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Section 5.3.

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Achim D. Brucker 2019-08-11 17:03:26 +01:00
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examples/technical_report/Isabelle_DOF-Manual/05_Implementation.thy
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@ -155,30 +155,27 @@ text\<Open>as defined in <@>{docitem \<Open>d1\<Close>} ...\<Close>
section\<open>Implementing Second-level Type-Checking\<close> section\<open>Implementing Second-level Type-Checking\<close>
text\<open> text\<open>
On expressions for attribute values, for which we chose to use HOL syntax On expressions for attribute values, for which we chose to use HOL syntax to avoid that users
to avoid that users need to learn another syntax, we implemented need to learn another syntax, we implemented an own pass over type-checked terms. Stored in the
an own pass over type-checked terms. Stored in the late-binding table late-binding table \inlineisar+ISA_transformer_tab+, we register for each inner-syntax-annotation
\inlineisar+ISA_transformer_tab+, we register for each inner-syntax-annotation (ISA's), (ISA's), a function of type
a function of type
\begin{sml} \begin{sml}
theory -> term * typ * Position.T -> term option theory -> term * typ * Position.T -> term option
\end{sml} \end{sml}
Executed in a second pass of term parsing, ISA's may just return Executed in a second pass of term parsing, ISA's may just return \inlineisar+None+. This is
\inlineisar+None+. This is adequate for ISA's just performing some checking in adequate for ISA's just performing some checking in the logical context \inlineisar+theory+;
the logical context \inlineisar+theory+; ISA's of this kind report errors ISA's of this kind report errors by exceptions. In contrast, \<^emph>\<open>transforming\<close> ISA's will
by exceptions. In contrast, \emph{transforming} ISA's will yield a term; this yield a term; this is adequate, for example, by replacing a string-reference to some term denoted
is adequate, for example, by replacing a string-reference to some term denoted by it. by it. This late-binding table is also used to generate standard inner-syntax-antiquotations from
This late-binding table is also used to generate standard a \inlineisar+doc_class+.
inner-syntax-antiquotations from a \inlineisar+doc_class+.
\<close> \<close>
section\<open>Programming Class Invariants\<close> section\<open>Programming Class Invariants\<close>
text\<open> text\<open>
For the moment, there is no high-level syntax for the definition of For the moment, there is no high-level syntax for the definition of class invariants. A
class invariants. A formulation, in SML, of the first class-invariant formulation, in SML, of the first class-invariant in @{docref "sec:class_inv"} is straight-forward:
in \autoref{sec:class_inv} is straight-forward:
\begin{sml} \begin{sml}
fun check_result_inv oid {is_monitor:bool} ctxt = fun check_result_inv oid {is_monitor:bool} ctxt =