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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 */
#ifndef NUJEL_AMALGAMATION
#include "../nujel-private.h"
#endif
#include <time.h>
#include <inttypes.h>
static lVal lTreeAddSymbolsToList(const lTree *t, lVal list){
if(unlikely((t == NULL) || (t->key == NULL))){return list;}
list = lTreeAddSymbolsToList(t->right, list);
list = lCons(lValSymS(t->key), list);
return lTreeAddSymbolsToList(t->left, list);
}
static lVal lSymbolTable(lClosure *c, lVal ret){
if(unlikely(c == NULL)){return ret;}
return lSymbolTable(c->parent, lTreeAddSymbolsToList(c->data, ret));
}
static lVal lnfSymbolTable(lClosure *c, lVal v){
(void)v;
return lSymbolTable(c, NIL);
}
static lVal lnfClosureParent(lClosure *c, lVal v){
lClosure *cc = requireClosure(c, lCar(v));
if(cc->parent == NULL){
return NIL;
}else{
lVal ret = lValAlloc(cc->parent->type == closureObject ? ltEnvironment : ltLambda);
ret.vClosure = cc->parent;
return ret;
}
}
static lVal lnfClosureCaller(lClosure *c, lVal v){
lClosure *cc = requireClosure(c, lCar(v));
if((cc == NULL) || (cc->caller == NULL)){
return NIL;
}else{
lVal ret = lValAlloc(cc->caller->type == closureObject ? ltEnvironment : 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 clo ? lValTree(clo->data) : NIL;
}
static lVal lnfDefIn(lClosure *c, lVal v){
const lSymbol *sym = requireSymbol(c, lCadr(v));
lVal env = lCar(v);
if(unlikely((env.type != ltLambda) && (env.type != ltEnvironment))){
lExceptionThrowValClo("invalid-environment", "You can only define symbols in Lambdas or Objects", env, c);
}
lDefineClosureSym(env.vClosure, sym, lCaddr(v));
return env;
}
static lVal lnfResolve(lClosure *c, lVal v){
const lSymbol *sym = requireSymbol(c, lCar(v));
lVal env = lCadr(v);
if(unlikely((env.type != ltNil) && (env.type != ltLambda) && (env.type != ltEnvironment))){
lExceptionThrowValClo("invalid-environment", "You can only resolve symbols in Lambdas or Objects", env, c);
}
return lGetClosureSym(env.type != ltNil ? env.vClosure : c, sym);
}
static lVal lnfResolveOrNull(lClosure *c, lVal v){
const lSymbol *sym = requireSymbol(c, lCar(v));
lVal env = lCadr(v);
if(unlikely((env.type != ltNil) && (env.type != ltLambda) && (env.type != ltEnvironment))){
lExceptionThrowValClo("invalid-environment", "You can only resolve-or-nil symbols in Lambdas or Objects", env, c);
}
lVal ret;
if(lHasClosureSym(env.type != ltNil ? env.vClosure : c, sym, &ret)){
return ret;
}else{
return NIL;
}
}
static lVal lnfResolvesPred(lClosure *c, lVal v){
lVal car = lCar(v);
if(car.type != ltSymbol){return lValBool(false);}
const lSymbol *sym = car.vSymbol;
lVal env = lCadr(v);
if((env.type != ltNil) && (env.type != ltLambda) && (env.type != ltEnvironment)){
lExceptionThrowValClo("invalid-environment", "You can only check symbols in Lambdas or Objects", env, c);
}
return lValBool(lHasClosureSym(env.type != ltNil ? env.vClosure : c, sym,NULL));
}
static lVal lnfCurrentClosure(lClosure *c, lVal v){
(void)v;
lVal ret = lValAlloc(ltEnvironment);
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, requirePair(c, lCadr(v)), lCar(v));
}
static lVal lnfMacroApply(lClosure *c, lVal v){
lVal fun = lCar(v);
if(unlikely(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(unlikely(lCddr(v).type != ltNil)){
lExceptionThrowValClo("arity-error","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 = NIL, l = lCar(v);
while(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).type == ltNil);
}
static lVal lnfZeroPred(lClosure *c, lVal v){
(void)c;
lVal a = lCar(v);
bool p = false;
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(unlikely(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 NIL;
}
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 NIL;
}
static lVal lnfGarbageCollectRuns(lClosure *c, lVal v){
(void)c; (void)v;
return lValInt(lGCRuns);
}
static lVal lnfMetaGet(lClosure *c, lVal v){
const lSymbol *key = requireSymbolic(c, lCadr(v));
lVal l = lCar(v);
typeswitch(l){
case ltNativeFunc:
return lTreeGet(l.vNFunc->meta, key, NULL);
case ltLambda:
case ltEnvironment:
return lTreeGet(l.vClosure->meta, key, NULL);
default:
return NIL;
}
}
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(c, 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 lnfSymbolToKeyword(lClosure *c, lVal v){
return lValKeywordS(requireSymbol(c, lCar(v)));
}
static lVal lnfKeywordToSymbol(lClosure *c, lVal v){
