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