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-rw-r--r--compilerplugins/clang/test/flatten.cxx191
1 files changed, 191 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/flatten.cxx b/compilerplugins/clang/test/flatten.cxx
new file mode 100644
index 0000000000..300067b9bf
--- /dev/null
+++ b/compilerplugins/clang/test/flatten.cxx
@@ -0,0 +1,191 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <exception>
+
+extern int foo();
+extern int bar(int = 0);
+class Class {};
+
+void top1() {
+ if (foo() == 1) { // expected-note {{if condition here [loplugin:flatten]}}
+ foo();
+ } else {
+ throw std::exception(); // expected-error {{unconditional throw in else branch, rather invert the condition, throw early, and flatten the normal case [loplugin:flatten]}}
+ }
+ if (foo() == 1) {
+ Class aClass;
+ (void)aClass;
+ } else {
+ throw std::exception(); // no warning expected
+ }
+ if (foo() == 1) { // expected-note {{if condition here [loplugin:flatten]}}
+ Class aClass;
+ (void)aClass;
+ } else {
+ throw std::exception(); // expected-error {{unconditional throw in else branch, rather invert the condition, throw early, and flatten the normal case [loplugin:flatten]}}
+ }
+}
+
+void top2() {
+ if (foo() == 2) {
+ throw std::exception(); // expected-error {{unconditional throw in then branch, just flatten the else [loplugin:flatten]}}
+ } else {
+ foo();
+ }
+ if (foo() == 2) {
+ throw std::exception(); // no warning expected
+ } else {
+ Class aClass;
+ (void)aClass;
+ }
+ if (foo() == 2) {
+ throw std::exception(); // expected-error {{unconditional throw in then branch, just flatten the else [loplugin:flatten]}}
+ } else {
+ Class aClass;
+ (void)aClass;
+ }
+}
+
+void top3() {
+ // no warning expected
+ if (foo() == 2) {
+ throw std::exception();
+ } else {
+ Class aClass;
+ (void)aClass;
+ }
+ int x = 1;
+ (void)x;
+}
+
+void top4() {
+ // no warning expected
+ if (foo() == 2) {
+ Class aClass;
+ (void)aClass;
+ } else {
+ throw std::exception();
+ }
+ int x = 1;
+ (void)x;
+}
+
+void top5() {
+#if 1
+ if (foo() == 2) {
+ if (foo() == 3) { // expected-note {{if condition here [loplugin:flatten]}}
+ bar();
+ } else {
+ throw std::exception(); // expected-error {{unconditional throw in else branch, rather invert the condition, throw early, and flatten the normal case [loplugin:flatten]}}
+ }
+ } else
+#endif
+ throw std::exception(); // no warning expected
+}
+
+int main() {
+ // no warning expected
+ if (bar() == 3) {
+ throw std::exception();
+ } else {
+ throw std::exception();
+ }
+}
+
+void top6() {
+ // no warning expected
+ if (foo() == 2) {
+ Class aClass;
+ (void)aClass;
+ } else if (foo() == 2) {
+ Class aClass;
+ (void)aClass;
+ } else {
+ throw std::exception();
+ }
+ int x = 1;
+ (void)x;
+}
+
+void top7() {
+ // no warning expected
+ if (foo() == 1) {
+ throw std::exception();
+ } else if (foo() == 2) {
+ throw std::exception();
+ } else {
+ throw std::exception();
+ }
+}
+
+void top8() {
+ if (foo() == 1) {
+ if (foo() == 2) {
+ throw std::exception(); // expected-error {{unconditional throw in then branch, just flatten the else [loplugin:flatten]}}
+ } else {
+ bar();
+ }
+ } else if (foo() == 2) {
+ bar(1);
+ } else {
+ bar(2);
+ }
+}
+
+void top9() {
+ if (foo() == 1) { // expected-error {{large if statement at end of function, rather invert the condition and exit early, and flatten the function [loplugin:flatten]}}
+ Class aClass1;
+ (void)aClass1;
+ Class aClass2;
+ (void)aClass2;
+ Class aClass3;
+ (void)aClass3;
+ Class aClass4;
+ (void)aClass4;
+ Class aClass5;
+ (void)aClass5;
+ Class aClass6;
+ (void)aClass6;
+ }
+}
+
+void top10() {
+ // no warning expected
+ if (foo() == 2) {
+ if (foo() == 1) {
+ Class aClass1;
+ (void)aClass1;
+ Class aClass2;
+ (void)aClass2;
+ Class aClass3;
+ (void)aClass3;
+ }
+ }
+}
+
+int top11() {
+ // no warning expected
+ if (foo() == 1) {
+ Class aClass1;
+ (void)aClass1;
+ Class aClass2;
+ (void)aClass2;
+ Class aClass3;
+ (void)aClass3;
+ Class aClass4;
+ (void)aClass4;
+ Class aClass5;
+ (void)aClass5;
+ Class aClass6;
+ (void)aClass6;
+ }
+ return 1;
+}
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */