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    pygments.lexers.qvt
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    Lexer for QVT Operational language.

    :copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
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    For the `QVT Operational Mapping language <http://www.omg.org/spec/QVT/1.1/>`_.

    Reference for implementing this: «Meta Object Facility (MOF) 2.0
    Query/View/Transformation Specification», Version 1.1 - January 2011
    (http://www.omg.org/spec/QVT/1.1/), see §8.4, «Concrete Syntax» in
    particular.

    Notable tokens assignments:

    - Name.Class is assigned to the identifier following any of the following
      keywords: metamodel, class, exception, primitive, enum, transformation
      or library

    - Name.Function is assigned to the names of mappings and queries

    - Name.Builtin.Pseudo is assigned to the pre-defined variables 'this',
      'self' and 'result'.
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