Factorize common strings in generated C.

[nit.git] / src / parser / xss / nodes.xss

diff --git a/src/parser/xss/nodes.xss b/src/parser/xss/nodes.xss
index 3d59406..46cfafd 100644 (file)
--- a/src/parser/xss/nodes.xss
+++ b/src/parser/xss/nodes.xss
@@ -65,6 +65,9 @@ redef class PNode
        # Give a human readable location of the node.
        meth locate: String is abstract
 
+       # Return only the line number of the node
+       meth line_number: Int is abstract
+
        # Debug method: output a message prefixed with the location.
        meth printl(str: String)
        do
@@ -81,6 +84,8 @@ redef class Token
        do
                return "{filename}:{line},{pos}"
        end
+
+       redef meth line_number do return line
 end
 
 redef class Prod
@@ -104,11 +109,20 @@ redef class Prod
        end
 
        redef meth replace_with(n: PNode)
+        do
+                super
+                assert n isa Prod
+                n.first_token = first_token
+                n.last_token = last_token
+        end
+
+       redef meth line_number
        do
-               super
-               assert n isa Prod
-               n.first_token = first_token
-               n.last_token = last_token
+               if first_token != null then
+                       return first_token.line
+               else
+                       return 0
+               end
        end
 end