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 11

def initialize(language)
  @lang = language
end

Instance Method Details

#add_label_options(context, clazz, result) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 95

def add_label_options(context, clazz, result)
  result.concat(@lang.labled_arguments(clazz).
    select{|f| 
      !context.element.eIsSet(f.name)}.collect do |f| 
      CompletionOption.new("#{f.name}:", "<#{f.eType.name}>")
    end )
end

#add_value_options(context, result) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 73

def add_value_options(context, result)
  if context.feature.is_a?(RGen::ECore::EAttribute) || !context.feature.containment
    if context.feature.is_a?(RGen::ECore::EReference)
      result.concat(reference_options(context))
    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
    # containment reference, ignore

  end
end

#block_options(context, clazz) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 42

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.abstract}.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.new("#{r.name}:", "<#{r.eType.name}>")
    end
end

#boolean_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 141

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

#complete(context) ⇒ Object

Provides completion options



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# File 'lib/rtext/default_completer.rb', line 17

def complete(context)
  clazz = context && context.element && context.element.class.ecore
  if clazz
    if context.in_block
      block_options(context, clazz)
    elsif !context.problem
      result = []
      if context.feature
        add_value_options(context, result)
      end
      if !context.after_label
        add_label_options(context, clazz, result)
      end
      result
    else
      # missing comma, after curly brace, etc.

      []
    end
  elsif context
    root_options
  else
    []
  end
end

#enum_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 114

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.new("#{lname}", "<#{context.feature.eType.name}>")
  end
end

#float_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 137

def float_options(context)
  (0..0).collect{|i| CompletionOption.new("#{i}.0", value_description(context)) }
end

#integer_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 133

def integer_options(context)
  (0..0).collect{|i| CompletionOption.new("#{i}", value_description(context)) }
end

#reference_options(context) ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 110

def reference_options(context)
  []
end

#root_options ⇒ Object 



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# File 'lib/rtext/default_completer.rb', line 103

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 125

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