Class: Rattler::Compiler::ParserGenerator::SequenceGenerator

Inherits:
ExprGenerator
  • Object
show all
Includes:
SequenceGenerating
Defined in:
lib/rattler/compiler/parser_generator/sequence_generator.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SequenceGenerating

#gen_assert, #gen_disallow, #gen_skip, #gen_token

Methods included from SubGenerating

#gen_nested, #gen_top_level, #generate

Methods inherited from ExprGenerator

#gen_intermediate, #gen_intermediate_assert, #gen_intermediate_disallow, #gen_intermediate_skip, #gen_token, #initialize

Constructor Details

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

Class Method Details

.nested(*args) ⇒ Object 



44
45
46
 
# File 'lib/rattler/compiler/parser_generator/sequence_generator.rb', line 44

def SequenceGenerator.nested(*args)
  NestedSequenceGenerator.new(*args)
end

.top_level(*args) ⇒ Object 



53
54
55
 
# File 'lib/rattler/compiler/parser_generator/sequence_generator.rb', line 53

def SequenceGenerator.top_level(*args)
  TopLevelSequenceGenerator.new(*args)
end

Instance Method Details

#gen_basic(sequence, scope = ParserScope.empty) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
 
# File 'lib/rattler/compiler/parser_generator/sequence_generator.rb', line 9

def gen_basic(sequence, scope = ParserScope.empty)
  with_backtracking do
    gen_children_capturing(sequence, scope.nest) do |last_child, scope|
      if sequence.capture_count == 1 and last_child.capturing?
        gen_nested last_child, :basic, scope
      else
        @g.suffix(' &&') { scope = gen_capturing last_child, scope }
        @g.newline << result_expr(scope)
      end
    end
  end
end