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author | wenzelm |

Wed, 08 Apr 2015 11:13:53 +0200 | |

changeset 59951 | 8c49daca5d9f |

parent 59950 | 364b0512ce74 |

child 59952 | 550b74e9b08c |

misc tuning for release;

--- a/NEWS Tue Apr 07 18:22:06 2015 +0200 +++ b/NEWS Wed Apr 08 11:13:53 2015 +0200 @@ -26,40 +26,35 @@ * Command 'experiment' opens an anonymous locale context with private naming policy. -* Structural composition of proof methods (meth1; meth2) in Isar -corresponds to (tac1 THEN_ALL_NEW tac2) in ML. - -* Generated schematic variables in standard format of exported facts are -incremented to avoid material in the proof context. Rare -INCOMPATIBILITY, explicit instantiation sometimes needs to refer to -different index. +* Command 'notepad' requires proper nesting of begin/end and its proof +structure in the body: 'oops' is no longer supported here. Minor +INCOMPATIBILITY, use 'sorry' instead. + +* Command 'named_theorems' declares a dynamic fact within the context, +together with an attribute to maintain the content incrementally. This +supersedes functor Named_Thms in Isabelle/ML, but with a subtle change +of semantics due to external visual order vs. internal reverse order. + +* 'find_theorems': search patterns which are abstractions are +schematically expanded before search. Search results match the naive +expectation more closely, particularly wrt. abbreviations. +INCOMPATIBILITY. * Commands 'method_setup' and 'attribute_setup' now work within a local theory context. -* Command 'named_theorems' declares a dynamic fact within the context, -together with an attribute to maintain the content incrementally. This -supersedes functor Named_Thms, but with a subtle change of semantics due -to external visual order vs. internal reverse order. - -* Command 'notepad' requires proper nesting of begin/end and its proof -structure in the body: 'oops' is no longer supported here. Minor -INCOMPATIBILITY, use 'sorry' instead. - * Outer syntax commands are managed authentically within the theory context, without implicit global state. Potential for accidental INCOMPATIBILITY, make sure that required theories are really imported. -* 'find_theorems': search patterns which are abstractions are -schematically expanded before search. Search results match the naive -expectation more closely, particularly wrt. abbreviations. -INCOMPATIBILITY. +* Structural composition of proof methods (meth1; meth2) in Isar +corresponds to (tac1 THEN_ALL_NEW tac2) in ML. *** Prover IDE -- Isabelle/Scala/jEdit *** -* Old graph browser (Java/AWT 1.0) is superseded by improved graphview -panel, which also includes PDF output. +* Old graph browser (Java/AWT 1.1) is superseded by improved graphview +panel, which also produces PDF output without external tools. * Improved folding mode "isabelle" based on Isar syntax. Alternatively, the "sidekick" mode may be used for document structure. @@ -79,6 +74,43 @@ Options / Text Area). +*** Document preparation *** + +* Discontinued obsolete option "document_graph": session_graph.pdf is +produced unconditionally for HTML browser_info and PDF-LaTeX document. + +* Document markup commands 'chapter', 'section', 'subsection', +'subsubsection', 'text', 'txt', 'text_raw' work uniformly in any +context, even before the initial 'theory' command. Obsolete proof +commands 'sect', 'subsect', 'subsubsect', 'txt_raw' have been +discontinued, use 'section', 'subsection', 'subsubsection', 'text_raw' +instead. The old 'header' command is still retained for some time, but +should be replaced by 'chapter', 'section' etc. (using "isabelle +update_header"). Minor INCOMPATIBILITY. + +* Diagnostic commands and document markup commands within a proof do not +affect the command tag for output. Thus commands like 'thm' are subject +to proof document structure, and no longer "stick out" accidentally. +Commands 'text' and 'txt' merely differ in the LaTeX style, not their +tags. Potential INCOMPATIBILITY in exotic situations. + +* System option "pretty_margin" is superseded by "thy_output_margin", +which is also accessible via document antiquotation option "margin". +Only the margin for document output may be changed, but not the global +pretty printing: that is 76 for plain console output, and adapted +dynamically in GUI front-ends. Implementations of document +antiquotations need to observe the margin explicitly according to +Thy_Output.string_of_margin. Minor INCOMPATIBILITY. + +* Official support for "tt" style variants, via \isatt{...