84 lines
3.0 KiB
OCaml
84 lines
3.0 KiB
OCaml
(***********************************************************************)
|
|
(* *)
|
|
(* Objective Caml *)
|
|
(* *)
|
|
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
|
|
(* *)
|
|
(* Copyright 1996 Institut National de Recherche en Informatique et *)
|
|
(* en Automatique. All rights reserved. This file is distributed *)
|
|
(* under the terms of the GNU Library General Public License. *)
|
|
(* *)
|
|
(***********************************************************************)
|
|
|
|
(* $Id$ *)
|
|
|
|
(** The run-time library for parsers generated by [ocamlyacc]. *)
|
|
|
|
(** [symbol_start] and {!Parsing.symbol_end} are to be called in the action part
|
|
of a grammar rule only. They return the position of the string that
|
|
matches the left-hand side of the rule: [symbol_start()] returns
|
|
the position of the first character; [symbol_end()] returns the
|
|
position of the last character, plus one. The first character
|
|
in a file is at position 0. *)
|
|
val symbol_start : unit -> int
|
|
|
|
(** See {!Parsing.symbol_start}. *)
|
|
val symbol_end : unit -> int
|
|
|
|
(** Same as {!Parsing.symbol_start} and {!Parsing.symbol_end}, but return the
|
|
position of the string matching the [n]th item on the
|
|
right-hand side of the rule, where [n] is the integer parameter
|
|
to [lhs_start] and [lhs_end]. [n] is 1 for the leftmost item. *)
|
|
val rhs_start: int -> int
|
|
|
|
(** See {!Parsing.rhs_start}. *)
|
|
val rhs_end: int -> int
|
|
|
|
(** Empty the parser stack. Call it just after a parsing function
|
|
has returned, to remove all pointers from the parser stack
|
|
to structures that were built by semantic actions during parsing.
|
|
This is optional, but lowers the memory requirements of the
|
|
programs. *)
|
|
val clear_parser : unit -> unit
|
|
|
|
(** Raised when a parser encounters a syntax error.
|
|
Can also be raised from the action part of a grammar rule,
|
|
to initiate error recovery. *)
|
|
exception Parse_error
|
|
|
|
|
|
(**/**)
|
|
|
|
(** {2 } *)
|
|
|
|
(** The following definitions are used by the generated parsers only.
|
|
They are not intended to be used by user programs. *)
|
|
|
|
type parser_env
|
|
|
|
type parse_tables =
|
|
{ actions : (parser_env -> Obj.t) array;
|
|
transl_const : int array;
|
|
transl_block : int array;
|
|
lhs : string;
|
|
len : string;
|
|
defred : string;
|
|
dgoto : string;
|
|
sindex : string;
|
|
rindex : string;
|
|
gindex : string;
|
|
tablesize : int;
|
|
table : string;
|
|
check : string;
|
|
error_function : string -> unit;
|
|
names_const : string;
|
|
names_block : string }
|
|
|
|
exception YYexit of Obj.t
|
|
|
|
val yyparse :
|
|
parse_tables -> int -> (Lexing.lexbuf -> 'a) -> Lexing.lexbuf -> 'b
|
|
val peek_val : parser_env -> int -> 'a
|
|
val is_current_lookahead : 'a -> bool
|
|
val parse_error : string -> unit
|