1 files changed, 577 insertions, 0 deletions
diff --git a/tolua++-1.0.93/src/bin/lua/function.lua b/tolua++-1.0.93/src/bin/lua/function.lua
new file mode 100644
index 000000000..2358e9ff7
--- /dev/null
+++ b/tolua++-1.0.93/src/bin/lua/function.lua
@@ -0,0 +1,577 @@
+-- tolua: function class
+-- Written by Waldemar Celes
+-- TeCGraf/PUC-Rio
+-- Jul 1998
+-- $Id: $
+
+-- This code is free software; you can redistribute it and/or modify it.
+-- The software provided hereunder is on an "as is" basis, and
+-- the author has no obligation to provide maintenance, support, updates,
+-- enhancements, or modifications.
+
+
+
+-- Function class
+-- Represents a function or a class method.
+-- The following fields are stored:
+--  mod  = type modifiers
+--  type = type
+--  ptr  = "*" or "&", if representing a pointer or a reference
+--  name = name
+--  lname = lua name
+--  args  = list of argument declarations
+--  const = if it is a method receiving a const "this".
+classFunction = {
+ mod = '',
+ type = '',
+ ptr = '',
+ name = '',
+ args = {n=0},
+ const = '',
+}
+classFunction.__index = classFunction
+setmetatable(classFunction,classFeature)
+
+-- declare tags
+function classFunction:decltype ()
+ self.type = typevar(self.type)
+ if strfind(self.mod,'const') then
+	 self.type = 'const '..self.type
+		self.mod = gsub(self.mod,'const','')
+	end
+ local i=1
+ while self.args[i] do
+  self.args[i]:decltype()
+  i = i+1
+ end
+end
+
+
+-- Write binding function
+-- Outputs C/C++ binding function.
+function classFunction:supcode (local_constructor)
+
+ local overload = strsub(self.cname,-2,-1) - 1  -- indicate overloaded func
+ local nret = 0      -- number of returned values
+ local class = self:inclass()
+ local _,_,static = strfind(self.mod,'^%s*(static)')
+ if class then
+
+ 	if self.name == 'new' and self.parent.flags.pure_virtual then
+ 		-- no constructor for classes with pure virtual methods
+ 		return
+ 	end
+
+ 	if local_constructor then
+		output("/* method: new_local of class ",class," */")
+	else
+		output("/* method:",self.name," of class ",class," */")
+	end
+ else
+  output("/* function:",self.name," */")
+ end
+
+ if local_constructor then
+  output("#ifndef TOLUA_DISABLE_"..self.cname.."_local")
+  output("\nstatic int",self.cname.."_local","(lua_State* tolua_S)")
+ else
+  output("#ifndef TOLUA_DISABLE_"..self.cname)
+  output("\nstatic int",self.cname,"(lua_State* tolua_S)")
+ end
+ output("{")
+
+ -- check types
+	if overload < 0 then
+	 output('#ifndef TOLUA_RELEASE\n')
+	end
+	output(' tolua_Error tolua_err;')
+ output(' if (\n')
+ -- check self
+ local narg
+ if class then narg=2 else narg=1 end
+ if class then
+		local func = get_is_function(self.parent.type)
+		local type = self.parent.type
+		if self.name=='new' or static~=nil then
+			func = 'tolua_isusertable'
+			type = self.parent.type
+		end
+		if self.const ~= '' then
+			type = "const "..type
+		end
+		output('     !'..func..'(tolua_S,1,"'..type..'",0,&tolua_err) ||\n')
+ end
+ -- check args
+ if self.args[1].type ~= 'void' then
+  local i=1
+  while self.args[i] do
+   local btype = isbasic(self.args[i].type)
+   if btype ~= 'value' and btype ~= 'state' then
+    output('     '..self.args[i]:outchecktype(narg)..' ||\n')
+   end
+   if btype ~= 'state' then
+	   narg = narg+1
+   end
+   i = i+1
+  end
+ end
+ -- check end of list
+ output('     !tolua_isnoobj(tolua_S,'..narg..',&tolua_err)\n )')
+	output('  goto tolua_lerror;')
+
+ output(' else\n')
+	if overload < 0 then
+	 output('#endif\n')
+	end
+	output(' {')
+
+ -- declare self, if the case
+ local narg
+ if class then narg=2 else narg=1 end
+ if class and self.name~='new' and static==nil then
+  output(' ',self.const,self.parent.type,'*','self = ')
+  output('(',self.const,self.parent.type,'*) ')
+  local to_func = get_to_function(self.parent.type)
+  output(to_func,'(tolua_S,1,0);')
+ elseif static then
+  _,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
+ end
+ -- declare parameters
+ if self.args[1].type ~= 'void' then
+  local i=1
+  while self.args[i] do
+   self.args[i]:declare(narg)
+   if isbasic(self.args[i].type) ~= "state" then
+	   narg = narg+1
+   end
+   i = i+1
+  end
+ end
+
+ -- check self
+ if class and self.name~='new' and static==nil then
+	 output('#ifndef TOLUA_RELEASE\n')
+	 output('  if (!self) tolua_error(tolua_S,"'..output_error_hook("invalid \'self\' in function \'%s\'", self.name)..'", NULL);');
+	 output('#endif\n')
+ end
+
+ -- get array element values
+ if class then narg=2 else narg=1 end
+ if self.args[1].type ~= 'void' then
+  local i=1
+  while self.args[i] do
+   self.args[i]:getarray(narg)
+   narg = narg+1
+   i = i+1
+  end
+ end
+
+ pre_call_hook(self)
+
+ local out = string.find(self.mod, "tolua_outside")
+ -- call function
+ if class and self.name=='delete' then
+  output('  Mtolua_delete(self);')
+ elseif class and self.name == 'operator&[]' then
+  if flags['1'] then -- for compatibility with tolua5 ?
