Frédéric Bour
2 years ago
commit
e956fce0c6
@ -0,0 +1,9 @@
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(executable
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(name menhir_stat)
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(modules menhir_stat)
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(libraries menhirLib menhirSdk))
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(executable
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(name ocamllexer)
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(modules ocamllexer)
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(libraries compilerlibs))
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@ -0,0 +1 @@
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(lang dune 2.8)
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@ -0,0 +1,127 @@
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module MenhirFolder(M: MenhirLib.IncrementalEngine.INCREMENTAL_ENGINE)(F : sig
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type 'a state
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type 'a frame
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val reduce : 'a state -> M.production -> pop:'a frame -> goto:'a M.env -> 'a frame * 'a state
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val shift : 'a state -> 'a M.env -> 'a frame * 'a state
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end): sig
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open F
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type 'a t
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val make : 'a M.checkpoint -> 'a frame -> 'a state -> 'a t
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val update : 'a t -> 'a M.checkpoint -> 'a t option
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val observe : 'a t -> 'a state
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end =
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struct
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open F
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type 'a t =
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| Normal of {
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state: 'a state;
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stack: ('a M.env * 'a frame) list }
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| Reduction of {
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state: 'a state;
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stack: ('a M.env * 'a frame) list;
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prod : M.production;
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}
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let make cp frame state =
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match cp with
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| M.InputNeeded env -> Normal { state; stack = [env, frame] }
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| _ -> invalid_arg
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"MenhirFolder: initial checkpoint should be in InputNeeded state"
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let rec pop_until stack env =
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match stack with
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| [] -> assert false
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| (env', f') :: _ when M.equal env env' -> f', stack
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| _ :: tl -> pop_until tl env
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let top_frame = function
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| (_, f) :: _ -> f
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| _ -> assert false
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let reduce_to state stack prod env =
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match M.pop env with
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| Some env' ->
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let frame, stack = pop_until stack env' in
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let frame', state' = reduce state prod ~pop:frame ~goto:env in
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state', (env, frame') :: stack
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| None -> assert false
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let get_stack t env =
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match t with
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| Normal { state; stack } -> state, stack
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| Reduction { state; stack; prod } -> reduce_to state stack prod env
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let update t = function
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| M.HandlingError _ | M.Rejected | M.Accepted _ -> None
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| M.InputNeeded env ->
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let state, stack = get_stack t env in
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Some (Normal {state; stack})
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| M.AboutToReduce (env, prod) ->
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let state, stack = get_stack t env in
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Some (Reduction {state; stack; prod})
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| M.Shifting (env, env', _) ->
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let state0, stack = get_stack t env in
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let frame', state = shift state0 env' in
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let stack = (env', frame') :: stack in
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Some (Normal {state; stack})
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let observe (Normal {state; _} | Reduction {state; _}) = state
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end
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type lr1_state = int
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type production = int
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type frame = {
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origin: lr1_state;
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reductions: int list;
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}
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type cell =
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| Shift of lr1_state
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| Reduce of production * cell
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module Recorder(M: MenhirLib.IncrementalEngine.INCREMENTAL_ENGINE) = struct
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module Tracker : sig
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type 'a state = {
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transitions: (cell * lr1_state, int ref) Hashtbl.t;
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cell: cell;
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}
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type 'a frame = cell
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val reduce : 'a state -> M.production -> pop:'a frame -> goto:'a M.env -> 'a frame * 'a state
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val shift : 'a state -> 'a M.env -> 'a frame * 'a state
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end = struct
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type 'a state = {
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transitions: (cell * lr1_state, int ref) Hashtbl.t;
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cell: cell;
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}
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type 'a frame = cell
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let incr transitions cell target =
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let key = (cell, target) in
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match Hashtbl.find transitions key with
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| r -> incr r
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| exception Not_found ->
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Hashtbl.add transitions key (ref 1)
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let incr_state state target =
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incr state.transitions state.cell target
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let shift state env =
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let target = M.current_state_number env in
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incr_state state target;
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let cell = Shift target in
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cell, {state with cell}
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let reduce state prod ~pop ~goto =
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let target = M.current_state_number goto in
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incr state.transitions pop target;
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let cell = Reduce (M.production_index prod, state.cell) in
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cell, {state with cell}
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end
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end
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@ -0,0 +1,818 @@
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(**************************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. *)
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(* *)
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(* All rights reserved. This file is distributed under the terms of *)
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(* the GNU Lesser General Public License version 2.1, with the *)
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(* special exception on linking described in the file LICENSE. *)
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(* *)
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(**************************************************************************)
