From 7eba2dfda86238cb0941edfd7aafb09f566c36d8 Mon Sep 17 00:00:00 2001
From: Enrico Tassi
Date: Mon, 25 Mar 2019 17:31:55 +0100
Subject: [parser] initialization based on Loc.t rather than Loc.source

In this way one can also set the current offsets in a file,
useful if you are parsing a Coq fragment within a file instead
of a full file starting from the first line.
---
 lib/loc.ml  | 2 ++
 lib/loc.mli | 3 +++
 2 files changed, 5 insertions(+)

(limited to 'lib')

diff --git a/lib/loc.ml b/lib/loc.ml
index 66b7a7da70..6bcdcc0341 100644
--- a/lib/loc.ml
+++ b/lib/loc.ml
@@ -29,6 +29,8 @@ let create fname line_nb bol_pos bp ep = {
   line_nb_last = line_nb; bol_pos_last = bol_pos; bp = bp; ep = ep;
 }
 
+let initial source = create source 1 0 0 0
+
 let make_loc (bp, ep) = {
   fname = ToplevelInput; line_nb = -1; bol_pos = 0; line_nb_last = -1; bol_pos_last = 0;
   bp = bp; ep = ep;
diff --git a/lib/loc.mli b/lib/loc.mli
index 23df1ebd9a..1eb3cc49e8 100644
--- a/lib/loc.mli
+++ b/lib/loc.mli
@@ -32,6 +32,9 @@ val create : source -> int -> int -> int -> int -> t
 (** Create a location from a filename, a line number, a position of the
     beginning of the line, a start and end position *)
 
+val initial : source -> t
+(** Create a location corresponding to the beginning of the given source *)
+
 val unloc : t -> int * int
 (** Return the start and end position of a location *)
 
-- 
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