mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-21 12:35:47 -04:00
40624a085c
Summary:
This patch adds support of expression evaluation in a context of some object.
Consider the following example:
```
struct S {
int a = 11;
int b = 12;
};
int main() {
S s;
int a = 1;
int b = 2;
// We have stopped here
return 0;
}
```
This patch allows to do something like that:
```
lldb.frame.FindVariable("s").EvaluateExpression("a + b")
```
and the result will be `33` (not `3`) because fields `a` and `b` of `s` will be
used (not locals `a` and `b`).
This is achieved by replacing of `this` type and object for the expression. This
has some limitations: an expression can be evaluated only for values located in
the debuggee process memory (they must have an address of `eAddressTypeLoad`
type).
Reviewers: teemperor, clayborg, jingham, zturner, labath, davide, spyffe, serge-sans-paille
Reviewed By: jingham
Subscribers: abidh, lldb-commits, leonid.mashinskiy
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D55318
llvm-svn: 353149
79 lines
2.7 KiB
Python
79 lines
2.7 KiB
Python
"""
|
|
Tests expression evaluation in context of an objc class.
|
|
"""
|
|
|
|
import lldb
|
|
import lldbsuite.test.lldbutil as lldbutil
|
|
from lldbsuite.test.decorators import *
|
|
from lldbsuite.test.lldbtest import *
|
|
|
|
class ContextObjectObjcTestCase(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
@skipUnlessDarwin
|
|
def test_context_object_objc(self):
|
|
"""Tests expression evaluation in context of an objc class."""
|
|
self.build()
|
|
|
|
(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self, '// Break here', self.main_source_spec)
|
|
frame = thread.GetFrameAtIndex(0)
|
|
|
|
#
|
|
# Test objc class variable
|
|
#
|
|
|
|
obj_val = frame.FindVariable("objcClass")
|
|
self.assertTrue(obj_val.IsValid())
|
|
obj_val = obj_val.Dereference()
|
|
self.assertTrue(obj_val.IsValid())
|
|
|
|
# Test an empty expression evaluation
|
|
value = obj_val.EvaluateExpression("")
|
|
self.assertFalse(value.IsValid())
|
|
self.assertFalse(value.GetError().Success())
|
|
|
|
# Test retrieving of a field (not a local with the same name)
|
|
value = obj_val.EvaluateExpression("field")
|
|
self.assertTrue(value.IsValid())
|
|
self.assertTrue(value.GetError().Success())
|
|
self.assertEqual(value.GetValueAsSigned(), 1111)
|
|
|
|
# Test if the self pointer is properly evaluated
|
|
|
|
# Test retrieving of an objcClass's property through the self pointer
|
|
value = obj_val.EvaluateExpression("self.property")
|
|
self.assertTrue(value.IsValid())
|
|
self.assertTrue(value.GetError().Success())
|
|
self.assertEqual(value.GetValueAsSigned(), 2222)
|
|
|
|
# Test objcClass's methods evaluation through the self pointer
|
|
value = obj_val.EvaluateExpression("[self method]")
|
|
self.assertTrue(value.IsValid())
|
|
self.assertTrue(value.GetError().Success())
|
|
self.assertEqual(value.GetValueAsSigned(), 3333)
|
|
|
|
# Test if we can use a computation result reference object correctly
|
|
|
|
obj_val = frame.EvaluateExpression("[ObjcClass createNew]")
|
|
self.assertTrue(obj_val.IsValid())
|
|
obj_val = obj_val.Dereference()
|
|
self.assertTrue(obj_val.IsValid())
|
|
|
|
# Test an expression evaluation on it
|
|
value = obj_val.EvaluateExpression("1")
|
|
self.assertTrue(value.IsValid())
|
|
self.assertTrue(value.GetError().Success())
|
|
|
|
# Test retrieving of a field on it
|
|
value = obj_val.EvaluateExpression("field")
|
|
self.assertTrue(value.IsValid())
|
|
self.assertTrue(value.GetError().Success())
|
|
self.assertEqual(value.GetValueAsSigned(), 1111)
|
|
|
|
def setUp(self):
|
|
TestBase.setUp(self)
|
|
|
|
self.main_source = "main.m"
|
|
self.main_source_spec = lldb.SBFileSpec(self.main_source)
|