ASE2 CARD CATALOG ENTRY

Instructions:


ASSET OVERVIEW

UNIT NAME

Diana

VERSION
OCT 93
REVIEW CODE
C1 1.0 A
INET ADDRESS
librarian@source.asset.com
AUTHOR
William Easton
Peregrine Systems, Inc.
RIGHTS
Approved for public release; distribution unlimited
COPYRIGHT
1993 Peregrine Systems Inc
DATE CREATED
13 October 1993
DATE RELEASED
14 January 1994
DATE LAST UPDATED
14 January 1994
LOCATION
PAL
ENVIRONMENT
LIMITATIONS
CERTIFICATION
Ada System Certifier_1 1.0
Date/Time of Processing: Wednesday 25 May       1994 04:30:49Pm
Overall Assessment of System: OK
Classification of System: A
Basis of Classification --
    Syntax Errors                               PASS
    Completeness                                PASS
    Independence from External Libraries        PASS
    Independence from a Specific Ada Compiler   PASS

Number of ...
  Files             119
  Library Units     122
  Lines           39755
  Statements      20127
  Comments         3145

CLASSIFICATION

KEYWORD
Diana
Lexical Analyzer
Analyzer, Lexical
INDEX
Easton, William
Peregrine Systems, Inc.
DEPENDENCIES
None
SEE ALSO
SHORT DESCRIPTION
A translator for Ada to Diana with tools for using Diana
TAXONOMY


Software Development Tools
    Ada to Diana


FILE LISTING

FILE SPECS
You are on CDROM ID ase02_02
Click here to enter Asset Directory/transfer Asset File(s):
../../ase02_02/tools/diana
DIRECTORY DISPLAY
Follow path to see directory

ABSTRACT

Ada/Diana Front End Tools

This software system is an Ada front end, that is a system which translates Ada into Diana, together with associated tools for use of the Diana.

The front end is to be considered a prototype version. It presently converts statically correct Ada to the corresponding Diana representation; there is no guarantee that statically incorrect programs will be diagnosed as such. (It is the intention to replace this front end with a production-quality version which will also diagnose statically incorrect programs.)

The language accepted is the entire Ada language, including library support, generics, etc., but not (yet) including any of the Chapter 13 optional features. The requirement is that the front end accept the ACVC class A and class C tests.

The implementation of Diana uses a software virtual memory, implemented as a DIRECT_IO file with fixed-size pages. Diana nodes are represented as pointers into this file; the current implementation of a pointer is a record containing a node type, a page number and a location within a page. (Of course, it is strongly recommended that the details of the current implementation not be relied upon.) The definition of the Diana is given in IDL form and matches the Intermetrics 1986 draft definition of Diana (rather than that published in 1983). Program access to Diana nodes and attributes is given by an Ada packages (actually, three packages) very similar to that given in the 1983 Diana specification.

The system includes utilities for processing the IDL specification of Diana to produce programs and packages required for using Diana. It also includes a LALR grammar generator (similar in scope to yacc, but implemented in Ada and tailored to the present project). In addition, a tool for printing the Diana in an indented format is included.

The system consists of about 35,000 lines of Ada source, probably about 15,000 Ada statements. Because of the virtual-memory implementation, there should be no arbitrary small limitations due to main memory table sizes.


REVISION HISTORY

13 October 1993   OCT 93   Release to ASSET
14 January 1994   OCT 93   Initial release to the PAL

RELEASE NOTICE

This prologue must be included in all copies of this software.
Restrictions on use or distribution:  NONE

DISCLAIMER

	This software and its documentation are provided "AS IS" and
without any expressed or implied warranties whatsoever.  No warranties
as to performance, merchantability, or fitness for a particular
purpose exist.
	The user is advised to test the software thoroughly before
relying on it.  The user must assume the entire risk and liability of
using this software.  In no event shall any person or organization of
people be held responsible for any direct, indirect, consequential or
inconsequential damages or lost profits.

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