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Diffstat (limited to 'scripts/coccinelle/misc/boolinit.cocci')
| -rw-r--r-- | scripts/coccinelle/misc/boolinit.cocci | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/boolinit.cocci b/scripts/coccinelle/misc/boolinit.cocci new file mode 100644 index 000000000..fed6126e2 --- /dev/null +++ b/scripts/coccinelle/misc/boolinit.cocci @@ -0,0 +1,195 @@ +// SPDX-License-Identifier: GPL-2.0-only +/// Bool initializations should use true and false. Bool tests don't need +/// comparisons. Based on contributions from Joe Perches, Rusty Russell +/// and Bruce W Allan. +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. +// URL: http://coccinelle.lip6.fr/ +// Options: --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@boolok@ +symbol true,false; +@@ +( +true +| +false +) + +@depends on patch@ +bool t; +@@ + +( +- t == true ++ t +| +- true == t ++ t +| +- t != true ++ !t +| +- true != t ++ !t +| +- t == false ++ !t +| +- false == t ++ !t +| +- t != false ++ t +| +- false != t ++ t +) + +@depends on patch disable is_zero, isnt_zero@ +bool t; +@@ + +( +- t == 1 ++ t +| +- t != 1 ++ !t +| +- t == 0 ++ !t +| +- t != 0 ++ t +) + +@depends on patch && boolok@ +bool b; +@@ +( + b = +- 0 ++ false +| + b = +- 1 ++ true +) + +// --------------------------------------------------------------------- + +@r1 depends on !patch@ +bool t; +position p; +@@ + +( +* t@p == true +| +* true == t@p +| +* t@p != true +| +* true != t@p +| +* t@p == false +| +* false == t@p +| +* t@p != false +| +* false != t@p +) + +@r2 depends on !patch disable is_zero, isnt_zero@ +bool t; +position p; +@@ + +( +* t@p == 1 +| +* t@p != 1 +| +* t@p == 0 +| +* t@p != 0 +) + +@r3 depends on !patch && boolok@ +bool b; +position p1; +@@ +( +*b@p1 = 0 +| +*b@p1 = 1 +) + +@r4 depends on !patch@ +bool b; +position p2; +identifier i; +constant c != {0,1}; +@@ +( + b = i +| +*b@p2 = c +) + +@script:python depends on org@ +p << r1.p; +@@ + +cocci.print_main("WARNING: Comparison to bool",p) + +@script:python depends on org@ +p << r2.p; +@@ + +cocci.print_main("WARNING: Comparison of 0/1 to bool variable",p) + +@script:python depends on org@ +p1 << r3.p1; +@@ + +cocci.print_main("WARNING: Assignment of 0/1 to bool variable",p1) + +@script:python depends on org@ +p2 << r4.p2; +@@ + +cocci.print_main("ERROR: Assignment of non-0/1 constant to bool variable",p2) + +@script:python depends on report@ +p << r1.p; +@@ + +coccilib.report.print_report(p[0],"WARNING: Comparison to bool") + +@script:python depends on report@ +p << r2.p; +@@ + +coccilib.report.print_report(p[0],"WARNING: Comparison of 0/1 to bool variable") + +@script:python depends on report@ +p1 << r3.p1; +@@ + +coccilib.report.print_report(p1[0],"WARNING: Assignment of 0/1 to bool variable") + +@script:python depends on report@ +p2 << r4.p2; +@@ + +coccilib.report.print_report(p2[0],"ERROR: Assignment of non-0/1 constant to bool variable") |