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Cosmo
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refactoring and cleanup 

cosmoB_loadOSLib -> cosmoB_loadOS
This commit is contained in:
CPunch 2023-08-24 23:36:32 -05:00 committed by cpunch
parent 155e0829fb
commit f76f2ffa92
10 changed files with 46 additions and 64 deletions
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2
Makefile
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@ -1,7 +1,7 @@
# make clean && make && ./bin/cosmo
CC=clang
CFLAGS=-fPIE -Wall -O3 -Isrc -std=c99
CFLAGS=-fPIE -Wall -Isrc -O3 -std=c99
LDFLAGS=-lm #-fsanitize=address
OUT=bin/cosmo

15
main.c
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@ -49,9 +49,8 @@ static bool interpret(CState *state, const char *script, const char *mod)
// cosmoV_compileString pushes the result onto the stack (COBJ_ERROR or COBJ_CLOSURE)
if (cosmoV_compileString(state, script, mod)) {
COSMOVMRESULT res = cosmoV_call(state, 0, 0); // 0 args being passed, 0 results expected
if (res == COSMOVM_RUNTIME_ERR)
// 0 args being passed, 0 results expected
if (!cosmoV_call(state, 0, 0))
cosmoV_printError(state, state->error);
} else {
cosmoV_pop(state); // pop the error off the stack
@ -171,9 +170,7 @@ void compileScript(CState *state, const char *in, const char *out)
void loadScript(CState *state, const char *in)
{
FILE *file;
file = fopen(in, "rb");
FILE *file = fopen(in, "rb");
if (!cosmoV_undump(state, fileReader, file)) {
cosmoV_pop(state); // pop the error off the stack
cosmoV_printError(state, state->error);
@ -181,9 +178,7 @@ void loadScript(CState *state, const char *in)
};
printf("[!] loaded %s!\n", in);
COSMOVMRESULT res = cosmoV_call(state, 0, 0); // 0 args being passed, 0 results expected
if (res == COSMOVM_RUNTIME_ERR)
if (!cosmoV_call(state, 0, 0))
cosmoV_printError(state, state->error);
fclose(file);
@ -203,7 +198,7 @@ int main(int argc, char *const argv[])
{
CState *state = cosmoV_newState();
cosmoB_loadLibrary(state);
cosmoB_loadOSLib(state);
cosmoB_loadOS(state);
cosmoB_loadVM(state);
int opt;

15
src/cbaselib.c
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@ -68,17 +68,12 @@ int cosmoB_pcall(CState *state, int nargs, CValue *args)
return 0;
}
// unfreeze the state GC before calling the function
cosmoM_unfreezeGC(state);
// call the passed callable
COSMOVMRESULT res = cosmoV_pcall(state, nargs - 1, 1);
// call the passed callable, the passed arguments are already in the
// proper order lol, so we can just call it
bool res = cosmoV_pcall(state, nargs - 1, 1);
// insert false before the result
cosmo_insert(state, 0, cosmoV_newBoolean(res == COSMOVM_OK));
// refreeze the state GC so it can be properly unfrozen
cosmoM_freezeGC(state);
cosmo_insert(state, 0, cosmoV_newBoolean(res));
return 2;
}
@ -332,7 +327,7 @@ int cosmoB_osSystem(CState *state, int nargs, CValue *args)
return 1;
}
COSMO_API void cosmoB_loadOSLib(CState *state)
COSMO_API void cosmoB_loadOS(CState *state)
{
const char *identifiers[] = {"read", "time", "system"};

2
src/cbaselib.h
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@ -22,7 +22,7 @@ COSMO_API void cosmoB_loadObjLib(CState *state);
- os.system()
- os.time()
*/
COSMO_API void cosmoB_loadOSLib(CState *state);
COSMO_API void cosmoB_loadOS(CState *state);
/* loads the base string library, including:
- string.sub & <string>:sub()

5
src/cchunk.c
View File

@ -49,9 +49,10 @@ int addConstant(CState *state, CChunk *chunk, CValue value)
return i; // we already have a matching constant!
}
cosmoM_freezeGC(state); // so our GC doesn't free it
cosmoV_pushValue(state, value); // push the value to the stack so our GC can see it
appendValArray(state, &chunk->constants, value);
cosmoM_unfreezeGC(state);
cosmoV_pop(state);
return chunk->constants.count - 1; // return the index of the new constants
}

