/*JSON{
"type" : "method",
"class" : "ArrayBufferView",
"name" : "set",
"generate" : "jswrap_arraybufferview_set",
"params" : [
["arr","JsVar","Floating point index to access"],
["offset","int32","The offset in this array at which to write the values (optional)"]
]
}
Copy the contents of `array` into this one, mapping `this[x+offset]=array[x];`
*/
void jswrap_arraybufferview_set(JsVar *parent, JsVar *arr, int offset) {
if (!(jsvIsString(arr) || jsvIsArray(arr) || jsvIsArrayBuffer(arr))) {
jsExceptionHere(JSET_ERROR, "Expecting first argument to be an array, not %t", arr);
return;
}
JsvIterator itsrc;
jsvIteratorNew(&itsrc, arr);
JsvArrayBufferIterator itdst;
jsvArrayBufferIteratorNew(&itdst, parent, (size_t)offset);
bool useInts = !JSV_ARRAYBUFFER_IS_FLOAT(itdst.type) || jsvIsString(arr);
while (jsvIteratorHasElement(&itsrc) && jsvArrayBufferIteratorHasElement(&itdst)) {
if (useInts) {
jsvArrayBufferIteratorSetIntegerValue(&itdst, jsvIteratorGetIntegerValue(&itsrc));
} else {
JsVar *value = jsvIteratorGetValue(&itsrc);
jsvArrayBufferIteratorSetValue(&itdst, value);
jsvUnLock(value);
}
jsvArrayBufferIteratorNext(&itdst);
jsvIteratorNext(&itsrc);
}
jsvArrayBufferIteratorFree(&itdst);
jsvIteratorFree(&itsrc);
}
void jsvArrayBufferIteratorSetValue(JsvArrayBufferIterator *it, JsVar *value) {
if (it->type == ARRAYBUFFERVIEW_UNDEFINED) return;
assert(!it->hasAccessedElement); // we just haven't implemented this case yet
char data[8];
int i,dataLen = (int)JSV_ARRAYBUFFER_GET_SIZE(it->type);
if (JSV_ARRAYBUFFER_IS_FLOAT(it->type)) {
jsvArrayBufferIteratorFloatToData(data, (unsigned)dataLen, it->type, jsvGetFloat(value));
} else {
jsvArrayBufferIteratorIntToData(data, (unsigned)dataLen, it->type, jsvGetInteger(value));
}
if (it->type & ARRAYBUFFERVIEW_BIG_ENDIAN) {
for (i=dataLen-1;i>=0;i--) {
jsvStringIteratorSetChar(&it->it, data[i]);
if (dataLen!=1) jsvStringIteratorNext(&it->it);
}
} else {
for (i=0;i<dataLen;i++) {
jsvStringIteratorSetChar(&it->it, data[i]);
if (dataLen!=1) jsvStringIteratorNext(&it->it);
}
}
if (dataLen!=1) it->hasAccessedElement = true;
}
void jsvArrayBufferIteratorSetValue(JsvArrayBufferIterator *it, JsVar *value) {
if (it->type == ARRAYBUFFERVIEW_UNDEFINED) return;
assert(!it->hasAccessedElement); // we just haven't implemented this case yet
char data[8];
unsigned int i,dataLen = JSV_ARRAYBUFFER_GET_SIZE(it->type);
if (JSV_ARRAYBUFFER_IS_FLOAT(it->type)) {
JsVarFloat v = jsvGetFloat(value); ;
if (dataLen==4) { float f = (float)v; memcpy(data,&f,dataLen); }
else if (dataLen==8) { double f = (double)v; memcpy(data,&f,dataLen); }
else assert(0);
} else {
JsVarInt v = jsvGetInteger(value);
// we don't care about sign when writing - as it gets truncated
if (dataLen==1) { char c = (char)v; memcpy(data,&c,dataLen); }
else if (dataLen==2) { short c = (short)v; memcpy(data,&c,dataLen); }
else if (dataLen==4) { int c = (int)v; memcpy(data,&c,dataLen); }
else if (dataLen==8) { long long c = (long long)v; memcpy(data,&c,dataLen); }
else assert(0);
}
for (i=0;i<dataLen;i++) {
jsvStringIteratorSetChar(&it->it, data[i]);
if (dataLen!=1) jsvStringIteratorNext(&it->it);
}
if (dataLen!=1) it->hasAccessedElement = true;
}
JsVarFloat jsvArrayBufferIteratorGetFloatValue(JsvArrayBufferIterator *it) {
if (it->type == ARRAYBUFFERVIEW_UNDEFINED) return 0;
char data[8];
jsvArrayBufferIteratorGetValueData(it, data);
if (JSV_ARRAYBUFFER_IS_FLOAT(it->type)) {
return jsvArrayBufferIteratorDataToFloat(it, data);
} else {
return (JsVarFloat)jsvArrayBufferIteratorDataToInt(it, data);
}
}
JsVar *jsvArrayBufferIteratorGetValue(JsvArrayBufferIterator *it) {
if (it->type == ARRAYBUFFERVIEW_UNDEFINED) return 0;
char data[8];
jsvArrayBufferIteratorGetValueData(it, data);
if (JSV_ARRAYBUFFER_IS_FLOAT(it->type)) {
return jsvNewFromFloat(jsvArrayBufferIteratorDataToFloat(it, data));
} else {
JsVarInt i = jsvArrayBufferIteratorDataToInt(it, data);
if (it->type == ARRAYBUFFERVIEW_UINT32)
return jsvNewFromLongInteger((long long)(uint32_t)i);
return jsvNewFromInteger(i);
}
}
void jsvArrayBufferIteratorSetIntegerValue(JsvArrayBufferIterator *it, JsVarInt v) {
if (it->type == ARRAYBUFFERVIEW_UNDEFINED) return;
assert(!it->hasAccessedElement); // we just haven't implemented this case yet
char data[8];
unsigned int i,dataLen = JSV_ARRAYBUFFER_GET_SIZE(it->type);
if (JSV_ARRAYBUFFER_IS_FLOAT(it->type)) {
jsvArrayBufferIteratorFloatToData(data, dataLen, it->type, (JsVarFloat)v);
} else {
jsvArrayBufferIteratorIntToData(data, dataLen, it->type, v);
}
for (i=0;i<dataLen;i++) {
jsvStringIteratorSetChar(&it->it, data[i]);
if (dataLen!=1) jsvStringIteratorNext(&it->it);
}
if (dataLen!=1) it->hasAccessedElement = true;
}