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- ripper/lib/ripper/filter.rb
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Ripper::Filter
This class handles only scanner events, which are dispatched in the 'right' order (same with input).
Public Class Methods
new(src, filename = '-', lineno = 1)
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Creates a new Ripper::Filter instance, passes
parameters src, filename, and lineno
to Ripper.new
The lexer is for internal use only.
# File ripper/lib/ripper/filter.rb, line 23
def initialize(src, filename = '-', lineno = 1)
@__lexer = Lexer.new(src, filename, lineno)
@__line = nil
@__col = nil
@__state = nil
end
Public Instance Methods
column()
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The column number of the current token. This value starts from 0. This method is valid only in event handlers.
# File ripper/lib/ripper/filter.rb, line 45
def column
@__col
end
filename()
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The file name of the input.
# File ripper/lib/ripper/filter.rb, line 31
def filename
@__lexer.filename
end
lineno()
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The line number of the current token. This value starts from 1. This method is valid only in event handlers.
# File ripper/lib/ripper/filter.rb, line 38
def lineno
@__line
end
parse(init = nil)
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Starts the parser. init is a data accumulator and is passed to
the next event handler (as of Enumerable#inject).
# File ripper/lib/ripper/filter.rb, line 58
def parse(init = nil)
data = init
@__lexer.lex.each do |pos, event, tok, state|
@__line, @__col = *pos
@__state = state
data = if respond_to?(event, true)
then __send__(event, tok, data)
else on_default(event, tok, data)
end
end
data
end