0008193: Redefine keywords and reserved words

ETSI's Bug Tracker - Part 01: TTCN-3 Core Language
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ID	Project	Category	View Status	Date Submitted	Last Update
0008193	Part 01: TTCN-3 Core Language	Technical	public	19-01-2023 10:15	05-09-2023 10:24

Reporter	Matthias Simon
Assigned To	Jens Grabowski
Priority	normal	Severity	minor	Reproducibility	have not tried
Status	assigned	Resolution	open
Platform		OS		OS Version
Product Version
Target Version		Fixed in Version
Clause Reference(s)	n/a
Source (company - Author)	Nokia - Matthias Simon

Summary	0008193: Redefine keywords and reserved words
Description	An explicit distinction between keywords and reserved words is a prerequisite for moving language parts, such as predefined functions, matching-mechanism or timers to some kind of predefined standard library. It would also simplify BNF rules. Where's the difference? A _reserved word_ is an identifier which cannot be used as a name for user-defined variables, functions, parameters, etc. For example the identifiers "int2str", "integer", "this" or "object" are reserved words and have not special syntactic meaning except for being predefined or reserved. In some scopes reserved words are allowed to be used by the user (for example as name in field-definitions). A _keyword_ is a word with special meaning in a particular context. Keywords should not be used as identifiers (for example "for", "while", ...). There are some few exceptions however ("testcase", "class", "all", "any", ...): testcase.stop; // "testcase" is used as identifier referencing the current testcase testcase TC1() {} // "testcase" is a keyword introducing a testcase definition
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Issue History
Date Modified	Username	Field	Change
19-01-2023 10:15	Matthias Simon	New Issue
05-09-2023 10:22	Jens Grabowski	Note Added: 0016519
05-09-2023 10:24	Jens Grabowski	Assigned To	=> Jens Grabowski
05-09-2023 10:24	Jens Grabowski	Status	new => assigned

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