# HG changeset patch
# User wenzelm
# Date 910622100 -3600
# Node ID 112a67aa9c2ccedbf83b6439a0631c30096788da
# Parent  996361157cfbf6cc57929f035ee43cdfbfeb718c
Pure outer syntax.

diff -r 996361157cfb -r 112a67aa9c2c src/Pure/Isar/isar_syn.ML
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/Isar/isar_syn.ML	Mon Nov 09 15:35:00 1998 +0100
@@ -0,0 +1,496 @@
+(*  Title:      Pure/Isar/isar_syn.ML
+    ID:         $Id$
+    Author:     Markus Wenzel, TU Muenchen
+
+Pure outer syntax.
+
+TODO:
+  - constdefs;
+  - axclass axioms: attribs;
+  - instance: theory_to_proof (with special attribute to add result arity);
+  - witness: eliminate (!?);
+  - result (interactive): print current result (?);
+  - check evaluation of transformers (exns!);
+  - print_thm: attributes;
+  - 'result' command;
+  - '--' (comment) option everywhere;
+  - 'chapter', 'section' etc.;
+*)
+
+signature ISAR_SYN =
+sig
+  val keywords: string list
+  val parsers: OuterSyntax.parser list
+end;
+
+structure IsarSyn: ISAR_SYN =
+struct
+
+open OuterParse;
+
+
+(** init and exit **)
+
+val contextP =
+  OuterSyntax.parser false "context" "switch theory context"
+    (name >> (fn x => Toplevel.print o Toplevel.init_theory (IsarThy.the_theory x) (K ())));
+
+val theoryP =
+  OuterSyntax.parser false "theory" "begin theory"
+    (name -- ($$$ "=" |-- !!! (enum "+" name --| (Scan.ahead eof || $$$ ":")))
+      >> (fn x => Toplevel.print o
+            Toplevel.init_theory (IsarThy.begin_theory x) IsarThy.end_theory));
+
+(*end current theory / sub-proof / excursion*)
+val endP =
+  OuterSyntax.parser false "end" "end current theory / sub-proof / excursion"
+    (Scan.succeed (Toplevel.print o Toplevel.exit o Toplevel.proof IsarThy.end_block));
+
+
+
+(** theory sections **)
+
+(* formal comments *)
+
+val textP = OuterSyntax.parser false "text" "formal comments"
+  (text >> K (Toplevel.keep (K ())));
+
+
+(* classes and sorts *)
+
+val classesP =
+  OuterSyntax.parser false "classes" "declare type classes"
+    (Scan.repeat1 (name -- Scan.optional ($$$ "<" |-- !!! (list1 xname)) [])
+      >> (Toplevel.theory o Theory.add_classes));
+
+val classrelP =
+  OuterSyntax.parser false "classrel" "state inclusion of type classes (axiomatic!)"
+    (xname -- ($$$ "<" |-- !!! xname) >> (Toplevel.theory o Theory.add_classrel o single));
+
+val defaultsortP =
+  OuterSyntax.parser false "defaultsort" "declare default sort"
+    (sort >> (Toplevel.theory o Theory.add_defsort));
+
+
+(* types *)
+
+val typedeclP =
+  OuterSyntax.parser false "typedecl" "declare logical type"
+    (type_args -- name -- opt_infix
+      >> (fn ((args, a), mx) => Toplevel.theory (PureThy.add_typedecls [(a, args, mx)])));
+
+val typeabbrP =
+  OuterSyntax.parser false "types" "declare type abbreviations"
+    (Scan.repeat1 (type_args -- name -- ($$$ "=" |-- !!! (typ -- opt_infix)))
+      >> (Toplevel.theory o Theory.add_tyabbrs o
+        map (fn ((args, a), (T, mx)) => (a, args, T, mx))));
+
+val nontermP =
+  OuterSyntax.parser false "nonterminals" "declare types treated as grammar nonterminal symbols"
+    (Scan.repeat1 name >> (Toplevel.theory o Theory.add_nonterminals));
+
+val aritiesP =
+  OuterSyntax.parser false "arities" "state type arities (axiomatic!)"
