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gzdoom-gles/src/dobjtype.cpp
Christoph Oelckers 3fd0d27efa - removed some leftover fixed point handling from PType.
2016-04-27 15:35:01 +02:00

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/*
** dobjtype.cpp
** Implements the type information class
**
**---------------------------------------------------------------------------
** Copyright 1998-2010 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
// HEADER FILES ------------------------------------------------------------
#include <float.h>
#include <limits>
#include "dobject.h"
#include "i_system.h"
#include "farchive.h"
#include "actor.h"
#include "templates.h"
#include "autosegs.h"
#include "v_text.h"
#include "a_pickups.h"
#include "a_weaponpiece.h"
#include "d_player.h"
#include "fragglescript/t_fs.h"
// MACROS ------------------------------------------------------------------
// TYPES -------------------------------------------------------------------
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PUBLIC DATA DEFINITIONS -------------------------------------------------
FTypeTable TypeTable;
PSymbolTable GlobalSymbols;
TArray<PClass *> PClass::AllClasses;
bool PClass::bShutdown;
PErrorType *TypeError;
PVoidType *TypeVoid;
PInt *TypeSInt8, *TypeUInt8;
PInt *TypeSInt16, *TypeUInt16;
PInt *TypeSInt32, *TypeUInt32;
PBool *TypeBool;
PFloat *TypeFloat32, *TypeFloat64;
PString *TypeString;
PName *TypeName;
PSound *TypeSound;
PColor *TypeColor;
PStatePointer *TypeState;
// PRIVATE DATA DEFINITIONS ------------------------------------------------
// A harmless non-NULL FlatPointer for classes without pointers.
static const size_t TheEnd = ~(size_t)0;
// CODE --------------------------------------------------------------------
IMPLEMENT_CLASS(PErrorType)
IMPLEMENT_CLASS(PVoidType)
void DumpTypeTable()
{
int used = 0;
int min = INT_MAX;
int max = 0;
int all = 0;
int lens[10] = {0};
for (size_t i = 0; i < countof(TypeTable.TypeHash); ++i)
{
int len = 0;
Printf("%4zu:", i);
for (PType *ty = TypeTable.TypeHash[i]; ty != NULL; ty = ty->HashNext)
{
Printf(" -> %s", ty->IsKindOf(RUNTIME_CLASS(PNamedType)) ? static_cast<PNamedType*>(ty)->TypeName.GetChars(): ty->GetClass()->TypeName.GetChars());
len++;
all++;
}
if (len != 0)
{
used++;
if (len < min)
min = len;
if (len > max)
max = len;
}
if (len < (int)countof(lens))
{
lens[len]++;
}
Printf("\n");
}
Printf("Used buckets: %d/%lu (%.2f%%) for %d entries\n", used, countof(TypeTable.TypeHash), double(used)/countof(TypeTable.TypeHash)*100, all);
Printf("Min bucket size: %d\n", min);
Printf("Max bucket size: %d\n", max);
Printf("Avg bucket size: %.2f\n", double(all) / used);
int j,k;
for (k = countof(lens)-1; k > 0; --k)
if (lens[k])
break;
for (j = 0; j <= k; ++j)
Printf("Buckets of len %d: %d (%.2f%%)\n", j, lens[j], j!=0?double(lens[j])/used*100:-1.0);
}
/* PClassType *************************************************************/
IMPLEMENT_CLASS(PClassType)
//==========================================================================
//
// PClassType Constructor
//
//==========================================================================
PClassType::PClassType()
: TypeTableType(NULL)
{
}
//==========================================================================
//
// PClassType :: Derive
//
//==========================================================================
void PClassType::Derive(PClass *newclass)
{
assert(newclass->IsKindOf(RUNTIME_CLASS(PClassType)));
Super::Derive(newclass);
static_cast<PClassType *>(newclass)->TypeTableType = TypeTableType;
}
/* PClassClass ************************************************************/
IMPLEMENT_CLASS(PClassClass)
//==========================================================================
//
// PClassClass Constructor
//
// The only thing we want to do here is automatically set TypeTableType
// to PClass.
//
//==========================================================================
PClassClass::PClassClass()
{
TypeTableType = RUNTIME_CLASS(PClass);
}
/* PType ******************************************************************/
IMPLEMENT_ABSTRACT_POINTY_CLASS(PType)
DECLARE_POINTER(HashNext)
END_POINTERS
//==========================================================================
//
// PType Default Constructor
//
//==========================================================================
PType::PType()
: Size(0), Align(1), HashNext(NULL)
{
}
//==========================================================================
//
// PType Parameterized Constructor
//
//==========================================================================
PType::PType(unsigned int size, unsigned int align)
: Size(size), Align(align), HashNext(NULL)
{
}
//==========================================================================
//
// PType Destructor
//
//==========================================================================
PType::~PType()
{
}
//==========================================================================
//
// PType :: PropagateMark
//
//==========================================================================
size_t PType::PropagateMark()
{
size_t marked = Symbols.MarkSymbols();
return marked + Super::PropagateMark();
}
//==========================================================================
//
// PType :: AddConversion
//
//==========================================================================
bool PType::AddConversion(PType *target, void (*convertconst)(ZCC_ExprConstant *, class FSharedStringArena &))
{
// Make sure a conversion hasn't already been registered
for (unsigned i = 0; i < Conversions.Size(); ++i)
{
if (Conversions[i].TargetType == target)
return false;
}
Conversions.Push(Conversion(target, convertconst));
return true;
}
//==========================================================================
//
// PType :: FindConversion
//
// Returns <0 if there is no path to target. Otherwise, returns the distance
// to target and fills slots (if non-NULL) with the necessary conversions
// to get there. A result of 0 means this is the target.
//
//==========================================================================
int PType::FindConversion(PType *target, const PType::Conversion **slots, int numslots)
{
if (this == target)
{
return 0;
}
// The queue is implemented as a ring buffer
VisitQueue queue;
VisitedNodeSet visited;
// Use a breadth-first search to find the shortest path to the target.
MarkPred(NULL, -1, -1);
queue.Push(this);
visited.Insert(this);
while (!queue.IsEmpty())
{
PType *t = queue.Pop();
if (t == target)
{ // found it
if (slots != NULL)
{
if (t->Distance >= numslots)
{ // Distance is too far for the output
return -2;
}
t->FillConversionPath(slots);
}
return t->Distance + 1;
}
for (unsigned i = 0; i < t->Conversions.Size(); ++i)
{
PType *succ = t->Conversions[i].TargetType;
if (!visited.Check(succ))
{
succ->MarkPred(t, i, t->Distance + 1);
visited.Insert(succ);
queue.Push(succ);
}
}
}
return -1;
}
//==========================================================================
//
// PType :: FillConversionPath
//
// Traces backwards from the target type to the original type and fills in
// the conversions necessary to get between them. slots must point to an
// array large enough to contain the entire path.
//
//==========================================================================
void PType::FillConversionPath(const PType::Conversion **slots)
{
for (PType *node = this; node->Distance >= 0; node = node->PredType)
{
assert(node->PredType != NULL);
slots[node->Distance] = &node->PredType->Conversions[node->PredConv];
}
}
//==========================================================================
//
// PType :: VisitQueue :: Push
//
//==========================================================================
void PType::VisitQueue::Push(PType *type)
{
Queue[In] = type;
Advance(In);
assert(!IsEmpty() && "Queue overflowed");
}
//==========================================================================
//
// PType :: VisitQueue :: Pop
//
//==========================================================================
PType *PType::VisitQueue::Pop()
{
if (IsEmpty())
{
return NULL;
}
PType *node = Queue[Out];
Advance(Out);
return node;
}
//==========================================================================
//
// PType :: VisitedNodeSet :: Insert
//
//==========================================================================
void PType::VisitedNodeSet::Insert(PType *node)
{
assert(!Check(node) && "Node was already inserted");
size_t buck = Hash(node) & (countof(Buckets) - 1);
node->VisitNext = Buckets[buck];
Buckets[buck] = node;
}
//==========================================================================
//
// PType :: VisitedNodeSet :: Check
//
//==========================================================================
bool PType::VisitedNodeSet::Check(const PType *node)
{
size_t buck = Hash(node) & (countof(Buckets) - 1);
for (const PType *probe = Buckets[buck]; probe != NULL; probe = probe->VisitNext)
{
if (probe == node)
{
return true;
}
}
return false;
}
//==========================================================================
//
// PType :: WriteValue
//
//==========================================================================
void PType::WriteValue(FArchive &ar, const void *addr) const
{
assert(0 && "Cannot write value for this type");
}
//==========================================================================
//
// PType :: ReadValue
//
//==========================================================================
bool PType::ReadValue(FArchive &ar, void *addr) const
{
assert(0 && "Cannot read value for this type");
SkipValue(ar);
return false;
}
//==========================================================================
//
// PType :: SkipValue STATIC
//
//==========================================================================
void PType::SkipValue(FArchive &ar)
{
BYTE tag;
ar << tag;
SkipValue(ar, tag);
}
void PType::SkipValue(FArchive &ar, int tag)
{
assert(ar.IsLoading() && "SkipValue passed an archive that is writing");
BYTE buff[8];
switch (tag)
{
case VAL_Zero: case VAL_One:
break;
case VAL_Int8: case VAL_UInt8:
ar.Read(buff, 1);
break;
case VAL_Int16: case VAL_UInt16:
ar.Read(buff, 2);
break;
case VAL_Int32: case VAL_UInt32: case VAL_Float32:
ar.Read(buff, 4);
break;
case VAL_Int64: case VAL_UInt64: case VAL_Float64:
ar.Read(buff, 8);
break;
case VAL_Name:
ar.ReadName();
break;
case VAL_Object:
{
DObject *skipper;
ar << skipper;
break;
}
case VAL_State:
{
FState *skipper;
ar << skipper;
break;
}
case VAL_String:
{
FString skipper;
ar << skipper;
break;
}
case VAL_Array:
{
DWORD count = ar.ReadCount();
while (count-- > 0)
{
SkipValue(ar);
}
break;
}
case VAL_Struct:
{
const char *label;
for (label = ar.ReadName(); label != NULL; label = ar.ReadName())
{
SkipValue(ar);
}
break;
}
case VAL_Class:
{
PClass *type;
for (ar.UserReadClass(type); type != NULL; ar.UserReadClass(type))
{
SkipValue(ar, VAL_Struct);
}
break;
}
}
}
//==========================================================================
//
// PType :: SetDefaultValue
//
//==========================================================================
void PType::SetDefaultValue(void *base, unsigned offset, TArray<FTypeAndOffset> *stroffs) const
{
}
//==========================================================================
//
// PType :: InitializeValue
//
//==========================================================================
void PType::InitializeValue(void *addr, const void *def) const
{
}
//==========================================================================
//
// PType :: DestroyValue
//
//==========================================================================
void PType::DestroyValue(void *addr) const
{
}
//==========================================================================
//
// PType :: SetValue
//
//==========================================================================
void PType::SetValue(void *addr, int val)
{
assert(0 && "Cannot set int value for this type");
}
void PType::SetValue(void *addr, double val)
{
assert(0 && "Cannot set float value for this type");
}
//==========================================================================
//
// PType :: GetValue
//
//==========================================================================
int PType::GetValueInt(void *addr) const
{
assert(0 && "Cannot get value for this type");
return 0;
}
double PType::GetValueFloat(void *addr) const
{
assert(0 && "Cannot get value for this type");
return 0;
}
//==========================================================================
//
// PType :: GetStoreOp
//
//==========================================================================
int PType::GetStoreOp() const
{
assert(0 && "Cannot store this type");
return OP_NOP;
}
//==========================================================================
//
// PType :: GetLoadOp
//
//==========================================================================
int PType::GetLoadOp() const
{
assert(0 && "Cannot load this type");
return OP_NOP;
}
//==========================================================================
//
// PType :: GetRegType
//
//==========================================================================
int PType::GetRegType() const
{
assert(0 && "No register for this type");
return REGT_NIL;
}
//==========================================================================
//
// PType :: IsMatch
//
//==========================================================================
bool PType::IsMatch(intptr_t id1, intptr_t id2) const
{
return false;
}
//==========================================================================
//
// PType :: GetTypeIDs
//
//==========================================================================
void PType::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = 0;
id2 = 0;
}
//==========================================================================
//
// PType :: StaticInit STATIC
//
// Set up TypeTableType values for every PType child and create basic types.
