Cleanup and a couple (micro) optimizations.

src/env.c

@@ -56,11 +56,9 @@ Object fetchFromEnvironment(const char* name, struct Environment* env)
     return errorWithContext(DID_NOT_FIND_SYMBOL, name);
 }
 
-struct Environment envForLambda(const Object* params, const Object* arg_forms,
+struct Environment envForLambda(const Object* params, const Object* arg_forms, int paramCount,
                                 struct Environment* outer)
 {
-    int paramCount = listLength(params);
-
     if (outer) {
         outer->refs += 1;
     }

src/env.h

@@ -25,7 +25,7 @@ void setGlobal(struct Environment* env);
 
 Object fetchFromEnvironment(const char* name, struct Environment* env);
 
-struct Environment envForLambda(const Object* params, const Object* arg_forms,
+struct Environment envForLambda(const Object* params, const Object* arg_forms, int paramCount,
                                 struct Environment* outer);
 
 void addToEnv(struct Environment* env, const char* name, Object obj);

src/object.c

@@ -50,10 +50,6 @@ int listLength(const Object* listObj)
  */
 Object* itemAt(const Object* listObj, int n)
 {
-    if (!listObj || !isListy(*listObj)) {
-        return NULL;
-    }
-
     FOR_POINTER_IN_LIST(listObj) {
         if (n-- == 0) {
             return POINTER;
@@ -80,46 +76,6 @@ Object* tail(const Object* listObj)
     return tail;
 }
 
-/**
- * Checks if a given object is empty.
- *
- * BOOL, NUMBER, and ERROR types return true only when 0
- * LIST, LAMBDA, and FUNC types return true only when NULL
- * SYMBOL returns true only when it begins with a nullchar
- * @param obj A pointer to the object to check
- * @return True only if the non-null Object is empty/non-zero
- */
-inline int isEmpty(const Object* obj)
-{
-    if (obj == NULL) {
-        return 0;
-    }
-
-    switch (obj->type) {
-        case TYPE_NUMBER:
-        case TYPE_BOOL:
-            return obj->number == 0;
-        case TYPE_LIST:
-        case TYPE_SLIST:
-            return obj->list == NULL;
-        case TYPE_LAMBDA:
-            return obj->lambda == NULL;
-        case TYPE_STRUCT:
-            return obj->structObject == NULL;
-        case TYPE_SYMBOL:
-        case TYPE_STRING:
-            return obj->string == NULL || obj->string[0] == '\0';
-        case TYPE_FUNC:
-            return obj->func == NULL;
-        case TYPE_OTHER:
-            return obj->other == NULL;
-        case TYPE_ERROR:
-            return getErrorCode(*obj);
-    }
-
-    return 0;
-}
-
 int allocations = 0;
 
 int getAllocations()
@@ -153,19 +109,18 @@ void allocObject(Object** spot, const Object src)
  * Does nothing if `dest` is NULL or not a list type
  * @param dest The list to append to
  * @param src The Object to copy into the list
+ * @returns A pointer to the tail of the destination list
  */
-void nf_addToList(Object* dest, const Object src)
+Object* nf_addToList(Object* dest, const Object src)
 {
-    if (!dest || !isListy(*dest)) {
+    if (dest->list == NULL) {
-        return;
-    }
-
-    if (isEmpty(dest)) {
         allocObject(&dest->list, src);
-        return;
+        return dest->list;
     }
 
-    allocObject(&tail(dest)->forward, src);
+    Object* listTail = tail(dest);
+    allocObject(&listTail->forward, src);
+    return listTail->forward;
 }
 
 #ifndef SIMPLE_ERRORS
@@ -199,9 +154,6 @@ static const char* errorText[] = {"MISMATCHED_PARENS",
  */
 int stringList(char* dest, const Object* obj)
 {
-    if (!dest || !isListy(*obj)) {
-        return 0;
-    }
     const char* initial = dest;
 
     dest += sprintf(dest, "(");
@@ -503,11 +455,6 @@ void printAndClean(Object* target)
  */
 void deleteList(Object* dest)
 {
-    if (!isListy(*dest)) {
-        printf("Tried to delete something other than a list\n");
-        return;
-    }
-
     Object* march = dest->list;
     while (march != NULL) {
         Object* prevMarch = march;

src/object.h

@@ -144,7 +144,7 @@ int isEmpty(const Object* obj);
 
 Object* tail(const Object* listObj);
 
-void nf_addToList(Object* dest, Object src);
+Object* nf_addToList(Object* dest, Object src);
 
 void deleteList(Object* dest);
 

src/pebblisp.c

@@ -103,12 +103,12 @@ Object evalMapArgs(const Object* argForms, struct Environment* env)
 
     Object lambda = eval(argForms, env);
     const Object* inputList = argForms->forward;
-    Object outputList = listObject();
 
     if (lambda.type != TYPE_LAMBDA) {
         return errorObject(BAD_TYPE);
     }
 
+    Object outputList = listObject();
     if (inputList) {
         FOR_POINTER_IN_LIST(inputList) {
             // Create a new list for each element,
@@ -116,7 +116,7 @@ Object evalMapArgs(const Object* argForms, struct Environment* env)
             Object tempInput = cloneObject(*POINTER);
 
