src/literal: Support for the new binary and octal literals

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>

diff --git a/src/literal.nit b/src/literal.nit
index d6cb84e..1d64458 100644 (file)
--- a/src/literal.nit
+++ b/src/literal.nit
@@ -87,6 +87,16 @@ redef class AExpr
        end
 end
 
+redef class Text
+       private fun remove_underscores: Text do
+               var b = new FlatBuffer
+               for i in chars do
+                       if i == '_' then continue
+                       b.add i
+               end
+               return b
+       end
+end
 
 redef class AIntExpr
        # The value of the literal int once computed.
@@ -96,14 +106,43 @@ end
 redef class ADecIntExpr
        redef fun accept_literal(v)
        do
-               self.value = self.n_number.text.to_i
+               value = self.n_number.text.to_i
        end
 end
 
 redef class AHexIntExpr
        redef fun accept_literal(v)
        do
-               self.value = self.n_hex_number.text.substring_from(2).to_hex
+               var s = self.n_hex_number.text.substring_from(2).remove_underscores
+               if s.is_empty then
+                       v.toolcontext.error(location, "Error: invalid hexadecimal literal")
+                       return
+               end
+               value = s.to_hex
+       end
+end
+
+redef class ABinIntExpr
+       redef fun accept_literal(v)
+       do
+               var s = self.n_bin_number.text.substring_from(2).remove_underscores
+               if s.is_empty then
+                       v.toolcontext.error(location, "Error: invalid binary literal")
+                       return
+               end
+               value = s.to_bin
+       end
+end
+
+redef class AOctIntExpr
+       redef fun accept_literal(v)
+       do
+               var s = self.n_oct_number.text.substring_from(2).remove_underscores
+               if s.is_empty then
+                       v.toolcontext.error(location, "Error: invalid octal literal")
+                       return
+               end
+               value = s.to_oct
        end
 end