Class: RSyntaxTree::LsifGraph

Inherits:
BaseGraph show all
Defined in:
lib/rsyntaxtree/lsif_graph.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from BaseGraph

#calculate_height, #calculate_indent, #calculate_level, #calculate_width, #draw_elements, #finalize_ltr, #get_leftmost, #get_rightmost, #make_balance, #node_centering, #parse_list, #prepare_ltr, #subtree_bounds

Constructor Details

#initialize(element_list, params, global) ⇒ LsifGraph

Returns a new instance of LsifGraph.



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 18

def initialize(element_list, params, global)
  super(element_list, params, global)
  @height = 0
  @width = 0
  @nodes = []
  @edges = []
  @paths_data = []
  @params = params
  @fontsize = params[:fontsize]
  @color = params[:color]
  @polyline = params[:polyline]
  @visited_x = {}
  @global = global
end

Instance Attribute Details

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 16

def height
  @height
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 16

def width
  @width
end

Instance Method Details

#draw_connector(id = 1) ⇒ Object

Override draw_connector to capture all edges including “none” connector



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 68

def draw_connector(id = 1)
  parent = @element_list.get_id(id)
  children = parent.children.map { |c| @element_list.get_id(c) }

  if children.size == 1
    child = children[0]
    case @leafstyle
    when "auto"
      if parent.triangle || child.contains_phrase
        triangle_to_parent(parent, child)
      else
        line_to_parent(parent, child)
      end
    when "bar"
      if parent.triangle
        triangle_to_parent(parent, child)
      else
        line_to_parent(parent, child)
      end
    when "nothing", "none"
      if parent.triangle
        triangle_to_parent(parent, child)
      elsif ETYPE_LEAF != child.type
        line_to_parent(parent, child)
      else
        @edges << { from: parent.id, to: child.id, type: "dominance", connector: "none" }
      end
    end
  else
    children.each do |child|
      line_to_parent(parent, child)
    end
  end

  parent.children.each { |c| draw_connector(c) }
end

#draw_element(element) ⇒ Object

Override rendering methods to collect structural data



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 42

def draw_element(element)
  # Track height the same way SVGGraph does
  top = element.vertical_indent
  text_y = top + @global[:single_line_height] - @global[:height_connector_to_text]
  element.content.each_with_index do |l, idx|
    case l[:type]
    when :border, :bborder
      text_y += idx.zero? ? -l[:height] : l[:height]
    when :text
      text_y += l[:elements].map { |e| e[:height] }.max if idx != 0
    end
    @height = text_y if text_y > @height
  end

  @nodes << build_node(element)
end

#draw_paths ⇒ Object 



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 105

def draw_paths
  path_pool_target = {}
  path_pool_other = {}
  path_pool_source = {}
  path_flags = []
  line_pool = {}
  line_flags = []

  elist = @element_list.get_elements

  elist.each do |element|
    et = element.path
    et.each do |tr|
      if /\A-(>|<)?(\d+)\z/ =~ tr
        arrow = $1
        tr = $2
        if line_pool[tr]
          line_pool[tr] << { id: element.id, arrow: arrow }
        else
          line_pool[tr] = [{ id: element.id, arrow: arrow }]
        end
        line_flags << tr
      elsif /\A(?:>|<)(\d+)\z/ =~ tr
        tr = $1
        if path_pool_target[tr]
          path_pool_target[tr] << element.id
        else
          path_pool_target[tr] = [element.id]
        end
        path_flags << tr
      elsif path_pool_source[tr]
        if path_pool_other[tr]
          path_pool_other[tr] << element.id
        else
          path_pool_other[tr] = [element.id]
        end
        path_flags << tr
      else
        path_pool_source[tr] = element.id
        path_flags << tr
      end
    end
  end

  # Resolve movement paths
  path_pool_source.each do |k, source_id|
    if (target_ids = path_pool_target[k])
      target_ids.each do |target_id|
        @paths_data << { from: source_id, to: target_id, direction: "forward", type: "movement" }
      end
    elsif (other_ids = path_pool_other[k])
      other_ids.each do |other_id|
        @paths_data << { from: source_id, to: other_id, direction: "forward", type: "movement" }
      end
    end
  end

  # Resolve bidirectional paths
  remaining = path_flags.tally.select { |k, v| v >= 2 && !path_pool_source.key?(k) }.keys
  remaining.each do |k|
    targets = path_pool_target[k]
    next if targets.nil? || targets.size < 2

    first = targets[0]
    targets[1..].each do |target_id|
      @paths_data << { from: first, to: target_id, direction: "bidirectional", type: "movement" }
    end
  end

  # Resolve line-type connections
  line_pool.each do |_k, v|
    next unless v.size >= 2

    a = v[0]
    b = v[1]
    direction = if a[:arrow] && b[:arrow]
                  "bidirectional"
                elsif a[:arrow]
                  "forward"
                elsif b[:arrow]
                  "forward"
                else
                  "forward"
                end
    @paths_data << { from: a[:id], to: b[:id], direction: direction, type: "movement" }
  end
end

#line_to_parent(parent, child) ⇒ Object 



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 59

def line_to_parent(parent, child)
  @edges << { from: parent.id, to: child.id, type: "dominance", connector: "line" }
end

#lsif_data ⇒ Object 



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 33

def lsif_data
  metrics = parse_list
  @width = metrics[:width] + @global[:h_gap_between_nodes] * 2
  @height = metrics[:height] + @global[:height_connector_to_text] / 2
  build_json
end

#triangle_to_parent(parent, child) ⇒ Object 



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# File 'lib/rsyntaxtree/lsif_graph.rb', line 63

def triangle_to_parent(parent, child)
  @edges << { from: parent.id, to: child.id, type: "dominance", connector: "triangle" }
end