You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
920 B
40 lines
920 B
const web3Utils = require('web3-utils')
|
|
|
|
class DataCollector {
|
|
constructor(instrumentationData={}){
|
|
this.instrumentationData = instrumentationData;
|
|
|
|
this.validOpcodes = {
|
|
"PUSH1": true,
|
|
}
|
|
}
|
|
|
|
step(info){
|
|
try {
|
|
if (this.validOpcodes[info.opcode.name] && info.stack.length > 0){
|
|
const idx = info.stack.length - 1;
|
|
let hash = web3Utils.toHex(info.stack[idx]).toString();
|
|
hash = this._normalizeHash(hash);
|
|
|
|
if(this.instrumentationData[hash]){
|
|
this.instrumentationData[hash].hits++;
|
|
}
|
|
}
|
|
} catch (err) { /*Ignore*/ };
|
|
}
|
|
|
|
_setInstrumentationData(data){
|
|
this.instrumentationData = data;
|
|
}
|
|
|
|
_normalizeHash(hash){
|
|
if (hash.length < 66 && hash.length > 52){
|
|
hash = hash.slice(2);
|
|
while(hash.length < 64) hash = '0' + hash;
|
|
hash = '0x' + hash
|
|
}
|
|
return hash;
|
|
}
|
|
}
|
|
|
|
module.exports = DataCollector;
|
|
|