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(* The lexer definition *)
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{
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open Lexing
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open Raw_parser
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type error =
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| Illegal_character of char
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| Illegal_escape of string * string option
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| Reserved_sequence of string * string option
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| Unterminated_comment of Location.t
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| Unterminated_string
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| Unterminated_string_in_comment of Location.t * Location.t
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| Keyword_as_label of string
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| Invalid_literal of string
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| Invalid_directive of string * string option
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;;
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exception Error of error * Location.t;;
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(* The table of keywords *)
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let keyword_table =
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let table = Hashtbl.create 101 in
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List.iter (fun (k, v) -> Hashtbl.add table k v) [
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"and", AND;
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"as", AS;
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"assert", ASSERT;
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"begin", BEGIN;
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"class", CLASS;
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"constraint", CONSTRAINT;
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"do", DO;
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"done", DONE;
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"downto", DOWNTO;
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"else", ELSE;
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"end", END;
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"exception", EXCEPTION;
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"external", EXTERNAL;
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"false", FALSE;
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"for", FOR;
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"fun", FUN;
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"function", FUNCTION;
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"functor", FUNCTOR;
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"if", IF;
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"in", IN;
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"include", INCLUDE;
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"inherit", INHERIT;
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"initializer", INITIALIZER;
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"lazy", LAZY;
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"let", LET;
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"match", MATCH;
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"method", METHOD;
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"module", MODULE;
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"mutable", MUTABLE;
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"new", NEW;
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"nonrec", NONREC;
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"object", OBJECT;
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"of", OF;
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"open", OPEN;
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"or", OR;
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(* "parser", PARSER; *)
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"private", PRIVATE;
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"rec", REC;
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"sig", SIG;
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"struct", STRUCT;
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"then", THEN;
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"to", TO;
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"true", TRUE;
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"try", TRY;
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"type", TYPE;
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"val", VAL;
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"virtual", VIRTUAL;
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"when", WHEN;
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"while", WHILE;
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"with", WITH;
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"lor", INFIXOP3("lor"); (* Should be INFIXOP2 *)
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"lxor", INFIXOP3("lxor"); (* Should be INFIXOP2 *)
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"mod", INFIXOP3("mod");
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"land", INFIXOP3("land");
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"lsl", INFIXOP4("lsl");
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"lsr", INFIXOP4("lsr");
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"asr", INFIXOP4("asr")
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];
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table
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(* To buffer string literals *)
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let string_buffer = Buffer.create 256
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let reset_string_buffer () = Buffer.reset string_buffer
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let get_stored_string () = Buffer.contents string_buffer
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let store_string_char c = Buffer.add_char string_buffer c
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let store_string_utf_8_uchar u = Buffer.add_utf_8_uchar string_buffer u
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let store_string s = Buffer.add_string string_buffer s
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let store_lexeme lexbuf = store_string (Lexing.lexeme lexbuf)
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(* To store the position of the beginning of a string and comment *)
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let string_start_loc = ref Location.none;;
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let comment_start_loc = ref [];;
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let in_comment () = !comment_start_loc <> [];;
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let is_in_string = ref false
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let in_string () = !is_in_string
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let print_warnings = ref true
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(* Escaped chars are interpreted in strings unless they are in comments. *)
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let store_escaped_char lexbuf c =
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if in_comment () then store_lexeme lexbuf else store_string_char c
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let store_escaped_uchar lexbuf u =
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if in_comment () then store_lexeme lexbuf else store_string_utf_8_uchar u
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let with_comment_buffer comment lexbuf =
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let start_loc = Location.curr lexbuf in
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comment_start_loc := [start_loc];
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reset_string_buffer ();
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let end_loc = comment lexbuf in
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let s = get_stored_string () in
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reset_string_buffer ();
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let loc = { start_loc with Location.loc_end = end_loc.Location.loc_end } in
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s, loc
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let error lexbuf e = raise (Error(e, Location.curr lexbuf))
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let error_loc loc e = raise (Error(e, loc))
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(* to translate escape sequences *)
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let digit_value c =
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match c with
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| 'a' .. 'f' -> 10 + Char.code c - Char.code 'a'
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| 'A' .. 'F' -> 10 + Char.code c - Char.code 'A'
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| '0' .. '9' -> Char.code c - Char.code '0'
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| _ -> assert false
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let num_value lexbuf ~base ~first ~last =
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let c = ref 0 in
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for i = first to last do
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let v = digit_value (Lexing.lexeme_char lexbuf i) in
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assert(v < base);
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c := (base * !c) + v
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done;
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!c
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let char_for_backslash = function
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| 'n' -> '\010'
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| 'r' -> '\013'
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| 'b' -> '\008'
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| 't' -> '\009'
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| c -> c
