erl_internal(3erl) Erlang Module Definition erl_internal(3erl)
NAME
erl_internal - Internal Erlang definitions.
DESCRIPTION
This module defines Erlang BIFs, guard tests, and operators. This mod-
ule is only of interest to programmers who manipulate Erlang code.
EXPORTS
add_predefined_functions(Forms) -> UpdatedForms
Types:
Forms = [erl_parse:abstract_form() | erl_parse:form_info()]
UpdatedForms =
[erl_parse:abstract_form() | erl_parse:form_info()]
Adds to Forms the code for the standard pre-defined functions
(such as module_info/0) that are to be included in every module.
arith_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is an arithmetic operator, other-
wise false.
bif(Name, Arity) -> boolean()
Types:
Name = atom()
Arity = arity()
Returns true if Name/Arity is an Erlang BIF that is automati-
cally recognized by the compiler, otherwise false.
bool_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a Boolean operator, otherwise
false.
comp_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a comparison operator, otherwise
false.
guard_bif(Name, Arity) -> boolean()
Types:
Name = atom()
Arity = arity()
Returns true if Name/Arity is an Erlang BIF that is allowed in
guards, otherwise false.
list_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a list operator, otherwise
false.
op_type(OpName, Arity) -> Type
Types:
OpName = atom()
Arity = arity()
Type = arith | bool | comp | list | send
Returns the Type of operator that OpName/Arity belongs to, or
generates a function_clause error if it is not an operator.
send_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a send operator, otherwise
false.
type_test(Name, Arity) -> boolean()
Types:
Name = atom()
Arity = arity()
Returns true if Name/Arity is a valid Erlang type test, other-
wise false.
Ericsson AB stdlib 3.13 erl_internal(3erl)