diff options
Diffstat (limited to 'lib/tolua++/src/bin/lua/package.lua')
| -rw-r--r-- | lib/tolua++/src/bin/lua/package.lua | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/lib/tolua++/src/bin/lua/package.lua b/lib/tolua++/src/bin/lua/package.lua new file mode 100644 index 000000000..eec136904 --- /dev/null +++ b/lib/tolua++/src/bin/lua/package.lua @@ -0,0 +1,343 @@ +-- tolua: package 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. + + + +-- Package class +-- Represents the whole package being bound. +-- The following fields are stored: +-- {i} = list of objects in the package. +classPackage = { + classtype = 'package' +} +classPackage.__index = classPackage +setmetatable(classPackage,classContainer) + +-- Print method +function classPackage:print () + print("Package: "..self.name) + local i=1 + while self[i] do + self[i]:print("","") + i = i+1 + end +end + +function classPackage:preprocess () + + -- avoid preprocessing embedded Lua code + local L = {} + self.code = gsub(self.code,"\n%s*%$%[","\1") -- deal with embedded lua code + self.code = gsub(self.code,"\n%s*%$%]","\2") + self.code = gsub(self.code,"(%b\1\2)", function (c) + tinsert(L,c) + return "\n#["..getn(L).."]#" + end) + -- avoid preprocessing embedded C code + local C = {} + self.code = gsub(self.code,"\n%s*%$%<","\3") -- deal with embedded C code + self.code = gsub(self.code,"\n%s*%$%>","\4") + self.code = gsub(self.code,"(%b\3\4)", function (c) + tinsert(C,c) + return "\n#<"..getn(C)..">#" + end) + -- avoid preprocessing embedded C code + self.code = gsub(self.code,"\n%s*%$%{","\5") -- deal with embedded C code + self.code = gsub(self.code,"\n%s*%$%}","\6") + self.code = gsub(self.code,"(%b\5\6)", function (c) + tinsert(C,c) + return "\n#<"..getn(C)..">#" + end) + + --self.code = gsub(self.code,"\n%s*#[^d][^\n]*\n", "\n\n") -- eliminate preprocessor directives that don't start with 'd' + self.code = gsub(self.code,"\n[ \t]*#[ \t]*[^d%<%[]", "\n//") -- eliminate preprocessor directives that don't start with 'd' + + -- avoid preprocessing verbatim lines + local V = {} + self.code = gsub(self.code,"\n(%s*%$[^%[%]][^\n]*)",function (v) + tinsert(V,v) + return "\n#"..getn(V).."#" + end) + + -- perform global substitution + + self.code = gsub(self.code,"(//[^\n]*)","") -- eliminate C++ comments + self.code = gsub(self.code,"/%*","\1") + self.code = gsub(self.code,"%*/","\2") + self.code = gsub(self.code,"%b\1\2","") + self.code = gsub(self.code,"\1","/%*") + self.code = gsub(self.code,"\2","%*/") + self.code = gsub(self.code,"%s*@%s*","@") -- eliminate spaces beside @ + self.code = gsub(self.code,"%s?inline(%s)","%1") -- eliminate 'inline' keyword + --self.code = gsub(self.code,"%s?extern(%s)","%1") -- eliminate 'extern' keyword + --self.code = gsub(self.code,"%s?virtual(%s)","%1") -- eliminate 'virtual' keyword + --self.code = gsub(self.code,"public:","") -- eliminate 'public:' keyword + self.code = gsub(self.code,"([^%w_])void%s*%*","%1_userdata ") -- substitute 'void*' + self.code = gsub(self.code,"([^%w_])void%s*%*","%1_userdata ") -- substitute 'void*' + self.code = gsub(self.code,"([^%w_])char%s*%*","%1_cstring ") -- substitute 'char*' + self.code = gsub(self.code,"([^%w_])lua_State%s*%*","%1_lstate ") -- substitute 'lua_State*' + + -- restore embedded Lua code + self.code = gsub(self.code,"%#%[(%d+)%]%#",function (n) + return L[tonumber(n)] + end) + -- restore embedded C code + self.code = gsub(self.code,"%#%<(%d+)%>%#",function (n) + return C[tonumber(n)] + end) + -- restore verbatim lines + self.code = gsub(self.code,"%#(%d+)%#",function (n) + return V[tonumber(n)] + end) + + self.code = string.gsub(self.code, "\n%s*%$([^\n]+)", function (l) + Verbatim(l.."