doc-src/TutorialI/Misc/document/prime_def.tex

introduce attribute case_prod for combining case rules
* * *
[PATCH 1/9] Make tac independent of consumes

From 1a53ef4c070f924ff8e69529b0c1b13fa2844722 Mon Sep 17 00:00:00 2001
---
case_product.ML | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
* * *
[PATCH 2/9] Replace MRS by OF

From da55d08ae287bfdc18dec554067b45a3e298c243 Mon Sep 17 00:00:00 2001
---
case_product.ML | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
* * *
[PATCH 3/9] Clean up tactic

From d26d50caaa3526c8c0625d7395467c6914f1a8d9 Mon Sep 17 00:00:00 2001
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case_product.ML | 13 +++++--------
1 files changed, 5 insertions(+), 8 deletions(-)
* * *
[PATCH 4/9] Move out get_consumes a bit more

From 6ed5415f29cc43cea30c216edb1e74ec6c0f6c33 Mon Sep 17 00:00:00 2001
---
case_product.ML | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
* * *
[PATCH 5/9] Clean up tactic

From d301cfe6377e9f7db74b190fb085e0e66eeadfb5 Mon Sep 17 00:00:00 2001
---
case_product.ML | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
* * *
[PATCH 6/9] Cleanup build_concl_prems

From c30889e131e74a92caac5b1e6d3d816890406ca7 Mon Sep 17 00:00:00 2001
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case_product.ML | 18 ++++++++----------
1 files changed, 8 insertions(+), 10 deletions(-)
* * *
[PATCH 7/9] Split logic & annotation a bit

From e065606118308c96e013fad72ab9ad89b5a4b945 Mon Sep 17 00:00:00 2001
---
case_product.ML | 26 ++++++++++++++++++--------
1 files changed, 18 insertions(+), 8 deletions(-)
* * *
[PATCH 8/9] Remove dependency on consumes attribute

From e2a4de044481586d6127bbabd0ef48d0e3ab57c0 Mon Sep 17 00:00:00 2001
---
case_product.ML | 46 ++++++++++++++++++++++------------------------
1 files changed, 22 insertions(+), 24 deletions(-)
* * *
[PATCH 9/9] whitespace

From 59f5036bd8f825da4a362970292a34ec06c0f1a2 Mon Sep 17 00:00:00 2001
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case_product.ML | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

%
\begin{isabellebody}%
\def\isabellecontext{prime{\isaliteral{5F}{\isacharunderscore}}def}%
%
\isadelimtheory
%
\endisadelimtheory
%
\isatagtheory
%
\endisatagtheory
{\isafoldtheory}%
%
\isadelimtheory
%
\endisadelimtheory
%
\begin{isamarkuptext}%
\begin{warn}
A common mistake when writing definitions is to introduce extra free
variables on the right-hand side.  Consider the following, flawed definition
(where \isa{dvd} means ``divides''):
\begin{isabelle}%
\ \ \ \ \ {\isaliteral{22}{\isachardoublequote}}prime\ p\ {\isaliteral{5C3C65717569763E}{\isasymequiv}}\ {\isadigit{1}}\ {\isaliteral{3C}{\isacharless}}\ p\ {\isaliteral{5C3C616E643E}{\isasymand}}\ {\isaliteral{28}{\isacharparenleft}}m\ dvd\ p\ {\isaliteral{5C3C6C6F6E6772696768746172726F773E}{\isasymlongrightarrow}}\ m\ {\isaliteral{3D}{\isacharequal}}\ {\isadigit{1}}\ {\isaliteral{5C3C6F723E}{\isasymor}}\ m\ {\isaliteral{3D}{\isacharequal}}\ p{\isaliteral{29}{\isacharparenright}}{\isaliteral{22}{\isachardoublequote}}%
\end{isabelle}
\par\noindent\hangindent=0pt
Isabelle rejects this ``definition'' because of the extra \isa{m} on the
right-hand side, which would introduce an inconsistency (why?). 
The correct version is
\begin{isabelle}%
\ \ \ \ \ {\isaliteral{22}{\isachardoublequote}}prime\ p\ {\isaliteral{5C3C65717569763E}{\isasymequiv}}\ {\isadigit{1}}\ {\isaliteral{3C}{\isacharless}}\ p\ {\isaliteral{5C3C616E643E}{\isasymand}}\ {\isaliteral{28}{\isacharparenleft}}{\isaliteral{5C3C666F72616C6C3E}{\isasymforall}}m{\isaliteral{2E}{\isachardot}}\ m\ dvd\ p\ {\isaliteral{5C3C6C6F6E6772696768746172726F773E}{\isasymlongrightarrow}}\ m\ {\isaliteral{3D}{\isacharequal}}\ {\isadigit{1}}\ {\isaliteral{5C3C6F723E}{\isasymor}}\ m\ {\isaliteral{3D}{\isacharequal}}\ p{\isaliteral{29}{\isacharparenright}}{\isaliteral{22}{\isachardoublequote}}%
\end{isabelle}
\end{warn}%
\end{isamarkuptext}%
\isamarkuptrue%
%
\isadelimtheory
%
\endisadelimtheory
%
\isatagtheory
%
\endisatagtheory
{\isafoldtheory}%
%
\isadelimtheory
%
\endisadelimtheory
\end{isabellebody}%
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