NEWS
author wenzelm
Fri, 13 Jun 2008 21:04:07 +0200
changeset 27191 0fe5b95797da
parent 27145 0337828b7815
child 27200 00b7b55b61bd
permissions -rw-r--r--
* Recovered hiding of consts;
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Isabelle NEWS -- history user-relevant changes
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==============================================
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New in this Isabelle version
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----------------------------
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*** Pure ***
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* Recovered hiding of consts, which was accidentally broken in
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Isabelle2007.  Potential INCOMPATIBILITY, ``hide const c'' really
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makes c inaccessible; consider using ``hide (open) const c'' instead.
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* Command 'instance': attached definitions now longer accepted.
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INCOMPATIBILITY, use proper 'instantiation' target.
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* Keyword 'code_exception' now named 'code_abort'.  INCOMPATIBILITY.
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*** HOL ***
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* Methods "case_tac" and "induct_tac" now refer to the very same rule
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declarations as the structured Isar versions "cases" and "induct", cf.
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the corresponding "cases" and "induct" attributes.  INCOMPATIBILITY,
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in rare situations a different rule is selected --- notably nested
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tuple elimination instead of former prod.exhaust: use explicit
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(case_tac t rule: prod.exhaust) here.  Old-style rules for mutual and
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nested datatypes also need to be given explicitly.
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* Attributes "cases", "induct", "coinduct" support "del" option.
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* Removed fact "case_split_thm", which duplicates "case_split".
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* Command 'rep_datatype': instead of theorem names the command now
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takes a list of terms denoting the constructors of the type to be
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represented as datatype.  The characteristic theorems have to be
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proven.  INCOMPATIBILITY.  Also observe that the following theorems
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have disappeared in favour of existing ones:
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    unit_induct                 ~> unit.induct
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    prod_induct                 ~> prod.induct
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    sum_induct                  ~> sum.induct
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    Suc_Suc_eq                  ~> nat.inject
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    Suc_not_Zero Zero_not_Suc   ~> nat.distinct
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* 'Least' operator now restricted to class 'order' (and subclasses).
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INCOMPATIBILITY.
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* Library/Nat_Infinity: added addition, numeral syntax and more
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instantiations for algebraic structures.  Removed some duplicate
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theorems.  Changes in simp rules.  INCOMPATIBILITY.
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New in Isabelle2008 (June 2008)
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-------------------------------
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*** General ***
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* The Isabelle/Isar Reference Manual (isar-ref) has been reorganized
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and updated, with formally checked references as hyperlinks.
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* Theory loader: use_thy (and similar operations) no longer set the
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implicit ML context, which was occasionally hard to predict and in
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conflict with concurrency.  INCOMPATIBILITY, use ML within Isar which
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provides a proper context already.
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* Theory loader: old-style ML proof scripts being *attached* to a thy
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file are no longer supported.  INCOMPATIBILITY, regular 'uses' and
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'use' within a theory file will do the job.
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* Name space merge now observes canonical order, i.e. the second space
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is inserted into the first one, while existing entries in the first
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space take precedence.  INCOMPATIBILITY in rare situations, may try to
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swap theory imports.
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* Syntax: symbol \<chi> is now considered a letter.  Potential
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INCOMPATIBILITY in identifier syntax etc.
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* Outer syntax: string tokens no longer admit escaped white space,
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which was an accidental (undocumented) feature.  INCOMPATIBILITY, use
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white space without escapes.
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* Outer syntax: string tokens may contain arbitrary character codes
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specified via 3 decimal digits (as in SML).  E.g. "foo\095bar" for
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"foo_bar".
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*** Pure ***
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* Context-dependent token translations.  Default setup reverts locally
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fixed variables, and adds hilite markup for undeclared frees.
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* Unused theorems can be found using the new command 'unused_thms'.
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There are three ways of invoking it:
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(1) unused_thms
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     Only finds unused theorems in the current theory.
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(2) unused_thms thy_1 ... thy_n -
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     Finds unused theorems in the current theory and all of its ancestors,
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     excluding the theories thy_1 ... thy_n and all of their ancestors.
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(3) unused_thms thy_1 ... thy_n - thy'_1 ... thy'_m
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     Finds unused theorems in the theories thy'_1 ... thy'_m and all of
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     their ancestors, excluding the theories thy_1 ... thy_n and all of
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     their ancestors.
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In order to increase the readability of the list produced by
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unused_thms, theorems that have been created by a particular instance
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of a theory command such as 'inductive' or 'function' are considered
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to belong to the same "group", meaning that if at least one theorem in
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this group is used, the other theorems in the same group are no longer
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reported as unused.  Moreover, if all theorems in the group are
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unused, only one theorem in the group is displayed.
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Note that proof objects have to be switched on in order for
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unused_thms to work properly (i.e. !proofs must be >= 1, which is
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usually the case when using Proof General with the default settings).
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* Authentic naming of facts disallows ad-hoc overwriting of previous
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theorems within the same name space.  INCOMPATIBILITY, need to remove
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duplicate fact bindings, or even accidental fact duplications.  Note
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that tools may maintain dynamically scoped facts systematically, using
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PureThy.add_thms_dynamic.
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* Command 'hide' now allows to hide from "fact" name space as well.
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* Eliminated destructive theorem database, simpset, claset, and
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clasimpset.  Potential INCOMPATIBILITY, really need to observe linear
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update of theories within ML code.
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* Eliminated theory ProtoPure and CPure, leaving just one Pure theory.
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INCOMPATIBILITY, object-logics depending on former Pure require
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additional setup PureThy.old_appl_syntax_setup; object-logics
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depending on former CPure need to refer to Pure.
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* Commands 'use' and 'ML' are now purely functional, operating on
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theory/local_theory.  Removed former 'ML_setup' (on theory), use 'ML'
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instead.  Added 'ML_val' as mere diagnostic replacement for 'ML'.
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INCOMPATIBILITY.
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* Command 'setup': discontinued implicit version with ML reference.
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* Instantiation target allows for simultaneous specification of class
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instance operations together with an instantiation proof.
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Type-checking phase allows to refer to class operations uniformly.
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See src/HOL/Complex/Complex.thy for an Isar example and
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src/HOL/Library/Eval.thy for an ML example.
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* Indexing of literal facts: be more serious about including only
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facts from the visible specification/proof context, but not the
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background context (locale etc.).  Affects `prop` notation and method
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"fact".  INCOMPATIBILITY: need to name facts explicitly in rare
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situations.
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* Method "cases", "induct", "coinduct": removed obsolete/undocumented
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"(open)" option, which used to expose internal bound variables to the
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proof text.
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ce964f0df281 * Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
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* Isar statements: removed obsolete case "rule_context".
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INCOMPATIBILITY, better use explicit fixes/assumes.
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* Locale proofs: default proof step now includes 'unfold_locales';
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hence 'proof' without argument may be used to unfold locale
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predicates.
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*** Document preparation ***
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* Simplified pdfsetup.sty: color/hyperref is used unconditionally for
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both pdf and dvi (hyperlinks usually work in xdvi as well); removed
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obsolete thumbpdf setup (contemporary PDF viewers do this on the
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spot); renamed link color from "darkblue" to "linkcolor" (default
26920
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value unchanged, can be redefined via \definecolor); no longer sets
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"a4paper" option (unnecessary or even intrusive).
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* Antiquotation @{lemma A method} proves proposition A by the given
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method (either a method name or a method name plus (optional) method
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arguments in parentheses) and prints A just like @{prop A}.
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*** HOL ***
0ca80ce89001 moved new NEWS from Isabelle2007 to this Isabelle version'';
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* New primrec package.  Specification syntax conforms in style to
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definition/function/....  No separate induction rule is provided.  The
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"primrec" command distinguishes old-style and new-style specifications
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by syntax.  The former primrec package is now named OldPrimrecPackage.
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When adjusting theories, beware: constants stemming from new-style
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primrec specifications have authentic syntax.
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* Metis prover is now an order of magnitude faster, and also works
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with multithreading.
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* Metis: the maximum number of clauses that can be produced from a
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theorem is now given by the attribute max_clauses.  Theorems that
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exceed this number are ignored, with a warning printed.
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* Sledgehammer no longer produces structured proofs by default. To
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enable, declare [[sledgehammer_full = true]].  Attributes
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reconstruction_modulus, reconstruction_sorts renamed
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sledgehammer_modulus, sledgehammer_sorts.  INCOMPATIBILITY.
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   202
27104
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* Method "induct_scheme" derives user-specified induction rules
27067
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from well-founded induction and completeness of patterns. This factors
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out some operations that are done internally by the function package
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   206
and makes them available separately.  See
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   207
src/HOL/ex/Induction_Scheme.thy for examples.
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* More flexible generation of measure functions for termination
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proofs: Measure functions can be declared by proving a rule of the
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form "is_measure f" and giving it the [measure_function] attribute.
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The "is_measure" predicate is logically meaningless (always true), and
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just guides the heuristic.  To find suitable measure functions, the
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termination prover sets up the goal "is_measure ?f" of the appropriate
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   215
type and generates all solutions by prolog-style backwards proof using
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   216
the declared rules.
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   217
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This setup also deals with rules like 
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  "is_measure f ==> is_measure (list_size f)"
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   221
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   222
which accommodates nested datatypes that recurse through lists.
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Similar rules are predeclared for products and option types.
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* Turned the type of sets "'a set" into an abbreviation for "'a => bool"
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  INCOMPATIBILITIES:
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  - Definitions of overloaded constants on sets have to be replaced by
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    definitions on => and bool.
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  - Some definitions of overloaded operators on sets can now be proved
27008
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    using the definitions of the operators on => and bool.  Therefore,
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    the following theorems have been renamed:
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   236
      subset_def   -> subset_eq
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      psubset_def  -> psubset_eq
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      set_diff_def -> set_diff_eq
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   239
      Compl_def    -> Compl_eq
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      Sup_set_def  -> Sup_set_eq
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      Inf_set_def  -> Inf_set_eq
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      sup_set_def  -> sup_set_eq
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      inf_set_def  -> inf_set_eq
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   245
  - Due to the incompleteness of the HO unification algorithm, some
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   246
    rules such as subst may require manual instantiation, if some of
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   247
    the unknowns in the rule is a set.
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   248
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   249
  - Higher order unification and forward proofs:
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   250
    The proof pattern
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   251
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   252
      have "P (S::'a set)" <...>
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   253
      then have "EX S. P S" ..
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   254
27008
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   255
    no longer works (due to the incompleteness of the HO unification
9e39f5403db7 misc tuning for Isabelle2008;
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   256
    algorithm) and must be replaced by the pattern
26964
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   257
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   258
      have "EX S. P S"
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   259
      proof
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   260
        show "P S" <...>
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   261
      qed
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   262
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   263
  - Calculational reasoning with subst (or similar rules):
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   264
    The proof pattern
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   265
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   266
      have "P (S::'a set)" <...>
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   267
      also have "S = T" <...>
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   268
      finally have "P T" .
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   269
27008
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   270
    no longer works (for similar reasons as the previous example) and
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   271
    must be replaced by something like
26964
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   272
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   273
      have "P (S::'a set)" <...>
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   274
      moreover have "S = T" <...>
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   275
      ultimately have "P T" by simp
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   276
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   277
  - Tactics or packages written in ML code:
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   278
    Code performing pattern matching on types via
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   279
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   280
      Type ("set", [T]) => ...
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   281
27008
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   282
    must be rewritten. Moreover, functions like strip_type or
9e39f5403db7 misc tuning for Isabelle2008;
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   283
    binder_types no longer return the right value when applied to a
9e39f5403db7 misc tuning for Isabelle2008;
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   284
    type of the form
26964
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   285
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   286
      T1 => ... => Tn => U => bool
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   287
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   288
    rather than
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   289
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   290
      T1 => ... => Tn => U set
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   291
26874
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   292
* Merged theories Wellfounded_Recursion, Accessible_Part and
27067
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   293
Wellfounded_Relations to theory Wellfounded.
26748
4d51ddd6aa5c Merged theories about wellfoundedness into one: Wellfounded.thy
krauss
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diff changeset
   294
26513
6f306c8c2c54 explicit class "eq" for operational equality
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   295
* Explicit class "eq" for executable equality.  INCOMPATIBILITY.
6f306c8c2c54 explicit class "eq" for operational equality
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   296
26874
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   297
* Class finite no longer treats UNIV as class parameter.  Use class
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   298
enum from theory Library/Enum instead to achieve a similar effect.
26445
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   299
INCOMPATIBILITY.
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   300
26874
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   301
* Theory List: rule list_induct2 now has explicitly named cases "Nil"
b2daa27fc0a7 misc tuning;
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   302
and "Cons".  INCOMPATIBILITY.
b2daa27fc0a7 misc tuning;
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diff changeset
   303
26422
d5883907c514 HOL (and FOL): renamed variables in rules imp_elim and swap;
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   304
* HOL (and FOL): renamed variables in rules imp_elim and swap.
d5883907c514 HOL (and FOL): renamed variables in rules imp_elim and swap;
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   305
Potential INCOMPATIBILITY.
