labath created this revision.
labath added reviewers: zturner, jingham, amccarth.
Herald added a subscriber: jdoerfert.

Instead of modifying the swig-generated code, just add the appropriate
methods to the interface files in order to get the swig to do the
generation for us.

This is a straight-forward move from the python script to the interface
files. The single class which has nontrivial handling in the script
(SBModule) has been left for a separate patch.

For the cases where I did not find any tests exercising the
iteration/length methods (i.e., no tests failed after I stopped emitting
them), I tried to add basic tests for that functionality.


https://reviews.llvm.org/D60119

Files:
  packages/Python/lldbsuite/test/python_api/debugger/TestDebuggerAPI.py
  
packages/Python/lldbsuite/test/python_api/default-constructor/sb_compileunit.py
  packages/Python/lldbsuite/test/python_api/default-constructor/sb_process.py
  packages/Python/lldbsuite/test/python_api/default-constructor/sb_section.py
  packages/Python/lldbsuite/test/python_api/default-constructor/sb_thread.py
  packages/Python/lldbsuite/test/python_api/symbol-context/TestSymbolContext.py
  scripts/Python/modify-python-lldb.py
  scripts/interface/SBBreakpoint.i
  scripts/interface/SBCompileUnit.i
  scripts/interface/SBDebugger.i
  scripts/interface/SBInstructionList.i
  scripts/interface/SBProcess.i
  scripts/interface/SBSection.i
  scripts/interface/SBStringList.i
  scripts/interface/SBSymbolContextList.i
  scripts/interface/SBTarget.i
  scripts/interface/SBThread.i
  scripts/interface/SBType.i
  scripts/interface/SBValue.i
  scripts/interface/SBValueList.i

Index: scripts/interface/SBValueList.i
===================================================================
--- scripts/interface/SBValueList.i
+++ scripts/interface/SBValueList.i
@@ -102,6 +102,10 @@
     GetFirstValueByName (const char* name) const;
     
     %pythoncode %{
+        def __iter__(self):
+            '''Iterate over all values in a lldb.SBValueList object.'''
+            return lldb_iter(self, 'GetSize', 'GetValueAtIndex')
+
         def __len__(self):
             return int(self.GetSize())
 
Index: scripts/interface/SBValue.i
===================================================================
--- scripts/interface/SBValue.i
+++ scripts/interface/SBValue.i
@@ -495,6 +495,14 @@
             for idx in range(len(accessor)):
                 children.append(accessor[idx])
             return children
+
+        def __iter__(self):
+            '''Iterate over all child values of a lldb.SBValue object.'''
+            return lldb_iter(self, 'GetNumChildren', 'GetChildAtIndex')
+
+        def __len__(self):
+            '''Return the number of child values of a lldb.SBValue object.'''
+            return self.GetNumChildren()
         
         __swig_getmethods__["children"] = get_value_child_list
         if _newclass: children = property(get_value_child_list, None, doc='''A read only property that returns a list() of lldb.SBValue objects for the children of the value.''')
Index: scripts/interface/SBType.i
===================================================================
--- scripts/interface/SBType.i
+++ scripts/interface/SBType.i
@@ -509,6 +509,16 @@
     GetSize();
 
     ~SBTypeList();
+
+    %pythoncode%{
+    def __iter__(self):
+        '''Iterate over all types in a lldb.SBTypeList object.'''
+        return lldb_iter(self, 'GetSize', 'GetTypeAtIndex')
+
+    def __len__(self):
+        '''Return the number of types in a lldb.SBTypeList object.'''
+        return self.GetSize()
+    %}
 };
 
 } // namespace lldb
Index: scripts/interface/SBThread.i
===================================================================
--- scripts/interface/SBThread.i
+++ scripts/interface/SBThread.i
@@ -428,6 +428,14 @@
     SafeToCallFunctions ();
 
     %pythoncode %{
+        def __iter__(self):
+            '''Iterate over all frames in a lldb.SBThread object.'''
+            return lldb_iter(self, 'GetNumFrames', 'GetFrameAtIndex')
+
+        def __len__(self):
+            '''Return the number of frames in a lldb.SBThread object.'''
+            return self.GetNumFrames()
+
         class frames_access(object):
             '''A helper object that will lazily hand out frames for a thread when supplied an index.'''
             def __init__(self, sbthread):
Index: scripts/interface/SBTarget.i
===================================================================
--- scripts/interface/SBTarget.i
+++ scripts/interface/SBTarget.i
@@ -1103,6 +1103,21 @@
                 modules.append(self.GetModuleAtIndex(idx))
             return modules
 