\n") + return "\n" + end) +end + +-- translate verbatim +function classPackage:preamble () + output('/*\n') + output('** Lua binding: '..self.name..'\n') + output('** Generated automatically by '..TOLUA_VERSION..' on '..date()..'.\n') + output('*/\n\n') + + output('#ifndef __cplusplus\n') + output('#include "stdlib.h"\n') + output('#endif\n') + output('#include "string.h"\n\n') + output('#include "tolua++.h"\n\n') + + if not flags.h then + output('/* Exported function */') + output('TOLUA_API int tolua_'..self.name..'_open (lua_State* tolua_S);') + output('\n') + end + + local i=1 + while self[i] do + self[i]:preamble() + i = i+1 + end + + if self:requirecollection(_collect) then + output('\n') + output('/* function to release collected object via destructor */') + output('#ifdef __cplusplus\n') + for i,v in pairs(_collect) do + output('\nstatic int '..v..' (lua_State* tolua_S)') + output('{') + output(' '..i..'* self = ('..i..'*) tolua_tousertype(tolua_S,1,0);') + output(' Mtolua_delete(self);') + output(' return 0;') + output('}') + end + output('#endif\n\n') + end + + output('\n') + output('/* function to register type */') + output('static void tolua_reg_types (lua_State* tolua_S)') + output('{') + + if flags.t then + output("#ifndef Mtolua_typeid\n#define Mtolua_typeid(L,TI,T)\n#endif\n") + end + foreach(_usertype,function(n,v) + if (not _global_classes[v]) or _global_classes[v]:check_public_access() then + output(' tolua_usertype(tolua_S,"',v,'");') + if flags.t then + output(' Mtolua_typeid(tolua_S,typeid(',v,'), "',v,'");') + end + end + end) + output('}') + output('\n') +end + +-- register package +-- write package open function +function classPackage:register (pre) + pre = pre or '' + push(self) + output(pre.."/* Open function */") + output(pre.."TOLUA_API int tolua_"..self.name.."_open (lua_State* tolua_S)") + output(pre.."{") + output(pre.." tolua_open(tolua_S);") + output(pre.." tolua_reg_types(tolua_S);") + output(pre.." tolua_module(tolua_S,NULL,",self:hasvar(),");") + output(pre.." tolua_beginmodule(tolua_S,NULL);") + local i=1 + while self[i] do + self[i]:register(pre.." ") + i = i+1 + end + output(pre.." tolua_endmodule(tolua_S);") + output(pre.." return 1;") + output(pre.."}") + + output("\n\n") + output("#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501\n"); + output(pre.."TOLUA_API int luaopen_"..self.name.." (lua_State* tolua_S) {") + output(pre.." return tolua_"..self.name.."_open(tolua_S);") + output(pre.."};") + output("#endif\n\n") + + pop() +end + +-- write header file +function classPackage:header () + output('/*\n') output('** Lua binding: '..self.name..'\n') + output('** Generated automatically by '..TOLUA_VERSION..' on '..date()..'.\n') + output('*/\n\n') + + if not flags.h then + output('/* Exported function */') + output('TOLUA_API int tolua_'..self.name..'