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Cosmo
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even more error handling refactoring 

removing all of these useless checks has actually made cosmoV_execute just a
lil bit faster :)
This commit is contained in:
CPunch 2023-09-04 20:14:53 -05:00 committed by cpunch
parent cc9eb4a5ec
commit 89be01aaf6
4 changed files with 48 additions and 120 deletions
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27
src/cobj.c
View File

@ -397,7 +397,7 @@ bool cosmoO_isDescendant(CObj *obj, CObjObject *proto)
}
// returns false if error thrown
bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj)
void cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj)
{
if (!cosmoT_get(state, &proto->tbl, key,
val)) { // if the field doesn't exist in the object, check the proto
@ -407,18 +407,17 @@ bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *v
cosmoV_pushRef(state, (CObj *)obj); // push object
cosmoV_call(state, 1, 1); // call the function with the 1 argument
*val = *cosmoV_pop(state); // set value to the return value of __index
return true;
return;
}
if (proto->_obj.proto != NULL &&
cosmoO_getRawObject(state, proto->_obj.proto, key, val, obj))
return true;
// maybe the field is defined in the proto?
if (proto->_obj.proto != NULL) {
cosmoO_getRawObject(state, proto->_obj.proto, key, val, obj);
return;
}
*val = cosmoV_newNil();
return true; // no protoobject to check against / key not found
}
return true;
}
void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue val, CObj *obj)
@ -519,7 +518,7 @@ bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val)
return false; // obj->proto was false, the istring doesn't exist in this object chain
}
bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val)
void cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val)
{
if (cosmoO_getIString(state, object, ISTRING_INDEX, val)) {
cosmoV_pushValue(state, *val); // push function
@ -527,15 +526,12 @@ bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *v
cosmoV_pushValue(state, key); // push key
cosmoV_call(state, 2, 1); // call the function with the 2 arguments
*val = *cosmoV_pop(state); // set value to the return value of __index
return true;
} else { // there's no __index function defined!
} else { // there's no __index function defined!
cosmoV_error(state, "Couldn't index object without __index function!");
}
return false;
}
bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val)
void cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val)
{
CValue ret; // return value for cosmoO_getIString
@ -545,12 +541,9 @@ bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue
cosmoV_pushValue(state, key); // push key & value pair
cosmoV_pushValue(state, val);
cosmoV_call(state, 3, 0);
return true;
} else { // there's no __newindex function defined
cosmoV_error(state, "Couldn't set index on object without __newindex function!");
}
return false;
}
CObjString *cosmoO_toString(CState *state, CObj *obj)

8
src/cobj.h
View File

@ -3,6 +3,8 @@
#include "cosmo.h"
#include <stdarg.h>
typedef enum CObjType
{
COBJ_STRING,
@ -172,10 +174,10 @@ static inline CObjObject *cosmoO_grabProto(CObj *obj)
return obj->type == COBJ_OBJECT ? (CObjObject *)obj : obj->proto;
}
bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj);
void cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj);
void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue val, CObj *obj);
bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val);
bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val);
void cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val);
void cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val);
// sets the user-defined pointer, if a user-define integer is already defined it will be over
// written

