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define define-library and cond-expand in scheme

This commit is contained in:
Yuichi Nishiwaki 2015-06-17 00:14:12 +09:00
parent 63d3510de8
commit fa1c619633
2 changed files with 683 additions and 732 deletions
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1319
extlib/benz/boot.c
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File diff suppressed because it is too large Load Diff

96
extlib/benz/lib.c
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@ -188,70 +188,6 @@ pic_export(pic_state *pic, pic_sym *sym)
export(pic, pic_obj_value(sym));
}
static bool
condexpand(pic_state *pic, pic_value clause)
{
pic_sym *tag;
pic_value c, feature, it;
if (pic_eq_p(clause, pic_obj_value(pic->sELSE))) {
return true;
}
if (pic_sym_p(clause)) {
pic_for_each (feature, pic->features, it) {
if(pic_eq_p(feature, clause))
return true;
}
return false;
}
if (! (pic_pair_p(clause) && pic_sym_p(pic_car(pic, clause)))) {
pic_errorf(pic, "invalid 'cond-expand' clause ~s", clause);
} else {
tag = pic_sym_ptr(pic_car(pic, clause));
}
if (tag == pic->sLIBRARY) {
return pic_find_library(pic, pic_list_ref(pic, clause, 1)) != NULL;
}
if (tag == pic->sNOT) {
return ! condexpand(pic, pic_list_ref(pic, clause, 1));
}
if (tag == pic->sAND) {
pic_for_each (c, pic_cdr(pic, clause), it) {
if (! condexpand(pic, c))
return false;
}
return true;
}
if (tag == pic->sOR) {
pic_for_each (c, pic_cdr(pic, clause), it) {
if (condexpand(pic, c))
return true;
}
return false;
}
pic_errorf(pic, "unknown 'cond-expand' directive ~s", clause);
}
static pic_value
pic_lib_condexpand(pic_state *pic)
{
pic_value *clauses;
size_t argc, i;
pic_get_args(pic, "*", &argc, &clauses);
for (i = 0; i < argc; i++) {
if (condexpand(pic, pic_car(pic, clauses[i]))) {
return pic_cons(pic, pic_obj_value(pic->sBEGIN), pic_cdr(pic, clauses[i]));
}
}
return pic_undef_value();
}
static pic_value
pic_lib_import(pic_state *pic)
{
@ -282,36 +218,6 @@ pic_lib_export(pic_state *pic)
return pic_undef_value();
}
static pic_value
pic_lib_define_library(pic_state *pic)
{
struct pic_lib *lib, *prev = pic->lib;
size_t argc, i;
pic_value spec, *argv;
pic_get_args(pic, "o*", &spec, &argc, &argv);
if ((lib = pic_find_library(pic, spec)) == NULL) {
lib = pic_make_library(pic, spec);
}
pic_try {
pic->lib = lib;
for (i = 0; i < argc; ++i) {
pic_void(pic_eval(pic, argv[i], pic->lib->env));
}
pic->lib = prev;
}
pic_catch {
pic->lib = prev; /* restores pic->lib even if an error occured */
pic_raise(pic, pic->err);
}
return pic_undef_value();
}
static pic_value
pic_lib_make_library(pic_state *pic)
{
@ -403,10 +309,8 @@ pic_init_lib(pic_state *pic)
{
void pic_defmacro(pic_state *, pic_sym *, pic_sym *, pic_func_t);
pic_defmacro(pic, pic->sCOND_EXPAND, pic->uCOND_EXPAND, pic_lib_condexpand);
pic_defmacro(pic, pic->sIMPORT, pic->uIMPORT, pic_lib_import);
pic_defmacro(pic, pic->sEXPORT, pic->uEXPORT, pic_lib_export);
pic_defmacro(pic, pic->sDEFINE_LIBRARY, pic->uDEFINE_LIBRARY, pic_lib_define_library);
pic_defun(pic, "make-library", pic_lib_make_library);
pic_defun(pic, "find-library", pic_lib_find_library);