+	output('  self->operator[](',self.args[1].name,'-1) = ',self.args[2].name,';')
+  else
+    output('  self->operator[](',self.args[1].name,') = ',self.args[2].name,';')
+  end
+ else
+  output('  {')
+  if self.type ~= '' and self.type ~= 'void' then
+   output('  ',self.mod,self.type,self.ptr,'tolua_ret = ')
+   output('(',self.mod,self.type,self.ptr,') ')
+  else
+   output('  ')
+  end
+  if class and self.name=='new' then
+   output('Mtolua_new((',self.type,')(')
+  elseif class and static then
+	if out then
+		output(self.name,'(')
+	else
+		output(class..'::'..self.name,'(')
+	end
+  elseif class then
+	if out then
+		output(self.name,'(')
+	else
+	  if self.cast_operator then
+	  	--output('static_cast<',self.mod,self.type,self.ptr,' >(*self')
+		output('self->operator ',self.mod,self.type,'(')
+	  else
+		output('self->'..self.name,'(')
+	  end
+	end
+  else
+   output(self.name,'(')
+  end
+
+  if out and not static then
+  	output('self')
+	if self.args[1] and self.args[1].name ~= '' then
+		output(',')
+	end
+  end
+  -- write parameters
+  local i=1
+  while self.args[i] do
+   self.args[i]:passpar()
+   i = i+1
+   if self.args[i] then
+    output(',')
+   end
+  end
+
+  if class and self.name == 'operator[]' and flags['1'] then
+	output('-1);')
+  else
+	if class and self.name=='new' then
+		output('));') -- close Mtolua_new(
+	else
+		output(');')
+	end
+  end
+
+  -- return values
+  if self.type ~= '' and self.type ~= 'void' then
+   nret = nret + 1
+   local t,ct = isbasic(self.type)
+   if t and self.name ~= "new" then
+   	if self.cast_operator and _basic_raw_push[t] then
+		output('   ',_basic_raw_push[t],'(tolua_S,(',ct,')tolua_ret);')
+   	else
+	    output('   tolua_push'..t..'(tolua_S,(',ct,')tolua_ret);')
+	end
+   else
+	t = self.type
+	new_t = string.gsub(t, "const%s+", "")
+	local owned = false
+	if string.find(self.mod, "tolua_owned") then
+		owned = true
+	end
+    local push_func = get_push_function(t)
+    if self.ptr == '' then
+     output('   {')
+     output('#ifdef __cplusplus\n')
+     output('    void* tolua_obj = Mtolua_new((',new_t,')(tolua_ret));')
+     output('    ',push_func,'(tolua_S,tolua_obj,"',t,'");')
+     output('    tolua_register_gc(tolua_S,lua_gettop(tolua_S));')
+     output('#else\n')
+     output('    void* tolua_obj = tolua_copy(tolua_S,(void*)&tolua_ret,sizeof(',t,'));')
+     output('    ',push_func,'(tolua_S,tolua_obj,"',t,'");')
+     output('    tolua_register_gc(tolua_S,lua_gettop(tolua_S));')
+     output('#endif\n')
+     output('   }')
+    elseif self.ptr == '&' then
+     output('   ',push_func,'(tolua_S,(void*)&tolua_ret,"',t,'");')
+    else
+	 output('   ',push_func,'(tolua_S,(void*)tolua_ret,"',t,'");')
+	 if owned or local_constructor then
+      output('    tolua_register_gc(tolua_S,lua_gettop(tolua_S));')
+	 end
+    end
+   end
+  end
+  local i=1
+  while self.args[i] do
+   nret = nret + self.args[i]:retvalue()
+   i = i+1
+  end
+  output('  }')
+
+  -- set array element values
+  if class then narg=2 else narg=1 end
+  if self.args[1].type ~= 'void' then
+   local i=1
+   while self.args[i] do
+    self.args[i]:setarray(narg)
+    narg = narg+1
+    i = i+1
+   end
+  end
+
+  -- free dynamically allocated array
