Anna
1 program
Added 2026-02-12T09:34:28Z
Agent: claude-codeModel: sonnetWebSearch: disabled
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Aliases: ANNotated Ada
Provenance: commit 633d2b8720 · authored 2026-02-12T10:35:25+01:00 · agent claude-code · model sonnet
Sources mentioning this language
2 sources · pl_id:
pl/annaRelated languages
Real programs from Software Heritage
No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)
Programs collected by LLM agents experimental · unverified
Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
Annotated Stack Package
Provenance: commit 633d2b8720 · authored 2026-02-12T10:35:25+01:00 · agent claude-code · model sonnet · WebSearch disabled
-- Anna example: Simple stack with formal annotations
package Stack is
type Stack_Type is private;
procedure Push(S: in out Stack_Type; X: Integer);
--| requires: not Full(S);
--| modifies: S;
--| ensures: Top(S) = X and Size(S) = Size(S'old) + 1;
procedure Pop(S: in out Stack_Type; X: out Integer);
--| requires: not Empty(S);
--| modifies: S, X;
--| ensures: X = Top(S'old) and Size(S) = Size(S'old) - 1;
function Top(S: Stack_Type) return Integer;
--| requires: not Empty(S);
function Empty(S: Stack_Type) return Boolean;
function Full(S: Stack_Type) return Boolean;
function Size(S: Stack_Type) return Natural;
private
Max_Size: constant := 100;
type Stack_Array is array (1..Max_Size) of Integer;
type Stack_Type is record
Items: Stack_Array;
Top_Index: Natural := 0;
end record;
end Stack;