Module: WebIDL::Parser::IDL

Includes:
Treetop::Runtime
Included in:
IDLParser
Defined in:
lib/webidl/parser/idl.rb

Overview

Defined Under Namespace

Modules: AbsoluteScopedName0, Argument0, ArgumentList0, Arguments0, Attribute0, BlockComment0, BlockComment1, BooleanLiteral0, Const0, Definitions0, Definitions1, Exception0, ExceptionField0, ExceptionList0, ExceptionMembers0, ExtendedAttributeArgList0, ExtendedAttributeIdent0, ExtendedAttributeList0, ExtendedAttributeNamedArgList0, ExtendedAttributeNamedArgList1, ExtendedAttributeNoArg0, ExtendedAttributeScopedName0, ExtendedAttributes0, Float0, Float1, Float2, Float3, Float4, Float5, GetRaises0, Identifier0, Identifier1, ImplementsStatement0, Integer0, Integer1, Integer2, Integer3, IntegerType0, Interface0, InterfaceInheritance0, InterfaceMembers0, LineComment0, LineComment1, Module0, NonSpace0, NullableType0, NullableType1, NullableType2, NullableType3, NullableType4, NullableType5, NullableType6, OmittableSpecials0, Operation0, OperationRest0, Raises0, RelativeScopedName0, ScopedNameList0, ScopedNameParts0, ScopedNames0, SetRaises0, Specials0, String0, StringifierAttributeOrOperation0, Type0, TypeDef0, UnsignedIntegerType0, Ws0, Ws1

Instance Method Summary collapse

Instance Method Details

#_nt_AbsoluteScopedNameObject



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# File 'lib/webidl/parser/idl.rb', line 4460

def _nt_AbsoluteScopedName
  start_index = index
  if node_cache[:AbsoluteScopedName].has_key?(index)
    cached = node_cache[:AbsoluteScopedName][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("::", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure("::")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_identifier
    s0 << r2
    if r2
      r3 = _nt_ScopedNameParts
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::AbsoluteScopedName,input, i0...index, s0)
    r0.extend(AbsoluteScopedName0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:AbsoluteScopedName][start_index] = r0

  r0
end

#_nt_ArgumentObject



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# File 'lib/webidl/parser/idl.rb', line 2222

def _nt_Argument
  start_index = index
  if node_cache[:Argument].has_key?(index)
    cached = node_cache[:Argument][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_ExtendedAttributeList
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_In
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          r5 = _nt_Optional
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              r7 = _nt_Type
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  r9 = _nt_Ellipsis
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      r11 = _nt_identifier
                      s0 << r11
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Argument,input, i0...index, s0)
    r0.extend(Argument0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Argument][start_index] = r0

  r0
end

#_nt_ArgumentListObject



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# File 'lib/webidl/parser/idl.rb', line 2064

def _nt_ArgumentList
  start_index = index
  if node_cache[:ArgumentList].has_key?(index)
    cached = node_cache[:ArgumentList][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  r2 = _nt_Argument
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_Arguments
      s1 << r4
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::ArgumentList,input, i1...index, s1)
    r1.extend(ArgumentList0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ArgumentList][start_index] = r0

  r0
end

#_nt_ArgumentsObject



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# File 'lib/webidl/parser/idl.rb', line 2122

def _nt_Arguments
  start_index = index
  if node_cache[:Arguments].has_key?(index)
    cached = node_cache[:Arguments][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?(",", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure(",")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_Argument
      s1 << r4
      if r4
        r5 = _nt_ws
        s1 << r5
        if r5
          r6 = _nt_Arguments
          s1 << r6
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::ArgumentList,input, i1...index, s1)
    r1.extend(Arguments0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:Arguments][start_index] = r0

  r0
end

#_nt_AttributeObject



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# File 'lib/webidl/parser/idl.rb', line 1316

def _nt_Attribute
  start_index = index
  if node_cache[:Attribute].has_key?(index)
    cached = node_cache[:Attribute][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_ReadOnly
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      if has_terminal?("attribute", false, index)
        r3 = instantiate_node(SyntaxNode,input, index...(index + 9))
        @index += 9
      else
        terminal_parse_failure("attribute")
        r3 = nil
      end
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          r5 = _nt_Type
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              r7 = _nt_identifier
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  r9 = _nt_GetRaises
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      r11 = _nt_SetRaises
                      s0 << r11
                      if r11
                        r12 = _nt_ws
                        s0 << r12
                        if r12
                          if has_terminal?(";", false, index)
                            r13 = instantiate_node(SyntaxNode,input, index...(index + 1))
                            @index += 1
                          else
                            terminal_parse_failure(";")
                            r13 = nil
                          end
                          s0 << r13
                        end
                      end
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Attribute,input, i0...index, s0)
    r0.extend(Attribute0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Attribute][start_index] = r0

  r0
end

#_nt_AttributeOrOperationObject



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# File 'lib/webidl/parser/idl.rb', line 1160

def _nt_AttributeOrOperation
  start_index = index
  if node_cache[:AttributeOrOperation].has_key?(index)
    cached = node_cache[:AttributeOrOperation][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_StringifierAttributeOrOperation
  if r1
    r0 = r1
  else
    r2 = _nt_Attribute
    if r2
      r0 = r2
    else
      r3 = _nt_Operation
      if r3
        r0 = r3
      else
        @index = i0
        r0 = nil
      end
    end
  end

  node_cache[:AttributeOrOperation][start_index] = r0

  r0
end

#_nt_block_commentObject



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# File 'lib/webidl/parser/idl.rb', line 5487

def _nt_block_comment
  start_index = index
  if node_cache[:block_comment].has_key?(index)
    cached = node_cache[:block_comment][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?('/*', false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure('/*')
    r1 = nil
  end
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      i3, s3 = index, []
      i4 = index
      if has_terminal?('*/', false, index)
        r5 = instantiate_node(SyntaxNode,input, index...(index + 2))
        @index += 2
      else
        terminal_parse_failure('*/')
        r5 = nil
      end
      if r5
        r4 = nil
      else
        @index = i4
        r4 = instantiate_node(SyntaxNode,input, index...index)
      end
      s3 << r4
      if r4
        if index < input_length
          r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
          @index += 1
        else
          terminal_parse_failure("any character")
          r6 = nil
        end
        s3 << r6
      end
      if s3.last
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
        r3.extend(BlockComment0)
      else
        @index = i3
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
    if r2
      if has_terminal?('*/', false, index)
        r7 = instantiate_node(SyntaxNode,input, index...(index + 2))
        @index += 2
      else
        terminal_parse_failure('*/')
        r7 = nil
      end
      s0 << r7
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(BlockComment1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:block_comment][start_index] = r0

  r0
end

#_nt_BooleanLiteralObject



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# File 'lib/webidl/parser/idl.rb', line 1116

def _nt_BooleanLiteral
  start_index = index
  if node_cache[:BooleanLiteral].has_key?(index)
    cached = node_cache[:BooleanLiteral][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  if has_terminal?("true", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 4))
    @index += 4
  else
    terminal_parse_failure("true")
    r1 = nil
  end
  if r1
    r0 = r1
    r0.extend(BooleanLiteral0)
  else
    if has_terminal?("false", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 5))
      @index += 5
    else
      terminal_parse_failure("false")
      r2 = nil
    end
    if r2
      r0 = r2
      r0.extend(BooleanLiteral0)
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:BooleanLiteral][start_index] = r0

  r0
end

#_nt_ConstObject



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# File 'lib/webidl/parser/idl.rb', line 992

def _nt_Const
  start_index = index
  if node_cache[:Const].has_key?(index)
    cached = node_cache[:Const][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("const", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 5))
    @index += 5
  else
    terminal_parse_failure("const")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_Type
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          r5 = _nt_identifier
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              if has_terminal?("=", false, index)
                r7 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure("=")
                r7 = nil
              end
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  r9 = _nt_ConstExpr
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      if has_terminal?(";", false, index)
                        r11 = instantiate_node(SyntaxNode,input, index...(index + 1))
                        @index += 1
                      else
                        terminal_parse_failure(";")
                        r11 = nil
                      end
                      s0 << r11
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Const,input, i0...index, s0)
    r0.extend(Const0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Const][start_index] = r0

  r0
end

#_nt_ConstExprObject



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# File 'lib/webidl/parser/idl.rb', line 1077

def _nt_ConstExpr
  start_index = index
  if node_cache[:ConstExpr].has_key?(index)
    cached = node_cache[:ConstExpr][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_BooleanLiteral
  if r1
    r0 = r1
  else
    r2 = _nt_integer
    if r2
      r0 = r2
    else
      r3 = _nt_float
      if r3
        r0 = r3
      else
        @index = i0
        r0 = nil
      end
    end
  end

  node_cache[:ConstExpr][start_index] = r0

  r0
end

#_nt_DefinitionObject



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# File 'lib/webidl/parser/idl.rb', line 116

def _nt_Definition
  start_index = index
  if node_cache[:Definition].has_key?(index)
    cached = node_cache[:Definition][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_Module
  if r1
    r0 = r1
  else
    r2 = _nt_Interface
    if r2
      r0 = r2
    else
      r3 = _nt_Exception
      if r3
        r0 = r3
      else
        r4 = _nt_TypeDef
        if r4
          r0 = r4
        else
          r5 = _nt_ImplementsStatement
          if r5
            r0 = r5
          else
            @index = i0
            r0 = nil
          end
        end
      end
    end
  end

