From 998fb17fdc150bc9c6b3d8da0dd37dfd1ae7b39a Mon Sep 17 00:00:00 2001
From: Alexander Harkness <bearbin@gmail.com>
Date: Sun, 24 Nov 2013 14:29:35 +0000
Subject: Moved tolua++

---
 lib/tolua++/src/bin/lua/declaration.lua | 579 ++++++++++++++++++++++++++++++++
 1 file changed, 579 insertions(+)
 create mode 100644 lib/tolua++/src/bin/lua/declaration.lua

(limited to 'lib/tolua++/src/bin/lua/declaration.lua')

diff --git a/lib/tolua++/src/bin/lua/declaration.lua b/lib/tolua++/src/bin/lua/declaration.lua
new file mode 100644
index 000000000..73bbe910e
--- /dev/null
+++ b/lib/tolua++/src/bin/lua/declaration.lua
@@ -0,0 +1,579 @@
+-- tolua: declaration 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.
+
+
+-- Declaration class
+-- Represents variable, function, or argument declaration.
+-- Stores the following fields:
+--  mod  = type modifiers
+--  type = type
+--  ptr  = "*" or "&", if representing a pointer or a reference
+--  name = name
+--  dim  = dimension, if a vector
+--  def  = default value, if any (only for arguments)
+--  ret  = "*" or "&", if value is to be returned (only for arguments)
+classDeclaration = {
+ mod = '',
+ type = '',
+ ptr = '',
+ name = '',
+ dim = '',
+ ret = '',
+ def = ''
+}
+classDeclaration.__index = classDeclaration
+setmetatable(classDeclaration,classFeature)
+
+-- Create an unique variable name
+function create_varname ()
+ if not _varnumber then _varnumber = 0 end
+ _varnumber = _varnumber + 1
+ return "tolua_var_".._varnumber
+end
+
+-- Check declaration name
+-- It also identifies default values
+function classDeclaration:checkname ()
+
+ if strsub(self.name,1,1) == '[' and not findtype(self.type) then
+  self.name = self.type..self.name
+  local m = split(self.mod,'%s%s*')
+  self.type = m[m.n]
+  self.mod = concat(m,1,m.n-1)
+ end
+
+ local t = split(self.name,'=')
+ if t.n==2 then
+  self.name = t[1]
+  self.def = find_enum_var(t[t.n])
+ end
+
+ local b,e,d = strfind(self.name,"%[(.-)%]")
+ if b then
+  self.name = strsub(self.name,1,b-1)
+  self.dim = find_enum_var(d)
+ end
+
+
+ if self.type ~= '' and self.type ~= 'void' and self.name == '' then
+  self.name = create_varname()
+ elseif self.kind=='var' then
+  if self.type=='' and self.name~='' then
+   self.type = self.type..self.name
+   self.name = create_varname()
+  elseif findtype(self.name) then
+   if self.type=='' then self.type = self.name
+   else self.type = self.type..' '..self.name end
+   self.name = create_varname()
+  end
+ end
+
+ -- adjust type of string
+ if self.type == 'char' and self.dim ~= '' then
+	 self.type = 'char*'
+ end
+
+	if self.kind and self.kind == 'var' then
+		self.name = string.gsub(self.name, ":.*$", "") -- ???
+	end
+end
+
+-- Check declaration type
+-- Substitutes typedef's.
