mirror of https://github.com/CPunch/Cosmo.git
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
#ifndef CSTATE_H
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#define CSTATE_H
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#include "cobj.h"
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#include "cosmo.h"
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#include "ctable.h"
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#include "cvalue.h"
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#include <setjmp.h>
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struct CCallFrame
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{
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CObjClosure *closure;
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INSTRUCTION *pc;
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CValue *base;
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};
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typedef enum IStringEnum
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{
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ISTRING_INIT, // __init
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ISTRING_TOSTRING, // __tostring
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ISTRING_TONUMBER, // __tonumber
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ISTRING_EQUAL, // __equals
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ISTRING_INDEX, // __index
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ISTRING_NEWINDEX, // __newindex
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ISTRING_COUNT, // __count
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ISTRING_GETTER, // __getter
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ISTRING_SETTER, // __setter
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ISTRING_ITER, // __iter
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ISTRING_NEXT, // __next
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ISTRING_RESERVED, // __reserved
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ISTRING_MAX // if this becomes greater than 33, we are out of space in cosmo_Flag. you'll have
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// to change that to uint64_t
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} IStringEnum;
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typedef struct ArrayCObj
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{
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CObj **array;
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int count;
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int capacity;
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} ArrayCObj;
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typedef struct CPanic
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{
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jmp_buf jmp;
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StkPtr top;
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int frameCount;
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struct CPanic *prev;
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} CPanic;
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struct CState
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{
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int freezeGC; // when > 0, GC events will be ignored (for internal use)
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int frameCount;
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CPanic *panic;
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CObj *objects; // tracks all of our allocated objects
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CObj *userRoots; // user definable roots, this holds CObjs that should be considered "roots",
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// lets the VM know you are holding a reference to a CObj in your code
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ArrayCObj grayStack; // keeps track of which objects *haven't yet* been traversed in our GC, but
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// *have been* found
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size_t allocatedBytes;
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size_t nextGC; // when allocatedBytes reaches this threshhold, trigger a GC event
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CObjUpval *openUpvalues; // tracks all of our still open (meaning still on the stack) upvalues
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CTable strings;
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CObjTable *globals;
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CValue *top; // top of the stack
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CObjObject *protoObjects[COBJ_MAX]; // proto object for each COBJ type [NULL = no default proto]
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CObjString *iStrings[ISTRING_MAX]; // strings used internally by the VM, eg. __init, __index
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CCallFrame callFrame[FRAME_MAX]; // call frames
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CValue stack[STACK_MAX]; // stack
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};
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CPanic *cosmoV_newPanic(CState *state);
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void cosmoV_freePanic(CState *state);
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COSMO_API CState *cosmoV_newState();
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COSMO_API void cosmoV_freeState(CState *state);
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// expects 2*pairs values on the stack, each pair should consist of 1 key and 1 value
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COSMO_API void cosmoV_register(CState *state, int pairs);
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COSMO_API void cosmoV_printStack(CState *state);
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#endif
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