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wenzelm
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diff changeset
   306
26874
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   307
* Theory Product_Type: duplicated lemmas split_Pair_apply and
b2daa27fc0a7 misc tuning;
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diff changeset
   308
injective_fst_snd removed, use split_eta and prod_eqI instead.
b2daa27fc0a7 misc tuning;
wenzelm
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diff changeset
   309
Renamed upd_fst to apfst and upd_snd to apsnd.  INCOMPATIBILITY.
26355
9276633fdc24 Theory Product_Type; fixed typos
haftmann
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   310
26335
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
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   311
* Theory Nat: removed redundant lemmas that merely duplicate lemmas of
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
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diff changeset
   312
the same name in theory Orderings:
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   313
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
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   314
  less_trans
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wenzelm
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   315
  less_linear
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wenzelm
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   316
  le_imp_less_or_eq
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   317
  le_less_trans
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   318
  less_le_trans
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   319
  less_not_sym
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   320
  less_asym
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   321
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   322
Renamed less_imp_le to less_imp_le_nat, and less_irrefl to
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   323
less_irrefl_nat.  Potential INCOMPATIBILITY due to more general types
961bbcc9d85b removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents: 26333
diff changeset
   324
and different variable names.
26315
cb3badaa192e removed redundant less_trans, less_linear, le_imp_less_or_eq, le_less_trans, less_le_trans (cf. Orderings.thy);
wenzelm
parents: 26231
diff changeset
   325
26231
cd9d7f449369 added entries
haftmann
parents: 26222
diff changeset
   326
* Library/Option_ord.thy: Canonical order on option type.
cd9d7f449369 added entries
haftmann
parents: 26222
diff changeset
   327
27008
9e39f5403db7 misc tuning for Isabelle2008;
wenzelm
parents: 26964
diff changeset
   328
* Library/RBT.thy: Red-black trees, an efficient implementation of
9e39f5403db7 misc tuning for Isabelle2008;
wenzelm
parents: 26964
diff changeset
   329
finite maps.
26197
46e63f49c946 NEWS: RBTs, renamings in ZF
krauss
parents: 26188
diff changeset
   330
26231
cd9d7f449369 added entries
haftmann
parents: 26222
diff changeset
   331
* Library/Countable.thy: Type class for countable types.
cd9d7f449369 added entries
haftmann
parents: 26222
diff changeset
   332
26180
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   333
* Theory Int: The representation of numerals has changed.  The infix
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   334
operator BIT and the bit datatype with constructors B0 and B1 have
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   335
disappeared.  INCOMPATIBILITY, use "Int.Bit0 x" and "Int.Bit1 y" in
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   336
place of "x BIT bit.B0" and "y BIT bit.B1", respectively.  Theorems
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   337
involving BIT, B0, or B1 have been renamed with "Bit0" or "Bit1"
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   338
accordingly.
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   339
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   340
* Theory Nat: definition of <= and < on natural numbers no longer
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   341
depend on well-founded relations.  INCOMPATIBILITY.  Definitions
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   342
le_def and less_def have disappeared.  Consider lemmas not_less
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   343
[symmetric, where ?'a = nat] and less_eq [symmetric] instead.
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   344
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   345
* Theory Finite_Set: locales ACf, ACe, ACIf, ACIfSL and ACIfSLlin
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   346
(whose purpose mainly is for various fold_set functionals) have been
26874
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   347
abandoned in favor of the existing algebraic classes
26180
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   348
ab_semigroup_mult, comm_monoid_mult, ab_semigroup_idem_mult,
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   349
lower_semilattice (resp. upper_semilattice) and linorder.
26139
f7823a676ef7 added accidental omissions
haftmann
parents: 26086
diff changeset
   350
INCOMPATIBILITY.
26041
c2e15e65165f locales ACf, ACIf, ACIfSL and ACIfSLlin have been abandoned in favour of the existing algebraic classes ab_semigroup_mult, ab_semigroup_idem_mult, lower_semilattice (resp. uper_semilattice) and linorder
haftmann
parents: 26013
diff changeset
   351
26180
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   352
* Theory Transitive_Closure: induct and cases rules now declare proper
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   353
case_names ("base" and "step").  INCOMPATIBILITY.
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   354
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   355
* Theorem Inductive.lfp_ordinal_induct generalized to complete
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   356
lattices.  The form set-specific version is available as
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   357
Inductive.lfp_ordinal_induct_set.
26013
8764a1f1253b Theorem Inductive.lfp_ordinal_induct generalized to complete lattices
haftmann
parents: 26006
diff changeset
   358
26874
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   359
* Renamed theorems "power.simps" to "power_int.simps".
27067
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   360
INCOMPATIBILITY.
25961
ec39d7e40554 moved definition of power on ints to theory Int
haftmann
parents: 25942
diff changeset
   361
26180
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   362
* Class semiring_div provides basic abstract properties of semirings
25942
a52309ac4a4d added class semiring_div
haftmann
parents: 25919
diff changeset
   363
with division and modulo operations.  Subsumes former class dvd_mod.
a52309ac4a4d added class semiring_div
haftmann
parents: 25919
diff changeset
   364
26180
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   365
* Merged theories IntDef, Numeral and IntArith into unified theory
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   366
Int.  INCOMPATIBILITY.
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   367
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   368
* Theory Library/Code_Index: type "index" now represents natural
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   369
numbers rather than integers.  INCOMPATIBILITY.
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   370
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   371
* New class "uminus" with operation "uminus" (split of from class
cc85eaab20f6 Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents: 26139
diff changeset
   372
"minus" which now only has operation "minus", binary).
25919
8b1c0d434824 joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents: 25900
diff changeset
   373
INCOMPATIBILITY.
8b1c0d434824 joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents: 25900
diff changeset
   374
25522
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   375
* Constants "card", "internal_split", "option_map" now with authentic
25919
8b1c0d434824 joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents: 25900
diff changeset
   376
syntax.  INCOMPATIBILITY.
25522
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   377
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   378
* Definitions subset_def, psubset_def, set_diff_def, Compl_def,
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   379
le_bool_def, less_bool_def, le_fun_def, less_fun_def, inf_bool_def,
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   380
sup_bool_def, Inf_bool_def, Sup_bool_def, inf_fun_def, sup_fun_def,
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   381
Inf_fun_def, Sup_fun_def, inf_set_def, sup_set_def, Inf_set_def,
26851f8bdf14 \<chi> is now considered a letter;
wenzelm
parents: 25510
diff changeset
   382
Sup_set_def, le_def, less_def, option_map_def now with object
25919
8b1c0d434824 joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents: 25900
diff changeset
   383
equality.  INCOMPATIBILITY.
25464
0ca80ce89001 moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents: 25459
diff changeset
   384
25705
45a2ffc5911e replaced K_record by lambda term %x. c
schirmer
parents: 25664
diff changeset
   385
* Records. Removed K_record, and replaced it by pure lambda term
25726
9728f319ffc6 * Metis prover an order of magnitude faster, works with multithreading.
wenzelm
parents: 25712
diff changeset
   386
%x. c. The simplifier setup is now more robust against eta expansion.
25705
45a2ffc5911e replaced K_record by lambda term %x. c
schirmer
parents: 25664
diff changeset
   387
INCOMPATIBILITY: in cases explicitly referring to K_record.
25464
0ca80ce89001 moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents: 25459
diff changeset
   388
27067
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   389
* Library/Multiset: {#a, b, c#} abbreviates {#a#} + {#b#} + {#c#}.
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   390
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   391
* Library/ListVector: new theory of arithmetic vector operations.
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   392
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   393
* Library/Order_Relation: new theory of various orderings as sets of
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   394
pairs.  Defines preorders, partial orders, linear orders and
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   395
well-orders on sets and on types.
26877
c3bb1f397811 NEWS about measure functions
krauss
parents: 26874
diff changeset
   396
25726
9728f319ffc6 * Metis prover an order of magnitude faster, works with multithreading.
wenzelm
parents: 25712
diff changeset
   397
26197
46e63f49c946 NEWS: RBTs, renamings in ZF
krauss
parents: 26188
diff changeset
   398
*** ZF ***
46e63f49c946 NEWS: RBTs, renamings in ZF
krauss
parents: 26188
diff changeset
   399
26874
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   400
* Renamed some theories to allow to loading both ZF and HOL in the
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   401
same session:
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   402
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   403
  Datatype  -> Datatype_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   404
  Inductive -> Inductive_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   405
  Int       -> Int_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   406
  IntDiv    -> IntDiv_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   407
  Nat       -> Nat_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   408
  List      -> List_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   409
  Main      -> Main_ZF
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   410
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   411
INCOMPATIBILITY: ZF theories that import individual theories below
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   412
Main might need to be adapted.  Regular theory Main is still
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   413
available, as trivial extension of Main_ZF.
26197
46e63f49c946 NEWS: RBTs, renamings in ZF
krauss
parents: 26188
diff changeset
   414
46e63f49c946 NEWS: RBTs, renamings in ZF
krauss
parents: 26188
diff changeset
   415
25737
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   416
*** ML ***
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   417
27067
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   418
* ML within Isar: antiquotation @{const name} or @{const
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   419
name(typargs)} produces statically-checked Const term.
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   420
26401
e7a94081dce7 Functor NamedThmsFun: data is available to the user as dynamic fact;
wenzelm
parents: 26387
diff changeset
   421
* Functor NamedThmsFun: data is available to the user as dynamic fact
26724
ff6ff3a9010e NamedThmsFun: removed obsolete print command -- facts are accesible via dynamic name;
wenzelm
parents: 26718
diff changeset
   422
(of the same name).  Removed obsolete print command.
26401
e7a94081dce7 Functor NamedThmsFun: data is available to the user as dynamic fact;
wenzelm
parents: 26387
diff changeset
   423
27067
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   424
* Removed obsolete "use_legacy_bindings" function.
26188
9cb1b484fe96 added @{const} antiquotation;
wenzelm
parents: 26180
diff changeset
   425
25737
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   426
* The ``print mode'' is now a thread-local value derived from a global
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   427
template (the former print_mode reference), thus access becomes
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   428
non-critical.  The global print_mode reference is for session
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   429
management only; user-code should use print_mode_value,
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   430
print_mode_active, PrintMode.setmp etc.  INCOMPATIBILITY.
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   431
26874
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   432
* Functions system/system_out provide a robust way to invoke external
27008
9e39f5403db7 misc tuning for Isabelle2008;
wenzelm
parents: 26964
diff changeset
   433
shell commands, with propagation of interrupts (requires Poly/ML 5.2).
26874
b2daa27fc0a7 misc tuning;
wenzelm
parents: 26765
diff changeset
   434
Do not use OS.Process.system etc. from the basis library!
26222
edf6473ac9e9 * system/system_out provides a robust way to invoke external shell
wenzelm
parents: 26218
diff changeset
   435
25737
84c92fc48e36 ``print mode'' is now a thread-local value derived from a global template;
wenzelm
parents: 25726
diff changeset
   436
25626
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   437
*** System ***
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   438
25971
wenzelm
parents: 25970
diff changeset
   439
* Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs ---
wenzelm
parents: 25970
diff changeset
   440
in accordance with Proof General 3.7, which prefers GNU emacs.
25970
9053fd546501 * Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs here;
wenzelm
parents: 25961
diff changeset
   441
25626
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   442
* isatool tty runs Isabelle process with plain tty interaction;
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   443
optional line editor may be specified via ISABELLE_LINE_EDITOR
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   444
setting, the default settings attempt to locate "ledit" and "rlwrap".
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   445
25651
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   446
* isatool browser now works with Cygwin as well, using general
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   447
"javapath" function defined in Isabelle process environment.
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   448
27067
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   449
* YXML notation provides a simple and efficient alternative to
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   450
standard XML transfer syntax.  See src/Pure/General/yxml.ML and
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   451
isatool yxml as described in the Isabelle system manual.
25651
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   452
25652
wenzelm
parents: 25651
diff changeset
   453
* JVM class isabelle.IsabelleProcess (located in Isabelle/lib/classes)
25651
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   454
provides general wrapper for managing an Isabelle process in a robust
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   455
fashion, with ``cooked'' output from stdin/stderr.
6b2eb4e70ae3 * isatool browser now works with Cygwin;
wenzelm
parents: 25626
diff changeset
   456
25855
3aa0d86b4398 * Rudimentary Isabelle plugin for jEdit;
wenzelm
parents: 25778
diff changeset
   457
* Rudimentary Isabelle plugin for jEdit (see Isabelle/lib/jedit),
3aa0d86b4398 * Rudimentary Isabelle plugin for jEdit;
wenzelm
parents: 25778
diff changeset
   458
based on Isabelle/JVM process wrapper (see Isabelle/lib/classes).
