author | wenzelm |
Sat, 19 Apr 2014 17:23:05 +0200 | |
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parent 55236 | 8d61b0aa7a0d |
child 56812 | baef1c110f12 |
permissions | -rw-r--r-- |
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(* Title: Tools/Code/code_printer.ML |
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Author: Florian Haftmann, TU Muenchen |
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Generic operations for pretty printing of target language code. |
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*) |
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signature CODE_PRINTER = |
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sig |
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type itype = Code_Thingol.itype |
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type iterm = Code_Thingol.iterm |
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type const = Code_Thingol.const |
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type dict = Code_Thingol.dict |
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val eqn_error: theory -> thm option -> string -> 'a |
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val @@ : 'a * 'a -> 'a list |
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val @| : 'a list * 'a -> 'a list |
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val str: string -> Pretty.T |
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val concat: Pretty.T list -> Pretty.T |
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val brackets: Pretty.T list -> Pretty.T |
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val enclose: string -> string -> Pretty.T list -> Pretty.T |
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val commas: Pretty.T list -> Pretty.T list |
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val enum: string -> string -> string -> Pretty.T list -> Pretty.T |
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val enum_default: string -> string -> string -> string -> Pretty.T list -> Pretty.T |
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val semicolon: Pretty.T list -> Pretty.T |
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val doublesemicolon: Pretty.T list -> Pretty.T |
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val indent: int -> Pretty.T -> Pretty.T |
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val markup_stmt: Code_Symbol.T -> Pretty.T -> Pretty.T |
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val format: Code_Symbol.T list -> int -> Pretty.T -> string |
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val first_upper: string -> string |
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val first_lower: string -> string |
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type var_ctxt |
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val make_vars: string list -> var_ctxt |
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val intro_vars: string list -> var_ctxt -> var_ctxt |
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val lookup_var: var_ctxt -> string -> string |
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val intro_base_names: (string -> bool) -> (string -> string) |
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-> string list -> var_ctxt -> var_ctxt |
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val intro_base_names_for: (string -> bool) -> (Code_Symbol.T -> string) |
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-> iterm list -> var_ctxt -> var_ctxt |
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val aux_params: var_ctxt -> iterm list list -> string list |
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type literals |
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val Literals: { literal_char: string -> string, literal_string: string -> string, |
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literal_numeral: int -> string, |
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literal_list: Pretty.T list -> Pretty.T, infix_cons: int * string } |
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-> literals |
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val literal_char: literals -> string -> string |
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val literal_string: literals -> string -> string |
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val literal_numeral: literals -> int -> string |
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val literal_list: literals -> Pretty.T list -> Pretty.T |
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val infix_cons: literals -> int * string |
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type lrx |
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val L: lrx |
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val R: lrx |
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val X: lrx |
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type fixity |
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val BR: fixity |
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val NOBR: fixity |
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val INFX: int * lrx -> fixity |
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val APP: fixity |
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val brackify: fixity -> Pretty.T list -> Pretty.T |
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val brackify_infix: int * lrx -> fixity -> Pretty.T * Pretty.T * Pretty.T -> Pretty.T |
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val brackify_block: fixity -> Pretty.T -> Pretty.T list -> Pretty.T -> Pretty.T |
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val gen_applify: bool -> string -> string -> ('a -> Pretty.T) -> fixity -> Pretty.T -> 'a list -> Pretty.T |
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val applify: string -> string -> ('a -> Pretty.T) -> fixity -> Pretty.T -> 'a list -> Pretty.T |
