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author | John Högberg <[email protected]> | 2019-03-06 15:28:30 +0100 |
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committer | John Högberg <[email protected]> | 2019-03-07 09:31:16 +0100 |
commit | f951b3fcc69c195ce04ae1022fa53272cb74f71b (patch) | |
tree | 781e576d1acc8882eca11c789e0eaedb47387f52 /erts/emulator/beam/erl_nif.h | |
parent | 31bff2cdb13a6e2032b7f067d037da0520752fc0 (diff) | |
download | otp-f951b3fcc69c195ce04ae1022fa53272cb74f71b.tar.gz otp-f951b3fcc69c195ce04ae1022fa53272cb74f71b.tar.bz2 otp-f951b3fcc69c195ce04ae1022fa53272cb74f71b.zip |
erts: Add enif_term_type
This helps avoid long sequences of enif_is_xxx in code that
serializes terms (such as JSON encoders) by letting the user
switch on the type.
Diffstat (limited to 'erts/emulator/beam/erl_nif.h')
-rw-r--r-- | erts/emulator/beam/erl_nif.h | 23 |
1 files changed, 22 insertions, 1 deletions
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. |