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fix for overlapping internal definition contexts

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svn: r511
This commit is contained in:
Matthew Flatt 2005-07-31 02:55:07 +00:00
parent fe7de62c4f
commit acf89713c3
1 changed files with 20 additions and 11 deletions
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31
src/mzscheme/src/stxobj.c
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@ -2203,7 +2203,7 @@ static void add_all_marks(Scheme_Object *wraps, Scheme_Hash_Table *marks)
static Scheme_Object *resolve_env(Scheme_Object *a, long phase,
int w_mod, Scheme_Object **get_names,
Scheme_Object *skip_rib)
Scheme_Object *skip_ribs)
/* Module binding ignored if w_mod is 0.
If module bound, result is module idx, and get_names[0] is set to source name,
get_names[1] is set to the nominal source module, get_names[2] is set to
@ -2411,7 +2411,9 @@ static Scheme_Object *resolve_env(Scheme_Object *a, long phase,
if (SCHEME_VOIDP(other_env)) {
noprint++;
other_env = resolve_env(renamed, 0, 0, NULL, WRAP_POS_FIRST(wraps));
other_env = resolve_env(renamed, 0, 0, NULL,
scheme_make_pair(WRAP_POS_FIRST(wraps),
skip_ribs));
--noprint;
SCHEME_VEC_ELS(rename)[2+c+ri] = other_env;
}
@ -2452,8 +2454,13 @@ static Scheme_Object *resolve_env(Scheme_Object *a, long phase,
}
} else if (SCHEME_RIBP(WRAP_POS_FIRST(wraps))) {
/* Lexical-rename rib. Splice in the names. */
Scheme_Object *srs;
rib = (Scheme_Lexical_Rib *)WRAP_POS_FIRST(wraps);
if (SAME_OBJ(skip_rib, (Scheme_Object *)rib))
for (srs = skip_ribs; SCHEME_PAIRP(srs); srs = SCHEME_CDR(srs)) {
if (SAME_OBJ(SCHEME_CAR(srs), (Scheme_Object *)rib))
break;
}
if (SCHEME_PAIRP(srs))
rib = NULL;
else if (SAME_OBJ(did_rib, rib))
rib = NULL;
@ -2570,8 +2577,8 @@ int scheme_stx_free_eq(Scheme_Object *a, Scheme_Object *b, long phase)
if ((a == asym) || (b == bsym))
return 1;
a = resolve_env(a, phase, 1, NULL, NULL);
b = resolve_env(b, phase, 1, NULL, NULL);
a = resolve_env(a, phase, 1, NULL, scheme_null);
b = resolve_env(b, phase, 1, NULL, scheme_null);
a = scheme_module_resolve(a);
b = scheme_module_resolve(b);
@ -2603,8 +2610,8 @@ int scheme_stx_module_eq(Scheme_Object *a, Scheme_Object *b, long phase)
if ((a == asym) || (b == bsym))
return 1;
a = resolve_env(a, phase, 1, NULL, NULL);
b = resolve_env(b, phase, 1, NULL, NULL);
a = resolve_env(a, phase, 1, NULL, scheme_null);
b = resolve_env(b, phase, 1, NULL, scheme_null);
a = scheme_module_resolve(a);
b = scheme_module_resolve(b);
@ -2627,7 +2634,7 @@ Scheme_Object *scheme_stx_module_name(Scheme_Object **a, long phase,
names[0] = NULL;
names[3] = scheme_make_integer(0);
modname = resolve_env(*a, phase, 1, names, NULL);
modname = resolve_env(*a, phase, 1, names, scheme_null);
if (names[0]) {
if (SAME_OBJ(names[0], scheme_undefined)) {
@ -2669,13 +2676,13 @@ int scheme_stx_env_bound_eq(Scheme_Object *a, Scheme_Object *b, Scheme_Object *u
if (!SAME_OBJ(asym, bsym))
return 0;
ae = resolve_env(a, phase, 0, NULL, NULL);
ae = resolve_env(a, phase, 0, NULL, scheme_null);
/* No need to module_resolve ae, because we ignored module renamings. */
if (uid)
be = uid;
else {
be = resolve_env(b, phase, 0, NULL, NULL);
be = resolve_env(b, phase, 0, NULL, scheme_null);
/* No need to module_resolve be, because we ignored module renamings. */
}
@ -3103,9 +3110,11 @@ static void simplify_lex_renames(Scheme_Object *wraps, Scheme_Hash_Table *lex_ca
&& !SCHEME_SYMBOLP(SCHEME_VEC_ELS(v)[2]))) {
/* This is the place to simplify: */
Scheme_Lexical_Rib *rib = NULL, *init_rib = NULL;
Scheme_Object *skip_ribs = scheme_null;
int ii, vvsize;
if (SCHEME_RIBP(v)) {
skip_ribs = scheme_make_pair(v, scheme_null);
init_rib = (Scheme_Lexical_Rib *)v;
rib = init_rib->next;
vsize = 0;
@ -3157,7 +3166,7 @@ static void simplify_lex_renames(Scheme_Object *wraps, Scheme_Hash_Table *lex_ca
other_env = SCHEME_VEC_ELS(v)[2+vvsize+ii];
if (SCHEME_VOIDP(other_env)) {
noprint++;
other_env = resolve_env(stx, 0, 0, NULL, (Scheme_Object *)init_rib);
other_env = resolve_env(stx, 0, 0, NULL, skip_ribs);
--noprint;
SCHEME_VEC_ELS(v)[2+vvsize+ii] = other_env;
}