Rewrite parsing of source mapping info

mythril/ether/soliditycontract.py

@@ -49,16 +49,16 @@ class SolidityContract(ETHContract):
 
         for item in srcmap:
 
-            m = re.search(r"^(\d+):(\d+)", item)
+            mapping = item.split(":")
 
-            if (m):
-                offset = int(m.group(1))
-                length = int(m.group(2))  
+            if len(mapping) > 0 and len(mapping[0]) > 0:
+                offset = int(mapping[0])
 
-            m = re.search(r"^\d+:\d+:(\d+)", item)
+            if len(mapping) > 1 and len(mapping[1]) > 0:
+                length = int(mapping[1])
             
-            if (m):
-                idx = int(m.group(1))
+            if len(mapping) > 2 and len(mapping[2]) > 0:
+                idx = int(mapping[2])
 
             self.mappings.append(SourceMapping(idx, offset, length))
 

mythril/support/truffle.py

@@ -57,23 +57,18 @@ def analyze_truffle_project():
                 mappings = []
                 i = 0
 
-                while(i < len(deployedSourceMap)):
+                for item in deployedSourceMap:
 
-                    m = re.search(r"^(\d+):*(\d+)", deployedSourceMap[i])
+                    mapping = item.split(":")
 
-                    if (m):
-                        offset = m.group(1)
-                        length = m.group(2)
-                    else:
-                        m = re.search(r"^:(\d+)", deployedSourceMap[i])
+                    if len(mapping) > 0 and len(mapping[0]) > 0:
+                        offset = int(mapping[0])
 
-                        if m:
-                            length = m.group(1)
+                    if len(mapping) > 1 and len(mapping[1]) > 0:
+                        length = int(mapping[1])
 
                     mappings.append((int(offset), int(length)))
 
-                    i += 1
-
                 for issue in issues:
 
                     index = helper.get_instruction_index(disassembly.instruction_list, issue.pc)