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let illegal_escape lexbuf reason =
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let error = Illegal_escape (Lexing.lexeme lexbuf, Some reason) in
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raise (Error (error, Location.curr lexbuf))
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let char_for_decimal_code lexbuf i =
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let c = num_value lexbuf ~base:10 ~first:i ~last:(i+2) in
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if (c < 0 || c > 255) then
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if in_comment ()
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then 'x'
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else
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illegal_escape lexbuf
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(Printf.sprintf
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"%d is outside the range of legal characters (0-255)." c)
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else Char.chr c
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let char_for_octal_code lexbuf i =
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let c = num_value lexbuf ~base:8 ~first:i ~last:(i+2) in
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if (c < 0 || c > 255) then
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if in_comment ()
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then 'x'
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else
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illegal_escape lexbuf
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(Printf.sprintf
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"o%o (=%d) is outside the range of legal characters (0-255)." c c)
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else Char.chr c
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let char_for_hexadecimal_code lexbuf i =
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Char.chr (num_value lexbuf ~base:16 ~first:i ~last:(i+1))
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let uchar_for_uchar_escape lexbuf =
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let len = Lexing.lexeme_end lexbuf - Lexing.lexeme_start lexbuf in
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let first = 3 (* skip opening \u{ *) in
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let last = len - 2 (* skip closing } *) in
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let digit_count = last - first + 1 in
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match digit_count > 6 with
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| true ->
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illegal_escape lexbuf
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"too many digits, expected 1 to 6 hexadecimal digits"
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| false ->
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let cp = num_value lexbuf ~base:16 ~first ~last in
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if Uchar.is_valid cp then Uchar.unsafe_of_int cp else
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illegal_escape lexbuf
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(Printf.sprintf "%X is not a Unicode scalar value" cp)
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let is_keyword name = Hashtbl.mem keyword_table name
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let check_label_name lexbuf name =
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if is_keyword name then error lexbuf (Keyword_as_label name)
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(* Update the current location with file name and line number. *)
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let update_loc lexbuf file line absolute chars =
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let pos = lexbuf.lex_curr_p in
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let new_file = match file with
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| None -> pos.pos_fname
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| Some s -> s
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in
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lexbuf.lex_curr_p <- { pos with
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pos_fname = new_file;
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pos_lnum = if absolute then line else pos.pos_lnum + line;
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pos_bol = pos.pos_cnum - chars;
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}
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;;
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let preprocessor = ref None
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let escaped_newlines = ref false
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(* Warn about Latin-1 characters used in idents *)
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let warn_latin1 lexbuf = ignore lexbuf
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(*Location.deprecated
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(Location.curr lexbuf)
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"ISO-Latin1 characters in identifiers"*)
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let handle_docstrings = ref true
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let comment_list = ref []
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let add_comment com =
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comment_list := com :: !comment_list
|
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let add_docstring_comment ds =
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let com =
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("*" ^ Docstrings.docstring_body ds, Docstrings.docstring_loc ds)
|
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in
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add_comment com
|
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let comments () = List.rev !comment_list
|
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|
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(* Error report *)
|
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|
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open Format
|
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|
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let prepare_error loc = function
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| Illegal_character c ->
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Location.errorf ~loc "Illegal character (%s)" (Char.escaped c)
|
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| Illegal_escape (s, explanation) ->
|
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Location.errorf ~loc
|
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"Illegal backslash escape in string or character (%s)%t" s
|
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(fun ppf -> match explanation with
|
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| None -> ()
|
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| Some expl -> fprintf ppf ": %s" expl)
|
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| Reserved_sequence (s, explanation) ->
|
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Location.errorf ~loc
|
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"Reserved character sequence: %s%t" s
|
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(fun ppf -> match explanation with
|
||||
| None -> ()
|
||||
| Some expl -> fprintf ppf " %s" expl)
|
||||
| Unterminated_comment _ ->
|
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Location.errorf ~loc "Comment not terminated"
|
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| Unterminated_string ->
|
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Location.errorf ~loc "String literal not terminated"
|
||||
| Unterminated_string_in_comment (_, literal_loc) ->
|
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Location.errorf ~loc
|
||||
"This comment contains an unterminated string literal"
|
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~sub:[Location.msg ~loc:literal_loc "String literal begins here"]
|
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| Keyword_as_label kwd ->
|
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Location.errorf ~loc
|
||||
"`%s' is a keyword, it cannot be used as label name" kwd
|
||||
| Invalid_literal s ->
|
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Location.errorf ~loc "Invalid literal %s" s
|
||||
| Invalid_directive (dir, explanation) ->
|
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Location.errorf ~loc "Invalid lexer directive %S%t" dir
|
||||
(fun ppf -> match explanation with
|
||||
| None -> ()
|
||||
| Some expl -> fprintf ppf ": %s" expl)
|
||||
|
||||
}
|
||||
|
||||
let newline = ('\013'* '\010')
|
||||
let blank = [' ' '\009' '\012']
|
||||
let lowercase = ['a'-'z' '_']
|
||||
let uppercase = ['A'-'Z']
|
||||
let identchar = ['A'-'Z' 'a'-'z' '_' '\'' '0'-'9']
|
||||
let lowercase_latin1 = ['a'-'z' '\223'-'\246' '\248'-'\255' '_']
|
||||
let uppercase_latin1 = ['A'-'Z' '\192'-'\214' '\216'-'\222']
|
||||
let identchar_latin1 =
|
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['A'-'Z' 'a'-'z' '_' '\192'-'\214' '\216'-'\246' '\248'-'\255' '\'' '0'-'9']
|
||||
let symbolchar =
|
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['!' '$' '%' '&' '*' '+' '-' '.' '/' ':' '<' '=' '>' '?' '@' '^' '|' '~']
|
||||
let dotsymbolchar =
|
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['!' '$' '%' '&' '*' '+' '-' '/' ':' '=' '>' '?' '@' '^' '|']
|
||||
let kwdopchar =
|
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['$' '&' '*' '+' '-' '/' '<' '=' '>' '@' '^' '|']
|
||||
|
||||
let decimal_literal =
|
||||
['0'-'9'] ['0'-'9' '_']*
|
||||
let hex_digit =
|
||||
['0'-'9' 'A'-'F' 'a'-'f']
|
||||
let hex_literal =
|
||||
'0' ['x' 'X'] ['0'-'9' 'A'-'F' 'a'-'f']['0'-'9' 'A'-'F' 'a'-'f' '_']*
|
||||
let oct_literal =
|
||||
'0' ['o' 'O'] ['0'-'7'] ['0'-'7' '_']*
|
||||
let bin_literal =
|
||||
'0' ['b' 'B'] ['0'-'1'] ['0'-'1' '_']*
|
||||
let int_literal =
|
||||
decimal_literal | hex_literal | oct_literal | bin_literal
|
||||
let float_literal =
|
||||
['0'-'9'] ['0'-'9' '_']*
|
||||
('.' ['0'-'9' '_']* )?
