author | haftmann |
Fri, 15 Feb 2013 08:31:31 +0100 | |
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parent 50628 | 1087c7f1d906 |
child 52068 | 1abaea5d5a22 |
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: 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: string -> Pretty.T -> Pretty.T |
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val format: string 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 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 tyco_syntax |
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type simple_const_syntax |
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type complex_const_syntax |
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type const_syntax |
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type activated_complex_const_syntax |
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datatype activated_const_syntax = Plain_const_syntax of int * string |
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| Complex_const_syntax of activated_complex_const_syntax |
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val requires_args: const_syntax -> int |
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val parse_const_syntax: Token.T list -> const_syntax option * Token.T list |
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val parse_tyco_syntax: Token.T list -> tyco_syntax option * Token.T list |
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val plain_const_syntax: string -> const_syntax |
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val simple_const_syntax: simple_const_syntax -> const_syntax |
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val complex_const_syntax: complex_const_syntax -> const_syntax |
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val activate_const_syntax: theory -> literals |
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-> string -> const_syntax -> Code_Thingol.naming -> activated_const_syntax * Code_Thingol.naming |
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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 -> activated_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 Code_Thingol; |
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(** generic nonsense *) |
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fun eqn_error (SOME thm) s = |
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error (s ^ ",\nin equation " ^ Display.string_of_thm_without_context 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 name = Print_Mode.setmp [code_presentationN] |
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(Pretty.mark (code_presentationN, [(stmt_nameN, name)])); |
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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_names tree = |
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let |
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fun is_selected (name, attrs) = |
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name = code_presentationN |
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andalso member (op =) presentation_names (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 names = names |
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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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(** pretty literals **) |
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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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}; |
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fun dest_Literals (Literals lits) = lits; |
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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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215 |
|
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216 |
|
28060 | 217 |
(** syntax printer **) |
218 |
||
219 |
(* binding priorities *) |
|
220 |
||
221 |
datatype lrx = L | R | X; |
|
222 |
||
223 |
datatype fixity = |
|
224 |
BR |
|
225 |
| NOBR |
|
226 |
| INFX of (int * lrx); |
|
227 |
||
228 |
val APP = INFX (~1, L); |
|
229 |
||
230 |
fun fixity_lrx L L = false |
|
231 |
| fixity_lrx R R = false |
|
232 |
| fixity_lrx _ _ = true; |
|
233 |
||
234 |
fun fixity NOBR _ = false |
|
235 |
| fixity _ NOBR = false |
|
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| fixity (INFX (pr, lr)) (INFX (print_ctxt, lr_ctxt)) = |
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pr < print_ctxt |
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orelse pr = print_ctxt |
28060 | 239 |
andalso fixity_lrx lr lr_ctxt |
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orelse print_ctxt = ~1 |
