X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=doc%2Fmanual%2Fstyle.txt;h=0bfae35f70fe33085aa3d5430d853a9d530e3e70;hp=b9a7612f0e85225e1b1bda4827f51672a36e403a;hb=ab597027ea98d4fa39980f9674dced42b5193b79;hpb=c5de7b6bd702e90bfd69d1c2efdd81713aefb191;ds=sidebyside
diff --git a/doc/manual/style.txt b/doc/manual/style.txt
index b9a7612f0e..0bfae35f70 100644
--- a/doc/manual/style.txt
+++ b/doc/manual/style.txt
@@ -49,7 +49,7 @@ OpenOCD project.
- limit adjacent empty lines to at most two (2).
- remove any trailing empty lines at the end of source files
- do not "comment out" code from the tree; instead, one should either:
- -# remove it entirely (Subversion can retrieve the old version), or
+ -# remove it entirely (git can retrieve the old version), or
-# use an @c \#if/\#endif block.
Finally, try to avoid lines of code that are longer than than 72-80 columns:
@@ -66,19 +66,42 @@ Finally, try to avoid lines of code that are longer than than 72-80 columns:
- most identifiers must use lower-case letters (and digits) only.
- macros must use upper-case letters (and digits) only.
- OpenOCD identifiers should NEVER use @c MixedCaps.
-- structure names must end with the '_s' suffix.
-- typedef names must end with the '_t' suffix.
+- @c typedef names must end with the '_t' suffix.
+ - This should be reserved for types that should be passed by value.
+ - Do @b not mix the typedef keyword with @c struct.
- use underline characters between consecutive words in identifiers
(e.g. @c more_than_one_word).
+@section style_include_guards Include Guards
+
+Every header file should have a unique include guard to prevent multiple
+inclusion.
+To guarantee uniqueness, an include guard should be based on the filename and
+the full path in the project source tree.
+
+For the header file src/helper/jim-nvp.h, the include guard would look like
+this:
+
+@code
+#ifndef OPENOCD_HELPER_JIM_NVP_H
+#define OPENOCD_HELPER_JIM_NVP_H
+
+/* Your code here. */
+
+#endif /* OPENOCD_HELPER_JIM_NVP_H */
+@endcode
+
@section stylec99 C99 Rules
- inline functions
- @c // comments -- in new code, prefer these for single-line comments
- trailing comma allowed in enum declarations
-- designated initializers (@{ .field = value @})
-- variables declarations may be mixed with code
+- designated initializers ( .field = value )
+- variables declarations should occur at the point of first use
- new block scopes for selection and iteration statements
+- use malloc() to create dynamic arrays. Do @b not use @c alloca
+or variable length arrays on the stack. non-MMU hosts(uClinux) and
+pthreads require modest and predictable stack usage.
@section styletypes Type Guidelines
- use native types (@c int or @c unsigned) if the type is not important
@@ -106,6 +129,20 @@ int f(int x1, int x2)
int y = f(x1, x2 - x1);
...
}
+@endcode
+- Separate assignment and logical test statements. In other words, you
+should write statements like the following:
+@code
+// separate statements should be preferred
+result = foo();
+if (ERROR_OK != result)
+ ...
+@endcode
+More directly, do @b not combine these kinds of statements:
+@code
+// Combined statements should be avoided
+if (ERROR_OK != (result = foo()))
+ return result;
@endcode
*/
@@ -135,14 +172,14 @@ comments.
* in blocks such as the one in which this example appears in the Style
* Guide. See the Doxygen Manual for the full list of commands.
*
- * @param foo For a function, describe the parameters (e.g. @a foo).
+ * @param foo For a function, describe the parameters (e.g. @a foo).
* @returns The value(s) returned, or possible error conditions.
*/
@endverbatim
- -# The block should start on the line following the opening @c /**.
- -# The end of the block, \f$*/\f$, should also be on its own line.
+ -# The block should start on the line following the opening @c /\**.
+ -# The end of the block, @c */, should also be on its own line.
-# Every line in the block should have a @c '*' in-line with its start:
- - A leading space is required to align the @c '*' with the @c /** line.
+ - A leading space is required to align the @c '*' with the @c /\** line.
- A single "empty" line should separate the function documentation
from the block of parameter and return value descriptions.
- Except to separate paragraphs of documentation, other extra
@@ -162,7 +199,7 @@ The following guidelines apply to all Doxygen comment blocks:
-# @c function_name() can be used to reference functions
(e.g. flash_set_dirty()).
-# @c struct_name::member_name should be used to reference structure
- fields in the documentation (e.g. @c flash_driver_s::name).
+ fields in the documentation (e.g. @c flash_driver::name).
-# URLS get converted to markup automatically, without any extra effort.
-# new pages can be linked into the heirarchy by using the @c \@subpage
command somewhere the page(s) under which they should be linked:
@@ -215,7 +252,7 @@ This file contains the @ref pagename page.
@endverbatim
For an example, the Doxygen source for this Style Guide can be found in
-@c doc/manual/style.txt, alongside other parts of The Manual.
+@c doc/manual/style.txt, alongside other parts of The Manual.
*/
/** @page styletexinfo Texinfo Style Guide
@@ -290,7 +327,7 @@ For technical reference material:
- Else it's a "Config Command" if it must be used before the
configuration stage completes.
- For a "Driver", list its name.
- - Use BNF style regular expressions to define parameters:
+ - Use EBNF style regular expressions to define parameters:
brackets around zero-or-one choices, parentheses around
exactly-one choices.
- Use \@option, \@file, \@var and other mechanisms where appropriate.
@@ -330,7 +367,7 @@ Likewise, the @ref primerlatex for using this guide needs to be completed.
This page provides some style guidelines for using Perl, a scripting
language used by several small tools in the tree:
--# Ensure all Perl scripts use the proper suffix (@c .pl for scripts, and
+-# Ensure all Perl scripts use the proper suffix (@c .pl for scripts, and
@c .pm for modules)
-# Pass files as script parameters or piped as input:
- Do NOT code paths to files in the tree, as this breaks out-of-tree builds.
@@ -344,17 +381,15 @@ perl script.pl
Maintainers must also be sure to follow additional guidelines:
-# Ensure that Perl scripts are committed as executables:
- - Use "chmod +x script.pl
"
- @a before using "svn add script.pl
", or
- - Use "svn ps svn:executable '*' script.pl
"
- @a after using "svn add script.pl
".
+ Use "chmod +x script.pl
"
+ @a before using "git add script.pl
"
*/
/** @page styleautotools Autotools Style Guide
This page contains style guidelines for the OpenOCD autotools scripts.
-The following guidelines apply to the @c configure.in file:
+The following guidelines apply to the @c configure.ac file:
- Better guidelines need to be developed, but until then...
- Use good judgement.