ISO/IEC 9496:2003
(Main)CHILL — The ITU-T programming language
CHILL — The ITU-T programming language
ISO/IEC 9496:2003 defines the ITU-T programming language CHILL. CHILL is a strongly typed, block structured and object-oriented language designed primarily for the implementation of large and complex embedded systems. CHILL was designed to provide reliability and run time efficiency, at the same time sufficient flexibility and powerfulness to encompass the required range of applications. CHILL also provides facilities that encourage piecewise and modular development of large systems.
CHILL — Le langage de programmation de l'UIT-T
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 9496
Fourth edition
2003-12-15
CHILL — The ITU-T programming
language
CHILL — Le langage de programmation de l'UIT-T
Reference number
©
ISO/IEC 2003
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© ISO/IEC 2003
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ii © ISO/IEC 2003 – All rights reserved
CONTENTS
Page
1 Introduction . 1
1.1 General. 1
1.2 Language survey . 1
1.3 Modes and classes . 2
1.4 Locations and their accesses . 3
1.5 Values and their operations . 3
1.6 Actions . 4
1.7 Input and output . 4
1.8 Exception handling. 4
1.9 Time supervision. 5
1.10 Program structure. 5
1.11 Concurrent execution . 5
1.12 General semantic properties. 6
1.13 Implementation options. 6
2 Preliminaries. 7
2.1 The metalanguage . 7
2.2 Vocabulary. 8
2.3 The use of spaces . 9
2.4 Comments . 9
2.5 Format effectors . 9
2.6 Compiler directives . 10
2.7 Names and their defining occurrences . 10
3 Modes and classes. 12
3.1 General. 12
3.2 Mode definitions . 13
3.3 Mode classification . 16
3.4 Discrete modes. 17
3.5 Real modes. 20
3.6 Powerset modes. 22
3.7 Reference modes . 22
3.8 Procedure modes . 23
3.9 Instance modes. 24
3.10 Synchronization modes . 25
3.11 Input-Output Modes . 26
3.12 Timing modes . 28
3.13 Composite modes. 29
3.14 Dynamic modes. 37
3.15 Moreta Modes . 38
4 Locations and their accesses . 45
4.1 Declarations . 45
4.2 Locations. 47
5 Values and their operations. 54
5.1 Synonym definitions . 54
5.2 Primitive value . 55
5.3 Values and expressions . 70
© ISO/IEC 2003 – All rights reserved iii
Page
6 Actions. 79
6.1 General. 79
6.2 Assignment action. 79
6.3 If action . 81
6.4 Case action . 81
6.5 Do action. 83
6.6 Exit action . 86
6.7 Call action . 87
6.8 Result and return action. 90
6.9 Goto action. 90
6.10 Assert action. 91
6.11 Empty action . 91
6.12 Cause action . 91
6.13 Start action . 91
6.14 Stop action. 91
6.15 Continue action . 92
6.16 Delay action . 92
6.17 Delay case action. 92
6.18 Send action. 93
6.19 Receive case action . 94
6.20 CHILL built-in routine calls. 97
7 Input and Output. 102
7.1 I/O reference model. 102
7.2 Association values. 104
7.3 Access values . 104
7.4 Built-in routines for input output. 105
7.5 Text input output. 112
8 Exception handling . 120
8.1 General. 120
8.2 Handlers . 121
8.3 Handler identification. 121
9 Time supervision . 122
9.1 General. 122
9.2 Timeoutable processes . 122
9.3 Timing actions. 122
9.4 Built-in routines for time. 124
10 Program Structure. 125
10.1 General. 125
10.2 Reaches and nesting . 127
10.3 Begin-
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