} or +\begin{isabellett}...\end{isabellett}. The somewhat fragile \verb or +verbatim environment of LaTeX is no longer used. This allows @{ML} etc. +as argument to other macros (such as footnotes). + +* Document antiquotation @{verbatim} prints ASCII text literally in "tt" +style. + + *** Pure *** * Explicit instantiation via attributes "where", "of", and proof methods @@ -94,6 +126,11 @@ declare rule_insts_schematic = true temporarily and update to use local variable declarations or dummy patterns instead. +* Generated schematic variables in standard format of exported facts are +incremented to avoid material in the proof context. Rare +INCOMPATIBILITY, explicit instantiation sometimes needs to refer to +different index. + * Command "class_deps" takes optional sort arguments constraining the search space. @@ -109,43 +146,44 @@ *** HOL *** -* Given up separate type class no_zero_divisors in favour of fully algebraic -semiring_no_zero_divisors. INCOMPATIBILITY. +* Given up separate type class no_zero_divisors in favour of fully +algebraic semiring_no_zero_divisors. INCOMPATIBILITY. * Class linordered_semidom really requires no zero divisors. INCOMPATIBILITY. * Classes division_ring, field and linordered_field always demand -`inverse 0 = 0`. Given up separate classes division_ring_inverse_zero, -field_inverse_zero and linordered_field_inverse_zero. -INCOMPATIBILITY. +"inverse 0 = 0". Given up separate classes division_ring_inverse_zero, +field_inverse_zero and linordered_field_inverse_zero. INCOMPATIBILITY. * Type classes cancel_ab_semigroup_add / cancel_monoid_add specify -explicit additive inverse operation. INCOMPATIBILITY. - -* New proof method "rewrite" (in ~~/src/HOL/Library/Rewrite) for - single-step rewriting with subterm selection based on patterns. - -* The functions "sin" and "cos" are now defined for any "'{real_normed_algebra_1,banach}" - type, so in particular on "real" and "complex" uniformly. - Minor INCOMPATIBILITY: type constraints may be needed. - -* New library of properties of the complex transcendental functions sin, cos, tan, exp, - Ln, Arctan, Arcsin, Arccos. Ported from HOL Light. - -* The factorial function, "fact", now has type "nat => 'a" (of a sort that admits - numeric types including nat, int, real and complex. INCOMPATIBILITY: - an expression such as "fact 3 = 6" may require a type constraint, and the combination - "real (fact k)" is likely to be unsatisfactory. If a type conversion is still necessary, - then use "of_nat (fact k)" or "real_of_nat (fact k)". - -* removed functions "natfloor" and "natceiling", - use "nat o floor" and "nat o ceiling" instead. - A few of the lemmas have been retained and adapted: in their names - "natfloor"/"natceiling" has been replaced by "nat_floor"/"nat_ceiling". - -* Qualified some duplicated fact names required for boostrapping -the type class hierarchy: +explicit additive inverse operation. INCOMPATIBILITY. + +* New proof method "rewrite" (in theory ~~/src/HOL/Library/Rewrite) for +single-step rewriting with subterm selection based on patterns. + +* The functions "sin" and "cos" are now defined for any +"'{real_normed_algebra_1,banach}" type, so in particular on "real" and +"complex" uniformly. Minor INCOMPATIBILITY: type constraints may be +needed. + +* New library of properties of the complex transcendental functions sin, +cos, tan, exp, Ln, Arctan, Arcsin, Arccos. Ported from HOL Light. + +* The factorial function, "fact", now has type "nat => 'a" (of a sort +that admits numeric types including nat, int, real and complex. +INCOMPATIBILITY: an expression such as "fact 3 = 6" may require a type +constraint, and the combination "real (fact k)" is likely to be +unsatisfactory. If a type conversion is still necessary, then use +"of_nat (fact k)" or "real_of_nat (fact k)". + +* Removed functions "natfloor" and "natceiling", use "nat o floor" and +"nat o ceiling" instead. A few of the lemmas have been retained and +adapted: in their names "natfloor"/"natceiling" has been replaced by +"nat_floor"/"nat_ceiling". + +* Qualified some duplicated fact names required for boostrapping the +type class hierarchy: ab_add_uminus_conv_diff ~> diff_conv_add_uminus field_inverse_zero ~> inverse_zero field_divide_inverse ~> divide_inverse @@ -160,13 +198,7 @@ * Fact consolidation: even_less_0_iff is subsumed by double_add_less_zero_iff_single_add_less_zero (simp by default anyway). -* Discontinued old-fashioned "codegen" tool. Code generation can always -be externally triggered using an appropriate ROOT file plus a -corresponding theory. Parametrization is possible using environment -variables, or ML snippets in the most extreme cases. Minor -INCOMPATIBILITY. - -* Add NO_MATCH-simproc, allows to check for syntactic non-equality +* Add NO_MATCH-simproc, allows to check for syntactic non-equality. * Generalized and consolidated some theorems concerning divsibility: dvd_reduce ~> dvd_add_triv_right_iff @@ -175,18 +207,17 @@ Minor INCOMPATIBILITY. * "even" and "odd" are mere abbreviations for "2 dvd _" and "~ 2 dvd _" -and part of HOL-Main. +and part of theory Main. even_def ~> even_iff_mod_2_eq_zero INCOMPATIBILITY. -* Lemma name consolidation: divide_Numeral1 ~> divide_numeral_1 -Minor INCOMPATIBILITY. +* Lemma name consolidation: divide_Numeral1 ~> divide_numeral_1. Minor +INCOMPATIBILITY. * field_simps: Use NO_MATCH-simproc for distribution rules, to avoid - non-termination in case of distributing a division. With this change - field_simps is in some cases slightly less powerful, if it fails try - to add algebra_simps, or use divide_simps. -Minor INCOMPATIBILITY. +non-termination in case of distributing a division. With this change +field_simps is in some cases slightly less powerful, if it fails try to +add algebra_simps, or use divide_simps. Minor INCOMPATIBILITY. * Bootstrap of listsum as special case of abstract product over lists. Fact rename: @@ -194,7 +225,7 @@ INCOMPATIBILITY. * Command and antiquotation "value" provide different evaluation slots -(again), where the previous strategy (nbe after ML) serves as default. +(again), where the previous strategy (NBE after ML) serves as default. Minor INCOMPATIBILITY. * New (co)datatype package: @@ -284,7 +315,7 @@ - New option 'smt_statistics' to display statistics of the new 'smt' method, especially runtime statistics of Z3 proof reconstruction. -* List: renamed drop_Suc_conv_tl and nth_drop' to Cons_nth_drop_Suc +* List: renamed drop_Suc_conv_tl and nth_drop' to Cons_nth_drop_Suc. * New infrastructure for compiling, running, evaluating and testing generated code in target languages in HOL/Library/Code_Test. See @@ -330,44 +361,26 @@ projection -*** Document preparation *** - -* Discontinued obsolete option "document_graph": session_graph.pdf is -produced unconditionally for HTML browser_info and PDF-LaTeX document. - -* Document markup commands 'chapter', 'section', 'subsection', -'subsubsection', 'text', 'txt', 'text_raw' work uniformly in any -context, even before the initial 'theory' command. Obsolete proof -commands 'sect', 'subsect', 'subsubsect', 'txt_raw' have been -discontinued, use 'section', 'subsection', 'subsubsection', 'text_raw' -instead. The old 'header' command is still retained for some time, but -should be replaced by 'chapter', 'section' etc. (using "isabelle -update_header"). Minor INCOMPATIBILITY. - -* Diagnostic commands and document markup commands within a proof do not -affect the command tag for output. Thus commands like 'thm' are subject -to proof document structure, and no longer "stick out" accidentally. -Commands 'text' and 'txt' merely differ in the LaTeX style, not their -tags. Potential INCOMPATIBILITY in exotic situations. - -* Official support for "tt" style variants, via \isatt{...} or -\begin{isabellett}...\end{isabellett}. The somewhat fragile \verb or -verbatim environment of LaTeX is no longer used. This allows @{ML} etc. -as argument to other macros (such as footnotes). - -* Document antiquotation @{verbatim} prints ASCII text literally in "tt" -style. - - *** ML *** -* Subtle change of name space policy: undeclared entries are now -considered inaccessible, instead of accessible via the fully-qualified -internal name. This mainly affects Name_Space.intern (and derivatives), -which may produce an unexpected Long_Name.hidden prefix. Note that -contempory applications use the strict Name_Space.check (and -derivatives) instead, which is not affected by the change. Potential -INCOMPATIBILITY in rare applications of Name_Space.intern. +* Cartouches within ML sources are turned into values of type +Input.source (with formal position information). + +* Basic combinators