diff options
Diffstat (limited to 'libguile/memoize.c')
-rw-r--r-- | libguile/memoize.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/libguile/memoize.c b/libguile/memoize.c index 584096fbd..dfbeea781 100644 --- a/libguile/memoize.c +++ b/libguile/memoize.c @@ -269,14 +269,33 @@ memoize (SCM exp, SCM env) return MAKMEMO_BEGIN (memoize_exps (REF (exp, SEQUENCE, EXPS), env)); case SCM_EXPANDED_LAMBDA: - /* The body will be a lambda-case. */ + /* The body will be a lambda-case or #f. */ { - SCM meta, docstring, proc; + SCM meta, docstring, body, proc; meta = REF (exp, LAMBDA, META); docstring = scm_assoc_ref (meta, scm_sym_documentation); - proc = memoize (REF (exp, LAMBDA, BODY), env); + body = REF (exp, LAMBDA, BODY); + if (scm_is_false (body)) + /* Give a body to case-lambda with no clauses. */ + proc = MAKMEMO_LAMBDA + (MAKMEMO_CALL + (MAKMEMO_MOD_REF (list_of_guile, + scm_from_latin1_symbol ("throw"), + SCM_BOOL_F), + 5, + scm_list_5 (MAKMEMO_QUOTE (scm_args_number_key), + MAKMEMO_QUOTE (SCM_BOOL_F), + MAKMEMO_QUOTE (scm_from_latin1_string + ("Wrong number of arguments")), + MAKMEMO_QUOTE (SCM_EOL), + MAKMEMO_QUOTE (SCM_BOOL_F))), + FIXED_ARITY (0), + SCM_BOOL_F /* docstring */); + else + proc = memoize (body, env); + if (scm_is_string (docstring)) { SCM args = SCM_MEMOIZED_ARGS (proc); |