_open (lua_State* tolua_S);') + output('\n') + end +end + +-- Internal constructor +function _Package (self) + setmetatable(self,classPackage) + return self +end + +-- Parse C header file with tolua directives +-- *** Thanks to Ariel Manzur for fixing bugs in nested directives *** +function extract_code(fn,s) + local code = '\n$#include "'..fn..'"\n' + s= "\n" .. s .. "\n" -- add blank lines as sentinels + local _,e,c,t = strfind(s, "\n([^\n]-)[Tt][Oo][Ll][Uu][Aa]_([^%s]*)[^\n]*\n") + while e do + t = strlower(t) + if t == "begin" then + _,e,c = strfind(s,"(.-)\n[^\n]*[Tt][Oo][Ll][Uu][Aa]_[Ee][Nn][Dd][^\n]*\n",e) + if not e then + tolua_error("Unbalanced 'tolua_begin' directive in header file") + end + end + code = code .. c .. "\n" + _,e,c,t = strfind(s, "\n([^\n]-)[Tt][Oo][Ll][Uu][Aa]_([^%s]*)[^\n]*\n",e) + end + return code +end + +-- Constructor +-- Expects the package name, the file extension, and the file text. +function Package (name,fn) + local ext = "pkg" + + -- open input file, if any + local st,msg + if fn then + st, msg = readfrom(flags.f) + if not st then + error('#'..msg) + end + local _; _, _, ext = strfind(fn,".*%.(.*)$") + end + local code + if ext == 'pkg' then + code = prep(st) + else + code = "\n" .. read('*a') + if ext == 'h' or ext == 'hpp' then + code = extract_code(fn,code) + end + end + + -- close file + if fn then + readfrom() + end + + -- deal with include directive + local nsubst + repeat + code,nsubst = gsub(code,'\n%s*%$(.)file%s*"(.-)"([^\n]*)\n', + function (kind,fn,extra) + local _, _, ext = strfind(fn,".*%.(.*)$") + local fp,msg = openfile(fn,'r') + if not fp then + error('#'..msg..': '..fn) + end + if kind == 'p' then + local s = prep(fp) + closefile(fp) + return s + end + local s = read(fp,'*a') + closefile(fp) + if kind == 'c' or kind == 'h' then + return extract_code(fn,s) + elseif kind == 'l' then + return "\n$[--##"..fn.."\n" .. s .. "\n$]\n" + elseif kind == 'i' then + local t = {code=s} + extra = string.gsub(extra, "^%s*,%s*", "") + local pars = split_c_tokens(extra, ",") + include_file_hook(t, fn, unpack(pars)) + return "\n\n" .. t.code + else + error('#Invalid include directive (use $cfile, $pfile, $lfile or $ifile)') + end + end) + until nsubst==0 + + -- deal with renaming directive + repeat -- I don't know why this is necesary + code,nsubst = gsub(code,'\n%s*%$renaming%s*(.-)%s*\n', function (r) appendrenaming(r) return "\n" end) + until nsubst == 0 + + local t = _Package(_Container{name=name, code=code}) + push(t) + preprocess_hook(t) + t:preprocess() + preparse_hook(t) + t:parse(t.code) + pop() + return t +end + + +setmetatable(_extra_parameters, { __index = _G }) + +function prep(file) + + local chunk = {'local __ret = {"\\n"}\n'} + for line in file:lines() do + if string.find(line, "^##") then + table.insert(chunk, string.sub(line, 3) .. "\n") + else + local last = 1 + for text, expr, index in string.gfind(line, "(.-)$(%b())()") do + last = index + if text ~= "" then + table.insert(chunk, string.format('table.insert(__ret, %q )', text)) + end + table.insert(chunk, string.format('table.insert(__ret, %s )', expr)) + end + table.insert(chunk, string.format('table.insert(__ret, %q)\n', + string.sub(line, last).."\n")) + end + end + table.insert(chunk, '\nreturn table.concat(__ret)\n') + local f,e = loadstring(table.concat(chunk)) + if e then + error("#"..e) + end + setfenv(f, _extra_parameters) + return f() +end |