  node_cache[:Definition][start_index] = r0

  r0
end

#_nt_DefinitionsObject



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# File 'lib/webidl/parser/idl.rb', line 51

def _nt_Definitions
  start_index = index
  if node_cache[:Definitions].has_key?(index)
    cached = node_cache[:Definitions][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_ws
  s0 << r1
  if r1
    i3, s3 = index, []
    r4 = _nt_ExtendedAttributeList
    s3 << r4
    if r4
      r5 = _nt_ws
      s3 << r5
      if r5
        r6 = _nt_Definition
        s3 << r6
        if r6
          r7 = _nt_ws
          s3 << r7
          if r7
            r8 = _nt_Definitions
            s3 << r8
          end
        end
      end
    end
    if s3.last
      r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
      r3.extend(Definitions0)
    else
      @index = i3
      r3 = nil
    end
    if r3
      r2 = r3
    else
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s0 << r2
    if r2
      r9 = _nt_ws
      s0 << r9
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Definitions,input, i0...index, s0)
    r0.extend(Definitions1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Definitions][start_index] = r0

  r0
end

#_nt_EllipsisObject



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# File 'lib/webidl/parser/idl.rb', line 2347

def _nt_Ellipsis
  start_index = index
  if node_cache[:Ellipsis].has_key?(index)
    cached = node_cache[:Ellipsis][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("...", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 3))
    @index += 3
  else
    terminal_parse_failure("...")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:Ellipsis][start_index] = r0

  r0
end

#_nt_ExceptionObject



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# File 'lib/webidl/parser/idl.rb', line 616

def _nt_Exception
  start_index = index
  if node_cache[:Exception].has_key?(index)
    cached = node_cache[:Exception][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("exception", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 9))
    @index += 9
  else
    terminal_parse_failure("exception")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_identifier
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          if has_terminal?("{", false, index)
            r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
            @index += 1
          else
            terminal_parse_failure("{")
            r5 = nil
          end
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              r7 = _nt_ExceptionMembers
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  if has_terminal?("}", false, index)
                    r9 = instantiate_node(SyntaxNode,input, index...(index + 1))
                    @index += 1
                  else
                    terminal_parse_failure("}")
                    r9 = nil
                  end
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      if has_terminal?(";", false, index)
                        r11 = instantiate_node(SyntaxNode,input, index...(index + 1))
                        @index += 1
                      else
                        terminal_parse_failure(";")
                        r11 = nil
                      end
                      s0 << r11
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Exception,input, i0...index, s0)
    r0.extend(Exception0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Exception][start_index] = r0

  r0
end

#_nt_ExceptionFieldObject



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# File 'lib/webidl/parser/idl.rb', line 2425

def _nt_ExceptionField
  start_index = index
  if node_cache[:ExceptionField].has_key?(index)
    cached = node_cache[:ExceptionField][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_Type
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_identifier
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          if has_terminal?(";", false, index)
            r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
            @index += 1
          else
            terminal_parse_failure(";")
            r5 = nil
          end
          s0 << r5
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ExceptionField,input, i0...index, s0)
    r0.extend(ExceptionField0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ExceptionField][start_index] = r0

  r0
end

#_nt_ExceptionListObject



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# File 'lib/webidl/parser/idl.rb', line 2003

def _nt_ExceptionList
  start_index = index
  if node_cache[:ExceptionList].has_key?(index)
    cached = node_cache[:ExceptionList][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("(", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("(")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ScopedNameList
    s0 << r2
    if r2
      if has_terminal?(")", false, index)
        r3 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        terminal_parse_failure(")")
        r3 = nil
      end
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(ExceptionList0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ExceptionList][start_index] = r0

  r0
end

#_nt_ExceptionMemberObject



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# File 'lib/webidl/parser/idl.rb', line 2376

def _nt_ExceptionMember
  start_index = index
  if node_cache[:ExceptionMember].has_key?(index)
    cached = node_cache[:ExceptionMember][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_Const
  if r1
    r0 = r1
  else
    r2 = _nt_ExceptionField
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:ExceptionMember][start_index] = r0

  r0
end

#_nt_ExceptionMembersObject



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# File 'lib/webidl/parser/idl.rb', line 733

def _nt_ExceptionMembers
  start_index = index
  if node_cache[:ExceptionMembers].has_key?(index)
    cached = node_cache[:ExceptionMembers][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  r2 = _nt_ExtendedAttributeList
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_ExceptionMember
      s1 << r4
      if r4
        r5 = _nt_ws
        s1 << r5
        if r5
          r6 = _nt_ExceptionMembers
          s1 << r6
          if r6
            r7 = _nt_ws
            s1 << r7
          end
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::InterfaceMembers,input, i1...index, s1)
    r1.extend(ExceptionMembers0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ExceptionMembers][start_index] = r0

  r0
end

#_nt_ExtendedAttributeObject



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# File 'lib/webidl/parser/idl.rb', line 2637

def _nt_ExtendedAttribute
  start_index = index
  if node_cache[:ExtendedAttribute].has_key?(index)
    cached = node_cache[:ExtendedAttribute][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_ExtendedAttributeNamedArgList
  if r1
    r0 = r1
  else
    r2 = _nt_ExtendedAttributeIdent
    if r2
      r0 = r2
    else
      r3 = _nt_ExtendedAttributeScopedName
      if r3
        r0 = r3
      else
        r4 = _nt_ExtendedAttributeArgList
        if r4
          r0 = r4
        else
          r5 = _nt_ExtendedAttributeNoArg
          if r5
            r0 = r5
          else
            @index = i0
            r0 = nil
          end
        end
      end
    end
  end

  node_cache[:ExtendedAttribute][start_index] = r0

  r0
end

#_nt_ExtendedAttributeArgListObject



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# File 'lib/webidl/parser/idl.rb', line 2726

def _nt_ExtendedAttributeArgList
  start_index = index
  if node_cache[:ExtendedAttributeArgList].has_key?(index)
    cached = node_cache[:ExtendedAttributeArgList][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_identifier
  s0 << r1
  if r1
    if has_terminal?("(", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("(")
      r2 = nil
    end
    s0 << r2
    if r2
      r3 = _nt_ws
      s0 << r3
      if r3
        r4 = _nt_ArgumentList
        s0 << r4
        if r4
          r5 = _nt_ws
          s0 << r5
          if r5
            if has_terminal?(")", false, index)
              r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
              @index += 1
            else
              terminal_parse_failure(")")
              r6 = nil
            end
            s0 << r6
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ExtendedAttributeArgList,input, i0...index, s0)
    r0.extend(ExtendedAttributeArgList0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ExtendedAttributeArgList][start_index] = r0

  r0
end

#_nt_ExtendedAttributeIdentObject



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# File 'lib/webidl/parser/idl.rb', line 2847

def _nt_ExtendedAttributeIdent
  start_index = index
  if node_cache[:ExtendedAttributeIdent].has_key?(index)
    cached = node_cache[:ExtendedAttributeIdent][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_identifier
  s0 << r1
  if r1
    if has_terminal?("=", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("=")
      r2 = nil
    end
    s0 << r2
    if r2
      r3 = _nt_identifier
      s0 << r3
      if r3
        i4 = index
        if has_terminal?("::", false, index)
          r5 = instantiate_node(SyntaxNode,input, index...(index + 2))
          @index += 2
        else
          terminal_parse_failure("::")
          r5 = nil
        end
        if r5
          r4 = nil
        else
          @index = i4
          r4 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r4
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ExtendedAttributeIdent,input, i0...index, s0)
    r0.extend(ExtendedAttributeIdent0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ExtendedAttributeIdent][start_index] = r0

  r0
end

#_nt_ExtendedAttributeListObject



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# File 'lib/webidl/parser/idl.rb', line 2497

def _nt_ExtendedAttributeList
  start_index = index
  if node_cache[:ExtendedAttributeList].has_key?(index)
    cached = node_cache[:ExtendedAttributeList][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?("[", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("[")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_ExtendedAttribute
      s1 << r4
      if r4
        r5 = _nt_ws
        s1 << r5
        if r5
          r6 = _nt_ExtendedAttributes
          s1 << r6
          if r6
            r7 = _nt_ws
            s1 << r7
            if r7
              if has_terminal?("]", false, index)
                r8 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure("]")
                r8 = nil
              end
              s1 << r8
            end
          end
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::ExtendedAttributeList,input, i1...index, s1)
    r1.extend(ExtendedAttributeList0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ExtendedAttributeList][start_index] = r0

  r0
end

#_nt_ExtendedAttributeNamedArgListObject



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# File 'lib/webidl/parser/idl.rb', line 2934

def _nt_ExtendedAttributeNamedArgList
  start_index = index
  if node_cache[:ExtendedAttributeNamedArgList].has_key?(index)
    cached = node_cache[:ExtendedAttributeNamedArgList][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_identifier
  s0 << r1
  if r1
    if has_terminal?("=", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("=")
      r2 = nil
    end
    s0 << r2
    if r2
      i3, s3 = index, []
      r4 = _nt_identifier
      s3 << r4
      if r4
        if has_terminal?("(", false, index)
          r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
          @index += 1
        else
          terminal_parse_failure("(")
          r5 = nil
        end
        s3 << r5
        if r5
          r6 = _nt_ws
          s3 << r6
          if r6
            r7 = _nt_ArgumentList
            s3 << r7
            if r7
              r8 = _nt_ws
              s3 << r8
              if r8
                if has_terminal?(")", false, index)
                  r9 = instantiate_node(SyntaxNode,input, index...(index + 1))
                  @index += 1
                else
                  terminal_parse_failure(")")
                  r9 = nil
                end
                s3 << r9
              end
            end
          end
        end
      end
      if s3.last
        r3 = instantiate_node(ParseTree::ExtendedAttributeArgList,input, i3...index, s3)
        r3.extend(ExtendedAttributeNamedArgList0)
      else
        @index = i3
        r3 = nil
      end
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ExtendedAttributeNamedArgList,input, i0...index, s0)
    r0.extend(ExtendedAttributeNamedArgList1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ExtendedAttributeNamedArgList][start_index] = r0

