Class: StructureProcessor

Inherits:
SexpProcessor
  • Object
show all
Defined in:
lib/ruby_diff/structure_processor.rb

Overview

StructureProcessor is a SexpProcessor which will generate a logical model of the ruby code. It can be fooled by metaprogramming and method redefinition, but in most cases should be fairly accurate.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name = '') ⇒ StructureProcessor

Returns a new instance of StructureProcessor.



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# File 'lib/ruby_diff/structure_processor.rb', line 108

def initialize(name='')
  super()
  @name = name
  self.strict = false
  self.auto_shift_type = true
  
  @instance_scope = true
  @code_objects = {}
  @root_objects = {}
  @scope_stack = []
  @meta_methods = {
    :attr_accessor => AccessorHandler.new("accessor"),
    :attr_writer   => AccessorHandler.new("writer"),
    :attr_reader   => AccessorHandler.new("reader")
  }
end

Instance Attribute Details

#code_objects ⇒ Object

Returns the value of attribute code_objects.



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# File 'lib/ruby_diff/structure_processor.rb', line 102

def code_objects
  @code_objects
end

#meta_methods ⇒ Object (readonly)

Returns the value of attribute meta_methods.



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# File 'lib/ruby_diff/structure_processor.rb', line 106

def meta_methods
  @meta_methods
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/ruby_diff/structure_processor.rb', line 101

def name
  @name
end

#root_objects ⇒ Object

Returns the value of attribute root_objects.



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# File 'lib/ruby_diff/structure_processor.rb', line 103

def root_objects
  @root_objects
end

#scope_stack ⇒ Object

Returns the value of attribute scope_stack.



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# File 'lib/ruby_diff/structure_processor.rb', line 105

def scope_stack
  @scope_stack
end

Instance Method Details

#diff(other_processor) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 188

def diff(other_processor)
  method_diff = CodeComparison.new(self.root_objects, other_processor.root_objects).changes
end

#process_class(exp) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 125

def process_class(exp)
  name = exp.shift
  super_class = exp.shift
  body = exp.shift
  
  name, temp_scope = process_colon2_constants(name) if name.is_a? Array
  
  record ClassCode.new(name, temp_scope || self.scope, body) do
    s(:class, name, process(super_class), process(body))
  end
end

#process_defn(exp) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 148

def process_defn(exp)
  name = exp.shift
  body = process exp.shift
  
  record MethodCode.new(name, self.scope, @instance_scope, body) do
    s(:defn, name, body)
  end
end

#process_defs(exp) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 157

def process_defs(exp)
  exp_scope = process exp.shift
  name = exp.shift
  body = process exp.shift
  
  record MethodCode.new(name, self.scope, false, body) do
    s(:defs, exp_scope, name, body)
  end
end

#process_fcall(exp) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 176

def process_fcall(exp)
  name = exp.shift
  args = process exp.shift

  if meta_handler = @meta_methods[name]
    meta_codes = meta_handler.meta_codes(args, self.scope)
    meta_codes.each{|m| record(m)}
  end
  
  return s(:fcall, name, args)
end

#process_module(exp) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 137

def process_module(exp)
  name = exp.shift
  body = exp.shift
  
  name, temp_scope = process_colon2_constants(name) if name.is_a? Array
  
  record ModuleCode.new(name, temp_scope || self.scope, body) do
    s(:class, name, process(body))
  end
end

#process_sclass(exp) ⇒ Object 



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# File 'lib/ruby_diff/structure_processor.rb', line 167

def process_sclass(exp)
  @instance_scope = false
  exp_scope = process exp.shift
  body = process exp.shift
  @instance_scope = true
  
  s(:sclass, exp_scope, body)
end