//
//==========================================================================
void ReleaseGlobalSymbols()
{
TypeTable.Clear();
GlobalSymbols.ReleaseSymbols();
}
void PType::StaticInit()
{
// Add types to the global symbol table.
atterm(ReleaseGlobalSymbols);
// Set up TypeTable hash keys.
RUNTIME_CLASS(PErrorType)->TypeTableType = RUNTIME_CLASS(PErrorType);
RUNTIME_CLASS(PVoidType)->TypeTableType = RUNTIME_CLASS(PVoidType);
RUNTIME_CLASS(PInt)->TypeTableType = RUNTIME_CLASS(PInt);
RUNTIME_CLASS(PBool)->TypeTableType = RUNTIME_CLASS(PBool);
RUNTIME_CLASS(PFloat)->TypeTableType = RUNTIME_CLASS(PFloat);
RUNTIME_CLASS(PString)->TypeTableType = RUNTIME_CLASS(PString);
RUNTIME_CLASS(PName)->TypeTableType = RUNTIME_CLASS(PName);
RUNTIME_CLASS(PSound)->TypeTableType = RUNTIME_CLASS(PSound);
RUNTIME_CLASS(PColor)->TypeTableType = RUNTIME_CLASS(PColor);
RUNTIME_CLASS(PPointer)->TypeTableType = RUNTIME_CLASS(PPointer);
RUNTIME_CLASS(PClassPointer)->TypeTableType = RUNTIME_CLASS(PClassPointer);
RUNTIME_CLASS(PEnum)->TypeTableType = RUNTIME_CLASS(PEnum);
RUNTIME_CLASS(PArray)->TypeTableType = RUNTIME_CLASS(PArray);
RUNTIME_CLASS(PDynArray)->TypeTableType = RUNTIME_CLASS(PDynArray);
RUNTIME_CLASS(PVector)->TypeTableType = RUNTIME_CLASS(PVector);
RUNTIME_CLASS(PMap)->TypeTableType = RUNTIME_CLASS(PMap);
RUNTIME_CLASS(PStruct)->TypeTableType = RUNTIME_CLASS(PStruct);
RUNTIME_CLASS(PPrototype)->TypeTableType = RUNTIME_CLASS(PPrototype);
RUNTIME_CLASS(PClass)->TypeTableType = RUNTIME_CLASS(PClass);
RUNTIME_CLASS(PStatePointer)->TypeTableType = RUNTIME_CLASS(PStatePointer);
// Create types and add them type the type table.
TypeTable.AddType(TypeError = new PErrorType);
TypeTable.AddType(TypeVoid = new PVoidType);
TypeTable.AddType(TypeSInt8 = new PInt(1, false));
TypeTable.AddType(TypeUInt8 = new PInt(1, true));
TypeTable.AddType(TypeSInt16 = new PInt(2, false));
TypeTable.AddType(TypeUInt16 = new PInt(2, true));
TypeTable.AddType(TypeSInt32 = new PInt(4, false));
TypeTable.AddType(TypeUInt32 = new PInt(4, true));
TypeTable.AddType(TypeBool = new PBool);
TypeTable.AddType(TypeFloat32 = new PFloat(4));
TypeTable.AddType(TypeFloat64 = new PFloat(8));
TypeTable.AddType(TypeString = new PString);
TypeTable.AddType(TypeName = new PName);
TypeTable.AddType(TypeSound = new PSound);
TypeTable.AddType(TypeColor = new PColor);
TypeTable.AddType(TypeState = new PStatePointer);
GlobalSymbols.AddSymbol(new PSymbolType(NAME_sByte, TypeSInt8));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Byte, TypeUInt8));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Short, TypeSInt16));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_uShort, TypeUInt16));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Int, TypeSInt32));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_uInt, TypeUInt32));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Bool, TypeBool));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Float, TypeFloat64));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Double, TypeFloat64));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Float32, TypeFloat32));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Float64, TypeFloat64));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_String, TypeString));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Name, TypeName));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Sound, TypeSound));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_Color, TypeColor));
GlobalSymbols.AddSymbol(new PSymbolType(NAME_State, TypeState));
}
/* PBasicType *************************************************************/
IMPLEMENT_ABSTRACT_CLASS(PBasicType)
//==========================================================================
//
// PBasicType Default Constructor
//
//==========================================================================
PBasicType::PBasicType()
{
}
//==========================================================================
//
// PBasicType Parameterized Constructor
//
//==========================================================================
PBasicType::PBasicType(unsigned int size, unsigned int align)
: PType(size, align)
{
}
/* PCompoundType **********************************************************/
IMPLEMENT_ABSTRACT_CLASS(PCompoundType)
/* PNamedType *************************************************************/
IMPLEMENT_ABSTRACT_POINTY_CLASS(PNamedType)
DECLARE_POINTER(Outer)
END_POINTERS
//==========================================================================
//
// PNamedType :: IsMatch
//
//==========================================================================
bool PNamedType::IsMatch(intptr_t id1, intptr_t id2) const
{
const DObject *outer = (const DObject *)id1;
FName name = (ENamedName)(intptr_t)id2;
return Outer == outer && TypeName == name;
}
//==========================================================================
//
// PNamedType :: GetTypeIDs
//
//==========================================================================
void PNamedType::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = (intptr_t)Outer;
id2 = TypeName;
}
/* PInt *******************************************************************/
IMPLEMENT_CLASS(PInt)
//==========================================================================
//
// PInt Default Constructor
//
//==========================================================================
PInt::PInt()
: PBasicType(4, 4), Unsigned(false)
{
Symbols.AddSymbol(new PSymbolConstNumeric(NAME_Min, this, -0x7FFFFFFF - 1));
Symbols.AddSymbol(new PSymbolConstNumeric(NAME_Max, this, 0x7FFFFFFF));
}
//==========================================================================
//
// PInt Parameterized Constructor
//
//==========================================================================
PInt::PInt(unsigned int size, bool unsign)
: PBasicType(size, size), Unsigned(unsign)
{
if (!unsign)
{
int maxval = (1 << ((8 * size) - 1)) - 1;
int minval = -maxval - 1;
Symbols.AddSymbol(new PSymbolConstNumeric(NAME_Min, this, minval));
Symbols.AddSymbol(new PSymbolConstNumeric(NAME_Max, this, maxval));
}
else
{
Symbols.AddSymbol(new PSymbolConstNumeric(NAME_Min, this, 0u));
Symbols.AddSymbol(new PSymbolConstNumeric(NAME_Max, this, (1u << (8 * size)) - 1));
}
}
//==========================================================================
//
// PInt :: WriteValue
//
// Write the value using the minimum byte size needed to represent it. This
// means that the value as written is not necessarily of the same type as
// stored, but the signedness information is preserved.
//
//==========================================================================
void PInt::WriteValue(FArchive &ar, const void *addr) const
{
BYTE bval;
// The process for bytes is the same whether signed or unsigned, since
// they can't be compacted into a representation with fewer bytes.
if (Size == 1)
{
bval = *(BYTE *)addr;
}
else if (Unsigned)
{
unsigned val;
if (Size == 8)
{
QWORD qval = *(QWORD *)addr;
if (qval & 0xFFFFFFFF00000000llu)
{ // Value needs 64 bits
ar.WriteByte(VAL_UInt64);
ar.WriteInt64(qval);
return;
}
// Value can fit in 32 bits or less
val = (unsigned)qval;
goto check_u32;
}
else if (Size == 4)
{
val = *(DWORD *)addr;
check_u32: if (val & 0xFFFF0000u)
{ // Value needs 32 bits
ar.WriteByte(VAL_UInt32);
ar.WriteInt32(val);
return;
}
// Value can fit in 16 bits or less
goto check_u16;
}
else// if (Size == 2)
{
val = *(WORD *)addr;
check_u16: if (val & 0xFFFFFF00u)
{ // Value needs 16 bits
ar.WriteByte(VAL_UInt16);
ar.WriteInt16(val);
return;
}
// Value can fit in 8 bits
bval = (BYTE)val;
}
}
else // Signed
{
int val;
if (Size == 8)
{
SQWORD qval = *(SQWORD *)addr;
INT_MIN;
if (qval < (-0x7FFFFFFF - 1) || qval > 0x7FFFFFFF)
{ // Value needs 64 bits
ar.WriteByte(VAL_Int64);
ar.WriteInt64(qval);
return;
}
// Value can fit in 32 bits or less
val = (int)qval;
goto check_s32;
}
else if (Size == 4)
{
val = *(SDWORD *)addr;
check_s32: if (val < -0x8000 || val > 0x7FFF)
{ // Value needs 32 bits
ar.WriteByte(VAL_Int32);
ar.WriteInt32(val);
return;
}
// Value can fit in 16 bits or less
goto check_s16;
}
else// if (Size == 2)
{
val = *(SWORD *)addr;
check_s16: if (val < -0x80 || val > 0x7F)
{ // Value needs 16 bits
ar.WriteByte(VAL_Int16);
ar.WriteInt16(val);
return;
}
// Value can fit in 8 bits
bval = (BYTE)val;
}
}
// If we get here, the value fits in a byte. Values of 0 and 1 are
// optimized away into the tag so they don't require any extra space
// to store.
