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warning on duplicate imports

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Alex Shinn 2011-04-26 22:44:11 +09:00
parent 3fea2b7062
commit 0420bba565
1 changed files with 18 additions and 17 deletions
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35
eval.c
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@ -1771,29 +1771,27 @@ sexp sexp_make_standard_env_op (sexp ctx sexp_api_params(self, n), sexp version)
return env; return env;
} }
#if SEXP_USE_RENAME_BINDINGS
#define sexp_same_bindingp(x, y) ((x) == (y))
#else
#define sexp_same_bindingp(x, y) (sexp_env_value(x) == sexp_env_value(y))
#endif
sexp sexp_env_copy_op (sexp ctx sexp_api_params(self, n), sexp to, sexp from, sexp ls, sexp immutp) { sexp sexp_env_copy_op (sexp ctx sexp_api_params(self, n), sexp to, sexp from, sexp ls, sexp immutp) {
sexp oldname, newname; sexp oldname, newname;
sexp_gc_var1(value); sexp_gc_var2(value, oldcell);
sexp_gc_preserve1(ctx, value); sexp_gc_preserve2(ctx, value, oldcell);
if (! sexp_envp(to)) to = sexp_context_env(ctx); if (! sexp_envp(to)) to = sexp_context_env(ctx);
if (! sexp_envp(from)) from = sexp_context_env(ctx); if (! sexp_envp(from)) from = sexp_context_env(ctx);
value = sexp_make_env(ctx);
sexp_env_parent(value) = sexp_env_parent(to);
sexp_env_parent(to) = value;
sexp_immutablep(value) = sexp_truep(immutp);
if (sexp_not(ls)) { if (sexp_not(ls)) {
if (sexp_truep(immutp)) { sexp_env_bindings(value) = sexp_env_bindings(from);
value = sexp_make_env(ctx);
sexp_env_parent(value) = sexp_env_parent(to);
sexp_env_parent(to) = value;
sexp_immutablep(value) = 1;
sexp_env_bindings(value) = sexp_env_bindings(from);
sexp_env_renames(value) = sexp_env_renames(from);
} else {
for (ls=sexp_env_bindings(from); sexp_pairp(ls); ls=sexp_env_next_cell(ls)) {
#if SEXP_USE_RENAME_BINDINGS #if SEXP_USE_RENAME_BINDINGS
sexp_env_rename(ctx, to, sexp_car(ls), ls); sexp_env_renames(value) = sexp_env_renames(from);
#else
sexp_env_define(ctx, to, sexp_car(ls), sexp_cdr(ls));
#endif #endif
}
}
} else { } else {
for ( ; sexp_pairp(ls); ls=sexp_cdr(ls)) { for ( ; sexp_pairp(ls); ls=sexp_cdr(ls)) {
if (sexp_pairp(sexp_car(ls))) { if (sexp_pairp(sexp_car(ls))) {
@ -1801,6 +1799,7 @@ sexp sexp_env_copy_op (sexp ctx sexp_api_params(self, n), sexp to, sexp from, se
} else { } else {
newname = oldname = sexp_car(ls); newname = oldname = sexp_car(ls);
} }
oldcell = sexp_env_cell(to, newname, 0);
value = sexp_env_cell(from, oldname, 0); value = sexp_env_cell(from, oldname, 0);
if (value) { if (value) {
#if SEXP_USE_RENAME_BINDINGS #if SEXP_USE_RENAME_BINDINGS
@ -1809,13 +1808,15 @@ sexp sexp_env_copy_op (sexp ctx sexp_api_params(self, n), sexp to, sexp from, se
sexp_env_define(ctx, to, newname, sexp_cdr(value)); sexp_env_define(ctx, to, newname, sexp_cdr(value));
#endif #endif
#if SEXP_USE_WARN_UNDEFS #if SEXP_USE_WARN_UNDEFS
if (oldcell && !sexp_same_bindingp(oldcell, value))
sexp_warn(ctx, "importing already defined binding: ", newname);
} else { } else {
sexp_warn(ctx, "importing undefined variable: ", oldname); sexp_warn(ctx, "importing undefined variable: ", oldname);
#endif #endif
} }
} }
} }
sexp_gc_release1(ctx); sexp_gc_release2(ctx);
return SEXP_VOID; return SEXP_VOID;
} }