54 lines
1.4 KiB
OCaml
54 lines
1.4 KiB
OCaml
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(* Ranges and utilities on ranges. *)
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(* A range represents a segment of text in a given file; it has a
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* beginning and ending position specified in terms of line and column
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* numbers. A range is associated with tokens during lexing to allow
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* the compiler to give better error messages during lexing and
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* parsing.
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*)
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(* a position in the source file; line number and column *)
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type pos = int * int
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(* a range of positions in a particular file *)
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type t = string * pos * pos
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(* line of position *)
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val line_of_pos : pos -> int
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(* column of position *)
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val col_of_pos : pos -> int
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(* new position with given line and col *)
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val mk_pos : int -> int -> pos
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(* the filename a range is in *)
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val file_of_range : t -> string
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(* the beginning of the range *)
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val start_of_range : t -> pos
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(* the end of the range *)
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val end_of_range : t -> pos
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(* create a new range from the given filename and start, end positions *)
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val mk_range : string -> pos -> pos -> t
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(* merge two ranges together *)
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val merge_range : t -> t -> t
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(* pretty-print a range *)
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val string_of_range : t -> string
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(* print a range as an ocaml value *)
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val ml_string_of_range : t -> string
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(* use to tag generated AST nodes where range does not apply *)
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val norange : t
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val pos_of_lexpos : Lexing.position -> pos
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val mk_lex_range : Lexing.position -> Lexing.position -> t
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val lex_range : Lexing.lexbuf -> t
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