2
src/cchunk.h
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@ -21,6 +21,8 @@ void cleanChunk(CState *state, CChunk *chunk); // frees everything but the struc
void freeChunk(CState *state, CChunk *chunk); // frees everything including the struct
int addConstant(CState *state, CChunk *chunk, CValue value);
bool validateChunk(CState *state, CChunk *chunk);
// write to chunk
void writeu8Chunk(CState *state, CChunk *chunk, INSTRUCTION i, int line);
void writeu16Chunk(CState *state, CChunk *chunk, uint16_t i, int line);

15
src/cobj.c
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@ -166,7 +166,7 @@ _eqFail:
cosmoV_pushValue(state, eq1);
cosmoV_pushRef(state, obj1);
cosmoV_pushRef(state, obj2);
if (cosmoV_call(state, 2, 1) != COSMOVM_OK)
if (!cosmoV_call(state, 2, 1))
return false;
// check return value and make sure it's a boolean
@ -411,7 +411,7 @@ bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *v
cosmoT_get(state, &cosmoV_readTable(*val)->tbl, key, val)) {
cosmoV_pushValue(state, *val); // push function
cosmoV_pushRef(state, (CObj *)obj); // push object
if (cosmoV_call(state, 1, 1) != COSMOVM_OK) // call the function with the 1 argument
if (!cosmoV_call(state, 1, 1)) // call the function with the 1 argument
return false;
*val = *cosmoV_pop(state); // set value to the return value of __index
return true;
@ -532,7 +532,7 @@ bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *v
cosmoV_pushValue(state, *val); // push function
cosmoV_pushRef(state, (CObj *)object); // push object
cosmoV_pushValue(state, key); // push key
if (cosmoV_call(state, 2, 1) != COSMOVM_OK) // call the function with the 2 arguments
if (!cosmoV_call(state, 2, 1)) // call the function with the 2 arguments
return false;
*val = *cosmoV_pop(state); // set value to the return value of __index
return true;
@ -552,7 +552,7 @@ bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue
cosmoV_pushRef(state, (CObj *)object); // push object
cosmoV_pushValue(state, key); // push key & value pair
cosmoV_pushValue(state, val);
return cosmoV_call(state, 3, 0) == COSMOVM_OK;
return cosmoV_call(state, 3, 0);
} else { // there's no __newindex function defined
cosmoV_error(state, "Couldn't set index on object without __newindex function!");
}
@ -569,7 +569,7 @@ CObjString *cosmoO_toString(CState *state, CObj *obj)
if (protoObject != NULL && cosmoO_getIString(state, protoObject, ISTRING_TOSTRING, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) != COSMOVM_OK)
if (!cosmoV_call(state, 1, 1))
return cosmoO_copyString(state, "<err>", 5);
// make sure the __tostring function returned a string
@ -635,7 +635,7 @@ cosmo_Number cosmoO_toNumber(CState *state, CObj *obj)
if (proto != NULL && cosmoO_getIString(state, proto, ISTRING_TONUMBER, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) != COSMOVM_OK) // call res, expect 1 return val of <number>
if (!cosmoV_call(state, 1, 1)) // call res, expect 1 return val of <number>
return 0;
StkPtr temp = cosmoV_getTop(state, 0);
@ -668,8 +668,7 @@ int cosmoO_count(CState *state, CObj *obj)
if (proto != NULL && cosmoO_getIString(state, proto, ISTRING_COUNT, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) !=
COSMOVM_OK) // call res, we expect 1 return value of type <number>
if (!cosmoV_call(state, 1, 1)) // call res, we expect 1 return value of type <number>
return 0;
StkPtr ret = cosmoV_getTop(state, 0);

1
src/cobj.h
View File

@ -145,7 +145,6 @@ static inline bool isObjType(CValue val, CObjType type)
return IS_REF(val) && cosmoV_readRef(val)->type == type;
}
// just protects against macro expansion
static inline bool IS_CALLABLE(CValue val)
{
return IS_CLOSURE(val) || IS_CFUNCTION(val) || IS_METHOD(val);

