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simpler #%linklet bootstrap hook

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This commit is contained in:
Matthew Flatt 2016-06-25 14:59:46 -06:00
parent 431110531b
commit b9445023c1
1 changed files with 43 additions and 39 deletions
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76
racket/src/racket/src/module.c
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@ -950,9 +950,7 @@ static Scheme_Module *registry_get_loaded(Scheme_Env *env, Scheme_Object *name)
/* A minimal linklet API to support bootstrapping. */
static Scheme_Object *get_primitive_instance(int argc, Scheme_Object *argv[]);
static Scheme_Object *instance_variable_value(int argc, Scheme_Object *argv[]);
static Scheme_Object *instance_set_variable_value(int argc, Scheme_Object *argv[]);
static Scheme_Object *primitive_table(int argc, Scheme_Object *argv[]);
void scheme_init_linklet(Scheme_Env *env)
{
@ -962,21 +960,22 @@ void scheme_init_linklet(Scheme_Env *env)
modname = scheme_intern_symbol("#%linklet");
newenv = scheme_primitive_module(modname, env);
GLOBAL_PRIM_W_ARITY("get-primitive-instance", get_primitive_instance, 1, 2, newenv);
GLOBAL_PRIM_W_ARITY("instance-variable-value", instance_variable_value, 2, 2, newenv);
GLOBAL_PRIM_W_ARITY("instance-set-variable-value!", instance_set_variable_value, 3, 3, newenv);
GLOBAL_PRIM_W_ARITY("primitive-table", primitive_table, 1, 2, newenv);
scheme_finish_primitive_module(newenv);
scheme_protect_primitive_provide(newenv, NULL);
}
static Scheme_Object *get_primitive_instance(int argc, Scheme_Object *argv[])
static Scheme_Object *primitive_table(int argc, Scheme_Object *argv[])
{
Scheme_Env *env, *menv;
Scheme_Object *name;
Scheme_Hash_Tree *ht;
if (!SCHEME_SYMBOLP(argv[0]))
scheme_wrong_contract("get-primitive-instance", "symbol?", 0, argc, argv);
scheme_wrong_contract("primitive-table", "symbol?", 0, argc, argv);
if ((argc > 1) && !SCHEME_HASHTRP(argv[1]))
scheme_wrong_contract("primitive-table", "(and/c hash? immutable?)", 1, argc, argv);
name = scheme_intern_resolved_module_path(argv[0]);
@ -984,42 +983,47 @@ static Scheme_Object *get_primitive_instance(int argc, Scheme_Object *argv[])
menv = get_special_modenv(name);
if (!menv)
menv = (Scheme_Env *)scheme_hash_get(MODCHAIN_TABLE(env->modchain), name);
if (!menv && (argc > 1) && SCHEME_TRUEP(argv[1])) {
if (!menv) {
if (argc > 1) {
Scheme_Object *k, *v;
mzlonglong pos;
menv = scheme_primitive_module(argv[0], env);
ht = (Scheme_Hash_Tree *)argv[1];
pos = scheme_hash_tree_next(ht, -1);
while (pos != -1) {
scheme_hash_tree_index(ht, pos, &k, &v);
if (SCHEME_SYMBOLP(k)) {
scheme_add_global_symbol(k, v, menv);
}
pos = scheme_hash_tree_next(ht, pos);
}
scheme_finish_primitive_module(menv);
start_module(menv->module, env, 0, name, 0, 1, 0, scheme_null, 0);
} else
return scheme_false;
}
return (menv ? (Scheme_Object *)menv : scheme_false);
if (argc < 2) {
Scheme_Bucket **bs, *b;
intptr_t i;
ht = scheme_make_hash_tree(0);
bs = menv->toplevel->buckets;
for (i = menv->toplevel->size; i--; ) {
b = bs[i];
if (b && b->val) {
ht = scheme_hash_tree_set(ht, (Scheme_Object *)b->key, b->val);
}
}
static Scheme_Object *instance_variable_value(int argc, Scheme_Object *argv[])
{
Scheme_Object *v;
if (!SCHEME_NAMESPACEP(argv[0]))
scheme_wrong_contract("instance-variable-value", "namespace?", 0, argc, argv);
if (!SCHEME_SYMBOLP(argv[1]))
scheme_wrong_contract("instance-variable-value", "symbol?", 1, argc, argv);
v = scheme_lookup_global(argv[1], (Scheme_Env *)argv[0]);
return (v ? v : scheme_false);
}
static Scheme_Object *instance_set_variable_value(int argc, Scheme_Object *argv[])
{
Scheme_Bucket *bucket;
if (!SCHEME_NAMESPACEP(argv[0]))
scheme_wrong_contract("instance-set-variable-value!", "namespace?", 0, argc, argv);
if (!SCHEME_SYMBOLP(argv[1]))
scheme_wrong_contract("instance-set-variable-value!", "symbol?", 1, argc, argv);
bucket = scheme_global_bucket(argv[1], (Scheme_Env *)argv[0]);
scheme_set_global_bucket("instance-set-variable-value!", bucket, argv[2], 1);
return (Scheme_Object *)ht;
} else
return scheme_void;
}