preprocessFileLineNumbers: Difference between revisions
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Killzone Kid (talk | contribs) (#line explained) |
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| Returns the preprocessed content of the given file. The preprocessor is C-like, it supports comments using // or /* and */ and macros defined with #define. |= 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 <tt>#line 1 "aFilename"</tt><br><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> | |||
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> | |||
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> | |||
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. |= Description | |||
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| | | '''preprocessFileLineNumbers''' fileName |= Syntax | ||
|p1= fileName: [[String]] |= Parameter 1 | |p1= fileName: [[String]] - path to the file |= Parameter 1 | ||
| [[String]] |= Return value | | [[String]] - file content containing <tt>#line 1 "aFilename"</tt> |= Return value | ||
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|x1= | |x1= <code>_string = [[preprocessFileLineNumbers]] "A3\ui_f\scripts\IGUI\RscUnitInfo.sqf"</code> | ||
Result is " | Result is: <br> | ||
#line 1 "A3\ui_f\scripts\IGUI\RscUnitInfo.sqf"<br> | |||
disableserialization;<br> | |||
........ |= Example 1 | |||
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<dd class="notedate">Posted on December 17, 2013 | <dd class="notedate">Posted on December 17, 2013 | ||
<dt class="note">'''[[User:Killzone_Kid|Killzone_Kid]]''' | <dt class="note">'''[[User:Killzone_Kid|Killzone_Kid]]''' | ||
<dd class="note">The main difference between [[preprocessFile]] and [[preprocessFileLineNumbers]] is that the latter adds #line | <dd class="note">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. | ||
[[Image:PreprocessFile.jpg]] | [[Image:PreprocessFile.jpg]] | ||
Revision as of 21:55, 17 February 2017
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
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.
