diff options
Diffstat (limited to 'tex/context/base/mkiv/mlib-lua.lua')
| -rw-r--r-- | tex/context/base/mkiv/mlib-lua.lua | 446 |
1 files changed, 313 insertions, 133 deletions
diff --git a/tex/context/base/mkiv/mlib-lua.lua b/tex/context/base/mkiv/mlib-lua.lua index 80d893319..9e3802396 100644 --- a/tex/context/base/mkiv/mlib-lua.lua +++ b/tex/context/base/mkiv/mlib-lua.lua @@ -25,7 +25,6 @@ local report_script = logs.reporter("metapost","script") local report_message = logs.reporter("metapost") local trace_luarun = false trackers.register("metapost.lua",function(v) trace_luarun = v end) -local trace_enabled = true local be_tolerant = true directives.register("metapost.lua.tolerant", function(v) be_tolerant = v end) @@ -134,55 +133,15 @@ end do - local buffer = { } - local n = 0 - local max = 20 -- we reuse upto max - local nesting = 0 - local runs = 0 - - local function _f_() - if trace_enabled and trace_luarun then - local result = concat(buffer," ",1,n) - if n > max then - buffer = { } -- newtable(20,0) - end - n = 0 - report_luarun("%i: data: %s",nesting,result) - return result - else - if n == 0 then - return "" -- can be nil - end - local result - if n == 1 then - result = buffer[1] - else - result = concat(buffer," ",1,n) - end - if n > max then - buffer = { } -- newtable(20,0) - end - n = 0 - return result - end - end - - mp._f_ = _f_ -- convenient to have it in a top module - aux.flush = _f_ - - ----- f_code = formatters["%s return mp._f_()"] + -- serializers local f_integer = formatters["%i"] + local f_numeric = formatters["%F"] -- no %n as that can produce -e notation and that is not so nice for scaled butmaybe we -- should then switch between ... i.e. make a push/pop for the formatters here ... not now. - -- local f_numeric = formatters["%n"] -- maybe %N - -- local f_pair = formatters["(%n,%n)"] - -- local f_ctrl = formatters["(%n,%n) .. controls (%n,%n) and (%n,%n)"] - -- local f_triplet = formatters["(%n,%n,%n)"] - -- local f_quadruple = formatters["(%n,%n,%n,%n)"] - + local f_integer = formatters["%i"] local f_numeric = formatters["%F"] local f_pair = formatters["(%F,%F)"] local f_ctrl = formatters["(%F,%F) .. controls (%F,%F) and (%F,%F)"] @@ -206,6 +165,184 @@ do mp.cleaned = function(s) return lpegmatch(p,s) or s end + -- management + + -- sometimes we gain (e.g. .5 sec on the sync test) + + local cache = table.makeweak() + + local runscripts = { } + local runnames = { } + local nofscripts = 0 + + function metapost.registerscript(name,f) + nofscripts = nofscripts + 1 + if f then + runscripts[nofscripts] = f + runnames[name] = nofscripts + else + runscripts[nofscripts] = name + end + return nofscripts + end + + function metapost.scriptindex(name) + return runnames[name] or 0 + end + + -- The gbuffer sharing and such is not really needed now but make a dent when + -- we have a high volume of simpel calls (loops) so we keep it around for a + -- while. + + local nesting = 0 + local runs = 0 + local gbuffer = { } + local buffer = gbuffer + local n = 0 + + local function mpdirect1(a) + n = n + 1 buffer[n] = a + end + local function mpdirect2(a,b) + n = n + 1 buffer[n] = a + n = n + 1 buffer[n] = b + end + local function mpdirect3(a,b,c) + n = n + 1 buffer[n] = a + n = n + 1 buffer[n] = b + n = n + 1 buffer[n] = c + end + local function mpdirect4(a,b,c,d) + n = n + 1 buffer[n] = a + n = n + 1 buffer[n] = b + n = n + 1 buffer[n] = c + n = n + 1 buffer[n] = d + end + local function mpdirect5(a,b,c,d,e) + n = n + 1 buffer[n] = a + n = n + 1 buffer[n] = b + n = n + 1 buffer[n] = c + n = n + 1 buffer[n] = d + n = n + 1 