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/// Simplify a trivial if-return sequence. Possibly combine with a
/// preceding function call.
///
// Confidence: High
// Copyright: (C) 2014 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2014 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: --no-includes --include-headers
virtual patch
virtual context
virtual org
virtual report
@r depends on patch@
local idexpression e;
identifier i,f,fn;
@@
fn(...) { <...
- e@i =
+ return
f(...);
-if (i != 0) return i;
-return 0;
...> }
@depends on patch@
identifier r.i;
type t;
@@
-t i;
... when != i
@depends on patch@
expression e;
@@
-if (e != 0)
return e;
-return 0;
// -----------------------------------------------------------------------
@s1 depends on context || org || report@
local idexpression e;
identifier i,f,fn;
position p,p1,p2;
@@
fn(...) { <...
* e@i@p = f(...);
if (\(i@p1 != 0\|i@p2 < 0\))
return i;
return 0;
...> }
@s2 depends on context || org || report forall@
identifier s1.i;
type t;
position q,s1.p;
expression e,f;
@@
* t i@q;
... when != i
e@p = f(...);
@s3 depends on context || org || report@
expression e;
position p1!=s1.p1;
position p2!=s1.p2;
@@
*if (\(e@p1 != 0\|e@p2 < 0\))
return e;
return 0;
// -----------------------------------------------------------------------
@script:python depends on org@
p << s1.p;
p1 << s1.p1;
q << s2.q;
@@
cocci.print_main("decl",q)
cocci.print_secs("use",p)
cocci.include_match(False)
@script:python depends on org@
p << s1.p;
p2 << s1.p2;
q << s2.q;
@@
cocci.print_main("decl",q)
cocci.print_secs("use with questionable test",p)
cocci.include_match(False)
@script:python depends on org@
p << s1.p;
p1 << s1.p1;
@@
cocci.print_main("use",p)
@script:python depends on org@
p << s1.p;
p2 << s1.p2;
@@
cocci.print_main("use with questionable test",p)
@script:python depends on org@
p << s3.p1;
@@
cocci.print_main("test",p)
@script:python depends on org@
p << s3.p2;
@@
cocci.print_main("questionable test",p)
// -----------------------------------------------------------------------
@script:python depends on report@
p << s1.p;
p1 << s1.p1;
q << s2.q;
@@
msg = "WARNING: end returns can be simpified and declaration on line %s can be dropped" % (q[0].line)
coccilib.report.print_report(p[0],msg)
cocci.include_match(False)
@script:python depends on report@
p << s1.p;
p1 << s1.p1;
q << s2.q
;
@@
msg = "WARNING: end returns may be simpified if negative or 0 value and declaration on line %s can be dropped" % (q[0].line)
coccilib.report.print_report(p[0],msg)
cocci.include_match(False)
@script:python depends on report@
p << s1.p;
p1 << s1.p1;
@@
msg = "WARNING: end returns can be simpified"
coccilib.report.print_report(p[0],msg)
@script:python depends on report@
p << s1.p;
p2 << s1.p2;
@@
msg = "WARNING: end returns can be simpified if negative or 0 value"
coccilib.report.print_report(p[0],msg)
@script:python depends on report@
p << s3.p1;
@@
msg = "WARNING: end returns can be simpified"
coccilib.report.print_report(p[0],msg)
@script:python depends on report@
p << s3.p2;
@@
msg = "WARNING: end returns can be simpified if tested value is negative or 0"
coccilib.report.print_report(p[0],msg)
|
