dumpers: share the code for extractTemplateArgument

Change-Id: Ic1b03d2dffdfb7ba6ead191601127b54af38b3cd
Reviewed-by: hjk <hjk121@nokiamail.com>

share/qtcreator/debugger/dumper.py

@@ -340,6 +340,34 @@ class DumperBase:
     def stringData(self, value):
         return self.byteArrayDataHelper(self.dereferenceValue(value))
 
+    def extractTemplateArgument(self, typename, position):
+        level = 0
+        skipSpace = False
+        inner = ''
+        for c in typename[typename.find('<') + 1 : -1]:
+            if c == '<':
+                inner += c
+                level += 1
+            elif c == '>':
+                level -= 1
+                inner += c
+            elif c == ',':
+                if level == 0:
+                    if position == 0:
+                        return inner.strip()
+                    position -= 1
+                    inner = ''
+                else:
+                    inner += c
+                    skipSpace = True
+            else:
+                if skipSpace and c == ' ':
+                    pass
+                else:
+                    inner += c
+                    skipSpace = False
+        return inner.strip()
+
     def putStringValue(self, value):
         return self.putValue(self.encodeString(value), Hex4EncodedLittleEndian)