forked from afp-mirror/Core_DOM
67 lines
2.8 KiB
Plaintext
67 lines
2.8 KiB
Plaintext
(***********************************************************************************
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* Copyright (c) 2016-2018 The University of Sheffield, UK
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*******************************************************************************\***)
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section\<open>Basic Data Types\<close>
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text\<open>
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\label{sec:Core_DOM_Basic_Datatypes}
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This theory formalizes the primitive data types used by the DOM standard~\cite{dom-specification}.
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\<close>
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theory Core_DOM_Basic_Datatypes
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imports
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Main
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begin
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type_synonym USVString = string
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text\<open>
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In the official standard, the type @{type "USVString"} corresponds to the set of all possible
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sequences of Unicode scalar values. As we are not interested in analyzing the specifics of Unicode
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strings, we just model @{type "USVString"} using the standard type @{type "string"} of Isabelle/HOL.
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\<close>
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type_synonym DOMString = string
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text\<open>
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In the official standard, the type @{type "DOMString"} corresponds to the set of all possible
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sequences of code units, commonly interpreted as UTF-16 encoded strings. Again, as we are not
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interested in analyzing the specifics of Unicode strings, we just model @{type "DOMString"} using
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the standard type @{type "string"} of Isabelle/HOL.
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\<close>
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type_synonym doctype = DOMString
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paragraph\<open>Examples\<close>
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definition html :: doctype
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where "html = ''<!DOCTYPE html>''"
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hide_const id
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text \<open>This dummy locale is used to create scoped definitions by using global interpretations
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and defines.\<close>
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locale l_dummy
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end
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