+        def module_iter(self):
+            '''Returns an iterator over all modules in a lldb.SBTarget
+            object.'''
+            return lldb_iter(self, 'GetNumModules', 'GetModuleAtIndex')
+
+        def breakpoint_iter(self):
+            '''Returns an iterator over all breakpoints in a lldb.SBTarget
+            object.'''
+            return lldb_iter(self, 'GetNumBreakpoints', 'GetBreakpointAtIndex')
+
+        def watchpoint_iter(self):
+            '''Returns an iterator over all watchpoints in a lldb.SBTarget
+            object.'''
+            return lldb_iter(self, 'GetNumWatchpoints', 'GetWatchpointAtIndex')
+
         __swig_getmethods__["modules"] = get_modules_array
         if _newclass: modules = property(get_modules_array, None, doc='''A read only property that returns a list() of lldb.SBModule objects contained in this target. This list is a list all modules that the target currently is tracking (the main executable and all dependent shared libraries).''')
 
Index: scripts/interface/SBSymbolContextList.i
===================================================================
--- scripts/interface/SBSymbolContextList.i
+++ scripts/interface/SBSymbolContextList.i
@@ -62,6 +62,11 @@
     Clear();
     
     %pythoncode %{
+        def __iter__(self):
+            '''Iterate over all symbol contexts in a lldb.SBSymbolContextList
+            object.'''
+            return lldb_iter(self, 'GetSize', 'GetContextAtIndex')
+
         def __len__(self):
             return int(self.GetSize())
 
Index: scripts/interface/SBStringList.i
===================================================================
--- scripts/interface/SBStringList.i
+++ scripts/interface/SBStringList.i
@@ -40,6 +40,16 @@
 
     void
     Clear ();
+
+    %pythoncode%{
+    def __iter__(self):
+        '''Iterate over all strings in a lldb.SBStringList object.'''
+        return lldb_iter(self, 'GetSize', 'GetStringAtIndex')
+
+    def __len__(self):
+        '''Return the number of strings in a lldb.SBStringList object.'''
+        return self.GetSize()
+    %}
 };
 
 } // namespace lldb
Index: scripts/interface/SBSection.i
===================================================================
--- scripts/interface/SBSection.i
+++ scripts/interface/SBSection.i
@@ -118,6 +118,14 @@
     operator != (const lldb::SBSection &rhs);
      
     %pythoncode %{
+        def __iter__(self):
+            '''Iterate over all subsections in a lldb.SBSection object.'''
+            return lldb_iter(self, 'GetNumSubSections', 'GetSubSectionAtIndex')
+
+        def __len__(self):
+            '''Return the number of subsections in a lldb.SBSection object.'''
+            return self.GetNumSubSections()
+
         def get_addr(self):
             return SBAddress(self, 0)
 
Index: scripts/interface/SBProcess.i
===================================================================
--- scripts/interface/SBProcess.i
+++ scripts/interface/SBProcess.i
@@ -497,6 +497,15 @@
             for idx in range(len(accessor)):
                 threads.append(accessor[idx])
             return threads
+
+        def __iter__(self):
+            '''Iterate over all threads in a lldb.SBProcess object.'''
+            return lldb_iter(self, 'GetNumThreads', 'GetThreadAtIndex')
+ 
+        def __len__(self):
+            '''Return the number of threads in a lldb.SBProcess object.'''
+            return self.GetNumThreads()
+
         
         __swig_getmethods__["threads"] = get_process_thread_list
         if _newclass: threads = property(get_process_thread_list, None, doc='''A read only property that returns a list() of lldb.SBThread objects for this process.''')
Index: scripts/interface/SBInstructionList.i
===================================================================
--- scripts/interface/SBInstructionList.i
+++ scripts/interface/SBInstructionList.i
@@ -64,6 +64,11 @@
     DumpEmulationForAllInstructions (const char *triple);
 
     %pythoncode %{
+        def __iter__(self):
+            '''Iterate over all instructions in a lldb.SBInstructionList
+            object.'''
+            return lldb_iter(self, 'GetSize', 'GetInstructionAtIndex')
+
         def __len__(self):
             '''Access len of the instruction list.'''
             return int(self.GetSize())
Index: scripts/interface/SBDebugger.i
===================================================================
--- scripts/interface/SBDebugger.i
+++ scripts/interface/SBDebugger.i
@@ -435,6 +435,17 @@
 
     lldb::SBError
     RunREPL (lldb::LanguageType language, const char *repl_options);
+
+    %pythoncode%{
+    def __iter__(self):
+        '''Iterate over all targets in a lldb.SBDebugger object.'''
+        return lldb_iter(self, 'GetNumTargets', 'GetTargetAtIndex')
+
+    def __len__(self):
+        '''Return the number of targets in a lldb.SBDebugger object.'''
+        return self.GetNumTargets()
+    %}
+
 }; // class SBDebugger
 