|
||||
(['e' 'E'] ['+' '-']? ['0'-'9'] ['0'-'9' '_']* )?
|
||||
let hex_float_literal =
|
||||
'0' ['x' 'X']
|
||||
['0'-'9' 'A'-'F' 'a'-'f'] ['0'-'9' 'A'-'F' 'a'-'f' '_']*
|
||||
('.' ['0'-'9' 'A'-'F' 'a'-'f' '_']* )?
|
||||
(['p' 'P'] ['+' '-']? ['0'-'9'] ['0'-'9' '_']* )?
|
||||
let literal_modifier = ['G'-'Z' 'g'-'z']
|
||||
|
||||
rule token = parse
|
||||
| ('\\' as bs) newline {
|
||||
if not !escaped_newlines then error lexbuf (Illegal_character bs);
|
||||
update_loc lexbuf None 1 false 0;
|
||||
token lexbuf }
|
||||
| newline
|
||||
{ update_loc lexbuf None 1 false 0;
|
||||
EOL }
|
||||
| blank +
|
||||
{ token lexbuf }
|
||||
| "_"
|
||||
{ UNDERSCORE }
|
||||
| "~"
|
||||
{ TILDE }
|
||||
| ".~"
|
||||
{ error lexbuf
|
||||
(Reserved_sequence (".~", Some "is reserved for use in MetaOCaml")) }
|
||||
| "~" (lowercase identchar * as name) ':'
|
||||
{ check_label_name lexbuf name;
|
||||
LABEL name }
|
||||
| "~" (lowercase_latin1 identchar_latin1 * as name) ':'
|
||||
{ warn_latin1 lexbuf;
|
||||
LABEL name }
|
||||
| "?"
|
||||
{ QUESTION }
|
||||
| "?" (lowercase identchar * as name) ':'
|
||||
{ check_label_name lexbuf name;
|
||||
OPTLABEL name }
|
||||
| "?" (lowercase_latin1 identchar_latin1 * as name) ':'
|
||||
{ warn_latin1 lexbuf;
|
||||
OPTLABEL name }
|
||||
| lowercase identchar * as name
|
||||
{ try Hashtbl.find keyword_table name
|
||||
with Not_found -> LIDENT name }
|
||||
| lowercase_latin1 identchar_latin1 * as name
|
||||
{ warn_latin1 lexbuf; LIDENT name }
|
||||
| uppercase identchar * as name
|
||||
{ UIDENT name } (* No capitalized keywords *)
|
||||
| uppercase_latin1 identchar_latin1 * as name
|
||||
{ warn_latin1 lexbuf; UIDENT name }
|
||||
| int_literal as lit { INT (lit, None) }
|
||||
| (int_literal as lit) (literal_modifier as modif)
|
||||
{ INT (lit, Some modif) }
|
||||
| float_literal | hex_float_literal as lit
|
||||
{ FLOAT (lit, None) }
|
||||
| (float_literal | hex_float_literal as lit) (literal_modifier as modif)
|
||||
{ FLOAT (lit, Some modif) }
|
||||
| (float_literal | hex_float_literal | int_literal) identchar+ as invalid
|
||||
{ error lexbuf (Invalid_literal invalid) }
|
||||
| "\""
|
||||
{ reset_string_buffer();
|
||||
is_in_string := true;
|
||||
let string_start = lexbuf.lex_start_p in
|
||||
string_start_loc := Location.curr lexbuf;
|
||||
string lexbuf;
|
||||
is_in_string := false;
|
||||
lexbuf.lex_start_p <- string_start;
|
||||
STRING (get_stored_string(), None) }
|
||||
| "{" (lowercase* as delim) "|"
|
||||
{ reset_string_buffer();
|
||||
is_in_string := true;
|
||||
let string_start = lexbuf.lex_start_p in
|
||||
string_start_loc := Location.curr lexbuf;
|
||||
quoted_string delim lexbuf;
|
||||
is_in_string := false;
|
||||
lexbuf.lex_start_p <- string_start;
|
||||
STRING (get_stored_string(), Some delim) }
|
||||
| "\'" newline "\'"
|
||||
{ update_loc lexbuf None 1 false 1;
|
||||
(* newline is ('\013'* '\010') *)
|
||||
CHAR '\n' }
|
||||
| "\'" ([^ '\\' '\'' '\010' '\013'] as c) "\'"
|
||||
{ CHAR c }
|
||||
| "\'\\" (['\\' '\'' '\"' 'n' 't' 'b' 'r' ' '] as c) "\'"
|
||||
{ CHAR (char_for_backslash c) }
|
||||
| "\'\\" ['0'-'9'] ['0'-'9'] ['0'-'9'] "\'"
|
||||
{ CHAR(char_for_decimal_code lexbuf 2) }
|
||||
| "\'\\" 'o' ['0'-'7'] ['0'-'7'] ['0'-'7'] "\'"
|
||||
{ CHAR(char_for_octal_code lexbuf 3) }
|
||||
| "\'\\" 'x' ['0'-'9' 'a'-'f' 'A'-'F'] ['0'-'9' 'a'-'f' 'A'-'F'] "\'"