+    (Scan.repeat1 (xname -- ($$$ "::" |-- !!! arity) >> triple2)
+      >> (Toplevel.theory o Theory.add_arities));
+
+
+(* consts and syntax *)
+
+val constsP =
+  OuterSyntax.parser false "consts" "declare constants"
+    (Scan.repeat1 const >> (Toplevel.theory o Theory.add_consts));
+
+val opt_mode =
+  Scan.optional
+    ($$$ "(" |-- !!! (name -- Scan.optional ($$$ "output" >> K false) true --| $$$ ")"))
+    ("", true);
+
+val syntaxP =
+  OuterSyntax.parser false "syntax" "declare syntactic constants"
+    (opt_mode -- Scan.repeat1 const >> (Toplevel.theory o uncurry Theory.add_modesyntax));
+
+
+(* translations *)
+
+val trans_pat =
+  Scan.optional ($$$ "(" |-- !!! (xname --| $$$ ")")) "logic" -- string;
+
+fun trans_arrow toks =
+  ($$$ "=>" >> K Syntax.ParseRule ||
+    $$$ "<=" >> K Syntax.PrintRule ||
+    $$$ "==" >> K Syntax.ParsePrintRule) toks;
+
+val trans_line =
+  trans_pat -- !!! (trans_arrow -- trans_pat)
+    >> (fn (left, (arr, right)) => arr (left, right));
+
+val translationsP =
+  OuterSyntax.parser false "translations" "declare syntax translation rules"
+    (Scan.repeat1 trans_line >> (Toplevel.theory o Theory.add_trrules));
+
+
+(* axioms and definitions *)
+
+val spec = thm_name -- prop >> (fn ((x, y), z) => ((x, z), y));
+val spec' = opt_thm_name -- prop >> (fn ((x, y), z) => ((x, z), y));
+
+val axiomsP =
+  OuterSyntax.parser false "axioms" "state arbitrary propositions (axiomatic!)"
+    (Scan.repeat1 spec >> (Toplevel.theory o IsarThy.add_axioms));
+
+val defsP =
+  OuterSyntax.parser false "defs" "define constants"
+    (Scan.repeat1 spec' >> (Toplevel.theory o IsarThy.add_defs));
+
+
+(* axclass *)
+
+val axclassP =
+  OuterSyntax.parser false "axclass" "define axiomatic type class"
+    (name -- Scan.optional ($$$ "<" |-- !!! (list1 xname)) [] -- Scan.repeat (spec >> fst)
+      >> (Toplevel.theory o uncurry AxClass.add_axclass));
+
+
+(* instance *)
+
+val opt_witness =
+  Scan.optional ($$$ "(" |-- !!! (list1 xname --| $$$ ")")) [];
+
+val instanceP =
+  OuterSyntax.parser false "instance" "prove type arity"
+    ((xname -- ($$$ "<" |-- xname) >> AxClass.add_inst_subclass ||
+      xname -- ($$$ "::" |-- arity) >> (AxClass.add_inst_arity o triple2))
+    -- opt_witness >> (fn (f, x) => Toplevel.theory (f x [] None)));
+
+
+(* name space entry path *)
+
+val globalP =
+  OuterSyntax.parser false "global" "disable prefixing of theory name"
+    (Scan.succeed (Toplevel.theory PureThy.global_path));
+
+val localP =
+  OuterSyntax.parser false "local" "enable prefixing of theory name"
+    (Scan.succeed (Toplevel.theory PureThy.local_path));
+
+val pathP =
+  OuterSyntax.parser false "path" "modify name-space entry path"
+    (xname >> (Toplevel.theory o Theory.add_path));
+
+
+(* use ML text *)
+
+val useP =
+  OuterSyntax.parser true "use" "eval ML text from file"
+    (string >> IsarCmd.use);
+
+val mlP =
+  OuterSyntax.parser false "ML" "eval ML text"
+    (text >> (fn txt => IsarCmd.use_mltext txt o IsarCmd.use_mltext_theory txt));
+
+val setupP =
+  OuterSyntax.parser false "setup" "apply ML theory transformer"