  r0
end

#_nt_ExtendedAttributeNoArgObject



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# File 'lib/webidl/parser/idl.rb', line 2688

def _nt_ExtendedAttributeNoArg
  start_index = index
  if node_cache[:ExtendedAttributeNoArg].has_key?(index)
    cached = node_cache[:ExtendedAttributeNoArg][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  r0 = _nt_identifier
  r0.extend(ExtendedAttributeNoArg0)

  node_cache[:ExtendedAttributeNoArg][start_index] = r0

  r0
end

#_nt_ExtendedAttributesObject



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# File 'lib/webidl/parser/idl.rb', line 2583

def _nt_ExtendedAttributes
  start_index = index
  if node_cache[:ExtendedAttributes].has_key?(index)
    cached = node_cache[:ExtendedAttributes][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?(",", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure(",")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_ExtendedAttribute
      s1 << r4
      if r4
        r5 = _nt_ws
        s1 << r5
        if r5
          r6 = _nt_ExtendedAttributes
          s1 << r6
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::ExtendedAttributeList,input, i1...index, s1)
    r1.extend(ExtendedAttributes0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ExtendedAttributes][start_index] = r0

  r0
end

#_nt_ExtendedAttributeScopedNameObject



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# File 'lib/webidl/parser/idl.rb', line 2795

def _nt_ExtendedAttributeScopedName
  start_index = index
  if node_cache[:ExtendedAttributeScopedName].has_key?(index)
    cached = node_cache[:ExtendedAttributeScopedName][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_identifier
  s0 << r1
  if r1
    if has_terminal?("=", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("=")
      r2 = nil
    end
    s0 << r2
    if r2
      r3 = _nt_ScopedName
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ExtendedAttributeScopedName,input, i0...index, s0)
    r0.extend(ExtendedAttributeScopedName0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ExtendedAttributeScopedName][start_index] = r0

  r0
end

#_nt_floatObject



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# File 'lib/webidl/parser/idl.rb', line 4799

def _nt_float
  start_index = index
  if node_cache[:float].has_key?(index)
    cached = node_cache[:float][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  i1, s1 = index, []
  if has_terminal?("-", false, index)
    r3 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("-")
    r3 = nil
  end
  if r3
    r2 = r3
  else
    r2 = instantiate_node(SyntaxNode,input, index...index)
  end
  s1 << r2
  if r2
    i4 = index
    i5, s5 = index, []
    s6, i6 = [], index
    loop do
      if has_terminal?('\G[0-9]', true, index)
        r7 = true
        @index += 1
      else
        r7 = nil
      end
      if r7
        s6 << r7
      else
        break
      end
    end
    if s6.empty?
      @index = i6
      r6 = nil
    else
      r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
    end
    s5 << r6
    if r6
      if has_terminal?(".", false, index)
        r8 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        terminal_parse_failure(".")
        r8 = nil
      end
      s5 << r8
      if r8
        s9, i9 = [], index
        loop do
          if has_terminal?('\G[0-9]', true, index)
            r10 = true
            @index += 1
          else
            r10 = nil
          end
          if r10
            s9 << r10
          else
            break
          end
        end
        r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
        s5 << r9
      end
    end
    if s5.last
      r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
      r5.extend(Float0)
    else
      @index = i5
      r5 = nil
    end
    if r5
      r4 = r5
    else
      i11, s11 = index, []
      s12, i12 = [], index
      loop do
        if has_terminal?('\G[0-9]', true, index)
          r13 = true
          @index += 1
        else
          r13 = nil
        end
        if r13
          s12 << r13
        else
          break
        end
      end
      r12 = instantiate_node(SyntaxNode,input, i12...index, s12)
      s11 << r12
      if r12
        if has_terminal?(".", false, index)
          r14 = instantiate_node(SyntaxNode,input, index...(index + 1))
          @index += 1
        else
          terminal_parse_failure(".")
          r14 = nil
        end
        s11 << r14
        if r14
          s15, i15 = [], index
          loop do
            if has_terminal?('\G[0-9]', true, index)
              r16 = true
              @index += 1
            else
              r16 = nil
            end
            if r16
              s15 << r16
            else
              break
            end
          end
          if s15.empty?
            @index = i15
            r15 = nil
          else
            r15 = instantiate_node(SyntaxNode,input, i15...index, s15)
          end
          s11 << r15
        end
      end
      if s11.last
        r11 = instantiate_node(SyntaxNode,input, i11...index, s11)
        r11.extend(Float1)
      else
        @index = i11
        r11 = nil
      end
      if r11
        r4 = r11
      else
        @index = i4
        r4 = nil
      end
    end
    s1 << r4
    if r4
      i18, s18 = index, []
      if has_terminal?('\G[Ee]', true, index)
        r19 = true
        @index += 1
      else
        r19 = nil
      end
      s18 << r19
      if r19
        if has_terminal?('\G[+-]', true, index)
          r21 = true
          @index += 1
        else
          r21 = nil
        end
        if r21
          r20 = r21
        else
          r20 = instantiate_node(SyntaxNode,input, index...index)
        end
        s18 << r20
        if r20
          s22, i22 = [], index
          loop do
            if has_terminal?('\G[0-9]', true, index)
              r23 = true
              @index += 1
            else
              r23 = nil
            end
            if r23
              s22 << r23
            else
              break
            end
          end
          if s22.empty?
            @index = i22
            r22 = nil
          else
            r22 = instantiate_node(SyntaxNode,input, i22...index, s22)
          end
          s18 << r22
        end
      end
      if s18.last
        r18 = instantiate_node(SyntaxNode,input, i18...index, s18)
        r18.extend(Float2)
      else
        @index = i18
        r18 = nil
      end
      if r18
        r17 = r18
      else
        r17 = instantiate_node(SyntaxNode,input, index...index)
      end
      s1 << r17
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(Float3)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
    r0.extend(Float5)
  else
    i24, s24 = index, []
    s25, i25 = [], index
    loop do
      if has_terminal?('\G[0-9]', true, index)
        r26 = true
        @index += 1
      else
        r26 = nil
      end
      if r26
        s25 << r26
      else
        break
      end
    end
    if s25.empty?
      @index = i25
      r25 = nil
    else
      r25 = instantiate_node(SyntaxNode,input, i25...index, s25)
    end
    s24 << r25
    if r25
      if has_terminal?('\G[Ee]', true, index)
        r27 = true
        @index += 1
      else
        r27 = nil
      end
      s24 << r27
      if r27
        if has_terminal?('\G[+-]', true, index)
          r29 = true
          @index += 1
        else
          r29 = nil
        end
        if r29
          r28 = r29
        else
          r28 = instantiate_node(SyntaxNode,input, index...index)
        end
        s24 << r28
        if r28
          s30, i30 = [], index
          loop do
            if has_terminal?('\G[0-9]', true, index)
              r31 = true
              @index += 1
            else
              r31 = nil
            end
            if r31
              s30 << r31
            else
              break
            end
          end
          if s30.empty?
            @index = i30
            r30 = nil
          else
            r30 = instantiate_node(SyntaxNode,input, i30...index, s30)
          end
          s24 << r30
        end
      end
    end
    if s24.last
      r24 = instantiate_node(SyntaxNode,input, i24...index, s24)
      r24.extend(Float4)
    else
      @index = i24
      r24 = nil
    end
    if r24
      r0 = r24
      r0.extend(Float5)
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:float][start_index] = r0

  r0
end

#_nt_GetRaisesObject



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# File 'lib/webidl/parser/idl.rb', line 1442

def _nt_GetRaises
  start_index = index
  if node_cache[:GetRaises].has_key?(index)
    cached = node_cache[:GetRaises][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?("getraises", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 9))
    @index += 9
  else
    terminal_parse_failure("getraises")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_ExceptionList
      s1 << r4
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(GetRaises0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:GetRaises][start_index] = r0

  r0
end

#_nt_identifierObject



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# File 'lib/webidl/parser/idl.rb', line 5120

def _nt_identifier
  start_index = index
  if node_cache[:identifier].has_key?(index)
    cached = node_cache[:identifier][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?('\G[A-Z_a-z]', true, index)
    r1 = true
    @index += 1
  else
    r1 = nil
  end
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      if has_terminal?('\G[0-9A-Z_a-z]', true, index)
        r3 = true
        @index += 1
      else
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Identifier0)
    r0.extend(Identifier1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:identifier][start_index] = r0

  r0
end

#_nt_ImplementsStatementObject



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# File 'lib/webidl/parser/idl.rb', line 894

def _nt_ImplementsStatement
  start_index = index
  if node_cache[:ImplementsStatement].has_key?(index)
    cached = node_cache[:ImplementsStatement][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_ScopedName
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      if has_terminal?("implements", false, index)
        r3 = instantiate_node(SyntaxNode,input, index...(index + 10))
        @index += 10
      else
        terminal_parse_failure("implements")
        r3 = nil
      end
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          r5 = _nt_ScopedName
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              if has_terminal?(";", false, index)
                r7 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure(";")
                r7 = nil
              end
              s0 << r7
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ImplementsStatement,input, i0...index, s0)
    r0.extend(ImplementsStatement0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ImplementsStatement][start_index] = r0

