mirror of
https://github.com/cheat-engine/cheat-engine
synced 2026-08-15 02:26:08 -04:00
375 lines
9.1 KiB
ObjectPascal
375 lines
9.1 KiB
ObjectPascal
unit LuaObject;
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{$mode delphi}
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interface
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uses
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Classes, SysUtils,lua, lualib, lauxlib, math, typinfo, Controls,
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ComCtrls, StdCtrls, Forms;
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procedure InitializeLuaObject;
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procedure object_addMetaData(L: PLua_state; metatable: integer; userdata: integer );
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function lua_getProperty(L: PLua_state): integer; cdecl;
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function lua_setProperty(L: PLua_state): integer; cdecl;
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implementation
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uses LuaClass, LuaHandler, pluginexports, LuaCaller;
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function object_destroy(L: PLua_State): integer; cdecl;
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var c: TObject;
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metatable: integer;
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i: integer;
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begin
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i:=ifthen(lua_type(L, lua_upvalueindex(1))=LUA_TUSERDATA, lua_upvalueindex(1), 1);
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c:=pointer(lua_touserdata(L, i)^);
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lua_getmetatable(L, i);
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metatable:=lua_gettop(L);
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try
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c.free;
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except
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end;
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if lua_type(L, metatable)=LUA_TTABLE then
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begin
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lua_pushstring(L, '__autodestroy');
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lua_pushboolean(L, false); //make it so it doesn't need to be destroyed (again)
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lua_settable(L, metatable);
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end;
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end;
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function object_getClassName(L: PLua_state): integer; cdecl;
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var c: TObject;
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begin
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c:=luaclass_getClassObject(L);
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lua_pushstring(L, c.ClassName);
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result:=1;
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end;
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procedure object_addMetaData(L: PLua_state; metatable: integer; userdata: integer );
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begin
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//no parent class metadata to add
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luaclass_addClassFunctionToTable(L, metatable, userdata, 'getClassName', object_getClassName);
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luaclass_addClassFunctionToTable(L, metatable, userdata, 'destroy', object_destroy);
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luaclass_addPropertyToTable(L, metatable, userdata, 'ClassName', object_getClassName, nil);
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end;
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function getPropertyList(L: PLua_state): integer; cdecl;
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var parameters: integer;
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c: tobject;
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begin
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result:=0;
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parameters:=lua_gettop(L);
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if parameters=1 then
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begin
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c:=lua_toceuserdata(L, -1);
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lua_pop(L, lua_gettop(l));
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lua_pushlightuserdata(L, ce_getPropertylist(c));
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result:=1;
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end else lua_pop(L, lua_gettop(l));
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end;
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function lua_getProperty(L: PLua_state): integer; cdecl;
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var parameters: integer;
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c,c2: tobject;
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t: ptruint;
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p: string;
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svalue: string;
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size: integer;
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pinfo: PPropInfo;
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m: tmethod;
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begin
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result:=0;
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parameters:=lua_gettop(L);
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if parameters=2 then
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begin
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if lua_isuserdata(L,1) then
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c:=lua_toceuserdata(L, 1)
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else
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if lua_isnumber(L,1) then
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c:=pointer(lua_tointeger(L,1))
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else
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begin
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p:=Lua_ToString(L,1);
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if p<>'' then
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c:=pointer(StrToInt64(p));
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end;
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p:=Lua_ToString(L, 2);
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lua_pop(L, lua_gettop(l));
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pinfo:=GetPropInfo(c, p);
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if pinfo<>nil then
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begin
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result:=1;
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{ possible types:
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tkUnknown,tkInteger,tkChar,tkEnumeration,tkFloat,
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tkSet,tkMethod,tkSString,tkLString,tkAString,
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tkWString,tkVariant,tkArray,tkRecord,tkInterface,
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tkClass,tkObject,tkWChar,tkBool,tkInt64,tkQWord,
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tkDynArray,tkInterfaceRaw,tkProcVar,tkUString,tkUChar,
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tkHelper
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}
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case pinfo.PropType.Kind of
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tkInteger,tkInt64,tkQWord: lua_pushinteger(L, GetPropValue(c, p,false));
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tkBool: lua_pushboolean(L, GetPropValue(c, p, false));
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tkFloat: lua_pushnumber(L, GetPropValue(c, p, false));
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tkClass, tkObject:
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begin
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t:=GetPropValue(c,p,false);
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c2:=tobject(t);
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luaclass_newClass(L, c2);
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end;
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tkMethod: LuaCaller_pushMethodProperty(L, GetMethodProp(c,p), pinfo.PropType.Name);
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tkSet: lua_pushstring(L, GetSetProp(c, pinfo, true));
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else lua_pushstring(L, GetPropValue(c, p,true));
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end;
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end
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else
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begin
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lua_pushnil(L);
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result:=1;
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end;
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end;
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end;
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function lua_setProperty(L: PLua_state): integer; cdecl;
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var parameters: integer;
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c,c2: tobject;
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p,v: string;
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pinfo: PPropInfo;
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f: integer;
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begin
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result:=0;
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parameters:=lua_gettop(L);
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if parameters=3 then
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begin
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if lua_isuserdata(L,1) then
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c:=lua_toceuserdata(L, 1)
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else
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if lua_isnumber(L,1) then
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c:=pointer(lua_tointeger(L,1))
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else
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begin
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p:=Lua_ToString(L,1);
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if p<>'' then
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c:=pointer(StrToInt64(p));
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end;
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p:=Lua_ToString(L, 2);
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v:=Lua_ToString(L, 3);
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try
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pinfo:=GetPropInfo(c, p);
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if pinfo<>nil then
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begin
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//it's a published property
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case pinfo.PropType.Kind of
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tkInteger,tkInt64,tkQWord: SetPropValue(c, p, lua_tointeger(L, 3));
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tkBool: SetPropValue(c, p, lua_toboolean(L, 3));
