From: Alexis Laferrière <alexis.laf@xymus.net>
Date: Mon, 11 Jan 2016 19:49:11 +0000 (-0500)
Subject: lib/parser_base: intro `StringProcessor::eof` and fix index error
X-Git-Tag: v0.8~15^2~3
X-Git-Url: http://nitlanguage.org

lib/parser_base: intro `StringProcessor::eof` and fix index error

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
---

diff --git a/lib/parser_base.nit b/lib/parser_base.nit
index 234b733..f97fbf0 100644
--- a/lib/parser_base.nit
+++ b/lib/parser_base.nit
@@ -101,12 +101,15 @@ class StringProcessor
 
 	# Ignores any printable character until a whitespace is encountered
 	protected fun ignore_until_whitespace: Int do
-		while not src[pos].is_whitespace do pos += 1
+		while src.length > pos and not src[pos].is_whitespace do pos += 1
 		return pos
 	end
 
 	# Returns the current location as a `Location` object
 	protected fun hot_location: Location do return new Location(line, line_offset)
+
+	# Is `pos` at the end of the source?
+	protected fun eof: Bool do return pos >= src.length
 end
 
 # Information about the location of an entity in a source document