kicad-developers team mailing list archive

[Michael Geselbracht <mgeselbracht3@xxxxxxxxx>]

Hi,
I have added some comments and examples to the code. The archive also
contains a simple main() function (in main.cpp) and a Makefile in order to
test the parser.
The lemon parser generator is required to be installed and the macro
"TEST_MODE" in numeric_evaluator.cpp  needs to be set to 1.

There is also a bugfix in "newString()". Without it an empty input string
results in an invalid output string.

 - Michael

On Thu, Nov 23, 2017 at 11:01 PM, Michael Geselbracht <
mgeselbracht3@xxxxxxxxx> wrote:

> Hi Russell,
>
> the class can handle variables in two ways:
> NumericEvaluator eval;
> 1. Assignment within expressions: eval.process("x=1; y=5");
> 2. Assignment from c++ code: eval.setVar("posx", -3.4);
>
> So it would be up to the dialog to add a variable to an eval object
> within a "focus lost" or "value changed" event.
> In case of (2) the variable "posx" could be used in following expressions.
> But this would require a shared eval object for all text boxes. Like one
> object for each dialog.
>
>  - Michael
>
>
> On Thu, Nov 23, 2017 at 9:02 PM, Russell Oliver <roliver8143@xxxxxxxxx>
> wrote:
>
>> Hi All,
>>
>> Just a query for Michael: can your parser be modified to include
>> references to dialog variables, ie while writing an expression for y axis
>> position, using the label posx or something would refer to the value
>> currently within that text box?
>>
>> Kind Regards
>> Russell
>>
>>
>> On 24 Nov 2017 06:54, "jp charras" <jp.charras@xxxxxxxxxx> wrote:
>>
>> Le 23/11/2017 à 20:45, Michael Geselbracht a écrit :
>> > Hi,
>> > I have replaced the useless file info comments by a GPLv3 header  in
>> order to make my "libeval" code
>> > license-wise compatible to the Kicad project.
>> >
>> >  - Michael
>> >
>> >
>>
>> Thanks Michael,
>>
>> Could you add a bit of comments?
>> Currently God and you know the meaning of the code.
>> One day, only God will know the meaning of this code.
>>
>> Thanks.
>>
>>
>> --
>> Jean-Pierre CHARRAS
>>
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>

Attachment: libeval.zip
Description: Zip archive