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refactored internal strings

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This commit is contained in:
CPunch 2020-11-12 16:52:56 -06:00
parent 0e92ddea2b
commit 01b796460a
5 changed files with 28 additions and 12 deletions
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4
Makefile
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@ -1,8 +1,8 @@
# make clean && make && ./bin/cosmo
CC=clang
CFLAGS=-fPIE -O3
LDFLAGS=#-fsanitize=address
CFLAGS=-fPIE -g3 #-O3
LDFLAGS=-fsanitize=address
OUT=bin/cosmo
CHDR=\

5
src/cmem.c
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@ -208,7 +208,10 @@ void markRoots(CState *state) {
}
markTable(state, &state->globals);
markObject(state, (CObj*)state->initString);
// mark all internal strings
for (int i = 0; i < INTERNALSTRING_MAX; i++)
markObject(state, (CObj*)state->internalStrings[i]);
traceGrays(state);
}

17
src/cstate.c
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@ -34,8 +34,12 @@ CState *cosmoV_newState() {
cosmoT_initTable(state, &state->strings, 8); // init string table
cosmoT_initTable(state, &state->globals, 8); // init global table
state->initString = NULL;
state->initString = cosmoO_copyString(state, "__init", 6);
// first, set all strings to NULL so our GC doesn't read garbage data
for (int i = 0; i < INTERNALSTRING_MAX; i++)
state->internalStrings[i] = NULL;
// setup all strings used by the VM
state->internalStrings[INTERNALSTRING_INIT] = cosmoO_copyString(state, "__init", 6);
return state;
}
@ -51,11 +55,14 @@ void cosmoV_freeState(CState *state) {
objs = next;
}
// free our string & global table
state->initString = NULL;
// mark our internal VM strings NULL
for (int i = 0; i < INTERNALSTRING_MAX; i++)
state->internalStrings[i] = NULL;
// free our string & global table (the string table includes the internal VM strings)
cosmoT_clearTable(state, &state->strings);
cosmoT_clearTable(state, &state->globals);
// free our gray stack & finally free the state structure
free(state->grayStack);
free(state);

8
src/cstate.h
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@ -12,6 +12,12 @@ typedef struct CCallFrame {
CValue* base;
} CCallFrame;
typedef enum {
INTERNALSTRING_INIT, // __init
INTERNALSTRING_EQUAL, // __equal
INTERNALSTRING_MAX
} InternalStringEnum;
typedef struct CState {
bool panic;
int freezeGC; // when > 0, GC events will be ignored (for internal use)
@ -31,7 +37,7 @@ typedef struct CState {
CCallFrame callFrame[FRAME_MAX]; // call frames
int frameCount;
CObjString *initString;
CObjString *internalStrings[INTERNALSTRING_MAX]; // strings used internally by the VM, eg. __init
} CState;
COSMO_API CState *cosmoV_newState();

6
src/cvm.c
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@ -187,7 +187,7 @@ COSMOVMRESULT cosmoV_call(CState *state, int args) {
CValue ret;
// check if they defined an initalizer
if (cosmoO_getObject(state, metaObj, cosmoV_newObj(state->initString), &ret) && IS_CLOSURE(ret)) {
if (cosmoO_getObject(state, metaObj, cosmoV_newObj(state->internalStrings[INTERNALSTRING_INIT]), &ret) && IS_CLOSURE(ret)) {
CObjClosure *closure = cosmoV_readClosure(ret);
if (args+1 != closure->function->args) {
@ -202,8 +202,8 @@ COSMOVMRESULT cosmoV_call(CState *state, int args) {
if (!cosmoV_execute(state))
return COSMOVM_RUNTIME_ERR;
// we throw away the return result, it's unused
// pop the callframe and return result :)
// we throw away the return result, it's ignored
// pop the callframe and return the new object :)
popCallFrame(state);
state->top++; // adjust stack back into place
} else {