https://github.com/4m4n-x-B4w4ne created
https://github.com/llvm/llvm-project/pull/120087
As given in the issue #36323 , I added two new options in the
clang-tools-extra/clan-tidy/readibility/ImplicitBoolConversionCheck.cpp and
header file.
I have also written new test cases to test these new options in
test/readibility directory.
>From 03f536888ddc5b7be2514c2d880c6d3119b7f4ee Mon Sep 17 00:00:00 2001
From: 4m4n-x-B4w4ne <125849251+4m4n-x-b4w...@users.noreply.github.com>
Date: Mon, 16 Dec 2024 19:43:42 +0530
Subject: [PATCH 1/3] Update ImplicitBoolConversionCheck.cpp
Added new options in ImplicitBoolConversionCheck CheckConversionToBool and
CheckConversionFromBool.
---
.../readability/ImplicitBoolConversionCheck.cpp | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git
a/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.cpp
b/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.cpp
index f9fd1d903e231e..517a5d2b982751 100644
--- a/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.cpp
@@ -258,14 +258,17 @@ ImplicitBoolConversionCheck::ImplicitBoolConversionCheck(
: ClangTidyCheck(Name, Context),
AllowIntegerConditions(Options.get("AllowIntegerConditions", false)),
AllowPointerConditions(Options.get("AllowPointerConditions", false)),
- UseUpperCaseLiteralSuffix(
- Options.get("UseUpperCaseLiteralSuffix", false)) {}
+ UseUpperCaseLiteralSuffix(Options.get("UseUpperCaseLiteralSuffix",
false)),
+ CheckConversionsToBool(Options.get("CheckConversionsToBool",true)),
+ CheckConversionsFromBool(Options.get("CheckConversionsFromBool",true)) {}
void ImplicitBoolConversionCheck::storeOptions(
ClangTidyOptions::OptionMap &Opts) {
Options.store(Opts, "AllowIntegerConditions", AllowIntegerConditions);
Options.store(Opts, "AllowPointerConditions", AllowPointerConditions);
Options.store(Opts, "UseUpperCaseLiteralSuffix", UseUpperCaseLiteralSuffix);
+ Options.store(Opts,"CheckConversionsToBool",CheckConversionsToBool);
+ Options.store(Opts,"CheckConversionsFromBool",CheckConversionsFromBool);
}
void ImplicitBoolConversionCheck::registerMatchers(MatchFinder *Finder) {
@@ -358,14 +361,14 @@ void
ImplicitBoolConversionCheck::registerMatchers(MatchFinder *Finder) {
void ImplicitBoolConversionCheck::check(
const MatchFinder::MatchResult &Result) {
- if (const auto *CastToBool =
- Result.Nodes.getNodeAs<ImplicitCastExpr>("implicitCastToBool")) {
+ if (CheckConversionsToBool && (const auto *CastToBool =
+ Result.Nodes.getNodeAs<ImplicitCastExpr>("implicitCastToBool"))) {
const auto *Parent = Result.Nodes.getNodeAs<Stmt>("parentStmt");
return handleCastToBool(CastToBool, Parent, *Result.Context);
}
- if (const auto *CastFromBool =
- Result.Nodes.getNodeAs<ImplicitCastExpr>("implicitCastFromBool")) {
+ if (CheckConversionsFromBool && (const auto *CastFromBool =
+ Result.Nodes.getNodeAs<ImplicitCastExpr>("implicitCastFromBool"))) {
const auto *NextImplicitCast =
Result.Nodes.getNodeAs<ImplicitCastExpr>("furtherImplicitCast");
return handleCastFromBool(CastFromBool, NextImplicitCast, *Result.Context);
>From 16c7c95939b4c0c38ebccbbc6cd1da3739244a24 Mon Sep 17 00:00:00 2001
From: 4m4n-x-B4w4ne <125849251+4m4n-x-b4w...@users.noreply.github.com>
Date: Mon, 16 Dec 2024 19:45:37 +0530
Subject: [PATCH 2/3] Update ImplicitBoolConversionCheck.h
Added CheckConversionToBool and CheckConversionFromBool Options in the header
---
.../clang-tidy/readability/ImplicitBoolConversionCheck.h | 2 ++
1 file changed, 2 insertions(+)
diff --git
a/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.h
b/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.h
index 5947f7316e67cc..b0c3c2943e649c 100644
--- a/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.h
+++ b/clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.h
@@ -37,6 +37,8 @@ class ImplicitBoolConversionCheck : public ClangTidyCheck {
const bool AllowIntegerConditions;
const bool AllowPointerConditions;
const bool UseUpperCaseLiteralSuffix;
+ const bool CheckConversionsToBool;
+ const bool CheckConversionsFromBool;
};
} // namespace clang::tidy::readability
>From 0d6fae8b08a4a365c9295ac8a96de2aba9974c98 Mon Sep 17 00:00:00 2001
From: 4m4n-x-B4w4ne <125849251+4m4n-x-b4w...@users.noreply.github.com>
Date: Mon, 16 Dec 2024 19:48:48 +0530
Subject: [PATCH 3/3] Create implicit-bool-conversion-check.cpp
Added new test to check the new options added in the
ImplicitBoolConversionCheck.cpp
---