3aa0d86b4398 * Rudimentary Isabelle plugin for jEdit;
wenzelm
parents: 25778
diff changeset
   459
27067
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   460
* Removed obsolete THIS_IS_ISABELLE_BUILD feature.  NB: the documented
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   461
way of changing the user's settings is via
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   462
ISABELLE_HOME_USER/etc/settings, which is a fully featured bash
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   463
script.
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   464
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   465
* Multithreading.max_threads := 0 refers to the number of actual CPU
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   466
cores of the underlying machine, which is a good starting point for
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   467
optimal performance tuning.  The corresponding usedir option -M allows
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   468
"max" as an alias for "0".  WARNING: does not work on certain versions
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   469
of Mac OS (with Poly/ML 5.1).
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   470
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   471
* isabelle-process: non-ML sessions are run with "nice", to reduce the
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   472
adverse effect of Isabelle flooding interactive front-ends (notably
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   473
ProofGeneral / XEmacs).
f8a7aff41acb some reorganization and fine-tuning;
wenzelm
parents: 27061
diff changeset
   474
25626
3000965b1fdf * isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents: 25609
diff changeset
   475
25464
0ca80ce89001 moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents: 25459
diff changeset
   476
25429
wenzelm
parents: 25409
diff changeset
   477
New in Isabelle2007 (November 2007)
wenzelm
parents: 25409
diff changeset
   478
-----------------------------------
17754
58a306d9f736 * Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents: 17725
diff changeset
   479
58a306d9f736 * Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents: 17725
diff changeset
   480
*** General ***
58a306d9f736 * Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents: 17725
diff changeset
   481
22826
0f4c501a691e explicit treatment of legacy_features;
wenzelm
parents: 22799
diff changeset
   482
* More uniform information about legacy features, notably a
0f4c501a691e explicit treatment of legacy_features;
wenzelm
parents: 22799
diff changeset
   483
warning/error of "Legacy feature: ...", depending on the state of the
23367
wenzelm
parents: 23300
diff changeset
   484
tolerate_legacy_features flag (default true). FUTURE INCOMPATIBILITY:
wenzelm
parents: 23300
diff changeset
   485
legacy features will disappear eventually.
22826
0f4c501a691e explicit treatment of legacy_features;
wenzelm
parents: 22799
diff changeset
   486
17918
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   487
* Theory syntax: the header format ``theory A = B + C:'' has been
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   488
discontinued in favour of ``theory A imports B C begin''.  Use isatool
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   489
fixheaders to convert existing theory files.  INCOMPATIBILITY.
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   490
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   491
* Theory syntax: the old non-Isar theory file format has been
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   492
discontinued altogether.  Note that ML proof scripts may still be used
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   493
with Isar theories; migration is usually quite simple with the ML
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   494
function use_legacy_bindings.  INCOMPATIBILITY.
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   495
22871
wenzelm
parents: 22863
diff changeset
   496
* Theory syntax: some popular names (e.g. 'class', 'declaration',
wenzelm
parents: 22863
diff changeset
   497
'fun', 'help', 'if') are now keywords.  INCOMPATIBILITY, use double
wenzelm
parents: 22863
diff changeset
   498
quotes.
19814
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents: 19783
diff changeset
   499
23888
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   500
* Theory loader: be more serious about observing the static theory
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   501
header specifications (including optional directories), but not the
24172
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   502
accidental file locations of previously successful loads.  The strict
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   503
update policy of former update_thy is now already performed by
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   504
use_thy, so the former has been removed; use_thys updates several
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   505
theories simultaneously, just as 'imports' within a theory header
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   506
specification, but without merging the results.  Potential
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   507
INCOMPATIBILITY: may need to refine theory headers and commands
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   508
ROOT.ML which depend on load order.
23888
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   509
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   510
* Theory loader: optional support for content-based file
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   511
identification, instead of the traditional scheme of full physical
23889
wenzelm
parents: 23888
diff changeset
   512
path plus date stamp; configured by the ISABELLE_FILE_IDENT setting
23888
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   513
(cf. the system manual).  The new scheme allows to work with
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   514
non-finished theories in persistent session images, such that source
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   515
files may be moved later on without requiring reloads.
babe337cce2d * Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents: 23881
diff changeset
   516
24187
8bdf5ca5871f * Theory loader: old-style ML proof scripts are considered a legacy feature;
wenzelm
parents: 24172
diff changeset
   517
* Theory loader: old-style ML proof scripts being *attached* to a thy
8bdf5ca5871f * Theory loader: old-style ML proof scripts are considered a legacy feature;
wenzelm
parents: 24172
diff changeset
   518
file (with the same base name as the theory) are considered a legacy
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   519
feature, which will disappear eventually. Even now, the theory loader
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   520
no longer maintains dependencies on such files.
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   521
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   522
* Syntax: the scope for resolving ambiguities via type-inference is
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   523
now limited to individual terms, instead of whole simultaneous
24234
4714e04fb8e9 * Syntax: scope for resolving ambiguities via type-inference is now limited to individual terms;
wenzelm
parents: 24213
diff changeset
   524
specifications as before. This greatly reduces the complexity of the
4714e04fb8e9 * Syntax: scope for resolving ambiguities via type-inference is now limited to individual terms;
wenzelm
parents: 24213
diff changeset
   525
syntax module and improves flexibility by separating parsing and
4714e04fb8e9 * Syntax: scope for resolving ambiguities via type-inference is now limited to individual terms;
wenzelm
parents: 24213
diff changeset
   526
type-checking. INCOMPATIBILITY: additional type-constraints (explicit
4714e04fb8e9 * Syntax: scope for resolving ambiguities via type-inference is now limited to individual terms;
wenzelm
parents: 24213
diff changeset
   527
'fixes' etc.) are required in rare situations.
4714e04fb8e9 * Syntax: scope for resolving ambiguities via type-inference is now limited to individual terms;
wenzelm
parents: 24213
diff changeset
   528
25034
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   529
* Syntax: constants introduced by new-style packages ('definition',
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   530
'abbreviation' etc.) are passed through the syntax module in
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   531
``authentic mode''. This means that associated mixfix annotations
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   532
really stick to such constants, independently of potential name space
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   533
ambiguities introduced later on. INCOMPATIBILITY: constants in parse
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   534
trees are represented slightly differently, may need to adapt syntax
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   535
translations accordingly. Use CONST marker in 'translations' and
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   536
@{const_syntax} antiquotation in 'parse_translation' etc.
7f2e1a8e181b more on authentic syntax;
wenzelm
parents: 25033
diff changeset
   537
17981
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   538
* Legacy goal package: reduced interface to the bare minimum required
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   539
to keep existing proof scripts running.  Most other user-level
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   540
functions are now part of the OldGoals structure, which is *not* open
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   541
by default (consider isatool expandshort before open OldGoals).
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   542
Removed top_sg, prin, printyp, pprint_term/typ altogether, because
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   543
these tend to cause confusion about the actual goal (!) context being
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   544
used here, which is not necessarily the same as the_context().
17918
93e26302733e * Theory syntax: discontinued non-Isar format and old Isar headers;
wenzelm
parents: 17890
diff changeset
   545
23379
d0e3f790bd73 updated 'find_theorems' -- moved ProofGeneral specifics to ProofGeneral/CHANGES;
wenzelm
parents: 23377
diff changeset
   546
* Command 'find_theorems': supports "*" wild-card in "name:"
d0e3f790bd73 updated 'find_theorems' -- moved ProofGeneral specifics to ProofGeneral/CHANGES;
wenzelm
parents: 23377
diff changeset
   547
criterion; "with_dups" option.  Certain ProofGeneral versions might
d0e3f790bd73 updated 'find_theorems' -- moved ProofGeneral specifics to ProofGeneral/CHANGES;
wenzelm
parents: 23377
diff changeset
   548
support a specific search form (see ProofGeneral/CHANGES).
22965
b81bbe298406 ProofGeneral: Find Theorems search form
webertj
parents: 22921
diff changeset
   549
20370
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   550
* The ``prems limit'' option (cf. ProofContext.prems_limit) is now -1
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   551
by default, which means that "prems" (and also "fixed variables") are
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   552
suppressed from proof state output.  Note that the ProofGeneral
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   553
settings mechanism allows to change and save options persistently, but
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   554
older versions of Isabelle will fail to start up if a negative prems
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   555
limit is imposed.
217aada4f795 * ProofContext.prems_limit is now -1 by default;
wenzelm
parents: 20348
diff changeset
   556
21308
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   557
* Local theory targets may be specified by non-nested blocks of
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   558
``context/locale/class ... begin'' followed by ``end''.  The body may
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   559
contain definitions, theorems etc., including any derived mechanism
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   560
that has been implemented on top of these primitives.  This concept
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   561
generalizes the existing ``theorem (in ...)'' towards more versatility
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   562
and scalability.
73883a528b26 * Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents: 21265
diff changeset
   563
21960
0574f192b78a * Proof General: proper undo of final 'end'; discontinued Isabelle/classic;
wenzelm
parents: 21896
diff changeset
   564
* Proof General interface: proper undo of final 'end' command;
0574f192b78a * Proof General: proper undo of final 'end'; discontinued Isabelle/classic;
wenzelm
parents: 21896
diff changeset
   565
discontinued Isabelle/classic mode (ML proof scripts).
0574f192b78a * Proof General: proper undo of final 'end'; discontinued Isabelle/classic;
wenzelm
parents: 21896
diff changeset
   566
17754
58a306d9f736 * Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents: 17725
diff changeset
   567
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   568
*** Document preparation ***
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   569
21717
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   570
* Added antiquotation @{theory name} which prints the given name,
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   571
after checking that it refers to a valid ancestor theory in the
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   572
current context.
21339
b59f7cca0b0c added antiquotation theory
haftmann
parents: 21320
diff changeset
   573
17869
wenzelm
parents: 17865
diff changeset
   574
* Added antiquotations @{ML_type text} and @{ML_struct text} which
wenzelm
parents: 17865
diff changeset
   575
check the given source text as ML type/structure, printing verbatim.
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   576
21717
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   577
* Added antiquotation @{abbrev "c args"} which prints the abbreviation
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   578
"c args == rhs" given in the current context.  (Any number of
21735
0c65e072f4be added print_abbrevs;
wenzelm
parents: 21717
diff changeset
   579
arguments may be given on the LHS.)
21717
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   580
410ca6910f6f added antiquotation abbrev;
wenzelm
parents: 21647
diff changeset
   581
17779
407bea05c2da added dummy variable binding;
wenzelm
parents: 17754
diff changeset
   582
*** Pure ***
407bea05c2da added dummy variable binding;
wenzelm
parents: 17754
diff changeset
   583
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   584
* The 'class' package offers a combination of axclass and locale to
25129
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   585
achieve Haskell-like type classes in Isabelle.  Definitions and
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   586
theorems within a class context produce both relative results (with
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   587
implicit parameters according to the locale context), and polymorphic
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   588
constants with qualified polymorphism (according to the class
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   589
context).  Within the body context of a 'class' target, a separate
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   590
syntax layer ("user space type system") takes care of converting
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   591
between global polymorphic consts and internal locale representation.
25177
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   592
See src/HOL/ex/Classpackage.thy for examples (as well as main HOL).
25184
haftmann
parents: 25177
diff changeset
   593
"isatool doc classes" provides a tutorial.
20807
wenzelm
parents: 20716
diff changeset
   594
25199
haftmann
parents: 25198
diff changeset
   595
* Generic code generator framework allows to generate executable
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   596
code for ML and Haskell (including Isabelle classes).  A short usage
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   597
sketch:
20188
8b22026445af added notes on class_package.ML and codegen_package.ML
haftmann
parents: 20169
diff changeset
   598
8b22026445af added notes on class_package.ML and codegen_package.ML
haftmann
parents: 20169
diff changeset
   599
    internal compilation:
25199
haftmann
parents: 25198
diff changeset
   600
        export_code <list of constants (term syntax)> in SML
20453
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   601
    writing SML code to a file:
25199
haftmann
parents: 25198
diff changeset
   602
        export_code <list of constants (term syntax)> in SML <filename>
22735
cf627add250a code generator changes
haftmann
parents: 22450
diff changeset
   603
    writing OCaml code to a file:
25199
haftmann
parents: 25198
diff changeset
   604
        export_code <list of constants (term syntax)> in OCaml <filename>
20188
8b22026445af added notes on class_package.ML and codegen_package.ML
haftmann
parents: 20169
diff changeset
   605
    writing Haskell code to a bunch of files:
25199
haftmann
parents: 25198
diff changeset
   606
        export_code <list of constants (term syntax)> in Haskell <filename>
haftmann
parents: 25198
diff changeset
   607
haftmann
parents: 25198
diff changeset
   608
    evaluating closed propositions to True/False using code generation:
25184
haftmann
parents: 25177
diff changeset
   609
        method ``eval''
haftmann
parents: 25177
diff changeset
   610
haftmann
parents: 25177
diff changeset
   611
Reasonable default setup of framework in HOL.