|
||||
{ CHAR(char_for_hexadecimal_code lexbuf 3) }
|
||||
| "\'" ("\\" _ as esc)
|
||||
{ error lexbuf (Illegal_escape (esc, None)) }
|
||||
| "(*"
|
||||
{ let s, loc = with_comment_buffer comment lexbuf in
|
||||
COMMENT (s, loc) }
|
||||
| "(**"
|
||||
{ let s, loc = with_comment_buffer comment lexbuf in
|
||||
if !handle_docstrings then
|
||||
DOCSTRING (Docstrings.docstring s loc)
|
||||
else
|
||||
COMMENT ("*" ^ s, loc)
|
||||
}
|
||||
| "(**" (('*'+) as stars)
|
||||
{ let s, loc =
|
||||
with_comment_buffer
|
||||
(fun lexbuf ->
|
||||
store_string ("*" ^ stars);
|
||||
comment lexbuf)
|
||||
lexbuf
|
||||
in
|
||||
COMMENT (s, loc) }
|
||||
| "(*)"
|
||||
{ (*if !print_warnings then
|
||||
Location.prerr_warning (Location.curr lexbuf) Warnings.Comment_start;*)
|
||||
let s, loc = with_comment_buffer comment lexbuf in
|
||||
COMMENT (s, loc) }
|
||||
| "(*" (('*'*) as stars) "*)"
|
||||
{ if !handle_docstrings && stars="" then
|
||||
(* (**) is an empty docstring *)
|
||||
DOCSTRING(Docstrings.docstring "" (Location.curr lexbuf))
|
||||
else
|
||||
COMMENT (stars, Location.curr lexbuf) }
|
||||
| "*)"
|
||||
{ (*let loc = Location.curr lexbuf in
|
||||
Location.prerr_warning loc Warnings.Comment_not_end;*)
|
||||
lexbuf.Lexing.lex_curr_pos <- lexbuf.Lexing.lex_curr_pos - 1;
|
||||
let curpos = lexbuf.lex_curr_p in
|
||||
lexbuf.lex_curr_p <- { curpos with pos_cnum = curpos.pos_cnum - 1 };
|
||||
STAR
|
||||
}
|
||||
| "#"
|
||||
{ let at_beginning_of_line pos = (pos.pos_cnum = pos.pos_bol) in
|
||||
if not (at_beginning_of_line lexbuf.lex_start_p)
|
||||
then HASH
|
||||
else try directive lexbuf with Failure _ -> HASH
|
||||
}
|
||||
| "&" { AMPERSAND }
|
||||
| "&&" { AMPERAMPER }
|
||||
| "`" { BACKQUOTE }
|
||||
| "\'" { QUOTE }
|
||||
| "(" { LPAREN }
|
||||
| ")" { RPAREN }
|
||||
| "*" { STAR }
|
||||
| "," { COMMA }
|
||||
| "->" { MINUSGREATER }
|
||||
| "." { DOT }
|
||||
| ".." { DOTDOT }
|
||||
| "." (dotsymbolchar symbolchar* as op) { DOTOP op }
|
||||
| ":" { COLON }
|
||||
| "::" { COLONCOLON }
|
||||
| ":=" { COLONEQUAL }
|
||||
| ":>" { COLONGREATER }
|
||||
| ";" { SEMI }
|
||||
| ";;" { SEMISEMI }
|
||||
| "<" { LESS }
|
||||
| "<-" { LESSMINUS }
|
||||
| "=" { EQUAL }
|
||||
| "[" { LBRACKET }
|
||||
| "[|" { LBRACKETBAR }
|
||||
| "[<" { LBRACKETLESS }
|
||||
| "[>" { LBRACKETGREATER }
|
||||
| "]" { RBRACKET }
|
||||
| "{" { LBRACE }
|
||||
| "{<" { LBRACELESS }
|
||||
| "|" { BAR }
|
||||
| "||" { BARBAR }
|
||||
| "|]" { BARRBRACKET }
|
||||
| ">" { GREATER }
|
||||
| ">]" { GREATERRBRACKET }
|
||||
| "}" { RBRACE }
|
||||
| ">}" { GREATERRBRACE }
|
||||
| "[@" { LBRACKETAT }
|
||||
| "[@@" { LBRACKETATAT }
|
||||
| "[@@@" { LBRACKETATATAT }
|
||||
| "[%" { LBRACKETPERCENT }
|
||||
| "[%%" { LBRACKETPERCENTPERCENT }
|
||||
| "!" { BANG }
|
||||
| "!=" { INFIXOP0 "!=" }
|
||||
| "+" { PLUS }
|
||||
| "+." { PLUSDOT }
|
||||
| "+=" { PLUSEQ }
|
||||
| "-" { MINUS }
|
||||
| "-." { MINUSDOT }
|
||||
|
||||
| "!" symbolchar + as op
|
||||
{ PREFIXOP op }
|
||||
| ['~' '?'] symbolchar + as op
|
||||
{ PREFIXOP op }
|
||||
| ['=' '<' '>' '|' '&' '$'] symbolchar * as op
|
||||
{ INFIXOP0 op }
|
||||
| ['@' '^'] symbolchar * as op
|
||||
{ INFIXOP1 op }
|
||||
| ['+' '-'] symbolchar * as op
|
||||
{ INFIXOP2 op }
|
||||
| "**" symbolchar * as op
|
||||
{ INFIXOP4 op }
|
||||
| '%' { PERCENT }
|
||||