buffer[n] = e + end + + local function mpflush(separator) + buffer[1] = concat(buffer,separator or "",1,n) + n = 1 + end + + function metapost.runscript(code) + nesting = nesting + 1 + runs = runs + 1 + + local index = type(code) == "number" + local f + local result + + if index then + f = runscripts[code] + if not f then + report_luarun("%i: bad index: %s",nesting,code) + elseif trace_luarun then + report_luarun("%i: index: %i",nesting,code) + end + else + if trace_luarun then + report_luarun("%i: code: %s",nesting,code) + end + f = cache[code] + if not f then + f = loadstring("return " .. code) + if f then + cache[code] = f + elseif be_tolerant then + f = loadstring(code) + if f then + cache[code] = f + end + end + end + end + + -- returning nil is more efficient and a signal not to scan in mp + + if f then + + local lbuffer, ln + + if nesting == 1 then + buffer = gbuffer + n = 0 + else + lbuffer = buffer + ln = n + buffer = { } + n = 0 + end + + result = f() + + if result then + local t = type(result) + if t == "number" then + result = f_numeric(result) + elseif t == "table" then + result = concat(result) -- no spaces here + else + result = tostring(result) + end + if trace_luarun then + report_luarun("%i: %s result: %s",nesting,t,result) + end + elseif n == 0 then + result = "" + if trace_luarun then + report_luarun("%i: no buffered result",nesting) + end + elseif n == 1 then + result = buffer[1] + if trace_luarun then + report_luarun("%i: 1 buffered result: %s",nesting,result) + end + else + -- the space is why we sometimes have collectors + if nesting == 1 then + result = concat(buffer," ",1,n) + if n > 500 or #result > 10000 then + gbuffer = { } -- newtable(20,0) + lbuffer = gbuffer + end + else + result = concat(buffer," ") + end + if trace_luarun then + report_luarun("%i: %i buffered results: %s",nesting,n,result) + end + end + + if nesting == 1 then + n = 0 + else + buffer = lbuffer + n = ln + end + + else + report_luarun("%i: no result, invalid code: %s",nesting,code) + result = "" + end + + nesting = nesting - 1 + + return result + end + + function metapost.nofscriptruns() + return runs + end + + -- writers + local function mpp(value) n = n + 1 local t = type(value) @@ -482,6 +619,13 @@ do end end + aux.direct = mpdirect1 + aux.direct1 = mpdirect1 + aux.direct2 = mpdirect2 + aux.direct3 = mpdirect3 + aux.direct4 = mpdirect4 + aux.flush = mpflush + aux.print = mpprint aux.vprint = mpvprint aux.boolean = mpboolean @@ -503,107 +647,74 @@ do aux.quoted = mpquoted aux.transform = mptransform - -- we need access to the variables - - function metapost.nofscriptruns() - return runs - end - - -- sometimes we gain (e.g. .5 sec on the sync test) - - local cache = table.makeweak() - - local runscripts = { } - local runnames = { } - local nofscripts = 0 - - function metapost.registerscript(name,f) - nofscripts = nofscripts + 1 - if f then - runscripts[nofscripts] = f - runnames[name] = nofscripts - else - runscripts[nofscripts] = name - end - return nofscripts - end - - function metapost.scriptindex(name) - return runnames[name] or 0 - end + -- for the moment - function metapost.runscript(code) - nesting = nesting + 1 - local index = type(code) == "number" - local trace = trace_enabled and trace_luarun - runs = runs + 1 - local f - if index then - f = runscripts[code] - if not f then - report_luarun("%i: bad index: %s",nesting,code) - elseif trace then - report_luarun("%i: index: %i",nesting,code) + local function mpdraw(lines,list) -- n * 4 + if list then + local c = #lines + for i=1,c do + local ci = lines[i] + local ni = #ci + n = n + 1 buffer[n] = i < c and "d(" or "D(" + for j=1,ni,2 do + local l = j + 1 + n = n + 1 buffer[n] = ci[j] + n = n + 1 buffer[n] = "," + n = n + 1 buffer[n] = ci[l] + n = n + 1 buffer[n] = l < ni and ")--(" or ");" + end end else - if trace then - report_luarun("%i: code: %s",nesting,code) - end - f = cache[code] - if not f then - f = loadstring(code .. " return mp._f_()") - if f then - cache[code] = f - elseif be_tolerant then - f = loadstring(code) - if f then - cache[code] = f - end - end + local l = #lines + local m = l - 4 + for i=1,l,4 do + n = n + 1 buffer[n] = i < m and "d(" or "D(" + n = n + 1 buffer[n] = lines[i] + n = n + 1 buffer[n] = "," + n = n + 1 buffer[n] = lines[i+1] + n = n + 1 buffer[n] = ")--(" + n = n + 1 buffer[n] = lines[i+2] + n = n + 1 buffer[n] = "," + n = n + 1 buffer[n] = lines[i+3] + n = n + 1 buffer[n] = ");" end end + end - -- returning nil is more efficient and a signel not to scan in mp - - if f then - local _buffer_ = buffer - local _n_ = n - buffer = { } - n = 0 - local result = f() - if index and not result then - result = _f_() - end - if result then - local t = type(result) - if t == "number" then - result = f_numeric(result) - elseif t ~= "string" then - result = tostring(result) + local function mpfill(lines,list) + if list then + local c = #lines + for i=1,c do + local ci = lines[i] + local ni = #ci + n = n + 1 buffer[n] = i < c and "f(" or "F(" + for j=1,ni,2 do + local l = j + 1 + n = n + 1 buffer[n] = ci[j] + n = n + 1 buffer[n] = "," + n = n + 1 buffer[n] = ci[l] + n = n + 1 buffer[n] = l < ni and ")--(" or ")--C;" end - if trace then - if #result == 0 then - report_luarun("%i: no result",nesting) - else - report_luarun("%i: result: %s",nesting,result) - end - end - buffer = _buffer_ - n = _n_ - nesting = nesting - 1 - return result - elseif trace then - report_luarun("%i: no result",nesting) end - buffer, n = _buffer_, _n_ else - report_luarun("%i: no result, invalid code: %s",nesting,code) + local l = #lines + local m = l - 4 + for i=1,l,4 do + n = n + 1 buffer[n] = i < m and "f(" or "F(" + n = n + 1 buffer[n] = lines[i] + n = n + 1 buffer[n] = "," + n = n + 1 buffer[n] = lines[i+1] + n = n + 1 buffer[n] = ")--(" + n = n + 1 buffer[n] = lines[i+2] + n = n + 1 buffer[n] = "," + n = n + 1 buffer[n] = lines[i+3] + n = n + 1 buffer[n] = ")--C;" + end end - nesting = nesting - 1 - return "" end - -- for the moment + aux.draw = mpdraw + aux.fill = mpfill for k, v in next, aux do mp[k] = v end @@ -1092,3 +1203,72 @@ do end end + +function mp.flatten(t) + local tn = #t + + local t1 = t[1] + local t2 = t[2] + local t3 = t[3] + local t4 = t[4] + + for i=1,tn-5,2 do + local t5 = t[i+4] + local t6 = t[i+5] + if t1 == t3 and t3 == t5 and ((t2 <= t4 and t4 <= t6) or (t6 <= t4 and t4 <= t2)) then + t[i+3] = t2 + t4 = t2 + t[i] = false + t[i+1] = false + elseif t2 == t4 and t4 == t6 and ((t1 <= t3 and t3 <= t5) or (t5 <= t3 and t3 <= t1)) then + t[i+2] = t1 + t3 = t1 + t[i] = false + t[i+1] = false + end + t1 = t3 + t2 = t4 + t3 = t5 + t4 = t6 + end + + -- remove duplicates + + local t1 = t[1] + local t2 = t[2] + for i=1,tn-2,2 do + local t3 = t[i+2] + local t4 = t[i+3] + if t1 == t3 and t2 == t4 then + t[i] = false + t[i+1] = false + end + t1 = t3 + t2 = t4 + end + + -- move coordinates + + local m = 0 + for i=1,tn,2 do + if t[i] then + m = m + 1 t[m] = t[i] + m = m + 1 t[m] = t[i+1] + end + end + + -- prune the table (not gc'd) + + for i=tn,m+1,-1 do + t[i] = nil + end + + -- safeguard so that we have at least one segment + + if m == 2 then + t[3] = t[1] + t[4] = t[2] + end + +end + |