Class: Rattler::Parsers::Skip

Inherits:
Parser show all
Defined in:
lib/rattler/parsers/skip.rb

Overview

Skip decorates a parser to skip over what it matches without capturing the results

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Parser

#&, #labeled?, #one_or_more, #optional, #variable_capture_count?, #zero_or_more, #|

Methods inherited from Util::Node

#==, [], #[], #attrs, #can_equal?, #child, #children, #each, #empty?, #eql?, #initialize, #inspect, #method_missing, #name, #respond_to?, #same_contents?, #to_graphviz, #with_attrs, #with_attrs!, #with_children

Constructor Details

This class inherits a constructor from Rattler::Util::Node

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Rattler::Util::Node

Class Method Details

.parsed(results, *_) ⇒ Object 



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# File 'lib/rattler/parsers/skip.rb', line 18

def self.parsed(results, *_) #:nodoc:
  self[results.first]
end

Instance Method Details

#capturing? ⇒ Boolean

Always false

Returns:

  • (Boolean) —

    false



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# File 'lib/rattler/parsers/skip.rb', line 35

def capturing?
  false
end

#parse(scanner, rules, scope = {}) ⇒ Boolean

If the decorated parser matches return true, otherwise return a false value.

Returns:

  • (Boolean) —

    true if the decorated parser matches at the parse position



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# File 'lib/rattler/parsers/skip.rb', line 29

def parse(scanner, rules, scope = {})
  child.parse(scanner, rules, scope) && true
end

#skip ⇒ Object

Returns a new parser that skips over what this parser matches.

Returns:

  • a new parser that skips over what this parser matches



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# File 'lib/rattler/parsers/skip.rb', line 49

def skip
  self
end

#with_ws(ws) ⇒ Parser

Return a new parser that uses ws to skip whitespace before matching tokens.

Parameters:

  • ws (Parser) —

    the parser used to skip whitespace

Returns:

  • (Parser) —

    a new parser that uses ws to skip whitespace



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# File 'lib/rattler/parsers/skip.rb', line 44

def with_ws(ws)
  child.with_ws(ws).skip
end