20453
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   612
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   613
Theorem attributs for selecting and transforming function equations theorems:
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   614
22845
5f9138bcb3d7 changed code generator invocation syntax
haftmann
parents: 22826
diff changeset
   615
    [code fun]:        select a theorem as function equation for a specific constant
5f9138bcb3d7 changed code generator invocation syntax
haftmann
parents: 22826
diff changeset
   616
    [code fun del]:    deselect a theorem as function equation for a specific constant
5f9138bcb3d7 changed code generator invocation syntax
haftmann
parents: 22826
diff changeset
   617
    [code inline]:     select an equation theorem for unfolding (inlining) in place
5f9138bcb3d7 changed code generator invocation syntax
haftmann
parents: 22826
diff changeset
   618
    [code inline del]: deselect an equation theorem for unfolding (inlining) in place
20453
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   619
22735
cf627add250a code generator changes
haftmann
parents: 22450
diff changeset
   620
User-defined serializations (target in {SML, OCaml, Haskell}):
20453
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   621
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   622
    code_const <and-list of constants (term syntax)>
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   623
      {(target) <and-list of const target syntax>}+
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   624
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   625
    code_type <and-list of type constructors>
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   626
      {(target) <and-list of type target syntax>}+
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   627
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   628
    code_instance <and-list of instances>
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   629
      {(target)}+
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   630
        where instance ::= <type constructor> :: <class>
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   631
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   632
    code_class <and_list of classes>
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   633
      {(target) <and-list of class target syntax>}+
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   634
        where class target syntax ::= <class name> {where {<classop> == <target syntax>}+}?
855f07fabd76 final syntax for some Isar code generator keywords
haftmann
parents: 20375
diff changeset
   635
25199
haftmann
parents: 25198
diff changeset
   636
code_instance and code_class only are effective to target Haskell.
22735
cf627add250a code generator changes
haftmann
parents: 22450
diff changeset
   637
25177
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   638
For example usage see src/HOL/ex/Codegenerator.thy and
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   639
src/HOL/ex/Codegenerator_Pretty.thy.  A separate tutorial on code
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   640
generation from Isabelle/HOL theories is available via "isatool doc
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   641
codegen".
20188
8b22026445af added notes on class_package.ML and codegen_package.ML
haftmann
parents: 20169
diff changeset
   642
25129
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   643
* Code generator: consts in 'consts_code' Isar commands are now
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   644
referred to by usual term syntax (including optional type
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   645
annotations).
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
   646
19254
efaf5d47049e Pure: no_translations;
wenzelm
parents: 19252
diff changeset
   647
* Command 'no_translations' removes translation rules from theory
efaf5d47049e Pure: no_translations;
wenzelm
parents: 19252
diff changeset
   648
syntax.
efaf5d47049e Pure: no_translations;
wenzelm
parents: 19252
diff changeset
   649
19625
285771cec083 * Pure: overloaded definitions are now actually checked for acyclic dependencies;
wenzelm
parents: 19587
diff changeset
   650
* Overloaded definitions are now actually checked for acyclic
19714
wenzelm
parents: 19711
diff changeset
   651
dependencies.  The overloading scheme is slightly more general than
wenzelm
parents: 19711
diff changeset
   652
that of Haskell98, although Isabelle does not demand an exact
wenzelm
parents: 19711
diff changeset
   653
correspondence to type class and instance declarations.
wenzelm
parents: 19711
diff changeset
   654
INCOMPATIBILITY, use ``defs (unchecked overloaded)'' to admit more
wenzelm
parents: 19711
diff changeset
   655
exotic versions of overloading -- at the discretion of the user!
19711
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   656
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   657
Polymorphic constants are represented via type arguments, i.e. the
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   658
instantiation that matches an instance against the most general
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   659
declaration given in the signature.  For example, with the declaration
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   660
c :: 'a => 'a => 'a, an instance c :: nat => nat => nat is represented
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   661
as c(nat).  Overloading is essentially simultaneous structural
2401b1a3087f Pure: update on overloaded defs;
wenzelm
parents: 19682
diff changeset
   662
recursion over such type arguments.  Incomplete specification patterns
19714
wenzelm
parents: 19711
diff changeset
   663
impose global constraints on all occurrences, e.g. c('a * 'a) on the
19715
wenzelm
parents: 19714
diff changeset
   664
LHS means that more general c('a * 'b) will be disallowed on any RHS.
19714
wenzelm
parents: 19711
diff changeset
   665
Command 'print_theory' outputs the normalized system of recursive
wenzelm
parents: 19711
diff changeset
   666
equations, see section "definitions".
19625
285771cec083 * Pure: overloaded definitions are now actually checked for acyclic dependencies;
wenzelm
parents: 19587
diff changeset
   667
24086
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   668
* Configuration options are maintained within the theory or proof
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   669
context (with name and type bool/int/string), providing a very simple
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   670
interface to a poor-man's version of general context data.  Tools may
24110
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   671
declare options in ML (e.g. using Attrib.config_int) and then refer to
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   672
these values using Config.get etc.  Users may change options via an
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   673
associated attribute of the same name.  This form of context
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   674
declaration works particularly well with commands 'declare' or
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   675
'using', for example ``declare [[foo = 42]]''.  Thus it has become
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   676
very easy to avoid global references, which would not observe Isar
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   677
toplevel undo/redo and fail to work with multithreading.
24086
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   678
24172
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   679
Various global ML references of Pure and HOL have been turned into
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   680
configuration options:
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   681
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   682
  Unify.search_bound		unify_search_bound
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   683
  Unify.trace_bound		unify_trace_bound
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   684
  Unify.trace_simp		unify_trace_simp
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   685
  Unify.trace_types		unify_trace_types
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   686
  Simplifier.simp_depth_limit	simp_depth_limit
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   687
  Blast.depth_limit		blast_depth_limit
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   688
  DatatypeProp.dtK		datatype_distinctness_limit
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   689
  fast_arith_neq_limit  	fast_arith_neq_limit
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   690
  fast_arith_split_limit	fast_arith_split_limit
06e42cf7df4e theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents: 24110
diff changeset
   691
24086
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   692
* Named collections of theorems may be easily installed as context
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   693
data using the functor NamedThmsFun (see also
24086
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   694
src/Pure/Tools/named_thms.ML).  The user may add or delete facts via
24110
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   695
attributes; there is also a toplevel print command.  This facility is
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   696
just a common case of general context data, which is the preferred way
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   697
for anything more complex than just a list of facts in canonical
4ab3084e311c tuned config options: eliminated separate attribute "option";
wenzelm
parents: 24086
diff changeset
   698
order.
24086
21900a460ba4 * Configuration options;
wenzelm
parents: 24032
diff changeset
   699
24032
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   700
* Isar: command 'declaration' augments a local theory by generic
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   701
declaration functions written in ML.  This enables arbitrary content
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   702
being added to the context, depending on a morphism that tells the
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   703
difference of the original declaration context wrt. the application
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   704
context encountered later on.
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   705
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   706
* Isar: proper interfaces for simplification procedures.  Command
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   707
'simproc_setup' declares named simprocs (with match patterns, and body
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   708
text in ML).  Attribute "simproc" adds/deletes simprocs in the current
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   709
context.  ML antiquotation @{simproc name} retrieves named simprocs.
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   710
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   711
* Isar: an extra pair of brackets around attribute declarations
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   712
abbreviates a theorem reference involving an internal dummy fact,
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   713
which will be ignored later --- only the effect of the attribute on
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   714
the background context will persist.  This form of in-place
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   715
declarations is particularly useful with commands like 'declare' and
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   716
'using', for example ``have A using [[simproc a]] by simp''.
b3d7eb6f535f * Isar: command 'declaration';
wenzelm
parents: 23977
diff changeset
   717
23369
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   718
* Isar: method "assumption" (and implicit closing of subproofs) now
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   719
takes simple non-atomic goal assumptions into account: after applying
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   720
an assumption as a rule the resulting subgoals are solved by atomic
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   721
assumption steps.  This is particularly useful to finish 'obtain'
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   722
goals, such as "!!x. (!!x. P x ==> thesis) ==> P x ==> thesis",
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   723
without referring to the original premise "!!x. P x ==> thesis" in the
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   724
Isar proof context.  POTENTIAL INCOMPATIBILITY: method "assumption" is
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   725
more permissive.
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   726
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   727
* Isar: implicit use of prems from the Isar proof context is
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   728
considered a legacy feature.  Common applications like ``have A .''
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   729
may be replaced by ``have A by fact'' or ``note `A`''.  In general,
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   730
referencing facts explicitly here improves readability and
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   731
maintainability of proof texts.
227c51012cdb * Isar: method "assumption" (implicit closing of subproofs) takes non-atomic goal assumptions into account;
wenzelm
parents: 23367
diff changeset
   732
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   733
* Isar: improper proof element 'guess' is like 'obtain', but derives
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   734
the obtained context from the course of reasoning!  For example:
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   735
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   736
  assume "EX x y. A x & B y"   -- "any previous fact"
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   737
  then guess x and y by clarify
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   738
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   739
This technique is potentially adventurous, depending on the facts and
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   740
proof tools being involved here.
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   741
18020
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   742
* Isar: known facts from the proof context may be specified as literal
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   743
propositions, using ASCII back-quote syntax.  This works wherever
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   744
named facts used to be allowed so far, in proof commands, proof
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   745
methods, attributes etc.  Literal facts are retrieved from the context
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   746
according to unification of type and term parameters.  For example,
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   747
provided that "A" and "A ==> B" and "!!x. P x ==> Q x" are known
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   748
theorems in the current context, then these are valid literal facts:
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   749
`A` and `A ==> B` and `!!x. P x ==> Q x" as well as `P a ==> Q a` etc.
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   750
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   751
There is also a proof method "fact" which does the same composition
18044
wenzelm
parents: 18020
diff changeset
   752
for explicit goal states, e.g. the following proof texts coincide with
wenzelm
parents: 18020
diff changeset
   753
certain special cases of literal facts:
18020
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   754
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   755
  have "A" by fact                 ==  note `A`
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   756
  have "A ==> B" by fact           ==  note `A ==> B`
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   757
  have "!!x. P x ==> Q x" by fact  ==  note `!!x. P x ==> Q x`
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   758
  have "P a ==> Q a" by fact       ==  note `P a ==> Q a`
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   759
20118
0c1ec587a5a8 * Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents: 20090
diff changeset
   760
* Isar: ":" (colon) is no longer a symbolic identifier character in
0c1ec587a5a8 * Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents: 20090
diff changeset
   761
outer syntax.  Thus symbolic identifiers may be used without
0c1ec587a5a8 * Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents: 20090
diff changeset
   762
additional white space in declarations like this: ``assume *: A''.
0c1ec587a5a8 * Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents: 20090
diff changeset
   763
20013
57505678692d Isar: 'print_facts' prints all local facts;
wenzelm
parents: 19984
diff changeset
   764
* Isar: 'print_facts' prints all local facts of the current context,
57505678692d Isar: 'print_facts' prints all local facts;
wenzelm
parents: 19984
diff changeset
   765
both named and unnamed ones.
57505678692d Isar: 'print_facts' prints all local facts;
wenzelm
parents: 19984
diff changeset
   766
18308
f18a54840629 simulaneous 'def';
wenzelm
parents: 18267
diff changeset
   767
* Isar: 'def' now admits simultaneous definitions, e.g.:
f18a54840629 simulaneous 'def';
wenzelm
parents: 18267
diff changeset
   768
f18a54840629 simulaneous 'def';
wenzelm
parents: 18267
diff changeset
   769
  def x == "t" and y == "u"
f18a54840629 simulaneous 'def';
wenzelm
parents: 18267
diff changeset
   770
18540
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   771
* Isar: added command 'unfolding', which is structurally similar to
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   772
'using', but affects both the goal state and facts by unfolding given
18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   773
rewrite rules.  Thus many occurrences of the 'unfold' method or
18540
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   774
'unfolded' attribute may be replaced by first-class proof text.
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   775
18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   776
* Isar: methods 'unfold' / 'fold', attributes 'unfolded' / 'folded',
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   777
and command 'unfolding' now all support object-level equalities
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   778
(potentially conditional).  The underlying notion of rewrite rule is
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   779
analogous to the 'rule_format' attribute, but *not* that of the
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   780
Simplifier (which is usually more generous).
