| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- I N T E R F A C E S . C O B O L -- |
| -- -- |
| -- S p e c -- |
| -- (ASCII Version) -- |
| -- -- |
| -- Copyright (C) 1993-2009, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This version of the COBOL interfaces package assumes that the COBOL |
| -- compiler uses ASCII as its internal representation of characters, i.e. |
| -- that the type COBOL_Character has the same representation as the Ada |
| -- type Standard.Character. |
| |
| package Interfaces.COBOL is |
| pragma Preelaborate (COBOL); |
| |
| ------------------------------------------------------------ |
| -- Types And Operations For Internal Data Representations -- |
| ------------------------------------------------------------ |
| |
| type Floating is new Float; |
| type Long_Floating is new Long_Float; |
| |
| type Binary is new Integer; |
| type Long_Binary is new Long_Long_Integer; |
| |
| Max_Digits_Binary : constant := 9; |
| Max_Digits_Long_Binary : constant := 18; |
| |
| type Decimal_Element is mod 2**4; |
| type Packed_Decimal is array (Positive range <>) of Decimal_Element; |
| pragma Pack (Packed_Decimal); |
| |
| type COBOL_Character is new Character; |
| |
| Ada_To_COBOL : array (Standard.Character) of COBOL_Character := ( |
| COBOL_Character'Val (000), COBOL_Character'Val (001), |
| COBOL_Character'Val (002), COBOL_Character'Val (003), |
| COBOL_Character'Val (004), COBOL_Character'Val (005), |
| COBOL_Character'Val (006), COBOL_Character'Val (007), |
| COBOL_Character'Val (008), COBOL_Character'Val (009), |
| COBOL_Character'Val (010), COBOL_Character'Val (011), |
| COBOL_Character'Val (012), COBOL_Character'Val (013), |
| COBOL_Character'Val (014), COBOL_Character'Val (015), |
| COBOL_Character'Val (016), COBOL_Character'Val (017), |
| COBOL_Character'Val (018), COBOL_Character'Val (019), |
| COBOL_Character'Val (020), COBOL_Character'Val (021), |
| COBOL_Character'Val (022), COBOL_Character'Val (023), |
| COBOL_Character'Val (024), COBOL_Character'Val (025), |
| COBOL_Character'Val (026), COBOL_Character'Val (027), |
| COBOL_Character'Val (028), COBOL_Character'Val (029), |
| COBOL_Character'Val (030), COBOL_Character'Val (031), |
| COBOL_Character'Val (032), COBOL_Character'Val (033), |
| COBOL_Character'Val (034), COBOL_Character'Val (035), |
| COBOL_Character'Val (036), COBOL_Character'Val (037), |
| COBOL_Character'Val (038), COBOL_Character'Val (039), |
| COBOL_Character'Val (040), COBOL_Character'Val (041), |
| COBOL_Character'Val (042), COBOL_Character'Val (043), |
| COBOL_Character'Val (044), COBOL_Character'Val (045), |
| COBOL_Character'Val (046), COBOL_Character'Val (047), |
| COBOL_Character'Val (048), COBOL_Character'Val (049), |
| COBOL_Character'Val (050), COBOL_Character'Val (051), |
| COBOL_Character'Val (052), COBOL_Character'Val (053), |
| COBOL_Character'Val (054), COBOL_Character'Val (055), |
| COBOL_Character'Val (056), COBOL_Character'Val (057), |
| COBOL_Character'Val (058), COBOL_Character'Val (059), |
| COBOL_Character'Val (060), COBOL_Character'Val (061), |
| COBOL_Character'Val (062), COBOL_Character'Val (063), |
| COBOL_Character'Val (064), COBOL_Character'Val (065), |
| COBOL_Character'Val (066), COBOL_Character'Val (067), |
| COBOL_Character'Val (068), COBOL_Character'Val (069), |
| COBOL_Character'Val (070), COBOL_Character'Val (071), |
| COBOL_Character'Val (072), COBOL_Character'Val (073), |
| COBOL_Character'Val (074), COBOL_Character'Val (075), |
