parse-u32
xod/stream/parse-u32
Read an unsigned integer number from a stream of characters and returns it as 4 bytes. Stop when a non-numeric character was encountered
parse-u32
@/parse-u32
Read an unsigned integer number from a stream of characters and returns it as 4 bytes. Stop when a non-numeric character was encountered
CHARbyte
The next character to be processed
PUSHpulse
Push a new character to process
RSTpulse
Reset the parsed unsigned integer to 0 and start over
ENDpulse
Pulses when the non-numerical character was encountered
B1byte
B0byte
Least significant byte
B2byte
B3byte
Most significant byte
C++ implementation
node {
uint32_t n = 0;
bool isDone = false;
void evaluate(Context ctx) {
if (isInputDirty<input_RST>(ctx)) {
isDone = false;
n = 0;
}
if (!isInputDirty<input_PUSH>(ctx) || isDone)
return;
auto c = getValue<input_CHAR>(ctx);
if (c >= '0' && c <= '9') {
n *= 10;
n += c - '0';
} else {
isDone = true;
emitValue<output_END>(ctx, 1);
}
uint8_t b3 = (n >> 24);
uint8_t b2 = (n >> 16);
uint8_t b1 = (n >> 8);
uint8_t b0 = n;
emitValue<output_B0>(ctx, b0);
emitValue<output_B1>(ctx, b1);
emitValue<output_B2>(ctx, b2);
emitValue<output_B3>(ctx, b3);
}
}