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tkFloat: SetPropValue(c, p, lua_tonumber(L, 3));
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tkClass, tkObject:
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begin
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c2:=lua_ToCEUserData(L, 3);
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SetPropValue(c, p, ptruint(c2));
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end;
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tkset: SetSetProp(c, pinfo, v);
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tkMethod: luacaller_setMethodProperty(L, c, p, pinfo.PropType.Name, 3);
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else SetPropValue(c, p, v)
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end;
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end;
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except
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end;
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end;
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lua_pop(L, lua_gettop(l));
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end;
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//6.2 only
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function getMethodProperty(L: PLua_state): integer; cdecl;
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var parameters: integer;
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c: tobject;
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p: string;
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pi: ppropinfo;
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m: TMethod;
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c2: tobject;
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begin
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result:=0;
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parameters:=lua_gettop(L);
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if parameters>=2 then
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begin
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if lua_isuserdata(L,1) then
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c:=lua_toceuserdata(L, 1)
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else
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if lua_isnumber(L,1) then
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c:=pointer(lua_tointeger(L,1))
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else
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begin
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p:=Lua_ToString(L,1);
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if p<>'' then
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c:=pointer(StrToInt64(p));
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end;
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p:=Lua_ToString(L,2);
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lua_pop(L, lua_gettop(L));
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m:=GetMethodProp(c,p);
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pi:=GetPropInfo(c,p);
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if (pi=nil) or (pi.proptype=nil) or (pi.PropType.Kind<>tkMethod) then
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begin
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raise exception.create('This is an invalid class or method property');
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end;
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if m.data<>nil then
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begin
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luaCaller_pushMethodProperty(L, m, pi.PropType.Name);
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result:=1;
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end
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else
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begin
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lua_pushnil(L);
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result:=1;
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end;
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end
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else
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lua_pop(L, lua_gettop(L));
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end;
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//6.2- only
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function setMethodProperty(L: PLua_state): integer; cdecl;
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var parameters: integer;
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c: tobject;
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p: string;
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pi: ppropinfo;
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lc: TLuaCaller;
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m: TMethod;
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begin
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result:=0;
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parameters:=lua_gettop(L);
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if parameters=3 then
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begin
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if lua_isuserdata(L,1) then
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c:=lua_toceuserdata(L, 1)
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else
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if lua_isnumber(L,1) then
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c:=pointer(lua_tointeger(L,1))
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else
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begin
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p:=Lua_ToString(L,1);
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if p<>'' then
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c:=pointer(StrToInt64(p));
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end;
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p:=Lua_ToString(L,2);
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lc:=TLuaCaller.create;
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if lua_isfunction(L, 3) then
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begin
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lua_pushvalue(L, 3);
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lc.luaroutineindex:=luaL_ref(L,LUA_REGISTRYINDEX)
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end
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else
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if lua_isnil(L,3) then
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begin
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//special case. nil the event
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lua_pop(L, lua_gettop(L));
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m.code:=nil;
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m.data:=nil;
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luacaller.setMethodProperty(c,p,m);
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exit;
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end
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else
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lc.luaroutine:=lua_tostring(L,3);
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lua_pop(L, lua_gettop(L));
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//look up the info of this property
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pi:=GetPropInfo(c,p);
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if (pi<>nil) and (pi.proptype<>nil) and (pi.PropType.Kind=tkMethod) then
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begin
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//it's a valid method property
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if pi.PropType.Name ='TNotifyEvent' then
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m:=tmethod(TNotifyEvent(lc.NotifyEvent))
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else
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if pi.PropType.Name ='TSelectionChangeEvent' then
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m:=tmethod(TSelectionChangeEvent(lc.SelectionChangeEvent))
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else
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if pi.PropType.Name ='TCloseEvent' then
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m:=tmethod(TCloseEvent(lc.CloseEvent))
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else
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if pi.PropType.Name ='TMouseEvent' then
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m:=tmethod(TMouseEvent(lc.MouseEvent()))
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else
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if pi.PropType.Name ='TMouseMoveEvent' then
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m:=tmethod(TMouseMoveEvent(lc.MouseMoveEvent))
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else
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if pi.PropType.Name ='TKeyPressEvent' then
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m:=tmethod(TKeyPressEvent(lc.KeyPressEvent))
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else
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if pi.PropType.Name ='TLVCheckedItemEvent' then
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m:=tmethod(TLVCheckedItemEvent(lc.LVCheckedItemEvent))
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else
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begin
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lc.free;
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raise exception.create('This type of method:'+pi.PropType.Name+' is not yet supported');
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end;
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luacaller.setMethodProperty(c,p,m);
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end
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else
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begin
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lc.free;
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raise exception.create('This is an invalid class or method property');
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end;
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end
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else
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lua_pop(L, lua_gettop(L));
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end;
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procedure InitializeLuaObject;
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begin
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lua_register(LuaVM, 'getPropertyList', getPropertyList);
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lua_register(LuaVM, 'setProperty', lua_setProperty);
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lua_register(LuaVM, 'getProperty', lua_getProperty);
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lua_register(LuaVM, 'setMethodProperty', setMethodProperty);
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lua_register(LuaVM, 'getMethodProperty', getMethodProperty);
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lua_register(LuaVM, 'object_getClassName', object_getClassName);
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lua_register(LuaVM, 'object_destroy', object_destroy);
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luaclass_register(TObject, object_addMetaData); //so it will ALWAYS find at least one thing
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end;
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end.
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