| COBOL_Character'Val (076), COBOL_Character'Val (077), |
| COBOL_Character'Val (078), COBOL_Character'Val (079), |
| COBOL_Character'Val (080), COBOL_Character'Val (081), |
| COBOL_Character'Val (082), COBOL_Character'Val (083), |
| COBOL_Character'Val (084), COBOL_Character'Val (085), |
| COBOL_Character'Val (086), COBOL_Character'Val (087), |
| COBOL_Character'Val (088), COBOL_Character'Val (089), |
| COBOL_Character'Val (090), COBOL_Character'Val (091), |
| COBOL_Character'Val (092), COBOL_Character'Val (093), |
| COBOL_Character'Val (094), COBOL_Character'Val (095), |
| COBOL_Character'Val (096), COBOL_Character'Val (097), |
| COBOL_Character'Val (098), COBOL_Character'Val (099), |
| COBOL_Character'Val (100), COBOL_Character'Val (101), |
| COBOL_Character'Val (102), COBOL_Character'Val (103), |
| COBOL_Character'Val (104), COBOL_Character'Val (105), |
| COBOL_Character'Val (106), COBOL_Character'Val (107), |
| COBOL_Character'Val (108), COBOL_Character'Val (109), |
| COBOL_Character'Val (110), COBOL_Character'Val (111), |
| COBOL_Character'Val (112), COBOL_Character'Val (113), |
| COBOL_Character'Val (114), COBOL_Character'Val (115), |
| COBOL_Character'Val (116), COBOL_Character'Val (117), |
| COBOL_Character'Val (118), COBOL_Character'Val (119), |
| COBOL_Character'Val (120), COBOL_Character'Val (121), |
| COBOL_Character'Val (122), COBOL_Character'Val (123), |
| COBOL_Character'Val (124), COBOL_Character'Val (125), |
| COBOL_Character'Val (126), COBOL_Character'Val (127), |
| COBOL_Character'Val (128), COBOL_Character'Val (129), |
| COBOL_Character'Val (130), COBOL_Character'Val (131), |
| COBOL_Character'Val (132), COBOL_Character'Val (133), |
| COBOL_Character'Val (134), COBOL_Character'Val (135), |
| COBOL_Character'Val (136), COBOL_Character'Val (137), |
| COBOL_Character'Val (138), COBOL_Character'Val (139), |
| COBOL_Character'Val (140), COBOL_Character'Val (141), |
| COBOL_Character'Val (142), COBOL_Character'Val (143), |
| COBOL_Character'Val (144), COBOL_Character'Val (145), |
| COBOL_Character'Val (146), COBOL_Character'Val (147), |
| COBOL_Character'Val (148), COBOL_Character'Val (149), |
| COBOL_Character'Val (150), COBOL_Character'Val (151), |
| COBOL_Character'Val (152), COBOL_Character'Val (153), |
| COBOL_Character'Val (154), COBOL_Character'Val (155), |
| COBOL_Character'Val (156), COBOL_Character'Val (157), |
| COBOL_Character'Val (158), COBOL_Character'Val (159), |
| COBOL_Character'Val (160), COBOL_Character'Val (161), |
| COBOL_Character'Val (162), COBOL_Character'Val (163), |
| COBOL_Character'Val (164), COBOL_Character'Val (165), |
| COBOL_Character'Val (166), COBOL_Character'Val (167), |
| COBOL_Character'Val (168), COBOL_Character'Val (169), |
| COBOL_Character'Val (170), COBOL_Character'Val (171), |
| COBOL_Character'Val (172), COBOL_Character'Val (173), |
| COBOL_Character'Val (174), COBOL_Character'Val (175), |
| COBOL_Character'Val (176), COBOL_Character'Val (177), |
| COBOL_Character'Val (178), COBOL_Character'Val (179), |
| COBOL_Character'Val (180), COBOL_Character'Val (181), |
| COBOL_Character'Val (182), COBOL_Character'Val (183), |
| COBOL_Character'Val (184), COBOL_Character'Val (185), |
| COBOL_Character'Val (186), COBOL_Character'Val (187), |
| COBOL_Character'Val (188), COBOL_Character'Val (189), |
| COBOL_Character'Val (190), COBOL_Character'Val (191), |
| COBOL_Character'Val (192), COBOL_Character'Val (193), |
| COBOL_Character'Val (194), COBOL_Character'Val (195), |
| COBOL_Character'Val (196), COBOL_Character'Val (197), |