| ['*' '/' '%'] symbolchar * as op
|
||||
{ INFIXOP3 op }
|
||||
| '#' (symbolchar | '#') + as op
|
||||
{ HASHOP op }
|
||||
| "let" kwdopchar dotsymbolchar * as op
|
||||
{ LETOP op }
|
||||
| "and" kwdopchar dotsymbolchar * as op
|
||||
{ ANDOP op }
|
||||
| eof { EOF }
|
||||
| (_ as illegal_char)
|
||||
{ error lexbuf (Illegal_character illegal_char) }
|
||||
|
||||
and directive = parse
|
||||
| ([' ' '\t']* (['0'-'9']+ as num) [' ' '\t']*
|
||||
("\"" ([^ '\010' '\013' '\"' ] * as name) "\"") as directive)
|
||||
[^ '\010' '\013'] *
|
||||
{
|
||||
match int_of_string num with
|
||||
| exception _ ->
|
||||
(* PR#7165 *)
|
||||
let explanation = "line number out of range" in
|
||||
error lexbuf (Invalid_directive ("#" ^ directive, Some explanation))
|
||||
| line_num ->
|
||||
(* Documentation says that the line number should be
|
||||
positive, but we have never guarded against this and it
|
||||
might have useful hackish uses. *)
|
||||
update_loc lexbuf (Some name) (line_num - 1) true 0;
|
||||
token lexbuf
|
||||
}
|
||||
and comment = parse
|
||||
"(*"
|
||||
{ comment_start_loc := (Location.curr lexbuf) :: !comment_start_loc;
|
||||
store_lexeme lexbuf;
|
||||
comment lexbuf
|
||||
}
|
||||
| "*)"
|
||||
{ match !comment_start_loc with
|
||||
| [] -> assert false
|
||||
| [_] -> comment_start_loc := []; Location.curr lexbuf
|
||||
| _ :: l -> comment_start_loc := l;
|
||||
store_lexeme lexbuf;
|
||||
comment lexbuf
|
||||
}
|
||||
| "\""
|
||||
{
|
||||
string_start_loc := Location.curr lexbuf;
|
||||
store_string_char '\"';
|
||||
is_in_string := true;
|
||||
begin try string lexbuf
|
||||
with Error (Unterminated_string, str_start) ->
|
||||
match !comment_start_loc with
|
||||
| [] -> assert false
|
||||
| loc :: _ ->
|
||||
let start = List.hd (List.rev !comment_start_loc) in
|
||||
comment_start_loc := [];
|
||||
error_loc loc (Unterminated_string_in_comment (start, str_start))
|
||||
end;
|
||||
is_in_string := false;
|
||||
store_string_char '\"';
|
||||
comment lexbuf }
|
||||
| "{" (lowercase* as delim) "|"
|
||||
{
|
||||
string_start_loc := Location.curr lexbuf;
|
||||
store_lexeme lexbuf;
|
||||
is_in_string := true;
|
||||
begin try quoted_string delim lexbuf
|
||||
with Error (Unterminated_string, str_start) ->
|
||||
match !comment_start_loc with
|
||||
| [] -> assert false
|
||||
| loc :: _ ->
|
||||
let start = List.hd (List.rev !comment_start_loc) in
|
||||
comment_start_loc := [];
|
||||
error_loc loc (Unterminated_string_in_comment (start, str_start))
|
||||
end;
|
||||
is_in_string := false;
|
||||
store_string_char '|';
|
||||
store_string delim;
|
||||
store_string_char '}';
|
||||
comment lexbuf }
|
||||
|
||||
| "\'\'"
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| "\'" newline "\'"
|
||||
{ update_loc lexbuf None 1 false 1;
|
||||
store_lexeme lexbuf;
|
||||
comment lexbuf
|
||||
}
|
||||
| "\'" [^ '\\' '\'' '\010' '\013' ] "\'"
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| "\'\\" ['\\' '\"' '\'' 'n' 't' 'b' 'r' ' '] "\'"
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| "\'\\" ['0'-'9'] ['0'-'9'] ['0'-'9'] "\'"
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| "\'\\" 'o' ['0'-'3'] ['0'-'7'] ['0'-'7'] "\'"
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| "\'\\" 'x' ['0'-'9' 'a'-'f' 'A'-'F'] ['0'-'9' 'a'-'f' 'A'-'F'] "\'"
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| eof
|
