diff options
Diffstat (limited to 'tex/context/base/lxml-lpt.lua')
| -rw-r--r-- | tex/context/base/lxml-lpt.lua | 74 |
1 files changed, 29 insertions, 45 deletions
diff --git a/tex/context/base/lxml-lpt.lua b/tex/context/base/lxml-lpt.lua index 51ab321b9..decb6567b 100644 --- a/tex/context/base/lxml-lpt.lua +++ b/tex/context/base/lxml-lpt.lua @@ -505,6 +505,9 @@ local function apply_expression(list,expression,order) return collected end +-- this one can be made faster but there are not that many conversions so it doesn't +-- really pay of + local P, V, C, Cs, Cc, Ct, R, S, Cg, Cb = lpeg.P, lpeg.V, lpeg.C, lpeg.Cs, lpeg.Cc, lpeg.Ct, lpeg.R, lpeg.S, lpeg.Cg, lpeg.Cb local spaces = S(" \n\r\t\f")^0 @@ -541,12 +544,11 @@ local lp_builtin = P ( local lp_attribute = (P("@") + P("attribute::")) / "" * Cc("(ll.at and ll.at['") * ((R("az","AZ") + S("-_:"))^1) * Cc("'])") --- lp_fastpos_p = (P("+")^0 * R("09")^1 * P(-1)) / function(s) return "l==" .. s end --- lp_fastpos_n = (P("-") * R("09")^1 * P(-1)) / function(s) return "(" .. s .. "<0 and (#list+".. s .. "==l))" end - -lp_fastpos_p = P("+")^0 * R("09")^1 * P(-1) / "l==%0" -lp_fastpos_n = P("-") * R("09")^1 * P(-1) / "(%0<0 and (#list+%0==l))" +----- lp_fastpos_p = (P("+")^0 * R("09")^1 * P(-1)) / function(s) return "l==" .. s end +----- lp_fastpos_n = (P("-") * R("09")^1 * P(-1)) / function(s) return "(" .. s .. "<0 and (#list+".. s .. "==l))" end +local lp_fastpos_p = P("+")^0 * R("09")^1 * P(-1) / "l==%0" +local lp_fastpos_n = P("-") * R("09")^1 * P(-1) / "(%0<0 and (#list+%0==l))" local lp_fastpos = lp_fastpos_n + lp_fastpos_p local lp_reserved = C("and") + C("or") + C("not") + C("div") + C("mod") + C("true") + C("false") @@ -806,7 +808,7 @@ local function nodesettostring(set,nodetest) if not ns or ns == "" then ns = "*" end if not tg or tg == "" then tg = "*" end tg = (tg == "@rt@" and "[root]") or format("%s:%s",ns,tg) - t[i] = (directive and tg) or format("not(%s)",tg) + t[#t+1] = (directive and tg) or format("not(%s)",tg) end if nodetest == false then return format("not(%s)",concat(t,"|")) @@ -1039,37 +1041,6 @@ local function normal_apply(list,parsed,nofparsed,order) return collected end ---~ local function applylpath(list,pattern) ---~ -- we avoid an extra call ---~ local parsed = cache[pattern] ---~ if parsed then ---~ lpathcalls = lpathcalls + 1 ---~ lpathcached = lpathcached + 1 ---~ elseif type(pattern) == "table" then ---~ lpathcalls = lpathcalls + 1 ---~ parsed = pattern ---~ else ---~ parsed = lpath(pattern) or pattern ---~ end ---~ if not parsed then ---~ return ---~ end ---~ local nofparsed = #parsed ---~ if nofparsed == 0 then ---~ return -- something is wrong ---~ end ---~ local one = list[1] -- we could have a third argument: isroot and list or list[1] or whatever we like ... todo ---~ if not one then ---~ return -- something is wrong ---~ elseif not trace_lpath then ---~ return normal_apply(list,parsed,nofparsed,one.mi) ---~ elseif trace_lprofile then ---~ return profiled_apply(list,parsed,nofparsed,one.mi) ---~ else ---~ return traced_apply(list,parsed,nofparsed,one.mi) ---~ end ---~ end - local function applylpath(list,pattern) if not list then return @@ -1163,7 +1134,6 @@ expressions.print = function(...) return true end -expressions.contains = find expressions.find = find expressions.upper = upper expressions.lower = lower @@ -1187,6 +1157,10 @@ function expressions.contains(str,pattern) return false end +function xml.expressions.idstring(str) + return type(str) == "string" and gsub(str,"^#","") or "" +end + -- user interface local function traverse(root,pattern,handle) @@ -1384,8 +1358,13 @@ function xml.elements(root,pattern,reverse) -- r, d, k local collected = applylpath(root,pattern) if not collected then return dummy - elseif reverse then - local c = #collected + 1 + end + local n = #collected + if n == 0 then + return dummy + end + if reverse then + local c = n + 1 return function() if c > 1 then c = c - 1 @@ -1395,7 +1374,7 @@ function xml.elements(root,pattern,reverse) -- r, d, k end end else - local n, c = #collected, 0 + local c = 0 return function() if c < n then c = c + 1 @@ -1411,8 +1390,13 @@ function xml.collected(root,pattern,reverse) -- e local collected = applylpath(root,pattern) if not collected then return dummy - elseif reverse then - local c = #collected + 1 + end + local n = #collected + if n == 0 then + return dummy + end + if reverse then + local c = n + 1 return function() if c > 1 then c = c - 1 @@ -1420,7 +1404,7 @@ function xml.collected(root,pattern,reverse) -- e end end else - local n, c = #collected, 0 + local c = 0 return function() if c < n then c = c + 1 @@ -1441,7 +1425,7 @@ end -- texy (see xfdf): -local function split(e) +local function split(e) -- todo: use helpers / lpeg local dt = e.dt if dt then for i=1,#dt do |