From aafef187ef856a36c3f8e599afea2dee44f08904 Mon Sep 17 00:00:00 2001 From: faketruth Date: Mon, 3 Oct 2011 19:25:04 +0000 Subject: Source for additional projects -jsoncpp -lua -tolua++ -WebServer -zlib -iniFile git-svn-id: http://mc-server.googlecode.com/svn/trunk@4 0a769ca7-a7f5-676a-18bf-c427514a06d6 --- tolua++-1.0.93/src/lib/tolua_map.c | 704 +++++++++++++++++++++++++++++++++++++ 1 file changed, 704 insertions(+) create mode 100644 tolua++-1.0.93/src/lib/tolua_map.c (limited to 'tolua++-1.0.93/src/lib/tolua_map.c') diff --git a/tolua++-1.0.93/src/lib/tolua_map.c b/tolua++-1.0.93/src/lib/tolua_map.c new file mode 100644 index 000000000..d00e7069b --- /dev/null +++ b/tolua++-1.0.93/src/lib/tolua_map.c @@ -0,0 +1,704 @@ +/* tolua: functions to map features +** Support code for Lua bindings. +** Written by Waldemar Celes +** TeCGraf/PUC-Rio +** Apr 2003 +** $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. +*/ + +#include "tolua++.h" +#include "tolua_event.h" +#include "lauxlib.h" + +#include +#include +#include +#include + + +/* Create metatable + * Create and register new metatable +*/ +static int tolua_newmetatable (lua_State* L, char* name) +{ + int r = luaL_newmetatable(L,name); + + #ifdef LUA_VERSION_NUM /* only lua 5.1 */ + if (r) { + lua_pushvalue(L, -1); + lua_pushstring(L, name); + lua_settable(L, LUA_REGISTRYINDEX); /* reg[mt] = type_name */ + }; + #endif + + if (r) + tolua_classevents(L); /* set meta events */ + lua_pop(L,1); + return r; +} + +/* Map super classes + * It sets 'name' as being also a 'base', mapping all super classes of 'base' in 'name' +*/ +static void mapsuper (lua_State* L, const char* name, const char* base) +{ + /* push registry.super */ + lua_pushstring(L,"tolua_super"); + lua_rawget(L,LUA_REGISTRYINDEX); /* stack: super */ + luaL_getmetatable(L,name); /* stack: super mt */ + lua_rawget(L,-2); /* stack: super table */ + if (lua_isnil(L,-1)) + { + /* create table */ + lua_pop(L,1); + lua_newtable(L); /* stack: super table */ + luaL_getmetatable(L,name); /* stack: super table mt */ + lua_pushvalue(L,-2); /* stack: super table mt table */ + lua_rawset(L,-4); /* stack: super table */ + } + + /* set base as super class */ + lua_pushstring(L,base); + lua_pushboolean(L,1); + lua_rawset(L,-3); /* stack: super table */ + + /* set all super class of base as super class of name */ + luaL_getmetatable(L,base); /* stack: super table base_mt */ + lua_rawget(L,-3); /* stack: super table base_table */ + if (lua_istable(L,-1)) + { + /* traverse base table */ + lua_pushnil(L); /* first key */ + while (lua_next(L,-2) != 0) + { + /* stack: ... base_table key value */ + lua_pushvalue(L,-2); /* stack: ... base_table key value key */ + lua_insert(L,-2); /* stack: ... base_table key key value */ + lua_rawset(L,-5); /* stack: ... base_table key */ + } + } + lua_pop(L,3); /* stack: */ +} + +/* creates a 'tolua_ubox' table for base clases, and +// expects the metatable and base metatable on the stack */ +static void set_ubox(lua_State* L) { + + /* mt basemt */ + if (!lua_isnil(L, -1)) { + lua_pushstring(L, "tolua_ubox"); + lua_rawget(L,-2); + } else { + lua_pushnil(L); + }; + /* mt basemt base_ubox */ + if (!lua_isnil(L,-1)) { + lua_pushstring(L, "tolua_ubox"); + lua_insert(L, -2); + /* mt basemt key ubox */ + lua_rawset(L,-4); + /* (mt with ubox) basemt */ + } else { + /* mt basemt nil */ + lua_pop(L, 1); + lua_pushstring(L,"tolua_ubox"); lua_newtable(L); + /* make weak value metatable for ubox table to allow userdata to be + garbage-collected */ + lua_newtable(L); lua_pushliteral(L, "__mode"); lua_pushliteral(L, "v"); lua_rawset(L, -3); /* stack: string ubox mt */ + lua_setmetatable(L, -2); /* stack:mt basemt string ubox */ + lua_rawset(L,-4); + }; + +}; + +/* Map inheritance + * It sets 'name' as derived from 'base' by setting 'base' as metatable of 'name' +*/ +static void mapinheritance (lua_State* L, const char* name, const char* base) +{ + /* set metatable inheritance */ + luaL_getmetatable(L,name); + + if (base && *base) + luaL_getmetatable(L,base); + else { + + if (lua_getmetatable(L, -1)) { /* already has a mt, we don't overwrite it */ + lua_pop(L, 2); + return; + }; + luaL_getmetatable(L,"tolua_commonclass"); + }; + + set_ubox(L); + + lua_setmetatable(L,-2); + lua_pop(L,1); +} + +/* Object type +*/ +static int tolua_bnd_type (lua_State* L) +{ + tolua_typename(L,lua_gettop(L)); + return 1; +} + +/* Take ownership +*/ +static int tolua_bnd_takeownership (lua_State* L) +{ + int success = 0; + if (lua_isuserdata(L,1)) + { + if (lua_getmetatable(L,1)) /* if metatable? */ + { + lua_pop(L,1); /* clear metatable off stack */ + /* force garbage collection to avoid C to reuse a to-be-collected address */ + #ifdef LUA_VERSION_NUM + lua_gc(L, LUA_GCCOLLECT, 0); + #else + lua_setgcthreshold(L,0); + #endif + + success = tolua_register_gc(L,1); + } + } + lua_pushboolean(L,success!=0); + return 1; +} + +/* Release ownership +*/ +static int tolua_bnd_releaseownership (lua_State* L) +{ + int done = 0; + if (lua_isuserdata(L,1)) + { + void* u = *((void**)lua_touserdata(L,1)); + /* force garbage collection to avoid releasing a to-be-collected address */ + #ifdef LUA_VERSION_NUM + lua_gc(L, LUA_GCCOLLECT, 0); + #else + lua_setgcthreshold(L,0); + #endif + lua_pushstring(L,"tolua_gc"); + lua_rawget(L,LUA_REGISTRYINDEX); + lua_pushlightuserdata(L,u); + lua_rawget(L,-2); + lua_getmetatable(L,1); + if (lua_rawequal(L,-1,-2)) /* check that we are releasing the correct type */ + { + lua_pushlightuserdata(L,u); + lua_pushnil(L); + lua_rawset(L,-5); + done = 1; + } + } + lua_pushboolean(L,done!=0); + return 1; +} + +/* Type casting +*/ +static int tolua_bnd_cast (lua_State* L) +{ + +/* // old code + void* v = tolua_tousertype(L,1,NULL); + const char* s = tolua_tostring(L,2,NULL); + if (v && s) + tolua_pushusertype(L,v,s); + else + lua_pushnil(L); + return 1; +*/ + + void* v; + const char* s; + if (lua_islightuserdata(L, 1)) { + v = tolua_touserdata(L, 1, NULL); + } else { + v = tolua_tousertype(L, 1, 0); + }; + + s = tolua_tostring(L,2,NULL); + if (v && s) + tolua_pushusertype(L,v,s); + else + lua_pushnil(L); + return 1; +} + +/* Inheritance +*/ +static int tolua_bnd_inherit (lua_State* L) { + + /* stack: lua object, c object */ + lua_pushstring(L, ".c_instance"); + lua_pushvalue(L, -2); + lua_rawset(L, -4); + /* l_obj[".c_instance"] = c_obj */ + + return 0; +}; + +#ifdef LUA_VERSION_NUM /* lua 5.1 */ +static int tolua_bnd_setpeer(lua_State* L) { + + /* stack: userdata, table */ + if (!lua_isuserdata(L, -2)) { + lua_pushstring(L, "Invalid argument #1 to setpeer: userdata expected."); + lua_error(L); + }; + + if (lua_isnil(L, -1)) { + + lua_pop(L, 1); + lua_pushvalue(L, TOLUA_NOPEER); + }; + lua_setfenv(L, -2); + + return 0; +}; + +static int tolua_bnd_getpeer(lua_State* L) { + + /* stack: userdata */ + lua_getfenv(L, -1); + if (lua_rawequal(L, -1, TOLUA_NOPEER)) { + lua_pop(L, 1); + lua_pushnil(L); + }; + return 1; +}; +#endif + +/* static int class_gc_event (lua_State* L); */ + +TOLUA_API void tolua_open (lua_State* L) +{ + int top = lua_gettop(L); + lua_pushstring(L,"tolua_opened"); + lua_rawget(L,LUA_REGISTRYINDEX); + if (!lua_isboolean(L,-1)) + { + lua_pushstring(L,"tolua_opened"); lua_pushboolean(L,1); lua_rawset(L,LUA_REGISTRYINDEX); + + #ifndef LUA_VERSION_NUM /* only prior to lua 5.1 */ + /* create peer object table */ + lua_pushstring(L, "tolua_peers"); lua_newtable(L); + /* make weak key metatable for peers indexed by userdata object */ + lua_newtable(L); lua_pushliteral(L, "__mode"); lua_pushliteral(L, "k"); lua_rawset(L, -3); /* stack: string peers mt */ + lua_setmetatable(L, -2); /* stack: string peers */ + lua_rawset(L,LUA_REGISTRYINDEX); + #endif + + /* create object ptr -> udata mapping table */ + lua_pushstring(L,"tolua_ubox"); lua_newtable(L); + /* make weak value metatable for ubox table to allow userdata to be + garbage-collected */ + lua_newtable(L); lua_pushliteral(L, "__mode"); lua_pushliteral(L, "v"); lua_rawset(L, -3); /* stack: string ubox mt */ + lua_setmetatable(L, -2); /* stack: string ubox */ + lua_rawset(L,LUA_REGISTRYINDEX); + + lua_pushstring(L,"tolua_super"); lua_newtable(L); lua_rawset(L,LUA_REGISTRYINDEX); + lua_pushstring(L,"tolua_gc"); lua_newtable(L);lua_rawset(L,LUA_REGISTRYINDEX); + + /* create gc_event closure */ + lua_pushstring(L, "tolua_gc_event"); + lua_pushstring(L, "tolua_gc"); + lua_rawget(L, LUA_REGISTRYINDEX); + lua_pushstring(L, "tolua_super"); + lua_rawget(L, LUA_REGISTRYINDEX); + lua_pushcclosure(L, class_gc_event, 2); + lua_rawset(L, LUA_REGISTRYINDEX); + + tolua_newmetatable(L,"tolua_commonclass"); + + tolua_module(L,NULL,0); + tolua_beginmodule(L,NULL); + tolua_module(L,"tolua",0); + tolua_beginmodule(L,"tolua"); + tolua_function(L,"type",tolua_bnd_type); + tolua_function(L,"takeownership",tolua_bnd_takeownership); + tolua_function(L,"releaseownership",tolua_bnd_releaseownership); + tolua_function(L,"cast",tolua_bnd_cast); + tolua_function(L,"inherit", tolua_bnd_inherit); + #ifdef LUA_VERSION_NUM /* lua 5.1 */ + tolua_function(L, "setpeer", tolua_bnd_setpeer); + tolua_function(L, "getpeer", tolua_bnd_getpeer); + #endif + + tolua_endmodule(L); + tolua_endmodule(L); + } + lua_settop(L,top); +} + +/* Copy a C object +*/ +TOLUA_API void* tolua_copy (lua_State* L, void* value, unsigned int size) +{ + void* clone = (void*)malloc(size); + if (clone) + memcpy(clone,value,size); + else + tolua_error(L,"insuficient memory",NULL); + return clone; +} + +/* Default collect function +*/ +TOLUA_API int tolua_default_collect (lua_State* tolua_S) +{ + void* self = tolua_tousertype(tolua_S,1,0); + free(self); + return 0; +} + +/* Do clone +*/ +TOLUA_API int tolua_register_gc (lua_State* L, int lo) +{ + int success = 1; + void *value = *(void **)lua_touserdata(L,lo); + lua_pushstring(L,"tolua_gc"); + lua_rawget(L,LUA_REGISTRYINDEX); + lua_pushlightuserdata(L,value); + lua_rawget(L,-2); + if (!lua_isnil(L,-1)) /* make sure that object is not already owned */ + success = 0; + else + { + lua_pushlightuserdata(L,value); + lua_getmetatable(L,lo); + lua_rawset(L,-4); + } + lua_pop(L,2); + return success; +} + +/* Register a usertype + * It creates the correspoding metatable in the registry, for both 'type' and 'const type'. + * It maps 'const type' as being also a 'type' +*/ +TOLUA_API void tolua_usertype (lua_State* L, const char* type) +{ + char ctype[128] = "const "; + strncat(ctype,type,120); + + /* create both metatables */ + if (tolua_newmetatable(L,ctype) && tolua_newmetatable(L,type)) + mapsuper(L,type,ctype); /* 