42
src/cvm.c
View File

@ -346,6 +346,7 @@ static bool rawCall(CState *state, CObjClosure *closure, int args, int nresults,
return true;
}
// returns true if successful, false if error
bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
{
#ifdef VM_DEBUG
@ -418,7 +419,8 @@ bool invokeMethod(CState *state, CObj *obj, CValue func, int args, int nresults,
// wraps cosmoV_call in a protected state, CObjError will be pushed onto the stack if function call
// failed, else return values are passed
COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults)
// returns false if function call failed, true if function call succeeded
bool cosmoV_pcall(CState *state, int args, int nresults)
{
StkPtr base = cosmoV_getTop(state, args);
@ -434,25 +436,20 @@ COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults)
cosmoV_pushValue(state, cosmoV_newNil());
}
return COSMOVM_RUNTIME_ERR;
return false;
}
return COSMOVM_OK;
return true;
}
/*
calls a callable object at stack->top - args - 1, passing the # of args to the callable, and
ensuring nresults are returned
returns:
COSMOVM_OK: callable object exited normally
COSMOVM_RUNTIME_ERR: an error occurred, grab the error from state->error
*/
COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults)
// calls a callable object at stack->top - args - 1, passing the # of args to the callable, and
// ensuring nresults are returned
// returns false if an error was thrown, else true if successful
bool cosmoV_call(CState *state, int args, int nresults)
{
StkPtr val = cosmoV_getTop(state, args); // function will always be right above the args
return callCValue(state, *val, args, nresults, 0) ? COSMOVM_OK : COSMOVM_RUNTIME_ERR;
return callCValue(state, *val, args, nresults, 0);
}
static inline bool isFalsey(StkPtr val)
@ -813,7 +810,7 @@ int cosmoV_execute(CState *state)
{
uint8_t args = READBYTE(frame);
uint8_t nres = READBYTE(frame);
if (cosmoV_call(state, args, nres) != COSMOVM_OK) {
if (!cosmoV_call(state, args, nres)) {
return -1;
}
}
@ -1040,9 +1037,7 @@ int cosmoV_execute(CState *state)
cosmoV_pop(state); // pop the object from the stack
cosmoV_pushValue(state, val);
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) !=
COSMOVM_OK) // we expect 1 return value on the stack, the iterable
// object
if (!cosmoV_call(state, 1, 1)) // we expect 1 return value on the stack, the iterable object
return -1;
StkPtr iObj = cosmoV_getTop(state, 0);
@ -1101,7 +1096,7 @@ int cosmoV_execute(CState *state)
}
cosmoV_pushValue(state, *temp);
if (cosmoV_call(state, 0, nresults) != COSMOVM_OK)
if (!cosmoV_call(state, 0, nresults))
return -1;
if (IS_NIL(*(cosmoV_getTop(
@ -1332,20 +1327,23 @@ int cosmoV_execute(CState *state)
// compare & push
cosmoV_pushBoolean(state, cosmoV_equal(state, *valA, *valB));
}
CASE(OP_LESS) :
{
NUMBEROP(cosmoV_newBoolean, <);
}
CASE(OP_GREATER) :
{
NUMBEROP(cosmoV_newBoolean, >);
}
CASE(OP_LESS) :
CASE(OP_LESS_EQUAL) :
{
NUMBEROP(cosmoV_newBoolean, <);
NUMBEROP(cosmoV_newBoolean, <=);
}
CASE(OP_GREATER_EQUAL) :
{
NUMBEROP(cosmoV_newBoolean, >=);
}
CASE(OP_LESS_EQUAL)
: {NUMBEROP(cosmoV_newBoolean, <=)} CASE(OP_TRUE) : cosmoV_pushBoolean(state, true);
CASE(OP_TRUE) : cosmoV_pushBoolean(state, true);
CASE(OP_FALSE) : cosmoV_pushBoolean(state, false);
CASE(OP_NIL) : cosmoV_pushValue(state, cosmoV_newNil());
CASE(OP_RETURN) :

11
src/cvm.h
View File

@ -21,16 +21,9 @@
# define VM_JUMPTABLE
#endif
typedef enum
{
COSMOVM_OK,
COSMOVM_RUNTIME_ERR,
COSMOVM_BUILDTIME_ERR
} COSMOVMRESULT;
// args = # of pass parameters, nresults = # of expected results
COSMO_API COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults);
COSMO_API COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults);
COSMO_API bool cosmoV_call(CState *state, int args, int nresults);
COSMO_API bool cosmoV_pcall(CState *state, int args, int nresults);
// pushes new object onto the stack & returns a pointer to the new object
COSMO_API CObjObject *cosmoV_makeObject(CState *state, int pairs);