1 // RUN: %check_clang_tidy %s readability-function-cognitive-complexity %t -- \
2 // RUN:   -config='{CheckOptions: \
3 // RUN:             [{key: readability-function-cognitive-complexity.Threshold, \
4 // RUN:               value: 0}, \
5 // RUN:              {key: readability-function-cognitive-complexity.DescribeBasicIncrements, \
6 // RUN:               value: "false"} ]}'
7 // RUN: %check_clang_tidy -check-suffix=THRESHOLD5 %s readability-function-cognitive-complexity %t -- \
8 // RUN:   -config='{CheckOptions: \
9 // RUN:             [{key: readability-function-cognitive-complexity.Threshold, \
10 // RUN:               value: 5}, \
11 // RUN:              {key: readability-function-cognitive-complexity.DescribeBasicIncrements, \
12 // RUN:               value: "false"} ]}'
13 // RUN: %check_clang_tidy -check-suffix=IGNORE-MACROS %s readability-function-cognitive-complexity %t -- \
14 // RUN:   -config='{CheckOptions: \
15 // RUN:             [{key: readability-function-cognitive-complexity.Threshold, \
16 // RUN:               value: 0}, \
17 // RUN:              {key: readability-function-cognitive-complexity.IgnoreMacros, \
18 // RUN:               value: "true"}, \
19 // RUN:              {key: readability-function-cognitive-complexity.DescribeBasicIncrements, \
20 // RUN:               value: "false"} ]}'
21 // RUN: %check_clang_tidy -check-suffix=GLOBAL-IGNORE-MACROS %s readability-function-cognitive-complexity %t -- \
22 // RUN:   -config='{CheckOptions: \
23 // RUN:             [{key: readability-function-cognitive-complexity.Threshold, \
24 // RUN:               value: 0}, \
25 // RUN:              {key: IgnoreMacros, \
26 // RUN:               value: "true"}, \
27 // RUN:              {key: readability-function-cognitive-complexity.DescribeBasicIncrements, \
28 // RUN:               value: "false"} ]}'
29 
30 void func_of_complexity_4() {
31   // CHECK-NOTES: :[[@LINE-1]]:6: warning: function 'func_of_complexity_4' has cognitive complexity of 4 (threshold 0) [readability-function-cognitive-complexity]
32   // CHECK-NOTES-IGNORE-MACROS: :[[@LINE-2]]:6: warning: function 'func_of_complexity_4' has cognitive complexity of 4 (threshold 0) [readability-function-cognitive-complexity]
33   // CHECK-NOTES-GLOBAL-IGNORE-MACROS: :[[@LINE-3]]:6: warning: function 'func_of_complexity_4' has cognitive complexity of 4 (threshold 0) [readability-function-cognitive-complexity]
34   if (1) {
35     if (1) {
36     }
37   }
38   if (1) {
39   }
40 }
41 
42 #define MacroOfComplexity10 \
43   if (1) {                  \
44     if (1) {                \
45       if (1) {              \
46         if (1) {            \
47         }                   \
48       }                     \
49     }                       \
50   }
51 
52 void function_with_macro() {
53   // CHECK-NOTES: :[[@LINE-1]]:6: warning: function 'function_with_macro' has cognitive complexity of 11 (threshold 0) [readability-function-cognitive-complexity]
54   // CHECK-NOTES-THRESHOLD5: :[[@LINE-2]]:6: warning: function 'function_with_macro' has cognitive complexity of 11 (threshold 5) [readability-function-cognitive-complexity]
55   // CHECK-NOTES-IGNORE-MACROS: :[[@LINE-3]]:6: warning: function 'function_with_macro' has cognitive complexity of 1 (threshold 0) [readability-function-cognitive-complexity]
56   // CHECK-NOTES-GLOBAL-IGNORE-MACROS: :[[@LINE-4]]:6: warning: function 'function_with_macro' has cognitive complexity of 11 (threshold 0) [readability-function-cognitive-complexity]
57 
58   MacroOfComplexity10;
59 
60   if (1) {
61   }
62 }
63 
64 #define noop \
65   {}
66 
67 #define SomeMacro(x) \
68   if (1) {           \
69     x;               \
70   }
71 
72 void func_macro_1() {
73   // CHECK-NOTES: :[[@LINE-1]]:6: warning: function 'func_macro_1' has cognitive complexity of 2 (threshold 0) [readability-function-cognitive-complexity]
74   // CHECK-NOTES-IGNORE-MACROS: :[[@LINE-2]]:6: warning: function 'func_macro_1' has cognitive complexity of 1 (threshold 0) [readability-function-cognitive-complexity]
75   // CHECK-NOTES-GLOBAL-IGNORE-MACROS: :[[@LINE-3]]:6: warning: function 'func_macro_1' has cognitive complexity of 2 (threshold 0) [readability-function-cognitive-complexity]
76 
77   if (1) {
78   }
79   SomeMacro(noop);
80 }
81 
82 void func_macro_2() {
83   // CHECK-NOTES: :[[@LINE-1]]:6: warning: function 'func_macro_2' has cognitive complexity of 4 (threshold 0) [readability-function-cognitive-complexity]
84   // CHECK-NOTES-IGNORE-MACROS: :[[@LINE-2]]:6: warning: function 'func_macro_2' has cognitive complexity of 1 (threshold 0) [readability-function-cognitive-complexity]
85   // CHECK-NOTES-GLOBAL-IGNORE-MACROS: :[[@LINE-3]]:6: warning: function 'func_macro_2' has cognitive complexity of 4 (threshold 0) [readability-function-cognitive-complexity]
86 
87   if (1) {
88   }
89   // Note that if the IgnoreMacro option is set to 'true', currently also macro
90   // arguments are ignored. Optimally, macros should be treated like function
91   // calls, i.e. the arguments account to the complexity so that the overall
92   // complexity of this function is 2 (1 for the if statement above + 1 for
93   // the if statement in the argument).
94   SomeMacro(if (1) { noop; });
95 }
96