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comparison test/suite_aggrs/mk-cases.lua @ 432:167faab0c0be

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first usable version of test suite for aggregates, handling only non-nested struct params, at the moment; still missing: - unions - arrays - aggregates as return values
author Tassilo Philipp
date Fri, 21 Jan 2022 15:42:29 +0100
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children 45662241d9cd
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431:1cb8a65ea27f 432:167faab0c0be
1 require"math"
2 local max = math.max
3 local maxargs = 0
4
5 local n_aggrs = 0
6 local seen_aggrs = { }
7
8
9 function trim(l) return l:gsub("^%s+",""):gsub("%s+$","") end
10 function mkcase(id,sig)
11 local sig = trim(sig)
12 -- @@@ return value hard-guessed by first char, doesn't hold anymore
13 local h = { "/* ",id,":",sig," */ ",sig:sub(1,1), " f", id,"(","" }
14 local t = { "" }
15 local pos = 1
16 local n_nest = 0
17 local aggr
18 local aggr_sig = ''
19 for i = 2, #sig do
20 local name = "a"..pos
21 local ch = sig:sub(i,i)
22
23 aggr_sig = aggr_sig..ch
24
25 -- aggregate nest level change?
26 if ch == '{' then
27 n_nest = n_nest + 1
28 aggr = { }
29 aggr_sig = ch -- @@@ handle nesting
30 else
31 if ch == '}' then -- @@@ handle nesting, here, by reusing structs
32 n_nest = n_nest - 1
33 -- aggr sig complete?
34 if n_nest == 0 then
35 -- register yet unseen aggregates, key is sig, val is body and name
36 if seen_aggrs[aggr_sig] == nil then
37 n_aggrs = n_aggrs + 1
38 ch = 'A'..n_aggrs
39 seen_aggrs[aggr_sig] = { aggr, ch }
40 end
41 ch = seen_aggrs[aggr_sig][2]
42 end
43 else
44 if n_nest > 0 then
45 aggr[#aggr+1] = ch
46 aggr[#aggr+1] = 'm'..(#aggr >> 1)
47 end
48 end
49 end
50
51 if n_nest == 0 then
52 -- struct types (more than one char) need copying via a func
53 if #ch > 1 then
54 h[#h+1] = 'struct '..ch.." "..name
55 t[#t+1] = 'f_cp'..ch..'(V_a['..pos.."],&"..name..");"
56 else
57 h[#h+1] = ch.." "..name
58 t[#t+1] = "V_"..ch.."["..pos.."]="..name..";"
59 end
60 h[#h+1] = ","
61
62 pos = pos + 1
63 end
64 end
65 maxargs = max(maxargs, pos-1)
66 h[#h] = "){"
67 t[#t+1] = "ret_"..sig:sub(1,1).."("..(pos-1)..")}\n"
68 return table.concat(h,"")..table.concat(t,"")
69 end
70
71 function mkfuntab(n)
72 local s = { "funptr G_funtab[] = {\n"}
73 for i = 0, n-1 do
74 s[#s+1] = "\t(funptr)&f"..i..",\n"
75 end
76 s[#s+1] = "};\n"
77 return table.concat(s,"")
78 end
79
80 function mksigtab(sigs)
81 local s = { "char const * G_sigtab[] = {\n"}
82 for k,v in pairs(sigs) do
83 s[#s+1] = '\t"'..v..'",\n'
84 end
85 s[#s+1] = "};\n"
86 return table.concat(s,"")
87 end
88
89 function mkall()
90 local lineno = 0
91 local sigtab = { }
92 local cases = ''
93 for line in io.lines() do
94 local sig = trim(line)
95 cases = cases..mkcase(lineno,sig)
96 sigtab[#sigtab+1] = sig
97 lineno = lineno + 1
98 end
99
100 agg_sizes = {}
101 agg_sigs = {}
102 agg_names = {}
103 for k, v in pairs(seen_aggrs) do
104 st = 'struct '..v[2]
105
106 agg_sizes[#agg_sizes + 1] = 'sizeof('..st..')'
107 agg_sigs [#agg_sigs + 1] = k
108 agg_names[#agg_names + 1] = v[2]
109
110 -- struct def
111 io.write('/* '..k..' */\n')
112 io.write(st..'{ ')
113 for i = 1, #v[1], 2 do
114 io.write(v[1][i]..' '..v[1][i+1]..'; ')
115 end
116 io.write("};\n")
117
118 -- struct cp and cmp funcs
119 s = {
120 'void f_cp'..v[2]..'('..st..' *x, const '..st..' *y) { ',
121 'int f_cmp'..v[2]..'(const '..st..' *x, const '..st..' *y) { return '
122 }
123 o = { '=', '==', '; ', ' && ' }
124 for t = 1, 2 do
125 io.write(s[t])
126 b = {}
127 for i = 1, #v[1], 2 do
128 b[#b+1] = 'x->'..v[1][i+1]..' '..o[t]..' y->'..v[1][i+1];
129 end
130 if #b == 0 then
131 b[1] = '1' -- to handle empty structs
132 end
133 io.write(table.concat(b,o[t+2]).."; };\n")
134 end
135
136 -- convenient dcnewstruct helper funcs
137 io.write('DCstruct* f_newdcst'..v[2]..'() { DCstruct* st = dcNewStruct('..(#v[1]>>1)..', sizeof('..st..'), 0, 1); ')
138 for i = 1, #v[1], 2 do
139 io.write("dcStructField(st, '"..v[1][i].."', offsetof("..st..', '..v[1][i+1]..'), 1); ')
140 end
141 io.write(" dcCloseStruct(st); return st; };\n")
142 end
143
144 io.write(cases)
145 io.write(mkfuntab(lineno))
146 io.write(mksigtab(sigtab))
147 io.write('const char* G_agg_sigs[] = {\n\t"'..table.concat(agg_sigs, '",\n\t"')..'"\n};\n')
148 io.write('int G_agg_sizes[] = {\n\t'..table.concat(agg_sizes, ',\n\t')..'\n};\n')
149 io.write('funptr G_agg_newdcstfuncs[] = {\n\t(funptr)&f_newdcst'..table.concat(agg_names, ',\n\t(funptr)&f_newdcst')..'\n};\n')
150 io.write('funptr G_agg_cmpfuncs[] = {\n\t(funptr)&f_cmp'..table.concat(agg_names, ',\n\t(funptr)&f_cmp')..'\n};\n')
151 io.write("int G_maxargs = "..maxargs..";\n")
152 end
153
154 mkall()
155