Small Footprint Scheme for use as a C Extension Language
Small Footprint Scheme for use as a C Extension Language
Questions tagged [chibi-scheme]
8 questions
7
votes
2 answers
Chibi Scheme - Simple define-library example not working
I wrote the following example, in an attempt to experiment with R7RS libraries in Chibi Scheme 0.5.3:
(define-library (example hello)
(export hello-world)
(import (scheme base))
(begin
(define (hello-world) "hello, world")))…
Justin Ethier
- 131,333
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3
votes
1 answer
Does a syntax-rules expression by itself evaluate to a value in Scheme?
In Chibi and CHICKEN, the following syntax-rules expression evaluates to a procedure:
(syntax-rules () ((_) #f))
Is this just an artifact of how these particular implementations are written? The Scheme language specs do not seem to call out…
Justin Ethier
- 131,333
- 52
- 229
- 284
2
votes
2 answers
Scheme: Passing defines inside macro definition to submacro?
Consider the following macro definition in R7RS scheme:
(define-syntax foo
(syntax-rules ()
((_ bar)
(begin
(define baz 42)
(define-syntax bar
(syntax-rules ()
((_) baz)))))))
I have loaded this…
Marc
- 4,327
- 4
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1
vote
1 answer
Scheme: list all bindings in scope
In R7RS or chibi-scheme, is there a function I can call to get a list of symbols containing all bindings in the current scope?
As a comparison, in Python, I can use functions globals() and locals() to see what names are available in the current…
math4tots
- 8,540
- 14
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- 95
1
vote
1 answer
Chibi-scheme Error with Iterator
Anyone got any idea why chibi-scheme throws the error below while attempting to use the
chibi-loop up-from function:
ERROR: car: not a pair: #
ERROR in set-dk! on line 590 of file /usr/local/share/chibi/init-7.scm: cdr: not a pair:…
cobie
- 7,023
- 11
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- 60
0
votes
1 answer
Out of bounds index returns correct values from vector created in chibi scheme
I've embedded chibi scheme into my C++ application and am trying to create a float vector with a size of 3 in scheme, and then get the individual values of that vector back into my c++ program, however when I attempt to do so I only get the correct…
0x003
- 65
- 9
0
votes
1 answer
chibi-scheme embedded: calling scheme function with multiple params from C
The following site shows an sample of embedding chibi scheme into a c program:
http://synthcode.com/scheme/chibi/
/* construct a Scheme expression to eval */
obj1 = sexp_intern(ctx, "my-procedure", -1);
obj2 = sexp_cons(ctx, obj1,…
Dess
- 2,064
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- 35
0
votes
1 answer
Get struct* from out parameter in Chibi Scheme FFI bindings
Can you get a struct * from the out parameter of a C function in Chibi Scheme?
I'm trying to get a struct archive_entry * from this C function:
int archive_read_next_header(
struct archive *archive,
struct archive_entry **out_entry);
In C…
Lassi
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