e) == "userdata" then
e = todirect(e)
end
return dimensions(a,b,c,d,e)
end
return 0, 0, 0
end
function node.rangedimensions(parent,first,last)
return rangedimenensions(todirect(parent),todirect(first),last and todirect(last))
end
function node.effective_glue(list,parent)
return effective_glue(list and todirect(list) or nil,parent and todirect(parent) or nil)
end
local uses_font = direct.uses_font
local has_glyph = direct.has_glyph
local protrusion_skippable = direct.protrusion_skippable
local prepend_prevdepth = direct.prepend_prevdepth
local make_extensible = direct.make_extensible
function node.uses_font(n,f)
return uses_font(todirect(n),f)
end
function node.has_glyph(n)
return has_glyph(todirect(n))
end
function node.protrusion_skippable(n)
return protrusion_skippable(todirect(n))
end
function node.prepend_prevdepth(n)
local n, d = prepend_prevdepth(todirect(n))
return tonode(n), d
end
function node.make_extensible(...)
local n = make_extensible(...)
return n and tonode(n) or nil
end
local last_node = direct.last_node
function node.last_node()
local n = last_node()
return n and tonode(n) or nil
end
local is_zero_glue = direct.is_zero_glue
local getglue = direct.getglue
local setglue = direct.setglue
function node.is_zero_glue(n)
return is_zero_glue(todirect(n))
end
function node.get_glue(n)
return get_glue(todirect(n))
end
function node.set_glue(n)
return set_glue(todirect(n))
end
node.family_font = tex.getfontoffamily
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