Class: FFI_Yajl::Parser

Inherits:
Object show all
Includes:
Ext::Parser, FFI::Parser
Defined in:
lib/ffi_yajl/ext.rb,
lib/ffi_yajl/ffi.rb,
lib/ffi_yajl/parser.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FFI::Parser

#do_yajl_parse, #key_pop, #key_push, #set_value, #setup_callbacks, #stack_pop

Methods included from Ext::Parser

#do_yajl_parse

Constructor Details

#initialize(opts = {}) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/ffi_yajl/parser.rb', line 49

def initialize(opts = {})
  @opts = opts ? opts.dup : {}
  # JSON gem uses 'symbolize_names' and ruby-yajl supports this as well
  @opts[:symbolize_keys] = true if @opts[:symbolize_names]
end

Instance Attribute Details

#finished ⇒ Object

Returns the value of attribute finished.



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# File 'lib/ffi_yajl/parser.rb', line 27

def finished
  @finished
end

#key ⇒ Object

Returns the value of attribute key.



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# File 'lib/ffi_yajl/parser.rb', line 27

def key
  @key
end

#key_stack ⇒ Object

stack to keep track of keys as we create nested hashes



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# File 'lib/ffi_yajl/parser.rb', line 41

def key_stack
  @key_stack ||= []
end

#opts ⇒ Object

Returns the value of attribute opts.



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# File 'lib/ffi_yajl/parser.rb', line 29

def opts
  @opts
end

#stack ⇒ Object

stack used to build up our complex object



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# File 'lib/ffi_yajl/parser.rb', line 34

def stack
  @stack ||= []
end

Class Method Details

.parse(obj, *args) ⇒ Object 



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# File 'lib/ffi_yajl/parser.rb', line 45

def self.parse(obj, *args)
  new(*args).parse(obj)
end

Instance Method Details

#parse(str) ⇒ Object

Raises:



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# File 'lib/ffi_yajl/parser.rb', line 55

def parse(str)
  raise FFI_Yajl::ParseError, "input must be a string or IO" unless str.is_a?(String) || str.respond_to?(:read)

  # initialization that we can do in pure ruby
  yajl_opts = {}

  if @opts[:check_utf8] == false && @opts[:dont_validate_strings] == false
    raise ArgumentError, "options check_utf8 and dont_validate_strings are both false which conflict"
  end
  if @opts[:check_utf8] == true && @opts[:dont_validate_strings] == true
    raise ArgumentError, "options check_utf8 and dont_validate_strings are both true which conflict"
  end

  yajl_opts[:yajl_allow_comments] = true

  if @opts.key?(:allow_comments)
    yajl_opts[:yajl_allow_comments] = @opts[:allow_comments]
  end

  yajl_opts[:yajl_dont_validate_strings]  = (@opts[:check_utf8] == false || @opts[:dont_validate_strings])
  yajl_opts[:yajl_allow_trailing_garbage] = @opts[:allow_trailing_garbage]
  yajl_opts[:yajl_allow_multiple_values]  = @opts[:allow_multiple_values]
  yajl_opts[:yajl_allow_partial_values]   = @opts[:allow_partial_values]

  yajl_opts[:unique_key_checking]         = @opts[:unique_key_checking]

  # XXX: bug-compat with ruby-yajl
  return nil if str == ""

  str = str.read if str.respond_to?(:read)

  # call either the ext or ffi hook
  do_yajl_parse(str, yajl_opts)
end