+function classDeclaration:checktype ()
+
+ -- check if there is a pointer to basic type
+ local basic = isbasic(self.type)
+ if self.kind == 'func' and basic=='number' and string.find(self.ptr, "%*") then
+ 	self.type = '_userdata'
+ 	self.ptr = ""
+ end
+ if basic and self.ptr~='' then
+  self.ret = self.ptr
+  self.ptr = nil
+  if isbasic(self.type) == 'number' then
+  	self.return_userdata = true
+  end
+ end
+
+ -- check if there is array to be returned
+ if self.dim~='' and self.ret~='' then
+   error('#invalid parameter: cannot return an array of values')
+ end
+ -- restore 'void*' and 'string*'
+ if self.type == '_userdata' then self.type = 'void*'
+ elseif self.type == '_cstring' then self.type = 'char*'
+ elseif self.type == '_lstate' then self.type = 'lua_State*'
+ end
+
+ -- resolve types inside the templates
+ if self.type then
+	 self.type = resolve_template_types(self.type)
+ end
+
+--
+-- -- if returning value, automatically set default value
+-- if self.ret ~= '' and self.def == '' then
+--  self.def = '0'
+-- end
+--
+
+end
+
+function resolve_template_types(type)
+
+	if isbasic(type) then
+		return type
+	end
+	local b,_,m = string.find(type, "(%b<>)")
+	if b then
+
+		m = split_c_tokens(string.sub(m, 2, -2), ",")
+		for i=1, table.getn(m) do
+			m[i] = string.gsub(m[i],"%s*([%*&])", "%1")
+			if not isbasic(m[i]) then
+				if not isenum(m[i]) then _, m[i] = applytypedef("", m[i]) end
+				m[i] = findtype(m[i]) or m[i]
+				m[i] = resolve_template_types(m[i])
+			end
+		end
+
+		local b,i
+		type,b,i = break_template(type)
+--print("concat is ",concat(m, 1, m.n))
+		local template_part = "<"..concat(m, 1, m.n, ",")..">"
+		type = rebuild_template(type, b, template_part)
+		type = string.gsub(type, ">>", "> >")
+	end
+	return type
+end
+
+function break_template(s)
+	local b,e,timpl = string.find(s, "(%b<>)")
+	if timpl then
+		s = string.gsub(s, "%b<>", "")
+		return s, b, timpl
+	else
+		return s, 0, nil
+	end
+end
+
+function rebuild_template(s, b, timpl)
+
+	if b == 0 then
+		return s
+	end
+
+	return string.sub(s, 1, b-1)..timpl..string.sub(s, b, -1)
+end
+
+-- Print method
+function classDeclaration:print (ident,close)
+ print(ident.."Declaration{")
+ print(ident.." mod  = '"..self.mod.."',")
+ print(ident.." type = '"..self.type.."',")
+ print(ident.." ptr  = '"..self.ptr.."',")
+ print(ident.." name = '"..self.name.."',")
+ print(ident.." dim  = '"..self.dim.."',")
+ print(ident.." def  = '"..self.def.."',")
+ print(ident.." ret  = '"..self.ret.."',")
+ print(ident.."}"..close)
+end
+
+-- check if array of values are returned to Lua
+function classDeclaration:requirecollection (t)
+ if self.mod ~= 'const' and
+	    self.dim and self.dim ~= '' and
+				 not isbasic(self.type) and
+				 self.ptr == '' and self:check_public_access() then
+		local type = gsub(self.type,"%s*const%s+","")
+		t[type] = "tolua_collect_" .. clean_template(type)
+		return true
+	end
+	return false
+end
+
+-- declare tag
+function classDeclaration:decltype ()
+
+	self.type = typevar(self.type)
+	if strfind(self.mod,'const') then
+		self.type = 'const '..self.type
+		self.mod = gsub(self.mod,'const%s*','')
+	end
+end
+
+
+-- output type checking
+function classDeclaration:outchecktype (narg)
+ local def
+ local t = isbasic(self.type)
+ if self.def~='' then
+  def = 1
