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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 <math.h>
#include <stdlib.h>
#include <string.h>
/* Checks if A is greater than B, returns 0 if the two values can't be compared
| or if they are equal.
*/
i64 lValGreater(const lVal a, const lVal b){
if(unlikely(a.type != b.type)){
if((a.type == ltInt) && (b.type == ltFloat)){
return (((float)a.vInt) < b.vFloat)
? -1
: (((float)a.vInt) > b.vFloat)
? 1
: 0;
} else if ((a.type == ltFloat) && (b.type == ltInt)) {
return (a.vFloat < ((float)b.vInt))
? -1
: (a.vFloat > ((float)b.vInt))
? 1
: 0;
}
return 0;
}
switch(a.type){
default:
return 0;
case ltKeyword:
case ltSymbol: {
const uint alen = strnlen(a.vSymbol->c, sizeof(a.vSymbol->c));
const uint blen = strnlen(b.vSymbol->c, sizeof(b.vSymbol->c));
const uint len = MIN(alen,blen);
const char *ab = a.vSymbol->c;
const char *bb = b.vSymbol->c;
for(uint i=0;i<len;i++){
const u8 ac = *ab++;
const u8 bc = *bb++;
if(ac != bc){
return ac - bc;
}
}
return alen - blen;
}
case ltInt:
return a.vInt - b.vInt;
case ltFloat:
return a.vFloat < b.vFloat ? -1 : 1;
case ltString: {
const uint alen = lStringLength(a.vString);
const uint blen = lStringLength(b.vString);
const uint len = MIN(alen,blen);
const char *ab = a.vString->data;
const char *bb = b.vString->data;
for(uint i=0;i<len;i++){
const u8 ac = *ab++;
const u8 bc = *bb++;
if(ac != bc){
return ac - bc;
}
}
return alen - blen;
}}
}
/* Check two values for equality */
bool lValEqual(const lVal a, const lVal b){
if(unlikely(a.type != b.type)){
if((a.type == ltInt) && (b.type == ltFloat)){
return ((float)a.vInt) == b.vFloat;
} else if ((a.type == ltFloat) && (b.type == ltInt)) {
return a.vFloat == ((float)b.vInt);
}
return false;
} else if(unlikely(a.type == ltString)){
const uint alen = lStringLength(a.vString);
const uint blen = lStringLength(b.vString);
return (alen == blen) && (strncmp(a.vString->data, b.vString->data, alen) == 0);
}
return a.vPointer == b.vPointer;
}
