# Return null if not an integer.
fun as_int: nullable Int
do
- if not self isa AIntExpr then return null
- return self.value.as(not null)
- end
-
- # Get `self` as a single identifier.
- # Return null if not a single identifier.
- fun as_id: nullable String
- do
- if self isa AMethidExpr then
- return self.collect_text
- end
- if not self isa ACallExpr then return null
- if not self.n_expr isa AImplicitSelfExpr then return null
- if not self.n_args.n_exprs.is_empty then return null
- return self.n_id.text
+ if not self isa AIntegerExpr then return null
+ return self.value.as(not null).to_i
end
end
-
-redef class AIntExpr
+redef class AIntegerExpr
# The value of the literal int once computed.
- var value: nullable Int
-end
+ var value: nullable Numeric
-redef class ADecIntExpr
- redef fun accept_literal(v)
- do
- self.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
+ redef fun accept_literal(v) do
+ value = n_integer.text.to_num
+ if value == null then
+ v.toolcontext.error(hot_location, "Error: invalid literal `{n_integer.text}`")
+ end
end
end
do
var txt = self.n_char.text.unescape_nit
if txt.length != 3 then
- v.toolcontext.error(self.hot_location, "Invalid character literal {txt}")
+ v.toolcontext.error(self.hot_location, "Syntax Error: invalid character literal `{txt}`.")
return
end
self.value = txt.chars[1]