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/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
This file contains the definitions of the core objects that implement the class system.
*/
#ifndef _PYRKERNEL_H_
#define _PYRKERNEL_H_
#include "PyrObject.h"
#include "VMGlobals.h"
#define classClassNumInstVars 16
enum { classIsIntrinsic = 1, classHasIndexableInstances = 2, classCompileUGen = 4 };
struct PyrClass : public PyrObjectHdr
{
PyrSlot name;
PyrSlot nextclass;
PyrSlot superclass;
PyrSlot subclasses;
PyrSlot methods;
PyrSlot instVarNames;
PyrSlot classVarNames;
PyrSlot iprototype; // instance prototype
PyrSlot cprototype; // class var prototype
PyrSlot instanceFormat;
PyrSlot instanceFlags;
PyrSlot classIndex;
PyrSlot classFlags;
PyrSlot maxSubclassIndex; // used by isKindOf
PyrSlot filenameSym;
PyrSlot charPos;
};
inline bool isKindOf(PyrObjectHdr *obj, struct PyrClass *testclass)
{
int objClassIndex = obj->classptr->classIndex.ui;
return objClassIndex >= testclass->classIndex.ui && objClassIndex <= testclass->maxSubclassIndex.ui;
}
inline bool isKindOfSlot(PyrSlot *slot, struct PyrClass *testclass)
{
return IsObj(slot) && isKindOf(slot->uo, testclass);
}
/*
operations on class:
numInstVars()
numClassVars()
*/
struct PyrFrame {
PyrSlot vars[1];
PyrSlot myself;
PyrSlot method;
PyrSlot caller;
PyrSlot context;
PyrSlot homeContext;
PyrSlot ip;
};
#define FRAMESIZE 6
#define USESTACKFRAMES 1
struct PyrProcess : public PyrObjectHdr
{
PyrSlot classVars;
PyrSlot interpreter;
PyrSlot curThread, mainThread;
PyrSlot processID;
PyrSlot sysSchedulerQueue;
};
enum { tInit, tStart, tReady, tRunning, tSleeping, tBlocked, tYieldToChild, tYieldToParent, tDone };
struct PyrThread : public PyrObjectHdr
{
PyrSlot state, func, stack, stackSize, method, block, frame, ip, sp;
PyrSlot numpop, returnLevels, receiver, numArgsPushed;
PyrSlot parent, terminalValue;
PyrSlot primitiveError;
PyrSlot primitiveIndex;
PyrSlot randData;
PyrSlot beats, seconds, clock;
PyrSlot environment;
PyrSlot exceptionHandler;
};
#define EVALSTACKDEPTH 8192
struct PyrMethodRaw {
unsigned short unused1;
unsigned short specialIndex;
unsigned short methType;
unsigned short frameSize;
unsigned char unused2;
unsigned char numargs;
unsigned char varargs;
unsigned char numvars;
unsigned char numtemps;
unsigned char needsHeapContext;
unsigned char popSize;
unsigned char posargs;
};
#define METHRAW(obj) ((PyrMethodRaw*)&(((PyrBlock*)obj)->rawData1))
struct PyrBlock : public PyrObjectHdr
{
PyrSlot rawData1;
PyrSlot rawData2;
PyrSlot code; // byte codes, nil if inlined
PyrSlot selectors; // method selectors, class names, closures table
PyrSlot constants; // floating point constants table (to alleviate the literal table problem)
PyrSlot prototypeFrame; // prototype of an activation frame
PyrSlot context; // ***defining block context
PyrSlot argNames; // ***arguments to block
PyrSlot varNames; // ***variables in block
PyrSlot sourceCode; // source code if it is a closed function.
};
struct PyrMethod : public PyrBlock
{
PyrSlot ownerclass;
PyrSlot name;
PyrSlot primitiveName;
PyrSlot filenameSym;
PyrSlot charPos;
//PyrSlot byteMeter;
//PyrSlot callMeter;
};
enum {
methNormal = 0,
methReturnSelf,
methReturnLiteral,
methReturnArg,
methReturnInstVar,
methAssignInstVar,
methReturnClassVar,
methAssignClassVar,
methRedirect,
methForward,
methPrimitive,
methBlock
};
struct PyrClosure : public PyrObjectHdr
{
PyrSlot block;
PyrSlot context;
};
struct PyrInterpreter : public PyrObjectHdr
{
PyrSlot cmdLine, context;
PyrSlot a, b, c, d, e, f, g, h, i, j;
PyrSlot k, l, m, n, o, p, q, r, s, t;
PyrSlot u, v, w, x, y, z;
PyrSlot codeDump;
};
/* special values */
enum {
svNil,
svFalse,
svTrue,
svNegOne,
svZero,
svOne,
svTwo,
svFHalf,
svFNegOne,
svFZero,
svFOne,
svFTwo,
svInf,
svNumSpecialValues
};
extern double gSpecialValues[svNumSpecialValues];
extern PyrMethod *gNullMethod; // used to fill row table
PyrObject* instantiateObject(class PyrGC *gc, PyrClass* classobj, int size,
bool fill, bool collect);
PyrObject* newPyrObject(class PyrGC *gc, size_t inNumBytes, int inFlags, int inFormat, bool inCollect);
PyrString* newPyrString(class PyrGC *gc, const char *s, int flags, bool collect);
PyrString* newPyrStringN(class PyrGC *gc, int size, int flags, bool collect);
PyrObject* newPyrArray(class PyrGC *gc, int size, int flags, bool collect);
PyrSymbolArray* newPyrSymbolArray(class PyrGC *gc, int size, int flags, bool collect);
PyrInt8Array* newPyrInt8Array(class PyrGC *gc, int size, int flags, bool collect);
PyrInt32Array* newPyrInt32Array(class PyrGC *gc, int size, int flags, bool collect);
PyrDoubleArray* newPyrDoubleArray(class PyrGC *gc, int size, int flags, bool collect);
PyrObject* copyObject(class PyrGC *gc, PyrObject *inobj, bool collect);
PyrObject* copyObjectRange(class PyrGC *gc, PyrObject *inobj, int start, int end, bool collect);
inline void SetFrame(PyrSlot* slot, PyrFrame* frame)
{
(slot)->ui = ((int)(frame));
(slot)->utag = tagSFrame - METHRAW((frame)->method.uoblk)->needsHeapContext;
}
inline void SetFrameOrNil(PyrSlot* slot, PyrFrame* frame)
{
if (frame) {
(slot)->ui = ((int)(frame));
(slot)->utag = tagSFrame - METHRAW((frame)->method.uoblk)->needsHeapContext;
} else {
(slot)->utag = tagNil;
(slot)->ui = 0;
}
}
#endif
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