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   781
24238
ae70f95e31de new attribute [rotated]
kleing
parents: 24234
diff changeset
   782
* Isar: the new attribute [rotated n] (default n = 1) rotates the
ae70f95e31de new attribute [rotated]
kleing
parents: 24234
diff changeset
   783
premises of a theorem by n. Useful in conjunction with drule.
ae70f95e31de new attribute [rotated]
kleing
parents: 24234
diff changeset
   784
19220
05b00acff957 Isar/method: goal restriction;
wenzelm
parents: 19211
diff changeset
   785
* Isar: the goal restriction operator [N] (default N = 1) evaluates a
05b00acff957 Isar/method: goal restriction;
wenzelm
parents: 19211
diff changeset
   786
method expression within a sandbox consisting of the first N
19240
wenzelm
parents: 19233
diff changeset
   787
sub-goals, which need to exist.  For example, ``simp_all [3]''
wenzelm
parents: 19233
diff changeset
   788
simplifies the first three sub-goals, while (rule foo, simp_all)[]
wenzelm
parents: 19233
diff changeset
   789
simplifies all new goals that emerge from applying rule foo to the
wenzelm
parents: 19233
diff changeset
   790
originally first one.
19220
05b00acff957 Isar/method: goal restriction;
wenzelm
parents: 19211
diff changeset
   791
19814
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents: 19783
diff changeset
   792
* Isar: schematic goals are no longer restricted to higher-order
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents: 19783
diff changeset
   793
patterns; e.g. ``lemma "?P(?x)" by (rule TrueI)'' now works as
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents: 19783
diff changeset
   794
expected.
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents: 19783
diff changeset
   795
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   796
* Isar: the conclusion of a long theorem statement is now either
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   797
'shows' (a simultaneous conjunction, as before), or 'obtains'
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   798
(essentially a disjunction of cases with local parameters and
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   799
assumptions).  The latter allows to express general elimination rules
18910
wenzelm
parents: 18901
diff changeset
   800
adequately; in this notation common elimination rules look like this:
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   801
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   802
  lemma exE:    -- "EX x. P x ==> (!!x. P x ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   803
    assumes "EX x. P x"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   804
    obtains x where "P x"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   805
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   806
  lemma conjE:  -- "A & B ==> (A ==> B ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   807
    assumes "A & B"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   808
    obtains A and B
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   809
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   810
  lemma disjE:  -- "A | B ==> (A ==> thesis) ==> (B ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   811
    assumes "A | B"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   812
    obtains
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   813
      A
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   814
    | B
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   815
18910
wenzelm
parents: 18901
diff changeset
   816
The subsequent classical rules even refer to the formal "thesis"
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   817
explicitly:
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   818
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   819
  lemma classical:     -- "(~ thesis ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   820
    obtains "~ thesis"
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   821
18910
wenzelm
parents: 18901
diff changeset
   822
  lemma Peirce's_Law:  -- "((thesis ==> something) ==> thesis) ==> thesis"
wenzelm
parents: 18901
diff changeset
   823
    obtains "thesis ==> something"
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   824
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   825
The actual proof of an 'obtains' statement is analogous to that of the
18910
wenzelm
parents: 18901
diff changeset
   826
Isar proof element 'obtain', only that there may be several cases.
wenzelm
parents: 18901
diff changeset
   827
Optional case names may be specified in parentheses; these will be
wenzelm
parents: 18901
diff changeset
   828
available both in the present proof and as annotations in the
wenzelm
parents: 18901
diff changeset
   829
resulting rule, for later use with the 'cases' method (cf. attribute
wenzelm
parents: 18901
diff changeset
   830
case_names).
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   831
21447
379f130843f7 * Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents: 21406
diff changeset
   832
* Isar: the assumptions of a long theorem statement are available as
379f130843f7 * Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents: 21406
diff changeset
   833
"assms" fact in the proof context.  This is more appropriate than the
379f130843f7 * Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents: 21406
diff changeset
   834
(historical) "prems", which refers to all assumptions of the current
379f130843f7 * Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents: 21406
diff changeset
   835
context, including those from the target locale, proof body etc.
379f130843f7 * Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents: 21406
diff changeset
   836
19263
a86d09815dac print_statement;
wenzelm
parents: 19254
diff changeset
   837
* Isar: 'print_statement' prints theorems from the current theory or
a86d09815dac print_statement;
wenzelm
parents: 19254
diff changeset
   838
proof context in long statement form, according to the syntax of a
a86d09815dac print_statement;
wenzelm
parents: 19254
diff changeset
   839
top-level lemma.
a86d09815dac print_statement;
wenzelm
parents: 19254
diff changeset
   840
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   841
* Isar: 'obtain' takes an optional case name for the local context
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   842
introduction rule (default "that").
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   843
19587
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
wenzelm
parents: 19572
diff changeset
   844
* Isar: removed obsolete 'concl is' patterns.  INCOMPATIBILITY, use
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
wenzelm
parents: 19572
diff changeset
   845
explicit (is "_ ==> ?foo") in the rare cases where this still happens
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
wenzelm
parents: 19572
diff changeset
   846
to occur.
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
wenzelm
parents: 19572
diff changeset
   847
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   848
* Pure: syntax "CONST name" produces a fully internalized constant
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   849
according to the current context.  This is particularly useful for
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   850
syntax translations that should refer to internal constant
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   851
representations independently of name spaces.
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   852
21537
45b3a85ee548 * Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents: 21471
diff changeset
   853
* Pure: syntax constant for foo (binder "FOO ") is called "foo_binder"
45b3a85ee548 * Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents: 21471
diff changeset
   854
instead of "FOO ". This allows multiple binder declarations to coexist
45b3a85ee548 * Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents: 21471
diff changeset
   855
in the same context.  INCOMPATIBILITY.
45b3a85ee548 * Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents: 21471
diff changeset
   856
21209
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents: 21200
diff changeset
   857
* Isar/locales: 'notation' provides a robust interface to the 'syntax'
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents: 21200
diff changeset
   858
primitive that also works in a locale context (both for constants and
24950
106fc30769a9 added 'no_notation';
wenzelm
parents: 24924
diff changeset
   859
fixed variables). Type declaration and internal syntactic representation
106fc30769a9 added 'no_notation';
wenzelm
parents: 24924
diff changeset
   860
of given constants retrieved from the context. Likewise, the
106fc30769a9 added 'no_notation';
wenzelm
parents: 24924
diff changeset
   861
'no_notation' command allows to remove given syntax annotations from the
106fc30769a9 added 'no_notation';
wenzelm
parents: 24924
diff changeset
   862
current context.
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   863
19665
8885951e9c2d * Isar/locale: 'const_syntax';
wenzelm
parents: 19653
diff changeset
   864
* Isar/locales: new derived specification elements 'axiomatization',
8885951e9c2d * Isar/locale: 'const_syntax';
wenzelm
parents: 19653
diff changeset
   865
'definition', 'abbreviation', which support type-inference, admit
19083
wenzelm
parents: 19081
diff changeset
   866
object-level specifications (equality, equivalence).  See also the
wenzelm
parents: 19081
diff changeset
   867
isar-ref manual.  Examples:
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents: 19034
diff changeset
   868
19665
8885951e9c2d * Isar/locale: 'const_syntax';
wenzelm
parents: 19653
diff changeset
   869
  axiomatization
21595
wenzelm
parents: 21545
diff changeset
   870
    eq  (infix "===" 50) where
wenzelm
parents: 21545
diff changeset
   871
    eq_refl: "x === x" and eq_subst: "x === y ==> P x ==> P y"
wenzelm
parents: 21545
diff changeset
   872
wenzelm
parents: 21545
diff changeset
   873
  definition "f x y = x + y + 1"
wenzelm
parents: 21545
diff changeset
   874
  definition g where "g x = f x x"
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents: 19034
diff changeset
   875
19363
667b5ea637dd refined 'abbreviation';
wenzelm
parents: 19279
diff changeset
   876
  abbreviation
21595
wenzelm
parents: 21545
diff changeset
   877
    neq  (infix "=!=" 50) where
19363
667b5ea637dd refined 'abbreviation';
wenzelm
parents: 19279
diff changeset
   878
    "x =!= y == ~ (x === y)"
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents: 19034
diff changeset
   879
19083
wenzelm
parents: 19081
diff changeset
   880
These specifications may be also used in a locale context.  Then the
wenzelm
parents: 19081
diff changeset
   881
constants being introduced depend on certain fixed parameters, and the
wenzelm
parents: 19081
diff changeset
   882
constant name is qualified by the locale base name.  An internal
wenzelm
parents: 19081
diff changeset
   883
abbreviation takes care for convenient input and output, making the
19088
wenzelm
parents: 19084
diff changeset
   884
parameters implicit and using the original short name.  See also
25177
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   885
src/HOL/ex/Abstract_NAT.thy for an example of deriving polymorphic
19083
wenzelm
parents: 19081
diff changeset
   886
entities from a monomorphic theory.
wenzelm
parents: 19081
diff changeset
   887
wenzelm
parents: 19081
diff changeset
   888
Presently, abbreviations are only available 'in' a target locale, but
19363
667b5ea637dd refined 'abbreviation';
wenzelm
parents: 19279
diff changeset
   889
not inherited by general import expressions.  Also note that
667b5ea637dd refined 'abbreviation';
wenzelm
parents: 19279
diff changeset
   890
'abbreviation' may be used as a type-safe replacement for 'syntax' +
24735
3a55ee2cae70 * Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents: 24706
diff changeset
   891
'translations' in common applications.  The "no_abbrevs" print mode
3a55ee2cae70 * Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents: 24706
diff changeset
   892
prevents folding of abbreviations in term output.
19084
wenzelm
parents: 19083
diff changeset
   893
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   894
Concrete syntax is attached to specified constants in internal form,
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   895
independently of name spaces.  The parse tree representation is
21209
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents: 21200
diff changeset
   896
slightly different -- use 'notation' instead of raw 'syntax', and
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents: 19665
diff changeset
   897
'translations' with explicit "CONST" markup to accommodate this.
19665
8885951e9c2d * Isar/locale: 'const_syntax';
wenzelm
parents: 19653
diff changeset
   898
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   899
* Pure/Isar: unified syntax for new-style specification mechanisms
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   900
(e.g.  'definition', 'abbreviation', or 'inductive' in HOL) admits
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   901
full type inference and dummy patterns ("_").  For example:
24735
3a55ee2cae70 * Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents: 24706
diff changeset
   902
3a55ee2cae70 * Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents: 24706
diff changeset
   903
  definition "K x _ = x"
3a55ee2cae70 * Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents: 24706
diff changeset
   904
24738
wenzelm
parents: 24737
diff changeset
   905
  inductive conj for A B
wenzelm
parents: 24737
diff changeset
   906
  where "A ==> B ==> conj A B"
wenzelm
parents: 24737
diff changeset
   907
21735
0c65e072f4be added print_abbrevs;
wenzelm
parents: 21717
diff changeset
   908
* Pure: command 'print_abbrevs' prints all constant abbreviations of
0c65e072f4be added print_abbrevs;
wenzelm
parents: 21717
diff changeset
   909
the current context.  Print mode "no_abbrevs" prevents inversion of
0c65e072f4be added print_abbrevs;
wenzelm
parents: 21717
diff changeset
   910
abbreviations on output.
0c65e072f4be added print_abbrevs;
wenzelm
parents: 21717
diff changeset
   911
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   912
* Isar/locales: improved parameter handling: use of locales "var" and
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   913
"struct" no longer necessary; - parameter renamings are no longer
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   914
required to be injective.  For example, this allows to define
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   915
endomorphisms as locale endom = homom mult mult h.
19783
82f365a14960 Improved parameter management of locales.
ballarin
parents: 19715
diff changeset
   916
19931
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
parents: 19895
diff changeset
   917
* Isar/locales: changed the way locales with predicates are defined.
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
parents: 19895
diff changeset
   918
Instead of accumulating the specification, the imported expression is
22126
wenzelm
parents: 22125
diff changeset
   919
now an interpretation.  INCOMPATIBILITY: different normal form of
wenzelm
parents: 22125
diff changeset
   920
locale expressions.  In particular, in interpretations of locales with
wenzelm
parents: 22125
diff changeset
   921
predicates, goals repesenting already interpreted fragments are not
wenzelm
parents: 22125
diff changeset
   922
removed automatically.  Use methods `intro_locales' and
wenzelm
parents: 22125
diff changeset
   923
`unfold_locales'; see below.
wenzelm
parents: 22125
diff changeset
   924
wenzelm
parents: 22125
diff changeset
   925
* Isar/locales: new methods `intro_locales' and `unfold_locales'
wenzelm
parents: 22125
diff changeset
   926
provide backward reasoning on locales predicates.  The methods are
wenzelm
parents: 22125
diff changeset
   927
aware of interpretations and discharge corresponding goals.
wenzelm
parents: 22125
diff changeset
   928
`intro_locales' is less aggressive then `unfold_locales' and does not
wenzelm
parents: 22125
diff changeset
   929
unfold predicates to assumptions.
