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elua: basic type conversion support in lualian

This commit is contained in:
Daniel Kolesa 2014-04-17 14:14:04 +01:00 committed by Daniel Kolesa
parent 5b29cc38e1
commit 097f02bcc7
1 changed files with 77 additions and 10 deletions
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87
src/bin/elua/modules/lualian.lua
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@ -26,6 +26,71 @@ local strip_name = function(self, cn, cp)
return nm or cp
end
-- char not included - manual disambiguation needed
local isnum = {
["short" ] = true, ["int" ] = true, ["long" ] = true,
["size_t" ] = true, ["ptrdiff_t"] = true, ["int8_t" ] = true,
["int16_t" ] = true, ["int32_t" ] = true, ["int64_t" ] = true,
["uint8_t" ] = true, ["uint16_t" ] = true, ["uint32_t" ] = true,
["uint64_t"] = true, ["intptr_t" ] = true, ["uintptr_t" ] = true,
["float" ] = true, ["double" ] = true, ["long double"] = true
}
local known_out = {
["Eina_Bool"] = function(expr) return ("((%s) ~= 0)"):format(expr) end
}
local known_in = {
["Eina_Bool"] = function(expr) return expr end
}
local typeconv_in = function(tp, expr, isconst, isptr)
if isptr then
error("invalid type (pointer) [in]: " .. tp)
end
if isnum[tp] then
return expr
end
local f = known_in[tp]
if f then
return f(expr)
end
error("invalid type [in]: " .. tp)
end
local typeconv = function(tp, expr, isin)
-- strip type qualifiers
local isconst, tpr = (tp:match("^(const)[ ]+(.+)$"))
isconst = not not isconst
if tpr then tp = tpr end
-- check if it's a pointer
local basetype = (tp:match("(.+)[ ]+%*$"))
-- out val
if isin then return typeconv_in(tp, expr, isconst, basetype) end
-- pointer type
if basetype then
error("invalid type (pointer): " .. tp)
end
-- number?
if isnum[tp] then
return ("tonumber(%s)"):format(expr)
end
-- known primitive EFL type?
local f = known_out[tp]
if f then
return f(expr)
end
error("invalid type: " .. tp)
end
local Node = util.Object:clone {
generate = function(self, s)
end,
@ -74,14 +139,14 @@ local Method = Node:clone {
args[#args + 1] = nm
end
cargs [#cargs + 1] = tp .. " *" .. nm
vargs [#vargs + 1] = nm
vargs [#vargs + 1] = typeconv(tp, nm, true)
allocs[#allocs + 1] = { tp, nm, (dir == dirs.INOUT)
and nm or nil }
rets [#rets + 1] = nm .. "[0]"
rets [#rets + 1] = typeconv(tp, nm .. "[0]", false)
else
args [#args + 1] = nm
cargs [#cargs + 1] = tp .. " " .. nm
vargs [#vargs + 1] = nm
vargs [#vargs + 1] = typeconv(tp, nm, true)
end
end
end
@ -170,14 +235,15 @@ local Property = Method:clone {
if dir == dirs.OUT or dir == dirs.INOUT then
if dir == dirs.INOUT then kprop = true end
cargs [#cargs + 1] = tp .. " *" .. nm
vargs [#vargs + 1] = nm
vargs [#vargs + 1] = typeconv(tp, nm, true)
allocs[#allocs + 1] = { tp, nm, (dir == dirs.INOUT)
and (argn .. "[" .. i .. "]") or nil }
rets [#rets + 1] = nm .. "[0]"
rets [#rets + 1] = typeconv(tp, nm .. "[0]", false)
else
kprop = true
cargs [#cargs + 1] = tp .. " " .. nm
vargs [#vargs + 1] = argn .. "[" .. i .. "]"
vargs [#vargs + 1] = typeconv(tp, argn .. "[" .. i .. "]",
true)
end
end
if kprop then args[#args + 1] = argn end
@ -188,15 +254,15 @@ local Property = Method:clone {
if #vals > 0 then
if self.isget then
if #vals == 1 and not rett then
rets[#rets + 1] = "v"
proto.ret_type = vals[1]:type_get()
rets[#rets + 1] = typeconv(proto.ret_type, "v", false)
else
for i, v in ipairs(vals) do
local dir, tp, nm = v:information_get()
cargs [#cargs + 1] = tp .. " *" .. nm
vargs [#vargs + 1] = nm
vargs [#vargs + 1] = typeconv(tp, nm, true)
allocs[#allocs + 1] = { tp, nm }
rets [#rets + 1] = nm .. "[0]"
rets [#rets + 1] = typeconv(tp, nm .. "[0]", false)
end
end
else
@ -205,7 +271,8 @@ local Property = Method:clone {
for i, v in ipairs(vals) do
local dir, tp, nm = v:information_get()
cargs[#cargs + 1] = tp .. " " .. nm
vargs[#vargs + 1] = argn .. "[" .. i .. "]"
vargs[#vargs + 1] = typeconv(tp, argn .. "[" .. i .. "]",
true)
end
end
end