+    (text >> (Toplevel.theory o IsarThy.use_setup));
+
+
+(* translation functions *)
+
+val parse_ast_translationP =
+  OuterSyntax.parser false "parse_ast_translation" "install parse ast translation functions"
+    (text >> (Toplevel.theory o IsarThy.parse_ast_translation));
+
+val parse_translationP =
+  OuterSyntax.parser false "parse_translation" "install parse translation functions"
+    (text >> (Toplevel.theory o IsarThy.parse_translation));
+
+val print_translationP =
+  OuterSyntax.parser false "print_translation" "install print translation functions"
+    (text >> (Toplevel.theory o IsarThy.print_translation));
+
+val typed_print_translationP =
+  OuterSyntax.parser false "typed_print_translation" "install typed print translation functions"
+    (text >> (Toplevel.theory o IsarThy.typed_print_translation));
+
+val print_ast_translationP =
+  OuterSyntax.parser false "print_ast_translation" "install print ast translation functions"
+    (text >> (Toplevel.theory o IsarThy.print_ast_translation));
+
+val token_translationP =
+  OuterSyntax.parser false "token_translation" "install token translation functions"
+    (text >> (Toplevel.theory o IsarThy.token_translation));
+
+
+(* oracles *)
+
+val oracleP =
+  OuterSyntax.parser false "oracle" "install oracle"
+    (name -- text >> (Toplevel.theory o IsarThy.add_oracle));
+
+
+
+(** proof commands **)
+
+(* statements *)
+
+fun statement f = opt_thm_name -- prop >> (fn ((x, y), z) => f x y z);
+
+val theoremP =
+  OuterSyntax.parser false "theorem" "state theorem"
+    (statement IsarThy.theorem >> (fn f => Toplevel.print o Toplevel.theory_to_proof f));
+
+val lemmaP =
+  OuterSyntax.parser false "lemma" "state lemma"
+    (statement IsarThy.lemma >> (fn f => Toplevel.print o Toplevel.theory_to_proof f));
+
+val showP =
+  OuterSyntax.parser false "show" "state local goal, solving current obligation"
+    (statement IsarThy.show >> (fn f => Toplevel.print o Toplevel.proof f));
+
+val haveP =
+  OuterSyntax.parser false "have" "state local goal"
+    (statement IsarThy.have >> (fn f => Toplevel.print o Toplevel.proof f));
+
+
+(* forward chaining *)
+
+val thenP =
+  OuterSyntax.parser false "then" "forward chaining"
+    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.chain));
+
+val fromP =
+  OuterSyntax.parser false "from" "forward chaining, from given facts"
+    (enum1 "," xname >> (fn x => Toplevel.print o Toplevel.proof (IsarThy.from_facts x)));
+
+
+(* proof context *)
+
+val assumeP =
+  OuterSyntax.parser false "assume" "assume propositions"
+    (opt_thm_name -- enum1 "," prop >>
+      (fn ((x, y), z) => Toplevel.print o Toplevel.proof (IsarThy.assume x y z)));
+
+val fixP =
+  OuterSyntax.parser false "fix" "fix variables (Skolem constants)"
+    (enum1 "," (name -- Scan.option ($$$ "::" |-- typ))
+      >> (fn xs => Toplevel.print o Toplevel.proof (IsarThy.fix xs)));
+
+val letP =
+  OuterSyntax.parser false "let" "bind text variables"
+    (enum1 "and" (term -- ($$$ "=" |-- term))
+      >> (fn bs => Toplevel.print o Toplevel.proof (IsarThy.match_bind bs)));
+
+
+(* proof structure *)
+
+val beginP =
