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-rw-r--r--erts/emulator/beam/erl_nif.c54
-rw-r--r--erts/emulator/beam/erl_nif_api_funcs.h14
2 files changed, 62 insertions, 6 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index cee4df72a2..7095ae03e7 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -248,6 +248,16 @@ int enif_is_ref(ErlNifEnv* env, ERL_NIF_TERM term)
return is_ref(term);
}
+int enif_is_tuple(ErlNifEnv* env, ERL_NIF_TERM term)
+{
+ return is_tuple(term);
+}
+
+int enif_is_list(ErlNifEnv* env, ERL_NIF_TERM term)
+{
+ return is_list(term) || is_nil(term);
+}
+
static void aligned_binary_dtor(struct enif_tmp_obj_t* obj)
{
erts_free_aligned_binary_bytes_extra((byte*)obj,ERTS_ALC_T_TMP);
@@ -591,6 +601,15 @@ int enif_get_double(ErlNifEnv* env, Eterm term, double* dp)
return 1;
}
+int enif_get_atom_length(ErlNifEnv* env, Eterm atom, unsigned* len)
+{
+ Atom* ap;
+ if (is_not_atom(atom)) return 0;
+ ap = atom_tab(atom_val(atom));
+ *len = ap->len;
+ return 1;
+}
+
int enif_get_list_cell(ErlNifEnv* env, Eterm term, Eterm* head, Eterm* tail)
{
Eterm* val;
@@ -601,6 +620,13 @@ int enif_get_list_cell(ErlNifEnv* env, Eterm term, Eterm* head, Eterm* tail)
return 1;
}
+int enif_get_list_length(ErlNifEnv* env, Eterm term, unsigned* len)
+{
+ if (is_not_list(term) && is_not_nil(term)) return 0;
+ *len = list_length(term);
+ return 1;
+}
+
ERL_NIF_TERM enif_make_int(ErlNifEnv* env, int i)
{
#if SIZEOF_INT == ERTS_SIZEOF_ETERM
@@ -640,12 +666,23 @@ ERL_NIF_TERM enif_make_double(ErlNifEnv* env, double d)
ERL_NIF_TERM enif_make_atom(ErlNifEnv* env, const char* name)
{
- return am_atom_put(name, sys_strlen(name));
+ return enif_make_atom_len(env, name, sys_strlen(name));
+}
+
+ERL_NIF_TERM enif_make_atom_len(ErlNifEnv* env, const char* name, size_t len)
+{
+ return am_atom_put(name, len);
}
int enif_make_existing_atom(ErlNifEnv* env, const char* name, ERL_NIF_TERM* atom)
{
- return erts_atom_get(name, sys_strlen(name), atom);
+ return enif_make_existing_atom_len(env, name, sys_strlen(name), atom);
+}
+
+int enif_make_existing_atom_len(ErlNifEnv* env, const char* name, size_t len,
+ ERL_NIF_TERM* atom)
+{
+ return erts_atom_get(name, len, atom);
}
ERL_NIF_TERM enif_make_tuple(ErlNifEnv* env, unsigned cnt, ...)
@@ -724,11 +761,16 @@ ERL_NIF_TERM enif_make_list_from_array(ErlNifEnv* env, const ERL_NIF_TERM arr[],
ERL_NIF_TERM enif_make_string(ErlNifEnv* env, const char* string,
ErlNifCharEncoding encoding)
-{
- Sint n = sys_strlen(string);
- Eterm* hp = alloc_heap(env,n*2);
+{
+ return enif_make_string_len(env, string, sys_strlen(string), encoding);
+}
+
+ERL_NIF_TERM enif_make_string_len(ErlNifEnv* env, const char* string,
+ size_t len, ErlNifCharEncoding encoding)
+{
+ Eterm* hp = alloc_heap(env,len*2);
ASSERT(encoding == ERL_NIF_LATIN1);
- return erts_bld_string_n(&hp,NULL,string,n);
+ return erts_bld_string_n(&hp,NULL,string,len);
}
ERL_NIF_TERM enif_make_ref(ErlNifEnv* env)
diff --git a/erts/emulator/beam/erl_nif_api_funcs.h b/erts/emulator/beam/erl_nif_api_funcs.h
index fe8d2664e1..44bcca9ca4 100644
--- a/erts/emulator/beam/erl_nif_api_funcs.h
+++ b/erts/emulator/beam/erl_nif_api_funcs.h
@@ -106,6 +106,13 @@ ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_resource,(ErlNifEnv*, void* obj));
ERL_NIF_API_FUNC_DECL(int,enif_get_resource,(ErlNifEnv*, ERL_NIF_TERM term, ErlNifResourceType* type, void** objp));
ERL_NIF_API_FUNC_DECL(unsigned,enif_sizeof_resource,(ErlNifEnv*, void* obj));
ERL_NIF_API_FUNC_DECL(unsigned char*,enif_make_new_binary,(ErlNifEnv*,unsigned size,ERL_NIF_TERM* termp));
+ERL_NIF_API_FUNC_DECL(int,enif_is_list,(ErlNifEnv*, ERL_NIF_TERM term));
+ERL_NIF_API_FUNC_DECL(int,enif_is_tuple,(ErlNifEnv*, ERL_NIF_TERM term));
+ERL_NIF_API_FUNC_DECL(int,enif_get_atom_length,(ErlNifEnv*, ERL_NIF_TERM atom, unsigned* len));
+ERL_NIF_API_FUNC_DECL(int,enif_get_list_length,(ErlNifEnv* env, ERL_NIF_TERM term, unsigned* len));
+ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM, enif_make_atom_len,(ErlNifEnv* env, const char* name, size_t len));
+ERL_NIF_API_FUNC_DECL(int, enif_make_existing_atom_len,(ErlNifEnv* env, const char* name, size_t len, ERL_NIF_TERM* atom));
+ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_string_len,(ErlNifEnv* env, const char* string, size_t len, ErlNifCharEncoding));
/*
** Add last to keep compatibility on Windows!!!
@@ -198,6 +205,13 @@ ERL_NIF_API_FUNC_DECL(unsigned char*,enif_make_new_binary,(ErlNifEnv*,unsigned s
# define enif_get_resource ERL_NIF_API_FUNC_MACRO(enif_get_resource)
# define enif_sizeof_resource ERL_NIF_API_FUNC_MACRO(enif_sizeof_resource)
# define enif_make_new_binary ERL_NIF_API_FUNC_MACRO(enif_make_new_binary)
+# define enif_is_list ERL_NIF_API_FUNC_MACRO(enif_is_list)
+# define enif_is_tuple ERL_NIF_API_FUNC_MACRO(enif_is_tuple)
+# define enif_get_atom_length ERL_NIF_API_FUNC_MACRO(enif_get_atom_length)
+# define enif_get_list_length ERL_NIF_API_FUNC_MACRO(enif_get_list_length)
+# define enif_make_atom_len ERL_NIF_API_FUNC_MACRO(enif_make_atom_len)
+# define enif_make_existing_atom_len ERL_NIF_API_FUNC_MACRO(enif_make_existing_atom_len)
+# define enif_make_string_len ERL_NIF_API_FUNC_MACRO(enif_make_string_len)
#endif
#ifndef enif_make_list1