| COBOL_Character'Val (198), COBOL_Character'Val (199), |
| COBOL_Character'Val (200), COBOL_Character'Val (201), |
| COBOL_Character'Val (202), COBOL_Character'Val (203), |
| COBOL_Character'Val (204), COBOL_Character'Val (205), |
| COBOL_Character'Val (206), COBOL_Character'Val (207), |
| COBOL_Character'Val (208), COBOL_Character'Val (209), |
| COBOL_Character'Val (210), COBOL_Character'Val (211), |
| COBOL_Character'Val (212), COBOL_Character'Val (213), |
| COBOL_Character'Val (214), COBOL_Character'Val (215), |
| COBOL_Character'Val (216), COBOL_Character'Val (217), |
| COBOL_Character'Val (218), COBOL_Character'Val (219), |
| COBOL_Character'Val (220), COBOL_Character'Val (221), |
| COBOL_Character'Val (222), COBOL_Character'Val (223), |
| COBOL_Character'Val (224), COBOL_Character'Val (225), |
| COBOL_Character'Val (226), COBOL_Character'Val (227), |
| COBOL_Character'Val (228), COBOL_Character'Val (229), |
| COBOL_Character'Val (230), COBOL_Character'Val (231), |
| COBOL_Character'Val (232), COBOL_Character'Val (233), |
| COBOL_Character'Val (234), COBOL_Character'Val (235), |
| COBOL_Character'Val (236), COBOL_Character'Val (237), |
| COBOL_Character'Val (238), COBOL_Character'Val (239), |
| COBOL_Character'Val (240), COBOL_Character'Val (241), |
| COBOL_Character'Val (242), COBOL_Character'Val (243), |
| COBOL_Character'Val (244), COBOL_Character'Val (245), |
| COBOL_Character'Val (246), COBOL_Character'Val (247), |
| COBOL_Character'Val (248), COBOL_Character'Val (249), |
| COBOL_Character'Val (250), COBOL_Character'Val (251), |
| COBOL_Character'Val (252), COBOL_Character'Val (253), |
| COBOL_Character'Val (254), COBOL_Character'Val (255)); |
| |
| COBOL_To_Ada : array (COBOL_Character) of Standard.Character := ( |
| Standard.Character'Val (000), Standard.Character'Val (001), |
| Standard.Character'Val (002), Standard.Character'Val (003), |
| Standard.Character'Val (004), Standard.Character'Val (005), |
| Standard.Character'Val (006), Standard.Character'Val (007), |
| Standard.Character'Val (008), Standard.Character'Val (009), |
| Standard.Character'Val (010), Standard.Character'Val (011), |
| Standard.Character'Val (012), Standard.Character'Val (013), |
| Standard.Character'Val (014), Standard.Character'Val (015), |
| Standard.Character'Val (016), Standard.Character'Val (017), |
| Standard.Character'Val (018), Standard.Character'Val (019), |
| Standard.Character'Val (020), Standard.Character'Val (021), |
| Standard.Character'Val (022), Standard.Character'Val (023), |
| Standard.Character'Val (024), Standard.Character'Val (025), |
| Standard.Character'Val (026), Standard.Character'Val (027), |
| Standard.Character'Val (028), Standard.Character'Val (029), |
| Standard.Character'Val (030), Standard.Character'Val (031), |
| Standard.Character'Val (032), Standard.Character'Val (033), |
| Standard.Character'Val (034), Standard.Character'Val (035), |
| Standard.Character'Val (036), Standard.Character'Val (037), |
| Standard.Character'Val (038), Standard.Character'Val (039), |
| Standard.Character'Val (040), Standard.Character'Val (041), |
| Standard.Character'Val (042), Standard.Character'Val (043), |
| Standard.Character'Val (044), Standard.Character'Val (045), |
| Standard.Character'Val (046), Standard.Character'Val (047), |
| Standard.Character'Val (048), Standard.Character'Val (049), |
| Standard.Character'Val (050), Standard.Character'Val (051), |
| Standard.Character'Val (052), Standard.Character'Val (053), |