if (bval & 0xFE)
{
BYTE out[2] = { Unsigned ? VAL_UInt8 : VAL_Int8, bval };
ar.Write(out, 2);
}
else
{
ar.WriteByte(VAL_Zero + bval);
}
}
//==========================================================================
//
// PInt :: ReadValue
//
//==========================================================================
bool PInt::ReadValue(FArchive &ar, void *addr) const
{
union
{
QWORD uval;
SQWORD sval;
};
BYTE tag;
union
{
BYTE val8;
WORD val16;
DWORD val32;
float single;
double dbl;
};
ar << tag;
switch (tag)
{
case VAL_Zero: uval = 0; break;
case VAL_One: uval = 1; break;
case VAL_Int8: ar << val8; sval = (SBYTE)val8; break;
case VAL_UInt8: ar << val8; uval = val8; break;
case VAL_Int16: ar << val16; sval = (SWORD)val16; break;
case VAL_UInt16: ar << val16; uval = val16; break;
case VAL_Int32: ar << val32; sval = (SDWORD)val32; break;
case VAL_UInt32: ar << val32; uval = val32; break;
case VAL_Int64: ar << sval; break;
case VAL_UInt64: ar << uval; break;
case VAL_Float32: ar << single; sval = (SQWORD)single; break;
case VAL_Float64: ar << dbl; sval = (SQWORD)dbl; break;
default: SkipValue(ar, tag); return false; // Incompatible type
}
switch (Size)
{
case 1: *(BYTE *)addr = (BYTE)uval; break;
case 2: *(WORD *)addr = (WORD)uval; break;
case 4: *(DWORD *)addr = (DWORD)uval; break;
case 8: *(QWORD *)addr = uval; break;
}
return true;
}
//==========================================================================
//
// PInt :: SetValue
//
//==========================================================================
void PInt::SetValue(void *addr, int val)
{
assert(((intptr_t)addr & (Align - 1)) == 0 && "unaligned address");
if (Size == 4)
{
*(int *)addr = val;
}
else if (Size == 1)
{
*(BYTE *)addr = val;
}
else if (Size == 2)
{
*(WORD *)addr = val;
}
else if (Size == 8)
{
*(QWORD *)addr = val;
}
else
{
assert(0 && "Unhandled integer size");
}
}
void PInt::SetValue(void *addr, double val)
{
SetValue(addr, (int)val);
}
//==========================================================================
//
// PInt :: GetValueInt
//
//==========================================================================
int PInt::GetValueInt(void *addr) const
{
assert(((intptr_t)addr & (Align - 1)) == 0 && "unaligned address");
if (Size == 4)
{
return *(int *)addr;
}
else if (Size == 1)
{
return Unsigned ? *(BYTE *)addr : *(SBYTE *)addr;
}
else if (Size == 2)
{
return Unsigned ? *(WORD *)addr : *(SWORD *)addr;
}
else if (Size == 8)
{ // truncated output
return (int)*(QWORD *)addr;
}
else
{
assert(0 && "Unhandled integer size");
return 0;
}
}
//==========================================================================
//
// PInt :: GetValueFloat
//
//==========================================================================
double PInt::GetValueFloat(void *addr) const
{
return GetValueInt(addr);
}
//==========================================================================
//
// PInt :: GetStoreOp
//
//==========================================================================
int PInt::GetStoreOp() const
{
if (Size == 4)
{
return OP_SW;
}
else if (Size == 1)
{
return OP_SB;
}
else if (Size == 2)
{
return OP_SH;
}
else
{
assert(0 && "Unhandled integer size");
return OP_NOP;
}
}
//==========================================================================
//
// PInt :: GetLoadOp
//
//==========================================================================
int PInt::GetLoadOp() const
{
if (Size == 4)
{
return OP_LW;
}
else if (Size == 1)
{
return Unsigned ? OP_LBU : OP_LB;
}
else if (Size == 2)
{
return Unsigned ? OP_LHU : OP_LH;
}
else
{
assert(0 && "Unhandled integer size");
return OP_NOP;
}
}
//==========================================================================
//
// PInt :: GetRegType
//
//==========================================================================
int PInt::GetRegType() const
{
return REGT_INT;
}
/* PBool ******************************************************************/
IMPLEMENT_CLASS(PBool)
//==========================================================================
//
// PBool Default Constructor
//
//==========================================================================
PBool::PBool()
: PInt(sizeof(bool), true)
{
// Override the default max set by PInt's constructor
PSymbolConstNumeric *maxsym = static_cast<PSymbolConstNumeric *>(Symbols.FindSymbol(NAME_Max, false));
assert(maxsym != NULL && maxsym->IsKindOf(RUNTIME_CLASS(PSymbolConstNumeric)));
maxsym->Value = 1;
}
/* PFloat *****************************************************************/
IMPLEMENT_CLASS(PFloat)
//==========================================================================
//
// PFloat Default Constructor
//
//==========================================================================
PFloat::PFloat()
: PBasicType(8, 8)
{
SetDoubleSymbols();
}
//==========================================================================
//
// PFloat Parameterized Constructor
//
//==========================================================================
PFloat::PFloat(unsigned int size)
: PBasicType(size, size)
{
if (size == 8)
{
SetDoubleSymbols();
}
else
{
assert(size == 4);
SetSingleSymbols();
}
}
//==========================================================================
//
// PFloat :: SetDoubleSymbols
//
// Setup constant values for 64-bit floats.
//
//==========================================================================
void PFloat::SetDoubleSymbols()
{
static const SymbolInitF symf[] =
{
{ NAME_Min_Normal, DBL_MIN },
{ NAME_Max, DBL_MAX },
{ NAME_Epsilon, DBL_EPSILON },
{ NAME_NaN, std::numeric_limits<double>::quiet_NaN() },
{ NAME_Infinity, std::numeric_limits<double>::infinity() },
{ NAME_Min_Denormal, std::numeric_limits<double>::denorm_min() }
};
static const SymbolInitI symi[] =
{
{ NAME_Dig, DBL_DIG },
{ NAME_Min_Exp, DBL_MIN_EXP },
{ NAME_Max_Exp, DBL_MAX_EXP },
{ NAME_Mant_Dig, DBL_MANT_DIG },
{ NAME_Min_10_Exp, DBL_MIN_10_EXP },
{ NAME_Max_10_Exp, DBL_MAX_10_EXP }
};
SetSymbols(symf, countof(symf));
SetSymbols(symi, countof(symi));
}
//==========================================================================
//
// PFloat :: SetSingleSymbols
//
// Setup constant values for 32-bit floats.
//
//==========================================================================
void PFloat::SetSingleSymbols()
{
static const SymbolInitF symf[] =
{
{ NAME_Min_Normal, FLT_MIN },
{ NAME_Max, FLT_MAX },
{ NAME_Epsilon, FLT_EPSILON },
{ NAME_NaN, std::numeric_limits<float>::quiet_NaN() },
{ NAME_Infinity, std::numeric_limits<float>::infinity() },
{ NAME_Min_Denormal, std::numeric_limits<float>::denorm_min() }
};
static const SymbolInitI symi[] =
{
{ NAME_Dig, FLT_DIG },
{ NAME_Min_Exp, FLT_MIN_EXP },
{ NAME_Max_Exp, FLT_MAX_EXP },
{ NAME_Mant_Dig, FLT_MANT_DIG },
{ NAME_Min_10_Exp, FLT_MIN_10_EXP },
{ NAME_Max_10_Exp, FLT_MAX_10_EXP }
};
SetSymbols(symf, countof(symf));
SetSymbols(symi, countof(symi));
}
//==========================================================================
//
// PFloat :: SetSymbols
//
//==========================================================================
void PFloat::SetSymbols(const PFloat::SymbolInitF *sym, size_t count)
{
for (size_t i = 0; i < count; ++i)
{
Symbols.AddSymbol(new PSymbolConstNumeric(sym[i].Name, this, sym[i].Value));
}
}
void PFloat::SetSymbols(const PFloat::SymbolInitI *sym, size_t count)
{
for (size_t i = 0; i < count; ++i)
{
Symbols.AddSymbol(new PSymbolConstNumeric(sym[i].Name, this, sym[i].Value));
}
}
//==========================================================================
//
// PFloat :: WriteValue
//
//==========================================================================
void PFloat::WriteValue(FArchive &ar, const void *addr) const
{
float singleprecision;
if (Size == 8)
{
// If it can be written as single precision without information
// loss, then prefer that over writing a full-sized double.