+  OuterSyntax.parser false "begin" "begin block"
+    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.begin_block));
+
+val nextP =
+  OuterSyntax.parser false "next" "enter next block"
+    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.next_block));
+
+
+(* end proof *)
+
+val qedP =
+  OuterSyntax.parser false "qed" "conclude proof"
+    (Scan.succeed (Toplevel.proof_to_theory IsarThy.qed));
+
+val qed_withP =
+  OuterSyntax.parser true "qed_with" "conclude proof, may patch name and attributes"
+    (Scan.option name -- Scan.option attribs >> (Toplevel.proof_to_theory o IsarThy.qed_with));
+
+val kill_proofP =
+  OuterSyntax.parser true "kill" "abort current proof"
+    (Scan.succeed (Toplevel.print o Toplevel.proof_to_theory IsarThy.kill_proof));
+
+
+(* proof steps *)
+
+fun gen_stepP meth int name cmt f =
+  OuterSyntax.parser int name cmt
+    (meth >> (fn txt => Toplevel.print o Toplevel.proof (f txt)));
+
+val stepP = gen_stepP method;
+
+val tacP = stepP true "tac" "unstructured backward proof step, ignoring facts" IsarThy.tac;
+val etacP = stepP true "etac" "unstructured backward proof step, using facts" IsarThy.etac;
+
+
+val proofP = gen_stepP (Scan.option method) false "proof" "backward proof" IsarThy.proof;
+val terminal_proofP = stepP false "by" "terminal backward proof" IsarThy.terminal_proof;
+
+val trivial_proofP =
+  OuterSyntax.parser false "." "trivial proof"
+    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.trivial_proof));
+
+val default_proofP =
+  OuterSyntax.parser false ".." "default proof"
+    (Scan.succeed (Toplevel.print o Toplevel.proof IsarThy.default_proof));
+
+
+(* proof history *)
+
+val clear_undoP =
+  OuterSyntax.parser true "clear_undo" "clear proof command undo information"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.clear));
+
+val undoP =
+  OuterSyntax.parser true "undo" "undo proof command"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.undo));
+
+val redoP =
+  OuterSyntax.parser true "redo" "redo proof command"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.redo));
+
+val backP =
+  OuterSyntax.parser true "back" "backtracking of proof command"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.back));
+
+val prevP =
+  OuterSyntax.parser true "prev" "previous proof state"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.prev));
+
+val upP =
+  OuterSyntax.parser true "up" "upper proof state"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.up));
+
+val topP =
+  OuterSyntax.parser true "top" "to initial proof state"
+    (Scan.succeed (Toplevel.print o Toplevel.proof ProofHistory.top));
+
+
+
+(** diagnostic commands (for interactive mode only) **)
+
+val print_commandsP =
+  OuterSyntax.parser true "help" "print outer syntax (global)"
+    (Scan.succeed (Toplevel.imperative OuterSyntax.print_outer_syntax));
+
+val print_theoryP =
+  OuterSyntax.parser true "print_theory" "print logical theory contents (verbose!)"
+    (Scan.succeed IsarCmd.print_theory);
+
+val print_syntaxP =
+  OuterSyntax.parser true "print_syntax" "print inner syntax of theory (verbose!)"
