Class: Rattler::BackEnd::ParserGenerator::MatchGenerator

Inherits:
ExprGenerator
  • Object
show all
Defined in:
lib/rattler/back_end/parser_generator/match_generator.rb

Direct Known Subclasses

NestedMatchGenerator, TopLevelMatchGenerator

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from ExprGenerator

#gen_direct_action, #gen_dispatch_action, #gen_intermediate, #initialize

Methods included from Parsers

define

Constructor Details

This class inherits a constructor from Rattler::BackEnd::ParserGenerator::ExprGenerator

Class Method Details

.nested(*args) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 56

def MatchGenerator.nested(*args)
  NestedMatchGenerator.new(*args)
end

.top_level(*args) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 65

def MatchGenerator.top_level(*args)
  TopLevelMatchGenerator.new(*args)
end

Instance Method Details

#gen_assert(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 12

def gen_assert(match, scope={})
  expr do
    gen_intermediate_assert match, scope
    @g << ' && true'
  end
end

#gen_basic(match, scope = {}) ⇒ Object

:nodoc:



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 8

def gen_basic(match, scope={})
  @g << "@scanner.scan(#{match.re.inspect})"
end

#gen_disallow(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 19

def gen_disallow(match, scope={})
  expr do
    gen_intermediate_disallow match, scope
    @g << ' && true'
  end
end

#gen_intermediate_assert(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 37

def gen_intermediate_assert(match, scope={})
  @g << "@scanner.skip(#{/(?=#{match.re.source})/.inspect})"
end

#gen_intermediate_disallow(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 41

def gen_intermediate_disallow(match, scope={})
  @g << "@scanner.skip(#{/(?!#{match.re.source})/.inspect})"
end

#gen_intermediate_skip(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 45

def gen_intermediate_skip(match, scope={})
  @g << "@scanner.skip(#{match.re.inspect})"
end

#gen_skip(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 30

def gen_skip(match, scope={})
  expr do
    gen_intermediate_skip match, scope
    @g << ' && true'
  end
end

#gen_token(match, scope = {}) ⇒ Object 



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# File 'lib/rattler/back_end/parser_generator/match_generator.rb', line 26

def gen_token(match, scope={})
  gen_basic match, scope
end