Module: Ruby2JS

Defined in:
lib/ruby2js/filter/jquery.rb,
lib/ruby2js.rb,
lib/ruby2js/rails.rb,
lib/ruby2js/version.rb,
lib/ruby2js/converter.rb,
lib/ruby2js/converter/if.rb,
lib/ruby2js/converter/arg.rb,
lib/ruby2js/converter/def.rb,
lib/ruby2js/converter/for.rb,
lib/ruby2js/converter/nil.rb,
lib/ruby2js/converter/sym.rb,
lib/ruby2js/converter/var.rb,
lib/ruby2js/filter/return.rb,
lib/ruby2js/filter/strict.rb,
lib/ruby2js/converter/args.rb,
lib/ruby2js/converter/case.rb,
lib/ruby2js/converter/cvar.rb,
lib/ruby2js/converter/defs.rb,
lib/ruby2js/converter/dstr.rb,
lib/ruby2js/converter/hash.rb,
lib/ruby2js/converter/ivar.rb,
lib/ruby2js/converter/next.rb,
lib/ruby2js/converter/self.rb,
lib/ruby2js/converter/send.rb,
lib/ruby2js/converter/xstr.rb,
lib/ruby2js/converter/array.rb,
lib/ruby2js/converter/begin.rb,
lib/ruby2js/converter/block.rb,
lib/ruby2js/converter/break.rb,
lib/ruby2js/converter/casgn.rb,
lib/ruby2js/converter/class.rb,
lib/ruby2js/converter/const.rb,
lib/ruby2js/converter/masgn.rb,
lib/ruby2js/converter/super.rb,
lib/ruby2js/converter/undef.rb,
lib/ruby2js/converter/until.rb,
lib/ruby2js/converter/vasgn.rb,
lib/ruby2js/converter/while.rb,
lib/ruby2js/converter/cvasgn.rb,
lib/ruby2js/converter/ivasgn.rb,
lib/ruby2js/converter/module.rb,
lib/ruby2js/converter/opasgn.rb,
lib/ruby2js/converter/regexp.rb,
lib/ruby2js/converter/return.rb,
lib/ruby2js/filter/angularrb.rb,
lib/ruby2js/filter/functions.rb,
lib/ruby2js/converter/boolean.rb,
lib/ruby2js/converter/defined.rb,
lib/ruby2js/converter/kwbegin.rb,
lib/ruby2js/converter/literal.rb,
lib/ruby2js/converter/logical.rb,
lib/ruby2js/filter/underscore.rb,
lib/ruby2js/converter/blockpass.rb,
lib/ruby2js/converter/prototype.rb,
lib/ruby2js/converter/untilpost.rb,
lib/ruby2js/converter/whilepost.rb,
lib/ruby2js/filter/angular-route.rb,
lib/ruby2js/filter/angular-resource.rb

Overview

})

Defined Under Namespace

Modules: Filter, Rails, VERSION Classes: Converter

Class Method Summary collapse

Class Method Details

.convert(source, options = {}) ⇒ Object 



48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
 
# File 'lib/ruby2js.rb', line 48

def self.convert(source, options={})

  if Proc === source
    file,line = source.source_location
    source = File.read(file.dup.untaint).untaint
    ast = find_block( parse(source), line )
  elsif Parser::AST::Node === source
    ast = source
    source = ast.loc.expression.source_buffer.source
  else
    ast = parse( source )
  end

  filters = options[:filters] || Filter::DEFAULTS

  unless filters.empty?
    filter = Filter::Processor
    filters.reverse.each do |mod|
      filter = Class.new(filter) {include mod} 
    end
    ast = filter.new.process(ast)
  end

  ruby2js = Ruby2JS::Converter.new( ast )

  ruby2js.binding = options[:binding]
  ruby2js.ivars = options[:ivars]
  if ruby2js.binding and not ruby2js.ivars
    ruby2js.ivars = ruby2js.binding.eval \
      'Hash[instance_variables.map {|var| [var, instance_variable_get(var)]}]'
  end

  ruby2js.width = options[:width] if options[:width]

  if source.include? "\n"
    ruby2js.enable_vertical_whitespace 
    lines = ruby2js.to_js.split("\n")
    pre = ''
    pending = false
    blank = true
    lines.each do |line|
      next if line.empty?

      if ')}]'.include? line[0]
        pre.sub!(/^  /,'')
        line.sub!(/([,;])$/,"\\1\n")
        pending = true
      else
        pending = false
      end

      line.sub! /^/, pre
      if '({['.include? line[-1]
        pre += '  ' 
        line.sub!(/^/,"\n") unless blank or pending
        pending = true
      end

      blank = pending
    end

    lines.join("\n").gsub(/^  ( *(case.*|default):$)/, '\1')
  else
    ruby2js.to_js
  end
end

.find_block(ast, line) ⇒ Object 



122
123
124
125
126
127
128
129
130
131
132
133
134
135
 
# File 'lib/ruby2js.rb', line 122

def self.find_block(ast, line)
  if ast.type == :block and ast.loc.expression.line == line
    return ast.children.last
  end

  ast.children.each do |child|
    if Parser::AST::Node === child
      block = find_block child, line
      return block if block
    end
  end

  nil
end

.parse(source) ⇒ Object 



115
116
117
118
119
120
 
# File 'lib/ruby2js.rb', line 115

def self.parse(source)
  # workaround for https://github.com/whitequark/parser/issues/112
  buffer = Parser::Source::Buffer.new('__SOURCE__')
  buffer.raw_source = source.encode('utf-8')
  Parser::CurrentRuby.new.parse(buffer)
end