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Writing rules: use 'cppcheck --rule=.+' instead of 'cppcheck --debug' to see simplified code

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Daniel Marjamäki 2010-12-05 14:08:49 +01:00
parent 68f2c47c5c
commit ac60a41a7e
1 changed files with 9 additions and 14 deletions
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23
man/writing-rules.docbook
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@ -140,24 +140,19 @@
free(p);
}</programlisting>
<para>To see the simplified code use <literal>cppcheck --debug
dealloc.cpp</literal>.</para>
<para>To see the simplified code you can use <literal>cppcheck
--rule=".+" dealloc.cpp</literal>:</para>
<programlisting>##file dealloc.cpp
1: void f ( ) {
2: if ( p ) {
3: free ( p ) ; }
4: }</programlisting>
<programlisting>$ ./cppcheck --rule=".+" dealloc.cpp
Checking dealloc.cpp...
[dealloc.cpp:1]: (style) found ' void f ( ) { if ( p ) { free ( p ) ; } }'</programlisting>
<para>In the <literal>--debug</literal> output there are line feeds and
line numbers. But the newlines and line numbers are only there to make
the output easier to read. The real simplified code is written on a
single line:</para>
<para>In short, the simplified code is:</para>
<programlisting>void f ( ) { if ( p ) { free ( p ) ; } }</programlisting>
<programlisting> void f ( ) { if ( p ) { free ( p ) ; } }</programlisting>
<para>Now we can use <literal>cppcheck --rule</literal> to develop a
regular expression.</para>
<para>Now that the simplified code is known we can create a regular
expression:</para>
<programlisting>$ cppcheck --rule="if \( p \) { free \( p \) ; }" dealloc.cpp
Checking dealloc.cpp...