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val tuplify: (fixity -> 'a -> Pretty.T) -> fixity -> 'a list -> Pretty.T option |
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type raw_const_syntax |
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val plain_const_syntax: string -> raw_const_syntax |
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type simple_const_syntax |
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val simple_const_syntax: simple_const_syntax -> raw_const_syntax |
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type complex_const_syntax |
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val complex_const_syntax: complex_const_syntax -> raw_const_syntax |
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val parse_const_syntax: raw_const_syntax parser |
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val requires_args: raw_const_syntax -> int |
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datatype const_printer = Plain_printer of string |
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| Complex_printer of (var_ctxt -> fixity -> iterm -> Pretty.T) |
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-> thm option -> var_ctxt -> fixity -> (iterm * itype) list -> Pretty.T |
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type const_syntax = int * const_printer |
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val prep_const_syntax: theory -> literals |
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-> string -> raw_const_syntax -> const_syntax |
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type tyco_syntax |
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val parse_tyco_syntax: tyco_syntax parser |
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val gen_print_app: (thm option -> var_ctxt -> const * iterm list -> Pretty.T list) |
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-> (thm option -> var_ctxt -> fixity -> iterm -> Pretty.T) |
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-> (string -> const_syntax option) |
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-> thm option -> var_ctxt -> fixity -> const * iterm list -> Pretty.T |
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val gen_print_bind: (thm option -> var_ctxt -> fixity -> iterm -> Pretty.T) |
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-> thm option -> fixity |
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-> iterm -> var_ctxt -> Pretty.T * var_ctxt |
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end; |
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structure Code_Printer : CODE_PRINTER = |
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struct |
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open Basic_Code_Symbol; |
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open Code_Thingol; |
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(** generic nonsense *) |
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fun eqn_error thy (SOME thm) s = |
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error (s ^ ",\nin equation " ^ Display.string_of_thm_global thy thm) |
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| eqn_error _ NONE s = error s; |
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val code_presentationN = "code_presentation"; |
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val stmt_nameN = "stmt_name"; |
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val _ = Markup.add_mode code_presentationN YXML.output_markup; |
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(** assembling and printing text pieces **) |
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infixr 5 @@; |
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infixr 5 @|; |
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fun x @@ y = [x, y]; |
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fun xs @| y = xs @ [y]; |
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val str = Print_Mode.setmp [] Pretty.str; |
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val concat = Pretty.block o Pretty.breaks; |
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val commas = Print_Mode.setmp [] Pretty.commas; |
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fun enclose l r = Print_Mode.setmp [] (Pretty.enclose l r); |
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val brackets = enclose "(" ")" o Pretty.breaks; |
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fun enum sep l r = Print_Mode.setmp [] (Pretty.enum sep l r); |
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fun enum_default default sep l r [] = str default |
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| enum_default default sep l r xs = enum sep l r xs; |
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fun semicolon ps = Pretty.block [concat ps, str ";"]; |
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fun doublesemicolon ps = Pretty.block [concat ps, str ";;"]; |
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fun indent i = Print_Mode.setmp [] (Pretty.indent i); |
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fun markup_stmt sym = Print_Mode.setmp [code_presentationN] |
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(Pretty.mark (code_presentationN, [(stmt_nameN, Code_Symbol.marker sym)])); |
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fun filter_presentation [] tree = |
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Buffer.empty |
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|> fold XML.add_content tree |
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| filter_presentation presentation_syms tree = |
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let |
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val presentation_idents = map Code_Symbol.marker presentation_syms |
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fun is_selected (name, attrs) = |
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name = code_presentationN |
