Class: Pretentious::Context
- Inherits:
-
Object
- Object
- Pretentious::Context
- Defined in:
- lib/pretentious/context.rb
Overview
Contains references to scoped variables
Constant Summary collapse
- VARIABLE_NAMES =
list of variable names to use. i j are not there on purpose
%w(a b c d e f g h k l m n o p q r s t u v w x y z)
Instance Attribute Summary collapse
-
#declared_names ⇒ Object
Returns the value of attribute declared_names.
-
#previous_declarations ⇒ Object
Returns the value of attribute previous_declarations.
-
#variable_map ⇒ Object
Returns the value of attribute variable_map.
Instance Method Summary collapse
- #dump ⇒ Object
-
#initialize(variable_map = {}, declared_names = {}, previous_declarations = {}) ⇒ Context
constructor
A new instance of Context.
- #map_name(object_id) ⇒ Object
- #merge_variable_map(target_object) ⇒ Object
- #pick_name(object_id, value = :no_value_passed) ⇒ Object
- #register(object_id, name) ⇒ Object
- #register_instance_variable(object_id) ⇒ Object
- #subcontext(declarations) ⇒ Object
- #value_of(value) ⇒ Object
- #was_declared_previously?(object_id) ⇒ Boolean
Constructor Details
#initialize(variable_map = {}, declared_names = {}, previous_declarations = {}) ⇒ Context
Returns a new instance of Context.
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# File 'lib/pretentious/context.rb', line 10 def initialize(variable_map = {}, declared_names = {}, previous_declarations = {}) @declared_names = declared_names @variable_map = variable_map @previous_declarations = previous_declarations @current_name_dict = 0 end |
Instance Attribute Details
#declared_names ⇒ Object
Returns the value of attribute declared_names.
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# File 'lib/pretentious/context.rb', line 7 def declared_names @declared_names end |
#previous_declarations ⇒ Object
Returns the value of attribute previous_declarations.
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# File 'lib/pretentious/context.rb', line 7 def previous_declarations @previous_declarations end |
#variable_map ⇒ Object
Returns the value of attribute variable_map.
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# File 'lib/pretentious/context.rb', line 7 def variable_map @variable_map end |
Instance Method Details
#dump ⇒ Object
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# File 'lib/pretentious/context.rb', line 43 def dump puts "v-map #{@variable_map.inspect}" puts "d-map #{@declared_names.inspect}" puts "p-map #{@previous_declarations.inspect}" end |
#map_name(object_id) ⇒ Object
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# File 'lib/pretentious/context.rb', line 94 def map_name(object_id) object_id_to_declared_names = {} if @declared_names @declared_names.each do |k, v| object_id_to_declared_names[v[:object_id]] = k if v end end # return immediately if already mapped return object_id_to_declared_names[object_id] if object_id_to_declared_names.include? object_id nil end |
#merge_variable_map(target_object) ⇒ Object
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# File 'lib/pretentious/context.rb', line 31 def merge_variable_map(target_object) @variable_map.merge!(target_object._variable_map) if target_object.methods.include?(:_variable_map) && !target_object._variable_map.nil? end |
#pick_name(object_id, value = :no_value_passed) ⇒ Object
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# File 'lib/pretentious/context.rb', line 49 def pick_name(object_id, value = :no_value_passed) var_name = map_name(object_id) return var_name if var_name var_name = "var_#{object_id}" if !@variable_map.nil? && @variable_map.include?(object_id) candidate_name = @variable_map[object_id].to_s if !@declared_names.include?(candidate_name) var_name = candidate_name @declared_names[candidate_name] = { count: 1, object_id: object_id } else if @declared_names[candidate_name][:object_id] == object_id var_name = candidate_name else new_name = "#{candidate_name}_#{@declared_names[candidate_name][:count]}" var_name = "#{new_name}" @declared_names[candidate_name][:count] += 1 @declared_names[new_name] = { count: 1, object_id: object_id } end end else v = nil Kernel.loop do v = provide_name break if !@declared_names.key?(v) || v.nil? end var_name = v @declared_names[var_name] = { count: 1, object_id: object_id } end var_name end |
#register(object_id, name) ⇒ Object
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# File 'lib/pretentious/context.rb', line 39 def register(object_id, name) @variable_map[object_id] = name end |
#register_instance_variable(object_id) ⇒ Object
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# File 'lib/pretentious/context.rb', line 35 def register_instance_variable(object_id) @variable_map[object_id] = "@#{@previous_declarations[object_id]}" if @previous_declarations[object_id][0] != '@' end |
#subcontext(declarations) ⇒ Object
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# File 'lib/pretentious/context.rb', line 17 def subcontext(declarations) previous_declarations = {} declarations.select { |d| d[:used_by] != :inline }.each do |d| previous_declarations[d[:id]] = pick_name(d[:id]) end Pretentious::Context.new(@variable_map, {}, previous_declarations) end |
#value_of(value) ⇒ Object
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# File 'lib/pretentious/context.rb', line 90 def value_of(value) Pretentious.value_ize(self, value) end |
#was_declared_previously?(object_id) ⇒ Boolean
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# File 'lib/pretentious/context.rb', line 27 def was_declared_previously?(object_id) @previous_declarations.key? object_id end |