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/* Nujel - Copyright (C) 2020-2022 - Benjamin Vincent Schulenburg
* This project uses the MIT license, a copy should be included under /LICENSE */
#include "../reader.h"
#include "../type/tree.h"
#include "../allocation/symbol.h"
#include "../type/closure.h"
#include "../type/val.h"
#include "../compatibility/getmsecs.h"
#include <time.h>
static lVal *lnfSymbolTable(lClosure *c, lVal *v){
(void)v;
lVal *l = lTreeKeysToList(c->data);
for(lVal *n = l;n;n = n->vList.cdr){
if(n->vList.car == NULL){break;}
n->vList.car->type = ltSymbol;
}
return l;
}
static lVal *lnfClosureParent(lClosure *c, lVal *v){
lClosure *cc = requireClosure(c, lCar(v));
if(cc->parent == NULL){
return NULL;
}else{
lVal *ret = lValAlloc(cc->parent->type == closureObject ? ltObject : ltLambda);
ret->vClosure = cc->parent;
return ret;
}
}
static lVal *lnfClosureCaller(lClosure *c, lVal *v){
lClosure *cc = requireClosure(c, lCar(v));
if(cc->caller == NULL){
return NULL;
}else{
lVal *ret = lValAlloc(cc->caller->type == closureObject ? ltObject : ltLambda);
ret->vClosure = cc->caller;
return ret;
}
}
static lVal *lnfClosureArguments(lClosure *c, lVal *v){
lVal *cc = requireCallable(c, lCar(v));
if(cc->type == ltNativeFunc){
return cc->vNFunc->args;
}else{
return cc->vClosure->args;
}
}
static lVal *lnfClosureCode(lClosure *c, lVal *v){
lClosure *clo = requireClosure(c, lCar(v));
lVal *text = lValAlloc(ltBytecodeArr);
text->vBytecodeArr = clo->text;
return text;
}
static lVal *lnfClosureData(lClosure *c, lVal *v){
lClosure *clo = requireClosure(c, lCar(v));
return lValTree(clo->data);
}
static lVal *lnfClosureName(lClosure *c, lVal *v){
lVal *cc = requireCallable(c, lCar(v));
return lValSymS((cc->type == ltNativeFunc) ? cc->vNFunc->name : cc->vClosure->name);
}
static lVal *lnfResolve(lClosure *c, lVal *v){
const lSymbol *sym = requireSymbol(c, lCar(v));
lVal *env = lCadr(v);
if(env && (env->type != ltLambda) && (env->type != ltObject)){
lExceptionThrowValClo("invalid-environment", "You can only resolve symbols in Lambdas or Objects", env, c);
}
return lGetClosureSym(env ? env->vClosure : c, sym);
}
static lVal *lnfResolvesPred(lClosure *c, lVal *v){
lVal *car = lCar(v);
if(!car || (car->type != ltSymbol)){return lValBool(false);}
const lSymbol *sym = car->vSymbol;
lVal *env = lCadr(v);
if(env && (env->type != ltLambda) && (env->type != ltObject)){
lExceptionThrowValClo("invalid-environment", "You can only resolve symbols in Lambdas or Objects", env, c);
}
return lValBool(lHasClosureSym(env ? env->vClosure : c, sym,NULL));
}
static lVal *lnfCurrentClosure(lClosure *c, lVal *v){
(void)v;
lVal *ret = lValAlloc(ltObject);
ret->vClosure = c;
return ret;
}
static lVal *lnfCurrentLambda(lClosure *c, lVal *v){
(void)v;
lVal *ret = lValAlloc(ltLambda);
ret->vClosure = c;
return ret;
}
static lVal *lnfApply(lClosure *c, lVal *v){
return lApply(c, lCadr(v), lCar(v));
}
static lVal *lnfMacroApply(lClosure *c, lVal *v){
lVal *fun = lCar(v);
if((fun == NULL) || (fun->type != ltMacro)){ lExceptionThrowValClo("type-error", "Can't macro-apply to that", v, c); }
return lLambda(c, lCadr(v), fun);
}
static lVal *lnfCar(lClosure *c, lVal *v){
(void)c;
return lCaar(v);
}
static lVal *lnfCdr(lClosure *c, lVal *v){
(void)c;
return lCdar(v);
}
static lVal *lnfCons(lClosure *c, lVal *v){
if(lCddr(v) != NULL){ lExceptionThrowValClo("too-many-args","Cons should only be called with 2 arguments!", v, c); }
return lCons(lCar(v),lCadr(v));
}
static lVal *lnfNReverse(lClosure *c, lVal *v){
(void)c;
