v1nh1shungry updated this revision to Diff 487044.
v1nh1shungry added a comment.
add more tests
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D141107/new/
https://reviews.llvm.org/D141107
Files:
clang-tools-extra/clang-tidy/bugprone/StandaloneEmptyCheck.cpp
clang-tools-extra/test/clang-tidy/checkers/bugprone/standalone-empty.cpp
Index: clang-tools-extra/test/clang-tidy/checkers/bugprone/standalone-empty.cpp
===================================================================
--- clang-tools-extra/test/clang-tidy/checkers/bugprone/standalone-empty.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/bugprone/standalone-empty.cpp
@@ -155,7 +155,7 @@
} // namespace qualifiers
-void test_member_empty() {
+bool test_member_empty() {
{
std::vector<int> v;
v.empty();
@@ -231,9 +231,69 @@
s.empty();
// CHECK-MESSAGES: :[[#@LINE-1]]:5: warning: ignoring the result of 'empty()' [bugprone-standalone-empty]
}
+
+ {
+ std::vector<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ std::vector_with_int_empty<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear_args<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear_variable<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ absl::string s;
+ return s.empty();
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear s;
+ return s.empty();
+ // no-warning
+ }
+
+ {
+ absl::string_with_int_empty s;
+ return s.empty();
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear_args s;
+ return s.empty();
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear_variable s;
+ return s.empty();
+ // no-warning
+ }
}
-void test_qualified_empty() {
+bool test_qualified_empty() {
{
absl::string_with_clear v;
std::empty(v);
@@ -260,9 +320,30 @@
absl::empty(nullptr);
// no-warning
}
+
+ {
+ absl::string_with_clear s;
+ return std::empty(s);
+ // no-warning
+ return absl::empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string s;
+ return std::empty(s);
+ // no-warning
+ }
+
+ {
+ return std::empty(0);
+ // no-warning
+ return absl::empty(nullptr);
+ // no-warning
+ }
}
-void test_unqualified_empty() {
+bool test_unqualified_empty() {
{
std::vector<int> v;
empty(v);
@@ -370,6 +451,106 @@
// CHECK-MESSAGES: :[[#@LINE-1]]:5: warning: ignoring the result of 'absl::empty'; did you mean 'clear()'? [bugprone-standalone-empty]
// CHECK-FIXES: {{^ }} s.clear();{{$}}
}
+
+ {
+ std::vector<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ std::vector_with_void_empty<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ std::vector_with_int_empty<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear_args<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear_variable<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ absl::string s;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string_with_void_empty s;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear s;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string_with_int_empty s;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear_args s;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear_variable s;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ std::vector<int> v;
+ using std::empty;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ std::vector_with_clear<int> v;
+ using std::empty;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ absl::string s;
+ using absl::empty;
+ return empty(s);
+ // no-warning
+ }
+
+ {
+ absl::string_with_clear s;
+ using absl::empty;
+ return empty(s);
+ // no-warning
+ }
}
void test_empty_method_expressions() {
@@ -444,8 +625,7 @@
// CHECK-MESSAGES: :[[#@LINE-1]]:27: warning: ignoring the result of 'std::empty' [bugprone-standalone-empty]
}
-void test_clear_in_base_class() {
-
+bool test_clear_in_base_class() {
{
base::vector<int> v;
v.empty();
@@ -497,9 +677,57 @@
empty(v);
// CHECK-MESSAGES: :[[#@LINE-1]]:5: warning: ignoring the result of 'base::empty' [bugprone-standalone-empty]
}
+
+ {
+ base::vector<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ base::vector_non_dependent<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ base::vector_clear_with_args<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ base::vector_clear_variable<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ base::vector<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ base::vector_non_dependent<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ base::vector_clear_with_args<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ base::vector_clear_variable<int> v;
+ return empty(v);
+ // no-warning
+ }
}
-void test_clear_with_qualifiers() {
+bool test_clear_with_qualifiers() {
{
qualifiers::vector_with_const_clear<int> v;
v.empty();
@@ -575,4 +803,76 @@
empty(v);
// CHECK-MESSAGES: :[[#@LINE-1]]:5: warning: ignoring the result of 'std::empty' [bugprone-standalone-empty]
}
+
+ {
+ qualifiers::vector_with_const_clear<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ const qualifiers::vector_with_const_clear<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ const qualifiers::vector_with_const_empty<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ qualifiers::vector_with_const_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ const qualifiers::vector_with_const_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ const std::vector_with_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ qualifiers::vector_with_volatile_clear<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ volatile qualifiers::vector_with_volatile_clear<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ volatile qualifiers::vector_with_volatile_empty<int> v;
+ return v.empty();
+ // no-warning
+ }
+
+ {
+ qualifiers::vector_with_volatile_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ volatile qualifiers::vector_with_volatile_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
+
+ {
+ volatile std::vector_with_clear<int> v;
+ return empty(v);
+ // no-warning
+ }
}
Index: clang-tools-extra/clang-tidy/bugprone/StandaloneEmptyCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/bugprone/StandaloneEmptyCheck.cpp
+++ clang-tools-extra/clang-tidy/bugprone/StandaloneEmptyCheck.cpp
@@ -98,6 +98,7 @@
const auto PParentStmtExpr = Result.Nodes.getNodeAs<Expr>("stexpr");
const auto ParentCompStmt = Result.Nodes.getNodeAs<CompoundStmt>("parent");
const auto *ParentCond = getCondition(Result.Nodes, "parent");
+ const auto *ParentReturnStmt = Result.Nodes.getNodeAs<ReturnStmt>("parent");
if (const auto *MemberCall =
Result.Nodes.getNodeAs<CXXMemberCallExpr>("empty")) {
@@ -109,6 +110,9 @@
if (PParentStmtExpr && ParentCompStmt &&
ParentCompStmt->body_back() == MemberCall->getExprStmt())
return;
+ // Skip if it's a return statement
+ if (ParentReturnStmt)
+ return;
SourceLocation MemberLoc = MemberCall->getBeginLoc();
SourceLocation ReplacementLoc = MemberCall->getExprLoc();
@@ -150,6 +154,8 @@
if (PParentStmtExpr && ParentCompStmt &&
ParentCompStmt->body_back() == NonMemberCall->getExprStmt())
return;
+ if (ParentReturnStmt)
+ return;
SourceLocation NonMemberLoc = NonMemberCall->getExprLoc();
SourceLocation NonMemberEndLoc = NonMemberCall->getEndLoc();
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