Changeset 1315 for cpp

Timestamp:

07/11/24 17:26:06 (4 months ago)

Author:

Maciej Komosinski

Message:

Offset of fields within an object: replaced subtraction of pointers/addresses with the official offsetof()

Location:

cpp/frams/param

Files:

• param.cpp (modified) (6 diffs)
• param.h (modified) (5 diffs)

cpp/frams/param/param.cpp

@@ -1 +1 @@
 // This file is a part of Framsticks SDK.  http://www.framsticks.com/
-// Copyright (C) 1999-2022  Maciej Komosinski and Szymon Ulatowski.
+// Copyright (C) 1999-2024  Maciej Komosinski and Szymon Ulatowski.
 // See LICENSE.txt for details.
 
@@ -21 +21 @@
 #define SAVE_SELECTED_NAMES
 #define WARN_MISSING_NAME
-
-char MakeCodeGuardHappy;
 
 ParamEntry empty_paramtab[] =
@@ -559 +557 @@
         const char* fname = f->VgetPath();
         if (fname != NULL)
-                {
+        {
                 fileinfo = SString::sprintf(" while reading from '%s'", fname);
                 if (options.linenum)
                         fileinfo += SString::sprintf(" (line %d)", *options.linenum);
-                }
+        }
         return fileinfo;
 }
@@ -613 +611 @@
                         if (seen[i])
                         {
-                                SString fileinfo = getFileMessageFor(f,options);
+                                SString fileinfo = getFileMessageFor(f, options);
                                 logPrintf("ParamInterface", "load", LOG_WARN, "Multiple '%s.%s' properties found%s", getName(), id(i), fileinfo.c_str());
                         }
@@ -622 +620 @@
                                 if (p0[p_len + 1] == '~')
                                 {
-                                        if (p0[p_len+2])
+                                        if (p0[p_len + 2])
                                         {
-                                                SString fileinfo = getFileMessageFor(f,options);
-                                                logPrintf("ParamInterface", "load", LOG_WARN, "Ignored unexpected characters after '~': '%s' in '%s:'%s", p0+p_len+1, id(i), fileinfo.c_str());
+                                                SString fileinfo = getFileMessageFor(f, options);
+                                                logPrintf("ParamInterface", "load", LOG_WARN, "Ignored unexpected characters after '~': '%s' in '%s:'%s", p0 + p_len + 1, id(i), fileinfo.c_str());
                                         }
-                                
+
                                         SString s;
                                         if (!readUntilTilde(f, s))
@@ -939 +937 @@
         {
         case 'd': t += "integer";
-        {paInt a, b, c; int n = getMinMaxIntFromTypeDef(type, a, b, c); if ((n >= 2) && (b >= a)) t += SString::sprintf(" %d..%d", a, b); if (n >= 3) t += SString::sprintf(" (default %d)", c); }
+        { paInt a, b, c; int n = getMinMaxIntFromTypeDef(type, a, b, c); if ((n >= 2) && (b >= a)) t += SString::sprintf(" %d..%d", a, b); if (n >= 3) t += SString::sprintf(" (default %d)", c); }
         break;
         case 'f': t += "float";
-        {double a, b, c; int n = getMinMaxDoubleFromTypeDef(type, a, b, c); if ((n >= 2) && (b >= a)) t += SString::sprintf(" %g..%g", a, b); if (n >= 3) t += SString::sprintf(" (default %g)", c); }
+        { double a, b, c; int n = getMinMaxDoubleFromTypeDef(type, a, b, c); if ((n >= 2) && (b >= a)) t += SString::sprintf(" %g..%g", a, b); if (n >= 3) t += SString::sprintf(" (default %g)", c); }
         break;
         case 's': t += "string";
-        {int a, b; SString c; int n = getMinMaxStringFromTypeDef(type, a, b, c); if ((n >= 2) && (b > 0)) t += SString::sprintf(", max %d chars", b); if (n >= 3) t += SString::sprintf(" (default \"%s\")", c.c_str()); }
+        { int a, b; SString c; int n = getMinMaxStringFromTypeDef(type, a, b, c); if ((n >= 2) && (b > 0)) t += SString::sprintf(", max %d chars", b); if (n >= 3) t += SString::sprintf(" (default \"%s\")", c.c_str()); }
         break;
         case 'x': t += "untyped value"; break;

cpp/frams/param/param.h

@@ -1 +1 @@
 // This file is a part of Framsticks SDK.  http://www.framsticks.com/
-// Copyright (C) 1999-2022  Maciej Komosinski and Szymon Ulatowski.
+// Copyright (C) 1999-2024  Maciej Komosinski and Szymon Ulatowski.
 // See LICENSE.txt for details.
 