| Standard.Character'Val (054), Standard.Character'Val (055), |
| Standard.Character'Val (056), Standard.Character'Val (057), |
| Standard.Character'Val (058), Standard.Character'Val (059), |
| Standard.Character'Val (060), Standard.Character'Val (061), |
| Standard.Character'Val (062), Standard.Character'Val (063), |
| Standard.Character'Val (064), Standard.Character'Val (065), |
| Standard.Character'Val (066), Standard.Character'Val (067), |
| Standard.Character'Val (068), Standard.Character'Val (069), |
| Standard.Character'Val (070), Standard.Character'Val (071), |
| Standard.Character'Val (072), Standard.Character'Val (073), |
| Standard.Character'Val (074), Standard.Character'Val (075), |
| Standard.Character'Val (076), Standard.Character'Val (077), |
| Standard.Character'Val (078), Standard.Character'Val (079), |
| Standard.Character'Val (080), Standard.Character'Val (081), |
| Standard.Character'Val (082), Standard.Character'Val (083), |
| Standard.Character'Val (084), Standard.Character'Val (085), |
| Standard.Character'Val (086), Standard.Character'Val (087), |
| Standard.Character'Val (088), Standard.Character'Val (089), |
| Standard.Character'Val (090), Standard.Character'Val (091), |
| Standard.Character'Val (092), Standard.Character'Val (093), |
| Standard.Character'Val (094), Standard.Character'Val (095), |
| Standard.Character'Val (096), Standard.Character'Val (097), |
| Standard.Character'Val (098), Standard.Character'Val (099), |
| Standard.Character'Val (100), Standard.Character'Val (101), |
| Standard.Character'Val (102), Standard.Character'Val (103), |
| Standard.Character'Val (104), Standard.Character'Val (105), |
| Standard.Character'Val (106), Standard.Character'Val (107), |
| Standard.Character'Val (108), Standard.Character'Val (109), |
| Standard.Character'Val (110), Standard.Character'Val (111), |
| Standard.Character'Val (112), Standard.Character'Val (113), |
| Standard.Character'Val (114), Standard.Character'Val (115), |
| Standard.Character'Val (116), Standard.Character'Val (117), |
| Standard.Character'Val (118), Standard.Character'Val (119), |
| Standard.Character'Val (120), Standard.Character'Val (121), |
| Standard.Character'Val (122), Standard.Character'Val (123), |
| Standard.Character'Val (124), Standard.Character'Val (125), |
| Standard.Character'Val (126), Standard.Character'Val (127), |
| Standard.Character'Val (128), Standard.Character'Val (129), |
| Standard.Character'Val (130), Standard.Character'Val (131), |
| Standard.Character'Val (132), Standard.Character'Val (133), |
| Standard.Character'Val (134), Standard.Character'Val (135), |
| Standard.Character'Val (136), Standard.Character'Val (137), |
| Standard.Character'Val (138), Standard.Character'Val (139), |
| Standard.Character'Val (140), Standard.Character'Val (141), |
| Standard.Character'Val (142), Standard.Character'Val (143), |
| Standard.Character'Val (144), Standard.Character'Val (145), |
| Standard.Character'Val (146), Standard.Character'Val (147), |
| Standard.Character'Val (148), Standard.Character'Val (149), |
| Standard.Character'Val (150), Standard.Character'Val (151), |
| Standard.Character'Val (152), Standard.Character'Val (153), |
| Standard.Character'Val (154), Standard.Character'Val (155), |
| Standard.Character'Val (156), Standard.Character'Val (157), |
| Standard.Character'Val (158), Standard.Character'Val (159), |
| Standard.Character'Val (160), Standard.Character'Val (161), |
| Standard.Character'Val (162), Standard.Character'Val (163), |
