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author | John Högberg <[email protected]> | 2019-03-08 14:41:44 +0100 |
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committer | GitHub <[email protected]> | 2019-03-08 14:41:44 +0100 |
commit | f39d734ed638a7e431993c05b143d2cc5bef1690 (patch) | |
tree | bbe15b39031de4bc88874294b5a789f37c1fb942 /erts/emulator/beam | |
parent | 9c019dfdf038768e5f7f4f2dadc0312421986f2c (diff) | |
parent | f951b3fcc69c195ce04ae1022fa53272cb74f71b (diff) | |
download | otp-f39d734ed638a7e431993c05b143d2cc5bef1690.tar.gz otp-f39d734ed638a7e431993c05b143d2cc5bef1690.tar.bz2 otp-f39d734ed638a7e431993c05b143d2cc5bef1690.zip |
Merge pull request #2175 from jhogberg/john/erts/enif_term_type/OTP-15640
erts: Add enif_term_type
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r-- | erts/emulator/beam/erl_nif.c | 41 | ||||
-rw-r--r-- | erts/emulator/beam/erl_nif.h | 23 | ||||
-rw-r--r-- | erts/emulator/beam/erl_nif_api_funcs.h | 3 |
3 files changed, 66 insertions, 1 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index 5a3cdf980d..af1acbfc90 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -1175,6 +1175,47 @@ int enif_is_number(ErlNifEnv* env, ERL_NIF_TERM term) return is_number(term); } +ErlNifTermType enif_term_type(ErlNifEnv* env, ERL_NIF_TERM term) { + (void)env; + + switch (tag_val_def(term)) { + case ATOM_DEF: + return ERL_NIF_TERM_TYPE_ATOM; + case BINARY_DEF: + return ERL_NIF_TERM_TYPE_BITSTRING; + case FLOAT_DEF: + return ERL_NIF_TERM_TYPE_FLOAT; + case EXPORT_DEF: + case FUN_DEF: + return ERL_NIF_TERM_TYPE_FUN; + case BIG_DEF: + case SMALL_DEF: + return ERL_NIF_TERM_TYPE_INTEGER; + case LIST_DEF: + case NIL_DEF: + return ERL_NIF_TERM_TYPE_LIST; + case MAP_DEF: + return ERL_NIF_TERM_TYPE_MAP; + case EXTERNAL_PID_DEF: + case PID_DEF: + return ERL_NIF_TERM_TYPE_PID; + case EXTERNAL_PORT_DEF: + case PORT_DEF: + return ERL_NIF_TERM_TYPE_PORT; + case EXTERNAL_REF_DEF: + case REF_DEF: + return ERL_NIF_TERM_TYPE_REFERENCE; + case TUPLE_DEF: + return ERL_NIF_TERM_TYPE_TUPLE; + default: + /* tag_val_def() aborts on its own when passed complete garbage, but + * it's possible that the user has given us garbage that just happens + * to match something that tag_val_def() accepts but we don't, like + * binary match contexts. */ + ERTS_INTERNAL_ERROR("Invalid term passed to enif_term_type"); + } +} + static void aligned_binary_dtor(struct enif_tmp_obj_t* obj) { erts_free_aligned_binary_bytes_extra((byte*)obj, obj->allocator); diff --git a/erts/emulator/beam/erl_nif.h b/erts/emulator/beam/erl_nif.h index 3fd1a8fd4c..a599511c78 100644 --- a/erts/emulator/beam/erl_nif.h +++ b/erts/emulator/beam/erl_nif.h @@ -55,6 +55,7 @@ ** 2.14: 21.0 add enif_ioq_peek_head, enif_(mutex|cond|rwlock|thread)_name ** enif_vfprintf, enif_vsnprintf, enif_make_map_from_arrays ** 2.15: 22.0 ERL_NIF_SELECT_CANCEL, enif_select_(read|write) +** enif_term_type */ #define ERL_NIF_MAJOR_VERSION 2 #define ERL_NIF_MINOR_VERSION 15 @@ -63,7 +64,7 @@ * with ticket syntax like "erts-@OTP-12345@", or a temporary placeholder * between two @ like "erts-@MyName@", if you don't know what a ticket is. */ -#define ERL_NIF_MIN_ERTS_VERSION "erts-@OTP-15095@ (OTP-22)" +#define ERL_NIF_MIN_ERTS_VERSION "erts-@OTP-15095 OTP-15640@ (OTP-22)" /* * The emulator will refuse to load a nif-lib with a major version @@ -282,6 +283,26 @@ typedef enum { ERL_NIF_IOQ_NORMAL = 1 } ErlNifIOQueueOpts; +typedef enum { + ERL_NIF_TERM_TYPE_ATOM = 1, + ERL_NIF_TERM_TYPE_BITSTRING = 2, + ERL_NIF_TERM_TYPE_FLOAT = 3, + ERL_NIF_TERM_TYPE_FUN = 4, + ERL_NIF_TERM_TYPE_INTEGER = 5, + ERL_NIF_TERM_TYPE_LIST = 6, + ERL_NIF_TERM_TYPE_MAP = 7, + ERL_NIF_TERM_TYPE_PID = 8, + ERL_NIF_TERM_TYPE_PORT = 9, + ERL_NIF_TERM_TYPE_REFERENCE = 10, + ERL_NIF_TERM_TYPE_TUPLE = 11, + + /* This is a dummy value intended to coax the compiler into warning about + * unhandled values in a switch even if all the above values have been + * handled. We can add new entries at any time so the user must always + * have a default case. */ + ERL_NIF_TERM_TYPE__MISSING_DEFAULT_CASE__READ_THE_MANUAL = -1 +} ErlNifTermType; + /* * Return values from enif_thread_type(). Negative values * reserved for specific types of non-scheduler threads. diff --git a/erts/emulator/beam/erl_nif_api_funcs.h b/erts/emulator/beam/erl_nif_api_funcs.h index 8ab454c8dd..d57f6ec97c 100644 --- a/erts/emulator/beam/erl_nif_api_funcs.h +++ b/erts/emulator/beam/erl_nif_api_funcs.h @@ -215,6 +215,8 @@ ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_monitor_term,(ErlNifEnv* env, const ERL_NIF_API_FUNC_DECL(void,enif_set_pid_undefined,(ErlNifPid* pid)); ERL_NIF_API_FUNC_DECL(int,enif_is_pid_undefined,(const ErlNifPid* pid)); +ERL_NIF_API_FUNC_DECL(ErlNifTermType,enif_term_type,(ErlNifEnv* env, ERL_NIF_TERM term)); + /* ** ADD NEW ENTRIES HERE (before this comment) !!! */ @@ -401,6 +403,7 @@ ERL_NIF_API_FUNC_DECL(int,enif_is_pid_undefined,(const ErlNifPid* pid)); # define enif_make_monitor_term ERL_NIF_API_FUNC_MACRO(enif_make_monitor_term) # define enif_set_pid_undefined ERL_NIF_API_FUNC_MACRO(enif_set_pid_undefined) # define enif_is_pid_undefined ERL_NIF_API_FUNC_MACRO(enif_is_pid_undefined) +# define enif_term_type ERL_NIF_API_FUNC_MACRO(enif_term_type) /* ** ADD NEW ENTRIES HERE (before this comment) |