28060 | 241 |
| fixity BR (INFX _) = false |
242 |
| fixity _ _ = true; |
|
243 |
||
244 |
fun gen_brackify _ [p] = p |
|
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| gen_brackify true (ps as _::_) = enclose "(" ")" ps |
28060 | 246 |
| gen_brackify false (ps as _::_) = Pretty.block ps; |
247 |
||
248 |
fun brackify fxy_ctxt = |
|
249 |
gen_brackify (fixity BR fxy_ctxt) o Pretty.breaks; |
|
250 |
||
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fun brackify_infix infx fxy_ctxt (l, m, r) = |
50627 | 252 |
gen_brackify (fixity (INFX infx) fxy_ctxt) [l, str " ", m, Pretty.brk 1, r]; |
28060 | 253 |
|
31665 | 254 |
fun brackify_block fxy_ctxt p1 ps p2 = |
255 |
let val p = Pretty.block_enclose (p1, p2) ps |
|
256 |
in if fixity BR fxy_ctxt |
|
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then enclose "(" ")" [p] |
31665 | 258 |
else p |
259 |
end; |
|
260 |
||
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fun gen_applify strict opn cls f fxy_ctxt p [] = |
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if strict |
50628 | 263 |
then gen_brackify (fixity BR fxy_ctxt) [p, str (opn ^ cls)] |
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264 |
else p |
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265 |
| gen_applify strict opn cls f fxy_ctxt p ps = |
50627 | 266 |
gen_brackify (fixity BR fxy_ctxt) (p @@ enum "," opn cls (map f ps)); |
34247 | 267 |
|
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fun applify opn = gen_applify false opn; |
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269 |
|
38922 | 270 |
fun tuplify _ _ [] = NONE |
271 |
| tuplify print fxy [x] = SOME (print fxy x) |
|
272 |
| tuplify print _ xs = SOME (enum "," "(" ")" (map (print NOBR) xs)); |
|
273 |
||
28060 | 274 |
|
275 |
(* generic syntax *) |
|
276 |
||
277 |
type tyco_syntax = int * ((fixity -> itype -> Pretty.T) |
|
278 |
-> fixity -> itype list -> Pretty.T); |
|
34152 | 279 |
|
280 |
type simple_const_syntax = int * ((fixity -> iterm -> Pretty.T) |
|
281 |
-> fixity -> (iterm * itype) list -> Pretty.T); |
|
37881 | 282 |
|
283 |
type complex_const_syntax = int * (string list * (literals -> string list |
|
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-> (var_ctxt -> fixity -> iterm -> Pretty.T) |
35228 | 285 |
-> thm option -> var_ctxt -> fixity -> (iterm * itype) list -> Pretty.T)); |
37881 | 286 |
|
287 |
datatype const_syntax = plain_const_syntax of string |
|
288 |
| complex_const_syntax of complex_const_syntax; |
|
289 |
||
290 |
fun requires_args (plain_const_syntax _) = 0 |
|
291 |
| requires_args (complex_const_syntax (k, _)) = k; |
|
28060 | 292 |
|
34176 | 293 |
fun simple_const_syntax syn = |
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294 |
complex_const_syntax |
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295 |
(apsnd (fn f => ([], (fn _ => fn _ => fn print => fn _ => fn vars => f (print vars)))) syn); |
28060 | 296 |
|
37881 | 297 |
type activated_complex_const_syntax = int * ((var_ctxt -> fixity -> iterm -> Pretty.T) |
298 |
-> thm option -> var_ctxt -> fixity -> (iterm * itype) list -> Pretty.T) |
|
299 |
||
300 |
datatype activated_const_syntax = Plain_const_syntax of int * string |
|
301 |
| Complex_const_syntax of activated_complex_const_syntax; |
|
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302 |
|
37881 | 303 |
fun activate_const_syntax thy literals c (plain_const_syntax s) naming = |
304 |
(Plain_const_syntax (Code.args_number thy c, s), naming) |
|
305 |
| activate_const_syntax thy literals c (complex_const_syntax (n, (cs, f))) naming = |
|
306 |
fold_map (Code_Thingol.ensure_declared_const thy) cs naming |
|
307 |
|-> (fn cs' => pair (Complex_const_syntax (n, f literals cs'))); |
|
308 |
||
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309 |
fun gen_print_app print_app_expr print_term const_syntax some_thm vars fxy |
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310 |
(app as ({ name = c, dom, ... }, ts)) = |
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311 |
case const_syntax c of |
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312 |
NONE => brackify fxy (print_app_expr some_thm vars app) |
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313 |
| SOME (Plain_const_syntax (_, s)) => |
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314 |
brackify fxy (str s :: map (print_term some_thm vars BR) ts) |
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|
315 |
| SOME (Complex_const_syntax (k, print)) => |
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316 |
let |
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317 |
fun print' fxy ts = |
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318 |