| Standard.Character'Val (164), Standard.Character'Val (165), |
| Standard.Character'Val (166), Standard.Character'Val (167), |
| Standard.Character'Val (168), Standard.Character'Val (169), |
| Standard.Character'Val (170), Standard.Character'Val (171), |
| Standard.Character'Val (172), Standard.Character'Val (173), |
| Standard.Character'Val (174), Standard.Character'Val (175), |
| Standard.Character'Val (176), Standard.Character'Val (177), |
| Standard.Character'Val (178), Standard.Character'Val (179), |
| Standard.Character'Val (180), Standard.Character'Val (181), |
| Standard.Character'Val (182), Standard.Character'Val (183), |
| Standard.Character'Val (184), Standard.Character'Val (185), |
| Standard.Character'Val (186), Standard.Character'Val (187), |
| Standard.Character'Val (188), Standard.Character'Val (189), |
| Standard.Character'Val (190), Standard.Character'Val (191), |
| Standard.Character'Val (192), Standard.Character'Val (193), |
| Standard.Character'Val (194), Standard.Character'Val (195), |
| Standard.Character'Val (196), Standard.Character'Val (197), |
| Standard.Character'Val (198), Standard.Character'Val (199), |
| Standard.Character'Val (200), Standard.Character'Val (201), |
| Standard.Character'Val (202), Standard.Character'Val (203), |
| Standard.Character'Val (204), Standard.Character'Val (205), |
| Standard.Character'Val (206), Standard.Character'Val (207), |
| Standard.Character'Val (208), Standard.Character'Val (209), |
| Standard.Character'Val (210), Standard.Character'Val (211), |
| Standard.Character'Val (212), Standard.Character'Val (213), |
| Standard.Character'Val (214), Standard.Character'Val (215), |
| Standard.Character'Val (216), Standard.Character'Val (217), |
| Standard.Character'Val (218), Standard.Character'Val (219), |
| Standard.Character'Val (220), Standard.Character'Val (221), |
| Standard.Character'Val (222), Standard.Character'Val (223), |
| Standard.Character'Val (224), Standard.Character'Val (225), |
| Standard.Character'Val (226), Standard.Character'Val (227), |
| Standard.Character'Val (228), Standard.Character'Val (229), |
| Standard.Character'Val (230), Standard.Character'Val (231), |
| Standard.Character'Val (232), Standard.Character'Val (233), |
| Standard.Character'Val (234), Standard.Character'Val (235), |
| Standard.Character'Val (236), Standard.Character'Val (237), |
| Standard.Character'Val (238), Standard.Character'Val (239), |
| Standard.Character'Val (240), Standard.Character'Val (241), |
| Standard.Character'Val (242), Standard.Character'Val (243), |
| Standard.Character'Val (244), Standard.Character'Val (245), |
| Standard.Character'Val (246), Standard.Character'Val (247), |
| Standard.Character'Val (248), Standard.Character'Val (249), |
| Standard.Character'Val (250), Standard.Character'Val (251), |
| Standard.Character'Val (252), Standard.Character'Val (253), |
| Standard.Character'Val (254), Standard.Character'Val (255)); |
| |
| type Alphanumeric is array (Positive range <>) of COBOL_Character; |
| -- pragma Pack (Alphanumeric); |
| |
| function To_COBOL (Item : String) return Alphanumeric; |
| function To_Ada (Item : Alphanumeric) return String; |
| |
| procedure To_COBOL |
| (Item : String; |
| Target : out Alphanumeric; |
| Last : out Natural); |
| |
| procedure To_Ada |
| (Item : Alphanumeric; |
| Target : out String; |
| Last : out Natural); |
| |
| type Numeric is array (Positive range <>) of COBOL_Character; |
| -- pragma Pack (Numeric); |
