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Fix decompilation of the `load-array' instruction.

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This allows, e.g., ",c #u8(1 2 3)" at the REPL to actually work instead
of failing to decode `load-array'.

* module/language/assembly/decompile-bytecode.scm (decode-bytecode):
  Account for the `load-array' instruction, which is followed by a
  bytevector instead of a string.  We should find a more elegant way to
  do that.
This commit is contained in:
Ludovic Courtès 2009-06-19 02:35:57 +02:00
parent 81e002fcb9
commit 159399850d
1 changed files with 15 additions and 4 deletions
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19
module/language/assembly/decompile-bytecode.scm
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@ -22,6 +22,7 @@
#:use-module (system vm instruction)
#:use-module (system base pmatch)
#:use-module (srfi srfi-4)
#:use-module (rnrs bytevector)
#:use-module (language assembly)
#:export (decompile-bytecode))
@ -97,14 +98,24 @@
((eq? inst 'load-program)
(decode-load-program pop))
((< (instruction-length inst) 0)
(let* ((len (let* ((a (pop)) (b (pop)) (c (pop)))
(let* ((make-sequence
(if (eq? inst 'load-array)
make-bytevector
make-string))
(sequence-set!
(if (eq? inst 'load-array)
bytevector-u8-set!
(lambda (str pos value)
(string-set! str pos (integer->char value)))))
(len (let* ((a (pop)) (b (pop)) (c (pop)))
(+ (ash a 16) (ash b 8) c)))
(str (make-string len)))
(seq (make-sequence len)))
(let lp ((i 0))
(if (= i len)
`(,inst ,str)
`(,inst ,seq)
(begin
(string-set! str i (integer->char (pop)))
(sequence-set! seq i (pop))
(lp (1+ i)))))))
(else
;; fixed length