Scheme - Re: [ANN] Portable macros and modules

Author

Re: [ANN] Portable macros and modules - version 1.9

Andre

2005-08-02, 5:03 pm

I would like to announce version 1.9 of

"Portable hygienic macros and modules"

available at

http://www.het.brown.edu/people/andre/macros/index.htm

A portable implementation of hygienic macros and modules for Scheme. Among
other novel features, it addresses a large class of possible capture problems
that are may occur in existing hygienic procedural macro systems. It also
contains a convenient module system.

SYNTAX-CASE can be written as a macro in the system in terms of a simpler set
of primitives, and is included as a library.

Improvements since version 1.1:

- The hygiene mechanism has been improved and simplified. A binding
for an identifier can only capture a reference to another if both
were introduced together by the same SYNTAX or QUASISYNTAX form.
A rationale based on referential transparency is given that this is
the right choice.

- The documentation has been much improved.

- The mechanism for escaping ellipses is discussed.

- name changes: SYNTAX-QUOTE --> EMBEDDED-SYNTAX
MAKE-CAPTURING-IDENTIFIER --> MAKE-FLUID-IDENTIFIER
DATUM->SYNTAX --> DATUM->SYNTAX-OBJECT
SYNTAX->DATUM --> SYNTAX-OBJECT->DATUM

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