diff options
author | yui-knk <spiketeika@gmail.com> | 2024-03-22 08:17:51 +0900 |
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committer | Yuichiro Kaneko <spiketeika@gmail.com> | 2024-03-22 11:53:15 +0900 |
commit | c5045830b7ed3bf664633871ca21fcfe03a42aa7 (patch) | |
tree | c592834d65fe6c4e76459771d4ced00589540efe /tool/lrama/lib/lrama/grammar/code/destructor_code.rb | |
parent | b4d73e9f80aa5fe72c39f42a88727fed0abb261b (diff) |
Lrama v0.6.4
Diffstat (limited to 'tool/lrama/lib/lrama/grammar/code/destructor_code.rb')
-rw-r--r-- | tool/lrama/lib/lrama/grammar/code/destructor_code.rb | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tool/lrama/lib/lrama/grammar/code/destructor_code.rb b/tool/lrama/lib/lrama/grammar/code/destructor_code.rb new file mode 100644 index 0000000000..70360eb90f --- /dev/null +++ b/tool/lrama/lib/lrama/grammar/code/destructor_code.rb @@ -0,0 +1,40 @@ +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 |