minor refactoring, OP_INVOKE performance boost

newtest.cosmo

@@ -1,15 +1,29 @@
 class test
     function __init(self, x)
+        self.setArg(x)
+    end
+
+    function fact(self)
+        var total = 1
+
+        for (var i = self.x; i > 0; i = i - 1) do
+            total = total * i;
+        end
+
+        return total
+    end
+
+    function setArg(self, x)
         self.x = x
     end
-
-    function print(self)
-        print(self.x)
-
-        return self.x
-    end
 end
 
-var t = test("hello")
+var t = test(1)
 
-print(t.print())
+for (var x = 1; x < 1000; x = x + 1) do
+    for (var i = 1; i < 100; i = i + 1) do
+        t.setArg(i)
+
+        print(t.fact())
+    end
+end

src/cbaselib.c

@@ -32,6 +32,7 @@ CValue cosmoB_dsetMeta(CState *state, int nargs, CValue *args) {
 
     return cosmoV_newNil(); // nothing
 }
+
 CValue cosmoB_dgetMeta(CState *state, int nargs, CValue *args) {
     if (nargs != 1) {
         cosmoV_error(state, "Expected 1 parameter, got %d!", nargs);

src/cdebug.c

@@ -114,6 +114,8 @@ int disasmInstr(CChunk *chunk, int offset, int indent) {
             return simpleInstruction("OP_GETOBJECT", offset);
         case OP_SETOBJECT:
             return simpleInstruction("OP_SETOBJECT", offset);
+        case OP_INVOKE:
+            return shortOperandInstruction("OP_INVOKE", chunk, offset);
         case OP_ADD:
             return simpleInstruction("OP_ADD", offset);
         case OP_SUB:

src/cobj.c

@@ -95,7 +95,8 @@ bool cosmoO_equal(CObj* obj1, CObj* obj2) {
 CObjObject *cosmoO_newObject(CState *state) {
     CObjObject *obj = (CObjObject*)cosmoO_allocateBase(state, sizeof(CObjObject), COBJ_OBJECT);
     obj->meta = state->metaObj;
-    cosmoV_pushValue(state, cosmoV_newObj(obj)); // so out GC can keep track of it
+    obj->user = NULL; // reserved for C API
+    cosmoV_pushValue(state, cosmoV_newObj(obj)); // so our GC can keep track of it
     cosmoT_initTable(state, &obj->tbl, ARRAY_START);
     cosmoV_pop(state);
 

src/cobj.h

@@ -13,8 +13,8 @@ typedef enum {
     COBJ_OBJECT,
     COBJ_FUNCTION,
     COBJ_CFUNCTION,
-    COBJ_METHOD,
     // internal use
+    COBJ_METHOD,
     COBJ_CLOSURE,
     COBJ_UPVALUE,
 } CObjType;
@@ -39,6 +39,7 @@ typedef struct CObjString {
 typedef struct CObjObject {
     CommonHeader; // "is a" CObj
     CTable tbl;
+    void *user; // userdata (NULL by default)
     struct CObjObject *meta; // metaobject, describes the behavior of the object
 } CObjObject;
 

src/coperators.h

@@ -32,7 +32,7 @@ typedef enum {
     OP_NEWOBJECT,
     OP_GETOBJECT,
     OP_SETOBJECT,
-    OP_NEWCLASS,
+    OP_INVOKE,
 
     // ARITHMETIC
     OP_ADD, 

src/cparse.c

@@ -153,8 +153,6 @@ static void advance(CParseState *pstate) {
     pstate->previous = pstate->current;
     pstate->current = cosmoL_scanToken(pstate->lex);
 
-    //printf("got %d [%.*s]\n", pstate->current.type, pstate->current.length, pstate->current.start);
-
     if (pstate->current.type == TOKEN_ERROR) {
         // go ahead and consume the rest of the errors so it doesn't cascade
         CToken temp;
@@ -586,6 +584,11 @@ static void dot(CParseState *pstate, bool canAssign) {
         expression(pstate);
         writeu8(pstate, OP_SETOBJECT);
         valuePopped(pstate, 2); // pops key, value & object
+    } else if (match(pstate, TOKEN_LEFT_PAREN)) { // it's an invoked call
+        uint8_t args = parseArguments(pstate);
+        writeu8(pstate, OP_INVOKE);
+        writeu8(pstate, args);
+        valuePopped(pstate, args); // pops the function & the object but pushes a result
     } else {
         writeu8(pstate, OP_GETOBJECT);
         // pops key & object but also pushes the field so total popped is 1
@@ -815,22 +818,7 @@ static void varDeclaration(CParseState *pstate, bool forceLocal) {
             expression(pstate);
         } while (match(pstate, TOKEN_COMMA));
 
