Class: Transpec::DynamicAnalyzer

Inherits:
Object
  • Object
show all
Defined in:
lib/transpec/dynamic_analyzer.rb,
lib/transpec/dynamic_analyzer/rewriter.rb,
lib/transpec/dynamic_analyzer/runtime_data.rb

Defined Under Namespace

Classes: Rewriter, RuntimeData

Constant Summary collapse

EVAL_TARGET_TYPES = 
[:object, :context]
ANALYSIS_METHOD = 
'transpec_analysis'
HELPER_FILE = 
'transpec_analysis_helper.rb'
RESULT_FILE = 
'transpec_analysis_result.json'
HELPER_SOURCE = 
"  require 'pathname'\n  require 'json'\n\n  module TranspecAnalysis\n    @base_path = Dir.pwd\n\n    def self.data\n      @data ||= {}\n    end\n\n    def self.node_id(filename, begin_pos, end_pos)\n      absolute_path = File.expand_path(filename)\n      relative_path = Pathname.new(absolute_path).relative_path_from(base_pathname).to_s\n      [relative_path, begin_pos, end_pos].join('_')\n    end\n\n    def self.base_pathname\n      @base_pathname ||= Pathname.new(@base_path)\n    end\n\n    at_exit do\n      # Use JSON rather than Marshal so that:\n      # * Unknown third-party class information won't be serialized.\n      #   (Such objects are stored as a string.)\n      # * Singleton method information won't be serialized.\n      #   (With Marshal.load, `singleton can't be dumped (TypeError)` will be raised.)\n      path = File.join(@base_path, '\#{RESULT_FILE}')\n      File.open(path, 'w') do |file|\n        JSON.dump(data, file)\n      end\n    end\n  end\n\n  def \#{ANALYSIS_METHOD}(object, context, analysis_codes, filename, begin_pos, end_pos)\n    pair_array = analysis_codes.map do |key, (target_type, code)|\n      target = case target_type\n               when :object  then object\n               when :context then context\n               end\n\n      eval_data = {}\n\n      begin\n        eval_data[:result] = target.instance_eval(code)\n      rescue Exception => error\n        eval_data[:error] = error\n      end\n\n      [key, eval_data]\n    end\n\n    object_data = Hash[pair_array]\n\n    id = TranspecAnalysis.node_id(filename, begin_pos, end_pos)\n    TranspecAnalysis.data[id] = object_data\n\n    object\n  end\n"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ DynamicAnalyzer 



84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/transpec/dynamic_analyzer.rb', line 84

def initialize(options = {})
  @project = options[:project] || Project.new
  @rspec_command = options[:rspec_command] || default_rspec_command
  @silent = options[:silent] || false

  if block_given?
    in_copied_project do
      yield self
    end
  end
end

Instance Attribute Details

#project ⇒ Object (readonly)

Returns the value of attribute project.



81
82
83
 
# File 'lib/transpec/dynamic_analyzer.rb', line 81

def project
  @project
end

#rspec_command ⇒ Object (readonly)

Returns the value of attribute rspec_command.



81
82
83
 
# File 'lib/transpec/dynamic_analyzer.rb', line 81

def rspec_command
  @rspec_command
end

#silent ⇒ Object (readonly) Also known as: silent?

Returns the value of attribute silent.



81
82
83
 
# File 'lib/transpec/dynamic_analyzer.rb', line 81

def silent
  @silent
end

Instance Method Details

#analyze(paths = []) ⇒ Object 



104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
 
# File 'lib/transpec/dynamic_analyzer.rb', line 104

def analyze(paths = [])
  in_copied_project do
    rewriter = Rewriter.new

    FileFinder.find(paths).each do |file_path|
      begin
        rewriter.rewrite_file!(file_path)
      rescue Parser::SyntaxError # rubocop:disable HandleExceptions
        # Syntax errors will be reported in CLI with Converter.
      end
    end

    File.write(HELPER_FILE, HELPER_SOURCE)

    run_rspec(paths)

    File.open(RESULT_FILE) do |file|
      RuntimeData.load(file)
    end
  end
end

#copy_recursively(source_root, destination_root) ⇒ Object 



156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
 
# File 'lib/transpec/dynamic_analyzer.rb', line 156

def copy_recursively(source_root, destination_root)
  source_root = File.expand_path(source_root)
  source_root_pathname = Pathname.new(source_root)

  destination_root = File.expand_path(destination_root)
  if File.directory?(destination_root)
    destination_root = File.join(destination_root, File.basename(source_root))
  end

  Find.find(source_root) do |source_path|
    relative_path = Pathname.new(source_path).relative_path_from(source_root_pathname).to_s
    destination_path = File.join(destination_root, relative_path)
    copy(source_path, destination_path)
  end
end

#default_rspec_command ⇒ Object 



96
97
98
99
100
101
102
 
# File 'lib/transpec/dynamic_analyzer.rb', line 96

def default_rspec_command
  if @project.require_bundler?
    'bundle exec rspec'
  else
    'rspec'
  end
end

#in_copied_project ⇒ Object 



126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
 
# File 'lib/transpec/dynamic_analyzer.rb', line 126

def in_copied_project
  return yield if @in_copied_project

  @in_copied_project = true

  Dir.mktmpdir do |tmpdir|
    copy_recursively(@project.path, tmpdir)
    @copied_project_path = File.join(tmpdir, @project.basename)
    Dir.chdir(@copied_project_path) do
      yield
    end
  end
ensure
  @in_copied_project = false
end

#run_rspec(paths) ⇒ Object 



142
143
144
145
146
147
148
149
150
151
152
153
154
 
# File 'lib/transpec/dynamic_analyzer.rb', line 142

def run_rspec(paths)
  @project.with_bundler_clean_env do
    ENV['SPEC_OPTS'] = ['-r', "./#{HELPER_FILE}"].shelljoin

    command = "#{rspec_command} #{paths.shelljoin}"

    if silent?
      `#{command} 2> /dev/null`
    else
      system(command)
    end
  end
end