Mercurial > pub > dyncall > dyncall
view test/suite_aggrs/mk-cases.lua @ 433:45662241d9cd
suite_aggrs now handling struct by value return types, also
still missing: nesting, unions, arrays
note: this doesn't compile against this same checked in revision of dyncall, but only my working copy; a future checkin will catch up
author | Tassilo Philipp |
---|---|
date | Sat, 22 Jan 2022 16:07:57 +0100 |
parents | 167faab0c0be |
children | 3d2c5d156d78 |
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require"math" local max = math.max local maxargs = 0 local n_aggrs = 0 local seen_aggrs = { } function trim(l) return l:gsub("^%s+",""):gsub("%s+$","") end function mkcase(id,sig) local sig = trim(sig) local h = { "/* ",id,":",sig," */ " } local t = { "" } local pos = 0 local n_nest = 0 local aggr local aggr_sig = '' for i = 1, #sig do local name = "a"..pos local ch = sig:sub(i,i) aggr_sig = aggr_sig..ch -- aggregate nest level change? if ch == '{' then n_nest = n_nest + 1 aggr = { } aggr_sig = ch -- @@@ handle nesting else if ch == '}' then -- @@@ handle nesting, here, by reusing structs n_nest = n_nest - 1 -- aggr sig complete? if n_nest == 0 then -- register yet unseen aggregates, key is sig, val is body and name if seen_aggrs[aggr_sig] == nil then n_aggrs = n_aggrs + 1 ch = 'A'..n_aggrs seen_aggrs[aggr_sig] = { aggr, ch } end ch = seen_aggrs[aggr_sig][2] end else if n_nest > 0 then aggr[#aggr+1] = ch aggr[#aggr+1] = 'm'..(#aggr >> 1) end end end if n_nest == 0 then -- struct types (more than one char) need copying via a func if #ch > 1 then h[#h+1] = 'struct '..ch t[#t+1] = 'f_cp'..ch..'(V_a['..pos.."],&"..name..");" else h[#h+1] = ch t[#t+1] = "V_"..ch.."["..pos.."]="..name..";" end -- is return type or func arg? if pos == 0 then h[#h+1] = " f"..id.."(" h[#h+1] = '' t[#t] = '' -- clear; aggr return type handled explicitly else h[#h+1] = ' '..name h[#h+1] = "," end pos = pos + 1 end end maxargs = max(maxargs, pos-1) h[#h] = "){" if #h[6] == 1 then t[#t+1] = "ret_"..h[6].."("..(pos-1)..")}\n" else t[#t+1] = "ret_a("..(pos-1)..","..h[6]..")}\n" end return table.concat(h,"")..table.concat(t,"") end function mkfuntab(n) local s = { "funptr G_funtab[] = {\n"} for i = 0, n-1 do s[#s+1] = "\t(funptr)&f"..i..",\n" end s[#s+1] = "};\n" return table.concat(s,"") end function mksigtab(sigs) local s = { "char const * G_sigtab[] = {\n"} for k,v in pairs(sigs) do s[#s+1] = '\t"'..v..'",\n' end s[#s+1] = "};\n" return table.concat(s,"") end function mkall() local lineno = 0 local sigtab = { } local cases = '' for line in io.lines() do local sig = trim(line) cases = cases..mkcase(lineno,sig) sigtab[#sigtab+1] = sig lineno = lineno + 1 end agg_sizes = {} agg_sigs = {} agg_names = {} for k, v in pairs(seen_aggrs) do st = 'struct '..v[2] agg_sizes[#agg_sizes + 1] = 'sizeof('..st..')' agg_sigs [#agg_sigs + 1] = k agg_names[#agg_names + 1] = v[2] -- struct def io.write('/* '..k..' */\n') io.write(st..'{ ') for i = 1, #v[1], 2 do io.write(v[1][i]..' '..v[1][i+1]..'; ') end io.write("};\n") -- struct cp and cmp funcs s = { 'void f_cp'..v[2]..'('..st..' *x, const '..st..' *y) { ', 'int f_cmp'..v[2]..'(const '..st..' *x, const '..st..' *y) { return ' } o = { '=', '==', '; ', ' && ' } for t = 1, 2 do io.write(s[t]) b = {} for i = 1, #v[1], 2 do b[#b+1] = 'x->'..v[1][i+1]..' '..o[t]..' y->'..v[1][i+1]; end if #b == 0 then b[1] = '1' -- to handle empty structs end io.write(table.concat(b,o[t+2]).."; };\n") end -- convenient dcnewstruct helper funcs io.write('DCstruct* f_newdcst'..v[2]..'() { DCstruct* st = dcNewStruct('..(#v[1]>>1)..', sizeof('..st..'), 0, 1); ') for i = 1, #v[1], 2 do io.write("dcStructField(st, '"..v[1][i].."', offsetof("..st..', '..v[1][i+1]..'), 1); ') end io.write(" dcCloseStruct(st); return st; };\n") end -- make table.concat work if #agg_names > 0 then table.insert(agg_names, 1, '') end io.write(cases) io.write(mkfuntab(lineno)) io.write(mksigtab(sigtab)) io.write('const char* G_agg_sigs[] = {\n\t"'..table.concat(agg_sigs, '",\n\t"')..'"\n};\n') io.write('int G_agg_sizes[] = {\n\t'..table.concat(agg_sizes, ',\n\t')..'\n};\n') io.write('funptr G_agg_newdcstfuncs[] = {'..string.sub(table.concat(agg_names, ',\n\t(funptr)&f_newdcst'),2)..'\n};\n') io.write('funptr G_agg_cmpfuncs[] = {'..string.sub(table.concat(agg_names, ',\n\t(funptr)&f_cmp'),2)..'\n};\n') io.write("int G_maxargs = "..maxargs..";\n") end mkall()