-        if (pstate->compiler->pushedValues < pstate->compiler->savedPushed) {
-            writeu8(pstate, OP_NIL); // didn't get expected result
         valuePushed(pstate, 1);
-        }
-
-        valuePushed(pstate, 1);
-    } else if (match(pstate, TOKEN_COMMA)) {
-        valuePopped(pstate, 1); // we are expecting a value
-        varDeclaration(pstate, forceLocal);
-
-        if (pstate->compiler->pushedValues < pstate->compiler->savedPushed) {
-            writeu8(pstate, OP_NIL); // didn't get expected result
-            valuePushed(pstate, 1);
-        }
-
-        valuePushed(pstate, 1); // we already popped, & when we call defineVariable it'll pop, so go ahead and fix it here
     } else {
         writeu8(pstate, OP_NIL);
         valuePushed(pstate, 1);

src/cvalue.h

@@ -7,8 +7,7 @@ typedef enum {
     COSMO_TNIL,
     COSMO_TBOOLEAN,
     COSMO_TNUMBER,
-    COSMO_TOBJ,
-    COSMO_TUSERDATA
+    COSMO_TOBJ
 } CosmoType;
 
 typedef double cosmo_Number;
@@ -21,7 +20,6 @@ typedef struct CValue {
     union {
         cosmo_Number num;
         bool b; // boolean
-        void *ptr; // userdata
         CObj *obj;
     } val;
 } CValue;

src/cvm.c

@@ -87,10 +87,11 @@ void pushCallFrame(CState *state, CObjClosure *closure, int args) {
     frame->closure = closure;
 }
 
-void popCallFrame(CState *state) {
+// offset is the offset of the callframe base we set the state->top back too (useful for passing values in the stack as arguments, like methods)
+void popCallFrame(CState *state, int offset) {
     closeUpvalues(state, state->callFrame[state->frameCount - 1].base); // close any upvalue still open
 
-    state->top = state->callFrame[state->frameCount - 1].base; // resets the stack
+    state->top = state->callFrame[state->frameCount - 1].base + offset; // resets the stack
     state->frameCount--;
 }
 
@@ -112,7 +113,18 @@ typedef enum {
     CALL_CFUNCTION
 } preCallResult;
 
-bool call(CState *state, CObjClosure *closure, int args) {
+static inline void callCFunction(CState *state, CosmoCFunction cfunc, int args, int offset) {
+    StkPtr savedBase = cosmoV_getTop(state, args);
+
+    cosmoM_freezeGC(state); // we don't want a GC event during c api because we don't actually trust the user to know how to evade the GC
+    CValue res = cfunc(state, args, savedBase + 1);
+    cosmoM_unfreezeGC(state);
+    
+    state->top = savedBase + offset;
+    cosmoV_pushValue(state, res);
+}
+
+bool call(CState *state, CObjClosure *closure, int args, int offset) {
     // missmatched args, thats an obvious user error, so error.
     if (args != closure->function->args) {
         cosmoV_error(state, "Expected %d parameters for %s, got %d!", closure->function->args, closure->function->name == NULL ? UNNAMEDCHUNK : closure->function->name->str, args);
@@ -130,7 +142,7 @@ bool call(CState *state, CObjClosure *closure, int args) {
     CValue* result = cosmoV_getTop(state, 0);
 
     // pop the callframe and return result :)
-    popCallFrame(state);
+    popCallFrame(state, offset);
 