||||
{ match !comment_start_loc with
|
||||
| [] -> assert false
|
||||
| loc :: _ ->
|
||||
let start = List.hd (List.rev !comment_start_loc) in
|
||||
comment_start_loc := [];
|
||||
error_loc loc (Unterminated_comment start)
|
||||
}
|
||||
| newline
|
||||
{ update_loc lexbuf None 1 false 0;
|
||||
store_lexeme lexbuf;
|
||||
comment lexbuf
|
||||
}
|
||||
| (lowercase | uppercase) identchar *
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
| _
|
||||
{ store_lexeme lexbuf; comment lexbuf }
|
||||
|
||||
and string = parse
|
||||
'\"'
|
||||
{ () }
|
||||
| '\\' newline ([' ' '\t'] * as space)
|
||||
{ update_loc lexbuf None 1 false (String.length space);
|
||||
if in_comment () then store_lexeme lexbuf;
|
||||
string lexbuf
|
||||
}
|
||||
| '\\' (['\\' '\'' '\"' 'n' 't' 'b' 'r' ' '] as c)
|
||||
{ store_escaped_char lexbuf (char_for_backslash c);
|
||||
string lexbuf }
|
||||
| '\\' ['0'-'9'] ['0'-'9'] ['0'-'9']
|
||||
{ store_escaped_char lexbuf (char_for_decimal_code lexbuf 1);
|
||||
string lexbuf }
|
||||
| '\\' 'o' ['0'-'7'] ['0'-'7'] ['0'-'7']
|
||||
{ store_escaped_char lexbuf (char_for_octal_code lexbuf 2);
|
||||
string lexbuf }
|
||||
| '\\' 'x' ['0'-'9' 'a'-'f' 'A'-'F'] ['0'-'9' 'a'-'f' 'A'-'F']
|
||||
{ store_escaped_char lexbuf (char_for_hexadecimal_code lexbuf 2);
|
||||
string lexbuf }
|
||||
| '\\' 'u' '{' hex_digit+ '}'
|
||||
{ store_escaped_uchar lexbuf (uchar_for_uchar_escape lexbuf);
|
||||
string lexbuf }
|
||||
| '\\' _
|
||||
{ if not (in_comment ()) then begin
|
||||
(* Should be an error, but we are very lax.
|
||||
error lexbuf (Illegal_escape (Lexing.lexeme lexbuf, None))
|
||||
*)
|
||||
(*let loc = Location.curr lexbuf in
|
||||
Location.prerr_warning loc Warnings.Illegal_backslash;*)
|
||||
end;
|
||||
store_lexeme lexbuf;
|
||||
string lexbuf
|
||||
}
|
||||
| newline
|
||||
{ (*if not (in_comment ()) then
|
||||
Location.prerr_warning (Location.curr lexbuf) Warnings.Eol_in_string;*)
|
||||
update_loc lexbuf None 1 false 0;
|
||||
store_lexeme lexbuf;
|
||||
string lexbuf
|
||||
}
|
||||
| eof
|
||||
{ is_in_string := false;
|
||||
error_loc !string_start_loc Unterminated_string }
|
||||
| (_ as c)
|
||||
{ store_string_char c;
|
||||
string lexbuf }
|
||||
|
||||
and quoted_string delim = parse
|
||||
| newline
|
||||
{ update_loc lexbuf None 1 false 0;
|
||||
store_lexeme lexbuf;
|
||||
quoted_string delim lexbuf
|
||||
}
|
||||
| eof
|
||||
{ is_in_string := false;
|
||||
error_loc !string_start_loc Unterminated_string }
|
||||
| "|" (lowercase* as edelim) "}"
|
||||
{
|
||||
if delim = edelim then ()
|
||||
else (store_lexeme lexbuf; quoted_string delim lexbuf)
|
||||
}
|
||||
| (_ as c)
|
||||
{ store_string_char c;
|
||||
quoted_string delim lexbuf }
|
||||
|
||||
and skip_hash_bang = parse
|
||||
| "#!" [^ '\n']* '\n' [^ '\n']* "\n!#\n"
|
||||
{ update_loc lexbuf None 3 false 0 }
|
||||
| "#!" [^ '\n']* '\n'
|
||||
{ update_loc lexbuf None 1 false 0 }
|
||||
| "" { () }
|
||||
|
||||
{
|
||||
|
||||
let token_with_comments lexbuf =
|
||||
match !preprocessor with
|
||||
| None -> token lexbuf
|
||||
| Some (_init, preprocess) -> preprocess token lexbuf
|
||||
|
||||
type newline_state =
|
||||
| NoLine (* There have been no blank lines yet. *)
|
||||
| NewLine
|
||||
(* There have been no blank lines, and the previous
|
||||
token was a newline. *)
|
||||
| BlankLine (* There have been blank lines. *)
