[PATCH v3] scripts/coccinelle/misc/boolinit.cocci: semantic patch for bool issues

Julia Lawall
2012-02-10T21:05:18Z

From: Julia Lawall <Julia.Lawall@lip6.fr>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
ERROR's changed to WARNING, except in assignment to non-0/1 case.

scripts/coccinelle/misc/boolinit.cocci | 178 +++++++++++++++++++++++++++++++++
1 file changed, 178 insertions(+)

diff --git a/scripts/coccinelle/misc/boolinit.cocci b/scripts/coccinelle/misc/boolinit.cocci
new file mode 100644
index 0000000..b7edfdb
--- /dev/null
+++ b/scripts/coccinelle/misc/boolinit.cocci
@@ -0,0 +1,178 @@
+/// 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. GPLv2.
+// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Options: -include_headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@depends on patch@
+bool t;
+symbol true;
+symbol false;
+@@
+
+(
+- 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@
+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@
+bool b;
+position p1,p2;
+constant c;
+@@
+(
+*b@p1 = 0
+|
+*b@p1 = 1
+|
+*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 bool to 0/1",p)
+
+@script:python depends on org@
+p1 << r3.p1;
+@@
+
+cocci.print_main("WARNING: Assignment of bool to 0/1",p1)
+
+@script:python depends on org@
+p2 << r3.p2;
+@@
+
+cocci.print_main("ERROR: Assignment of bool to non-0/1 constant",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 bool to 0/1")
+
+@script:python depends on report@
+p1 << r3.p1;
+@@
+
+coccilib.report.print_report(p1[0],"WARNING: Assignment of bool to 0/1")
+
+@script:python depends on report@
+p2 << r3.p2;
+@@
+
+coccilib.report.print_report(p2[0],"ERROR: Assignment of bool to non-0/1 constant")