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Changes between Version 22 and Version 23 of Sysel


Ignore:
Timestamp:
2010-05-20T19:11:55Z (11 years ago)
Author:
Jiri Svoboda
Comment:

Nit nit.

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  • Sysel

    v22 v23  
    6363==== Modules ====
    6464
    65 Modules provide a complementary and finer-grained means of decomposition. Usually each source file corresponds to exactly one module. For each module we define its (unqualified) name and fully qualified name of the package it belongs to (which 'anchors' it in the code base). Conversely, each package specifies all modules it consists of. Thus for each module we can determine which package it belongs to and for each package we can determine all modules (and thus all symbols) it consists of.
     65Modules provide a complementary and finer-grained means of decomposition. Usually each source file corresponds to exactly one module. For each module we define its (unqualified) name and fully qualified name of the package it belongs to (which 'anchors' it in the code base). Conversely, each package specifies all modules it consists of. Consequently, for each module we can determine which package it belongs to and for each package we can determine all modules (and thus all symbols) it consists of.
    6666
    67 Thus modules allow the source code to be broken into separate files and at the same time tie it together in a formal manner. When building a package or program, there is thus no need to specify all its source files informally in a makefile. It is sufficient to point the compiler to directories where it should look for source files and tell it which package we want built.
     67As we explained, modules allow the source code to be broken into separate files and at the same time tie it together in a formal manner. When building a package or program, there is thus no need to specify all its source files informally in a makefile. It is sufficient to point the compiler to directories where it should look for source files and tell it which package we want built.
    6868
    69 Modules do not represent a namespace. Any symbols defined or imported in one module will be accessible (unqualified) in any other module within the same package. Names of global symbols in all modules of a package thus must be coordinated. Note that due to object-oriented nature of the language there are usually not very many global symbols defined in a package.
     69Modules do not represent a namespace. Any symbols defined or imported in one module will be accessible (unqualified) in any other module within the same package. Names of global symbols in all modules of a package must therefore be coordinated. Note that due to object-oriented nature of the language there are usually not very many global symbols defined in a package and also packages are assumed to be under the control of a single entity.
    7070
    7171Definitions of classes can be split across multiple modules (but not packages). Thus large classes can be split accross multiple source files.