double doubleprecision = *(double *)addr;
singleprecision = (float)doubleprecision;
if (singleprecision != doubleprecision)
{
ar.WriteByte(VAL_Float64);
ar << doubleprecision;
}
}
else
{
singleprecision = *(float *)addr;
}
ar.WriteByte(VAL_Float32);
ar << singleprecision;
}
//==========================================================================
//
// PFloat :: ReadValue
//
//==========================================================================
static bool ReadValueDbl(FArchive &ar, double *addr, unsigned tag)
{
double val;
union
{
BYTE val8;
WORD val16;
DWORD val32;
QWORD val64;
fixed_t fix;
float single;
angle_t ang;
};
switch (tag)
{
case VAL_Zero: val = 0; break;
case VAL_One: val = 1; break;
case VAL_Int8: ar << val8; val = (SBYTE)val8; break;
case VAL_UInt8: ar << val8; val = val8; break;
case VAL_Int16: ar << val16; val = (SWORD)val16; break;
case VAL_UInt16: ar << val16; val = val16; break;
case VAL_Int32: ar << val32; val = (SDWORD)val32; break;
case VAL_UInt32: ar << val32; val = val32; break;
case VAL_Int64: ar << val64; val = (double)(SQWORD)val64; break;
case VAL_UInt64: ar << val64; val = (double)val64; break;
case VAL_Float32: ar << single; val = single; break;
case VAL_Float64: ar << val; break;
default: PType::SkipValue(ar, tag); return false; // Incompatible type
}
*(double *)addr = val;
return true;
}
bool PFloat::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
double val;
if (ReadValueDbl(ar, &val, tag))
{
if (Size == 4)
{
*(float *)addr = (float)val;
}
else
{
*(double *)addr = val;
}
return true;
}
return false;
}
//==========================================================================
//
// PFloat :: SetValue
//
//==========================================================================
void PFloat::SetValue(void *addr, int val)
{
return SetValue(addr, (double)val);
}
void PFloat::SetValue(void *addr, double val)
{
assert(((intptr_t)addr & (Align - 1)) == 0 && "unaligned address");
if (Size == 4)
{
*(float *)addr = (float)val;
}
else
{
assert(Size == 8);
*(double *)addr = val;
}
}
//==========================================================================
//
// PFloat :: GetValueInt
//
//==========================================================================
int PFloat::GetValueInt(void *addr) const
{
return xs_ToInt(GetValueFloat(addr));
}
//==========================================================================
//
// PFloat :: GetValueFloat
//
//==========================================================================
double PFloat::GetValueFloat(void *addr) const
{
assert(((intptr_t)addr & (Align - 1)) == 0 && "unaligned address");
if (Size == 4)
{
return *(float *)addr;
}
else
{
assert(Size == 8);
return *(double *)addr;
}
}
//==========================================================================
//
// PFloat :: GetStoreOp
//
//==========================================================================
int PFloat::GetStoreOp() const
{
if (Size == 4)
{
return OP_SSP;
}
else
{
assert(Size == 8);
return OP_SDP;
}
}
//==========================================================================
//
// PFloat :: GetLoadOp
//
//==========================================================================
int PFloat::GetLoadOp() const
{
if (Size == 4)
{
return OP_LSP;
}
else
{
assert(Size == 8);
return OP_LDP;
}
assert(0 && "Cannot load this type");
return OP_NOP;
}
//==========================================================================
//
// PFloat :: GetRegType
//
//==========================================================================
int PFloat::GetRegType() const
{
return REGT_FLOAT;
}
/* PString ****************************************************************/
IMPLEMENT_CLASS(PString)
//==========================================================================
//
// PString Default Constructor
//
//==========================================================================
PString::PString()
: PBasicType(sizeof(FString), __alignof(FString))
{
}
//==========================================================================
//
// PString :: GetRegType
//
//==========================================================================
int PString::GetRegType() const
{
return REGT_STRING;
}
//==========================================================================
//
// PString :: WriteValue
//
//==========================================================================
void PString::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_String);
ar.WriteString(*(const FString *)addr);
}
//==========================================================================
//
// PString :: ReadValue
//
//==========================================================================
bool PString::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag == VAL_String)
{
ar << *(FString *)addr;
}
else if (tag == VAL_Name)
{
const char *str = ar.ReadName();
*(FString *)addr = str;
}
else
{
SkipValue(ar, tag);
return false;
}
return true;
}
//==========================================================================
//
// PString :: SetDefaultValue
//
//==========================================================================
void PString::SetDefaultValue(void *base, unsigned offset, TArray<FTypeAndOffset> *special) const
{
new((BYTE *)base + offset) FString;
if (special != NULL)
{
special->Push(std::make_pair(this, offset));
}
}
//==========================================================================
//
// PString :: InitializeValue
//
//==========================================================================
void PString::InitializeValue(void *addr, const void *def) const
{
new(addr) FString(*(FString *)def);
}
//==========================================================================
//
// PString :: DestroyValue
//
//==========================================================================
void PString::DestroyValue(void *addr) const
{
((FString *)addr)->~FString();
}
/* PName ******************************************************************/
IMPLEMENT_CLASS(PName)
//==========================================================================
//
// PName Default Constructor
//
//==========================================================================
PName::PName()
: PInt(sizeof(FName), true)
{
assert(sizeof(FName) == __alignof(FName));
}
//==========================================================================
//
// PName :: WriteValue
//
//==========================================================================
void PName::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_Name);
ar.WriteName(((const FName *)addr)->GetChars());
}
//==========================================================================
//
// PName :: ReadValue
//
//==========================================================================
bool PName::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag == VAL_Name)
{
*(FName *)addr = FName(ar.ReadName());
}
else if (tag == VAL_String)
{
FString str;
ar << str;
*(FName *)addr = FName(str);
}
else
{
SkipValue(ar, tag);
return false;
}
return true;
}
/* PSound *****************************************************************/
IMPLEMENT_CLASS(PSound)
//==========================================================================
//
// PSound Default Constructor
//
//==========================================================================
PSound::PSound()
: PInt(sizeof(FSoundID), true)
{
assert(sizeof(FSoundID) == __alignof(FSoundID));
}
//==========================================================================
//
// PSound :: WriteValue
//
//==========================================================================
void PSound::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_Name);
ar.WriteName(*(const FSoundID *)addr);
}
//==========================================================================
//
// PSound :: ReadValue
//
//==========================================================================
bool PSound::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag == VAL_Name)
{
const char *str = ar.ReadName();
*(FSoundID *)addr = FSoundID(str);
}
else if (tag == VAL_String)
{
FString str;
ar << str;
*(FSoundID *)addr = FSoundID(str);
}
else
{
SkipValue(ar, tag);
return false;
}
return true;
}
/* PColor *****************************************************************/
IMPLEMENT_CLASS(PColor)
//==========================================================================
//
// PColor Default Constructor
//
//==========================================================================
PColor::PColor()
: PInt(sizeof(PalEntry), true)
{
assert(sizeof(PalEntry) == __alignof(PalEntry));
}
/* PStatePointer **********************************************************/
IMPLEMENT_CLASS(PStatePointer)
//==========================================================================
//
// PStatePointer Default Constructor
//
//==========================================================================
PStatePointer::PStatePointer()
: PBasicType(sizeof(FState *), __alignof(FState *))
{
}
//==========================================================================
//
// PStatePointer :: GetStoreOp
//
//==========================================================================
int PStatePointer::GetStoreOp() const
{
return OP_SP;
}
//==========================================================================
//
// PStatePointer :: GetLoadOp
//
//==========================================================================
int PStatePointer::GetLoadOp() const
{
return OP_LP;
}
//==========================================================================
//
// PStatePointer :: GetRegType
//
//==========================================================================
int PStatePointer::GetRegType() const
{
return REGT_POINTER;
}
//==========================================================================
//
// PStatePointer :: WriteValue
//
//==========================================================================
void PStatePointer::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_State);
ar << *(FState **)addr;
}
//==========================================================================
//
// PStatePointer :: ReadValue
//
//==========================================================================
bool PStatePointer::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag == VAL_State)
{
ar << *(FState **)addr;
return true;
}
SkipValue(ar, tag);
return false;
}
/* PPointer ***************************************************************/
IMPLEMENT_POINTY_CLASS(PPointer)
DECLARE_POINTER(PointedType)
END_POINTERS
//==========================================================================
//
// PPointer - Default Constructor
//
//==========================================================================
PPointer::PPointer()
: PBasicType(sizeof(void *), __alignof(void *)), PointedType(NULL)
{
}
//==========================================================================
//
// PPointer - Parameterized Constructor
//
//==========================================================================
PPointer::PPointer(PType *pointsat)
: PBasicType(sizeof(void *), __alignof(void *)), PointedType(pointsat)
{
}
//==========================================================================
//
// PPointer :: GetStoreOp
//
//==========================================================================
int PPointer::GetStoreOp() const
{
return OP_SP;
}
//==========================================================================
//
// PPointer :: GetLoadOp
//
//==========================================================================
int PPointer::GetLoadOp() const
{
return PointedType->IsKindOf(RUNTIME_CLASS(PClass)) ? OP_LO : OP_LP;
}
//==========================================================================
//
// PPointer :: GetRegType
//
//==========================================================================
int PPointer::GetRegType() const
{
return REGT_POINTER;
}
//==========================================================================
//
// PPointer :: IsMatch
//
//==========================================================================
bool PPointer::IsMatch(intptr_t id1, intptr_t id2) const
{
assert(id2 == 0);
PType *pointat = (PType *)id1;
return pointat == PointedType;
}
//==========================================================================
//
// PPointer :: GetTypeIDs
//
//==========================================================================
void PPointer::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = (intptr_t)PointedType;
id2 = 0;
}
//==========================================================================
//
// PPointer :: WriteValue
//
//==========================================================================
void PPointer::WriteValue(FArchive &ar, const void *addr) const
{
if (PointedType->IsKindOf(RUNTIME_CLASS(PClass)))
{
ar.WriteByte(VAL_Object);
ar << *(DObject **)addr;
}
else
{
assert(0 && "Pointer points to a type we don't handle");
I_Error("Attempt to save pointer to unhandled type");
}
}
//==========================================================================
//
// PPointer :: ReadValue
//
//==========================================================================
bool PPointer::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag == VAL_Object && PointedType->IsKindOf(RUNTIME_CLASS(PClass)))
{
ar << *(DObject **)addr;
return true;
}
SkipValue(ar, tag);
return false;
}
//==========================================================================
//
// NewPointer
//
// Returns a PPointer to an object of the specified type
//
//==========================================================================
PPointer *NewPointer(PType *type)
{
size_t bucket;
PType *ptype = TypeTable.FindType(RUNTIME_CLASS(PPointer), (intptr_t)type, 0, &bucket);
if (ptype == NULL)
{
ptype = new PPointer(type);
TypeTable.AddType(ptype, RUNTIME_CLASS(PPointer), (intptr_t)type, 0, bucket);
}
return static_cast<PPointer *>(ptype);
}
/* PClassPointer **********************************************************/
IMPLEMENT_POINTY_CLASS(PClassPointer)
DECLARE_POINTER(ClassRestriction)
END_POINTERS
//==========================================================================
//
// PClassPointer - Default Constructor
//
//==========================================================================
PClassPointer::PClassPointer()
: PPointer(RUNTIME_CLASS(PClass)), ClassRestriction(NULL)
{
}
//==========================================================================
//
// PClassPointer - Parameterized Constructor
//
//==========================================================================
PClassPointer::PClassPointer(PClass *restrict)
: PPointer(RUNTIME_CLASS(PClass)), ClassRestriction(restrict)
{
}
//==========================================================================
//
// PClassPointer :: IsMatch
//
//==========================================================================
bool PClassPointer::IsMatch(intptr_t id1, intptr_t id2) const
{
const PType *pointat = (const PType *)id1;
const PClass *classat = (const PClass *)id2;
assert(pointat->IsKindOf(RUNTIME_CLASS(PClass)));
return classat == ClassRestriction;
}
//==========================================================================
//
// PClassPointer :: GetTypeIDs
//
//==========================================================================
void PClassPointer::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
assert(PointedType == RUNTIME_CLASS(PClass));
id1 = (intptr_t)PointedType;
id2 = (intptr_t)ClassRestriction;
}
//==========================================================================
//
// NewClassPointer
//
// Returns a PClassPointer for the restricted type.
