75 lines
2.2 KiB
Scheme
75 lines
2.2 KiB
Scheme
;;;; fmt-js.scm -- javascript formatting utilities
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;;
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;; Copyright (c) 2011-2012 Alex Shinn. All rights reserved.
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;; BSD-style license: http://synthcode.com/license.txt
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (js-expr x)
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(fmt-let 'gen js-expr/sexp
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(lambda (st) (((or (fmt-gen st) js-expr/sexp) x) st))))
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(define (js-expr/sexp x)
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(cond
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((procedure? x)
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x)
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((pair? x)
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(case (car x)
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((%fun function) (apply js-function (cdr x)))
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((%var var) (apply js-var (cdr x)))
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((eq? ===) (apply js=== (cdr x)))
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((>>>) (apply js>>> (cdr x)))
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((%array) (js-array x))
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((%object) (js-object (cdr x)))
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((%comment) (js-comment x))
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(else (c-expr/sexp x))))
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((vector? x) (js-array x))
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((boolean? x) (cat (if x "true" "false")))
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((char? x) (js-expr/sexp (string x)))
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(else (c-expr/sexp x))))
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(define (js-function . x)
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(let* ((name (and (symbol? (car x)) (car x)))
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(params (if name (cadr x) (car x)))
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(body (if name (cddr x) (cdr x))))
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(c-block
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(cat "function " (dsp (or name "")) "("
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(fmt-join dsp params ", ") ")")
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(fmt-let 'return? #t (c-in-stmt (apply c-begin body))))))
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(define (js-var . args)
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(apply c-var 'var args))
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(define (js=== . args)
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(apply c-op "===" args))
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(define (js>>> . args)
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(apply c-op ">>>" args))
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(define (js-comment . args)
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(columnar "// " (apply-cat args)))
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(define (js-array x)
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(let ((ls (vector->list x)))
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(c-wrap-stmt
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(fmt-try-fit
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(fmt-let 'no-wrap? #t (cat "[" (fmt-join js-expr ls ", ") "]"))
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(lambda (st)
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(let* ((col (fmt-col st))
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(sep (string-append "," (make-nl-space col))))
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((cat "[" (fmt-join js-expr ls sep) "]" nl) st)))))))
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(define (js-pair x)
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(cat (js-expr (car x)) ": " (js-expr (cdr x))))
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(define (js-object ls)
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(c-in-expr
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(fmt-try-fit
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(fmt-let 'no-wrap? #t (cat "{" (fmt-join js-pair ls ", ") "}"))
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(lambda (st)
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(let* ((col (fmt-col st))
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(sep (string-append "," (make-nl-space col))))
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((cat "{" (fmt-join js-pair ls sep) "}" nl) st))))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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