⟦2661d5b91⟧

E3 Source Code



with Io_Exceptions;

package Basic_Io is

    type Count is range 0 .. Integer'Last;

    subtype Positive_Count is Count range 1 .. Count'Last;

    function Get_Integer return String;

    -- Skips any leading blanks, line terminators or page
    -- terminators.  Then reads a plus or a minus sign if
    -- present, then reads according to the syntax of an
    -- integer literal, which may be based.  Stores in item
    -- a string containing an optional sign and an integer
    -- literal.
    --
    -- The exception DATA_ERROR is raised if the sequence
    -- of characters does not correspond to the syntax
    -- escribed above.
    --
    -- The exception END_ERROR is raised if the file terminator
    -- is read.  This means that the starting sequence of an
    -- integer has not been met.
    --
    -- Note that the character terminating the operation must
    -- be available for the next get operation.
    --

    function Get_Real return String;

    -- Corresponds to get_integer except that it reads according
    -- to the syntax of a real literal, which may be based.


    function Get_Enumeration return String;

    -- Corresponds to get_integer except that it reads according
    -- to the syntax of an identifier, where upper and lower
    -- case letters are equivalent to a character literal
    -- including the apostrophes.

    function Get_Item (Length : in Integer) return String;

    -- Reads a string from the current line and stores it in
    -- item.  If the remaining number of characters on the
    -- current line is less than the length then only these
    -- characters are returned.  The line terminator is not
    -- skipped.


    procedure Put_Item (Item : in String);

    -- If the length of the string is greater than the current
    -- maximum line (linelength), the exception LAYOUT_ERROR
    -- is raised.
    --
    -- If the string does not fit on the current line a line
    -- terminator is output, then the item is output.


    -- Line and page lengths - ARM 14.3.3.
    --

    procedure Set_Line_Length (To : in Count);


    procedure Set_Page_Length (To : in Count);


    function Line_Length return Count;


    function Page_Length return Count;


    -- Operations oncolumns, lines and pages - ARM 14.3.4.
    --

    procedure New_Line;


    procedure Skip_Line;


    function End_Of_Line return Boolean;


    procedure New_Page;


    procedure Skip_Page;


    function End_Of_Page return Boolean;


    function End_Of_File return Boolean;


    procedure Set_Col (To : in Positive_Count);


    procedure Set_Line (To : in Positive_Count);


    function Col return Positive_Count;


    function Line return Positive_Count;


    function Page return Positive_Count;



    -- Character and string procedures defined is ARM 14.3.6.
    --

    procedure Get_Character (Item : out Character);


    procedure Get_String (Item : out String);


    procedure Get_Line (Item : out String; Last : out Natural);


    procedure Put_Character (Item : in Character);


    procedure Put_String (Item : in String);


    procedure Put_Line (Item : in String);



    -- exceptions:

    Use_Error : exception renames Io_Exceptions.Use_Error;
    Device_Error : exception renames Io_Exceptions.Device_Error;
    End_Error : exception renames Io_Exceptions.End_Error;
    Data_Error : exception renames Io_Exceptions.Data_Error;
    Layout_Error : exception renames Io_Exceptions.Layout_Error;

end Basic_Io;
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Rational R1000/400

⟦2661d5b91⟧ Ada Source

Derivation

E3 Source Code

E3 Meta Data
