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README_INDENT.txt
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-------------------------------------------------------------------------------
--- ARTISTIC STYLE MANUAL ----------------------------------------------------
-------------------------------------------------------------------------------
This file is based on the original Astyle (http://astyle.sourceforge.net)
manual. Some parts were stripped, and the command line parameters of AStyle
were replaced by the corresponding Highlight parameters.
You can see from the code samples below how the parameters take effect on
the generated source code.
AndrΘ Simon, July 2004
---
Artistic Style
-------------------------------------------------------------------------------
*A Free, Fast & Small Automatic Formatter for C, C++ and Java source code*
:Author: Tal Davidson
:Email: mail//:davidsont@bigfoot.com
:Homepage: http://astyle.sourceforge.net
:Date: May 2002
:Version: 1.13.8
:Edited: Paul Agapow, July 2003
-------------------------------------------------------------------------------
Artistic Style is a reindenter and reformatter of C++, C and Java
source code.
When indenting source code, we as programmers have a tendency to use
both spaces and tab characters to create the wanted indentation.
Moreover, some editors by default insert spaces instead of tabs when
pressing the tab key, and other editors (Emacs for example) have the
ability to "pretty up" lines by automatically setting up the white space
before the code on the line, possibly inserting spaces in a code that up
to now used only tabs for indentation.
Since the NUMBER of space characters showed on screen for each tab
character in the source code changes between editors (until the user
sets up the number to his liking...), one of the standard problems
facing programmers when moving from one source code editor to another
is that code containing both spaces and tabs that was up to now
perfectly indented, suddently becomes a mess to look at when changing to
another editor. Even if you as a programmer take care to ONLY use spaces
or tabs, looking at other peoples source code can still be problematic.
To address this problem I have created Artistic Style - a series of
filters, written in C++, that automatically reindent & reformat
C/C++/Java source files. These can be used from a command line, or it
can be incorporated as classes in another C++ program.
Please read the license <license.html>. Artistic Style may be used and
distributed under EITHER the *Artistic License* or the *GNU General Public
License (GPL)*.
Predefined indentation and reformatting styles
-------------------------------------------------------------------------------
Apply an indentation scheme with --format-style.
--format-style=ansi
ANSI style formatting/indenting::
namespace foospace
{
int Foo()
{
if (isBar)
{
bar();
return 1;
}
else
return 0;
}
}
--format-style=kr
Kernighan&Ritchie style formatting/indenting::
namespace foospace {
int Foo() {
if (isBar) {
bar();
return 1;
} else
return 0;
}
}
--format-style=linux
Linux style formatting/indenting (brackets are broken apart from
class/function declarations, but connected to command lines, and indents
are set to 8 spaces)::
namespace foospace
{
int Foo()
{
if (isBar) {
bar();
return 1;
} else
return 0;
}
}
--format-style=gnu
GNU style formatting/indenting::
namespace foospace
{
int Foo()
{
if (isBar)
{
bar();
return 1;
}
else
return 0;
}
}
--format-style=java
Java style formatting/indenting::
class foospace {
int Foo() {
if (isBar) {
bar();
return 1;
} else
return 0;
}
}
-------------------------------------------------------------------------------
The following indentation options are currently available:
$INDENT-SPACES=<num>
Indent using <num> spaces per indent
$INDENT-CLASSES=<true / false>
Indent `class` blocks so that the headers `public:`, `protected:` and
`private:` are indented in the class block. The default::
class Foo
{
public:
Foo();
virtual ~Foo();
};
becomes::
class Foo
{
public:
Foo();
virtual ~Foo();
};
$INDENT-SWITCHES=<true / false>
Indent `switch` blocks so that the `case XXX:` headers are indented in
the class block. The default::
switch (foo)
{
case 1:
a += 2;
break;
default:
a += 2;
break;
}
becomes::
switch (foo)
{
case 1:
a += 2;
break;
default:
a += 2;
break;
}
$INDENT-CASES=<true / false>
Indent `case XXX:` lines so that they are flush with the lines under
them. The default::
switch (foo)
{
case 1:
{
a += 2;
break;
}
default:
{
a += 2;
break;
}
}
becomes::
switch (foo)
{
case 1:
{
a += 2;
break;
}
default:
{
a += 2;
break;
}
}
$INDENT-BRACKETS=<true / false>
Add extra indentation to brackets. The default::
if (isFoo)
{
bar();
}
else
{
anotherBar();
}
becomes::
if (isFoo)
{
bar();
}
else
{
anotherBar();
}
$INDENT-BLOCKS=<true / false>
Add extra indentation to entire blocks. The default::
if (isFoo)
{
bar();
}
else
anotherBar();
becomes::
if (isFoo)
{
bar();
}
else
anotherBar();
$INDENT-NAMESPACES=<true / false>
Add extra indentation to namespaces. The default::
namespace foospace
{
class Foo
{
public:
Foo();
virtual ~Foo();
};
}
becomes::
namespace foospace
{
class Foo
{
public:
Foo();
virtual ~Foo();
};
}
$INDENT-LABELS=<true / false>
Add extra indentation to labels so they they appear 1 indent less than
the current indentation, rather than being flushed to the left. The
default::
int foospace()
{
while (isFoo)
{
...
goto error;
error:
...