return lValSymS(requireKeyword(c, lCar(v)));
}
static i64 lValToId(lVal v){
typeswitch(v){
default: return 0;
case ltEnvironment:
case ltMacro:
case ltLambda: return v.vClosure - lClosureList;
case ltBufferView: return v.vBufferView - lBufferViewList;
case ltString:
case ltBuffer: return v.vBuffer - lBufferList;
case ltArray: return v.vArray - lArrayList;
case ltTree: return v.vTree - lTreeRootList;
case ltBytecodeArr: return v.vBytecodeArr - lBytecodeArrayList;
case ltKeyword:
case ltSymbol: return v.vSymbol - lSymbolList;
case ltFileHandle: return fileno(v.vFileHandle);
case ltNativeFunc: return v.vNFunc - lNFuncList;
}
}
static lVal lnfValToId(lClosure *c, lVal v){
(void)c;
return lValInt(lValToId(lCar(v)));
}
static lVal lnfString(lClosure *c, lVal v){
char buf[64];
int snret;
lVal a = lCar(v);
typeswitch(a){
default:
lExceptionThrowValClo("type-error", "Can't convert that into a string", a, c);
return NIL;
case ltNil:
return lValString("");
case ltBuffer:
return lValStringLen(a.vBuffer->data, a.vBuffer->length);
case ltString:
return a;
case ltKeyword:
snret = snprintf(buf,sizeof(buf),":%s",a.vSymbol->c);
break;
case ltSymbol:
snret = snprintf(buf,sizeof(buf),"%s",a.vSymbol->c);
break;
case ltInt:
snret = snprintf(buf,sizeof(buf),"%" PRId64, a.vInt);
break;
case ltFloat: {
snret = snprintf(buf,sizeof(buf),"%f", a.vFloat);
if(snret < 0){exit(5);}
buf[snret--] = 0;
for(;(snret > 0) && (buf[snret] == '0');snret--){}
if(buf[snret] == '.'){snret++;}
snret++;
break; }
}
if(snret < 0){exit(5);}
buf[snret] = 0;
return lValStringLen(buf,snret);
}
static lVal lnfStrSym(lClosure *c, lVal v){
return lValSym(requireString(c, lCar(v))->data);
}
void lOperationsCore(lClosure *c){
lAddNativeFuncPure(c,"quote", "(v)", "Return v as is without evaluating", lnfQuote);
lAddNativeFuncPure(c,"read", "(str)", "Read and Parses STR as an S-Expression", lnfRead);
lAddNativeFunc (c,"throw", "(v)", "Throw V to the closest exception handler", lnfThrow);
lAddNativeFunc(c,"def-in!", "(environment sym v)", "Define SYM to be V in ENVIRONMENT", lnfDefIn);
lAddNativeFunc(c,"resolve", "(sym environment)", "Resolve SYM", lnfResolve);
lAddNativeFunc(c,"resolve-or-nil","(sym environment)", "Resolve SYM, or return #nil if it's undefined", lnfResolveOrNull);
lAddNativeFunc(c,"resolves?", "(sym environment)", "Check if SYM resolves to a value", lnfResolvesPred);
lAddNativeFunc(c,"val->id", "(v)", "Generate some sort of ID value for V, mainly used in [write)", lnfValToId);
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/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);
lAddNativeFuncPure(c,"car", "(list)", "Return the head of LIST", lnfCar);
lAddNativeFuncPure(c,"cdr", "(list)", "Return the rest of LIST", lnfCdr);
lAddNativeFuncPure(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);
lAddNativeFuncPure(c,"<", "(α β)", "Return true if α is less than β", lnfLess);
lAddNativeFuncPure(c,"<=", "(α β)", "Return true if α is less or equal to β", lnfLessEqual);
lAddNativeFuncPure(c,"= ==", "(α β)", "Return true if α is equal to β", lnfEqual);
lAddNativeFuncPure(c,"not=", "(α β)", "Return true if α is not equal to β", lnfUnequal);
lAddNativeFuncPure(c,">=", "(α β)", "Return true if α is greater or equal than β", lnfGreaterEqual);
lAddNativeFuncPure(c,">", "(α β)", "Return true if α is greater than β", lnfGreater);
lAddNativeFuncPure(c,"nil?", "(α)", "Return true if α is #nil", lnfNilPred);
lAddNativeFuncPure(c,"zero?", "(α)", "Return true if α is 0", lnfZeroPred);
lAddNativeFunc(c,"garbage-collect", "()", "Force the garbage collector to run", lnfGarbageCollect);
lAddNativeFunc(c,"garbage-collection-runs", "()", "Return the amount of times the GC ran since runtime startup", lnfGarbageCollectRuns);
lAddNativeFuncPure(c,"type-of", "(α)", "Return a symbol describing the type of α", lnfTypeOf);
lAddNativeFuncPure(c,"int", "(α)", "Convert α into an integer number", lnfInt);
lAddNativeFuncPure(c,"float", "(α)", "Convert α into a floating-point number", lnfFloat);
lAddNativeFuncPure(c,"string", "(α)", "Convert α into a printable and readable string", lnfString);
lAddNativeFuncPure(c,"symbol->keyword", "(α)", "Convert symbol α into a keyword", lnfSymbolToKeyword);
lAddNativeFuncPure(c,"keyword->symbol", "(α)", "Convert keyword α into a symbol", lnfKeywordToSymbol);
lAddNativeFuncPure(c,"string->symbol", "(str)", "Convert STR to a symbol", lnfStrSym);
}
