[Scilab-users] Emulate Object Oriented Programming

[michael.baudin at contrib.scilab.org]

Hi,

I have a problem with the possibility of emulating OOP in Scilab with
tlists, that prevents me to have safe "set" methods.
In the script in attachment, I created a human "class" with
two fields: name (a scalar string) and weight (a scalar real).

The problem is : how have a "set" method which is both simple and safe 
?

Here is how this class works :

bob=human_new()

This is simple, but is unsafe:

bob.name="Bob"
bob.weight=70
bob.name=-12 // Oups !

These statements are safe:

bob=human_set(bob,"name","Will")
bob=human_set(bob,"weight",80)

It is safe in the sense that the following statements produce an error:

bob=human_set(bob,"weight",-12)

The function "human_set" is safe but somewhat unconvenient to use.

The question is :

How to make so that bob.name="Will" makes the code 
bob=human_set(bob,"name","Will") be executed ? Can overloading do this ?

Is the only possible way is at the C level with the sci_percent* 
functions that Denizet wrote :

http://gitweb.scilab.org/?p=scilab.git;a=blob;f=scilab/modules/xml/sci_gateway/cpp/sci_percent_XMLAttr_size.cpp;h=9d3b361bcbe6416e62f422dd448aa72d65f1fe4c;hb=HEAD

for the XML module ?

Best regards,

Michaël

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