113
src/cvm.c
View File

@ -497,7 +497,7 @@ COSMO_API void cosmoV_makeTable(CState *state, int pairs)
cosmoV_pushRef(state, (CObj *)newObj);
}
bool cosmoV_rawget(CState *state, CObj *_obj, CValue key, CValue *val)
void cosmoV_rawget(CState *state, CObj *_obj, CValue key, CValue *val)
{
CObjObject *object = cosmoO_grabProto(_obj);
@ -506,23 +506,16 @@ bool cosmoV_rawget(CState *state, CObj *_obj, CValue key, CValue *val)
CObjString *field = cosmoV_toString(state, key);
cosmoV_error(state, "No proto defined! Couldn't get field '%s' from type %s", field->str,
cosmoO_typeStr(_obj));
*val = cosmoV_newNil();
return false;
}
// push the object onto the stack so the GC can find it
cosmoV_pushRef(state, (CObj *)object);
if (cosmoO_getRawObject(state, object, key, val, _obj)) {
// *val now equals the response, pop the object
cosmoV_pop(state);
return true;
}
cosmoO_getRawObject(state, object, key, val, _obj);
cosmoV_pop(state);
return false;
}
bool cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val)
void cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val)
{
CObjObject *object = cosmoO_grabProto(_obj);
@ -531,14 +524,12 @@ bool cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val)
CObjString *field = cosmoV_toString(state, key);
cosmoV_error(state, "No proto defined! Couldn't set field '%s' to type %s", field->str,
cosmoO_typeStr(_obj));
return false;
}
cosmoO_setRawObject(state, object, key, val, _obj);
return true;
}
COSMO_API bool cosmoV_get(CState *state)
COSMO_API void cosmoV_get(CState *state)
{
CValue val;
StkPtr obj = cosmoV_getTop(state, 1); // object was pushed first
@ -546,20 +537,17 @@ COSMO_API bool cosmoV_get(CState *state)
if (!IS_REF(*obj)) {
cosmoV_error(state, "Couldn't get field from type %s!", cosmoV_typeStr(*obj));
return false;
}
if (!cosmoV_rawget(state, cosmoV_readRef(*obj), *key, &val))
return false;
cosmoV_rawget(state, cosmoV_readRef(*obj), *key, &val);
// pop the obj & key, push the value
cosmoV_setTop(state, 2);
cosmoV_pushValue(state, val);
return true;
}
// yes, this would technically make it possible to set fields of types other than <string>. go crazy
COSMO_API bool cosmoV_set(CState *state)
COSMO_API void cosmoV_set(CState *state)
{
StkPtr obj = cosmoV_getTop(state, 2); // object was pushed first
StkPtr key = cosmoV_getTop(state, 1); // then the key
@ -567,21 +555,17 @@ COSMO_API bool cosmoV_set(CState *state)
if (!IS_REF(*obj)) {
cosmoV_error(state, "Couldn't set field on type %s!", cosmoV_typeStr(*obj));
return false;
}
if (!cosmoV_rawset(state, cosmoV_readRef(*obj), *key, *val))
return false;
cosmoV_rawset(state, cosmoV_readRef(*obj), *key, *val);
// pop the obj, key & value
cosmoV_setTop(state, 3);
return true;
}
COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val)
COSMO_API void cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val)
{
if (!cosmoV_rawget(state, obj, key, val))
return false;
cosmoV_rawget(state, obj, key, val);
// if the result is callable, wrap it in an method
if (IS_CALLABLE(*val)) {
@ -591,8 +575,6 @@ COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *va
cosmoV_pop(state); // pop the object
*val = cosmoV_newRef(method);
}
return true;
}
int _tbl__next(CState *state, int nargs, CValue *args)
@ -696,7 +678,7 @@ static inline uint16_t READUINT(CCallFrame *frame)
# define SWITCH switch (READBYTE(frame))
# define DEFAULT \
default: \
printf("[ERROR] unknown opcode!"); \
printf("[ERROR] unknown opcode!"); \
exit(0)
#endif
@ -849,7 +831,6 @@ int cosmoV_execute(CState *state)
// sanity check
if (!IS_REF(*temp)) {
cosmoV_error(state, "Couldn't index type %s!", cosmoV_typeStr(*temp));
return -1;
}
CObj *obj = cosmoV_readRef(*temp);
@ -858,9 +839,7 @@ int cosmoV_execute(CState *state)
if (proto != NULL) {
// check for __index metamethod
if (!cosmoO_indexObject(state, proto, *key,
&val)) // if returns false, cosmoV_error was called
return -1;
cosmoO_indexObject(state, proto, *key, &val);
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable *)obj;
@ -868,7 +847,6 @@ int cosmoV_execute(CState *state)
} else {
cosmoV_error(state, "No proto defined! Couldn't __index from type %s",
cosmoV_typeStr(*temp));
return -1;
}
cosmoV_setTop(state, 2); // pops the table & the key
@ -883,17 +861,13 @@ int cosmoV_execute(CState *state)
// sanity check
if (!IS_REF(*temp)) {
cosmoV_error(state, "Couldn't set index with type %s!", cosmoV_typeStr(*temp));