  r0
end

#_nt_InObject



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# File 'lib/webidl/parser/idl.rb', line 2289

def _nt_In
  start_index = index
  if node_cache[:In].has_key?(index)
    cached = node_cache[:In][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("in", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure("in")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:In][start_index] = r0

  r0
end

#_nt_integerObject



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# File 'lib/webidl/parser/idl.rb', line 4619

def _nt_integer
  start_index = index
  if node_cache[:integer].has_key?(index)
    cached = node_cache[:integer][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  i1, s1 = index, []
  if has_terminal?("-", false, index)
    r3 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("-")
    r3 = nil
  end
  if r3
    r2 = r3
  else
    r2 = instantiate_node(SyntaxNode,input, index...index)
  end
  s1 << r2
  if r2
    if has_terminal?("0", false, index)
      r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("0")
      r4 = nil
    end
    s1 << r4
    if r4
      i5 = index
      s6, i6 = [], index
      loop do
        if has_terminal?('\G[0-7]', true, index)
          r7 = true
          @index += 1
        else
          r7 = nil
        end
        if r7
          s6 << r7
        else
          break
        end
      end
      r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
      if r6
        r5 = r6
      else
        i8, s8 = index, []
        if has_terminal?('\G[Xx]', true, index)
          r9 = true
          @index += 1
        else
          r9 = nil
        end
        s8 << r9
        if r9
          s10, i10 = [], index
          loop do
            if has_terminal?('\G[0-9A-Fa-f]', true, index)
              r11 = true
              @index += 1
            else
              r11 = nil
            end
            if r11
              s10 << r11
            else
              break
            end
          end
          if s10.empty?
            @index = i10
            r10 = nil
          else
            r10 = instantiate_node(SyntaxNode,input, i10...index, s10)
          end
          s8 << r10
        end
        if s8.last
          r8 = instantiate_node(SyntaxNode,input, i8...index, s8)
          r8.extend(Integer0)
        else
          @index = i8
          r8 = nil
        end
        if r8
          r5 = r8
        else
          @index = i5
          r5 = nil
        end
      end
      s1 << r5
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(Integer1)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
    r0.extend(Integer3)
  else
    i12, s12 = index, []
    if has_terminal?('\G[1-9]', true, index)
      r13 = true
      @index += 1
    else
      r13 = nil
    end
    s12 << r13
    if r13
      s14, i14 = [], index
      loop do
        if has_terminal?('\G[0-9]', true, index)
          r15 = true
          @index += 1
        else
          r15 = nil
        end
        if r15
          s14 << r15
        else
          break
        end
      end
      r14 = instantiate_node(SyntaxNode,input, i14...index, s14)
      s12 << r14
    end
    if s12.last
      r12 = instantiate_node(SyntaxNode,input, i12...index, s12)
      r12.extend(Integer2)
    else
      @index = i12
      r12 = nil
    end
    if r12
      r0 = r12
      r0.extend(Integer3)
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:integer][start_index] = r0

  r0
end

#_nt_IntegerTypeObject



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# File 'lib/webidl/parser/idl.rb', line 4072

def _nt_IntegerType
  start_index = index
  if node_cache[:IntegerType].has_key?(index)
    cached = node_cache[:IntegerType][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  if has_terminal?("short", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 5))
    @index += 5
  else
    terminal_parse_failure("short")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    i2, s2 = index, []
    if has_terminal?("long", false, index)
      r3 = instantiate_node(SyntaxNode,input, index...(index + 4))
      @index += 4
    else
      terminal_parse_failure("long")
      r3 = nil
    end
    s2 << r3
    if r3
      r4 = _nt_ws
      s2 << r4
      if r4
        r5 = _nt_OptionalLong
        s2 << r5
      end
    end
    if s2.last
      r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
      r2.extend(IntegerType0)
    else
      @index = i2
      r2 = nil
    end
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:IntegerType][start_index] = r0

  r0
end

#_nt_InterfaceObject



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# File 'lib/webidl/parser/idl.rb', line 322

def _nt_Interface
  start_index = index
  if node_cache[:Interface].has_key?(index)
    cached = node_cache[:Interface][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("interface", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 9))
    @index += 9
  else
    terminal_parse_failure("interface")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_identifier
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          r5 = _nt_InterfaceInheritance
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              if has_terminal?("{", false, index)
                r7 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure("{")
                r7 = nil
              end
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  r9 = _nt_InterfaceMembers
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      if has_terminal?("}", false, index)
                        r11 = instantiate_node(SyntaxNode,input, index...(index + 1))
                        @index += 1
                      else
                        terminal_parse_failure("}")
                        r11 = nil
                      end
                      s0 << r11
                      if r11
                        r12 = _nt_ws
                        s0 << r12
                        if r12
                          if has_terminal?(";", false, index)
                            r13 = instantiate_node(SyntaxNode,input, index...(index + 1))
                            @index += 1
                          else
                            terminal_parse_failure(";")
                            r13 = nil
                          end
                          s0 << r13
                        end
                      end
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Interface,input, i0...index, s0)
    r0.extend(Interface0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Interface][start_index] = r0

  r0
end

#_nt_InterfaceInheritanceObject



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# File 'lib/webidl/parser/idl.rb', line 431

def _nt_InterfaceInheritance
  start_index = index
  if node_cache[:InterfaceInheritance].has_key?(index)
    cached = node_cache[:InterfaceInheritance][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?(":", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure(":")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_ScopedNameList
      s1 << r4
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::InterfaceInheritance,input, i1...index, s1)
    r1.extend(InterfaceInheritance0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:InterfaceInheritance][start_index] = r0

  r0
end

#_nt_InterfaceMemberObject



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# File 'lib/webidl/parser/idl.rb', line 555

def _nt_InterfaceMember
  start_index = index
  if node_cache[:InterfaceMember].has_key?(index)
    cached = node_cache[:InterfaceMember][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_Const
  if r1
    r0 = r1
  else
    r2 = _nt_AttributeOrOperation
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:InterfaceMember][start_index] = r0

  r0
end

#_nt_InterfaceMembersObject



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# File 'lib/webidl/parser/idl.rb', line 503

def _nt_InterfaceMembers
  start_index = index
  if node_cache[:InterfaceMembers].has_key?(index)
    cached = node_cache[:InterfaceMembers][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  r2 = _nt_ExtendedAttributeList
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_InterfaceMember
      s1 << r4
      if r4
        r5 = _nt_ws
        s1 << r5
        if r5
          r6 = _nt_InterfaceMembers
          s1 << r6
          if r6
            r7 = _nt_ws
            s1 << r7
          end
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::InterfaceMembers,input, i1...index, s1)
    r1.extend(InterfaceMembers0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:InterfaceMembers][start_index] = r0

  r0
end

#_nt_line_commentObject



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# File 'lib/webidl/parser/idl.rb', line 5404

def _nt_line_comment
  start_index = index
  if node_cache[:line_comment].has_key?(index)
    cached = node_cache[:line_comment][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("//", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure("//")
    r1 = nil
  end
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      i3, s3 = index, []
      i4 = index
      if has_terminal?('\G[\\n\\r]', true, index)
        r5 = true
        @index += 1
      else
        r5 = nil
      end
      if r5
        r4 = nil
      else
        @index = i4
        r4 = instantiate_node(SyntaxNode,input, index...index)
      end
      s3 << r4
      if r4
        if index < input_length
          r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
          @index += 1
        else
          terminal_parse_failure("any character")
          r6 = nil
        end
        s3 << r6
      end
      if s3.last
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
        r3.extend(LineComment0)
      else
        @index = i3
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(LineComment1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:line_comment][start_index] = r0

  r0
end

#_nt_ModuleObject



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# File 'lib/webidl/parser/idl.rb', line 192

def _nt_Module
  start_index = index
  if node_cache[:Module].has_key?(index)
    cached = node_cache[:Module][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("module", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 6))
    @index += 6
  else
    terminal_parse_failure("module")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_identifier
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          if has_terminal?("{", false, index)
            r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
            @index += 1
          else
            terminal_parse_failure("{")
            r5 = nil
          end
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              r7 = _nt_Definitions
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  if has_terminal?("}", false, index)
                    r9 = instantiate_node(SyntaxNode,input, index...(index + 1))
                    @index += 1
                  else
                    terminal_parse_failure("}")
                    r9 = nil
                  end
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      if has_terminal?(";", false, index)
                        r11 = instantiate_node(SyntaxNode,input, index...(index + 1))
                        @index += 1
                      else
                        terminal_parse_failure(";")
                        r11 = nil
                      end
                      s0 << r11
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Module,input, i0...index, s0)
    r0.extend(Module0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Module][start_index] = r0

  r0
end

#_nt_NonSpaceObject



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# File 'lib/webidl/parser/idl.rb', line 4221

def _nt_NonSpace
  start_index = index
  if node_cache[:NonSpace].has_key?(index)
    cached = node_cache[:NonSpace][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  i1 = index
  if has_terminal?(' ', false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure(' ')
    r2 = nil
  end
  if r2
    r1 = nil
  else
    @index = i1
    r1 = instantiate_node(SyntaxNode,input, index...index)
  end
  s0 << r1
  if r1
    if index < input_length
      r3 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("any character")
      r3 = nil
    end
    s0 << r3
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(NonSpace0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:NonSpace][start_index] = r0