'type' is also a 'const type' */ +} + + +/* Begin module + * It pushes the module (or class) table on the stack +*/ +TOLUA_API void tolua_beginmodule (lua_State* L, const char* name) +{ + if (name) + { + lua_pushstring(L,name); + lua_rawget(L,-2); + } + else + lua_pushvalue(L,LUA_GLOBALSINDEX); +} + +/* End module + * It pops the module (or class) from the stack +*/ +TOLUA_API void tolua_endmodule (lua_State* L) +{ + lua_pop(L,1); +} + +/* Map module + * It creates a new module +*/ +#if 1 +TOLUA_API void tolua_module (lua_State* L, const char* name, int hasvar) +{ + if (name) + { + /* tolua module */ + lua_pushstring(L,name); + lua_rawget(L,-2); + if (!lua_istable(L,-1)) /* check if module already exists */ + { + lua_pop(L,1); + lua_newtable(L); + lua_pushstring(L,name); + lua_pushvalue(L,-2); + lua_rawset(L,-4); /* assing module into module */ + } + } + else + { + /* global table */ + lua_pushvalue(L,LUA_GLOBALSINDEX); + } + if (hasvar) + { + if (!tolua_ismodulemetatable(L)) /* check if it already has a module metatable */ + { + /* create metatable to get/set C/C++ variable */ + lua_newtable(L); + tolua_moduleevents(L); + if (lua_getmetatable(L,-2)) + lua_setmetatable(L,-2); /* set old metatable as metatable of metatable */ + lua_setmetatable(L,-2); + } + } + lua_pop(L,1); /* pop module */ +} +#else +TOLUA_API void tolua_module (lua_State* L, const char* name, int hasvar) +{ + if (name) + { + /* tolua module */ + lua_pushstring(L,name); + lua_newtable(L); + } + else + { + /* global table */ + lua_pushvalue(L,LUA_GLOBALSINDEX); + } + if (hasvar) + { + /* create metatable to get/set C/C++ variable */ + lua_newtable(L); + tolua_moduleevents(L); + if (lua_getmetatable(L,-2)) + lua_setmetatable(L,-2); /* set old metatable as metatable of metatable */ + lua_setmetatable(L,-2); + } + if (name) + lua_rawset(L,-3); /* assing module into module */ + else + lua_pop(L,1); /* pop global table */ +} +#endif + +static void push_collector(lua_State* L, const char* type, lua_CFunction col) { + + /* push collector function, but only if it's not NULL, or if there's no + collector already */ + if (!col) return; + luaL_getmetatable(L,type); + lua_pushstring(L,".collector"); + /* + if (!col) { + lua_pushvalue(L, -1); + lua_rawget(L, -3); + if (!lua_isnil(L, -1)) { + lua_pop(L, 3); + return; + }; + lua_pop(L, 1); + }; + // */ + lua_pushcfunction(L,col); + + lua_rawset(L,-3); + lua_pop(L, 1); +}; + +/* Map C class + * It maps a C class, setting the appropriate inheritance and super classes. +*/ +TOLUA_API void tolua_cclass (lua_State* L, const char* lname, const char* name, const char* base, lua_CFunction col) +{ + char cname[128] = "const "; + char cbase[128] = "const "; + strncat(cname,name,120); + strncat(cbase,base,120); + + mapinheritance(L,name,base); + mapinheritance(L,cname,name); + + mapsuper(L,cname,cbase); + mapsuper(L,name,base); + + lua_pushstring(L,lname); + + push_collector(L, name, col); + /* + luaL_getmetatable(L,name); + lua_pushstring(L,".collector"); + lua_pushcfunction(L,col); + + lua_rawset(L,-3); + */ + + luaL_getmetatable(L,name); + lua_rawset(L,-3); /* assign class metatable to module */ + + /* now we also need to store the collector table for the const + instances of the class */ + push_collector(L, cname, col); + /* + luaL_getmetatable(L,cname); + lua_pushstring(L,".collector"); + lua_pushcfunction(L,col); + lua_rawset(L,-3); + lua_pop(L,1); + */ + + +} + +/* Add base + * It adds additional base