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-- CXAA010.A
--
-- Grant of Unlimited Rights
--
-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
-- unlimited rights in the software and documentation contained herein.
-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
-- this public release, the Government intends to confer upon all
-- recipients unlimited rights equal to those held by the Government.
-- These rights include rights to use, duplicate, release or disclose the
-- released technical data and computer software in whole or in part, in
-- any manner and for any purpose whatsoever, and to have or permit others
-- to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--*
--
-- OBJECTIVE:
-- Check that the operations defined in package Ada.Text_IO.Decimal_IO
-- are available, and that they function correctly when used for the
-- input/output of Decimal types.
--
-- TEST DESCRIPTION:
-- This test demonstrates the Put and Get procedures found in the
-- generic package Ada.Text_IO.Decimal_IO. Both Put and Get are
-- overloaded to allow placement or extraction of decimal values
-- to/from a text file or a string. This test demonstrates both forms
-- of each subprogram.
-- The test defines an array of records containing decimal value
-- and string component fields. All component values are placed in a
-- Text_IO file, with the decimal values being placed there using the
-- version of Put defined for files, and using user-specified formatting
-- parameters. The data is later extracted from the file, with the
-- decimal values being removed using the version of Get defined for
-- files. Decimal values are then written to strings, using the
-- appropriate Put procedure. Finally, extraction of the decimal data
-- from the strings completes the evaluation of the Decimal_IO package
-- subprograms.
-- The reconstructed data is verified at the end of the test against the
-- data originally written to the file.
--
-- APPLICABILITY CRITERIA:
-- Applicable to all implementations capable of supporting external
-- Text_IO files and Decimal Fixed Point Types
--
-- All implementations must attempt to compile this test.
--
-- For implementations validating against Information Systems Annex (F):
-- this test must execute and report PASSED.
--
-- For implementations not validating against Annex F:
-- this test may report compile time errors at one or more points
-- indicated by "-- ANX-F RQMT", in which case it may be graded as inapplicable.
-- Otherwise, the test must execute and report PASSED.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 20 Feb 95 SAIC Modified test to allow for Use_Error/Name_Error
-- generation by an implementation not supporting
-- Text_IO operations.
-- 14 Nov 95 SAIC Corrected string indexing for ACVC 2.0.1.
-- 27 Feb 97 PWB.CTA Allowed for non-support of some IO operations
-- 16 FEB 98 EDS Modified documentation.
--!
with Ada.Text_IO;
with Report;
procedure CXAA010 is
use Ada.Text_IO;
Tax_Roll : Ada.Text_IO.File_Type;
Tax_Roll_Name : constant String :=
Report.Legal_File_Name ( Nam => "CXAA010" );
Incomplete : exception;
begin
Report.Test ("CXAA010", "Check that the operations defined in package " &
"Ada.Text_IO.Decimal_IO are available, and " &
"that they function correctly when used for " &
"the input/output of Decimal types");
Test_for_Decimal_IO_Support:
begin
-- An implementation that does not support Text_IO creation or naming
-- of external files in a particular environment will raise Use_Error
-- or Name_Error on a call to Text_IO Create. This block statement
-- encloses a call to Create, which should produce an exception in a
-- non-supportive environment. Either of these exceptions will be
-- handled to produce a Not_Applicable result.
Ada.Text_IO.Create (Tax_Roll, Ada.Text_IO.Out_File, Tax_Roll_Name);
exception
when Ada.Text_IO.Use_Error | Ada.Text_IO.Name_Error =>
Report.Not_Applicable
( "Files not supported - Create as Out_File for Text_IO" );
raise Incomplete;
end Test_for_Decimal_IO_Support;
Taxation:
declare
ID_Length : constant := 5;
Price_String_Length : constant := 5;
Value_String_Length : constant := 6;
Total_String_Length : constant := 20;
Spacer : constant String := " "; -- Two blanks.
type Price_Type is delta 0.1 digits 4; -- ANX-F RQMT
type Value_Type is delta 0.01 digits 5; -- ANX-F RQMT
type Property_Type is
record
Parcel_ID : String (1..ID_Length);
Purchase_Price : Price_Type;
Assessed_Value : Value_Type;
end record;
type City_Block_Type is array (1..4) of Property_Type;
subtype Tax_Bill_Type is string (1..Total_String_Length);
type Tax_Bill_Array_Type is array (1..4) of Tax_Bill_Type;
Neighborhood : City_Block_Type :=
(("X9254", 123.0, 135.00), ("X3569", 345.0, 140.50),
("X3434", 234.0, 179.50), ("X8838", 456.0, 158.00));
Neighborhood_Taxes : Tax_Bill_Array_Type;
package Price_IO is new Ada.Text_IO.Decimal_IO (Price_Type);
package Value_IO is new Ada.Text_IO.Decimal_IO (Value_Type);
begin -- Taxation
Assessors_Office:
begin
for Parcel in City_Block_Type'Range loop
-- Note: All data in the file will be separated with a
-- two-character blank spacer.
Ada.Text_IO.Put(Tax_Roll, Neighborhood(Parcel).Parcel_ID);
Ada.Text_IO.Put(Tax_Roll, Spacer);
-- Use Decimal_IO.Put with non-default format parameters to
-- place decimal data into file.
