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Commit 452e9d84 authored by Benjamin Engel's avatar Benjamin Engel
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Add Language Concepts introduction by Gil Amid

parent 05b1f619
......@@ -64,6 +64,15 @@ WP DM-Ontology - Develop ontology to establish relations between entities
==== Language Concepts
ASAM OpenSCENARIO 2.0 is based on a DSL – Domain Specific Language of declarative nature. This language demonstrates characteristics similar to a programming language, however as this is a declarative language, it specified what should happen, rather than how it should happen. The chapter described the syntax and semantics of the language as well capabilities such as libraries, and the abilities to measure and define success criteria. The language will be designed to deliver key concepts and requirement:
Readability:: The quality of being easy to be read and understand by a target audience, which includes not only domain experts, programmers and engineers, but also safety engineers, regulators, and potentially even the general public. While this has clear implications for suitable surface syntax of the language, it also requires the semantics of the language to be well-defined, regular, and focused on the problem domain, and not technical implementation artifacts.
Expressivity:: The ability of the language to allow the concise and direct expression of domain subject matter . This interacts with readability and the declarative nature of the language, but also enables for example the ability to query databases of scenarios using language semantics rather than only through meta-data-based queries.
Composability:: The quality of being able to use standard language building blocks to incrementally build up more complex behavior in well-defined ways. This requires clear rules for composition and composition operators, that afford some level of predictable behavior post composition, while also allowing for interesting emergent behavior to occur, to ensure coverage of overall realistic traffic behavior.
Portability:: The quality of being able to use the language and scenarios written in it across many execution platforms (including simulation platforms as well as real-world test tracks), without undue adjustments needing to be made. This includes the provision of suitable fallback mechanisms to deal with necessary differences between platforms.
Support for Reuse:: The quality of being able to reuse scenarios and parts of scenarios across multiple levels of abstraction, platforms, and use cases without undue adjustments needing to be made. This comprises suitable library concepts and mechanisms in the language, as well as
Extendibility:: The quality of allowing for easy extension of the underlying language mechanisms and domain model towards new requirements, including new traffic participants, their models and properties, compositions, and constraints.
===== Semantics, syntax and structure
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