+ else
+  def = 0
+ end
+ if self.dim ~= '' then
+	--if t=='string' then
+	--	return 'tolua_isstringarray(tolua_S,'..narg..','..def..',&tolua_err)'
+	--else
+	return '!tolua_istable(tolua_S,'..narg..',0,&tolua_err)'
+ 	--end
+ elseif t then
+	return '!tolua_is'..t..'(tolua_S,'..narg..','..def..',&tolua_err)'
+ else
+  local is_func = get_is_function(self.type)
+  if self.ptr == '&' or self.ptr == '' then
+  	return '(tolua_isvaluenil(tolua_S,'..narg..',&tolua_err) || !'..is_func..'(tolua_S,'..narg..',"'..self.type..'",'..def..',&tolua_err))'
+  else
+	return '!'..is_func..'(tolua_S,'..narg..',"'..self.type..'",'..def..',&tolua_err)'
+  end
+ end
+end
+
+function classDeclaration:builddeclaration (narg, cplusplus)
+ local array = self.dim ~= '' and tonumber(self.dim)==nil
+	local line = ""
+ local ptr = ''
+ local mod
+ local type = self.type
+ local nctype = gsub(self.type,'const%s+','')
+ if self.dim ~= '' then
+	 type = gsub(self.type,'const%s+','')  -- eliminates const modifier for arrays
+ end
+ if self.ptr~='' and not isbasic(type) then ptr = '*' end
+ line = concatparam(line," ",self.mod,type,ptr)
+ if array then
+  line = concatparam(line,'*')
+ end
+ line = concatparam(line,self.name)
+ if self.dim ~= '' then
+  if tonumber(self.dim)~=nil then
+   line = concatparam(line,'[',self.dim,'];')
+  else
+	if cplusplus then
+		line = concatparam(line,' = Mtolua_new_dim(',type,ptr,', '..self.dim..');')
+	else
+		line = concatparam(line,' = (',type,ptr,'*)',
+		'malloc((',self.dim,')*sizeof(',type,ptr,'));')
+	end
+  end
+ else
+  local t = isbasic(type)
+  line = concatparam(line,' = ')
+  if t == 'state' then
+  	line = concatparam(line, 'tolua_S;')
+  else
+  	--print("t is "..tostring(t)..", ptr is "..tostring(self.ptr))
+  	if t == 'number' and string.find(self.ptr, "%*") then
+  		t = 'userdata'
+  	end
+	if not t and ptr=='' then line = concatparam(line,'*') end
+	line = concatparam(line,'((',self.mod,type)
+	if not t then
+		line = concatparam(line,'*')
+	end
+	line = concatparam(line,') ')
+	if isenum(nctype) then
+		line = concatparam(line,'(int) ')
+	end
+	local def = 0
+	if self.def ~= '' then
+		def = self.def
+		if (ptr == '' or self.ptr == '&') and not t then
+			def = "(void*)&(const "..type..")"..def
+		end
+	end
+	if t then
+		line = concatparam(line,'tolua_to'..t,'(tolua_S,',narg,',',def,'));')
+	else
+		local to_func = get_to_function(type)
+		line = concatparam(line,to_func..'(tolua_S,',narg,',',def,'));')
+	end
+  end
+ end
+	return line
+end
+
+-- Declare variable
+function classDeclaration:declare (narg)
+ if self.dim ~= '' and tonumber(self.dim)==nil then
+	 output('#ifdef __cplusplus\n')
+		output(self:builddeclaration(narg,true))
+		output('#else\n')
+		output(self:builddeclaration(narg,false))
+	 output('#endif\n')
+	else
+		output(self:builddeclaration(narg,false))
+	end
+end
+
+-- Get parameter value
+function classDeclaration:getarray (narg)
+ if self.dim ~= '' then
+	 local type = gsub(self.type,'const ','')
+  output('  {')
+	 output('#ifndef TOLUA_RELEASE\n')
+  local def; if self.def~='' then def=1 else def=0 end
+		local t = isbasic(type)
+		if (t) then
+		   output('   if (!tolua_is'..t..'array(tolua_S,',narg,',',self.dim,',',def,',&tolua_err))')
+		else
+		   output('   if (!tolua_isusertypearray(tolua_S,',narg,',"',type,'",',self.dim,',',def,',&tolua_err))')