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andalso member (op =) presentation_idents (the (Properties.get attrs stmt_nameN)); |
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fun add_content_with_space tree (is_first, buf) = |
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buf |
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|> not is_first ? Buffer.add "\n\n" |
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|> XML.add_content tree |
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|> pair false; |
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fun filter (XML.Elem (name_attrs, xs)) = |
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fold (if is_selected name_attrs then add_content_with_space else filter) xs |
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| filter (XML.Text _) = I; |
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in snd (fold filter tree (true, Buffer.empty)) end; |
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fun format presentation_names width = |
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Print_Mode.setmp [code_presentationN] (Pretty.string_of_margin width) |
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#> YXML.parse_body |
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#> filter_presentation presentation_names |
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#> Buffer.add "\n" |
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#> Buffer.content; |
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(** names and variable name contexts **) |
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type var_ctxt = string Symtab.table * Name.context; |
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fun make_vars names = (fold (fn name => Symtab.update_new (name, name)) names Symtab.empty, |
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Name.make_context names); |
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fun intro_vars names (namemap, namectxt) = |
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let |
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val (names', namectxt') = fold_map Name.variant names namectxt; |
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val namemap' = fold2 (curry Symtab.update) names names' namemap; |
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in (namemap', namectxt') end; |
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fun lookup_var (namemap, _) name = |
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case Symtab.lookup namemap name of |
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SOME name' => name' |
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| NONE => error ("Invalid name in context: " ^ quote name); |
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val first_upper = implode o nth_map 0 Symbol.to_ascii_upper o raw_explode; |
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val first_lower = implode o nth_map 0 Symbol.to_ascii_lower o raw_explode; |
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fun aux_params vars lhss = |
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let |
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fun fish_param _ (w as SOME _) = w |
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| fish_param (IVar (SOME v)) NONE = SOME v |
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| fish_param _ NONE = NONE; |
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fun fillup_param _ (_, SOME v) = v |
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| fillup_param x (i, NONE) = x ^ string_of_int i; |
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val fished1 = fold (map2 fish_param) lhss (replicate (length (hd lhss)) NONE); |
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val x = singleton (Name.variant_list (map_filter I fished1)) "x"; |
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val fished2 = map_index (fillup_param x) fished1; |
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val (fished3, _) = fold_map Name.variant fished2 Name.context; |
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val vars' = intro_vars fished3 vars; |
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in map (lookup_var vars') fished3 end; |
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fun intro_base_names no_syntax deresolve = |
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map_filter (fn name => if no_syntax name then |
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let val name' = deresolve name in |
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if Long_Name.is_qualified name' then NONE else SOME name' |
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end else NONE) |
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#> intro_vars; |
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201 |
|
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202 |
fun intro_base_names_for no_syntax deresolve ts = |
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203 |
[] |
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|> fold Code_Thingol.add_constsyms ts |
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|> intro_base_names (fn Constant const => no_syntax const | _ => true) deresolve; |
32913 | 206 |
|
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207 |
|
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208 |
(** pretty literals **) |
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209 |
|
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210 |
datatype literals = Literals of { |
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literal_char: string -> string, |
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literal_string: string -> string, |
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literal_numeral: int -> string, |
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literal_list: Pretty.T list -> Pretty.T, |
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infix_cons: int * string |
