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Change lexical scope workers

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This commit is contained in:
Mark Haslinghuis 2020-12-08 16:31:58 +01:00
parent 317f937fd5
commit aa18663d2b
1 changed files with 19 additions and 21 deletions
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40
src/js/workers/hex_parser.js
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@ -11,29 +11,29 @@ function read_hex_file(data) {
data.pop(); data.pop();
} }
var hexfile_valid = true; // if any of the crc checks failed, this variable flips to false let hexfile_valid = true; // if any of the crc checks failed, this variable flips to false
var result = { const result = {
data: [], data: [],
end_of_file: false, end_of_file: false,
bytes_total: 0, bytes_total: 0,
start_linear_address: 0 start_linear_address: 0,
}; };
var extended_linear_address = 0; let extended_linear_address = 0;
var next_address = 0; let next_address = 0;
for (var i = 0; i < data.length && hexfile_valid; i++) { for (let i = 0; i < data.length && hexfile_valid; i++) {
// each byte is represnted by two chars // each byte is represnted by two chars
var byte_count = parseInt(data[i].substr(1, 2), 16); const byte_count = parseInt(data[i].substr(1, 2), 16);
var address = parseInt(data[i].substr(3, 4), 16); const address = parseInt(data[i].substr(3, 4), 16);
var record_type = parseInt(data[i].substr(7, 2), 16); const record_type = parseInt(data[i].substr(7, 2), 16);
var content = data[i].substr(9, byte_count * 2); // still in string format const content = data[i].substr(9, byte_count * 2); // still in string format
var checksum = parseInt(data[i].substr(9 + byte_count * 2, 2), 16); // (this is a 2's complement value) const checksum = parseInt(data[i].substr(9 + byte_count * 2, 2), 16); // (this is a 2's complement value)
switch (record_type) { switch (record_type) {
case 0x00: // data record case 0x00: // data record
if (address != next_address || next_address == 0) { if (address !== next_address || next_address === 0) {
result.data.push({'address': extended_linear_address + address, 'bytes': 0, 'data': []}); result.data.push({'address': extended_linear_address + address, 'bytes': 0, 'data': []});
} }
@ -41,10 +41,10 @@ function read_hex_file(data) {
next_address = address + byte_count; next_address = address + byte_count;
// process data // process data
var crc = byte_count + parseInt(data[i].substr(3, 2), 16) + parseInt(data[i].substr(5, 2), 16) + record_type; let crc = byte_count + parseInt(data[i].substr(3, 2), 16) + parseInt(data[i].substr(5, 2), 16) + record_type;
for (var needle = 0; needle < byte_count * 2; needle += 2) { // * 2 because of 2 hex chars per 1 byte for (let needle = 0; needle < byte_count * 2; needle += 2) { // * 2 because of 2 hex chars per 1 byte
var num = parseInt(content.substr(needle, 2), 16); // get one byte in hex and convert it to decimal const num = parseInt(content.substr(needle, 2), 16); // get one byte in hex and convert it to decimal
var data_block = result.data.length - 1; const data_block = result.data.length - 1;
result.data[data_block].data.push(num); result.data[data_block].data.push(num);
result.data[data_block].bytes++; result.data[data_block].bytes++;
@ -94,17 +94,15 @@ function read_hex_file(data) {
} }
function microtime() { function microtime() {
var now = new Date().getTime() / 1000; return new Date().getTime() / 1000;
return now;
} }
onmessage = function(event) { onmessage = function(event) {
var time_parsing_start = microtime(); // track time const timeParsingStart = microtime(); // track time
read_hex_file(event.data); read_hex_file(event.data);
console.log('HEX_PARSER - File parsed in: ' + (microtime() - time_parsing_start).toFixed(4) + ' seconds'); console.log(`HEX_PARSER - File parsed in: ${(microtime() - timeParsingStart).toFixed(4)} seconds`);
// terminate worker // terminate worker
close(); close();