[clang-tools-extra] Add clang-tidy check readability-math-missing-parentheses (PR #84481)

[Bhuminjay Soni via cfe-commits]

================
@@ -0,0 +1,74 @@
+// RUN: %check_clang_tidy %s readability-math-missing-parentheses %t
+
+// FIXME: Add something that triggers the check here.
+
+int foo(){
+    return 5;
+}
+
+int bar(){
+    return 4;
+}
+
+class fun{
+public:  
+    int A;
+    double B;
+    fun(){
+        A = 5;
+        B = 5.4;
+    }
+};
+
+void f(){
+    //CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    //CHECK-FIXES: int a = (1 + (2 * 3));
+    int a = 1 + 2 * 3; 
+
+    int b = 1 + 2 + 3; // No warning
+
+    int c = 1 * 2 * 3; // No warning
+
+    //CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    //CHECK-FIXES: int d = ((1 + (2 * 3)) - (4 / 5));
+    int d = 1 + 2 * 3 - 4 / 5;
+
+    //CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    //CHECK-FIXES: int e = ((1 & (2 + 3)) | (4 * 5));
+    int e = 1 & 2 + 3 | 4 * 5;
+
+    //CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    //CHECK-FIXES: int f = ((1 * -2) + 4);
+    int f = 1 * -2 + 4;
+
+    //CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    //CHECK-FIXES: int g = ((((1 * 2) * 3) + 4) + 5);
+    int g = 1 * 2 * 3 + 4 + 5;
+
+    // CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    // CHECK-FIXES: int h = ((120 & (2 + 3)) | (22 * 5));
+    int h = 120 & 2 + 3 | 22 * 5;
+
+    int i = 1 & 2 & 3; // No warning
+
+    int j = 1 | 2 | 3; // No warning
+
+    int k = 1 ^ 2 ^ 3; // No warning
+
+    // CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    // CHECK-FIXES: int l = ((1 + 2) ^ 3);
+    int l = 1 + 2 ^ 3;
+
+    // CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    // CHECK-FIXES: int m = ((2 * foo()) + bar());
+    int m = 2 * foo() + bar();
+
+    // CHECK-MESSAGES: :[[@LINE+2]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    // CHECK-FIXES: int n = ((1.05 * foo()) + double(bar()));
+    int n = 1.05 * foo() + double(bar());
+
+    // CHECK-MESSAGES: :[[@LINE+3]]:13: warning: add parantheses to clarify the precedence of operations [readability-math-missing-parentheses]
+    // CHECK-FIXES: int o = (1 + (obj.A * 3)) + obj.B;
+    fun obj;
+    int o = 1 + obj.A * 3 + obj.B; 
+}
----------------
11happy wrote:

done

https://github.com/llvm/llvm-project/pull/84481