Debugger: Change/improve LLDB display of enums in some cases

This fixes the Internal2, EnumFlags and EnumInClass tests on Linux.

The values lose now the previously hand-crafted Class:: prefixes,
but the context is clear from the type column, and it's what LLDB
developers (and potentially users) consider normal.

Change-Id: I09e41f7b4fb4f078ef3f535fe650d06e7c2a0331
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: hjk <hjk@qt.io>

share/qtcreator/debugger/lldbbridge.py

@@ -219,16 +219,14 @@ class Dumper(DumperBase):
 
             if code == lldb.eTypeClassEnumeration:
                 intval = nativeValue.GetValueAsSigned()
-                if hasattr(nativeType, 'get_enum_members_array'):
-                    for enumMember in nativeType.get_enum_members_array():
-                        # Even when asking for signed we get unsigned with LLDB 3.8.
-                        diff = enumMember.GetValueAsSigned() - intval
-                        mask = (1 << nativeType.GetByteSize() * 8) - 1
-                        if diff & mask == 0:
-                            path = nativeType.GetName().split('::')
-                            path[-1] = enumMember.GetName()
-                            val.ldisplay = '%s (%d)' % ('::'.join(path), intval)
-                val.ldisplay = '%d' % intval
+                display = str(nativeValue).split(' = ')
+                if len(display) == 2:
+                    verbose = display[1]
+                    if '|' in verbose and not verbose.startswith('('):
+                        verbose = '(' + verbose + ')'
+                else:
+                    verbose = intval
+                val.ldisplay = '%s (%d)' % (verbose, intval)
             elif code in (lldb.eTypeClassComplexInteger, lldb.eTypeClassComplexFloat):
                 val.ldisplay = str(nativeValue.GetValue())
             #elif code == lldb.eTypeClassArray:

tests/auto/debugger/tst_dumpers.cpp

@@ -5905,7 +5905,7 @@ void tst_Dumpers::dumper_data()
                     "Flags fone = one;\n"
                     "Flags fthree = (Flags)(one|two);\n"
                     "Flags fmixed = (Flags)(two|8);\n"
-                    "Flags fbad = (Flags)(24);",
+                    "Flags fbad = (Flags)(8);",
 
                     "&fone, &fthree, &fmixed, &fbad")
 
@@ -5913,8 +5913,10 @@ void tst_Dumpers::dumper_data()
 
                + Check("fone", "one (1)", "Flags")
                + Check("fthree", "(one | two) (3)", "Flags")
-               + Check("fmixed", "(two | unknown: 8) (10)", "Flags")
-               + Check("fbad", "(unknown: 24) (24)", "Flags");
+               // There are optional 'unknown:' prefixes and possibly hex
+               // displays for the unknown flags.
+               + Check("fmixed", ValuePattern("(two \\| .*8) (10)"), "Flags")
+               + Check("fbad", ValuePattern(".*8.* (.*8)"), "Flags");
 
 
     QTest::newRow("EnumInClass")
@@ -5933,9 +5935,10 @@ void tst_Dumpers::dumper_data()
 
                 + NoCdbEngine
 
-                + Check("e.e1", "(E::b1 | E::c1) (3)", "E::Enum1")
-                + Check("e.e2", "(E::b2 | E::c2) (3)", "E::Enum2")
-                + Check("e.e3", "(E::b3 | E::c3) (3)", "E::Enum3");
+                // GDB prefixes with E::, LLDB not.
+                + Check("e.e1", ValuePattern("(.*b1 \\| .*c1) (3)"), "E::Enum1")
+                + Check("e.e2", ValuePattern("(.*b2 \\| .*c2) (3)"), "E::Enum2")
+                + Check("e.e3", ValuePattern("(.*b3 \\| .*c3) (3)"), "E::Enum3");
 
 
     QTest::newRow("QSizePolicy")