| |
| -------------------------------------------- |
| -- Formats For COBOL Data Representations -- |
| -------------------------------------------- |
| |
| type Display_Format is private; |
| |
| Unsigned : constant Display_Format; |
| Leading_Separate : constant Display_Format; |
| Trailing_Separate : constant Display_Format; |
| Leading_Nonseparate : constant Display_Format; |
| Trailing_Nonseparate : constant Display_Format; |
| |
| type Binary_Format is private; |
| |
| High_Order_First : constant Binary_Format; |
| Low_Order_First : constant Binary_Format; |
| Native_Binary : constant Binary_Format; |
| High_Order_First_Unsigned : constant Binary_Format; |
| Low_Order_First_Unsigned : constant Binary_Format; |
| Native_Binary_Unsigned : constant Binary_Format; |
| |
| type Packed_Format is private; |
| |
| Packed_Unsigned : constant Packed_Format; |
| Packed_Signed : constant Packed_Format; |
| |
| ------------------------------------------------------------ |
| -- Types For External Representation Of COBOL Binary Data -- |
| ------------------------------------------------------------ |
| |
| type Byte is mod 2 ** COBOL_Character'Size; |
| type Byte_Array is array (Positive range <>) of Byte; |
| -- pragma Pack (Byte_Array); |
| |
| Conversion_Error : exception; |
| |
| generic |
| type Num is delta <> digits <>; |
| |
| package Decimal_Conversions is |
| |
| -- Display Formats: data values are represented as Numeric |
| |
| function Valid |
| (Item : Numeric; |
| Format : Display_Format) return Boolean; |
| |
| function Length |
| (Format : Display_Format) return Natural; |
| |
| function To_Decimal |
| (Item : Numeric; |
| Format : Display_Format) |
| return Num; |
| |
| function To_Display |
| (Item : Num; |
| Format : Display_Format) return Numeric; |
| |
| -- Packed Formats: data values are represented as Packed_Decimal |
| |
| function Valid |
| (Item : Packed_Decimal; |
| Format : Packed_Format) return Boolean; |
| |
| function Length |
| (Format : Packed_Format) return Natural; |
| |
| function To_Decimal |
| (Item : Packed_Decimal; |
| Format : Packed_Format) return Num; |
| |
| function To_Packed |
| (Item : Num; |
| Format : Packed_Format) return Packed_Decimal; |
| |
| -- Binary Formats: external data values are represented as Byte_Array |
| |
| function Valid |
| (Item : Byte_Array; |
| Format : Binary_Format) return Boolean; |
| |
| function Length |
| (Format : Binary_Format) |
| return Natural; |
| |
| function To_Decimal |
| (Item : Byte_Array; |
| Format : Binary_Format) return Num; |
| |
| function To_Binary |
| (Item : Num; |
| Format : Binary_Format) return Byte_Array; |
| |
| -- Internal Binary formats: data values are of type Binary/Long_Binary |
| |
| function To_Decimal (Item : Binary) return Num; |
| function To_Decimal (Item : Long_Binary) return Num; |
| |
| function To_Binary (Item : Num) return Binary; |
| function To_Long_Binary (Item : Num) return Long_Binary; |
| |
| private |
| pragma Inline (Length); |
| pragma Inline (To_Binary); |
| pragma Inline (To_Decimal); |
| pragma Inline (To_Display); |
| pragma Inline (To_Long_Binary); |
| pragma Inline (Valid); |
| |
| end Decimal_Conversions; |
| |
| ------------------------------------------ |
| -- Implementation Dependent Definitions -- |
| ------------------------------------------ |
| |
| -- The implementation dependent definitions are wholly contained in the |
| -- private part of this spec (the body is implementation independent) |
| |
