preprocessFileLineNumbers: Difference between revisions

From Bohemia Interactive Community
Jump to navigation Jump to search
No edit summary
(Undo part of the last change and fix grammar and add more Info to note)
Line 7: Line 7:
____________________________________________________________________________________________
____________________________________________________________________________________________


| Returns the preprocessed content of the given file. The preprocessor is C-like, it supports comments using // or /* and */ and [[PreProcessor_Commands]]. The preprocessor add also a default debug entrypoint for compiler at the begining of script: <tt>#line 1 "aFilename"</tt><br><br>
| Returns the preprocessed content of the given file. The preprocessor is C-like, it supports comments using // or /* and */ and macros defined with #define. The return is  file content starting with <tt>#line 1 "aFilename"</tt><br><br>


The '''#line''' keyword can be used in any script that are not preprocess, or with preprocess script with extra macro to protect reserverd sharp character. The format is:<br>
<u>This is how mysterious '''#line''' keyword works:</u><br><br>
The keyword can be used in any script, even the one made on-the-fly and executed in debug console for example. The format is:<br>
<tt>'''#line''' <number> "<name>"</tt><br>
<tt>'''#line''' <number> "<name>"</tt><br>
followed by new line. <number> could be only positive integer and <name> could be any name. This will be used only if an error occurs in the script. The error will contain the line:
followed by new line. <number> could be any positive integer and <name> could be any name. This will be used only if an error occurs in the script. The error will contain the line:
<tt>File <filename>, line <linenumber></tt><br>
<tt>File <filename>, line <linenumber></tt><br>
where <filename> will be the <name> you set and <linenumber> will be <number> + how many lines it is from the '''#line''' line. If the error happened on the line right under '''#line''' it will add 0 to <number>, if on second line, it will add 1 etc.<br><br>
where <filename> will be the <name> you set and <linenumber> will be <number> + how many lines it is from the '''#line''' line. If the error happened on the line right under '''#line''' it will add 0 to <number>, if on second line, it will add 1 etc.<br><br>
Line 61: Line 62:
<dt class="note">[[User:code34|code34]]</dt>
<dt class="note">[[User:code34|code34]]</dt>
<dd class="note">
<dd class="note">
To custom #line directive with preprocessFileLineNumbers activate, you can use a preprocess macro like this:<br>
The #line directive get's removed from the output.<br>
So to add a custom #line directive before while using preprocessFileLineNumbers, you have to use a preprocessor macro like this:<br>
''#define'' DEBUG(sharp,name) sharp##line 0 name<br>
''#define'' DEBUG(sharp,name) sharp##line 0 name<br>
and add this at the right place in your code<br>
and add this at the right place in your code<br>
DEBUG(#,"yourdebugentrypoint");
DEBUG(#,"your filename");


This way you can have custom filenames in error messages.


</dd>
</dd>
</dl>
</dl>
<!-- DISCONTINUE Notes -->
<!-- DISCONTINUE Notes -->

Revision as of 23:22, 4 November 2017

-wrong parameter ("Arma") defined!-1.00
Hover & click on the images for description

Description

Description:
Returns the preprocessed content of the given file. The preprocessor is C-like, it supports comments using // or /* and */ and macros defined with #define. The return is file content starting with #line 1 "aFilename"

This is how mysterious #line keyword works:

The keyword can be used in any script, even the one made on-the-fly and executed in debug console for example. The format is:
#line <number> "<name>"
followed by new line. <number> could be any positive integer and <name> could be any name. This will be used only if an error occurs in the script. The error will contain the line: File <filename>, line <linenumber>
where <filename> will be the <name> you set and <linenumber> will be <number> + how many lines it is from the #line line. If the error happened on the line right under #line it will add 0 to <number>, if on second line, it will add 1 etc.

It is possible to use more than one #line keywords, but it seems having just one at the top of the script is enough to pinpoint position of the error easily.
Groups:
Uncategorised

Syntax

Syntax:
preprocessFileLineNumbers fileName
Parameters:
fileName: String - path to the file
Return Value:
String - file content containing #line 1 "aFilename"

Examples

Example 1:
_string = preprocessFileLineNumbers "A3\ui_f\scripts\IGUI\RscUnitInfo.sqf" Result is:
#line 1 "A3\ui_f\scripts\IGUI\RscUnitInfo.sqf"
disableserialization;
........

Additional Information

See also:
preprocessFileloadFileFunctionSQF syntaxcallspawnexecVMPreProcessor Commands

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note

Notes

Posted on December 17, 2013
Killzone_Kid
The main difference between preprocessFile and preprocessFileLineNumbers is that the latter adds #line keyword to the target file, which allows to log the __LINE__ error happened at and the __FILE__ error happened in. PreprocessFile.jpg

Bottom Section

Posted on November 4, 2017 - 10:16 (UTC)
code34
The #line directive get's removed from the output.
So to add a custom #line directive before while using preprocessFileLineNumbers, you have to use a preprocessor macro like this:
#define DEBUG(sharp,name) sharp##line 0 name
and add this at the right place in your code
DEBUG(#,"your filename"); This way you can have custom filenames in error messages.
Retrieved from "https://community.bistudio.com/wiki?title=preprocessFileLineNumbers&oldid=104629"