  r0
end

#_nt_NullableObject



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# File 'lib/webidl/parser/idl.rb', line 4160

def _nt_Nullable
  start_index = index
  if node_cache[:Nullable].has_key?(index)
    cached = node_cache[:Nullable][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("?", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("?")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:Nullable][start_index] = r0

  r0
end

#_nt_NullableTypeObject



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# File 'lib/webidl/parser/idl.rb', line 3715

def _nt_NullableType
  start_index = index
  if node_cache[:NullableType].has_key?(index)
    cached = node_cache[:NullableType][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  i1, s1 = index, []
  r2 = _nt_UnsignedIntegerType
  s1 << r2
  if r2
    r3 = _nt_Nullable
    s1 << r3
  end
  if s1.last
    r1 = instantiate_node(ParseTree::NullableType,input, i1...index, s1)
    r1.extend(NullableType0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    i4, s4 = index, []
    if has_terminal?("boolean", false, index)
      r5 = instantiate_node(SyntaxNode,input, index...(index + 7))
      @index += 7
    else
      terminal_parse_failure("boolean")
      r5 = nil
    end
    s4 << r5
    if r5
      r6 = _nt_Nullable
      s4 << r6
      if r6
        i7 = index
        r8 = _nt_NonSpace
        if r8
          r7 = nil
        else
          @index = i7
          r7 = instantiate_node(SyntaxNode,input, index...index)
        end
        s4 << r7
      end
    end
    if s4.last
      r4 = instantiate_node(ParseTree::NullableType,input, i4...index, s4)
      r4.extend(NullableType1)
    else
      @index = i4
      r4 = nil
    end
    if r4
      r0 = r4
    else
      i9, s9 = index, []
      if has_terminal?("octet", false, index)
        r10 = instantiate_node(SyntaxNode,input, index...(index + 5))
        @index += 5
      else
        terminal_parse_failure("octet")
        r10 = nil
      end
      s9 << r10
      if r10
        r11 = _nt_Nullable
        s9 << r11
        if r11
          i12 = index
          r13 = _nt_NonSpace
          if r13
            r12 = nil
          else
            @index = i12
            r12 = instantiate_node(SyntaxNode,input, index...index)
          end
          s9 << r12
        end
      end
      if s9.last
        r9 = instantiate_node(ParseTree::NullableType,input, i9...index, s9)
        r9.extend(NullableType2)
      else
        @index = i9
        r9 = nil
      end
      if r9
        r0 = r9
      else
        i14, s14 = index, []
        if has_terminal?("float", false, index)
          r15 = instantiate_node(SyntaxNode,input, index...(index + 5))
          @index += 5
        else
          terminal_parse_failure("float")
          r15 = nil
        end
        s14 << r15
        if r15
          r16 = _nt_Nullable
          s14 << r16
          if r16
            i17 = index
            r18 = _nt_NonSpace
            if r18
              r17 = nil
            else
              @index = i17
              r17 = instantiate_node(SyntaxNode,input, index...index)
            end
            s14 << r17
          end
        end
        if s14.last
          r14 = instantiate_node(ParseTree::NullableType,input, i14...index, s14)
          r14.extend(NullableType3)
        else
          @index = i14
          r14 = nil
        end
        if r14
          r0 = r14
        else
          i19, s19 = index, []
          if has_terminal?("double", false, index)
            r20 = instantiate_node(SyntaxNode,input, index...(index + 6))
            @index += 6
          else
            terminal_parse_failure("double")
            r20 = nil
          end
          s19 << r20
          if r20
            r21 = _nt_Nullable
            s19 << r21
            if r21
              i22 = index
              r23 = _nt_NonSpace
              if r23
                r22 = nil
              else
                @index = i22
                r22 = instantiate_node(SyntaxNode,input, index...index)
              end
              s19 << r22
            end
          end
          if s19.last
            r19 = instantiate_node(ParseTree::NullableType,input, i19...index, s19)
            r19.extend(NullableType4)
          else
            @index = i19
            r19 = nil
          end
          if r19
            r0 = r19
          else
            i24, s24 = index, []
            if has_terminal?("DOMString", false, index)
              r25 = instantiate_node(SyntaxNode,input, index...(index + 9))
              @index += 9
            else
              terminal_parse_failure("DOMString")
              r25 = nil
            end
            s24 << r25
            if r25
              r26 = _nt_Nullable
              s24 << r26
              if r26
                i27 = index
                r28 = _nt_NonSpace
                if r28
                  r27 = nil
                else
                  @index = i27
                  r27 = instantiate_node(SyntaxNode,input, index...index)
                end
                s24 << r27
              end
            end
            if s24.last
              r24 = instantiate_node(ParseTree::NullableType,input, i24...index, s24)
              r24.extend(NullableType5)
            else
              @index = i24
              r24 = nil
            end
            if r24
              r0 = r24
            else
              i29, s29 = index, []
              if has_terminal?("sequence", false, index)
                r30 = instantiate_node(SyntaxNode,input, index...(index + 8))
                @index += 8
              else
                terminal_parse_failure("sequence")
                r30 = nil
              end
              s29 << r30
              if r30
                r31 = _nt_ws
                s29 << r31
                if r31
                  if has_terminal?("<", false, index)
                    r32 = instantiate_node(SyntaxNode,input, index...(index + 1))
                    @index += 1
                  else
                    terminal_parse_failure("<")
                    r32 = nil
                  end
                  s29 << r32
                  if r32
                    r33 = _nt_ws
                    s29 << r33
                    if r33
                      r34 = _nt_Type
                      s29 << r34
                      if r34
                        r35 = _nt_ws
                        s29 << r35
                        if r35
                          if has_terminal?(">", false, index)
                            r36 = instantiate_node(SyntaxNode,input, index...(index + 1))
                            @index += 1
                          else
                            terminal_parse_failure(">")
                            r36 = nil
                          end
                          s29 << r36
                          if r36
                            r37 = _nt_Nullable
                            s29 << r37
                            if r37
                              i38 = index
                              r39 = _nt_NonSpace
                              if r39
                                r38 = nil
                              else
                                @index = i38
                                r38 = instantiate_node(SyntaxNode,input, index...index)
                              end
                              s29 << r38
                            end
                          end
                        end
                      end
                    end
                  end
                end
              end
              if s29.last
                r29 = instantiate_node(ParseTree::NullableType,input, i29...index, s29)
                r29.extend(NullableType6)
              else
                @index = i29
                r29 = nil
              end
              if r29
                r0 = r29
              else
                @index = i0
                r0 = nil
              end
            end
          end
        end
      end
    end
  end

  node_cache[:NullableType][start_index] = r0

  r0
end

#_nt_OmittableSpecialsObject



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# File 'lib/webidl/parser/idl.rb', line 1619

def _nt_OmittableSpecials
  start_index = index
  if node_cache[:OmittableSpecials].has_key?(index)
    cached = node_cache[:OmittableSpecials][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("omittable", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 9))
    @index += 9
  else
    terminal_parse_failure("omittable")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_Specials
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::OmittableSpecials,input, i0...index, s0)
    r0.extend(OmittableSpecials0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:OmittableSpecials][start_index] = r0

  r0
end

#_nt_OperationObject



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# File 'lib/webidl/parser/idl.rb', line 1558

def _nt_Operation
  start_index = index
  if node_cache[:Operation].has_key?(index)
    cached = node_cache[:Operation][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  i1 = index
  r2 = _nt_OmittableSpecials
  if r2
    r1 = r2
  else
    r3 = _nt_Specials
    if r3
      r1 = r3
    else
      @index = i1
      r1 = nil
    end
  end
  s0 << r1
  if r1
    r4 = _nt_ws
    s0 << r4
    if r4
      r5 = _nt_OperationRest
      s0 << r5
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Operation,input, i0...index, s0)
    r0.extend(Operation0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Operation][start_index] = r0

  r0
end

#_nt_OperationRestObject



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# File 'lib/webidl/parser/idl.rb', line 1832

def _nt_OperationRest
  start_index = index
  if node_cache[:OperationRest].has_key?(index)
    cached = node_cache[:OperationRest][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_ReturnType
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_OptionalIdentifier
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          if has_terminal?("(", false, index)
            r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
            @index += 1
          else
            terminal_parse_failure("(")
            r5 = nil
          end
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              r7 = _nt_ArgumentList
              s0 << r7
              if r7
                r8 = _nt_ws
                s0 << r8
                if r8
                  if has_terminal?(")", false, index)
                    r9 = instantiate_node(SyntaxNode,input, index...(index + 1))
                    @index += 1
                  else
                    terminal_parse_failure(")")
                    r9 = nil
                  end
                  s0 << r9
                  if r9
                    r10 = _nt_ws
                    s0 << r10
                    if r10
                      r11 = _nt_Raises
                      s0 << r11
                      if r11
                        r12 = _nt_ws
                        s0 << r12
                        if r12
                          if has_terminal?(";", false, index)
                            r13 = instantiate_node(SyntaxNode,input, index...(index + 1))
                            @index += 1
                          else
                            terminal_parse_failure(";")
                            r13 = nil
                          end
                          s0 << r13
                        end
                      end
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Operation,input, i0...index, s0)
    r0.extend(OperationRest0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:OperationRest][start_index] = r0

  r0
end

#_nt_OptionalObject



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# File 'lib/webidl/parser/idl.rb', line 2318