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216 |
}; |
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217 |
|
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fun dest_Literals (Literals lits) = lits; |
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219 |
|
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val literal_char = #literal_char o dest_Literals; |
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val literal_string = #literal_string o dest_Literals; |
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val literal_numeral = #literal_numeral o dest_Literals; |
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val literal_list = #literal_list o dest_Literals; |
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val infix_cons = #infix_cons o dest_Literals; |
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225 |
|
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226 |
|
28060 | 227 |
(** syntax printer **) |
228 |
||
229 |
(* binding priorities *) |
|
230 |
||
231 |
datatype lrx = L | R | X; |
|
232 |
||
233 |
datatype fixity = |
|
234 |
BR |
|
235 |
| NOBR |
|
236 |
| INFX of (int * lrx); |
|
237 |
||
238 |
val APP = INFX (~1, L); |
|
239 |
||
240 |
fun fixity_lrx L L = false |
|
241 |
| fixity_lrx R R = false |
|
242 |
| fixity_lrx _ _ = true; |
|
243 |
||
244 |
fun fixity NOBR _ = false |
|
245 |
| fixity _ NOBR = false |
|
52433 | 246 |
| fixity (INFX (pr, lr)) (INFX (pr_ctxt, lr_ctxt)) = |
247 |
pr < pr_ctxt |
|
248 |
orelse pr = pr_ctxt |
|
28060 | 249 |
andalso fixity_lrx lr lr_ctxt |
52433 | 250 |
orelse pr_ctxt = ~1 |
28060 | 251 |
| fixity BR (INFX _) = false |
252 |
| fixity _ _ = true; |
|
253 |
||
254 |
fun gen_brackify _ [p] = p |
|
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255 |
| gen_brackify true (ps as _::_) = enclose "(" ")" ps |
28060 | 256 |
| gen_brackify false (ps as _::_) = Pretty.block ps; |
257 |
||
258 |
fun brackify fxy_ctxt = |
|
259 |
gen_brackify (fixity BR fxy_ctxt) o Pretty.breaks; |
|
260 |
||
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fun brackify_infix infx fxy_ctxt (l, m, r) = |
50627 | 262 |
gen_brackify (fixity (INFX infx) fxy_ctxt) [l, str " ", m, Pretty.brk 1, r]; |
28060 | 263 |
|
31665 | 264 |
fun brackify_block fxy_ctxt p1 ps p2 = |
265 |
let val p = Pretty.block_enclose (p1, p2) ps |
|
266 |
in if fixity BR fxy_ctxt |
|
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then enclose "(" ")" [p] |
31665 | 268 |
else p |
269 |
end; |
|
270 |
||
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271 |
fun gen_applify strict opn cls f fxy_ctxt p [] = |
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272 |
if strict |
50628 | 273 |
then gen_brackify (fixity BR fxy_ctxt) [p, str (opn ^ cls)] |
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274 |
else p |
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275 |
| gen_applify strict opn cls f fxy_ctxt p ps = |
50627 | 276 |
gen_brackify (fixity BR fxy_ctxt) (p @@ enum "," opn cls (map f ps)); |
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|
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278 |
fun applify opn = gen_applify false opn; |
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279 |
|
38922 | 280 |
fun tuplify _ _ [] = NONE |
281 |
| tuplify print fxy [x] = SOME (print fxy x) |
|
282 |
| tuplify print _ xs = SOME (enum "," "(" ")" (map (print NOBR) xs)); |
|
283 |
||
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|
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285 |
(* generic syntax *) |
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|
287 |
type simple_const_syntax = int * ((fixity -> iterm -> Pretty.T) |
|
288 |
-> fixity -> (iterm * itype) list -> Pretty.T); |
|
37881 | 289 |
|
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290 |
type complex_const_syntax = int * (literals |
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291 |
-> (var_ctxt -> fixity -> iterm -> Pretty.T) |
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292 |
-> thm option -> var_ctxt -> fixity -> (iterm * itype) list -> Pretty.T); |
37881 | 293 |
|
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294 |
datatype raw_const_syntax = plain_const_syntax of string |
37881 | 295 |
| complex_const_syntax of complex_const_syntax; |
296 |
||
34176 | 297 |
fun simple_const_syntax syn = |
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298 |
complex_const_syntax |
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299 |
(apsnd (fn f => fn _ => fn print => fn _ => fn vars => f (print vars)) syn); |
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|
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301 |
fun requires_args (plain_const_syntax _) = 0 |
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302 |
| requires_args (complex_const_syntax (k, _)) = k; |
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303 |
|
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304 |
datatype const_printer = Plain_printer of string |
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|
305 |
| Complex_printer of (var_ctxt -> fixity -> iterm -> Pretty.T) |
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|
306 |
-> thm option -> var_ctxt -> fixity -> (iterm * itype) list -> Pretty.T; |
37881 | 307 |
|
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308 |
type const_syntax = int * const_printer; |
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309 |
|
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310 |
fun prep_const_syntax thy literals c (plain_const_syntax s) = |
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311 |
(Code.args_number thy c, Plain_printer s) |
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|
312 |
| prep_const_syntax thy literals c (complex_const_syntax (n, f))= |
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|
313 |
(n, Complex_printer (f literals)); |
37881 | 314 |
|
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315 |
fun gen_print_app print_app_expr print_term const_syntax some_thm vars fxy |
