blob: 70360eb90fab388d0131bbf66250ec467e54f145 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
module Lrama
class Grammar
class Code
class DestructorCode < Code
def initialize(type:, token_code:, tag:)
super(type: type, token_code: token_code)
@tag = tag
end
private
# * ($$) *yyvaluep
# * (@$) *yylocationp
# * ($:$) error
# * ($1) error
# * (@1) error
# * ($:1) error
def reference_to_c(ref)
case
when ref.type == :dollar && ref.name == "$" # $$
member = @tag.member
"((*yyvaluep).#{member})"
when ref.type == :at && ref.name == "$" # @$
"(*yylocationp)"
when ref.type == :index && ref.name == "$" # $:$
raise "$:#{ref.value} can not be used in #{type}."
when ref.type == :dollar # $n
raise "$#{ref.value} can not be used in #{type}."
when ref.type == :at # @n
raise "@#{ref.value} can not be used in #{type}."
when ref.type == :index # $:n
raise "$:#{ref.value} can not be used in #{type}."
else
raise "Unexpected. #{self}, #{ref}"
end
end
end
end
end
end
|