//
//==========================================================================
PClassPointer *NewClassPointer(PClass *restrict)
{
size_t bucket;
PType *ptype = TypeTable.FindType(RUNTIME_CLASS(PClassPointer), (intptr_t)RUNTIME_CLASS(PClass), (intptr_t)restrict, &bucket);
if (ptype == NULL)
{
ptype = new PClassPointer(restrict);
TypeTable.AddType(ptype, RUNTIME_CLASS(PClassPointer), (intptr_t)RUNTIME_CLASS(PClass), (intptr_t)restrict, bucket);
}
return static_cast<PClassPointer *>(ptype);
}
/* PEnum ******************************************************************/
IMPLEMENT_POINTY_CLASS(PEnum)
DECLARE_POINTER(ValueType)
END_POINTERS
//==========================================================================
//
// PEnum - Default Constructor
//
//==========================================================================
PEnum::PEnum()
: ValueType(NULL)
{
}
//==========================================================================
//
// PEnum - Parameterized Constructor
//
//==========================================================================
PEnum::PEnum(FName name, DObject *outer)
: PNamedType(name, outer), ValueType(NULL)
{
}
//==========================================================================
//
// NewEnum
//
// Returns a PEnum for the given name and container, making sure not to
// create duplicates.
//
//==========================================================================
PEnum *NewEnum(FName name, DObject *outer)
{
size_t bucket;
PType *etype = TypeTable.FindType(RUNTIME_CLASS(PEnum), (intptr_t)outer, (intptr_t)name, &bucket);
if (etype == NULL)
{
etype = new PEnum(name, outer);
TypeTable.AddType(etype, RUNTIME_CLASS(PEnum), (intptr_t)outer, (intptr_t)name, bucket);
}
return static_cast<PEnum *>(etype);
}
/* PArray *****************************************************************/
IMPLEMENT_POINTY_CLASS(PArray)
DECLARE_POINTER(ElementType)
END_POINTERS
//==========================================================================
//
// PArray - Default Constructor
//
//==========================================================================
PArray::PArray()
: ElementType(NULL), ElementCount(0)
{
}
//==========================================================================
//
// PArray - Parameterized Constructor
//
//==========================================================================
PArray::PArray(PType *etype, unsigned int ecount)
: ElementType(etype), ElementCount(ecount)
{
Align = etype->Align;
// Since we are concatenating elements together, the element size should
// also be padded to the nearest alignment.
ElementSize = (etype->Size + (etype->Align - 1)) & ~(etype->Align - 1);
Size = ElementSize * ecount;
}
//==========================================================================
//
// PArray :: IsMatch
//
//==========================================================================
bool PArray::IsMatch(intptr_t id1, intptr_t id2) const
{
const PType *elemtype = (const PType *)id1;
unsigned int count = (unsigned int)(intptr_t)id2;
return elemtype == ElementType && count == ElementCount;
}
//==========================================================================
//
// PArray :: GetTypeIDs
//
//==========================================================================
void PArray::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = (intptr_t)ElementType;
id2 = ElementCount;
}
//==========================================================================
//
// PArray :: WriteValue
//
//==========================================================================
void PArray::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_Array);
ar.WriteCount(ElementCount);
const BYTE *addrb = (const BYTE *)addr;
for (unsigned i = 0; i < ElementCount; ++i)
{
ElementType->WriteValue(ar, addrb);
addrb += ElementSize;
}
}
//==========================================================================
//
// PArray :: ReadValue
//
//==========================================================================
bool PArray::ReadValue(FArchive &ar, void *addr) const
{
bool readsomething = false;
BYTE tag;
ar << tag;
if (tag == VAL_Array)
{
unsigned count = ar.ReadCount();
unsigned i;
BYTE *addrb = (BYTE *)addr;
for (i = 0; i < MIN(count, ElementCount); ++i)
{
readsomething |= ElementType->ReadValue(ar, addrb);
addrb += ElementSize;
}
if (i < ElementCount)
{
DPrintf("Array on disk (%u) is bigger than in memory (%u)\n",
count, ElementCount);
for (; i < ElementCount; ++i)
{
SkipValue(ar);
}
}
return readsomething;
}
SkipValue(ar, tag);
return false;
}
//==========================================================================
//
// PArray :: SetDefaultValue
//
//==========================================================================
void PArray::SetDefaultValue(void *base, unsigned offset, TArray<FTypeAndOffset> *special) const
{
for (unsigned i = 0; i < ElementCount; ++i)
{
ElementType->SetDefaultValue(base, offset + i*ElementSize, special);
}
}
//==========================================================================
//
// NewArray
//
// Returns a PArray for the given type and size, making sure not to create
// duplicates.
//
//==========================================================================
PArray *NewArray(PType *type, unsigned int count)
{
size_t bucket;
PType *atype = TypeTable.FindType(RUNTIME_CLASS(PArray), (intptr_t)type, count, &bucket);
if (atype == NULL)
{
atype = new PArray(type, count);
TypeTable.AddType(atype, RUNTIME_CLASS(PArray), (intptr_t)type, count, bucket);
}
return (PArray *)atype;
}
/* PVector ****************************************************************/
IMPLEMENT_CLASS(PVector)
//==========================================================================
//
// PVector - Default Constructor
//
//==========================================================================
PVector::PVector()
: PArray(TypeFloat32, 3)
{
}
//==========================================================================
//
// PVector - Parameterized Constructor
//
//==========================================================================
PVector::PVector(unsigned int size)
: PArray(TypeFloat32, size)
{
assert(size >= 2 && size <= 4);
}
//==========================================================================
//
// NewVector
//
// Returns a PVector with the given dimension, making sure not to create
// duplicates.
//
//==========================================================================
PVector *NewVector(unsigned int size)
{
size_t bucket;
PType *type = TypeTable.FindType(RUNTIME_CLASS(PVector), (intptr_t)TypeFloat32, size, &bucket);
if (type == NULL)
{
type = new PVector(size);
TypeTable.AddType(type, RUNTIME_CLASS(PVector), (intptr_t)TypeFloat32, size, bucket);
}
return (PVector *)type;
}
/* PDynArray **************************************************************/
IMPLEMENT_POINTY_CLASS(PDynArray)
DECLARE_POINTER(ElementType)
END_POINTERS
//==========================================================================
//
// PDynArray - Default Constructor
//
//==========================================================================
PDynArray::PDynArray()
: ElementType(NULL)
{
Size = sizeof(FArray);
Align = __alignof(FArray);
}
//==========================================================================
//
// PDynArray - Parameterized Constructor
//
//==========================================================================
PDynArray::PDynArray(PType *etype)
: ElementType(etype)
{
Size = sizeof(FArray);
Align = __alignof(FArray);
}
//==========================================================================
//
// PDynArray :: IsMatch
//
//==========================================================================
bool PDynArray::IsMatch(intptr_t id1, intptr_t id2) const
{
assert(id2 == 0);
const PType *elemtype = (const PType *)id1;
return elemtype == ElementType;
}
//==========================================================================
//
// PDynArray :: GetTypeIDs
//
//==========================================================================
void PDynArray::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = (intptr_t)ElementType;
id2 = 0;
}
//==========================================================================
//
// NewDynArray
//
// Creates a new DynArray of the given type, making sure not to create a
// duplicate.
//
//==========================================================================
PDynArray *NewDynArray(PType *type)
{
size_t bucket;
PType *atype = TypeTable.FindType(RUNTIME_CLASS(PDynArray), (intptr_t)type, 0, &bucket);
if (atype == NULL)
{
atype = new PDynArray(type);
TypeTable.AddType(atype, RUNTIME_CLASS(PDynArray), (intptr_t)type, 0, bucket);
}
return (PDynArray *)atype;
}
/* PMap *******************************************************************/
IMPLEMENT_POINTY_CLASS(PMap)
DECLARE_POINTER(KeyType)
DECLARE_POINTER(ValueType)
END_POINTERS
//==========================================================================
//
// PMap - Default Constructor
//
//==========================================================================
PMap::PMap()
: KeyType(NULL), ValueType(NULL)
{
Size = sizeof(FMap);
Align = __alignof(FMap);
}
//==========================================================================
//
// PMap - Parameterized Constructor
//
//==========================================================================
PMap::PMap(PType *keytype, PType *valtype)
: KeyType(keytype), ValueType(valtype)
{
Size = sizeof(FMap);
Align = __alignof(FMap);
}
//==========================================================================
//
// PMap :: IsMatch
//
//==========================================================================
bool PMap::IsMatch(intptr_t id1, intptr_t id2) const
{
const PType *keyty = (const PType *)id1;
const PType *valty = (const PType *)id2;
return keyty == KeyType && valty == ValueType;
}
//==========================================================================
//
// PMap :: GetTypeIDs
//
//==========================================================================
void PMap::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = (intptr_t)KeyType;
id2 = (intptr_t)ValueType;
}
//==========================================================================
//
// NewMap
//
// Returns a PMap for the given key and value types, ensuring not to create
// duplicates.