             Object* params = &lambda.lambda->params;
-            struct Environment newEnv = envForLambda(params, &tempInput, env);
+            struct Environment newEnv = envForLambda(params, &tempInput, listLength(params), env);
 
             // Add the lambda evaluation to the list
             Object lambda_output = eval(&lambda.lambda->body, &newEnv);
@@ -208,11 +208,11 @@ Object simpleFuncEval(const Object func, Object arg1, Object arg2, struct Enviro
  * @param remaining The first element after `lambda`
  * @param env The environment to evaluate in
  */
-Object listEvalLambda(Object* lambda, const Object* remaining,
+Object listEvalLambda(Object* lambda, const Object* remaining, int evalLength,
                       struct Environment* env)
 {
     struct Environment newEnv =
-        envForLambda(&lambda->lambda->params, remaining, env);
+        envForLambda(&lambda->lambda->params, remaining, evalLength - 1, env);
     Object ret = eval(&lambda->lambda->body, &newEnv);
     deleteEnv(&newEnv);
     cleanObject(lambda);
@@ -278,15 +278,16 @@ Object evalList(const Object* obj, struct Environment* env)
             return listEvalFunc(obj, &first_eval, evalLength - 1, env);
 
         case TYPE_LAMBDA:
-            return listEvalLambda(&first_eval, first_form->forward, env);
+            return listEvalLambda(&first_eval, first_form->forward, evalLength, env);
 
         default: { // Return list with each element evaluated
             Object list = listObject();
             int i = 0;
-            nf_addToList(&list, first_eval);
+            Object* t = nf_addToList(&list, first_eval);
             FOR_POINTER_IN_LIST(obj) {
                 if (i != 0) {
-                    nf_addToList(&list, eval(POINTER, env));
+                    allocObject(&t->forward, eval(POINTER, env));
+                    t = t->forward;
                 }
                 i++;
             }
@@ -319,15 +320,6 @@ Object eval(const Object* obj, struct Environment* env)
     return errorObject(BAD_TYPE);
 }
 
-void copySlice(char* dest, struct Slice* src)
-{
-    if (!dest || !src) {
-        return;
-    }
-    strncpy(dest, src->text, src->length);
-    dest[(int) src->length] = '\0';
-}
-
 Object possessive(Object* params, int length, struct Environment* env)
 {
     Object structo = params[0];
@@ -510,19 +502,6 @@ Object parseEval(const char* input, struct Environment* env)
         return symFromSlice(" ", 1);
     }
 
-#ifdef DEBUG
-    struct Slice *debug = tokens;
-    printd("start slice\n");
-    if (debug) {
-        while (debug->text) {
-            char tok[100];
-            copySlice(tok, debug);
-            printd("slice: '%s'\n", tok);
-            debug++;
-        }
-    }
-#endif
-
     int i = 0;
     int parens = 0;
     Object obj = numberObject(0);

src/pebblisp.h

@@ -54,7 +54,7 @@ void copySlice(char* dest, struct Slice* src);
 
 Object evalLambdaArgs(const Object* arg_forms, struct Environment* env);
 
-Object listEvalLambda(Object* lambda, const Object* remaining,
+Object listEvalLambda(Object* lambda, const Object* remaining, int evalLength,
                       struct Environment* env);
 
 Object simpleFuncEval(Object func, Object arg1, Object arg2, struct Environment* env);

src/plfunc.c

@@ -3,7 +3,8 @@
 
 #include "plfunc.h"
 
-Object typeCheck(const char* funcName, Object* params, int length, int (*typeChecks[])(Object), int typeLength, int* failed)
+Object typeCheck(const char* funcName, Object* params, int length,
+                 int (* typeChecks[])(Object), int typeLength, int* failed)
 {
     *failed = 1;
     if ((typeLength - 1) > length) {
@@ -76,7 +77,7 @@ Object filter(Object* params, int length, struct Environment* env)
         Object cloned = cloneObject(condition);
         Object first_eval = eval(&cloned, env);
         Object testee = cloneObject(*POINTER);
-        Object e = listEvalLambda(&first_eval, &testee, env);
+        Object e = listEvalLambda(&first_eval, &testee, 2, env);
         if (e.number) {
             nf_addToList(&filtered, testee); // May need to re-clone testee?
         }

src/web.c

@@ -86,7 +86,7 @@ answer_to_connection(void* cls, struct MHD_Connection* connection,
             //res.structObject->fields[0] = queryParams;
             Object route = cloneObject(routes[i].routeAction);
 
-            Object result = listEvalLambda(&route, &res, routes[i].env);
+            Object result = listEvalLambda(&route, &res, 2, routes[i].env);
             cleanObject(&res);
             page = result.string;
             break;