diff options
Diffstat (limited to 'tex/context/base/math-tag.lua')
| -rw-r--r-- | tex/context/base/math-tag.lua | 86 |
1 files changed, 45 insertions, 41 deletions
diff --git a/tex/context/base/math-tag.lua b/tex/context/base/math-tag.lua index 7960c014f..278e3b9cb 100644 --- a/tex/context/base/math-tag.lua +++ b/tex/context/base/math-tag.lua @@ -6,35 +6,40 @@ if not modules then modules = { } end modules ['math-tag'] = { license = "see context related readme files" } -local has_attribute = nodes.has_attribute -local set_attribute = nodes.set_attribute -local set_attributes = nodes.set_attributes -local traverse_nodes = node.traverse +local attributes, nodes = attributes, nodes -local nodecodes = nodes.nodecodes +local has_attribute = nodes.has_attribute +local set_attribute = nodes.set_attribute +local set_attributes = nodes.set_attributes +local traverse_nodes = node.traverse -local math_noad = nodecodes.noad -- attr nucleus sub sup -local math_noad = nodecodes.noad -- attr nucleus sub sup -local math_accent = nodecodes.accent -- attr nucleus sub sup accent -local math_radical = nodecodes.radical -- attr nucleus sub sup left degree -local math_fraction = nodecodes.fraction -- attr nucleus sub sup left right -local math_box = nodecodes.sub_box -- attr list -local math_sub = nodecodes.sub_mlist -- attr list -local math_char = nodecodes.math_char -- attr fam char -local math_text_char = nodecodes.math_text_char -- attr fam char -local math_delim = nodecodes.delim -- attr small_fam small_char large_fam large_char -local math_style = nodecodes.style -- attr style -local math_choice = nodecodes.choice -- attr display text script scriptscript -local math_fence = nodecodes.fence -- attr subtype +local nodecodes = nodes.nodecodes -local hlist = nodecodes.hlist -local vlist = nodecodes.vlist -local glyph = nodecodes.glyph +local math_noad_code = nodecodes.noad -- attr nucleus sub sup +local math_accent_code = nodecodes.accent -- attr nucleus sub sup accent +local math_radical_code = nodecodes.radical -- attr nucleus sub sup left degree +local math_fraction_code = nodecodes.fraction -- attr nucleus sub sup left right +local math_box_code = nodecodes.subbox -- attr list +local math_sub_code = nodecodes.submlist -- attr list +local math_char_code = nodecodes.mathchar -- attr fam char +local math_textchar_code = nodecodes.mathtextchar -- attr fam char +local math_delim_code = nodecodes.delim -- attr small_fam small_char large_fam large_char +local math_style_code = nodecodes.style -- attr style +local math_choice_code = nodecodes.choice -- attr display text script scriptscript +local math_fence_code = nodecodes.fence -- attr subtype -local a_tagged = attributes.private('tagged') +local hlist_code = nodecodes.hlist +local vlist_code = nodecodes.vlist +local glyph_code = nodecodes.glyph + +local a_tagged = attributes.private('tagged') + +local tags = structures.tags + +local start_tagged = tags.start +local stop_tagged = tags.stop +local taglist = tags.taglist -local start_tagged = structure.tags.start -local stop_tagged = structure.tags.stop local chardata = characters.data local process @@ -67,7 +72,7 @@ end process = function(start) -- we cannot use the processor as we have no finalizers (yet) while start do local id = start.id - if id == math_char then + if id == math_char_code then -- check for code local ch = chardata[start.char] local mc = ch and ch.mathclass @@ -80,22 +85,22 @@ process = function(start) -- we cannot use the processor as we have no finalizer end stop_tagged() break - elseif id == math_text_char then + elseif id == math_textchar_code then -- check for code set_attribute(start,a_tagged,start_tagged("ms")) stop_tagged() break - elseif id == math_delim then + elseif id == math_delim_code then -- check for code set_attribute(start,a_tagged,start_tagged("mo")) stop_tagged() break - elseif id == math_style then + elseif id == math_style_code then -- has a next - elseif id == math_noad then + elseif id == math_noad_code then processsubsup(start) - elseif id == math_box or id == hlist or id == vlist then - -- keep an eye on math_box and see what ends up in there + elseif id == math_box_code or id == hlist_code or id == vlist_code then + -- keep an eye on math_box_code and see what ends up in there local attr = has_attribute(start,a_tagged) local text = start_tagged("mtext") set_attribute(start,a_tagged,text) @@ -110,16 +115,15 @@ process = function(start) -- we cannot use the processor as we have no finalizer -- need to nest. This approach is a hack, maybe I'll make a proper -- nesting feature to deal with this at another level. Here we just -- fake structure by enforcing the inner one. - local taglist = structure.tags.taglist local tagdata = taglist[attr] local common = #tagdata + 1 local function runner(list) -- quite inefficient local cache = { } -- we can have nested unboxed mess so best local to runner for n in traverse_nodes(list) do local id = n.id - if id == hlist or id == vlist then + if id == hlist_code or id == vlist_code then runner(n.list) - elseif id == glyph then + elseif id == glyph_code then local aa = has_attribute(n,a_tagged) -- only glyph needed if aa then local ac = cache[aa] @@ -148,14 +152,14 @@ process = function(start) -- we cannot use the processor as we have no finalizer runner(list) end stop_tagged() - elseif id == math_sub then + elseif id == math_sub_code then local list = start.list if list then set_attribute(start,a_tagged,start_tagged("mrow")) process(list) stop_tagged() end - elseif id == math_fraction then + elseif id == math_fraction_code then local num, denom, left, right = start.num, start.denom, start.left, start.right if left then set_attribute(left,a_tagged,start_tagged("mo")) @@ -171,7 +175,7 @@ process = function(start) -- we cannot use the processor as we have no finalizer process(right) stop_tagged() end - elseif id == math_choice then + elseif id == math_choice_code then local display, text, script, scriptscript = start.display, start.text, start.script, start.scriptscript if display then process(display) @@ -185,14 +189,14 @@ process = function(start) -- we cannot use the processor as we have no finalizer if scriptscript then process(scriptscript) end - elseif id == math_fence then + elseif id == math_fence_code then local delim = start.delim if delim then set_attribute(start,a_tagged,start_tagged("mo")) process(delim) stop_tagged() end - elseif id == math_radical then + elseif id == math_radical_code then local left, degree = start.left, start.degree if left then process(left) -- mrow needed ? @@ -207,7 +211,7 @@ process = function(start) -- we cannot use the processor as we have no finalizer processsubsup(start) stop_tagged() end - elseif id == math_accent then + elseif id == math_accent_code then local accent, bot_accent = start.accent, start.bot_accent if bot_accent then if accent then @@ -238,7 +242,7 @@ process = function(start) -- we cannot use the processor as we have no finalizer end end -function noads.add_tags(head,style,penalties) +function noads.handlers.tags(head,style,penalties) set_attribute(head,a_tagged,start_tagged("math")) set_attribute(head,a_tagged,start_tagged("mrow")) process(head) |