//
//==========================================================================
PMap *NewMap(PType *keytype, PType *valuetype)
{
size_t bucket;
PType *maptype = TypeTable.FindType(RUNTIME_CLASS(PMap), (intptr_t)keytype, (intptr_t)valuetype, &bucket);
if (maptype == NULL)
{
maptype = new PMap(keytype, valuetype);
TypeTable.AddType(maptype, RUNTIME_CLASS(PMap), (intptr_t)keytype, (intptr_t)valuetype, bucket);
}
return (PMap *)maptype;
}
/* PStruct ****************************************************************/
IMPLEMENT_CLASS(PStruct)
//==========================================================================
//
// PStruct - Default Constructor
//
//==========================================================================
PStruct::PStruct()
{
}
//==========================================================================
//
// PStruct - Parameterized Constructor
//
//==========================================================================
PStruct::PStruct(FName name, DObject *outer)
: PNamedType(name, outer)
{
}
//==========================================================================
//
// PStruct :: SetDefaultValue
//
//==========================================================================
void PStruct::SetDefaultValue(void *base, unsigned offset, TArray<FTypeAndOffset> *special) const
{
for (const PField *field : Fields)
{
if (!(field->Flags & VARF_Native))
{
field->Type->SetDefaultValue(base, offset + field->Offset, special);
}
}
}
//==========================================================================
//
// PStruct :: WriteValue
//
//==========================================================================
void PStruct::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_Struct);
WriteFields(ar, addr, Fields);
}
//==========================================================================
//
// PStruct :: ReadValue
//
//==========================================================================
bool PStruct::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag == VAL_Struct)
{
return ReadFields(ar, addr);
}
SkipValue(ar, tag);
return true;
}
//==========================================================================
//
// PStruct :: WriteFields STATIC
//
//==========================================================================
void PStruct::WriteFields(FArchive &ar, const void *addr, const TArray<PField *> &fields)
{
for (unsigned i = 0; i < fields.Size(); ++i)
{
const PField *field = fields[i];
// Skip fields with native serialization
if (!(field->Flags & VARF_Native))
{
ar.WriteName(field->SymbolName);
field->Type->WriteValue(ar, (const BYTE *)addr + field->Offset);
}
}
ar.WriteName(NULL);
}
//==========================================================================
//
// PStruct :: ReadFields
//
//==========================================================================
bool PStruct::ReadFields(FArchive &ar, void *addr) const
{
bool readsomething = false;
const char *label = ar.ReadName();
if (label == NULL)
{ // If there is nothing to restore, we count it as success.
return true;
}
for (; label != NULL; label = ar.ReadName())
{
const PSymbol *sym = Symbols.FindSymbol(FName(label, true), true);
if (sym == NULL)
{
DPrintf("Cannot find field %s in %s\n",
label, TypeName.GetChars());
SkipValue(ar);
}
else if (!sym->IsKindOf(RUNTIME_CLASS(PField)))
{
DPrintf("Symbol %s in %s is not a field\n",
label, TypeName.GetChars());
SkipValue(ar);
}
else
{
readsomething |= static_cast<const PField *>(sym)->Type->ReadValue(ar,
(BYTE *)addr + static_cast<const PField *>(sym)->Offset);
}
}
return readsomething;
}
//==========================================================================
//
// PStruct :: AddField
//
// Appends a new field to the end of a struct. Returns either the new field
// or NULL if a symbol by that name already exists.
//
//==========================================================================
PField *PStruct::AddField(FName name, PType *type, DWORD flags)
{
PField *field = new PField(name, type);
// The new field is added to the end of this struct, alignment permitting.
field->Offset = (Size + (type->Align - 1)) & ~(type->Align - 1);
// Enlarge this struct to enclose the new field.
Size = field->Offset + type->Size;
// This struct's alignment is the same as the largest alignment of any of
// its fields.
Align = MAX(Align, type->Align);
if (Symbols.AddSymbol(field) == NULL)
{ // name is already in use
delete field;
return NULL;
}
Fields.Push(field);
return field;
}
//==========================================================================
//
// PStruct :: PropagateMark
//
//==========================================================================
size_t PStruct::PropagateMark()
{
GC::MarkArray(Fields);
return Fields.Size() * sizeof(void*) + Super::PropagateMark();
}
//==========================================================================
//
// NewStruct
// Returns a PStruct for the given name and container, making sure not to
// create duplicates.
//
//==========================================================================
PStruct *NewStruct(FName name, DObject *outer)
{
size_t bucket;
PType *stype = TypeTable.FindType(RUNTIME_CLASS(PStruct), (intptr_t)outer, (intptr_t)name, &bucket);
if (stype == NULL)
{
stype = new PStruct(name, outer);
TypeTable.AddType(stype, RUNTIME_CLASS(PStruct), (intptr_t)outer, (intptr_t)name, bucket);
}
return static_cast<PStruct *>(stype);
}
/* PField *****************************************************************/
IMPLEMENT_CLASS(PField)
//==========================================================================
//
// PField - Default Constructor
//
//==========================================================================
PField::PField()
: PSymbol(NAME_None), Offset(0), Type(NULL), Flags(0)
{
}
/* PPrototype *************************************************************/
IMPLEMENT_CLASS(PPrototype)
//==========================================================================
//
// PPrototype - Default Constructor
//
//==========================================================================
PPrototype::PPrototype()
{
}
//==========================================================================
//
// PPrototype - Parameterized Constructor
//
//==========================================================================
PPrototype::PPrototype(const TArray<PType *> &rettypes, const TArray<PType *> &argtypes)
: ArgumentTypes(argtypes), ReturnTypes(rettypes)
{
}
//==========================================================================
//
// PPrototype :: IsMatch
//
//==========================================================================
bool PPrototype::IsMatch(intptr_t id1, intptr_t id2) const
{
const TArray<PType *> *args = (const TArray<PType *> *)id1;
const TArray<PType *> *rets = (const TArray<PType *> *)id2;
return *args == ArgumentTypes && *rets == ReturnTypes;
}
//==========================================================================
//
// PPrototype :: GetTypeIDs
//
//==========================================================================
void PPrototype::GetTypeIDs(intptr_t &id1, intptr_t &id2) const
{
id1 = (intptr_t)&ArgumentTypes;
id2 = (intptr_t)&ReturnTypes;
}
//==========================================================================
//
// PPrototype :: PropagateMark
//
//==========================================================================
size_t PPrototype::PropagateMark()
{
GC::MarkArray(ArgumentTypes);
GC::MarkArray(ReturnTypes);
return (ArgumentTypes.Size() + ReturnTypes.Size()) * sizeof(void*) +
Super::PropagateMark();
}
//==========================================================================
//
// NewPrototype
//
// Returns a PPrototype for the given return and argument types, making sure
// not to create duplicates.
//
//==========================================================================
PPrototype *NewPrototype(const TArray<PType *> &rettypes, const TArray<PType *> &argtypes)
{
size_t bucket;
PType *proto = TypeTable.FindType(RUNTIME_CLASS(PPrototype), (intptr_t)&argtypes, (intptr_t)&rettypes, &bucket);
if (proto == NULL)
{
proto = new PPrototype(rettypes, argtypes);
TypeTable.AddType(proto, RUNTIME_CLASS(PPrototype), (intptr_t)&argtypes, (intptr_t)&rettypes, bucket);
}
return static_cast<PPrototype *>(proto);
}
/* PFunction **************************************************************/
IMPLEMENT_CLASS(PFunction)
//==========================================================================
//
// PFunction :: PropagataMark
//
//==========================================================================
size_t PFunction::PropagateMark()
{
for (unsigned i = 0; i < Variants.Size(); ++i)
{
//GC::Mark(Variants[i].Proto);
GC::Mark(Variants[i].Implementation);
}
return Variants.Size() * sizeof(Variants[0]) + Super::PropagateMark();
}
//==========================================================================
//
// PFunction :: AddVariant
//
// Adds a new variant for this function. Does not check if a matching
// variant already exists.
//
//==========================================================================
unsigned PFunction::AddVariant(PPrototype *proto, TArray<DWORD> &argflags, VMFunction *impl)
{
Variant variant;
//variant.Proto = proto;
variant.ArgFlags = argflags;
variant.Implementation = impl;
impl->Proto = proto;
return Variants.Push(variant);
}
/* PClass *****************************************************************/
IMPLEMENT_POINTY_CLASS(PClass)
DECLARE_POINTER(ParentClass)
END_POINTERS
//==========================================================================
//
// PClass :: WriteValue
//
// Similar to PStruct's version, except it also needs to traverse parent
// classes.
//
//==========================================================================
static void RecurseWriteFields(const PClass *type, FArchive &ar, const void *addr)
{
if (type != NULL)
{
RecurseWriteFields(type->ParentClass, ar, addr);
// Don't write this part if it has no non-native variables
for (unsigned i = 0; i < type->Fields.Size(); ++i)
{
if (!(type->Fields[i]->Flags & VARF_Native))
{
// Tag this section with the class it came from in case
// a more-derived class has variables that shadow a less-
// derived class. Whether or not that is a language feature
// that will actually be allowed remains to be seen.
ar.UserWriteClass(const_cast<PClass *>(type));
PStruct::WriteFields(ar, addr, type->Fields);
break;
}
}
}
}
void PClass::WriteValue(FArchive &ar, const void *addr) const
{
ar.WriteByte(VAL_Class);
RecurseWriteFields(this, ar, addr);
ar.UserWriteClass(NULL);
}
//==========================================================================
//
// PClass :: ReadValue
//
//==========================================================================
bool PClass::ReadValue(FArchive &ar, void *addr) const
{
BYTE tag;
ar << tag;
if (tag != VAL_Class)
{
SkipValue(ar, tag);
return false;
}
else
{
bool readsomething = false;
PClass *type;
for (ar.UserReadClass(type); type != NULL; ar.UserReadClass(type))
{
// Only read it if the type is related to this one.
const PClass *parent;
for (parent = this; parent != NULL; parent = parent->ParentClass)
{
if (parent == type)
{
break;
}
}
if (parent != NULL)
{
readsomething |= type->ReadFields(ar, addr);
}
else
{
DPrintf("Unknown superclass %s of class %s\n",
type->TypeName.GetChars(), TypeName.GetChars());
SkipValue(ar, VAL_Struct);
}
}
return readsomething;
}
}
//==========================================================================
//
// cregcmp
//
// Sorter to keep built-in types in a deterministic order. (Needed?)
//
//==========================================================================
static int cregcmp (const void *a, const void *b) NO_SANITIZE
{
const PClass *class1 = *(const PClass **)a;
const PClass *class2 = *(const PClass **)b;
return strcmp(class1->TypeName, class2->TypeName);
}
//==========================================================================
//
// PClass :: StaticInit STATIC
//
// Creates class metadata for all built-in types.
//
//==========================================================================
void PClass::StaticInit ()
{
atterm (StaticShutdown);
StaticBootstrap();
FAutoSegIterator probe(CRegHead, CRegTail);
while (*++probe != NULL)
{
((ClassReg *)*probe)->RegisterClass ();
}
// Keep built-in classes in consistant order. I did this before, though
// I'm not sure if this is really necessary to maintain any sort of sync.
qsort(&AllClasses[0], AllClasses.Size(), sizeof(AllClasses[0]), cregcmp);
}
//==========================================================================
//
// PClass :: StaticShutdown STATIC
//
// Frees FlatPointers belonging to all classes. Only really needed to avoid
// memory leak warnings at exit.