classes to a class (for multiple inheritance) + * (not for now) +TOLUA_API void tolua_addbase(lua_State* L, char* name, char* base) { + + char cname[128] = "const "; + char cbase[128] = "const "; + strncat(cname,name,120); + strncat(cbase,base,120); + + mapsuper(L,cname,cbase); + mapsuper(L,name,base); +}; +*/ + +/* Map function + * It assigns a function into the current module (or class) +*/ +TOLUA_API void tolua_function (lua_State* L, const char* name, lua_CFunction func) +{ + lua_pushstring(L,name); + lua_pushcfunction(L,func); + lua_rawset(L,-3); +} + +/* sets the __call event for the class (expects the class' main table on top) */ +/* never really worked :( +TOLUA_API void tolua_set_call_event(lua_State* L, lua_CFunction func, char* type) { + + lua_getmetatable(L, -1); + //luaL_getmetatable(L, type); + lua_pushstring(L,"__call"); + lua_pushcfunction(L,func); + lua_rawset(L,-3); + lua_pop(L, 1); +}; +*/ + +/* Map constant number + * It assigns a constant number into the current module (or class) +*/ +TOLUA_API void tolua_constant (lua_State* L, const char* name, lua_Number value) +{ + lua_pushstring(L,name); + tolua_pushnumber(L,value); + lua_rawset(L,-3); +} + + +/* Map variable + * It assigns a variable into the current module (or class) +*/ +TOLUA_API void tolua_variable (lua_State* L, const char* name, lua_CFunction get, lua_CFunction set) +{ + /* get func */ + lua_pushstring(L,".get"); + lua_rawget(L,-2); + if (!lua_istable(L,-1)) + { + /* create .get table, leaving it at the top */ + lua_pop(L,1); + lua_newtable(L); + lua_pushstring(L,".get"); + lua_pushvalue(L,-2); + lua_rawset(L,-4); + } + lua_pushstring(L,name); + lua_pushcfunction(L,get); + lua_rawset(L,-3); /* store variable */ + lua_pop(L,1); /* pop .get table */ + + /* set func */ + if (set) + { + lua_pushstring(L,".set"); + lua_rawget(L,-2); + if (!lua_istable(L,-1)) + { + /* create .set table, leaving it at the top */ + lua_pop(L,1); + lua_newtable(L); + lua_pushstring(L,".set"); + lua_pushvalue(L,-2); + lua_rawset(L,-4); + } + lua_pushstring(L,name); + lua_pushcfunction(L,set); + lua_rawset(L,-3); /* store variable */ + lua_pop(L,1); /* pop .set table */ + } +} + +/* Access const array + * It reports an error when trying to write into a const array +*/ +static int const_array (lua_State* L) +{ + luaL_error(L,"value of const array cannot be changed"); + return 0; +} + +/* Map an array + * It assigns an array into the current module (or class) +*/ +TOLUA_API void tolua_array (lua_State* L, const char* name, lua_CFunction get, lua_CFunction set) +{ + lua_pushstring(L,".get"); + lua_rawget(L,-2); + if (!lua_istable(L,-1)) + { + /* create .get table, leaving it at the top */ + lua_pop(L,1); + lua_newtable(L); + lua_pushstring(L,".get"); + lua_pushvalue(L,-2); + lua_rawset(L,-4); + } + lua_pushstring(L,name); + + lua_newtable(L); /* create array metatable */ + lua_pushvalue(L,-1); + lua_setmetatable(L,-2); /* set the own table as metatable (for modules) */ + lua_pushstring(L,"__index"); + lua_pushcfunction(L,get); + lua_rawset(L,-3); + lua_pushstring(L,"__newindex"); + lua_pushcfunction(L,set?set:const_array); + lua_rawset(L,-3); + + lua_rawset(L,-3); /* store variable */ + lua_pop(L,1); /* pop .get table */ +} + + +TOLUA_API void tolua_dobuffer(lua_State* L, char* B, unsigned int size, const char* name) { + + #ifdef LUA_VERSION_NUM /* lua 5.1 */ + luaL_loadbuffer(L, B, size, name) || lua_pcall(L, 0, 0, 0); + #else + lua_dobuffer(L, B, size, name); + #endif +}; + -- cgit v1.2.3