accum-byte-to-string
nazarijtipusak080/accumulate-and-read-character-string/accum-byte-to-string
Accumulates a string of characters (byte) supplied to the CHAR input.
accum-byte-to-string
@/accum-byte-to-string
Accumulates a string of characters (byte) supplied to the CHAR input.
CAPnumber
The capacity of the string buffer. Defines the maximum length. Must be a constant value. Any changes during program execution will be ignored.
CHARbyte
PUSHpulse
Push new character
RSTpulse
Empty the accumulated string and start over
FULLpulse
Pulses when string reached maximum length and pushed character was ignored
UPDpulse
Pulses when resulting string is updated
STRstring
String that is accumulated so far
C++ implementation
node {
char* buff;
char* cursor;
size_t cap;
CStringView view;
void evaluate(Context ctx) {
if (isSettingUp()) {
// save initial cap to ignore possiple input changes during program execution
cap = getValue<input_CAP>(ctx);
buff = new char[cap + 1]; // +1 to make room for terminal '\0'
view = CStringView(buff);
}
if (isSettingUp() || isInputDirty<input_RST>(ctx)) {
memset(buff, '\0', cap + 1);
cursor = buff;
}
if (isInputDirty<input_PUSH>(ctx)) {
if (cursor >= &buff[cap]) {
emitValue<output_FULL>(ctx, 1);
return;
}
*cursor = getValue<input_CHAR>(ctx);
cursor++;
emitValue<output_STR>(ctx, XString(&view));
emitValue<output_UPD>(ctx, 1);
}
}
}