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fix brainfuck for new tree-il, and add tests

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* test-suite/Makefile.am:
* test-suite/tests/brainfuck.test: Add a brainfuck test.

* module/system/base/compile.scm: Also export read-and-compile.

* module/language/tree-il/spec.scm (join): Fix the joiner in the
  0-expression case.

* module/language/tree-il/primitives.scm (+): Recognize (+ x -1) as 1-.

* module/language/brainfuck/parse.scm (read-brainfuck): Return EOF if we
  actually received EOF, and there were no expressions read.

* module/language/brainfuck/compile-tree-il.scm (compile-body): Fix the
  compiler for the new format of "lambda" in tree-il.
This commit is contained in:
Andy Wingo 2009-10-16 17:56:39 +02:00
parent 8a4ca0ea3b
commit 8753fd537c
7 changed files with 91 additions and 18 deletions
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13
module/language/brainfuck/parse.scm
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@ -66,9 +66,16 @@
(define (read-brainfuck p)
(let iterate ((parsed '()))
(let ((chr (read-char p)))
(if (or (eof-object? chr) (eq? #\] chr))
(reverse-without-nops parsed)
(iterate (cons (process-input-char chr p) parsed))))))
(cond
((eof-object? chr)
(let ((parsed (reverse-without-nops parsed)))
(if (null? parsed)
chr ;; pass on the EOF object
parsed)))
((eqv? chr #\])
(reverse-without-nops parsed))
(else
(iterate (cons (process-input-char chr p) parsed)))))))
; This routine processes a single character of input and builds the