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| author | michele.simionato <devnull@localhost> | 2009-02-18 07:10:40 +0000 |
|---|---|---|
| committer | michele.simionato <devnull@localhost> | 2009-02-18 07:10:40 +0000 |
| commit | 4deb0f5e4b702f7eceb3f45ef0c8a0ad468463ed (patch) | |
| tree | 9c97225ee83bbfccc21ac90e3d5b467196458891 /scheme | |
| parent | 607990edc91614f39071c47f439aeb1d7fb30c01 (diff) | |
| download | micheles-4deb0f5e4b702f7eceb3f45ef0c8a0ad468463ed.tar.gz | |
Added a script to generate the sweet-macros package for PLT Scheme from the Ikarus source
Diffstat (limited to 'scheme')
| -rw-r--r-- | scheme/sweet-macros.sls | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/scheme/sweet-macros.sls b/scheme/sweet-macros.sls index e98439a..bc90e70 100644 --- a/scheme/sweet-macros.sls +++ b/scheme/sweet-macros.sls @@ -7,7 +7,7 @@ (export syntax-match def-syntax syntax-expand local) (import (rnrs)) -;; helper macro 1 +;;LOCAL (define-syntax local (lambda (x) (syntax-case x (syntax-match) @@ -18,8 +18,9 @@ ((local (let-form name value) (l n v) ... expr) #'(let-form ((name value)) (local (l n v) ... expr)))) )) +;;END -;; helper macro 2 +;;GUARDED-SYNTAX-CASE (define-syntax guarded-syntax-case (let ((add-clause (lambda (clause acc) @@ -45,7 +46,9 @@ (((c ...) (fold-right add-clause '() #'(clause ...)))) #'(syntax-case y (literal ...) c ...))) )))) +;;END +;;SYNTAX-MATCH (define-syntax syntax-match (guarded-syntax-case () (sub local) ((self (local (let-form name value) ...) (literal ...) @@ -74,7 +77,9 @@ ((self x (literal ...) (sub patt skel . rest) ...) #'(guarded-syntax-case x (literal ...) (patt skel . rest) ...)) )) +;;END +;; DEF-SYNTAX (define-syntax def-syntax (syntax-match (extends local) (sub (def-syntax name (extends parent) @@ -89,9 +94,12 @@ (sub (def-syntax name transformer) #'(define-syntax name transformer)) )) +;;END +;;SYNTAX-EXPAND (def-syntax (syntax-expand (macro . args)) #'(syntax->datum ((macro <transformer>) #'(... (... (macro . args)))))) +;;END ) ;;; LEGALESE |