62 lines
1.9 KiB
OCaml
62 lines
1.9 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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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. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* raised when there are too many bindings (>= 254 memory cells) *)
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exception Memory_overflow
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(* Representation of automata *)
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type automata =
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Perform of int * tag_action list
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| Shift of automata_trans * (automata_move * memory_action list) array
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and automata_trans =
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No_remember
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| Remember of int * tag_action list
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and automata_move =
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Backtrack
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| Goto of int
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and memory_action =
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| Copy of int * int
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| Set of int
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and tag_action = SetTag of int * int | EraseTag of int
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type ident = string * Syntax.location
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(* Representation of entry points *)
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type tag_base = Start | End | Mem of int
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type tag_addr = Sum of (tag_base * int)
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type ident_info =
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| Ident_string of bool * tag_addr * tag_addr
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| Ident_char of bool * tag_addr
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type t_env = (ident * ident_info) list
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type ('args,'action) automata_entry =
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{ auto_name: string;
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auto_args: 'args ;
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auto_mem_size : int ;
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auto_initial_state: int * memory_action list ;
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auto_actions: (int * t_env * 'action) list }
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(* The entry point *)
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val make_dfa :
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('args, 'action) Syntax.entry list ->
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('args, 'action) automata_entry list * automata array
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