def _nt_Optional
  start_index = index
  if node_cache[:Optional].has_key?(index)
    cached = node_cache[:Optional][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("optional", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 8))
    @index += 8
  else
    terminal_parse_failure("optional")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:Optional][start_index] = r0

  r0
end

#_nt_OptionalArrayObject



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# File 'lib/webidl/parser/idl.rb', line 4189

def _nt_OptionalArray
  start_index = index
  if node_cache[:OptionalArray].has_key?(index)
    cached = node_cache[:OptionalArray][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("[]", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure("[]")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:OptionalArray][start_index] = r0

  r0
end

#_nt_OptionalIdentifierObject



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# File 'lib/webidl/parser/idl.rb', line 1925

def _nt_OptionalIdentifier
  start_index = index
  if node_cache[:OptionalIdentifier].has_key?(index)
    cached = node_cache[:OptionalIdentifier][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  r1 = _nt_identifier
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:OptionalIdentifier][start_index] = r0

  r0
end

#_nt_OptionalLongObject



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# File 'lib/webidl/parser/idl.rb', line 4131

def _nt_OptionalLong
  start_index = index
  if node_cache[:OptionalLong].has_key?(index)
    cached = node_cache[:OptionalLong][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("long", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 4))
    @index += 4
  else
    terminal_parse_failure("long")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:OptionalLong][start_index] = r0

  r0
end

#_nt_otherObject



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# File 'lib/webidl/parser/idl.rb', line 5375

def _nt_other
  start_index = index
  if node_cache[:other].has_key?(index)
    cached = node_cache[:other][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?('\G[^\\t\\n\\r 0-9A-Z_a-z]', true, index)
    r0 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    r0 = nil
  end

  node_cache[:other][start_index] = r0

  r0
end

#_nt_OtherObject



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# File 'lib/webidl/parser/idl.rb', line 3016

def _nt_Other
  start_index = index
  if node_cache[:Other].has_key?(index)
    cached = node_cache[:Other][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_integer
  if r1
    r0 = r1
  else
    r2 = _nt_float
    if r2
      r0 = r2
    else
      r3 = _nt_identifier
      if r3
        r0 = r3
      else
        r4 = _nt_string
        if r4
          r0 = r4
        else
          r5 = _nt_other
          if r5
            r0 = r5
          else
            if has_terminal?("...", false, index)
              r6 = instantiate_node(SyntaxNode,input, index...(index + 3))
              @index += 3
            else
              terminal_parse_failure("...")
              r6 = nil
            end
            if r6
              r0 = r6
            else
              if has_terminal?(":", false, index)
                r7 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure(":")
                r7 = nil
              end
              if r7
                r0 = r7
              else
                if has_terminal?("::", false, index)
                  r8 = instantiate_node(SyntaxNode,input, index...(index + 2))
                  @index += 2
                else
                  terminal_parse_failure("::")
                  r8 = nil
                end
                if r8
                  r0 = r8
                else
                  if has_terminal?(";", false, index)
                    r9 = instantiate_node(SyntaxNode,input, index...(index + 1))
                    @index += 1
                  else
                    terminal_parse_failure(";")
                    r9 = nil
                  end
                  if r9
                    r0 = r9
                  else
                    if has_terminal?("<", false, index)
                      r10 = instantiate_node(SyntaxNode,input, index...(index + 1))
                      @index += 1
                    else
                      terminal_parse_failure("<")
                      r10 = nil
                    end
                    if r10
                      r0 = r10
                    else
                      if has_terminal?("=", false, index)
                        r11 = instantiate_node(SyntaxNode,input, index...(index + 1))
                        @index += 1
                      else
                        terminal_parse_failure("=")
                        r11 = nil
                      end
                      if r11
                        r0 = r11
                      else
                        if has_terminal?(">", false, index)
                          r12 = instantiate_node(SyntaxNode,input, index...(index + 1))
                          @index += 1
                        else
                          terminal_parse_failure(">")
                          r12 = nil
                        end
                        if r12
                          r0 = r12
                        else
                          if has_terminal?("?", false, index)
                            r13 = instantiate_node(SyntaxNode,input, index...(index + 1))
                            @index += 1
                          else
                            terminal_parse_failure("?")
                            r13 = nil
                          end
                          if r13
                            r0 = r13
                          else
                            if has_terminal?("false", false, index)
                              r14 = instantiate_node(SyntaxNode,input, index...(index + 5))
                              @index += 5
                            else
                              terminal_parse_failure("false")
                              r14 = nil
                            end
                            if r14
                              r0 = r14
                            else
                              if has_terminal?("object", false, index)
                                r15 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                @index += 6
                              else
                                terminal_parse_failure("object")
                                r15 = nil
                              end
                              if r15
                                r0 = r15
                              else
                                if has_terminal?("true", false, index)
                                  r16 = instantiate_node(SyntaxNode,input, index...(index + 4))
                                  @index += 4
                                else
                                  terminal_parse_failure("true")
                                  r16 = nil
                                end
                                if r16
                                  r0 = r16
                                else
                                  if has_terminal?("any", false, index)
                                    r17 = instantiate_node(SyntaxNode,input, index...(index + 3))
                                    @index += 3
                                  else
                                    terminal_parse_failure("any")
                                    r17 = nil
                                  end
                                  if r17
                                    r0 = r17
                                  else
                                    if has_terminal?("attribute", false, index)
                                      r18 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                      @index += 9
                                    else
                                      terminal_parse_failure("attribute")
                                      r18 = nil
                                    end
                                    if r18
                                      r0 = r18
                                    else
                                      if has_terminal?("boolean", false, index)
                                        r19 = instantiate_node(SyntaxNode,input, index...(index + 7))
                                        @index += 7
                                      else
                                        terminal_parse_failure("boolean")
                                        r19 = nil
                                      end
                                      if r19
                                        r0 = r19
                                      else
                                        if has_terminal?("caller", false, index)
                                          r20 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                          @index += 6
                                        else
                                          terminal_parse_failure("caller")
                                          r20 = nil
                                        end
                                        if r20
                                          r0 = r20
                                        else
                                          if has_terminal?("const", false, index)
                                            r21 = instantiate_node(SyntaxNode,input, index...(index + 5))
                                            @index += 5
                                          else
                                            terminal_parse_failure("const")
                                            r21 = nil
                                          end
                                          if r21
                                            r0 = r21
                                          else
                                            if has_terminal?("creator", false, index)
                                              r22 = instantiate_node(SyntaxNode,input, index...(index + 7))
                                              @index += 7
                                            else
                                              terminal_parse_failure("creator")
                                              r22 = nil
                                            end
                                            if r22
                                              r0 = r22
                                            else
                                              if has_terminal?("deleter", false, index)
                                                r23 = instantiate_node(SyntaxNode,input, index...(index + 7))
                                                @index += 7
                                              else
                                                terminal_parse_failure("deleter")
                                                r23 = nil
                                              end
                                              if r23
                                                r0 = r23
                                              else
                                                if has_terminal?("double", false, index)
                                                  r24 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                                  @index += 6
                                                else
                                                  terminal_parse_failure("double")
                                                  r24 = nil
                                                end
                                                if r24
                                                  r0 = r24
                                                else
                                                  if has_terminal?("exception", false, index)
                                                    r25 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                                    @index += 9
                                                  else
                                                    terminal_parse_failure("exception")
                                                    r25 = nil
                                                  end
                                                  if r25
                                                    r0 = r25
                                                  else
                                                    if has_terminal?("float", false, index)
                                                      r26 = instantiate_node(SyntaxNode,input, index...(index + 5))
                                                      @index += 5
                                                    else
                                                      terminal_parse_failure("float")
                                                      r26 = nil
                                                    end
                                                    if r26
                                                      r0 = r26
                                                    else
                                                      if has_terminal?("getraises", false, index)
                                                        r27 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                                        @index += 9
                                                      else
                                                        terminal_parse_failure("getraises")
                                                        r27 = nil
                                                      end
                                                      if r27
                                                        r0 = r27
                                                      else
                                                        if has_terminal?("getter", false, index)
                                                          r28 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                                          @index += 6
                                                        else
                                                          terminal_parse_failure("getter")
                                                          r28 = nil
                                                        end
                                                        if r28
                                                          r0 = r28
                                                        else
                                                          if has_terminal?("implements", false, index)
                                                            r29 = instantiate_node(SyntaxNode,input, index...(index + 10))
                                                            @index += 10
                                                          else
                                                            terminal_parse_failure("implements")
                                                            r29 = nil
                                                          end
                                                          if r29
                                                            r0 = r29
                                                          else
                                                            if has_terminal?("in", false, index)
                                                              r30 = instantiate_node(SyntaxNode,input, index...(index + 2))
                                                              @index += 2
                                                            else
                                                              terminal_parse_failure("in")
                                                              r30 = nil
                                                            end
                                                            if r30
                                                              r0 = r30
                                                            else
                                                              if has_terminal?("interface", false, index)
                                                                r31 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                                                @index += 9
                                                              else
                                                                terminal_parse_failure("interface")
                                                                r31 = nil
                                                              end
                                                              if r31
                                                                r0 = r31
                                                              else
                                                                if has_terminal?("long", false, index)
                                                                  r32 = instantiate_node(SyntaxNode,input, index...(index + 4))
                                                                  @index += 4
                                                                else
                                                                  terminal_parse_failure("long")
                                                                  r32 = nil
                                                                end
                                                                if r32
                                                                  r0 = r32
                                                                else
                                                                  if has_terminal?("module", false, index)
                                                                    r33 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                                                    @index += 6
                                                                  else
                                                                    terminal_parse_failure("module")
                                                                    r33 = nil
                                                                  end
                                                                  if r33
                                                                    r0 = r33
                                                                  else
                                                                    if has_terminal?("octet", false, index)
                                                                      r34 = instantiate_node(SyntaxNode,input, index...(index + 5))
                                                                      @index += 5
                                                                    else
                                                                      terminal_parse_failure("octet")
                                                                      r34 = nil
                                                                    end
                                                                    if r34
                                                                      r0 = r34
                                                                    else
                                                                      if has_terminal?("omittable", false, index)
                                                                        r35 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                                                        @index += 9
                                                                      else
                                                                        terminal_parse_failure("omittable")
                                                                        r35 = nil
                                                                      end
                                                                      if r35
                                                                        r0 = r35
                                                                      else
                                                                        if has_terminal?("optional", false, index)
                                                                          r36 = instantiate_node(SyntaxNode,input, index...(index + 8))
                                                                          @index += 8
                                                                        else
                                                                          terminal_parse_failure("optional")
                                                                          r36 = nil
                                                                        end
                                                                        if r36
                                                                          r0 = r36
                                                                        else
                                                                          if has_terminal?("raises", false, index)
                                                                            r37 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                                                            @index += 6
                                                                          else
                                                                            terminal_parse_failure("raises")
                                                                            r37 = nil
                                                                          end
                                                                          if r37
                                                                            r0 = r37
                                                                          else
                                                                            if has_terminal?("sequence", false, index)
                                                                              r38 = instantiate_node(SyntaxNode,input, index...(index + 8))
                                                                              @index += 8
                                                                            else
                                                                              terminal_parse_failure("sequence")
                                                                              r38 = nil
                                                                            end
                                                                            if r38
                                                                              r0 = r38
                                                                            else
                                                                              if has_terminal?("setraises", false, index)
                                                                                r39 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                                                                @index += 9
                                                                              else
                                                                                terminal_parse_failure("setraises")
                                                                                r39 = nil
                                                                              end
                                                                              if r39
                                                                                r0 = r39
                                                                              else
                                                                                if has_terminal?("setter", false, index)
                                                                                  r40 = instantiate_node(SyntaxNode,input, index...(index + 6))
                                                                                  @index += 6
                                                                                else
                                                                                  terminal_parse_failure("setter")
                                                                                  r40 = nil
                                                                                end
                                                                                if r40
                                                                                  r0 = r40
                                                                                else
                                                                                  if has_terminal?("short", false, index)
                                                                                    r41 = instantiate_node(SyntaxNode,input, index...(index + 5))
                                                                                    @index += 5
                                                                                  else
                                                                                    terminal_parse_failure("short")
                                                                                    r41 = nil
                                                                                  end
                                                                                  if r41
                                                                                    r0 = r41
                                                                                  else
                                                                                    if has_terminal?("DOMString", false, index)
                                                                                      r42 = instantiate_node(SyntaxNode,input, index...(index + 9))
                                                                                      @index += 9
                                                                                    else
                                                                                      terminal_parse_failure("DOMString")
                                                                                      r42 = nil
                                                                                    end
                                                                                    if r42
                                                                                      r0 = r42
                                                                                    else
                                                                                      if has_terminal?("stringifier", false, index)
                                                                                        r43 = instantiate_node(SyntaxNode,input, index...(index + 11))
                                                                                        @index += 11
                                                                                      else
                                                                                        terminal_parse_failure("stringifier")
                                                                                        r43 = nil
                                                                                      end
                                                                                      if r43
                                                                                        r0 = r43
                                                                                      else
                                                                                        if has_terminal?("typedef", false, index)
                                                                                          r44 = instantiate_node(SyntaxNode,input, index...(index + 7))
                                                                                          @index += 7
                                                                                        else
                                                                                          terminal_parse_failure("typedef")
                                                                                          r44 = nil
                                                                                        end
                                                                                        if r44
                                                                                          r0 = r44
                                                                                        else
                                                                                          if has_terminal?("unsigned", false, index)
                                                                                            r45 = instantiate_node(SyntaxNode,input, index...(index + 8))
                                                                                            @index += 8
                                                                                          else
                                                                                            terminal_parse_failure("unsigned")
                                                                                            r45 = nil
                                                                                          end
                                                                                          if r45
                                                                                            r0 = r45
                                                                                          else
                                                                                            if has_terminal?("void", false, index)
                                                                                              r46 = instantiate_node(SyntaxNode,input, index...(index + 4))
                                                                                              @index += 4
                                                                                            else
                                                                                              terminal_parse_failure("void")
                                                                                              r46 = nil
                                                                                            end
                                                                                            if r46
                                                                                              r0 = r46
                                                                                            else
                                                                                              @index = i0
                                                                                              r0 = nil
                                                                                            end
                                                                                          end
                                                                                        end
                                                                                      end
                                                                                    end
                                                                                  end
                                                                                end
                                                                              end
                                                                            end
                                                                          end
                                                                        end
                                                                      end
                                                                    end
                                                                  end
                                                                end
                                                              end
                                                            end
                                                          end
                                                        end
                                                      end
                                                    end
                                                  end
                                                end
                                              end
                                            end
                                          end
                                        end
                                      end
                                    end
                                  end
                                end
                              end
                            end
                          end
                        end
                      end
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end