return -1;
}
CObj *obj = cosmoV_readRef(*temp);
CObjObject *proto = cosmoO_grabProto(obj);
if (proto != NULL) {
if (!cosmoO_newIndexObject(
state, proto, *key,
*value)) // if it returns false, cosmoV_error was called
return -1;
cosmoO_newIndexObject(state, proto, *key, *value);
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable *)obj;
CValue *newVal = cosmoT_insert(state, &tbl->tbl, *key);
@ -902,7 +876,6 @@ int cosmoV_execute(CState *state)
} else {
cosmoV_error(state, "No proto defined! Couldn't __newindex from type %s",
cosmoV_typeStr(*temp));
return -1;
}
// pop everything off the stack
@ -921,13 +894,11 @@ int cosmoV_execute(CState *state)
// sanity check
if (IS_REF(*temp)) {
if (!cosmoV_rawset(state, cosmoV_readRef(*temp), constants[ident], *value))
return -1;
cosmoV_rawset(state, cosmoV_readRef(*temp), constants[ident], *value);
} else {
CObjString *field = cosmoV_toString(state, constants[ident]);
cosmoV_error(state, "Couldn't set field '%s' on type %s!", field->str,
cosmoV_typeStr(*temp));
return -1;
}
// pop everything off the stack
@ -941,13 +912,11 @@ int cosmoV_execute(CState *state)
// sanity check
if (IS_REF(*temp)) {
if (!cosmoV_rawget(state, cosmoV_readRef(*temp), constants[ident], &val))
return -1;
cosmoV_rawget(state, cosmoV_readRef(*temp), constants[ident], &val);
} else {
CObjString *field = cosmoV_toString(state, constants[ident]);
cosmoV_error(state, "Couldn't get field '%s' from type %s!", field->str,
cosmoV_typeStr(*temp));
return -1;
}
cosmoV_setTop(state, 1); // pops the object
@ -962,13 +931,11 @@ int cosmoV_execute(CState *state)
// this is almost identical to GETOBJECT, however cosmoV_getMethod is used instead
// of just cosmoV_get
if (IS_REF(*temp)) {
if (!cosmoV_getMethod(state, cosmoV_readRef(*temp), constants[ident], &val))
return -1;
cosmoV_getMethod(state, cosmoV_readRef(*temp), constants[ident], &val);
} else {
CObjString *field = cosmoV_toString(state, constants[ident]);
cosmoV_error(state, "Couldn't get field '%s' from type %s!", field->str,
cosmoV_typeStr(*temp));
return -1;
}
cosmoV_setTop(state, 1); // pops the object
@ -985,14 +952,12 @@ int cosmoV_execute(CState *state)
// sanity check
if (IS_REF(*temp)) {
// get the field from the object
if (!cosmoV_rawget(state, cosmoV_readRef(*temp), constants[ident], &val))
return -1;
cosmoV_rawget(state, cosmoV_readRef(*temp), constants[ident], &val);
// now invoke the method!
invokeMethod(state, cosmoV_readRef(*temp), val, args, nres, 1);
} else {
cosmoV_error(state, "Couldn't get from type %s!", cosmoV_typeStr(*temp));
return -1;
}
}
CASE(OP_ITER) :
@ -1002,7 +967,6 @@ int cosmoV_execute(CState *state)
if (!IS_REF(*temp)) {
cosmoV_error(state, "Couldn't iterate over non-iterator type %s!",
cosmoV_typeStr(*temp));
return -1;
}
CObj *obj = cosmoV_readRef(*temp);
@ -1026,7 +990,6 @@ int cosmoV_execute(CState *state)
"Expected iterable object! '__iter' returned %s, expected "
"<object>!",
cosmoV_typeStr(*iObj));
return -1;
}
// get __next method and place it at the top of the stack
@ -1034,7 +997,6 @@ int cosmoV_execute(CState *state)
cosmoV_newRef(state->iStrings[ISTRING_NEXT]), iObj);
} else {
cosmoV_error(state, "Expected iterable object! '__iter' not defined!");
return -1;
}
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable *)obj;
@ -1059,7 +1021,6 @@ int cosmoV_execute(CState *state)
} else {
cosmoV_error(state, "No proto defined! Couldn't get from type %s",
cosmoO_typeStr(obj));
return -1;
}
}
CASE(OP_NEXT) :
@ -1071,7 +1032,6 @@ int cosmoV_execute(CState *state)
if (!IS_METHOD(*temp)) {
cosmoV_error(state, "Expected '__next' to be a method, got type %s!",
cosmoV_typeStr(*temp));
return -1;
}
cosmoV_pushValue(state, *temp);
@ -1114,7 +1074,6 @@ int cosmoV_execute(CState *state)
} else {
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA),
cosmoV_typeStr(*valB));
return -1;
}
}
CASE(OP_POW) :
@ -1128,7 +1087,6 @@ int cosmoV_execute(CState *state)
} else {
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA),
cosmoV_typeStr(*valB));
return -1;
}
}
CASE(OP_NOT) :
@ -1144,7 +1102,6 @@ int cosmoV_execute(CState *state)
cosmoV_pushNumber(state, -(cosmoV_readNumber(*val)));
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(*val));
return -1;
}
}
CASE(OP_COUNT) :
@ -1153,7 +1110,6 @@ int cosmoV_execute(CState *state)
if (!IS_REF(*temp)) {
