X-Git-Url: http://nitlanguage.org

diff --git a/src/location.nit b/src/location.nit
index 8ed4428..83ed72f 100644
--- a/src/location.nit
+++ b/src/location.nit
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# This module is used to model Nit source-file and locations in source-file
+# Nit source-file and locations in source-file
 module location
 
 # A raw text Nit source file
@@ -26,7 +26,7 @@ class SourceFile
 	var string: String is noinit
 
 	# The original stream used to initialize `string`
-	var stream: IStream
+	var stream: Reader
 
 	init
 	do
@@ -51,10 +51,25 @@ class Location
 	super Comparable
 	redef type OTHER: Location
 
+	# The associated source-file
 	var file: nullable SourceFile
+
+	# The starting line number (starting from 1)
 	var line_start: Int
+
+	# The stopping line number (starting from 1)
 	var line_end: Int
+
+	# Start of this location on `line_start`
+	#
+	# A `column_start` of 1 means the first column or character.
+	#
+	# If `column_start == 0` this location concerns the whole line.
+	#
+	# Require: `column_start >= 0`
 	var column_start: Int
+
+	# End of this location on `line_end`
 	var column_end: Int
 
 	# The index in the start character in the source
@@ -78,8 +93,6 @@ class Location
 
 	private var text_cache: nullable String = null
 
-	init with_file(f: SourceFile) do init(f,0,0,0,0)
-
 	redef fun ==(other: nullable Object): Bool do
 		if other == null then return false
 		if not other isa Location then return false