19931
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
parents: 19895
diff changeset
   930
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
parents: 19895
diff changeset
   931
* Isar/locales: the order in which locale fragments are accumulated
22126
wenzelm
parents: 22125
diff changeset
   932
has changed.  This enables to override declarations from fragments due
wenzelm
parents: 22125
diff changeset
   933
to interpretations -- for example, unwanted simp rules.
19931
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
parents: 19895
diff changeset
   934
23920
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   935
* Isar/locales: interpretation in theories and proof contexts has been
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   936
extended.  One may now specify (and prove) equations, which are
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   937
unfolded in interpreted theorems.  This is useful for replacing
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   938
defined concepts (constants depending on locale parameters) by
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   939
concepts already existing in the target context.  Example:
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   940
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   941
  interpretation partial_order ["op <= :: [int, int] => bool"]
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   942
    where "partial_order.less (op <=) (x::int) y = (x < y)"
4288dc7dc248 interpretation: unfolding of equations;
ballarin
parents: 23889
diff changeset
   943
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   944
Typically, the constant `partial_order.less' is created by a
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   945
definition specification element in the context of locale
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   946
partial_order.
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   947
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   948
* Method "induct": improved internal context management to support
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   949
local fixes and defines on-the-fly. Thus explicit meta-level
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   950
connectives !!  and ==> are rarely required anymore in inductive goals
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   951
(using object-logic connectives for this purpose has been long
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   952
obsolete anyway). Common proof patterns are explained in
25177
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   953
src/HOL/Induct/Common_Patterns.thy, see also
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   954
src/HOL/Isar_examples/Puzzle.thy and src/HOL/Lambda for realistic
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   955
examples.
24606
7acbb982fc77 moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents: 24507
diff changeset
   956
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   957
* Method "induct": improved handling of simultaneous goals. Instead of
24606
7acbb982fc77 moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents: 24507
diff changeset
   958
introducing object-level conjunction, the statement is now split into
7acbb982fc77 moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents: 24507
diff changeset
   959
several conclusions, while the corresponding symbolic cases are nested
7acbb982fc77 moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents: 24507
diff changeset
   960
accordingly. INCOMPATIBILITY, proofs need to be structured explicitly,
25177
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
   961
see src/HOL/Induct/Common_Patterns.thy, for example.
24606
7acbb982fc77 moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents: 24507
diff changeset
   962
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   963
* Method "induct": mutual induction rules are now specified as a list
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
   964
of rule sharing the same induction cases. HOL packages usually provide
24606
7acbb982fc77 moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents: 24507
diff changeset
   965
foo_bar.inducts for mutually defined items foo and bar (e.g. inductive
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   966
predicates/sets or datatypes). INCOMPATIBILITY, users need to specify
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   967
mutual induction rules differently, i.e. like this:
18506
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   968
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   969
  (induct rule: foo_bar.inducts)
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   970
  (induct set: foo bar)
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   971
  (induct pred: foo bar)
18506
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   972
  (induct type: foo bar)
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   973
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   974
The ML function ProjectRule.projections turns old-style rules into the
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   975
new format.
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   976
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   977
* Method "coinduct": dual of induction, see
18399
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   978
src/HOL/Library/Coinductive_List.thy for various examples.
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   979
24859
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   980
* Method "cases", "induct", "coinduct": the ``(open)'' option is
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   981
considered a legacy feature.
9b9b1599fb89 tuned induct etc.;
wenzelm
parents: 24804
diff changeset
   982
20919
dab803075c62 attribute "symmetric": standardized schematic variables;
wenzelm
parents: 20857
diff changeset
   983
* Attribute "symmetric" produces result with standardized schematic
dab803075c62 attribute "symmetric": standardized schematic variables;
wenzelm
parents: 20857
diff changeset
   984
variables (index 0).  Potential INCOMPATIBILITY.
dab803075c62 attribute "symmetric": standardized schematic variables;
wenzelm
parents: 20857
diff changeset
   985
22126
wenzelm
parents: 22125
diff changeset
   986
* Simplifier: by default the simplifier trace only shows top level
wenzelm
parents: 22125
diff changeset
   987
rewrites now. That is, trace_simp_depth_limit is set to 1 by
wenzelm
parents: 22125
diff changeset
   988
default. Thus there is less danger of being flooded by the trace. The
wenzelm
parents: 22125
diff changeset
   989
trace indicates where parts have been suppressed.
18674
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   990
  
18536
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   991
* Provers/classical: removed obsolete classical version of elim_format
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   992
attribute; classical elim/dest rules are now treated uniformly when
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   993
manipulating the claset.
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   994
18694
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   995
* Provers/classical: stricter checks to ensure that supplied intro,
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   996
dest and elim rules are well-formed; dest and elim rules must have at
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   997
least one premise.
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   998
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   999
* Provers/classical: attributes dest/elim/intro take an optional
18695
wenzelm
parents: 18694
diff changeset
  1000
weight argument for the rule (just as the Pure versions).  Weights are
18696
wenzelm
parents: 18695
diff changeset
  1001
ignored by automated tools, but determine the search order of single
18694
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
  1002
rule steps.
18557
60a0f9caa0a2 Provers/classical: stricter checks to ensure that supplied intro, dest and
paulson
parents: 18549
diff changeset
  1003
18536
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1004
* Syntax: input syntax now supports dummy variable binding "%_. b",
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1005
where the body does not mention the bound variable.  Note that dummy
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1006
patterns implicitly depend on their context of bounds, which makes
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1007
"{_. _}" match any set comprehension as expected.  Potential
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1008
INCOMPATIBILITY -- parse translations need to cope with syntactic
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1009
constant "_idtdummy" in the binding position.
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1010
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1011
* Syntax: removed obsolete syntactic constant "_K" and its associated
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1012
parse translation.  INCOMPATIBILITY -- use dummy abstraction instead,
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
  1013
for example "A -> B" => "Pi A (%_. B)".
17779
407bea05c2da added dummy variable binding;
wenzelm
parents: 17754
diff changeset
  1014
20582
ebd0e03c6a9b * Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents: 20503
diff changeset
  1015
* Pure: 'class_deps' command visualizes the subclass relation, using
ebd0e03c6a9b * Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents: 20503
diff changeset
  1016
the graph browser tool.
ebd0e03c6a9b * Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents: 20503
diff changeset
  1017
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1018
* Pure: 'print_theory' now suppresses certain internal declarations by
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1019
default; use '!' option for full details.
20620
8b26f58c5646 * Pure: 'print_theory' now suppresses entities with internal name;
wenzelm
parents: 20607
diff changeset
  1020
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
  1021
17806
b6a547bfb419 *** empty log message ***
nipkow
parents: 17780
diff changeset
  1022
*** HOL ***
b6a547bfb419 *** empty log message ***
nipkow
parents: 17780
diff changeset
  1023
25129
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1024
* Method "metis" proves goals by applying the Metis general-purpose
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1025
resolution prover (see also http://gilith.com/software/metis/).
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1026
Examples are in the directory MetisExamples.  WARNING: the
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1027
Isabelle/HOL-Metis integration does not yet work properly with
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1028
multi-threading.
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1029
  
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1030
* Command 'sledgehammer' invokes external automatic theorem provers as
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1031
background processes.  It generates calls to the "metis" method if
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1032
successful. These can be pasted into the proof.  Users do not have to
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1033
wait for the automatic provers to return.  WARNING: does not really
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1034
work with multi-threading.
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1035
24804
513bb015b469 added auto_quickcheck feature;
wenzelm
parents: 24801
diff changeset
  1036
* New "auto_quickcheck" feature tests outermost goal statements for
513bb015b469 added auto_quickcheck feature;
wenzelm
parents: 24801
diff changeset
  1037
potential counter-examples.  Controlled by ML references
513bb015b469 added auto_quickcheck feature;
wenzelm
parents: 24801
diff changeset
  1038
auto_quickcheck (default true) and auto_quickcheck_time_limit (default
25129
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1039
5000 milliseconds).  Fails silently if statements is outside of
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1040
executable fragment, or any other codgenerator problem occurs.
24804
513bb015b469 added auto_quickcheck feature;
wenzelm
parents: 24801
diff changeset
  1041
25184
haftmann
parents: 25177
diff changeset
  1042
* New constant "undefined" with axiom "undefined x = undefined".
haftmann
parents: 25177
diff changeset
  1043
haftmann
parents: 25177
diff changeset
  1044
* Added class "HOL.eq", allowing for code generation with polymorphic
haftmann
parents: 25177
diff changeset
  1045
equality.
haftmann
parents: 25177
diff changeset
  1046
haftmann
parents: 25177
diff changeset
  1047
* Some renaming of class constants due to canonical name prefixing in
haftmann
parents: 25177
diff changeset
  1048
the new 'class' package:
haftmann
parents: 25177
diff changeset
  1049
haftmann
parents: 25177
diff changeset
  1050
    HOL.abs ~> HOL.abs_class.abs
haftmann
parents: 25177
diff changeset
  1051
    HOL.divide ~> HOL.divide_class.divide
haftmann
parents: 25177
diff changeset
  1052
    0 ~> HOL.zero_class.zero
haftmann
parents: 25177
diff changeset
  1053
    1 ~> HOL.one_class.one
haftmann
parents: 25177
diff changeset
  1054
    op + ~> HOL.plus_class.plus
haftmann
parents: 25177
diff changeset
  1055
    op - ~> HOL.minus_class.minus
haftmann
parents: 25177
diff changeset
  1056
    uminus ~> HOL.minus_class.uminus
haftmann
parents: 25177
diff changeset
  1057
    op * ~> HOL.times_class.times
haftmann
parents: 25177
diff changeset
  1058
    op < ~> HOL.ord_class.less
haftmann
parents: 25177
diff changeset
  1059
    op <= > HOL.ord_class.less_eq
haftmann
parents: 25177
diff changeset
  1060
    Nat.power ~> Power.power_class.power
haftmann
parents: 25177
diff changeset
  1061
    Nat.size ~> Nat.size_class.size
haftmann
parents: 25177
diff changeset
  1062
    Numeral.number_of ~> Numeral.number_class.number_of
haftmann
parents: 25177
diff changeset
  1063
    FixedPoint.Inf ~> Lattices.complete_lattice_class.Inf
haftmann
parents: 25177
diff changeset
  1064
    FixedPoint.Sup ~> Lattices.complete_lattice_class.Sup
haftmann
parents: 25177
diff changeset
  1065
    Orderings.min ~> Orderings.ord_class.min
haftmann
parents: 25177
diff changeset
  1066
    Orderings.max ~> Orderings.ord_class.max
haftmann
parents: 25177
diff changeset
  1067
    Divides.op div ~> Divides.div_class.div
haftmann
parents: 25177
diff changeset
  1068
    Divides.op mod ~> Divides.div_class.mod
haftmann
parents: 25177
diff changeset
  1069
    Divides.op dvd ~> Divides.div_class.dvd
haftmann
parents: 25177
diff changeset
  1070
haftmann
parents: 25177
diff changeset
  1071
INCOMPATIBILITY.  Adaptions may be required in the following cases:
haftmann
parents: 25177
diff changeset
  1072
haftmann
parents: 25177
diff changeset
  1073
a) User-defined constants using any of the names "plus", "minus",
haftmann
parents: 25177
diff changeset
  1074
"times", "less" or "less_eq". The standard syntax translations for
haftmann
parents: 25177
diff changeset
  1075
"+", "-" and "*" may go wrong.  INCOMPATIBILITY: use more specific
haftmann
parents: 25177
diff changeset
  1076
names.
haftmann
parents: 25177
diff changeset
  1077
haftmann
parents: 25177
diff changeset
  1078
b) Variables named "plus", "minus", "times", "less", "less_eq"
haftmann
parents: 25177
diff changeset
  1079
INCOMPATIBILITY: use more specific names.
haftmann
parents: 25177
diff changeset
  1080
haftmann
parents: 25177
diff changeset
  1081
c) Permutative equations (e.g. "a + b = b + a")
haftmann
parents: 25177
diff changeset
  1082
Since the change of names also changes the order of terms, permutative
haftmann
parents: 25177
diff changeset
  1083
rewrite rules may get applied in a different order. Experience shows
haftmann
parents: 25177
diff changeset
  1084
that this is rarely the case (only two adaptions in the whole Isabelle
haftmann
parents: 25177
diff changeset
  1085
distribution).  INCOMPATIBILITY: rewrite proofs
haftmann
parents: 25177
diff changeset
  1086
haftmann
parents: 25177
diff changeset
  1087
d) ML code directly refering to constant names
haftmann
parents: 25177
diff changeset
  1088
This in general only affects hand-written proof tactics, simprocs and
haftmann
parents: 25177
diff changeset
  1089
so on.  INCOMPATIBILITY: grep your sourcecode and replace names.