 } // namespace lldb
Index: scripts/interface/SBCompileUnit.i
===================================================================
--- scripts/interface/SBCompileUnit.i
+++ scripts/interface/SBCompileUnit.i
@@ -120,6 +120,15 @@
     operator != (const lldb::SBCompileUnit &rhs) const;
     
     %pythoncode %{
+        def __iter__(self):
+            '''Iterate over all line entries in a lldb.SBCompileUnit object.'''
+            return lldb_iter(self, 'GetNumLineEntries', 'GetLineEntryAtIndex')
+
+        def __len__(self):
+            '''Return the number of line entries in a lldb.SBCompileUnit
+            object.'''
+            return self.GetNumLineEntries()
+
         __swig_getmethods__["file"] = GetFileSpec
         if _newclass: file = property(GetFileSpec, None, doc='''A read only property that returns the same result an lldb object that represents the source file (lldb.SBFileSpec) for the compile unit.''')
         
Index: scripts/interface/SBBreakpoint.i
===================================================================
--- scripts/interface/SBBreakpoint.i
+++ scripts/interface/SBBreakpoint.i
@@ -287,7 +287,17 @@
             for idx in range(len(accessor)):
                 locations.append(accessor[idx])
             return locations
-        
+
+        def __iter__(self):
+            '''Iterate over all breakpoint locations in a lldb.SBBreakpoint
+            object.'''
+            return lldb_iter(self, 'GetNumLocations', 'GetLocationAtIndex')
+
+        def __len__(self):
+            '''Return the number of breakpoint locations in a lldb.SBBreakpoint
+            object.'''
+            return self.GetNumLocations()
+
         __swig_getmethods__["locations"] = get_breakpoint_location_list
         if _newclass: locations = property(get_breakpoint_location_list, None, doc='''A read only property that returns a list() of lldb.SBBreakpointLocation objects for this breakpoint.''')
         
Index: scripts/Python/modify-python-lldb.py
===================================================================
--- scripts/Python/modify-python-lldb.py
+++ scripts/Python/modify-python-lldb.py
@@ -77,9 +77,6 @@
 
 # This supports the iteration protocol.
 iter_def = "    def __iter__(self): return lldb_iter(self, '%s', '%s')"
-module_iter = "    def module_iter(self): return lldb_iter(self, '%s', '%s')"
-breakpoint_iter = "    def breakpoint_iter(self): return lldb_iter(self, '%s', '%s')"
-watchpoint_iter = "    def watchpoint_iter(self): return lldb_iter(self, '%s', '%s')"
 section_iter = "    def section_iter(self): return lldb_iter(self, '%s', '%s')"
 compile_unit_iter = "    def compile_unit_iter(self): return lldb_iter(self, '%s', '%s')"
 
@@ -100,28 +97,7 @@
 #
 # This dictionary defines a mapping from classname to (getsize, getelem) tuple.
 #
-d = {'SBBreakpoint': ('GetNumLocations', 'GetLocationAtIndex'),
-     'SBCompileUnit': ('GetNumLineEntries', 'GetLineEntryAtIndex'),
-     'SBDebugger': ('GetNumTargets', 'GetTargetAtIndex'),
-     'SBModule': ('GetNumSymbols', 'GetSymbolAtIndex'),
-     'SBProcess': ('GetNumThreads', 'GetThreadAtIndex'),
-     'SBSection': ('GetNumSubSections', 'GetSubSectionAtIndex'),
-     'SBThread': ('GetNumFrames', 'GetFrameAtIndex'),
-
-     'SBInstructionList': ('GetSize', 'GetInstructionAtIndex'),
-     'SBStringList': ('GetSize', 'GetStringAtIndex',),
-     'SBSymbolContextList': ('GetSize', 'GetContextAtIndex'),
-     'SBTypeList': ('GetSize', 'GetTypeAtIndex'),
-     'SBValueList': ('GetSize', 'GetValueAtIndex'),
-
-     'SBType': ('GetNumberChildren', 'GetChildAtIndex'),
-     'SBValue': ('GetNumChildren', 'GetChildAtIndex'),
-
-     # SBTarget needs special processing, see below.
-     'SBTarget': {'module': ('GetNumModules', 'GetModuleAtIndex'),
-                  'breakpoint': ('GetNumBreakpoints', 'GetBreakpointAtIndex'),
-                  'watchpoint': ('GetNumWatchpoints', 'GetWatchpointAtIndex')
-                  },
+d = {'SBModule': ('GetNumSymbols', 'GetSymbolAtIndex'),
 