lVal *t = NULL, *l = lCar(v);
while((l != NULL) && (l->type == ltPair)){
lVal *next = l->vList.cdr;
l->vList.cdr = t;
t = l;
l = next;
}
return t;
}
static lVal *lnfTime(lClosure *c, lVal *v){
(void)c;(void)v;
return lValInt(time(NULL));
}
static lVal *lnfTimeMsecs(lClosure *c, lVal *v){
(void)c; (void)v;
return lValInt(getMSecs());
}
static lVal *lnfLess(lClosure *c, lVal *v){
(void)c;
return lValBool(lValGreater(lCar(v), lCadr(v)) < 0);
}
static lVal *lnfUnequal(lClosure *c, lVal *v){
(void)c;
return lValBool(!lValEqual(lCar(v), lCadr(v)));
}
static lVal *lnfEqual(lClosure *c, lVal *v){
(void)c;
return lValBool(lValEqual(lCar(v), lCadr(v)));
}
static lVal *lnfLessEqual(lClosure *c, lVal *v){
(void)c;
lVal *a = lCar(v);
lVal *b = lCadr(v);
return lValBool(lValEqual(a,b) || (lValGreater(a, b) < 0));
}
static lVal *lnfGreater(lClosure *c, lVal *v){
(void)c;
return lValBool(lValGreater(lCar(v), lCadr(v)) > 0);
}
static lVal *lnfGreaterEqual(lClosure *c, lVal *v){
(void)c;
lVal *a = lCar(v);
lVal *b = lCadr(v);
return lValBool(lValEqual(a, b) || (lValGreater(a, b) > 0));
}
static lVal *lnfNilPred(lClosure *c, lVal *v){
(void)c;
return lValBool(lCar(v) == NULL);
}
static lVal *lnfZeroPred(lClosure *c, lVal *v){
(void)c;
lVal *a = lCar(v);
bool p = false;
if(a){
if(a->type == ltInt){
p = a->vInt == 0;
}else if(a->type == ltFloat){
p = a->vFloat == 0.0;
}
}
return lValBool(p);
}
static lVal *lnfQuote(lClosure *c, lVal *v){
if(v->type != ltPair){ lExceptionThrowValClo("invalid-quote","Quote needs a second argument to return, maybe you were trying to use a dotted pair instead of a list?", v, c); }
return lCar(v);
}
static lVal *lnfThrow(lClosure *c, lVal *v){
(void)c;
lExceptionThrowRaw(lCar(v));
return NULL;
}
static lVal *lnfRead(lClosure *c, lVal *v){
return lRead(c, requireString(c, lCar(v))->data);
}
static lVal *lnfTypeOf(lClosure *c, lVal *v){
(void)c;
return lValKeywordS(getTypeSymbol(lCar(v)));
}
static lVal *lnfGarbageCollect(lClosure *c, lVal *v){
(void)c; (void)v;
lGarbageCollect();
return NULL;
}
static lVal *lnfMetaGet(lClosure *c, lVal *v){
const lSymbol *key = requireSymbolic(c, lCadr(v));
lVal *l = requireCallable(c, lCar(v));
if(l->type == ltNativeFunc){
return lTreeGet(l->vNFunc->meta, key, NULL);
}else{
return lTreeGet(l->vClosure->meta, key, NULL);
}
}
static lVal *lnfMetaSet(lClosure *c, lVal *v){
const lSymbol *key = requireSymbolic(c, lCadr(v));
lVal *car = requireCallable(c, lCar(v));
if(car->type == ltNativeFunc){
lExceptionThrowValClo("type-error", "Can't add new metadata to native functions", car, c);
}else{
car->vClosure->meta = lTreeInsert(car->vClosure->meta, key, lCaddr(v));
}
return car;
}
static lVal *lCastFloat(lClosure *c, lVal *v){
typeswitch(v){
default: throwTypeError(c, v, ltFloat);
case ltFloat: return v;
case ltInt: return lValFloat(v->vInt);
}
}
static lVal *lnfFloat(lClosure *c, lVal *v){
return lCastFloat(c,lCar(v));
}
static lVal *lCastInt(lClosure *c, lVal *v){
typeswitch(v){
default: throwTypeError(c, v, ltInt);
case ltInt: return v;
case ltFloat: return lValInt(v->vFloat);
}
}
static lVal *lnfInt(lClosure *c, lVal *v){
return lCastInt(c, lCar(v));
}
static lVal *lnfBool(lClosure *c, lVal *v){
(void)c;
return lValBool(castToBool(lCar(v)));
}
static lVal *lnfSymbolToKeyword(lClosure *c, lVal *v){
return lValKeywordS(requireSymbol(c, lCar(v)));
}
static lVal *lnfKeywordToSymbol(lClosure *c, lVal *v){
return lValSymS(requireKeyword(c, lCar(v)));
}
void lOperationsCore(lClosure *c){
lAddNativeFunc(c,"quote", "[v]", "Return v as is without evaluating", lnfQuote);
