75 lines
1.6 KiB
Lua
75 lines
1.6 KiB
Lua
xact = function(n, f) -- just simple action!
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local v = {};
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if type(n) ~= 'string' or (type(f) ~= 'string' and not isCode(f)) then
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error ("Wrong parameter to xact.", 2)
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end
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v.nam = n
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v.act = f;
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v = obj(v);
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v.save = function(self, name, h, need)
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if need then
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local f = self.xact;
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if isCode(f) then
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f = stead.string.format("code %q", stead.functions[f].code);
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else
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f = stead.string.format("%q", f);
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end
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h:write(stead.string.format("%s = xact(%q, %s);\n", name, self.nam, f))
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end
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savemembers(h, self, name, false);
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end
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return v
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end
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__do_xact = function(str)
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local aarg = {}
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local function parg(v)
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stead.table.insert(aarg, v);
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return ''
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end
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local xrefrep = function(str)
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local s = stead.string.gsub(str,'[{}]','');
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local o,d, a;
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local i = s:find(":", 1, true);
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aarg = {}
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if i then
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o = s:sub(1, i - 1);
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d = s:sub(i + 1);
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i = o:find("(", 1, true);
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if i then
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a = o:sub(i);
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o = o:sub(1, i - 1);
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a:gsub('[^,()]+', parg);
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end
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if o == '' then
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error("Empty link: "..s, 3);
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end
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else
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error("Wrong link: "..s, 3);
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end
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local oo = objs():srch(o)
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if not oo then
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oo = ref(o)
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end
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return xref(d, ref(oo), unpack(aarg));
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end
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if type(str) ~= 'string' then return end
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local s = stead.string.gsub(str,'{[^}]+}', xrefrep);
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return s;
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end
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stead.fmt = stead.hook(stead.fmt, function(f, ...)
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local r = f(unpack(arg))
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if type(r) == 'string' and stead.state then
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r = __do_xact(r);
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end
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return r;
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end)
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xobj = stead.inherit(obj, function(v)
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v.xref = function(s, str)
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return str
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end
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return v
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end)
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