@@ -216 +216 @@
 // implementations:
 
-extern char MakeCodeGuardHappy;
-
 #define PROCOFFSET(_proc_) ( (void (*)(void*,ExtValue*,ExtValue*)) &(FIELDSTRUCT :: _proc_ ## _statrick))
 #define STATICPROCOFFSET(_proc_) ( (void (*)(void*,ExtValue*,ExtValue*)) &(FIELDSTRUCT :: _proc_))
@@ -223 +221 @@
 #define SETOFFSET(_proc_) ( (int (*)(void*,const ExtValue*)) &(FIELDSTRUCT :: _proc_ ## _statrick))
 
-#define FIELDOFFSET(_fld_) ((intptr_t)((char*)(&((FIELDSTRUCT*)&MakeCodeGuardHappy)->_fld_)-((char*)((FIELDSTRUCT*)&MakeCodeGuardHappy))))
+#define FIELDOFFSET(_fld_) ((intptr_t)offsetof(FIELDSTRUCT, _fld_)) // https://stackoverflow.com/questions/177885/looking-for-something-similar-to-offsetof-for-non-pod-types , https://stackoverflow.com/questions/713963/why-does-this-implementation-of-offsetof-work
 
 #ifdef _DEBUG
@@ -349 +347 @@
 
 #ifdef CHECK_PARAMENTRY_COUNT
-        
+
         template <int COUNT>
-        Param(ParamEntry (&t)[COUNT],void* o = 0, const char*n = 0) :SimpleAbstractParam(o, n), tab(t)
+        Param(ParamEntry(&t)[COUNT], void* o = 0, const char*n = 0) :SimpleAbstractParam(o, n), tab(t)
         {
-                if (!n&&tab) myname = tab[0].name;
+                if (!n && tab) myname = tab[0].name;
                 //printf("Param(ParamEntry t[%d]) %s\n",COUNT,myname?myname:"unknown name");
                 if (tab)
-                        {
-                        int in_array = COUNT-1-tab[0].group;
+                {
+                        int in_array = COUNT - 1 - tab[0].group;
                         if (tab[0].flags != in_array)
-                                printf("\nCHECK_PARAMENTRY_COUNT: %d items in ParamEntry[] array, declared %d (%s)\n\n",in_array, tab[0].flags, myname?myname:"unknown name");
-                        if (in_array>0 && tab[COUNT-1].id != NULL) //in_array>0 -> completely empty paramtab can't end with the usual zero row because that's also its first row
-                                printf("\nCHECK_PARAMENTRY_COUNT: last entry is not null (%s)\n\n",myname?myname:"unknown name");
-                        }
+                                printf("\nCHECK_PARAMENTRY_COUNT: %d items in ParamEntry[] array, declared %d (%s)\n\n", in_array, tab[0].flags, myname ? myname : "unknown name");
+                        if (in_array > 0 && tab[COUNT - 1].id != NULL) //in_array>0 -> completely empty paramtab can't end with the usual zero row because that's also its first row
+                                printf("\nCHECK_PARAMENTRY_COUNT: last entry is not null (%s)\n\n", myname ? myname : "unknown name");
+                }
         }
 
-        template<typename T, typename std::enable_if_t<std::is_same<ParamEntry*,T>::value>* = nullptr > //SFINAE-fu because the normal ParamEntry* overload would be also called for ParamEntry[COUNT] argument
+        template<typename T, typename std::enable_if_t<std::is_same<ParamEntry*, T>::value>* = nullptr > //SFINAE-fu because the normal ParamEntry* overload would be also called for ParamEntry[COUNT] argument
         Param(T t, void* o = 0, const char*n = 0) :SimpleAbstractParam(o, n), tab(t)
         {
                 //printf("Param(ParamEntry* t) %s\n",tab?tab[0].name:"");
-                if (!n&&tab) myname = tab[0].name;
+                if (!n && tab) myname = tab[0].name;
         }
 
@@ -378 +376 @@
 
 #else // CHECK_PARAMENTRY_COUNT
-        
-        Param(ParamEntry *t = 0, void* o = 0, const char*n = 0) :SimpleAbstractParam(o, n), tab(t)
+
+        Param(ParamEntry *t = 0, void* o = 0, const char*n = 0) : SimpleAbstractParam(o, n), tab(t)
         {
-                if (!n&&tab) myname = tab[0].name;
+                if (!n && tab) myname = tab[0].name;
         }
-        
+
 #endif // CHECK_PARAMENTRY_COUNT
-        
+
         Param(const Param& p) :SimpleAbstractParam(p.object, p.myname), tab(p.tab) {}
         void operator=(const Param&p) { object = p.object; myname = p.myname; tab = p.tab; }