lAddNativeFunc(c,"throw", "[v]", "Throw V to the closest exception handler", lnfThrow);
lAddNativeFunc(c,"read", "[str]", "Read and Parses STR as an S-Expression", lnfRead);
lAddNativeFunc(c,"resolve", "[sym environment]", "Resolve SYM until it is no longer a symbol", lnfResolve);
lAddNativeFunc(c,"resolves?", "[sym environment]", "Check if SYM resolves to a value", lnfResolvesPred);
lAddNativeFunc(c,"meta", "[v key]", "Retrieve KEY from V's metadata", lnfMetaGet);
lAddNativeFunc(c,"meta!", "[v key meta-value]", "Set KEY to META-VALUE in V's metadata", lnfMetaSet);
lAddNativeFunc(c,"closure/data", "[clo]", "Return the data of CLO", lnfClosureData);
lAddNativeFunc(c,"closure/code", "[clo]", "Return the code of CLO", lnfClosureCode);
lAddNativeFunc(c,"closure/name", "[clo]", "Return the name of CLO", lnfClosureName);
lAddNativeFunc(c,"closure/arguments","[clo]", "Return the argument list of CLO", lnfClosureArguments);
lAddNativeFunc(c,"closure/parent", "[clo]", "Return the parent of CLO", lnfClosureParent);
lAddNativeFunc(c,"closure/caller", "[clo]", "Return the caller of CLO", lnfClosureCaller);
lAddNativeFunc(c,"current-closure", "[]", "Return the current closure as an object", lnfCurrentClosure);
lAddNativeFunc(c,"current-lambda", "[]", "Return the current closure as a lambda", lnfCurrentLambda);
lAddNativeFunc(c,"symbol-table*", "[]", "Return a list of all symbols defined, accessible from the current closure",lnfSymbolTable);
lAddNativeFunc(c,"apply", "[func list]", "Evaluate FUNC with LIST as arguments", lnfApply);
lAddNativeFunc(c,"macro-apply", "[macro list]", "Evaluate MACRO with LIST as arguments", lnfMacroApply);
lAddNativeFunc(c,"car", "[list]", "Returs the head of LIST", lnfCar);
lAddNativeFunc(c,"cdr", "[list]", "Return the rest of LIST", lnfCdr);
lAddNativeFunc(c,"cons", "[car cdr]", "Return a new pair of CAR and CDR", lnfCons);
lAddNativeFunc(c,"nreverse","[list]", "Return LIST in reverse order, fast but mutates", lnfNReverse);
lAddNativeFunc(c,"time", " []", "Return the current unix time",lnfTime);
lAddNativeFunc(c,"time/milliseconds","[]", "Return monotonic msecs",lnfTimeMsecs);
lAddNativeFunc(c,"<", "[α β]", "Return true if α is less than β", lnfLess);
lAddNativeFunc(c,"<=", "[α β]", "Return true if α is less or equal to β", lnfLessEqual);
lAddNativeFunc(c,"= ==", "[α β]", "Return true if α is equal to β", lnfEqual);
lAddNativeFunc(c,"not=", "[α β]", "Return true if α is not equal to β", lnfUnequal);
lAddNativeFunc(c,">=", "[α β]", "Return true if α is greater or equal than β", lnfGreaterEqual);
lAddNativeFunc(c,">", "[α β]", "Return true if α is greater than β", lnfGreater);
lAddNativeFunc(c,"nil?", "[α]", "Return true if α is #nil", lnfNilPred);
lAddNativeFunc(c,"zero?", "[α]", "Return true if α is 0", lnfZeroPred);
lAddNativeFunc(c,"garbage-collect", "[]", "Force the garbage collector to run", lnfGarbageCollect);
lAddNativeFunc(c,"type-of", "[α]", "Return a symbol describing the type of α", lnfTypeOf);
lAddNativeFunc(c,"bool", "[α]", "Convert α into a boolean value, true or false", lnfBool);
lAddNativeFunc(c,"int", "[α]", "Convert α into an integer number", lnfInt);
lAddNativeFunc(c,"float", "[α]", "Convert α into a floating-point number", lnfFloat);
lAddNativeFunc(c,"string", "[α]", "Convert α into a printable and readable string", lnfCat);
lAddNativeFunc(c,"symbol->keyword", "[α]", "Convert symbol α into a keyword", lnfSymbolToKeyword);
lAddNativeFunc(c,"keyword->symbol", "[α]", "Convert keyword α into a symbol", lnfKeywordToSymbol);
}
