Improve organization of edge case code in collector (#869)

lib/collector.js

@@ -49,18 +49,6 @@ class DataCollector {
     } catch (err) { /*Ignore*/ };
   }
 
-  // Temporarily disabled because some relevant traces aren't available
-  /**
-   * Converts pushData value to string and registers in instrumentation map.
-   * @param  {HardhatEVMTraceInstruction} instruction
-   */
-  /*trackHardhatEVMInstruction(instruction){
-    if (instruction && instruction.pushData){
-      let hash = `0x` + instruction.pushData.toString('hex');
-      this._registerHash(hash)
-    }
-  }*/
-
   /**
    * Normalizes has string and marks hit.
    * @param  {String} hash bytes32 hash
@@ -78,20 +66,6 @@ class DataCollector {
       }
       return;
     }
-
-    // Detect and recover from viaIR mangled hashes by left-padding single `0`
-    if(this.viaIR && hash.length === 18) {
-      hash = hash.slice(2);
-      hash = '0' + hash;
-      hash = hash.slice(0,16);
-      hash = '0x' + hash;
-      if(this.instrumentationData[hash]){
-        if (this.lastHash !== hash) {
-          this.lastHash = hash;
-          this.instrumentationData[hash].hits++
-        }
-      }
-    }
   }
 
   /**
@@ -107,6 +81,15 @@ class DataCollector {
     // but it doesn't preserve leading zeroes when it does this
     if (this.viaIR && hash.length >= 18) {
       hash = hash.slice(0,18);
+
+      // Detect and recover from viaIR mangled hashes by left-padding single `0`
+      if(!this.instrumentationData[hash]) {
+        hash = hash.slice(2);
+        hash = '0' + hash;
+        hash = hash.slice(0,16);
+        hash = '0x' + hash;
+      }
+
     } else if (hash.length < 18 && hash.length > 11){
       hash = hash.slice(2);
       while(hash.length < 16) hash = '0' + hash;