.../implicit-bool-conversion-check.cpp | 92 +++++++++++++++++++
1 file changed, 92 insertions(+)
create mode 100644
clang-tools-extra/test/clang-tidy/checkers/readability/implicit-bool-conversion-check.cpp
diff --git
a/clang-tools-extra/test/clang-tidy/checkers/readability/implicit-bool-conversion-check.cpp
b/clang-tools-extra/test/clang-tidy/checkers/readability/implicit-bool-conversion-check.cpp
new file mode 100644
index 00000000000000..506769d5a57322
--- /dev/null
+++
b/clang-tools-extra/test/clang-tidy/checkers/readability/implicit-bool-conversion-check.cpp
@@ -0,0 +1,92 @@
+// RUN: %check_clang_tidy %s readability-implicit-bool-conversion %t
+
+// RUN: %check_clang_tidy %s readability-implicit-bool-conversion %t \
+// RUN: -- -config='{CheckOptions: [{key:
readability-implicit-bool-conversion.CheckConversionsToBool, value: false},
{key: readability-implicit-bool-conversion.CheckConversionsFromBool, value:
true}]}'
+
+// RUN: %check_clang_tidy %s readability-implicit-bool-conversion %t \
+// RUN: -- -config='{CheckOptions: [{key:
readability-implicit-bool-conversion.CheckConversionsToBool, value: true},
{key: readability-implicit-bool-conversion.CheckConversionsFromBool, value:
false}]}'
+
+// RUN: %check_clang_tidy %s readability-implicit-bool-conversion %t \
+// RUN: -- -config='{CheckOptions: [{key:
readability-implicit-bool-conversion.CheckConversionsToBool, value: false},
{key: readability-implicit-bool-conversion.CheckConversionsFromBool, value:
false}]}'
+
+// ==========================================================
+// Test Case: Conversions to bool (CheckConversionsToBool=true)
+// ==========================================================
+void TestConversionsToBool() {
+ int x = 42;
+ if (x) // CHECK-MESSAGES: :[[@LINE]]:8: warning: implicit conversion 'int'
-> 'bool'
+ (void)0;
+
+ float f = 3.14;
+ if (f) // CHECK-MESSAGES: :[[@LINE]]:8: warning: implicit conversion 'float'
-> 'bool'
+ (void)0;
+
+ int *p = nullptr;
+ if (p) // CHECK-MESSAGES: :[[@LINE]]:8: warning: implicit conversion 'int *'
-> 'bool'
+ (void)0;
+
+ // Pointer-to-member
+ struct S {
+ int member;
+ };
+ int S::*ptr = nullptr;
+ if (ptr) // CHECK-MESSAGES: :[[@LINE]]:8: warning: implicit conversion 'int
S::*' -> 'bool'
+ (void)0;
+}
+
+// ==========================================================
+// Test Case: Conversions from bool (CheckConversionsFromBool=true)
+// ==========================================================
+void TestConversionsFromBool() {
+ bool b = true;
+
+ int x = b; // CHECK-MESSAGES: :[[@LINE]]:12: warning: implicit conversion
'bool' -> 'int'
+ float f = b; // CHECK-MESSAGES: :[[@LINE]]:12: warning: implicit conversion
'bool' -> 'float'
+ int *p = b; // CHECK-MESSAGES: :[[@LINE]]:12: warning: implicit conversion
'bool' -> 'int *'
+
+ struct S {
+ int member;
+ };
+ int S::*ptr = b; // CHECK-MESSAGES: :[[@LINE]]:16: warning: implicit
conversion 'bool' -> 'int S::*'
+}
+
+// ==========================================================
+// Test Case: Mixed Configurations (ToBool=false, FromBool=true)
+// ==========================================================
+void TestMixedConfig() {
+ int x = 42;
+ if (x) // No warning: CheckConversionsToBool=false
+ (void)0;
+
+ bool b = true;
+ int y = b; // CHECK-MESSAGES: :[[@LINE]]:12: warning: implicit conversion
'bool' -> 'int'
+}
+
+// ==========================================================
+// Test Case: No Diagnostics (ToBool=false, FromBool=false)
+// ==========================================================
+void TestNoDiagnostics() {
+ int x = 42;
+ if (x) // No warning: CheckConversionsToBool=false
+ (void)0;
+
+ bool b = true;
+ int y = b; // No warning: CheckConversionsFromBool=false
+}
+
+// ==========================================================
+// Test Case: Edge Cases and Complex Expressions
+// ==========================================================
+void TestEdgeCases() {
+ bool b = true;
+
+ // Nested implicit casts
+ int x = (b ? 1 : 0); // CHECK-MESSAGES: :[[@LINE]]:12: warning: implicit
conversion 'bool' -> 'int'
+
+ // Function returns implicit bool
+ auto ReturnBool = []() -> bool { return true; };
+ int y = ReturnBool(); // CHECK-MESSAGES: :[[@LINE]]:12: warning: implicit
conversion 'bool' -> 'int'
+
+ // Explicit casts (no diagnostics)
+ int z = static_cast<int>(b); // No warning: explicit cast
+}
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