  node_cache[:Other][start_index] = r0

  r0
end

#_nt_OtherOrCommaObject



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# File 'lib/webidl/parser/idl.rb', line 3512

def _nt_OtherOrComma
  start_index = index
  if node_cache[:OtherOrComma].has_key?(index)
    cached = node_cache[:OtherOrComma][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_Other
  if r1
    r0 = r1
  else
    if has_terminal?(",", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure(",")
      r2 = nil
    end
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:OtherOrComma][start_index] = r0

  r0
end

#_nt_RaisesObject



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# File 'lib/webidl/parser/idl.rb', line 1954

def _nt_Raises
  start_index = index
  if node_cache[:Raises].has_key?(index)
    cached = node_cache[:Raises][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?("raises", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 6))
    @index += 6
  else
    terminal_parse_failure("raises")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ExceptionList
    s1 << r3
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(Raises0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:Raises][start_index] = r0

  r0
end

#_nt_ReadOnlyObject



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# File 'lib/webidl/parser/idl.rb', line 1403

def _nt_ReadOnly
  start_index = index
  if node_cache[:ReadOnly].has_key?(index)
    cached = node_cache[:ReadOnly][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if has_terminal?("readonly", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 8))
    @index += 8
  else
    terminal_parse_failure("readonly")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ReadOnly][start_index] = r0

  r0
end

#_nt_RelativeScopedNameObject



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# File 'lib/webidl/parser/idl.rb', line 4511

def _nt_RelativeScopedName
  start_index = index
  if node_cache[:RelativeScopedName].has_key?(index)
    cached = node_cache[:RelativeScopedName][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_identifier
  s0 << r1
  if r1
    r2 = _nt_ScopedNameParts
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(ParseTree::RelativeScopedName,input, i0...index, s0)
    r0.extend(RelativeScopedName0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:RelativeScopedName][start_index] = r0

  r0
end

#_nt_ReturnTypeObject



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# File 'lib/webidl/parser/idl.rb', line 4271

def _nt_ReturnType
  start_index = index
  if node_cache[:ReturnType].has_key?(index)
    cached = node_cache[:ReturnType][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_Type
  if r1
    r0 = r1
  else
    if has_terminal?("void", false, index)
      r2 = instantiate_node(ParseTree::VoidType,input, index...(index + 4))
      @index += 4
    else
      terminal_parse_failure("void")
      r2 = nil
    end
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:ReturnType][start_index] = r0

  r0
end

#_nt_ScopedNameObject



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# File 'lib/webidl/parser/idl.rb', line 4420

def _nt_ScopedName
  start_index = index
  if node_cache[:ScopedName].has_key?(index)
    cached = node_cache[:ScopedName][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_AbsoluteScopedName
  if r1
    r0 = r1
  else
    r2 = _nt_RelativeScopedName
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:ScopedName][start_index] = r0

  r0
end

#_nt_ScopedNameListObject



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# File 'lib/webidl/parser/idl.rb', line 4321

def _nt_ScopedNameList
  start_index = index
  if node_cache[:ScopedNameList].has_key?(index)
    cached = node_cache[:ScopedNameList][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_ScopedName
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_ScopedNames
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::ScopedNameList,input, i0...index, s0)
    r0.extend(ScopedNameList0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:ScopedNameList][start_index] = r0

  r0
end

#_nt_ScopedNamePartsObject



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# File 'lib/webidl/parser/idl.rb', line 4556

def _nt_ScopedNameParts
  start_index = index
  if node_cache[:ScopedNameParts].has_key?(index)
    cached = node_cache[:ScopedNameParts][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?("::", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 2))
    @index += 2
  else
    terminal_parse_failure("::")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_identifier
      s1 << r4
      if r4
        r5 = _nt_ScopedNameParts
        s1 << r5
      end
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(ScopedNameParts0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ScopedNameParts][start_index] = r0

  r0
end

#_nt_ScopedNamesObject



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# File 'lib/webidl/parser/idl.rb', line 4370

def _nt_ScopedNames
  start_index = index
  if node_cache[:ScopedNames].has_key?(index)
    cached = node_cache[:ScopedNames][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?(",", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure(",")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ScopedName
    s1 << r3
    if r3
      r4 = _nt_ws
      s1 << r4
      if r4
        r5 = _nt_ScopedNames
        s1 << r5
      end
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(ScopedNames0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ScopedNames][start_index] = r0