cosmoV_error(state, "Expected non-primitive, got %s!", cosmoV_typeStr(*temp));
return -1;
}
int count = cosmoO_count(state, cosmoV_readRef(*temp));
@ -1178,7 +1134,6 @@ int cosmoV_execute(CState *state)
*val = cosmoV_newNumber(cosmoV_readNumber(*val) + inc);
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(*val));
return -1;
}
}
CASE(OP_INCGLOBAL) :
@ -1194,7 +1149,6 @@ int cosmoV_execute(CState *state)
*val = cosmoV_newNumber(cosmoV_readNumber(*val) + inc);
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(*val));
return -1;
}
}
CASE(OP_INCUPVAL) :
@ -1209,7 +1163,6 @@ int cosmoV_execute(CState *state)
*val = cosmoV_newNumber(cosmoV_readNumber(*val) + inc);
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(*val));
return -1;
}
}
CASE(OP_INCINDEX) :
@ -1221,7 +1174,6 @@ int cosmoV_execute(CState *state)
if (!IS_REF(*temp)) {
cosmoV_error(state, "Couldn't index non-indexable type %s!",
cosmoV_typeStr(*temp));
return -1;
}
CObj *obj = cosmoV_readRef(*temp);
@ -1230,27 +1182,23 @@ int cosmoV_execute(CState *state)
// call __index if the proto was found
if (proto != NULL) {
if (cosmoO_indexObject(state, proto, *key, &val)) {
if (!IS_NUMBER(val)) {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
return -1;
}
cosmoO_indexObject(state, proto, *key, &val);
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
if (!IS_NUMBER(val)) {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
}
// call __newindex
if (!cosmoO_newIndexObject(state, proto, *key,
cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
return -1;
} else
return -1; // cosmoO_indexObject failed and threw an error
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
// call __newindex
cosmoO_newIndexObject(state, proto, *key,
cosmoV_newNumber(cosmoV_readNumber(val) + inc));
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable *)obj;
CValue *val = cosmoT_insert(state, &tbl->tbl, *key);
if (!IS_NUMBER(*val)) {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(*val));
return -1;
}
// pops tbl & key from stack
@ -1260,7 +1208,6 @@ int cosmoV_execute(CState *state)
} else {
cosmoV_error(state, "No proto defined! Couldn't __index from type %s",
cosmoV_typeStr(*temp));
return -1;
}
}
CASE(OP_INCOBJECT) :
@ -1275,8 +1222,7 @@ int cosmoV_execute(CState *state)
CObj *obj = cosmoV_readRef(*temp);
CValue val;
if (!cosmoV_rawget(state, obj, ident, &val))
return -1;
cosmoV_rawget(state, obj, ident, &val);
// pop the object off the stack
cosmoV_pop(state);
@ -1284,16 +1230,13 @@ int cosmoV_execute(CState *state)
// check that it's a number value
if (IS_NUMBER(val)) {
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
if (!cosmoV_rawset(state, obj, ident,
cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
return -1;
cosmoV_rawset(state, obj, ident,
cosmoV_newNumber(cosmoV_readNumber(val) + inc));
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
return -1;
}
} else {
cosmoV_error(state, "Couldn't set a field on type %s!", cosmoV_typeStr(*temp));
return -1;
}
}
CASE(OP_EQUAL) :

20
src/cvm.h
View File

@ -67,27 +67,17 @@ COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *
COSMO_API bool cosmoV_undump(CState *state, cosmo_Reader reader, const void *ud);
/*
expects object to be pushed, then the key.
returns false if an error was thrown, returns true if the value was pushed onto the stack and
the object and key were popped
expects object to be pushed, then the key. pops the key & object and pushes the value
*/
COSMO_API bool cosmoV_get(CState *state);
COSMO_API void cosmoV_get(CState *state);
/*
expects object to be pushed, then the key, and finally the new value.
returns false if an error was thrown, returns true if the value was set and the object key, and
value were popped
expects object to be pushed, then the key, and finally the new value. pops the key & object
*/
COSMO_API bool cosmoV_set(CState *state);
COSMO_API void cosmoV_set(CState *state);
// wraps the closure into a CObjMethod, so the function is called as an invoked method
COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val);
// clears the stack, callstack and restores the state into a usable state after a calloverflow or
// another hard to recover error (keeps the global table intact)
COSMO_API bool cosmoV_restore(CState *state);
COSMO_API void cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val);
// nice to have wrappers