      # SBModule has an additional section_iter(), see below.
      'SBModule-section': ('GetNumSections', 'GetSectionAtIndex'),
@@ -238,16 +214,9 @@
         if match:
             # We found the beginning of the __init__ method definition.
             # This is a good spot to insert the iter support.
-            #
-            # But note that SBTarget has three types of iterations.
-            if cls == "SBTarget":
-                new_content.add_line(module_iter % (d[cls]['module']))
-                new_content.add_line(breakpoint_iter % (d[cls]['breakpoint']))
-                new_content.add_line(watchpoint_iter % (d[cls]['watchpoint']))
-            else:
-                if (state & DEFINING_ITERATOR):
-                    new_content.add_line(iter_def % d[cls])
-                    new_content.add_line(len_def % d[cls][0])
+
+            new_content.add_line(iter_def % d[cls])
+            new_content.add_line(len_def % d[cls][0])
 
             # SBModule has extra SBSection, SBCompileUnit iterators and
             # symbol_in_section_iter()!
Index: packages/Python/lldbsuite/test/python_api/symbol-context/TestSymbolContext.py
===================================================================
--- packages/Python/lldbsuite/test/python_api/symbol-context/TestSymbolContext.py
+++ packages/Python/lldbsuite/test/python_api/symbol-context/TestSymbolContext.py
@@ -102,3 +102,9 @@
         self.assertTrue(
             function.GetName() == symbol.GetName() and symbol.GetName() == 'c',
             "The symbol name should be 'c'")
+
+        sc_list = lldb.SBSymbolContextList()
+        sc_list.Append(context)
+        self.assertEqual(len(sc_list), 1)
+        for sc in sc_list:
+            self.assertEqual(lineEntry, sc.GetLineEntry())
Index: packages/Python/lldbsuite/test/python_api/default-constructor/sb_thread.py
===================================================================
--- packages/Python/lldbsuite/test/python_api/default-constructor/sb_thread.py
+++ packages/Python/lldbsuite/test/python_api/default-constructor/sb_thread.py
@@ -36,3 +36,4 @@
     obj.Clear()
     for frame in obj:
         s = str(frame)
+    len(obj)
Index: packages/Python/lldbsuite/test/python_api/default-constructor/sb_section.py
===================================================================
--- packages/Python/lldbsuite/test/python_api/default-constructor/sb_section.py
+++ packages/Python/lldbsuite/test/python_api/default-constructor/sb_section.py
@@ -21,3 +21,4 @@
     obj.GetDescription(lldb.SBStream())
     for subsec in obj:
         s = str(subsec)
+    len(obj)
Index: packages/Python/lldbsuite/test/python_api/default-constructor/sb_process.py
===================================================================
--- packages/Python/lldbsuite/test/python_api/default-constructor/sb_process.py
+++ packages/Python/lldbsuite/test/python_api/default-constructor/sb_process.py
@@ -48,3 +48,4 @@
     obj.GetNumSupportedHardwareWatchpoints(error)
     for thread in obj:
         s = str(thread)
+    len(obj)
Index: packages/Python/lldbsuite/test/python_api/default-constructor/sb_compileunit.py
===================================================================
--- packages/Python/lldbsuite/test/python_api/default-constructor/sb_compileunit.py
+++ packages/Python/lldbsuite/test/python_api/default-constructor/sb_compileunit.py
@@ -12,5 +12,6 @@
     obj.GetLineEntryAtIndex(0xffffffff)
     obj.FindLineEntryIndex(0, 0xffffffff, None)
     obj.GetDescription(lldb.SBStream())
+    len(obj)
     for line_entry in obj:
         s = str(line_entry)
Index: packages/Python/lldbsuite/test/python_api/debugger/TestDebuggerAPI.py
===================================================================
--- packages/Python/lldbsuite/test/python_api/debugger/TestDebuggerAPI.py
+++ packages/Python/lldbsuite/test/python_api/debugger/TestDebuggerAPI.py
@@ -34,6 +34,9 @@
         self.dbg.SetPrompt(None)
         self.dbg.SetCurrentPlatform(None)
         self.dbg.SetCurrentPlatformSDKRoot(None)
+        
+        fresh_dbg = lldb.SBDebugger()
+        self.assertEquals(len(fresh_dbg), 0)
 
     @add_test_categories(['pyapi'])
     def test_debugger_delete_invalid_target(self):
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