Class: RText::DefaultCompleter

Inherits:
Object
  • Object
show all
Defined in:
lib/rtext/default_completer.rb

Defined Under Namespace

Classes: CompletionOption

Instance Method Summary collapse

Constructor Details

#initialize(language) ⇒ DefaultCompleter

Creates a completer for RText::Language language.



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# File 'lib/rtext/default_completer.rb', line 37

def initialize(language)
  @lang = language
end

Instance Method Details

#add_label_options(context, clazz, result, version) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 127

def add_label_options(context, clazz, result, version)
  result.concat(@lang.labled_arguments(clazz).
    select{|f| 
      !context.element.eIsSet(f.name)}.collect do |f| 
      CompletionOption.from_text_extra("#{f.name}:", "<#{f.eType.name}>")
  end )
  if version > 0 && !context.position.after_comma &&
      context.element.class.ecore.eAllReferences.any? { |r| r.containment } && !context.position.before_brace
    result << CompletionOption.for_curly_braces(context)
  end
end

#add_value_options(context, result, version) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 100

def add_value_options(context, result, version)
  if context.feature.is_a?(RGen::ECore::EAttribute) || !context.feature.containment
    if context.feature.is_a?(RGen::ECore::EReference)
      result.concat(reference_options(context))
      if version > 0 && !context.position.before_bracket && context.feature.upperBound != 1
        result << CompletionOption.for_square_brackets
      end
    elsif context.feature.eType.is_a?(RGen::ECore::EEnum)
      result.concat(enum_options(context))
    elsif context.feature.eType.instanceClass == String
      result.concat(string_options(context))
    elsif context.feature.eType.instanceClass == Integer 
      result.concat(integer_options(context))
    elsif context.feature.eType.instanceClass == Float 
      result.concat(float_options(context))
    elsif context.feature.eType.instanceClass == RGen::MetamodelBuilder::DataTypes::Boolean
      result.concat(boolean_options(context))
    else
      # no options 
    end
  else
    if version > 0 && !context.position.before_bracket && context.feature.upperBound != 1
      result << CompletionOption.for_square_brackets
    end
  end
end

#block_options(context, clazz) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 69

def block_options(context, clazz)
  types = []
  labled_refs = []
  if context.feature
    if context.feature.is_a?(RGen::ECore::EReference) && context.feature.containment
      types = @lang.concrete_types(context.feature.eType)
    else
      # invalid, ignore
    end
  else
    # all target types which don't need a label
    # and all lables which are needed by a potential target type
    @lang.containments(clazz).each do |r|
      ([r.eType] + r.eType.eAllSubTypes).select{|t| t.concrete}.each do |t|
        if @lang.labeled_containment?(clazz, r) || @lang.containments_by_target_type(clazz, t).size > 1
          labled_refs << r
        else
          types << t
        end
      end
    end
  end
  types.uniq.
    sort{|a,b| a.name <=> b.name}.collect do |c| 
      class_completion_option(c)
    end +
  labled_refs.uniq.collect do |r|
      CompletionOption.from_text_extra("#{r.name}:", "<#{r.eType.name}>")
    end
end

#boolean_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 186

def boolean_options(context)
  [true, false].collect{|b| CompletionOption.from_text_extra("#{b}", value_description(context)) }
end

#complete(context, version = 0) ⇒ Object

Provides completion options



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# File 'lib/rtext/default_completer.rb', line 43

def complete(context, version=0)
  clazz = context && context.element && context.element.class.ecore
  if clazz
    if context.position.in_block
      block_options(context, clazz)
    elsif !context.problem
      result = []
      add_value_options(context, result, version) if context.feature
      add_label_options(context, clazz, result, version) unless context.position.after_label
      result
    else
      # missing comma, after curly brace, etc.
      if version > 0 && !context.position.before_brace &&
          context.element.class.ecore.eAllReferences.any? { |r| r.containment }
        [CompletionOption.for_curly_braces(context)]
      else
        []
      end
    end
  elsif context
    root_options
  else
    []
  end
end

#enum_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 150

def enum_options(context)
  context.feature.eType.eLiterals.collect do |l|
    lname = l.name
    if lname =~ /^\d|\W/ || lname == "true" || lname == "false"
      lname =  "\"#{lname.gsub("\\","\\\\\\\\").gsub("\"","\\\"").gsub("\n","\\n").
        gsub("\r","\\r").gsub("\t","\\t").gsub("\f","\\f").gsub("\b","\\b")}\""
    end
    CompletionOption.from_text_extra("#{lname}", "<#{context.feature.eType.name}>")
  end
end

#float_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 180

def float_options(context)
  default_comp = get_default_value_completion(context)
  return [default_comp] if default_comp
  (0..0).collect{|i| CompletionOption.from_text_extra("#{i}.0", value_description(context)) }
end

#get_default_value_completion(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 169

def get_default_value_completion(context)
  return nil unless context.feature.defaultValue
  CompletionOption.from_text_extra("#{context.feature.defaultValue}", value_description(context))
end

#integer_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 174

def integer_options(context)
  default_comp = get_default_value_completion(context)
  return [default_comp] if default_comp
  (0..0).collect{|i| CompletionOption.from_text_extra("#{i}", value_description(context)) }
end

#reference_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 146

def reference_options(context)
  []
end

#root_options ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 139

def root_options
  @lang.root_classes.
    sort{|a,b| a.name <=> b.name}.collect do |c| 
      class_completion_option(c)
    end 
end

#string_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 161

def string_options(context)
  if @lang.unquoted?(context.feature)
    [ CompletionOption.from_text_extra("#{context.feature.name.gsub(/\W/,"")}", value_description(context)) ]
  else
    [ CompletionOption.from_text_extra("\"\"", value_description(context)) ]
  end
end