+  if self.args[1].type ~= 'void' then
+   local i=1
+   while self.args[i] do
+    self.args[i]:freearray()
+    i = i+1
+   end
+  end
+ end
+
+ post_call_hook(self)
+
+ output(' }')
+ output(' return '..nret..';')
+
+ -- call overloaded function or generate error
+	if overload < 0 then
+
+		output('#ifndef TOLUA_RELEASE\n')
+		output('tolua_lerror:\n')
+		output(' tolua_error(tolua_S,"'..output_error_hook("#ferror in function \'%s\'.", self.lname)..'",&tolua_err);')
+		output(' return 0;')
+		output('#endif\n')
+	else
+		local _local = ""
+		if local_constructor then
+			_local = "_local"
+		end
+		output('tolua_lerror:\n')
+		output(' return '..strsub(self.cname,1,-3)..format("%02d",overload).._local..'(tolua_S);')
+	end
+ output('}')
+ output('#endif //#ifndef TOLUA_DISABLE\n')
+ output('\n')
+
+	-- recursive call to write local constructor
+	if class and self.name=='new' and not local_constructor then
+
+		self:supcode(1)
+	end
+
+end
+
+
+-- register function
+function classFunction:register (pre)
+
+	if not self:check_public_access() then
+		return
+	end
+
+ 	if self.name == 'new' and self.parent.flags.pure_virtual then
+ 		-- no constructor for classes with pure virtual methods
+ 		return
+ 	end
+
+ output(pre..'tolua_function(tolua_S,"'..self.lname..'",'..self.cname..');')
+  if self.name == 'new' then
+	  output(pre..'tolua_function(tolua_S,"new_local",'..self.cname..'_local);')
+	  output(pre..'tolua_function(tolua_S,".call",'..self.cname..'_local);')
+	  --output(' tolua_set_call_event(tolua_S,'..self.cname..'_local, "'..self.parent.type..'");')
+  end
+end
+
+-- Print method
+function classFunction:print (ident,close)
+ print(ident.."Function{")
+ print(ident.." mod  = '"..self.mod.."',")
+ print(ident.." type = '"..self.type.."',")
+ print(ident.." ptr  = '"..self.ptr.."',")
+ print(ident.." name = '"..self.name.."',")
+ print(ident.." lname = '"..self.lname.."',")
+ print(ident.." const = '"..self.const.."',")
+ print(ident.." cname = '"..self.cname.."',")
+ print(ident.." lname = '"..self.lname.."',")
+ print(ident.." args = {")
+ local i=1
+ while self.args[i] do
+  self.args[i]:print(ident.."  ",",")
+  i = i+1
+ end
+ print(ident.." }")
+ print(ident.."}"..close)
+end
+
+-- check if it returns an object by value
+function classFunction:requirecollection (t)
+	local r = false
+	if self.type ~= '' and not isbasic(self.type) and self.ptr=='' then
+		local type = gsub(self.type,"%s*const%s+","")
+	 t[type] = "tolua_collect_" .. clean_template(type)
+	 r = true
+	end
+	local i=1
+	while self.args[i] do
+		r = self.args[i]:requirecollection(t) or r
+		i = i+1
+	end
+	return r
+end
+
+-- determine lua function name overload
+function classFunction:overload ()
+ return self.parent:overload(self.lname)
+end
+
+
+function param_object(par) -- returns true if the parameter has an object as its default value
+
+	if not string.find(par, '=') then return false end -- it has no default value
+
+	local _,_,def = string.find(par, "=(.*)$")
+
+	if string.find(par, "|") then -- a list of flags
+
+		return true
+	end
+
+	if string.find(par, "%*") then -- it's a pointer with a default value
+
+		if string.find(par, '=%s*new') or string.find(par, "%(") then -- it's a pointer with an instance as default parameter.. is that valid?
