Add support for adjusting Index to Inline

[ydah]

No description provided.

[yui-knk]

[note]
Some methods on RuleBuilder require parameterizing_rule_resolver for its argumen, e.g. #setup_rules, #has_inline_rules? and #resolve_inline_rules. It might be better to pass parameterizing_rule_resolver for RuleBuilder#initialize by adding helper function to Grammar which calls Grammar::RuleBuilder.new with @parameterizing_rule_resolver
It's not directly related to this PR, so I don't require to change it in this PR.

[yui-knk]

@ydah The direction seems good. Could you check the logic of reference overwrite, #394 (comment) ?

[ydah]

@yui-knk Thank you for your review! I updated this PR.

[ydah]

[note] Some methods on RuleBuilder require parameterizing_rule_resolver for its argumen, e.g. #setup_rules, #has_inline_rules? and #resolve_inline_rules. It might be better to pass parameterizing_rule_resolver for RuleBuilder#initialize by adding helper function to Grammar which calls Grammar::RuleBuilder.new with @parameterizing_rule_resolver It's not directly related to this PR, so I don't require to change it in this PR.

@yui-knk Add refactoring commit: 514e61c

[ydah]

@yui-knk I rebased and fix conflict.

[yui-knk]

LGTM!