     // push the return value back onto the stack
     cosmoV_pushValue(state, *result);
@@ -139,36 +151,10 @@ bool call(CState *state, CObjClosure *closure, int args) {
 
 bool callMethod(CState* state, CObjMethod *method, int args) {
     if (method->isCFunc) {
-        StkPtr savedBase = state->top - args - 1;
-
-        cosmoM_freezeGC(state);
-        CValue res = method->cfunc->cfunc(state, args+1, savedBase);
-        cosmoM_unfreezeGC(state);
-        
-        state->top = savedBase;
-        cosmoV_pushValue(state, res);
+        callCFunction(state, method->cfunc->cfunc, args+1, 1);
     } else {
         CObjClosure *closure = method->closure;
-
-        StkPtr val = state->top - args - 1;
-
-        if (args+1 != closure->function->args) {
-            cosmoV_error(state, "Expected %d parameters for %s, got %d!", closure->function->args, closure->function->name == NULL ? UNNAMEDCHUNK : closure->function->name->str, args+1);
-            return false;
-        }
-        
-        // load function into callframe
-        pushCallFrame(state, closure, closure->function->args);
-
-        // execute
-        if (!cosmoV_execute(state)) 
-            return false;
-        CValue* result = state->top - 1;
-
-        // pop the callframe and return result
-        popCallFrame(state);
-        state->top++;
-        cosmoV_pushValue(state, *result); // and push return value
+        call(state, closure, args+1, 1); // offset = 1 so our stack is properly reset
     }
 
     return true;
@@ -186,7 +172,7 @@ COSMOVMRESULT cosmoV_call(CState *state, int args) {
     switch (val->val.obj->type) {
         case COBJ_CLOSURE: {
             CObjClosure *closure = (CObjClosure*)(val->val.obj);
-            if (!call(state, closure, args)) {
+            if (!call(state, closure, args, 0)) {
                 return COSMOVM_RUNTIME_ERR;
             }
             break;
@@ -223,14 +209,7 @@ COSMOVMRESULT cosmoV_call(CState *state, int args) {
         case COBJ_CFUNCTION: {
             // it's a C function, so call it
             CosmoCFunction cfunc = ((CObjCFunction*)(val->val.obj))->cfunc;
-            CValue *savedBase = state->top - args;
-
-            cosmoM_freezeGC(state); // we don't want a GC event during c api because we don't actually trust the user to know how to evade the GC
-            CValue res = cfunc(state, args, savedBase);
-            cosmoM_unfreezeGC(state);
-
-            state->top = savedBase - 1;
-            cosmoV_pushValue(state, res);
+            callCFunction(state, cfunc, args, 0);
             break;
         }
         default: 
@@ -446,6 +425,37 @@ bool cosmoV_execute(CState *state) {
                 cosmoV_setTop(state, 3);
                 break;
             }
+            case OP_INVOKE: {
+                uint8_t args = READBYTE();
+                StkPtr key = cosmoV_getTop(state, args); // grabs key from stack
+                StkPtr temp = cosmoV_getTop(state, args+1); // grabs object from stack
+
+                // sanity check
+                if (!(temp->type == COSMO_TOBJ) || !(temp->val.obj->type == COBJ_OBJECT)) {
+                    cosmoV_error(state, "Couldn't get from non-object!");
+                    break;
+                }
+
+                CObjObject *object = (CObjObject*)temp->val.obj;
+                CValue val; // to hold our value
+
+                cosmoO_getObject(state, object, *key, &val);
+
+                // now set the key stack location to the object, and call it!
+                *key = *temp;
+                if (IS_CLOSURE(val)) {
+                    call(state, cosmoV_readClosure(val), args+1, 1);
+                } else if (IS_CFUNCTION(val)) {
+                    callCFunction(state, cosmoV_readCFunction(val), args+1, 1);
+                } else {
+                    cosmoV_error(state, "Cannot call non-function value! got %d", val.val.obj->type);
+                }
+
+                // moves return value & resets stack (key now points to the stack location of our return value)
+                *temp = *key;
+                state->top = key;
+                break;
+            }
             case OP_ADD: { // pop 2 values off the stack & try to add them together
                 BINARYOP(cosmoV_newNumber, +);
                 break;

test.cosmo

@@ -15,7 +15,7 @@ class test
 end
 
 var obj = test("Hello world")
-for (var i = 1; i <= 10; i=i+1) do
+for (var i = 1; i <= 1; i=i+1) do
     obj.print(i)
 end