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Justin Ethier 2021-08-23 13:36:13 -04:00
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docs/User-Manual.md
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@ -168,7 +168,7 @@ A [R<sup>7</sup>RS Compliance Chart](Scheme-Language-Compliance.md) lists differ
Cyclone provides two macro systems.
High-level hygienic macros may be created using `syntax-rules`. This system is based on a template language specified by R<sup>7</sup>RS. The specification goes into more detail on how to work with these macros.
High-level hygienic macros may be created using `syntax-rules`. This system is based on a template language specified by R<sup>7</sup>RS. The specification goes into more detail on how to work with these macros:
(define-syntax when
(syntax-rules ()
@ -176,7 +176,7 @@ High-level hygienic macros may be created using `syntax-rules`. This system is b
(if test
(begin result1 result2 ...)))))
Alternatively a low-level explicit renaming (ER) macros system is also provided that allows defining macros using Scheme code, in a similar manner as `defmacro`. This macro system provides the convenience functions `(rename identifier)` to hygienically rename an identifier and `(compare identifier1 identifier2)` to compare two identifiers.
Alternatively a low-level explicit renaming (ER) macros system is also provided that allows defining macros using Scheme code, in a similar manner as `defmacro`. This macro system provides the convenience functions `(rename identifier)` to hygienically rename an identifier and `(compare identifier1 identifier2)` to compare two identifiers:
(define-syntax when
(er-macro-transformer
@ -194,7 +194,7 @@ Alternatively a low-level explicit renaming (ER) macros system is also provided
cyclone> (expand '(when #t (+ 1 2 3)) *global-environment* '())
(if #t ((lambda () (+ 1 2 3))) )
- Alternatively when developing an ER macro, since its just a Scheme function, the macro can be defined as a `lambda` and passed a quoted expression to debug.
- Alternatively when developing an ER macro, since its just a Scheme function, the macro can be defined as a `lambda` and passed a quoted expression to debug:
(pretty-print
((lambda (exp rename compare)