Class: MrbParser::Section

Inherits:
Object
  • Object
show all
Defined in:
lib/mrb_parser/section.rb

Direct Known Subclasses

DebugSection, EndSection, IrepSection, LinenoSection

Constant Summary collapse

BINARY_EOF = 
"END\0"
IREP_IDENTIFIER = 
"IREP"
LINENO_IDENTIFIER = 
"LINE"
DEBUG_IDENTIFIER = 
"DBG\0"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(signature = nil, size = nil) ⇒ Section

Returns a new instance of Section.



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# File 'lib/mrb_parser/section.rb', line 16

def initialize(signature = nil, size = nil)
  @signature = signature
  @size = size
end

Instance Attribute Details

#signature ⇒ Object (readonly)

Returns the value of attribute signature.



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# File 'lib/mrb_parser/section.rb', line 14

def signature
  @signature
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/mrb_parser/section.rb', line 14

def size
  @size
end

Class Method Details

.parse(parser) ⇒ Object 



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# File 'lib/mrb_parser/section.rb', line 21

def self.parse(parser)
  section = MrbParser::Section.new
  section.parse(parser)
end

Instance Method Details

#end? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mrb_parser/section.rb', line 46

def end?
  false
end

#parse(parser) ⇒ Object 



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# File 'lib/mrb_parser/section.rb', line 26

def parse(parser)
  signature = parser.read_chars(4)
  size = parser.read_uint32
  case signature
  when IREP_IDENTIFIER
    section = MrbParser::IrepSection
  when LINENO_IDENTIFIER
    section = MrbParser::LinenoSection
  when DEBUG_IDENTIFIER
    section = MrbParser::DebugSection
  when BINARY_EOF
    section = MrbParser::EndSection
  else
    raise MrbParser::Error, "cannot parse; invalid section signature: '#{signature}'"
  end
  sec = section.new(signature, size)
  sec.parse_body(parser)
  sec
end