|
||||
|
||||
type doc_state =
|
||||
| Initial (* There have been no docstrings yet *)
|
||||
| After of docstring list
|
||||
(* There have been docstrings, none of which were
|
||||
preceded by a blank line *)
|
||||
| Before of docstring list * docstring list * docstring list
|
||||
(* There have been docstrings, some of which were
|
||||
preceded by a blank line *)
|
||||
|
||||
and docstring = Docstrings.docstring
|
||||
|
||||
let token lexbuf =
|
||||
let post_pos = lexeme_end_p lexbuf in
|
||||
let attach lines docs pre_pos =
|
||||
let open Docstrings in
|
||||
match docs, lines with
|
||||
| Initial, _ -> ()
|
||||
| After a, (NoLine | NewLine) ->
|
||||
set_post_docstrings post_pos (List.rev a);
|
||||
set_pre_docstrings pre_pos a;
|
||||
| After a, BlankLine ->
|
||||
set_post_docstrings post_pos (List.rev a);
|
||||
set_pre_extra_docstrings pre_pos (List.rev a)
|
||||
| Before(a, f, b), (NoLine | NewLine) ->
|
||||
set_post_docstrings post_pos (List.rev a);
|
||||
set_post_extra_docstrings post_pos
|
||||
(List.rev_append f (List.rev b));
|
||||
set_floating_docstrings pre_pos (List.rev f);
|
||||
set_pre_extra_docstrings pre_pos (List.rev a);
|
||||
set_pre_docstrings pre_pos b
|
||||
| Before(a, f, b), BlankLine ->
|
||||
set_post_docstrings post_pos (List.rev a);
|
||||
set_post_extra_docstrings post_pos
|
||||
(List.rev_append f (List.rev b));
|
||||
set_floating_docstrings pre_pos
|
||||
(List.rev_append f (List.rev b));
|
||||
set_pre_extra_docstrings pre_pos (List.rev a)
|
||||
in
|
||||
let rec loop lines docs lexbuf =
|
||||
match token_with_comments lexbuf with
|
||||
| COMMENT (s, loc) ->
|
||||
add_comment (s, loc);
|
||||
let lines' =
|
||||
match lines with
|
||||
| NoLine -> NoLine
|
||||
| NewLine -> NoLine
|
||||
| BlankLine -> BlankLine
|
||||
in
|
||||
loop lines' docs lexbuf
|
||||
| EOL ->
|
||||
let lines' =
|
||||
match lines with
|
||||
| NoLine -> NewLine
|
||||
| NewLine -> BlankLine
|
||||
| BlankLine -> BlankLine
|
||||
in
|
||||
loop lines' docs lexbuf
|
||||
| DOCSTRING doc ->
|
||||
Docstrings.register doc;
|
||||
add_docstring_comment doc;
|
||||
let docs' =
|
||||
if Docstrings.docstring_body doc = "/*" then
|
||||
match docs with
|
||||
| Initial -> Before([], [doc], [])
|
||||
| After a -> Before (a, [doc], [])
|
||||
| Before(a, f, b) -> Before(a, doc :: b @ f, [])
|
||||
else
|
||||
match docs, lines with
|
||||
| Initial, (NoLine | NewLine) -> After [doc]
|
||||
| Initial, BlankLine -> Before([], [], [doc])
|
||||
| After a, (NoLine | NewLine) -> After (doc :: a)
|
||||
| After a, BlankLine -> Before (a, [], [doc])
|
||||
| Before(a, f, b), (NoLine | NewLine) -> Before(a, f, doc :: b)
|
||||
| Before(a, f, b), BlankLine -> Before(a, b @ f, [doc])
|
||||
in
|
||||
loop NoLine docs' lexbuf
|
||||
| tok ->
|
||||
attach lines docs (lexeme_start_p lexbuf);
|
||||
tok
|
||||
in
|
||||
loop NoLine Initial lexbuf
|
||||
|
||||
let init () =
|
||||
is_in_string := false;
|
||||
comment_start_loc := [];
|
||||
comment_list := [];
|
||||
match !preprocessor with
|
||||
| None -> ()
|
||||
| Some (init, _preprocess) -> init ()
|
||||
|
||||
let set_preprocessor init preprocess =
|
||||
escaped_newlines := true;
|
||||
preprocessor := Some (init, preprocess)
|
||||
|
||||
}
|
||||
File diff suppressed because it is too large
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Reference in new issue