}
}
becomes::
int foospace()
{
while (isFoo)
{
...
goto error;
error:
...
}
}
$MAX-INSTATEMENT-INDENT=<num>
Indent a maximal # spaces in a continuous statement, relatively to the
previous line (e.g. `--max-instatement-indent=40`).
$MIN-CONDITIONAL-INDENT=<num>
Set the minimal indent that is added when a header is built of
multiple-lines. This indent makes helps to easily separate the header
from the command statements that follow. The default setting for this
option is twice the current indent. (e.g.`--min-conditional-indent=8`).
The default::
// default setting makes this non-bracketed code clear
if (a < b
|| c > d)
foo++;
// but creates an exaggerated indent in this bracketed code
if (a < b
|| c > d)
{
foo++;
}
When setting `--min-conditional=0`::
// setting makes this non-bracketed code less clear
if (a < b
|| c > d)
foo++;
// but makes this bracketed code prettier
if (a < b
|| c > d)
{
foo++;
}
-------------------------------------------------------------------------------
The following formatting options are currently available:
$BRACKETS=<break>
Break brackets from their pre-block statements (i.e. ANSI C, C++
style)::
if (isFoo)
{
bar();
}
else
{
anotherBar();
}
$BRACKETS=<attach>
Attach brackets to their pre-block statements (i.e. Java, K&Rstyle)::
if (isFoo){
bar();
} else {
anotherBar();
}
$BRACKETS=<linux>
Break brackets from class/function declarations, but attach brackets to
pre-block command statements::
namespace foospace
{
int Foo()
{
if (isBar) {
bar();
return 1;
} else
return 0;
}
}
$BRACKETS=<break-closing-headers>
When used with either `--brackets=attach` or `--brackets=linux`, breaks
closing headers (e.g. `else`, `catch`, ...) from their immediately
preceding closing brackets::
if (isFoo) {
bar();
}else {
anotherBar();
}
becomes::
if (isFoo) {
bar();
}
else {
anotherBar();
}
$BREAK-BLOCKS=<true | false>
Pad empty lines around header blocks (e.g. `if`, `while`...)::
isFoo = true;
if (isFoo) {
bar();
} else {
anotherBar();
}
isBar = false;
becomes::
isFoo = true;
if (isFoo) {
bar();
} else {
anotherBar();
}
isBar = false;
$BREAK-BLOCKS=<all>
Pad empty lines around header blocks (e.g. `if`, `while` ...). Treat
closing header blocks (e.g. `else`, `catch`) as stand-alone blocks::
isFoo = true;
if (isFoo) {
bar();
} else {
anotherBar();
}
isBar = false;
becomes::
isFoo = true;
if (isFoo) {
bar();
} else {
anotherBar();
}
isBar = false;
$BREAK-ELSEIFS=<true / false>
Break `else if()` header combinations into seperate lines::
if (isFoo) {
bar();
} else if (isBar()){
anotherBar();
}
becomes::
if (isFoo) {
bar();
} else
if (isBar()){
anotherBar();
}
$ONE-LINE=<keep-statements>
Don't break complex statements and multiple statements residing in a
single line. Thus the following code remains as is::
if (isFoo)
{
isFoo = false; cout << isFoo << endl;
}
if (isFoo) DoBar();
$ONE-LINE=<keep-blocks>
Don't break one-line blocks. Thus the following code remains as is::
if (isFoo)
{ isFoo = false; cout << isFoo << endl; }
$PAD=<oper>
Insert space padding around operators only::
if (isFoo)
a = bar((b-c)*a,d--);
becomes::
if (isFoo)
a = bar((b - c) * a, d--);
$PAD=<paren>
Insert space padding around parentheses only::
if (isFoo)
a = bar((b-c)*a,*d--);`
becomes::
if ( isFoo )
a = bar( ( b-c )*a, d-- );
$PAD=<all>
Insert space padding around operators AND parentheses::
if (isFoo)
a = bar((b-c)a,d--);
becomes::
if ( isFoo )
a = bar( ( b - c ) * a, d-- );
Artistic Style Acknowledgements
-------------------------------------------------------------------------------
Thanks to: Jim Watson, Fred Shwartz, W. Nathaniel Mills III, Danny
Deschenes, Andre Houde, Richard Bullington, Paul-Michael Agapow, Daryn
Adler for their patches and contributions to Artistic Style !!! Special
thanks to Richard Bullington and MicroState <http://www.microstate.com> for
giving Artistic Style its mailing-list !!! Special thanks to SourceForge
<http://www.sourceforge.net> for giving Artistic Style its home !!!
Thanks to all the dedicated beta-testers and bug notifiers !!!