+		end
+  output('    goto tolua_lerror;')
+  output('   else\n')
+	 output('#endif\n')
+  output('   {')
+  output('    int i;')
+  output('    for(i=0; i<'..self.dim..';i++)')
+  local t = isbasic(type)
+  local ptr = ''
+  if self.ptr~='' then ptr = '*' end
+  output('   ',self.name..'[i] = ')
+  if not t and ptr=='' then output('*') end
+  output('((',type)
+  if not t then
+   output('*')
+  end
+  output(') ')
+  local def = 0
+  if self.def ~= '' then def = self.def end
+  if t then
+   output('tolua_tofield'..t..'(tolua_S,',narg,',i+1,',def,'));')
+  else
+   output('tolua_tofieldusertype(tolua_S,',narg,',i+1,',def,'));')
+  end
+  output('   }')
+  output('  }')
+ end
+end
+
+-- Get parameter value
+function classDeclaration:setarray (narg)
+ if not strfind(self.type,'const%s+') and self.dim ~= '' then
+	 local type = gsub(self.type,'const ','')
+  output('  {')
+  output('   int i;')
+  output('   for(i=0; i<'..self.dim..';i++)')
+  local t,ct = isbasic(type)
+  if t then
+   output('    tolua_pushfield'..t..'(tolua_S,',narg,',i+1,(',ct,')',self.name,'[i]);')
+  else
+   if self.ptr == '' then
+     output('   {')
+     output('#ifdef __cplusplus\n')
+     output('    void* tolua_obj = Mtolua_new((',type,')(',self.name,'[i]));')
+     output('    tolua_pushfieldusertype_and_takeownership(tolua_S,',narg,',i+1,tolua_obj,"',type,'");')
+     output('#else\n')
+     output('    void* tolua_obj = tolua_copy(tolua_S,(void*)&',self.name,'[i],sizeof(',type,'));')
+     output('    tolua_pushfieldusertype(tolua_S,',narg,',i+1,tolua_obj,"',type,'");')
+     output('#endif\n')
+     output('   }')
+   else
+    output('   tolua_pushfieldusertype(tolua_S,',narg,',i+1,(void*)',self.name,'[i],"',type,'");')
+   end
+  end
+  output('  }')
+ end
+end
+
+-- Free dynamically allocated array
+function classDeclaration:freearray ()
+ if self.dim ~= '' and tonumber(self.dim)==nil then
+	 output('#ifdef __cplusplus\n')
+		output('  Mtolua_delete_dim(',self.name,');')
+	 output('#else\n')
+  output('  free(',self.name,');')
+	 output('#endif\n')
+ end
+end
+
+-- Pass parameter
+function classDeclaration:passpar ()
+ if self.ptr=='&' and not isbasic(self.type) then
+  output('*'..self.name)
+ elseif self.ret=='*' then
+  output('&'..self.name)
+ else
+  output(self.name)
+ end
+end
+
+-- Return parameter value
+function classDeclaration:retvalue ()
+ if self.ret ~= '' then
+  local t,ct = isbasic(self.type)
+  if t and t~='' then
+   output('   tolua_push'..t..'(tolua_S,(',ct,')'..self.name..');')
+  else
+   local push_func = get_push_function(self.type)
+   output('   ',push_func,'(tolua_S,(void*)'..self.name..',"',self.type,'");')
+  end
+  return 1
+ end
+ return 0
+end
+
+-- Internal constructor
+function _Declaration (t)
+
+ setmetatable(t,classDeclaration)
+ t:buildnames()
+ t:checkname()
+ t:checktype()
+ local ft = findtype(t.type) or t.type
+ if not isenum(ft) then
+	t.mod, t.type = applytypedef(t.mod, ft)
+ end
+
+ if t.kind=="var" and (string.find(t.mod, "tolua_property%s") or string.find(t.mod, "tolua_property$")) then
+ 	t.mod = string.gsub(t.mod, "tolua_property", "tolua_property__"..get_property_type())
+ end
+
+ return t
+end
+
+-- Constructor
+-- Expects the string declaration.
+-- The kind of declaration can be "var" or "func".