+			return true
+		end
+		return false -- default value is 'NULL' or something
+	end
+
+
+	if string.find(par, "[%(&]") then
+		return true
+	end -- default value is a constructor call (most likely for a const reference)
+
+	--if string.find(par, "&") then
+
+	--	if string.find(def, ":") or string.find(def, "^%s*new%s+") then
+
+	--		-- it's a reference with default to something like Class::member, or 'new Class'
+	--		return true
+	--	end
+	--end
+
+	return false -- ?
+end
+
+function strip_last_arg(all_args, last_arg) -- strips the default value from the last argument
+
+	local _,_,s_arg = string.find(last_arg, "^([^=]+)")
+	last_arg = string.gsub(last_arg, "([%%%(%)])", "%%%1");
+	all_args = string.gsub(all_args, "%s*,%s*"..last_arg.."%s*%)%s*$", ")")
+	return all_args, s_arg
+end
+
+
+
+-- Internal constructor
+function _Function (t)
+ setmetatable(t,classFunction)
+
+ if t.const ~= 'const' and t.const ~= '' then
+  error("#invalid 'const' specification")
+ end
+
+ append(t)
+ if t:inclass() then
+ --print ('t.name is '..t.name..', parent.name is '..t.parent.name)
+  if string.gsub(t.name, "%b<>", "") == string.gsub(t.parent.original_name or t.parent.name, "%b<>", "") then
+   t.name = 'new'
+   t.lname = 'new'
+   t.parent._new = true
+   t.type = t.parent.name
+   t.ptr = '*'
+  elseif string.gsub(t.name, "%b<>", "") == '~'..string.gsub(t.parent.original_name or t.parent.name, "%b<>", "") then
+   t.name = 'delete'
+   t.lname = 'delete'
+   t.parent._delete = true
+  end
+ end
+ t.cname = t:cfuncname("tolua")..t:overload(t)
+ return t
+end
+
+-- Constructor
+-- Expects three strings: one representing the function declaration,
+-- another representing the argument list, and the third representing
+-- the "const" or empty string.
+function Function (d,a,c)
+ --local t = split(strsub(a,2,-2),',') -- eliminate braces
+ --local t = split_params(strsub(a,2,-2))
+
+	if not flags['W'] and string.find(a, "%.%.%.%s*%)") then
+
+		warning("Functions with variable arguments (`...') are not supported. Ignoring "..d..a..c)
+		return nil
+	end
+
+
+ local i=1
+ local l = {n=0}
+
+ 	a = string.gsub(a, "%s*([%(%)])%s*", "%1")
+	local t,strip,last = strip_pars(strsub(a,2,-2));
+	if strip then
+		--local ns = string.sub(strsub(a,1,-2), 1, -(string.len(last)+1))
+		local ns = join(t, ",", 1, last-1)
+
+		ns = "("..string.gsub(ns, "%s*,%s*$", "")..')'
+		--ns = strip_defaults(ns)
+
+		local f = Function(d, ns, c)
+		for i=1,last do
+			t[i] = string.gsub(t[i], "=.*$", "")
+		end
+	end
+
+ while t[i] do
+  l.n = l.n+1
+  l[l.n] = Declaration(t[i],'var',true)
+  i = i+1
+ end
+ local f = Declaration(d,'func')
+ f.args = l
+ f.const = c
+ return _Function(f)
+end
+
+function join(t, sep, first, last)
+
+	first = first or 1
+	last = last or table.getn(t)
+	local lsep = ""
+	local ret = ""
+	local loop = false
+	for i = first,last do
+
+		ret = ret..lsep..t[i]
+		lsep = sep
+		loop = true
+	end
+	if not loop then
+		return ""
+	end
+
+	return ret
+end
+
+function strip_pars(s)
+
+	local t = split_c_tokens(s, ',')
+	local strip = false
+	local last
+
+	for i=t.n,1,-1 do
+
+		if not strip and param_object(t[i]) then
+			last = i
+			strip = true
+		end
+		--if strip then
+		--	t[i] = string.gsub(t[i], "=.*$", "")
+		--end
+	end
+
+	return t,strip,last
+
+end
+
+function strip_defaults(s)
+
+	s = string.gsub(s, "^%(", "")
+	s = string.gsub(s, "%)$", "")
+
+	local t = split_c_tokens(s, ",")
+	local sep, ret = "",""
+	for i=1,t.n do
+		t[i] = string.gsub(t[i], "=.*$", "")
+		ret = ret..sep..t[i]
+		sep = ","
+	end
+
+	return "("..ret..")"
+end
+
+