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316 |
(app as ({ sym, dom, ... }, ts)) = |
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317 |
case sym of |
55150 | 318 |
Constant const => (case const_syntax const of |
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|
319 |
NONE => brackify fxy (print_app_expr some_thm vars app) |
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|
320 |
| SOME (_, Plain_printer s) => |
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|
321 |
brackify fxy (str s :: map (print_term some_thm vars BR) ts) |
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|
322 |
| SOME (k, Complex_printer print) => |
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|
323 |
let |
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|
324 |
fun print' fxy ts = |
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|
325 |
print (print_term some_thm) some_thm vars fxy (ts ~~ take k dom); |
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|
326 |
in |
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|
327 |
if k = length ts |
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|
328 |
then print' fxy ts |
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|
329 |
else if k < length ts |
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|
330 |
then case chop k ts of (ts1, ts2) => |
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|
331 |
brackify fxy (print' APP ts1 :: map (print_term some_thm vars BR) ts2) |
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|
332 |
else print_term some_thm vars fxy (Code_Thingol.eta_expand k app) |
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|
333 |
end) |
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|
334 |
| _ => brackify fxy (print_app_expr some_thm vars app); |
28060 | 335 |
|
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|
336 |
fun gen_print_bind print_term thm (fxy : fixity) pat vars = |
28060 | 337 |
let |
31889 | 338 |
val vs = Code_Thingol.fold_varnames (insert (op =)) pat []; |
31874 | 339 |
val vars' = intro_vars vs vars; |
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|
340 |
in (print_term thm vars' fxy pat, vars') end; |
28060 | 341 |
|
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342 |
type tyco_syntax = int * ((fixity -> itype -> Pretty.T) |
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|
343 |
-> fixity -> itype list -> Pretty.T); |
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|
344 |
|
28060 | 345 |
|
346 |
(* mixfix syntax *) |
|
347 |
||
348 |
datatype 'a mixfix = |
|
349 |
Arg of fixity |
|
37881 | 350 |
| String of string |
351 |
| Break; |
|
28060 | 352 |
|
52069 | 353 |
fun printer_of_mixfix prep_arg (fixity_this, mfx) = |
28060 | 354 |
let |
355 |
fun is_arg (Arg _) = true |
|
356 |
| is_arg _ = false; |
|
357 |
val i = (length o filter is_arg) mfx; |
|
358 |
fun fillin _ [] [] = |
|
359 |
[] |
|
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360 |
| fillin print (Arg fxy :: mfx) (a :: args) = |
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|
361 |
(print fxy o prep_arg) a :: fillin print mfx args |
37881 | 362 |
| fillin print (String s :: mfx) args = |
363 |
str s :: fillin print mfx args |
|
364 |
| fillin print (Break :: mfx) args = |
|
365 |
Pretty.brk 1 :: fillin print mfx args; |
|
28060 | 366 |
in |
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|
367 |
(i, fn print => fn fixity_ctxt => fn args => |
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|
368 |
gen_brackify (fixity fixity_this fixity_ctxt) (fillin print mfx args)) |
28060 | 369 |
end; |
370 |
||
52069 | 371 |
fun read_infix (fixity_this, i) s = |
28060 | 372 |
let |
52069 | 373 |
val l = case fixity_this of L => INFX (i, L) | _ => INFX (i, X); |
374 |
val r = case fixity_this of R => INFX (i, R) | _ => INFX (i, X); |
|
28060 | 375 |
in |
52069 | 376 |
(INFX (i, fixity_this), [Arg l, String " ", String s, Break, Arg r]) |
28060 | 377 |
end; |
378 |
||
52069 | 379 |
fun read_mixfix s = |
28060 | 380 |
let |
381 |
val sym_any = Scan.one Symbol.is_regular; |
|
52069 | 382 |
val parse = Scan.optional ($$ "!" >> K NOBR) BR -- Scan.repeat ( |
28060 | 383 |
($$ "(" -- $$ "_" -- $$ ")" >> K (Arg NOBR)) |
384 |
|| ($$ "_" >> K (Arg BR)) |
|
37881 | 385 |
|| ($$ "/" |-- Scan.repeat ($$ " ") >> (K Break)) |
28060 | 386 |
|| (Scan.repeat1 |
387 |
( $$ "'" |-- sym_any |
|
388 |
|| Scan.unless ($$ "_" || $$ "/" || $$ "(" |-- $$ "_" |-- $$ ")") |
|
37881 | 389 |
sym_any) >> (String o implode))); |
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|
390 |
fun err s (_, NONE) = (fn () => "malformed mixfix annotation: " ^ quote s) |
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|
391 |
| err _ (_, SOME msg) = msg; |
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|
392 |
in |
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|
393 |
case Scan.finite Symbol.stopper parse (Symbol.explode s) of |
52069 | 394 |
(fixity_mixfix, []) => fixity_mixfix |
395 |
| _ => Scan.!! (err s) Scan.fail () |
|
28060 | 396 |
end; |
397 |
||
52069 | 398 |
val parse_fixity = |
399 |
(@{keyword "infix"} >> K X) || (@{keyword "infixl"} >> K L) || (@{keyword "infixr"} >> K R) |
|
400 |
||
52099 | 401 |
fun parse_mixfix x = |
402 |
(Parse.string >> read_mixfix |
|
52069 | 403 |
|| parse_fixity -- Parse.nat -- Parse.string |
52099 | 404 |
>> (fn ((fixity, i), s) => read_infix (fixity, i) s)) x; |
28060 | 405 |
|
52069 | 406 |
fun syntax_of_mixfix of_plain of_printer prep_arg (BR, [String s]) = of_plain s |
407 |
| syntax_of_mixfix of_plain of_printer prep_arg (fixity, mfx) = |
|
408 |
of_printer (printer_of_mixfix prep_arg (fixity, mfx)); |
|
37881 | 409 |
|
52099 | 410 |
fun parse_tyco_syntax x = |
411 |
(parse_mixfix >> syntax_of_mixfix (fn s => (0, (K o K o K o str) s)) I I) x; |
|
52069 | 412 |
|
413 |
val parse_const_syntax = |
|
414 |
parse_mixfix >> syntax_of_mixfix plain_const_syntax simple_const_syntax fst; |
|
37881 | 415 |
|
28060 | 416 |
end; (*struct*) |