+    (Scan.succeed IsarCmd.print_syntax);
+
+val print_attributesP =
+  OuterSyntax.parser true "print_attributes" "print attributes known in theory"
+    (Scan.succeed IsarCmd.print_attributes);
+
+val print_methodsP =
+  OuterSyntax.parser true "print_methods" "print methods known in theory"
+    (Scan.succeed IsarCmd.print_methods);
+
+val print_bindsP =
+  OuterSyntax.parser true "print_binds" "print term bindings of proof context"
+    (Scan.succeed IsarCmd.print_binds);
+
+val print_lthmsP =
+  OuterSyntax.parser true "print_facts" "print local theorems of proof context"
+    (Scan.succeed IsarCmd.print_lthms);
+
+val print_thmP =
+  OuterSyntax.parser true "print_thm" "print stored theorem(s)"
+    (xname >> IsarCmd.print_thms);
+
+val print_propP =
+  OuterSyntax.parser true "print_prop" "read and print proposition"
+    (term >> IsarCmd.print_prop);
+
+val print_termP =
+  OuterSyntax.parser true "print_term" "read and print term"
+    (term >> IsarCmd.print_term);
+
+val print_typeP =
+  OuterSyntax.parser true "print_type" "read and print type"
+    (typ >> IsarCmd.print_type);
+
+
+
+(** system commands (for interactive mode only) **)
+
+val cdP =
+  OuterSyntax.parser true "cd" "change current working directory"
+    (string >> IsarCmd.cd);
+
+val pwdP =
+  OuterSyntax.parser true "pwd" "print current working directory"
+    (Scan.succeed IsarCmd.pwd);
+
+val use_thyP =
+  OuterSyntax.parser true "use_thy" "use_thy theory file"
+    (string >> IsarCmd.use_thy);
+
+val loadP =
+  OuterSyntax.parser true "load" "load theory file"
+    (string >> IsarCmd.load);
+
+val prP =
+  OuterSyntax.parser true "pr" "print current toplevel state"
+    (Scan.succeed (Toplevel.print o Toplevel.imperative (K ())));
+
+
+val opt_unit = Scan.optional ($$$ "(" -- $$$ ")" >> (K ())) ();
+
+val commitP =
+  OuterSyntax.parser true "commit" "commit current session to ML database"
+    (opt_unit >> (K IsarCmd.use_commit));
+
+val quitP =
+  OuterSyntax.parser true "quit" "quit Isabelle"
+    (opt_unit >> (K IsarCmd.quit));
+
+val exitP =
+  OuterSyntax.parser true "exit" "exit Isar loop"
+    (Scan.succeed IsarCmd.exit);
+
+val breakP =
+  OuterSyntax.parser true "break" "discontinue execution"
+    (Scan.succeed IsarCmd.break);
+
+
+
+(** the Pure outer syntax **)
+
+(*keep keywords consistent with the parsers, including those in
+  outer_parse.ML, otherwise be prepared for unexpected errors*)
+
+val keywords =
+ ["(", ")", "*", "+", ",", ":", "::", ";", "<", "<=", "=", "==", "=>",
+  "?", "[", "]", "and", "binder", "infixl", "infixr", "mixfix", "output",
+  "{", "|", "}"];
+
+val parsers = [
+  (*theory structure*)
+  contextP, theoryP, endP,
+  (*theory sections*)
+  textP, classesP, classrelP, defaultsortP, typedeclP, typeabbrP,
+  nontermP, aritiesP, constsP, syntaxP, translationsP, axiomsP, defsP,
+  axclassP, instanceP, globalP, localP, pathP, useP, mlP, setupP,
+  parse_ast_translationP, parse_translationP, print_translationP,
+  typed_print_translationP, print_ast_translationP,
+  token_translationP, oracleP,
+  (*proof commands*)
+  theoremP, lemmaP, showP, haveP, assumeP, fixP, letP, thenP, fromP,
+  beginP, nextP, qedP, qed_withP, kill_proofP, tacP, etacP, proofP,
+  terminal_proofP, trivial_proofP, default_proofP, clear_undoP, undoP,
+  redoP, backP, prevP, upP, topP,
+  (*diagnostic commands*)
+  print_commandsP, print_theoryP, print_syntaxP, print_attributesP,
+  print_methodsP, print_bindsP, print_lthmsP, print_thmP, print_propP,
+  print_termP, print_typeP,
+  (*system commands*)
+  cdP, pwdP, use_thyP, loadP, prP, commitP, quitP, exitP, breakP];
+
+
+end;
+
+
+(* install the Pure outer syntax *)
+
+OuterSyntax.add_keywords IsarSyn.keywords;
+OuterSyntax.add_parsers IsarSyn.parsers;