//
//==========================================================================
void PClass::StaticShutdown ()
{
TArray<size_t *> uniqueFPs(64);
unsigned int i, j;
FS_Close(); // this must be done before the classes get deleted.
for (i = 0; i < PClass::AllClasses.Size(); ++i)
{
PClass *type = PClass::AllClasses[i];
PClass::AllClasses[i] = NULL;
if (type->FlatPointers != &TheEnd && type->FlatPointers != type->Pointers)
{
// FlatPointers are shared by many classes, so we must check for
// duplicates and only delete those that are unique.
for (j = 0; j < uniqueFPs.Size(); ++j)
{
if (type->FlatPointers == uniqueFPs[j])
{
break;
}
}
if (j == uniqueFPs.Size())
{
uniqueFPs.Push(const_cast<size_t *>(type->FlatPointers));
}
}
}
for (i = 0; i < uniqueFPs.Size(); ++i)
{
delete[] uniqueFPs[i];
}
TypeTable.Clear();
bShutdown = true;
AllClasses.Clear();
PClassActor::AllActorClasses.Clear();
FAutoSegIterator probe(CRegHead, CRegTail);
while (*++probe != NULL)
{
((ClassReg *)*probe)->MyClass = NULL;
}
}
//==========================================================================
//
// PClass :: StaticBootstrap STATIC
//
// PClass and PClassClass have intermingling dependencies on their
// definitions. To sort this out, we explicitly define them before
// proceeding with the RegisterClass loop in StaticInit().
//
//==========================================================================
void PClass::StaticBootstrap()
{
PClassClass *clscls = new PClassClass;
PClassClass::RegistrationInfo.SetupClass(clscls);
PClassClass *cls = new PClassClass;
PClass::RegistrationInfo.SetupClass(cls);
// The PClassClass constructor initialized these to NULL, because the
// PClass metadata had not been created yet. Now it has, so we know what
// they should be and can insert them into the type table successfully.
clscls->TypeTableType = cls;
cls->TypeTableType = cls;
clscls->InsertIntoHash();
cls->InsertIntoHash();
// Create parent objects before we go so that these definitions are complete.
clscls->ParentClass = PClassType::RegistrationInfo.ParentType->RegisterClass();
cls->ParentClass = PClass::RegistrationInfo.ParentType->RegisterClass();
}
//==========================================================================
//
// PClass Constructor
//
//==========================================================================
PClass::PClass()
{
Size = sizeof(DObject);
ParentClass = NULL;
Pointers = NULL;
FlatPointers = NULL;
HashNext = NULL;
Defaults = NULL;
bRuntimeClass = false;
ConstructNative = NULL;
PClass::AllClasses.Push(this);
}
//==========================================================================
//
// PClass Destructor
//
//==========================================================================
PClass::~PClass()
{
if (Defaults != NULL)
{
M_Free(Defaults);
Defaults = NULL;
}
}
//==========================================================================
//
// ClassReg :: RegisterClass
//
// Create metadata describing the built-in class this struct is intended
// for.
//
//==========================================================================
PClass *ClassReg::RegisterClass()
{
static ClassReg *const metaclasses[] =
{
&PClass::RegistrationInfo,
&PClassActor::RegistrationInfo,
&PClassInventory::RegistrationInfo,
&PClassAmmo::RegistrationInfo,
&PClassHealth::RegistrationInfo,
&PClassPuzzleItem::RegistrationInfo,
&PClassWeapon::RegistrationInfo,
&PClassPlayerPawn::RegistrationInfo,
&PClassType::RegistrationInfo,
&PClassClass::RegistrationInfo,
&PClassWeaponPiece::RegistrationInfo,
&PClassPowerupGiver::RegistrationInfo,
};
// Skip classes that have already been registered
if (MyClass != NULL)
{
return MyClass;
}
// Add type to list
PClass *cls;
if (MetaClassNum >= countof(metaclasses))
{
assert(0 && "Class registry has an invalid meta class identifier");
}
if (metaclasses[MetaClassNum]->MyClass == NULL)
{ // Make sure the meta class is already registered before registering this one
metaclasses[MetaClassNum]->RegisterClass();
}
cls = static_cast<PClass *>(metaclasses[MetaClassNum]->MyClass->CreateNew());
SetupClass(cls);
cls->InsertIntoHash();
if (ParentType != NULL)
{
cls->ParentClass = ParentType->RegisterClass();
}
return cls;
}
//==========================================================================
//
// ClassReg :: SetupClass
//
// Copies the class-defining parameters from a ClassReg to the Class object
// created for it.
//
//==========================================================================
void ClassReg::SetupClass(PClass *cls)
{
assert(MyClass == NULL);
MyClass = cls;
cls->TypeName = FName(Name+1);
cls->Size = SizeOf;
cls->Pointers = Pointers;
cls->ConstructNative = ConstructNative;
}
//==========================================================================
//
// PClass :: InsertIntoHash
//
// Add class to the type table.
//
//==========================================================================
void PClass::InsertIntoHash ()
{
size_t bucket;
PType *found;
found = TypeTable.FindType(RUNTIME_CLASS(PClass), (intptr_t)Outer, TypeName, &bucket);
if (found != NULL)
{ // This type has already been inserted
// ... but there is no need whatsoever to make it a fatal error!
Printf (TEXTCOLOR_RED"Tried to register class '%s' more than once.\n", TypeName.GetChars());
TypeTable.ReplaceType(this, found, bucket);
}
else
{
TypeTable.AddType(this, RUNTIME_CLASS(PClass), (intptr_t)Outer, TypeName, bucket);
}
}
//==========================================================================
//
// PClass :: FindParentClass
//
// Finds a parent class that matches the given name, including itself.
//
//==========================================================================
const PClass *PClass::FindParentClass(FName name) const
{
for (const PClass *type = this; type != NULL; type = type->ParentClass)
{
if (type->TypeName == name)
{
return type;
}
}
return NULL;
}
//==========================================================================
//
// PClass :: FindClass
//
// Find a type, passed the name as a name.
//
//==========================================================================
PClass *PClass::FindClass (FName zaname)
{
if (zaname == NAME_None)
{
return NULL;
}
return static_cast<PClass *>(TypeTable.FindType(RUNTIME_CLASS(PClass),
/*FIXME:Outer*/0, zaname, NULL));
}
//==========================================================================
//
// PClass :: CreateNew
//
// Create a new object that this class represents
//
//==========================================================================
DObject *PClass::CreateNew() const
{
BYTE *mem = (BYTE *)M_Malloc (Size);
assert (mem != NULL);
// Set this object's defaults before constructing it.
if (Defaults != NULL)
memcpy (mem, Defaults, Size);
else
memset (mem, 0, Size);
ConstructNative (mem);
((DObject *)mem)->SetClass (const_cast<PClass *>(this));
if (Defaults != NULL)
{
InitializeSpecials(mem);
}
return (DObject *)mem;
}
//==========================================================================
//
// PClass :: InitializeSpecials
//
// Initialize special fields (e.g. strings) of a newly-created instance.
//
//==========================================================================
void PClass::InitializeSpecials(void *addr) const
{
// Once we reach a native class, we can stop going up the family tree,
// since native classes handle initialization natively.
if (!bRuntimeClass)
{
return;
}
assert(ParentClass != NULL);
ParentClass->InitializeSpecials(addr);
for (auto tao : SpecialInits)
{
tao.first->InitializeValue((BYTE*)addr + tao.second, Defaults + tao.second);
}
}
//==========================================================================
//
// PClass :: DestroySpecials
//
// Destroy special fields (e.g. strings) of an instance that is about to be
// deleted.
//
//==========================================================================
void PClass::DestroySpecials(void *addr) const
{
// Once we reach a native class, we can stop going up the family tree,
// since native classes handle deinitialization natively.
if (!bRuntimeClass)
{
return;
}
assert(ParentClass != NULL);
ParentClass->DestroySpecials(addr);
for (auto tao : SpecialInits)
{
tao.first->DestroyValue((BYTE *)addr + tao.second);
}
}
//==========================================================================
//
// PClass :: Derive
//
// Copies inheritable values into the derived class and other miscellaneous setup.
//
//==========================================================================
void PClass::Derive(PClass *newclass)
{
newclass->ParentClass = this;
newclass->ConstructNative = ConstructNative;
// Set up default instance of the new class.
newclass->Defaults = (BYTE *)M_Malloc(newclass->Size);
if (Defaults) memcpy(newclass->Defaults, Defaults, Size);
if (newclass->Size > Size)
{
memset(newclass->Defaults + Size, 0, newclass->Size - Size);
}
newclass->Symbols.SetParentTable(&this->Symbols);
}
//==========================================================================
//
// PClass :: CreateDerivedClass
//
// Create a new class based on an existing class
//
//==========================================================================
PClass *PClass::CreateDerivedClass(FName name, unsigned int size)
{
assert (size >= Size);
PClass *type;
bool notnew;
size_t bucket;
PClass *existclass = static_cast<PClass *>(TypeTable.FindType(RUNTIME_CLASS(PClass), /*FIXME:Outer*/0, name, &bucket));
// This is a placeholder so fill it in
if (existclass != NULL && (existclass->Size == TentativeClass))
{
type = const_cast<PClass*>(existclass);
if (!IsDescendantOf(type->ParentClass))
{
I_Error("%s must inherit from %s but doesn't.", name.GetChars(), type->ParentClass->TypeName.GetChars());
}
DPrintf("Defining placeholder class %s\n", name.GetChars());
notnew = true;
}
else
{
notnew = false;
}
// Create a new type object of the same type as us. (We may be a derived class of PClass.)
type = static_cast<PClass *>(GetClass()->CreateNew());
type->TypeName = name;
type->Size = size;
type->bRuntimeClass = true;
Derive(type);
DeriveData(type);
if (!notnew)
{
type->InsertIntoHash();
}
else
{
PClassActor::AllActorClasses.Pop(); // remove the newly added class from the list
// todo: replace all affected fields
for (unsigned i = 0; i < PClassActor::AllActorClasses.Size(); i++)
{
PClassActor::AllActorClasses[i]->ReplaceClassRef(existclass, type);
if (PClassActor::AllActorClasses[i] == existclass)
PClassActor::AllActorClasses[i] = static_cast<PClassActor*>(type);
}
TypeTable.ReplaceType(type, existclass, bucket);
}
return type;
}
//==========================================================================
//
// PClass :: AddField
//
//==========================================================================
PField *PClass::AddField(FName name, PType *type, DWORD flags)
{
unsigned oldsize = Size;
PField *field = Super::AddField(name, type, flags);
if (field != NULL)
{
Defaults = (BYTE *)M_Realloc(Defaults, Size);
memset(Defaults + oldsize, 0, Size - oldsize);
// If this is a native class, then we must not initialize and
// destroy any of its members. We do, however, initialize the
// default instance since it's not a normal instance of the class.
type->SetDefaultValue(Defaults, field->Offset,
bRuntimeClass ? &SpecialInits : NULL);
}
return field;
}
//==========================================================================
//
// PClass :: FindClassTentative
//
// Like FindClass but creates a placeholder if no class is found.