print (print_term some_thm) some_thm vars fxy (ts ~~ take k dom); |
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|
319 |
in |
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320 |
if k = length ts |
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|
321 |
then print' fxy ts |
28060 | 322 |
else if k < length ts |
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|
323 |
then case chop k ts of (ts1, ts2) => |
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|
324 |
brackify fxy (print' APP ts1 :: map (print_term some_thm vars BR) ts2) |
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|
325 |
else print_term some_thm vars fxy (Code_Thingol.eta_expand k app) |
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|
326 |
end; |
28060 | 327 |
|
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328 |
fun gen_print_bind print_term thm (fxy : fixity) pat vars = |
28060 | 329 |
let |
31889 | 330 |
val vs = Code_Thingol.fold_varnames (insert (op =)) pat []; |
31874 | 331 |
val vars' = intro_vars vs vars; |
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|
332 |
in (print_term thm vars' fxy pat, vars') end; |
28060 | 333 |
|
334 |
||
335 |
(* mixfix syntax *) |
|
336 |
||
337 |
datatype 'a mixfix = |
|
338 |
Arg of fixity |
|
37881 | 339 |
| String of string |
340 |
| Break; |
|
28060 | 341 |
|
342 |
fun mk_mixfix prep_arg (fixity_this, mfx) = |
|
343 |
let |
|
344 |
fun is_arg (Arg _) = true |
|
345 |
| is_arg _ = false; |
|
346 |
val i = (length o filter is_arg) mfx; |
|
347 |
fun fillin _ [] [] = |
|
348 |
[] |
|
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349 |
| fillin print (Arg fxy :: mfx) (a :: args) = |
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350 |
(print fxy o prep_arg) a :: fillin print mfx args |
37881 | 351 |
| fillin print (String s :: mfx) args = |
352 |
str s :: fillin print mfx args |
|
353 |
| fillin print (Break :: mfx) args = |
|
354 |
Pretty.brk 1 :: fillin print mfx args; |
|
28060 | 355 |
in |
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|
356 |
(i, fn print => fn fixity_ctxt => fn args => |
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|
357 |
gen_brackify (fixity fixity_this fixity_ctxt) (fillin print mfx args)) |
28060 | 358 |
end; |
359 |
||
360 |
fun parse_infix prep_arg (x, i) s = |
|
361 |
let |
|
362 |
val l = case x of L => INFX (i, L) | _ => INFX (i, X); |
|
363 |
val r = case x of R => INFX (i, R) | _ => INFX (i, X); |
|
364 |
in |
|
37881 | 365 |
mk_mixfix prep_arg (INFX (i, x), [Arg l, String " ", String s, Break, Arg r]) |
28060 | 366 |
end; |
367 |
||
37881 | 368 |
fun parse_mixfix mk_plain mk_complex prep_arg s = |
28060 | 369 |
let |
370 |
val sym_any = Scan.one Symbol.is_regular; |
|
371 |
val parse = Scan.optional ($$ "!" >> K true) false -- Scan.repeat ( |
|
372 |
($$ "(" -- $$ "_" -- $$ ")" >> K (Arg NOBR)) |
|
373 |
|| ($$ "_" >> K (Arg BR)) |
|
37881 | 374 |
|| ($$ "/" |-- Scan.repeat ($$ " ") >> (K Break)) |
28060 | 375 |
|| (Scan.repeat1 |
376 |
( $$ "'" |-- sym_any |
|
377 |
|| Scan.unless ($$ "_" || $$ "/" || $$ "(" |-- $$ "_" |-- $$ ")") |
|
37881 | 378 |
sym_any) >> (String o implode))); |
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|
379 |
fun err s (_, NONE) = (fn () => "malformed mixfix annotation: " ^ quote s) |
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|
380 |
| err _ (_, SOME msg) = msg; |
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|
381 |
in |
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|
382 |
case Scan.finite Symbol.stopper parse (Symbol.explode s) of |
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|
383 |
((false, [String s]), []) => mk_plain s |
37881 | 384 |
| ((_, p as [_]), []) => mk_complex (mk_mixfix prep_arg (NOBR, p)) |
385 |
| ((b, p as _ :: _ :: _), []) => mk_complex (mk_mixfix prep_arg (if b then NOBR else BR, p)) |
|
43947
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|
386 |
| _ => Scan.!! (err s) Scan.fail () |
28060 | 387 |
end; |
388 |
||
37881 | 389 |
fun parse_syntax mk_plain mk_complex prep_arg = |
390 |
Scan.option ( |
|
46949 | 391 |
((@{keyword "infix"} >> K X) |
392 |
|| (@{keyword "infixl"} >> K L) |
|
393 |
|| (@{keyword "infixr"} >> K R)) |
|
37881 | 394 |
-- Parse.nat -- Parse.string |
395 |
>> (fn ((x, i), s) => mk_complex (parse_infix prep_arg (x, i) s)) |
|
396 |
|| Parse.string >> (fn s => (parse_mixfix mk_plain mk_complex prep_arg s))); |
|
28060 | 397 |
|
37899 | 398 |
fun parse_tyco_syntax x = parse_syntax (fn s => (0, (K o K o K o str) s)) I I x; |
37881 | 399 |
|
400 |
val parse_const_syntax = parse_syntax plain_const_syntax simple_const_syntax fst; |
|
401 |
||
28060 | 402 |
end; (*struct*) |