  r0
end

#_nt_SetRaisesObject



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# File 'lib/webidl/parser/idl.rb', line 1498

def _nt_SetRaises
  start_index = index
  if node_cache[:SetRaises].has_key?(index)
    cached = node_cache[:SetRaises][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  if has_terminal?("setraises", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 9))
    @index += 9
  else
    terminal_parse_failure("setraises")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_ExceptionList
      s1 << r4
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(SetRaises0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:SetRaises][start_index] = r0

  r0
end

#_nt_SpecialObject



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# File 'lib/webidl/parser/idl.rb', line 1714

def _nt_Special
  start_index = index
  if node_cache[:Special].has_key?(index)
    cached = node_cache[:Special][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  if has_terminal?("getter", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 6))
    @index += 6
  else
    terminal_parse_failure("getter")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    if has_terminal?("setter", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 6))
      @index += 6
    else
      terminal_parse_failure("setter")
      r2 = nil
    end
    if r2
      r0 = r2
    else
      if has_terminal?("creator", false, index)
        r3 = instantiate_node(SyntaxNode,input, index...(index + 7))
        @index += 7
      else
        terminal_parse_failure("creator")
        r3 = nil
      end
      if r3
        r0 = r3
      else
        if has_terminal?("deleter", false, index)
          r4 = instantiate_node(SyntaxNode,input, index...(index + 7))
          @index += 7
        else
          terminal_parse_failure("deleter")
          r4 = nil
        end
        if r4
          r0 = r4
        else
          if has_terminal?("caller", false, index)
            r5 = instantiate_node(SyntaxNode,input, index...(index + 6))
            @index += 6
          else
            terminal_parse_failure("caller")
            r5 = nil
          end
          if r5
            r0 = r5
          else
            @index = i0
            r0 = nil
          end
        end
      end
    end
  end

  node_cache[:Special][start_index] = r0

  r0
end

#_nt_SpecialsObject



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# File 'lib/webidl/parser/idl.rb', line 1674

def _nt_Specials
  start_index = index
  if node_cache[:Specials].has_key?(index)
    cached = node_cache[:Specials][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1, s1 = index, []
  r2 = _nt_Special
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_Specials
      s1 << r4
    end
  end
  if s1.last
    r1 = instantiate_node(ParseTree::Specials,input, i1...index, s1)
    r1.extend(Specials0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:Specials][start_index] = r0

  r0
end

#_nt_stringObject



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# File 'lib/webidl/parser/idl.rb', line 5174

def _nt_string
  start_index = index
  if node_cache[:string].has_key?(index)
    cached = node_cache[:string][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("\"", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure("\"")
    r1 = nil
  end
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      if has_terminal?('\G[^"]', true, index)
        r3 = true
        @index += 1
      else
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
    if r2
      if has_terminal?("\"", false, index)
        r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        terminal_parse_failure("\"")
        r4 = nil
      end
      s0 << r4
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(String0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:string][start_index] = r0

  r0
end

#_nt_StringifierAttributeOrOperationObject



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# File 'lib/webidl/parser/idl.rb', line 1205

def _nt_StringifierAttributeOrOperation
  start_index = index
  if node_cache[:StringifierAttributeOrOperation].has_key?(index)
    cached = node_cache[:StringifierAttributeOrOperation][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("stringifier", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 11))
    @index += 11
  else
    terminal_parse_failure("stringifier")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      i3 = index
      r4 = _nt_Attribute
      if r4
        r3 = r4
      else
        r5 = _nt_OperationRest
        if r5
          r3 = r5
        else
          if has_terminal?(";", false, index)
            r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
            @index += 1
          else
            terminal_parse_failure(";")
            r6 = nil
          end
          if r6
            r3 = r6
          else
            @index = i3
            r3 = nil
          end
        end
      end
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::StringifierAttributeOrOperation,input, i0...index, s0)
    r0.extend(StringifierAttributeOrOperation0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:StringifierAttributeOrOperation][start_index] = r0

  r0
end

#_nt_TypeObject



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# File 'lib/webidl/parser/idl.rb', line 3558

def _nt_Type
  start_index = index
  if node_cache[:Type].has_key?(index)
    cached = node_cache[:Type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  i1 = index
  r2 = _nt_NullableType
  if r2
    r1 = r2
  else
    r3 = _nt_ScopedName
    if r3
      r1 = r3
    else
      if has_terminal?("any", false, index)
        r4 = instantiate_node(SyntaxNode,input, index...(index + 3))
        @index += 3
      else
        terminal_parse_failure("any")
        r4 = nil
      end
      if r4
        r1 = r4
      else
        if has_terminal?("object", false, index)
          r5 = instantiate_node(SyntaxNode,input, index...(index + 6))
          @index += 6
        else
          terminal_parse_failure("object")
          r5 = nil
        end
        if r5
          r1 = r5
        else
          @index = i1
          r1 = nil
        end
      end
    end
  end
  s0 << r1
  if r1
    r6 = _nt_OptionalArray
    s0 << r6
  end
  if s0.last
    r0 = instantiate_node(ParseTree::Type,input, i0...index, s0)
    r0.extend(Type0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:Type][start_index] = r0

  r0
end

#_nt_TypeDefObject



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# File 'lib/webidl/parser/idl.rb', line 808

def _nt_TypeDef
  start_index = index
  if node_cache[:TypeDef].has_key?(index)
    cached = node_cache[:TypeDef][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if has_terminal?("typedef", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 7))
    @index += 7
  else
    terminal_parse_failure("typedef")
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_ws
    s0 << r2
    if r2
      r3 = _nt_Type
      s0 << r3
      if r3
        r4 = _nt_ws
        s0 << r4
        if r4
          r5 = _nt_identifier
          s0 << r5
          if r5
            r6 = _nt_ws
            s0 << r6
            if r6
              if has_terminal?(";", false, index)
                r7 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure(";")
                r7 = nil
              end
              s0 << r7
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(ParseTree::TypeDef,input, i0...index, s0)
    r0.extend(TypeDef0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:TypeDef][start_index] = r0

  r0
end

#_nt_UnsignedIntegerTypeObject



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# File 'lib/webidl/parser/idl.rb', line 4009

def _nt_UnsignedIntegerType
  start_index = index
  if node_cache[:UnsignedIntegerType].has_key?(index)
    cached = node_cache[:UnsignedIntegerType][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  i1, s1 = index, []
  if has_terminal?("unsigned", false, index)
    r2 = instantiate_node(SyntaxNode,input, index...(index + 8))
    @index += 8
  else
    terminal_parse_failure("unsigned")
    r2 = nil
  end
  s1 << r2
  if r2
    r3 = _nt_ws
    s1 << r3
    if r3
      r4 = _nt_IntegerType
      s1 << r4
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(UnsignedIntegerType0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r5 = _nt_IntegerType
    if r5
      r0 = r5
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:UnsignedIntegerType][start_index] = r0

  r0
end

#_nt_wsObject



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# File 'lib/webidl/parser/idl.rb', line 5241

def _nt_ws
  start_index = index
  if node_cache[:ws].has_key?(index)
    cached = node_cache[:ws][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i1 = index
  i2, s2 = index, []
  s3, i3 = [], index
  loop do
    if has_terminal?('\G[\\t\\n\\r ]', true, index)
      r4 = true
      @index += 1
    else
      r4 = nil
    end
    if r4
      s3 << r4
    else
      break
    end
  end
  r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
  s2 << r3
  if r3
    s5, i5 = [], index
    loop do
      i6, s6 = index, []
      i7 = index
      r8 = _nt_line_comment
      if r8
        r7 = r8
      else
        r9 = _nt_block_comment
        if r9
          r7 = r9
        else
          @index = i7
          r7 = nil
        end
      end
      s6 << r7
      if r7
        s10, i10 = [], index
        loop do
          if has_terminal?('\G[\\t\\n\\r ]', true, index)
            r11 = true
            @index += 1
          else
            r11 = nil
          end
          if r11
            s10 << r11
          else
            break
          end
        end
        r10 = instantiate_node(SyntaxNode,input, i10...index, s10)
        s6 << r10
      end
      if s6.last
        r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
        r6.extend(Ws0)
      else
        @index = i6
        r6 = nil
      end
      if r6
        s5 << r6
      else
        break
      end
    end
    if s5.empty?
      @index = i5
      r5 = nil
    else
      r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
    end
    s2 << r5
  end
  if s2.last
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    r2.extend(Ws1)
  else
    @index = i2
    r2 = nil
  end
  if r2
    r1 = r2
  else
    s12, i12 = [], index
    loop do
      if has_terminal?('\G[\\t\\n\\r ]', true, index)
        r13 = true
        @index += 1
      else
        r13 = nil
      end
      if r13
        s12 << r13
      else
        break
      end
    end
    if s12.empty?
      @index = i12
      r12 = nil
    else
      r12 = instantiate_node(SyntaxNode,input, i12...index, s12)
    end
    if r12
      r1 = r12
    else
      @index = i1
      r1 = nil
    end
  end
  if r1
    r0 = r1
  else
    r0 = instantiate_node(SyntaxNode,input, index...index)
  end

  node_cache[:ws][start_index] = r0

  r0
end

#rootObject



11
12
13
# File 'lib/webidl/parser/idl.rb', line 11

def root
  @root ||= :Definitions
end