162 lines
6.9 KiB
Python
162 lines
6.9 KiB
Python
"""
|
|
Test calling an expression with errors that a FixIt can fix.
|
|
"""
|
|
|
|
import lldb
|
|
from lldbsuite.test.decorators import *
|
|
from lldbsuite.test.lldbtest import *
|
|
from lldbsuite.test import lldbutil
|
|
|
|
|
|
class ExprCommandWithFixits(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
def test_with_dummy_target(self):
|
|
"""Test calling expressions in the dummy target with errors that can be fixed by the FixIts."""
|
|
|
|
# Enable fix-its as they were intentionally disabled by TestBase.setUp.
|
|
self.runCmd("settings set target.auto-apply-fixits true")
|
|
|
|
ret_val = lldb.SBCommandReturnObject()
|
|
result = self.dbg.GetCommandInterpreter().HandleCommand("expression ((1 << 16) - 1))", ret_val)
|
|
self.assertEqual(result, lldb.eReturnStatusSuccessFinishResult, ret_val.GetError())
|
|
self.assertIn("Fix-it applied", ret_val.GetError())
|
|
|
|
def test_with_target(self):
|
|
"""Test calling expressions with errors that can be fixed by the FixIts."""
|
|
self.build()
|
|
(target, process, self.thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
|
|
'Stop here to evaluate expressions',
|
|
lldb.SBFileSpec("main.cpp"))
|
|
|
|
options = lldb.SBExpressionOptions()
|
|
options.SetAutoApplyFixIts(True)
|
|
|
|
top_level_options = lldb.SBExpressionOptions()
|
|
top_level_options.SetAutoApplyFixIts(True)
|
|
top_level_options.SetTopLevel(True)
|
|
|
|
frame = self.thread.GetFrameAtIndex(0)
|
|
|
|
# Try with one error:
|
|
value = frame.EvaluateExpression("my_pointer.first", options)
|
|
self.assertTrue(value.IsValid())
|
|
self.assertSuccess(value.GetError())
|
|
self.assertEquals(value.GetValueAsUnsigned(), 10)
|
|
|
|
# Try with one error in a top-level expression.
|
|
# The Fix-It changes "ptr.m" to "ptr->m".
|
|
expr = "struct X { int m; }; X x; X *ptr = &x; int m = ptr.m;"
|
|
value = frame.EvaluateExpression(expr, top_level_options)
|
|
# A successfully parsed top-level expression will yield an error
|
|
# that there is 'no value'. If a parsing error would have happened we
|
|
# would get a different error kind, so let's check the error kind here.
|
|
self.assertEquals(value.GetError().GetCString(), "error: No value")
|
|
|
|
# Try with two errors:
|
|
two_error_expression = "my_pointer.second->a"
|
|
value = frame.EvaluateExpression(two_error_expression, options)
|
|
self.assertTrue(value.IsValid())
|
|
self.assertSuccess(value.GetError())
|
|
self.assertEquals(value.GetValueAsUnsigned(), 20)
|
|
|
|
# Try a Fix-It that is stored in the 'note:' diagnostic of an error.
|
|
# The Fix-It here is adding parantheses around the ToStr parameters.
|
|
fixit_in_note_expr ="#define ToStr(x) #x\nToStr(0 {, })"
|
|
value = frame.EvaluateExpression(fixit_in_note_expr, options)
|
|
self.assertTrue(value.IsValid())
|
|
self.assertSuccess(value.GetError())
|
|
self.assertEquals(value.GetSummary(), '"(0 {, })"')
|
|
|
|
# Now turn off the fixits, and the expression should fail:
|
|
options.SetAutoApplyFixIts(False)
|
|
value = frame.EvaluateExpression(two_error_expression, options)
|
|
self.assertTrue(value.IsValid())
|
|
self.assertTrue(value.GetError().Fail())
|
|
error_string = value.GetError().GetCString()
|
|
self.assertTrue(
|
|
error_string.find("fixed expression suggested:") != -1,
|
|
"Fix was suggested")
|
|
self.assertTrue(
|
|
error_string.find("my_pointer->second.a") != -1,
|
|
"Fix was right")
|
|
|
|
# The final function call runs into SIGILL on aarch64-linux.
|
|
@expectedFailureAll(archs=["aarch64"], oslist=["linux"])
|
|
def test_with_multiple_retries(self):
|
|
"""Test calling expressions with errors that can be fixed by the FixIts."""
|
|
self.build()
|
|
(target, process, self.thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
|
|
'Stop here to evaluate expressions',
|
|
lldb.SBFileSpec("main.cpp"))
|
|
|
|
# Test repeatedly applying Fix-Its to expressions and reparsing them.
|
|
multiple_runs_options = lldb.SBExpressionOptions()
|
|
multiple_runs_options.SetAutoApplyFixIts(True)
|
|
multiple_runs_options.SetTopLevel(True)
|
|
|
|
frame = self.thread.GetFrameAtIndex(0)
|
|
|
|
# An expression that needs two parse attempts with one Fix-It each
|
|
# to be successfully parsed.
|
|
two_runs_expr = """
|
|
struct Data { int m; };
|
|
|
|
template<typename T>
|
|
struct S1 : public T {
|
|
using T::TypeDef;
|
|
int f() {
|
|
Data data;
|
|
data.m = 123;
|
|
// The first error as the using above requires a 'typename '.
|
|
// Will trigger a Fix-It that puts 'typename' in the right place.
|
|
typename S1<T>::TypeDef i = &data;
|
|
// i has the type "Data *", so this should be i.m.
|
|
// The second run will change the . to -> via the Fix-It.
|
|
return i.m;
|
|
}
|
|
};
|
|
|
|
struct ClassWithTypeDef {
|
|
typedef Data *TypeDef;
|
|
};
|
|
|
|
int test_X(int i) {
|
|
S1<ClassWithTypeDef> s1;
|
|
return s1.f();
|
|
}
|
|
"""
|
|
|
|
# Disable retries which will fail.
|
|
multiple_runs_options.SetRetriesWithFixIts(0)
|
|
value = frame.EvaluateExpression(two_runs_expr, multiple_runs_options)
|
|
self.assertIn("expression failed to parse, fixed expression suggested:",
|
|
value.GetError().GetCString())
|
|
self.assertIn("using typename T::TypeDef",
|
|
value.GetError().GetCString())
|
|
# The second Fix-It shouldn't be suggested here as Clang should have
|
|
# aborted the parsing process.
|
|
self.assertNotIn("i->m",
|
|
value.GetError().GetCString())
|
|
|
|
# Retry once, but the expression needs two retries.
|
|
multiple_runs_options.SetRetriesWithFixIts(1)
|
|
value = frame.EvaluateExpression(two_runs_expr, multiple_runs_options)
|
|
self.assertIn("expression failed to parse, fixed expression suggested:",
|
|
value.GetError().GetCString())
|
|
# Both our fixed expressions should be in the suggested expression.
|
|
self.assertIn("using typename T::TypeDef",
|
|
value.GetError().GetCString())
|
|
self.assertIn("i->m",
|
|
value.GetError().GetCString())
|
|
|
|
# Retry twice, which will get the expression working.
|
|
multiple_runs_options.SetRetriesWithFixIts(2)
|
|
value = frame.EvaluateExpression(two_runs_expr, multiple_runs_options)
|
|
# This error signals success for top level expressions.
|
|
self.assertEquals(value.GetError().GetCString(), "error: No value")
|
|
|
|
# Test that the code above compiles to the right thing.
|
|
self.expect_expr("test_X(1)", result_type="int", result_value="123")
|