Sha256: 12276eaf296aa36772a890453c639c49d5cd5d5734f59538238cab94d693d449
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Size: 746 Bytes
Versions: 34
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Stored size: 746 Bytes
Contents
module Opal
# ParserScope is used during lexing to keep track of local variables
# created inside a scope. A lexer scope can be asked if it has a local
# variable defined, and it can also check its parent scope if applicable.
class ParserScope
attr_reader :locals
attr_accessor :parent
# Create new parse scope. Valid types are :block, :class, :module, :def.
#
# @param type [Symbol] scope type
def initialize(type)
@block = type == :block
@locals = []
@parent = nil
end
def add_local(local)
@locals << local
end
def has_local?(local)
return true if @locals.include? local
return @parent.has_local?(local) if @parent and @block
false
end
end
end
Version data entries
34 entries across 34 versions & 2 rubygems