Ada Programming/Ada 2022
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This is an overview of the major features that are available in Ada 2022, the most recent version of the Ada standard.
Summary of what's new[edit | edit source]
New profile[edit | edit source]
Jorvik is a subset of the Ada tasking capabilities, similar to Ravenscar and which imposes fewer restrictions, removing the following ones compared to the Ravenscar profile:
- No_Implicit_Heap_Allocations
- No_Relative_Delay
- Simple_Barriers
- Max_Entry_Queue_Length => 1
- Max_Protected_Entries => 1
- No_Dependence => Ada.Calendar
- No_Dependence => Ada.Synchronous_Barriers
New syntax[edit | edit source]
- Assignment target name @
- Square brackets for array aggregates
- Default initial conditions for types
- Default generic parameters
- Declare expressions
- Reduction expressions
- Iteration filters
- Generalized literals
New keywords[edit | edit source]
- parallel
New pragmas[edit | edit source]
- Admission_Policy
- All_Calls_Remote
- Conflict_Check_Policy
- Elaborate_Body
- Generate_Deadlines
- Preelaborable_Initialization
- Preelaborate
- Profile now supports the Jorvik profile
- Pure
- Remote_Call_Interface
- Remote_Types
- Shared_Passive
New aspects[edit | edit source]
- Aggregate
- Allows_Exit
- Default_Initial_Condition
- Dispatching
- Elaborate_Body
- Full_Access_Only
- Global
- Global'Class
- Integer_Literal
- Iterator_View
- Max_Entry_Queue_Length
- No_Controlled_Parts
- No_Return (for functions)
- Nonblocking
- Parallel_Calls
- Parallel_Iterator
- Preelaborable_Initialization
- Put_Image
- Real_Literal
- Relative_Deadline
- Stable_Properties
- Stable_Properties'Class
- Static
- Static_Predicate
- String_Literal
- Synchronization
- Use_Formal
- Yield
New attributes[edit | edit source]
- Enum_Rep
- Enum_Val
- Index
- Object_Size
- Parallel_Reduce
- Preelaborable_Initialization
- Put_Image
- Reduce
- Relative_Deadline
New packages[edit | edit source]
- Atomic_Operations
- System.Atomic_Operations.Exchange
- System.Atomic_Operations.Test_And_Set
- System.Atomic_Operations.Integer_Arithmetic
- System.Atomic_Operations.Modular_Arithmetic
- Big Numbers
- Ada.Numerics.Big_Numbers.Big_Integers
- Ada.Numerics.Big_Numbers.Big_Reals
- Containers
- Ada.Containers.Bounded_Indefinite_Holders