class Parslet::Atoms::Sequence
A sequence of parslets, matched from left to right. Denoted by '>>'
Example:
str('a') >> str('b') # matches 'a', then 'b'
Attributes
parslets[R]
Public Class Methods
new(*parslets)
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Calls superclass method
# File lib/parslet/atoms/sequence.rb, line 9 def initialize(*parslets) super() @parslets = parslets end
Public Instance Methods
>>(parslet)
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# File lib/parslet/atoms/sequence.rb, line 21 def >>(parslet) self.class.new(* @parslets+[parslet]) end
accept(visitor)
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Call back visitors visit_sequence method. See parslet/export for an example.
# File lib/parslet/atoms/visitor.rb, line 42 def accept(visitor) visitor.visit_sequence(parslets) end
error_msgs()
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# File lib/parslet/atoms/sequence.rb, line 15 def error_msgs @error_msgs ||= { failed: "Failed to match sequence (#{inspect})" } end
to_s_inner(prec)
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# File lib/parslet/atoms/sequence.rb, line 45 def to_s_inner(prec) parslets.map { |p| p.to_s(prec) }.join(' ') end
try(source, context, consume_all)
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# File lib/parslet/atoms/sequence.rb, line 25 def try(source, context, consume_all) # Presize an array result = Array.new(parslets.size + 1) result[0] = :sequence parslets.each_with_index do |p, idx| child_consume_all = consume_all && (idx == parslets.size-1) success, value = p.apply(source, context, child_consume_all) unless success return context.err(self, source, error_msgs[:failed], [value]) end result[idx+1] = value end return succ(result) end