haftmann
parents: 25177
diff changeset
  1090
Consider using @{const_name} antiquotation.
haftmann
parents: 25177
diff changeset
  1091
haftmann
parents: 25177
diff changeset
  1092
* New class "default" with associated constant "default".
haftmann
parents: 25177
diff changeset
  1093
haftmann
parents: 25177
diff changeset
  1094
* Function "sgn" is now overloaded and available on int, real, complex
haftmann
parents: 25177
diff changeset
  1095
(and other numeric types), using class "sgn".  Two possible defs of
haftmann
parents: 25177
diff changeset
  1096
sgn are given as equational assumptions in the classes sgn_if and
haftmann
parents: 25177
diff changeset
  1097
sgn_div_norm; ordered_idom now also inherits from sgn_if.
haftmann
parents: 25177
diff changeset
  1098
INCOMPATIBILITY.
haftmann
parents: 25177
diff changeset
  1099
haftmann
parents: 25177
diff changeset
  1100
* Locale "partial_order" now unified with class "order" (cf. theory
haftmann
parents: 25177
diff changeset
  1101
Orderings), added parameter "less".  INCOMPATIBILITY.
haftmann
parents: 25177
diff changeset
  1102
haftmann
parents: 25177
diff changeset
  1103
* Renamings in classes "order" and "linorder": facts "refl", "trans" and
haftmann
parents: 25177
diff changeset
  1104
"cases" to "order_refl", "order_trans" and "linorder_cases", to avoid
haftmann
parents: 25177
diff changeset
  1105
clashes with HOL "refl" and "trans".  INCOMPATIBILITY.
haftmann
parents: 25177
diff changeset
  1106
haftmann
parents: 25177
diff changeset
  1107
* Classes "order" and "linorder": potential INCOMPATIBILITY due to
haftmann
parents: 25177
diff changeset
  1108
changed order of proof goals in instance proofs.
haftmann
parents: 25177
diff changeset
  1109
haftmann
parents: 25177
diff changeset
  1110
* The transitivity reasoner for partial and linear orders is set up
haftmann
parents: 25177
diff changeset
  1111
for classes "order" and "linorder".  Instances of the reasoner are available
haftmann
parents: 25177
diff changeset
  1112
in all contexts importing or interpreting the corresponding locales.
haftmann
parents: 25177
diff changeset
  1113
Method "order" invokes the reasoner separately; the reasoner
haftmann
parents: 25177
diff changeset
  1114
is also integrated with the Simplifier as a solver.  Diagnostic
haftmann
parents: 25177
diff changeset
  1115
command 'print_orders' shows the available instances of the reasoner
haftmann
parents: 25177
diff changeset
  1116
in the current context.
haftmann
parents: 25177
diff changeset
  1117
haftmann
parents: 25177
diff changeset
  1118
* Localized monotonicity predicate in theory "Orderings"; integrated
haftmann
parents: 25177
diff changeset
  1119
lemmas max_of_mono and min_of_mono with this predicate.
haftmann
parents: 25177
diff changeset
  1120
INCOMPATIBILITY.
haftmann
parents: 25177
diff changeset
  1121
haftmann
parents: 25177
diff changeset
  1122
* Formulation of theorem "dense" changed slightly due to integration
haftmann
parents: 25177
diff changeset
  1123
with new class dense_linear_order.
haftmann
parents: 25177
diff changeset
  1124
haftmann
parents: 25177
diff changeset
  1125
* Uniform lattice theory development in HOL.
haftmann
parents: 25177
diff changeset
  1126
haftmann
parents: 25177
diff changeset
  1127
    constants "meet" and "join" now named "inf" and "sup"
haftmann
parents: 25177
diff changeset
  1128
    constant "Meet" now named "Inf"
haftmann
parents: 25177
diff changeset
  1129
haftmann
parents: 25177
diff changeset
  1130
    classes "meet_semilorder" and "join_semilorder" now named
haftmann
parents: 25177
diff changeset
  1131
      "lower_semilattice" and "upper_semilattice"
haftmann
parents: 25177
diff changeset
  1132
    class "lorder" now named "lattice"
haftmann
parents: 25177
diff changeset
  1133
    class "comp_lat" now named "complete_lattice"
haftmann
parents: 25177
diff changeset
  1134
haftmann
parents: 25177
diff changeset
  1135
    Instantiation of lattice classes allows explicit definitions
haftmann
parents: 25177
diff changeset
  1136
    for "inf" and "sup" operations (or "Inf" and "Sup" for complete lattices).
haftmann
parents: 25177
diff changeset
  1137
haftmann
parents: 25177
diff changeset
  1138
  INCOMPATIBILITY.  Theorem renames:
haftmann
parents: 25177
diff changeset
  1139
haftmann
parents: 25177
diff changeset
  1140
    meet_left_le            ~> inf_le1
haftmann
parents: 25177
diff changeset
  1141
    meet_right_le           ~> inf_le2
haftmann
parents: 25177
diff changeset
  1142
    join_left_le            ~> sup_ge1
haftmann
parents: 25177
diff changeset
  1143
    join_right_le           ~> sup_ge2
haftmann
parents: 25177
diff changeset
  1144
    meet_join_le            ~> inf_sup_ord
haftmann
parents: 25177
diff changeset
  1145
    le_meetI                ~> le_infI
haftmann
parents: 25177
diff changeset
  1146
    join_leI                ~> le_supI
haftmann
parents: 25177
diff changeset
  1147
    le_meet                 ~> le_inf_iff
haftmann
parents: 25177
diff changeset
  1148
    le_join                 ~> ge_sup_conv
haftmann
parents: 25177
diff changeset
  1149
    meet_idempotent         ~> inf_idem
haftmann
parents: 25177
diff changeset
  1150
    join_idempotent         ~> sup_idem
haftmann
parents: 25177
diff changeset
  1151
    meet_comm               ~> inf_commute
haftmann
parents: 25177
diff changeset
  1152
    join_comm               ~> sup_commute
haftmann
parents: 25177
diff changeset
  1153
    meet_leI1               ~> le_infI1
haftmann
parents: 25177
diff changeset
  1154
    meet_leI2               ~> le_infI2
haftmann
parents: 25177
diff changeset
  1155
    le_joinI1               ~> le_supI1
haftmann
parents: 25177
diff changeset
  1156
    le_joinI2               ~> le_supI2
haftmann
parents: 25177
diff changeset
  1157
    meet_assoc              ~> inf_assoc
haftmann
parents: 25177
diff changeset
  1158
    join_assoc              ~> sup_assoc
haftmann
parents: 25177
diff changeset
  1159
    meet_left_comm          ~> inf_left_commute
haftmann
parents: 25177
diff changeset
  1160
    meet_left_idempotent    ~> inf_left_idem
haftmann
parents: 25177
diff changeset
  1161
    join_left_comm          ~> sup_left_commute
haftmann
parents: 25177
diff changeset
  1162
    join_left_idempotent    ~> sup_left_idem
haftmann
parents: 25177
diff changeset
  1163
    meet_aci                ~> inf_aci
haftmann
parents: 25177
diff changeset
  1164
    join_aci                ~> sup_aci
haftmann
parents: 25177
diff changeset
  1165
    le_def_meet             ~> le_iff_inf
haftmann
parents: 25177
diff changeset
  1166
    le_def_join             ~> le_iff_sup
haftmann
parents: 25177
diff changeset
  1167
    join_absorp2            ~> sup_absorb2
haftmann
parents: 25177
diff changeset
  1168
    join_absorp1            ~> sup_absorb1
haftmann
parents: 25177
diff changeset
  1169
    meet_absorp1            ~> inf_absorb1
haftmann
parents: 25177
diff changeset
  1170
    meet_absorp2            ~> inf_absorb2
haftmann
parents: 25177
diff changeset
  1171
    meet_join_absorp        ~> inf_sup_absorb
haftmann
parents: 25177
diff changeset
  1172
    join_meet_absorp        ~> sup_inf_absorb
haftmann
parents: 25177
diff changeset
  1173
    distrib_join_le         ~> distrib_sup_le
haftmann
parents: 25177
diff changeset
  1174
    distrib_meet_le         ~> distrib_inf_le
haftmann
parents: 25177
diff changeset
  1175
haftmann
parents: 25177
diff changeset
  1176
    add_meet_distrib_left   ~> add_inf_distrib_left
haftmann
parents: 25177
diff changeset
  1177
    add_join_distrib_left   ~> add_sup_distrib_left
haftmann
parents: 25177
diff changeset
  1178
    is_join_neg_meet        ~> is_join_neg_inf
haftmann
parents: 25177
diff changeset
  1179
    is_meet_neg_join        ~> is_meet_neg_sup
haftmann
parents: 25177
diff changeset
  1180
    add_meet_distrib_right  ~> add_inf_distrib_right
haftmann
parents: 25177
diff changeset
  1181
    add_join_distrib_right  ~> add_sup_distrib_right
haftmann
parents: 25177
diff changeset
  1182
    add_meet_join_distribs  ~> add_sup_inf_distribs
haftmann
parents: 25177
diff changeset
  1183
    join_eq_neg_meet        ~> sup_eq_neg_inf
haftmann
parents: 25177
diff changeset
  1184
    meet_eq_neg_join        ~> inf_eq_neg_sup
haftmann
parents: 25177
diff changeset
  1185
    add_eq_meet_join        ~> add_eq_inf_sup
haftmann
parents: 25177
diff changeset
  1186
    meet_0_imp_0            ~> inf_0_imp_0
haftmann
parents: 25177
diff changeset
  1187
    join_0_imp_0            ~> sup_0_imp_0
haftmann
parents: 25177
diff changeset
  1188
    meet_0_eq_0             ~> inf_0_eq_0
haftmann
parents: 25177
diff changeset
  1189
    join_0_eq_0             ~> sup_0_eq_0
haftmann
parents: 25177
diff changeset
  1190
    neg_meet_eq_join        ~> neg_inf_eq_sup
haftmann
parents: 25177
diff changeset
  1191
    neg_join_eq_meet        ~> neg_sup_eq_inf
haftmann
parents: 25177
diff changeset
  1192
    join_eq_if              ~> sup_eq_if
haftmann
parents: 25177
diff changeset
  1193
haftmann
parents: 25177
diff changeset
  1194
    mono_meet               ~> mono_inf
haftmann
parents: 25177
diff changeset
  1195
    mono_join               ~> mono_sup
haftmann
parents: 25177
diff changeset
  1196
    meet_bool_eq            ~> inf_bool_eq
haftmann
parents: 25177
diff changeset
  1197
    join_bool_eq            ~> sup_bool_eq
haftmann
parents: 25177
diff changeset
  1198
    meet_fun_eq             ~> inf_fun_eq
haftmann
parents: 25177
diff changeset
  1199
    join_fun_eq             ~> sup_fun_eq
haftmann
parents: 25177
diff changeset
  1200
    meet_set_eq             ~> inf_set_eq
haftmann
parents: 25177
diff changeset
  1201
    join_set_eq             ~> sup_set_eq
haftmann
parents: 25177
diff changeset
  1202
    meet1_iff               ~> inf1_iff
haftmann
parents: 25177
diff changeset
  1203
    meet2_iff               ~> inf2_iff
haftmann
parents: 25177
diff changeset
  1204
    meet1I                  ~> inf1I
haftmann
parents: 25177
diff changeset
  1205
    meet2I                  ~> inf2I
haftmann
parents: 25177
diff changeset
  1206
    meet1D1                 ~> inf1D1
haftmann
parents: 25177
diff changeset
  1207
    meet2D1                 ~> inf2D1
haftmann
parents: 25177
diff changeset
  1208
    meet1D2                 ~> inf1D2
haftmann
parents: 25177
diff changeset
  1209
    meet2D2                 ~> inf2D2
haftmann
parents: 25177
diff changeset
  1210
    meet1E                  ~> inf1E
haftmann
parents: 25177
diff changeset
  1211
    meet2E                  ~> inf2E
haftmann
parents: 25177
diff changeset
  1212
    join1_iff               ~> sup1_iff
haftmann
parents: 25177
diff changeset
  1213
    join2_iff               ~> sup2_iff
haftmann
parents: 25177
diff changeset
  1214
    join1I1                 ~> sup1I1
haftmann
parents: 25177
diff changeset
  1215
    join2I1                 ~> sup2I1
haftmann
parents: 25177
diff changeset
  1216
    join1I1                 ~> sup1I1
haftmann
parents: 25177
diff changeset
  1217
    join2I2                 ~> sup1I2
haftmann
parents: 25177
diff changeset
  1218
    join1CI                 ~> sup1CI
haftmann
parents: 25177
diff changeset
  1219
    join2CI                 ~> sup2CI
haftmann
parents: 25177
diff changeset
  1220
    join1E                  ~> sup1E
haftmann
parents: 25177
diff changeset
  1221
    join2E                  ~> sup2E
haftmann
parents: 25177
diff changeset
  1222
haftmann
parents: 25177
diff changeset
  1223
    is_meet_Meet            ~> is_meet_Inf
haftmann
parents: 25177
diff changeset
  1224
    Meet_bool_def           ~> Inf_bool_def
haftmann
parents: 25177
diff changeset
  1225
    Meet_fun_def            ~> Inf_fun_def
haftmann
parents: 25177
diff changeset
  1226
    Meet_greatest           ~> Inf_greatest
haftmann
parents: 25177
diff changeset
  1227
    Meet_lower              ~> Inf_lower
haftmann
parents: 25177
diff changeset
  1228
    Meet_set_def            ~> Inf_set_def
haftmann
parents: 25177
diff changeset
  1229
haftmann
parents: 25177
diff changeset
  1230
    Sup_def                 ~> Sup_Inf
haftmann
parents: 25177
diff changeset
  1231
    Sup_bool_eq             ~> Sup_bool_def
haftmann
parents: 25177
diff changeset
  1232
    Sup_fun_eq              ~> Sup_fun_def
haftmann
parents: 25177
diff changeset
  1233
    Sup_set_eq              ~> Sup_set_def
haftmann
parents: 25177
diff changeset
  1234
haftmann
parents: 25177
diff changeset
  1235
    listsp_meetI            ~> listsp_infI
haftmann
parents: 25177
diff changeset
  1236
    listsp_meet_eq          ~> listsp_inf_eq
haftmann
parents: 25177
diff changeset
  1237
haftmann
parents: 25177
diff changeset
  1238
    meet_min                ~> inf_min
haftmann
parents: 25177
diff changeset
  1239
    join_max                ~> sup_max
haftmann
parents: 25177
diff changeset
  1240
haftmann
parents: 25177
diff changeset
  1241
* Added syntactic class "size"; overloaded constant "size" now has
haftmann
parents: 25177
diff changeset
  1242
type "'a::size ==> bool"
haftmann
parents: 25177
diff changeset
  1243
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1244
* Internal reorganisation of `size' of datatypes: size theorems
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1245
"foo.size" are no longer subsumed by "foo.simps" (but are still
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1246
simplification rules by default!); theorems "prod.size" now named
25184
haftmann
parents: 25177
diff changeset
  1247
"*.size".