map, fold, fold_map, split_list, apply are available +as parameterized antiquotations, e.g. @{map 4} for lists of quadruples. + +* Renamed "pairself" to "apply2", in accordance to @{apply 2}. +INCOMPATIBILITY. + +* Former combinators NAMED_CRITICAL and CRITICAL for central critical +sections have been discontinued, in favour of the more elementary +Multithreading.synchronized and its high-level derivative +Synchronized.var (which is usually sufficient in applications). Subtle +INCOMPATIBILITY: synchronized access needs to be atomic and cannot be +nested. + +* Synchronized.value (ML) is actually synchronized (as in Scala): +subtle change of semantics with minimal potential for INCOMPATIBILITY. * The main operations to certify logical entities are Thm.ctyp_of and Thm.cterm_of with a local context; old-style global theory variants are @@ -378,15 +391,13 @@ INCOMPATIBILITY, need to use qualified Thm.prop_of, Thm.cterm_of, Thm.term_of etc. -* Former combinators NAMED_CRITICAL and CRITICAL for central critical -sections have been discontinued, in favour of the more elementary -Multithreading.synchronized and its high-level derivative -Synchronized.var (which is usually sufficient in applications). Subtle -INCOMPATIBILITY: synchronized access needs to be atomic and cannot be -nested. - -* Cartouches within ML sources are turned into values of type -Input.source (with formal position information). +* Subtle change of name space policy: undeclared entries are now +considered inaccessible, instead of accessible via the fully-qualified +internal name. This mainly affects Name_Space.intern (and derivatives), +which may produce an unexpected Long_Name.hidden prefix. Note that +contempory applications use the strict Name_Space.check (and +derivatives) instead, which is not affected by the change. Potential +INCOMPATIBILITY in rare applications of Name_Space.intern. * Proper context for various elementary tactics: assume_tac, resolve_tac, eresolve_tac, dresolve_tac, forward_tac, match_tac, @@ -395,16 +406,6 @@ * Tactical PARALLEL_ALLGOALS is the most common way to refer to PARALLEL_GOALS. -* Basic combinators map, fold, fold_map, split_list, apply are -available as parameterized antiquotations, e.g. @{map 4} for lists of -quadruples. - -* Renamed "pairself" to "apply2", in accordance to @{apply 2}. -INCOMPATIBILITY. - -* Synchronized.value (ML) is actually synchronized (as in Scala): -subtle change of semantics with minimal potential for INCOMPATIBILITY. - * Goal.prove_multi is superseded by the fully general Goal.prove_common, which also allows to specify a fork priority. @@ -415,8 +416,16 @@ *** System *** -* Support for Proof General and Isar TTY loop has been discontinued. -Minor INCOMPATIBILITY. +* The Isabelle tool "update_cartouches" changes theory files to use +cartouches instead of old-style {* verbatim *} or `alt_string` tokens. + +* The Isabelle tool "build" provides new options -k and -x. + +* Discontinued old-fashioned "codegen" tool. Code generation can always +be externally triggered using an appropriate ROOT file plus a +corresponding theory. Parametrization is possible using environment +variables, or ML snippets in the most extreme cases. Minor +INCOMPATIBILITY. * JVM system property "isabelle.threads" determines size of Scala thread pool, like Isabelle system option "threads" for ML. @@ -425,22 +434,12 @@ look-and-feel, via internal class name or symbolic name as in the jEdit menu Global Options / Appearance. -* System option "pretty_margin" is superseded by "thy_output_margin", -which is also accessible via document antiquotation option "margin". -Only the margin for document output may be changed, but not the global -pretty printing: that is 76 for plain console output, and adapted -dynamically in GUI front-ends. Implementations of document -antiquotations need to observe the margin explicitly according to -Thy_Output.string_of_margin. Minor INCOMPATIBILITY. - * Historical command-line terminator ";" is no longer accepted. Minor INCOMPATIBILITY, use "isabelle update_semicolons" to remove obsolete semicolons from theory sources. -* The Isabelle tool "update_cartouches" changes theory files to use -cartouches instead of old-style {* verbatim *} or `alt_string` tokens. - -* The Isabelle tool "build" provides new options -k and -x. +* Support for Proof General and Isar TTY loop has been discontinued. +Minor INCOMPATIBILITY.