| private |
| ------------------- |
| -- Binary Format -- |
| ------------------- |
| |
| type Binary_Format is (H, L, N, HU, LU, NU); |
| |
| subtype Binary_Unsigned_Format is Binary_Format range HU .. NU; |
| |
| High_Order_First : constant Binary_Format := H; |
| Low_Order_First : constant Binary_Format := L; |
| Native_Binary : constant Binary_Format := N; |
| High_Order_First_Unsigned : constant Binary_Format := HU; |
| Low_Order_First_Unsigned : constant Binary_Format := LU; |
| Native_Binary_Unsigned : constant Binary_Format := NU; |
| |
| --------------------------- |
| -- Packed Decimal Format -- |
| --------------------------- |
| |
| -- Packed decimal numbers use the IBM mainframe format: |
| |
| -- dd dd ... dd dd ds |
| |
| -- where d are the Digits, in natural left to right order, and s is |
| -- the sign digit. If the number of Digits os even, then the high |
| -- order (leftmost) Digits is always a 0. For example, a six digit |
| -- number has the format: |
| |
| -- 0d dd dd ds |
| |
| -- The sign digit has the possible values |
| |
| -- 16#0A# non-standard plus sign |
| -- 16#0B# non-standard minus sign |
| -- 16#0C# standard plus sign |
| -- 16#0D# standard minus sign |
| -- 16#0E# non-standard plus sign |
| -- 16#0F# standard unsigned sign |
| |
| -- The non-standard signs are recognized on input, but never generated |
| -- for output numbers. The 16#0F# distinguishes unsigned numbers from |
| -- signed positive numbers, but is treated as positive for computational |
| -- purposes. This format provides distinguished positive and negative |
| -- zero values, which behave the same in all operations. |
| |
| type Packed_Format is (U, S); |
| |
| Packed_Unsigned : constant Packed_Format := U; |
| Packed_Signed : constant Packed_Format := S; |
| |
| type Packed_Representation_Type is (IBM); |
| -- Indicator for format used for packed decimal |
| |
| Packed_Representation : constant Packed_Representation_Type := IBM; |
| -- This version of the spec uses IBM internal format, as described above |
| |
| ----------------------------- |
| -- Display Decimal Formats -- |
| ----------------------------- |
| |
| -- Display numbers are stored in standard ASCII format, as ASCII strings. |
| -- For the embedded signs, the following codes are used: |
| |
| -- 0-9 positive: 16#30# .. 16#39# (i.e. natural ASCII digit code) |
| -- 0-9 negative: 16#20# .. 16#29# (ASCII digit code - 16#10#) |
| |
| type Display_Format is (U, LS, TS, LN, TN); |
| |
| Unsigned : constant Display_Format := U; |
| Leading_Separate : constant Display_Format := LS; |
| Trailing_Separate : constant Display_Format := TS; |
| Leading_Nonseparate : constant Display_Format := LN; |
| Trailing_Nonseparate : constant Display_Format := TN; |
| |
| subtype COBOL_Digits is COBOL_Character range '0' .. '9'; |
| -- Digit values in display decimal |
| |
| COBOL_Space : constant COBOL_Character := ' '; |
| COBOL_Plus : constant COBOL_Character := '+'; |
| COBOL_Minus : constant COBOL_Character := '-'; |
| -- Sign values for Leading_Separate and Trailing_Separate formats |
| |
| subtype COBOL_Plus_Digits is COBOL_Character |
| range COBOL_Character'Val (16#30#) .. COBOL_Character'Val (16#39#); |
| -- Values used for embedded plus signs in nonseparate formats |
| |
| subtype COBOL_Minus_Digits is COBOL_Character |
| range COBOL_Character'Val (16#20#) .. COBOL_Character'Val (16#29#); |
| -- Values used for embedded minus signs in nonseparate formats |
| |
| end Interfaces.COBOL; |