haftmann
parents: 25177
diff changeset
  1248
haftmann
parents: 25177
diff changeset
  1249
* Class "div" now inherits from class "times" rather than "type".
haftmann
parents: 25177
diff changeset
  1250
INCOMPATIBILITY.
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1251
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1252
* HOL/Finite_Set: "name-space" locales Lattice, Distrib_lattice,
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1253
Linorder etc.  have disappeared; operations defined in terms of
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1254
fold_set now are named Inf_fin, Sup_fin.  INCOMPATIBILITY.
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1255
25129
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1256
* HOL/Nat: neq0_conv no longer declared as iff.  INCOMPATIBILITY.
de54445dc82c misc tuning;
wenzelm
parents: 25127
diff changeset
  1257
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1258
* HOL-Word: New extensive library and type for generic, fixed size
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1259
machine words, with arithemtic, bit-wise, shifting and rotating
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1260
operations, reflection into int, nat, and bool lists, automation for
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1261
linear arithmetic (by automatic reflection into nat or int), including
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1262
lemmas on overflow and monotonicity.  Instantiated to all appropriate
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1263
arithmetic type classes, supporting automatic simplification of
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1264
numerals on all operations.
24333
e77ea0ea7f2c * HOL-Word:
kleing
parents: 24238
diff changeset
  1265
e77ea0ea7f2c * HOL-Word:
kleing
parents: 24238
diff changeset
  1266
* Library/Boolean_Algebra: locales for abstract boolean algebras.
e77ea0ea7f2c * HOL-Word:
kleing
parents: 24238
diff changeset
  1267
e77ea0ea7f2c * HOL-Word:
kleing
parents: 24238
diff changeset
  1268
* Library/Numeral_Type: numbers as types, e.g. TYPE(32).
e77ea0ea7f2c * HOL-Word:
kleing
parents: 24238
diff changeset
  1269
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1270
* Code generator library theories:
24993
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1271
  - Code_Integer represents HOL integers by big integer literals in target
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1272
    languages.
24993
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1273
  - Code_Char represents HOL characters by character literals in target
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1274
    languages.
24993
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1275
  - Code_Char_chr like Code_Char, but also offers treatment of character
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1276
    codes; includes Code_Integer.
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1277
  - Executable_Set allows to generate code for finite sets using lists.
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1278
  - Executable_Rat implements rational numbers as triples (sign, enumerator,
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1279
    denominator).
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1280
  - Executable_Real implements a subset of real numbers, namly those
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1281
    representable by rational numbers.
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1282
  - Efficient_Nat implements natural numbers by integers, which in general will
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1283
    result in higher efficency; pattern matching with 0/Suc is eliminated;
24993
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1284
    includes Code_Integer.
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1285
  - Code_Index provides an additional datatype index which is mapped to
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1286
    target-language built-in integers.
26355
9276633fdc24 Theory Product_Type; fixed typos
haftmann
parents: 26335
diff changeset
  1287
  - Code_Message provides an additional datatype message_string which is isomorphic to
24993
92dfacb32053 class div inherits from class times
haftmann
parents: 24950
diff changeset
  1288
    strings; messages are mapped to target-language strings.
23850
f1434532a562 updated
haftmann
parents: 23783
diff changeset
  1289
23783
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1290
* New package for inductive predicates
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1291
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1292
  An n-ary predicate p with m parameters z_1, ..., z_m can now be defined via
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1293
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1294
    inductive
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1295
      p :: "U_1 => ... => U_m => T_1 => ... => T_n => bool"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1296
      for z_1 :: U_1 and ... and z_n :: U_m
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1297
    where
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1298
      rule_1: "... ==> p z_1 ... z_m t_1_1 ... t_1_n"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1299
    | ...
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1300
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1301
  with full support for type-inference, rather than
23783
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1302
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1303
    consts s :: "U_1 => ... => U_m => (T_1 * ... * T_n) set"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1304
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1305
    abbreviation p :: "U_1 => ... => U_m => T_1 => ... => T_n => bool"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1306
    where "p z_1 ... z_m x_1 ... x_n == (x_1, ..., x_n) : s z_1 ... z_m"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1307
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1308
    inductive "s z_1 ... z_m"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1309
    intros
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1310
      rule_1: "... ==> (t_1_1, ..., t_1_n) : s z_1 ... z_m"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1311
      ...
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1312
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1313
  For backward compatibility, there is a wrapper allowing inductive
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1314
  sets to be defined with the new package via
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1315
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1316
    inductive_set
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1317
      s :: "U_1 => ... => U_m => (T_1 * ... * T_n) set"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1318
      for z_1 :: U_1 and ... and z_n :: U_m
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1319
    where
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1320
      rule_1: "... ==> (t_1_1, ..., t_1_n) : s z_1 ... z_m"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1321
    | ...
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1322
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1323
  or
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1324
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1325
    inductive_set
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1326
      s :: "U_1 => ... => U_m => (T_1 * ... * T_n) set"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1327
      and p :: "U_1 => ... => U_m => T_1 => ... => T_n => bool"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1328
      for z_1 :: U_1 and ... and z_n :: U_m
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1329
    where
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1330
      "p z_1 ... z_m x_1 ... x_n == (x_1, ..., x_n) : s z_1 ... z_m"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1331
    | rule_1: "... ==> p z_1 ... z_m t_1_1 ... t_1_n"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1332
    | ...
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1333
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1334
  if the additional syntax "p ..." is required.
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1335
25177
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
  1336
  Numerous examples can be found in the subdirectories src/HOL/Auth,
f9ced25685e0 tuned file names etc.;
wenzelm
parents: 25163
diff changeset
  1337
  src/HOL/Bali, src/HOL/Induct, and src/HOL/MicroJava.
23783
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1338
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1339
  INCOMPATIBILITIES:
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1340
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1341
  - Since declaration and definition of inductive sets or predicates
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1342
    is no longer separated, abbreviations involving the newly
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1343
    introduced sets or predicates must be specified together with the
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1344
    introduction rules after the 'where' keyword (see above), rather
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1345
    than before the actual inductive definition.
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1346
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1347
  - The variables in induction and elimination rules are now
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1348
    quantified in the order of their occurrence in the introduction
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1349
    rules, rather than in alphabetical order. Since this may break
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1350
    some proofs, these proofs either have to be repaired, e.g. by
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1351
    reordering the variables a_i_1 ... a_i_{k_i} in Isar 'case'
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1352
    statements of the form
23783
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1353
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1354
      case (rule_i a_i_1 ... a_i_{k_i})
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1355
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1356
    or the old order of quantification has to be restored by explicitly adding
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1357
    meta-level quantifiers in the introduction rules, i.e.
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1358
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1359
      | rule_i: "!!a_i_1 ... a_i_{k_i}. ... ==> p z_1 ... z_m t_i_1 ... t_i_n"
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1360
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1361
  - The format of the elimination rules is now
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1362
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1363
      p z_1 ... z_m x_1 ... x_n ==>
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1364
        (!!a_1_1 ... a_1_{k_1}. x_1 = t_1_1 ==> ... ==> x_n = t_1_n ==> ... ==> P)
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1365
        ==> ... ==> P
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1366
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1367
    for predicates and
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1368
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1369
      (x_1, ..., x_n) : s z_1 ... z_m ==>
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1370
        (!!a_1_1 ... a_1_{k_1}. x_1 = t_1_1 ==> ... ==> x_n = t_1_n ==> ... ==> P)
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1371
        ==> ... ==> P
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1372
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1373
    for sets rather than
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1374
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1375
      x : s z_1 ... z_m ==>
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1376
        (!!a_1_1 ... a_1_{k_1}. x = (t_1_1, ..., t_1_n) ==> ... ==> P)
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1377
        ==> ... ==> P
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1378
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1379
    This may require terms in goals to be expanded to n-tuples
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1380
    (e.g. using case_tac or simplification with the split_paired_all
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1381
    rule) before the above elimination rule is applicable.
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1382
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1383
  - The elimination or case analysis rules for (mutually) inductive
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1384
    sets or predicates are now called "p_1.cases" ... "p_k.cases". The
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1385
    list of rules "p_1_..._p_k.elims" is no longer available.
23783
e4d514f81d95 Added entry for new inductive definition package.
berghofe
parents: 23565
diff changeset
  1386
25198
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1387
* New package "function"/"fun" for general recursive functions,
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1388
supporting mutual and nested recursion, definitions in local contexts,
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1389
more general pattern matching and partiality. See HOL/ex/Fundefs.thy
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1390
for small examples, and the separate tutorial on the function
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1391
package. The old recdef "package" is still available as before, but
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1392
users are encouraged to use the new package.
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1393
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1394
* Method "lexicographic_order" automatically synthesizes termination
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1395
relations as lexicographic combinations of size measures. 
1e904070e9cb added NEWS entry for function package
krauss
parents: 25184
diff changeset
  1396
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1397
* Case-expressions allow arbitrary constructor-patterns (including
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1398
"_") and take their order into account, like in functional
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1399
programming.  Internally, this is translated into nested
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1400
case-expressions; missing cases are added and mapped to the predefined
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1401
constant "undefined". In complicated cases printing may no longer show
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1402
the original input but the internal form. Lambda-abstractions allow
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1403
the same form of pattern matching: "% pat1 => e1 | ..." is an
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1404
abbreviation for "%x. case x of pat1 => e1 | ..." where x is a new
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1405
variable.
23564
ae0e735fbec8 *** empty log message ***
nipkow
parents: 23562
diff changeset
  1406
23468
d27d79a47592 changed simp rules for of_nat
huffman
parents: 23449
diff changeset
  1407
* IntDef: The constant "int :: nat => int" has been removed; now "int"
24800
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1408
is an abbreviation for "of_nat :: nat => int". The simplification
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1409
rules for "of_nat" have been changed to work like "int" did
3ab455b3d03b misc tuning and update;
wenzelm
parents: 24738
diff changeset
  1410
previously.  Potential INCOMPATIBILITY:
23468
d27d79a47592 changed simp rules for of_nat
huffman
parents: 23449
diff changeset
  1411
  - "of_nat (Suc m)" simplifies to "1 + of_nat m" instead of "of_nat m + 1"
d27d79a47592 changed simp rules for of_nat
huffman
parents: 23449
diff changeset
  1412
  - of_nat_diff and of_nat_mult are no longer default simp rules
23377
197b6a39592c int abbreviates of_nat
huffman
parents: 23369
diff