понедельник, 12 октября 2015 г.

#825. Description of the meta-meta-model

Original in Russian: http://programmingmindstream.blogspot.ru/2015/08/blog-post_20.html
The previous series was here – Take your mind off objects emulation for a while and let’s get to meta-model and code generation

I have “decorated” it a bit.

https://bitbucket.org/lulinalex/mindstream/src/87bd8df93e76bb4d154a75cf9652e8263c251050/Examples/Scripts/CodeGeneration/CodeGen3.ms.script?at=B284

The result is as follows:

USES
 metaMACRO.ms.dict
;
 
Test CodeGen
 // %SUMMARY это is meta information that allows linking the documentation to the code elements.
//   Consequently, the documentation is available from the script engine.
 %SUMMARY '
 That is where we test meta-model building, model building and then code generation.'
 ;
 
// ---------------------------------------------------------------------------
 
meta-meta-model-begin
 'That is where we determine axiomatic of meta-meta model and extract it in a separate dictionary later.
 '
 
StereotypeStereotypeProducer meta
 %SUMMARY '
 Base element of meta-model determined
 This is the element that allows us to pull the rest “by hair out of the swamp”
 Other primitives are derived from this one’
 ; // %SUMMARY 
; // meta
 
meta-meta-model-end
 
// ---------------------------------------------------------------------------
 
// ---------------------------------------------------------------------------
 
meta-model-begin
 ' This is where we determine axiomatic of the specific model.
  We will extract it in a separate dictionary later.
 
  Next we will determine the UML concepts –
  https://en.wikipedia.org/wiki/Unified_Modeling_Language
 
  There are CATEGORIES and CLASSES in it
 
  Actually, they merely differ from each other, however, let it be so 
  for it was so decided by some wise men
 
Let’s start with them:
  '
 
meta-model-end
 
// ---------------------------------------------------------------------------
 
USES
 CodeDump.ms.dict
 // - the CodeDump.ms.dict is loaded so we can “see” the DumpElement word
;
 
@SELF DumpElement
//  - the CodeGen element and its contents are dumped in a standard output device.
//    We only do it to debug what we’ve written.
 
; // CodeGen
 
CodeGen

Again, the code is somewhat “self-documented”.

See the following words:

%SUMMARY

meta-meta-model-begin

meta-model-begin

Some time later I will tell about the self-descriptiveness” and how to use.

Let me give you a hint – “requirements and tests”,  UseCase, TDD and BDD.


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