Price_IO.Put (Tax_Roll, Neighborhood(Parcel).Purchase_Price,
Fore => 3, Aft =>1, Exp => 0);
Ada.Text_IO.Put(Tax_Roll, Spacer);
Value_IO.Put (Tax_Roll, Neighborhood(Parcel).Assessed_Value,
Fore => 3, Aft =>2, Exp => 0);
Ada.Text_IO.New_Line(Tax_Roll);
end loop;
Ada.Text_IO.Close (Tax_Roll);
exception
when others =>
Report.Failed ("Exception raised in Assessor's Office");
end Assessors_Office;
Twice_A_Year:
declare
procedure Collect_Tax(Index : in Integer;
Tax_Array : in out Tax_Bill_Array_Type) is
ID : String (1..ID_Length);
Price : Price_Type := 0.0;
Value : Value_Type := 0.00;
Price_String : String (1..Price_String_Length);
Value_String : String (1..Value_String_Length);
begin
-- Extract information from the Text_IO file; one string, two
-- decimal values.
-- Note that the Spacers that were put in the file above are
-- not individually read here, due to the fact that each call
-- to Decimal_IO.Get below uses a zero in the Width field,
-- which allows each Get procedure to skip these leading blanks
-- prior to extracting the numeric value.
Ada.Text_IO.Get (Tax_Roll, ID);
-- A zero value of Width is provided, so the following
-- two calls to Decimal_IO.Get will skip the leading blanks,
-- (from the Spacer variable above), then read the numeric
-- literals.
Price_IO.Get (Tax_Roll, Price, 0);
Value_IO.Get (Tax_Roll, Value, 0);
Ada.Text_IO.Skip_Line (Tax_Roll);
-- Convert the values read from the file into string format,
-- using user-specified format parameters.
-- Format of the Price_String should be "nnn.n"
-- Format of the Value_String should be "nnn.nn"
Price_IO.Put (To => Price_String,
Item => Price,
Aft => 1);
Value_IO.Put (Value_String, Value, 2);
-- Construct a string of length 20 that contains the Parcel_ID,
-- the Purchase_Price, and the Assessed_Value, separated by
-- two-character blank data spacers. Store this string
-- into the string array out parameter.
-- Format of each Tax_Array element should be
-- "Xnnnn nnn.n nnn.nn" (with an 'n' signifying a digit).
Tax_Array(Index) := ID & Spacer &
Price_String & Spacer &
Value_String;
exception
when Data_Error =>
Report.Failed("Data Error raised during the extraction " &
"of decimal data from the file");
when others =>
Report.Failed("Exception in Collect_Tax procedure");
end Collect_Tax;
begin -- Twice_A_Year
Ada.Text_IO.Open (Tax_Roll, Ada.Text_IO.In_File, Tax_Roll_Name);
-- Determine property tax bills for the entire neighborhood from
-- the information that is stored in the file. Store information
-- in the Neighborhood_Taxes string array.
for Parcel in City_Block_Type'Range loop
Collect_Tax (Parcel, Neighborhood_Taxes);
end loop;
exception
when others =>
Report.Failed ("Exception in Twice_A_Year Block");
end Twice_A_Year;
-- Use Decimal_IO Get procedure to extract information from a string.
-- Verify data against original values.
Validation_Block:
declare
TC_ID : String (1..ID_Length); -- 1..5
TC_Price : Price_Type;
TC_Value : Value_Type;
Length : Positive;
Front,
Rear : Integer := 0;
begin
for Parcel in City_Block_Type'Range loop
-- Extract values from the strings of the string array.
-- Each element of the string array is 20 characters long; the
-- first five characters are the Parcel_ID, two blank characters
-- separate data, the next five characters contain the Price
-- decimal value, two blank characters separate data, the last
-- six characters contain the Value decimal value.
-- Extract each of these components in turn.
Front := 1; -- 1
Rear := ID_Length; -- 5
TC_ID := Neighborhood_Taxes(Parcel)(Front..Rear);
-- Extract the decimal value from the next slice of the string.
Front := Rear + 3; -- 8
Rear := Front + Price_String_Length - 1; -- 12
Price_IO.Get (Neighborhood_Taxes(Parcel)(Front..Rear),
Item => TC_Price,
Last => Length);
-- Extract next decimal value from slice of string, based on
-- length of preceding strings read from string array element.
Front := Rear + 3; -- 15
Rear := Total_String_Length; -- 20
Value_IO.Get (Neighborhood_Taxes(Parcel)(Front..Rear),
Item => TC_Value,
Last => Length);
if TC_ID /= Neighborhood(Parcel).Parcel_ID or
TC_Price /= Neighborhood(Parcel).Purchase_Price or
TC_Value /= Neighborhood(Parcel).Assessed_Value
then
Report.Failed ("Incorrect data validation");
end if;
end loop;
exception
when others => Report.Failed ("Exception in Validation Block");
end Validation_Block;
-- Check that the Text_IO file is open, then delete.
if not Ada.Text_IO.Is_Open (Tax_Roll) then
Report.Failed ("File not left open after processing");
Ada.Text_IO.Open (Tax_Roll, Ada.Text_IO.Out_File, Tax_Roll_Name);
end if;
Ada.Text_IO.Delete (Tax_Roll);
exception
when others =>
Report.Failed ("Exception in Taxation block");
-- Check that the Text_IO file is open, then delete.
if not Ada.Text_IO.Is_Open (Tax_Roll) then
Ada.Text_IO.Open (Tax_Roll,
Ada.Text_IO.Out_File,
Tax_Roll_Name);
end if;
Ada.Text_IO.Delete (Tax_Roll);
end Taxation;
Report.Result;
exception
when Incomplete =>
Report.Result;
when others =>
Report.Failed ( "Unexpected exception" );
Report.Result;
end CXAA010;