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- declared most native getters in Actor as const.

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- made the self pointer of const functions readonly.

This seems to work fine. Both calling a non-const function and trying to assign a value to a member fail with an error message.
This commit is contained in:
Christoph Oelckers 2017-03-04 12:43:07 +01:00
parent 4c5794b6d5
commit 7dbc6939c4
3 changed files with 31 additions and 21 deletions
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3
src/scripting/thingdef.cpp
View file

@ -110,12 +110,13 @@ void SetImplicitArgs(TArray<PType *> *args, TArray<DWORD> *argflags, TArray<FNam
if (funcflags & VARF_Method)
{
// implied self pointer
if (args != nullptr) args->Push(NewPointer(cls));
if (args != nullptr) args->Push(NewPointer(cls, !!(funcflags & VARF_ReadOnly)));
if (argflags != nullptr) argflags->Push(VARF_Implicit | VARF_ReadOnly);
if (argnames != nullptr) argnames->Push(NAME_self);
}
if (funcflags & VARF_Action)
{
assert(!(funcflags & VARF_ReadOnly));
// implied caller and callingstate pointers
if (args != nullptr)
{

9
src/scripting/zscript/zcc_compile.cpp
View file

@ -2156,6 +2156,15 @@ void ZCCCompiler::CompileFunction(ZCC_StructWork *c, ZCC_FuncDeclarator *f, bool
}
if (f->Flags & ZCC_Action)
{
if (varflags & VARF_ReadOnly)
{
Error(f, "Action functions cannot be declared const");
varflags &= ~VARF_ReadOnly;
}
if (varflags & VARF_UI)
{
Error(f, "Action functions cannot be declared UI");
}
// Non-Actors cannot have action functions.
if (!c->Type()->IsKindOf(RUNTIME_CLASS(PClassActor)))
{

40
wadsrc/static/zscript/actor.txt
View file

@ -468,15 +468,15 @@ class Actor : Thinker native
native bool UpdateWaterLevel (bool splash = true);
native bool IsZeroDamage();
native void ClearInterpolation();
native Vector3 PosRelative(sector sec);
native Vector3 PosRelative(sector sec) const;
native void HandleSpawnFlags();
native void ExplodeMissile(line lin = null, Actor target = null, bool onsky = false);
native void RestoreDamage();
native int SpawnHealth();
native int SpawnHealth() const;
native void SetDamage(int dmg);
native double Distance2D(Actor other);
native double Distance3D(Actor other);
native double Distance2D(Actor other) const;
native double Distance3D(Actor other) const;
native void SetOrigin(vector3 newpos, bool moving);
native void SetXYZ(vector3 newpos);
native Actor GetPointer(int aaptr);
@ -511,7 +511,7 @@ class Actor : Thinker native
native void BloodSplatter (Vector3 pos, double hitangle, bool axe = false);
native bool HitWater (sector sec, Vector3 pos, bool checkabove = false, bool alert = true, bool force = false);
native void PlaySpawnSound(Actor missile);
native bool CountsAsKill();
native bool CountsAsKill() const;
native bool Teleport(Vector3 pos, double angle, int flags);
native void TraceBleed(int damage, Actor missile);
@ -559,21 +559,21 @@ class Actor : Thinker native
native void LinkToWorld(LinkContext ctx = null);
native void UnlinkFromWorld(out LinkContext ctx = null);
native bool CanSeek(Actor target);
native double AngleTo(Actor target, bool absolute = false);
native double AngleTo(Actor target, bool absolute = false) const;
native void AddZ(double zadd, bool moving = true);
native void SetZ(double z);
native vector2 Vec2To(Actor other);
native vector3 Vec3To(Actor other);
native vector3 Vec3Offset(double x, double y, double z, bool absolute = false);
native vector3 Vec3Angle(double length, double angle, double z = 0, bool absolute = false);
native vector2 Vec2Angle(double length, double angle, bool absolute = false);
native vector2 Vec2Offset(double x, double y, bool absolute = false);
native vector3 Vec2OffsetZ(double x, double y, double atz, bool absolute = false);
native void VelFromAngle(double speed = 0, double angle = 0);
native void Vel3DFromAngle(double speed, double angle, double pitch);
native vector2 Vec2To(Actor other) const;
native vector3 Vec3To(Actor other) const;
native vector3 Vec3Offset(double x, double y, double z, bool absolute = false) const;
native vector3 Vec3Angle(double length, double angle, double z = 0, bool absolute = false) const;
native vector2 Vec2Angle(double length, double angle, bool absolute = false) const;
native vector2 Vec2Offset(double x, double y, bool absolute = false) const;
native vector3 Vec2OffsetZ(double x, double y, double atz, bool absolute = false) const;
native void VelFromAngle(double speed = 0, double angle = 0) const;
native void Vel3DFromAngle(double speed, double angle, double pitch) const;
native void Thrust(double speed = 0, double angle = 0);
native bool isFriend(Actor other);
native bool isHostile(Actor other);
native bool isFriend(Actor other) const;
native bool isHostile(Actor other) const;
native void AdjustFloorClip();
native DropItem GetDropItems();
native void CopyFriendliness (Actor other, bool changeTarget, bool resetHealth = true);
@ -588,8 +588,8 @@ class Actor : Thinker native
native void Howl();
native void DrawSplash (int count, double angle, int kind);
native void GiveSecret(bool printmsg = true, bool playsound = true);
native double GetCameraHeight();
native double GetGravity();
native double GetCameraHeight() const;
native double GetGravity() const;
native bool CheckClass(class<Actor> checkclass, int ptr_select = AAPTR_DEFAULT, bool match_superclass = false);
native void AddInventory(Inventory inv);
@ -613,7 +613,7 @@ class Actor : Thinker native
native double GetDistance(bool checkz, int ptr = AAPTR_TARGET);
native double GetAngle(int flags, int ptr = AAPTR_TARGET);
native double GetZAt(double px = 0, double py = 0, double angle = 0, int flags = 0, int pick_pointer = AAPTR_DEFAULT);
native int GetSpawnHealth();
native int GetSpawnHealth() const;
native double GetCrouchFactor(int ptr = AAPTR_PLAYER1);
native double GetCVar(string cvar);
native int GetPlayerInput(int inputnum, int ptr = AAPTR_DEFAULT);