Class: Antlr4ruby::CharStreams

Inherits:
Object
  • Object
show all
Defined in:
lib/antlr4ruby/char_streams.rb

Class Method Summary collapse

Class Method Details

.from_file(file) ⇒ Object 



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# File 'lib/antlr4ruby/char_streams.rb', line 16

def from_file(file)
  input = file.read
  if input
    from_string(input)
  else
    raise "文件读取异常"
  end
end

.from_file_name(filename, charset) ⇒ Object 



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# File 'lib/antlr4ruby/char_streams.rb', line 9

def from_file_name(filename, charset)
  mode = charset ? "rb:#{charset}" : 'r'
  File.open(filename, mode) do |file|
    from_file(file)
  end
end

.from_path(path, charset) ⇒ Object 



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# File 'lib/antlr4ruby/char_streams.rb', line 5

def from_path(path, charset)
  # from_file(path, charset)

end

.from_string(input, source_name = IntStream.UNKNOWN_SOURCE_NAME) ⇒ Object 



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# File 'lib/antlr4ruby/char_streams.rb', line 25

def from_string(input, source_name = IntStream.UNKNOWN_SOURCE_NAME)
  # 首先将字符串转换为整数数组

  CodePointCharStream.from_string(input, source_name)
end