// CreateDerivedClass will automatically fill in the placeholder when the
// actual class is defined.
//
//==========================================================================
PClass *PClass::FindClassTentative(FName name, bool fatal)
{
if (name == NAME_None)
{
return NULL;
}
size_t bucket;
PType *found = TypeTable.FindType(RUNTIME_CLASS(PClass),
/*FIXME:Outer*/0, name, &bucket);
if (found != NULL)
{
return static_cast<PClass *>(found);
}
PClass *type = static_cast<PClass *>(GetClass()->CreateNew());
DPrintf("Creating placeholder class %s : %s\n", name.GetChars(), TypeName.GetChars());
type->TypeName = name;
type->ParentClass = this;
type->Size = TentativeClass;
type->bRuntimeClass = true;
TypeTable.AddType(type, RUNTIME_CLASS(PClass), (intptr_t)type->Outer, name, bucket);
return type;
}
//==========================================================================
//
// PClass :: BuildFlatPointers
//
// Create the FlatPointers array, if it doesn't exist already.
// It comprises all the Pointers from superclasses plus this class's own
// Pointers. If this class does not define any new Pointers, then
// FlatPointers will be set to the same array as the super class.
//
//==========================================================================
void PClass::BuildFlatPointers ()
{
if (FlatPointers != NULL)
{ // Already built: Do nothing.
return;
}
else if (ParentClass == NULL)
{ // No parent: FlatPointers is the same as Pointers.
if (Pointers == NULL)
{ // No pointers: Make FlatPointers a harmless non-NULL.
FlatPointers = &TheEnd;
}
else
{
FlatPointers = Pointers;
}
}
else
{
ParentClass->BuildFlatPointers ();
if (Pointers == NULL)
{ // No new pointers: Just use the same FlatPointers as the parent.
FlatPointers = ParentClass->FlatPointers;
}
else
{ // New pointers: Create a new FlatPointers array and add them.
int numPointers, numSuperPointers;
// Count pointers defined by this class.
for (numPointers = 0; Pointers[numPointers] != ~(size_t)0; numPointers++)
{ }
// Count pointers defined by superclasses.
for (numSuperPointers = 0; ParentClass->FlatPointers[numSuperPointers] != ~(size_t)0; numSuperPointers++)
{ }
// Concatenate them into a new array
size_t *flat = new size_t[numPointers + numSuperPointers + 1];
if (numSuperPointers > 0)
{
memcpy (flat, ParentClass->FlatPointers, sizeof(size_t)*numSuperPointers);
}
memcpy (flat + numSuperPointers, Pointers, sizeof(size_t)*(numPointers+1));
FlatPointers = flat;
}
}
}
//==========================================================================
//
// PClass :: NativeClass
//
// Finds the underlying native type underlying this class.
//
//==========================================================================
const PClass *PClass::NativeClass() const
{
const PClass *cls = this;
while (cls && cls->bRuntimeClass)
cls = cls->ParentClass;
return cls;
}
/* FTypeTable **************************************************************/
//==========================================================================
//
// FTypeTable :: FindType
//
//==========================================================================
PType *FTypeTable::FindType(PClass *metatype, intptr_t parm1, intptr_t parm2, size_t *bucketnum)
{
size_t bucket = Hash(metatype, parm1, parm2) % HASH_SIZE;
if (bucketnum != NULL)
{
*bucketnum = bucket;
}
for (PType *type = TypeHash[bucket]; type != NULL; type = type->HashNext)
{
if (type->GetClass()->TypeTableType == metatype && type->IsMatch(parm1, parm2))
{
return type;
}
}
return NULL;
}
//==========================================================================
//
// FTypeTable :: ReplaceType
//
// Replaces an existing type in the table with a new version of the same
// type. For use when redefining actors in DECORATE. Does nothing if the
// old version is not in the table.
//
//==========================================================================
void FTypeTable::ReplaceType(PType *newtype, PType *oldtype, size_t bucket)
{
for (PType **type_p = &TypeHash[bucket]; *type_p != NULL; type_p = &(*type_p)->HashNext)
{
PType *type = *type_p;
if (type == oldtype)
{
newtype->HashNext = type->HashNext;
type->HashNext = NULL;
*type_p = newtype;
break;
}
}
}
//==========================================================================
//
// FTypeTable :: AddType - Fully Parameterized Version
//
//==========================================================================
void FTypeTable::AddType(PType *type, PClass *metatype, intptr_t parm1, intptr_t parm2, size_t bucket)
{
#ifdef _DEBUG
size_t bucketcheck;
assert(metatype == type->GetClass()->TypeTableType && "Metatype does not match passed object");
assert(FindType(metatype, parm1, parm2, &bucketcheck) == NULL && "Type must not be inserted more than once");
assert(bucketcheck == bucket && "Passed bucket was wrong");
#endif
type->HashNext = TypeHash[bucket];
TypeHash[bucket] = type;
GC::WriteBarrier(type);
}
//==========================================================================
//
// FTypeTable :: AddType - Simple Version
//
//==========================================================================
void FTypeTable::AddType(PType *type)
{
PClass *metatype;
intptr_t parm1, parm2;
size_t bucket;
metatype = type->GetClass()->TypeTableType;
type->GetTypeIDs(parm1, parm2);
bucket = Hash(metatype, parm1, parm2) % HASH_SIZE;
assert(FindType(metatype, parm1, parm2, NULL) == NULL && "Type must not be inserted more than once");
type->HashNext = TypeHash[bucket];
TypeHash[bucket] = type;
GC::WriteBarrier(type);
}
//==========================================================================
//
// FTypeTable :: Hash STATIC
//
//==========================================================================
size_t FTypeTable::Hash(const PClass *p1, intptr_t p2, intptr_t p3)
{
size_t i1 = (size_t)p1;
// Swap the high and low halves of i1. The compiler should be smart enough
// to transform this into a ROR or ROL.
i1 = (i1 >> (sizeof(size_t)*4)) | (i1 << (sizeof(size_t)*4));
if (p1 != RUNTIME_CLASS(PPrototype))
{
size_t i2 = (size_t)p2;
size_t i3 = (size_t)p3;
return (~i1 ^ i2) + i3 * 961748927; // i3 is multiplied by a prime
}
else
{ // Prototypes need to hash the TArrays at p2 and p3
const TArray<PType *> *a2 = (const TArray<PType *> *)p2;
const TArray<PType *> *a3 = (const TArray<PType *> *)p3;
for (unsigned i = 0; i < a2->Size(); ++i)
{
i1 = (i1 * 961748927) + (size_t)((*a2)[i]);
}
for (unsigned i = 0; i < a3->Size(); ++i)
{
i1 = (i1 * 961748927) + (size_t)((*a3)[i]);
}
return i1;
}
}
//==========================================================================
//
// FTypeTable :: Mark
//
// Mark all types in this table for the garbage collector.
//
//==========================================================================
void FTypeTable::Mark()
{
for (int i = HASH_SIZE - 1; i >= 0; --i)
{
if (TypeHash[i] != NULL)
{
GC::Mark(TypeHash[i]);
}
}
}
//==========================================================================
//
// FTypeTable :: Clear
//
// Removes everything from the table. We let the garbage collector worry
// about deleting them.
//
//==========================================================================
void FTypeTable::Clear()
{
memset(TypeHash, 0, sizeof(TypeHash));
}
#include "c_dispatch.h"
CCMD(typetable)
{
DumpTypeTable();
}
// Symbol tables ------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS(PSymbol);
IMPLEMENT_CLASS(PSymbolConst);
IMPLEMENT_CLASS(PSymbolConstNumeric);
IMPLEMENT_CLASS(PSymbolConstString);
IMPLEMENT_POINTY_CLASS(PSymbolType)
DECLARE_POINTER(Type)
END_POINTERS
IMPLEMENT_POINTY_CLASS(PSymbolVMFunction)
DECLARE_POINTER(Function)
END_POINTERS
IMPLEMENT_CLASS(PSymbolTreeNode)
//==========================================================================
//
//
//
//==========================================================================
PSymbol::~PSymbol()
{
}
PSymbolTable::PSymbolTable()
: ParentSymbolTable(NULL)
{
}
PSymbolTable::PSymbolTable(PSymbolTable *parent)
: ParentSymbolTable(parent)
{
}
PSymbolTable::~PSymbolTable ()
{
ReleaseSymbols();
}
size_t PSymbolTable::MarkSymbols()
{
size_t count = 0;
MapType::Iterator it(Symbols);
MapType::Pair *pair;
while (it.NextPair(pair))
{
GC::Mark(pair->Value);
count++;
}
return count * sizeof(*pair);
}
void PSymbolTable::ReleaseSymbols()
{
// The GC will take care of deleting the symbols. We just need to
// clear our references to them.
Symbols.Clear();
}
void PSymbolTable::SetParentTable (PSymbolTable *parent)
{
ParentSymbolTable = parent;
}
PSymbol *PSymbolTable::FindSymbol (FName symname, bool searchparents) const
{
PSymbol * const *value = Symbols.CheckKey(symname);
if (value == NULL && searchparents && ParentSymbolTable != NULL)
{
return ParentSymbolTable->FindSymbol(symname, searchparents);
}
return value != NULL ? *value : NULL;
}
PSymbol *PSymbolTable::FindSymbolInTable(FName symname, PSymbolTable *&symtable)
{
PSymbol * const *value = Symbols.CheckKey(symname);
if (value == NULL)
{
if (ParentSymbolTable != NULL)
{
return ParentSymbolTable->FindSymbolInTable(symname, symtable);
}
symtable = NULL;
return NULL;
}
symtable = this;
return *value;
}
PSymbol *PSymbolTable::AddSymbol (PSymbol *sym)
{
// Symbols that already exist are not inserted.
if (Symbols.CheckKey(sym->SymbolName) != NULL)
{
return NULL;
}
Symbols.Insert(sym->SymbolName, sym);
return sym;
}
PSymbol *PSymbolTable::ReplaceSymbol(PSymbol *newsym)
{
// If a symbol with a matching name exists, take its place and return it.
PSymbol **symslot = Symbols.CheckKey(newsym->SymbolName);
if (symslot != NULL)
{
PSymbol *oldsym = *symslot;
*symslot = newsym;
return oldsym;
}
// Else, just insert normally and return NULL since there was no
// symbol to replace.
Symbols.Insert(newsym->SymbolName, newsym);
return NULL;
}
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