Use Clang's FixItHints to correct expressions with "trivial" mistakes (e.g. "." for "->".)

This feature is controlled by an expression command option, a target property and the
SBExpressionOptions setting.  FixIt's are only applied to UserExpressions, not UtilityFunctions,
those you have to get right when you make them.

This is just a first stage.  At present the fixits are applied silently.  The next step
is to tell the user about the applied fixit.

<rdar://problem/25351938>

llvm-svn: 264379

1 files changed, 25 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/expression_command/fixits/main.cpp b/lldb/packages/Python/lldbsuite/test/expression_command/fixits/main.cpp
new file mode 100644
index 00000000000..371d8333763
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/expression_command/fixits/main.cpp
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+struct SubStruct
+{
+  int a;
+  int b;
+};
+
+struct MyStruct
+{
+  int first;
+  struct SubStruct second;
+};
+
+int
+main()
+{
+  struct MyStruct my_struct = {10, {20, 30}};
+  struct MyStruct *my_pointer = &my_struct;
+  printf ("Stop here to evaluate expressions: %d %d %p\n", my_pointer->first, my_pointer->second.a, my_pointer);
+  return 0;
+}
+
+
+