+function Declaration (s,kind,is_parameter)
+
+ -- eliminate spaces if default value is provided
+ s = gsub(s,"%s*=%s*","=")
+ s = gsub(s, "%s*<", "<")
+
+ local defb,tmpdef
+ defb,_,tmpdef = string.find(s, "(=.*)$")
+ if defb then
+ 	s = string.gsub(s, "=.*$", "")
+ else
+ 	tmpdef = ''
+ end
+ if kind == "var" then
+  -- check the form: void
+  if s == '' or s == 'void' then
+   return _Declaration{type = 'void', kind = kind, is_parameter = is_parameter}
+  end
+ end
+
+ -- check the form: mod type*& name
+ local t = split_c_tokens(s,'%*%s*&')
+ if t.n == 2 then
+  if kind == 'func' then
+   error("#invalid function return type: "..s)
+  end
+  --local m = split(t[1],'%s%s*')
+  local m = split_c_tokens(t[1],'%s+')
+  return _Declaration{
+   name = t[2]..tmpdef,
+   ptr = '*',
+   ret = '&',
+   --type = rebuild_template(m[m.n], tb, timpl),
+   type = m[m.n],
+   mod = concat(m,1,m.n-1),
+   is_parameter = is_parameter,
+   kind = kind
+  }
+ end
+
+ -- check the form: mod type** name
+ t = split_c_tokens(s,'%*%s*%*')
+ if t.n == 2 then
+  if kind == 'func' then
+   error("#invalid function return type: "..s)
+  end
+  --local m = split(t[1],'%s%s*')
+  local m = split_c_tokens(t[1],'%s+')
+  return _Declaration{
+   name = t[2]..tmpdef,
+   ptr = '*',
+   ret = '*',
+   --type = rebuild_template(m[m.n], tb, timpl),
+   type = m[m.n],
+   mod = concat(m,1,m.n-1),
+   is_parameter = is_parameter,
+   kind = kind
+  }
+ end
+
+ -- check the form: mod type& name
+ t = split_c_tokens(s,'&')
+ if t.n == 2 then
+  --local m = split(t[1],'%s%s*')
+  local m = split_c_tokens(t[1],'%s+')
+  return _Declaration{
+   name = t[2]..tmpdef,
+   ptr = '&',
+   --type = rebuild_template(m[m.n], tb, timpl),
+   type = m[m.n],
+   mod = concat(m,1,m.n-1),
+   is_parameter = is_parameter,
+   kind = kind
+  }
+ end
+
+ -- check the form: mod type* name
+ local s1 = gsub(s,"(%b\[\])",function (n) return gsub(n,'%*','\1') end)
+ t = split_c_tokens(s1,'%*')
+ if t.n == 2 then
+  t[2] = gsub(t[2],'\1','%*') -- restore * in dimension expression
+  --local m = split(t[1],'%s%s*')
+  local m = split_c_tokens(t[1],'%s+')
+  return _Declaration{
+   name = t[2]..tmpdef,
+   ptr = '*',
+   type = m[m.n],
+   --type = rebuild_template(m[m.n], tb, timpl),
+   mod = concat(m,1,m.n-1)   ,
+   is_parameter = is_parameter,
+   kind = kind
+  }
+ end
+
+ if kind == 'var' then
+  -- check the form: mod type name
+  --t = split(s,'%s%s*')
+  t = split_c_tokens(s,'%s+')
+  local v
+  if findtype(t[t.n]) then v = create_varname() else v = t[t.n]; t.n = t.n-1 end
+  return _Declaration{
+   name = v..tmpdef,
+   --type = rebuild_template(t[t.n], tb, timpl),
+   type = t[t.n],
+   mod = concat(t,1,t.n-1),
+   is_parameter = is_parameter,
+   kind = kind
+  }
+
+ else -- kind == "func"
+
+  -- check the form: mod type name
+  --t = split(s,'%s%s*')
+  t = split_c_tokens(s,'%s+')
+  local v = t[t.n]  -- last word is the function name
+  local tp,md
+  if t.n>1 then
+   tp = t[t.n-1]
+   md = concat(t,1,t.n-2)
+  end
+  --if tp then tp = rebuild_template(tp, tb, timpl) end
+  return _Declaration{
+   name = v,
+   type = tp,
+   mod = md,
+   is_parameter = is_parameter,
+   kind = kind
+  }
+ end
+
+end
+
-- 
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