DataMuseum.dk

Presents historical artifacts from the history of:

Rational R1000/400 Tapes

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about Rational R1000/400 Tapes

Excavated with: AutoArchaeologist - Free & Open Source Software.


top - download
Index: ┃ T V

⟦3614c6da2⟧ TextFile

    Length: 873 (0x369)
    Types: TextFile
    Names: »V«

Derivation

└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
    └─ ⟦129cab021⟧ »DATA« 
        └─⟦this⟧ 

TextFile

-- This package parses and interprets the following rules
--
-- rule 0:
--  syntax:     expression  ::= value
--  semantic:   expression.result =value.result;
--
--
-- rule 1:
--  syntax:     expression ::= 'pour'identifier 'prendre' value
--  semantic:   expression.result =  identifier.result
--              identifier.inherited= value.result

with Lex;
with Object;
with Fichier_Io;
package Expression is
    type Node is private;
    Empty_Node : constant Node;

    procedure Parse (N : in out Node; Error : out Boolean);
    function Is_First (T : Lex.Token) return Boolean;
    function Interpret (N : Node;
                        Inherited : Object.Reference := Object.Void_Reference)
                       return Object.Reference;

private
    type Node_Structure;
    type Node is access Node_Structure;
    Empty_Node : constant Node := null;
end Expression;