Class: SyntaxTree::YARV::SeaOfNodes::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/syntax_tree/yarv/sea_of_nodes.rb

Overview

The compiler is responsible for taking a data flow graph and turning it into a sea of nodes.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dfg) ⇒ Compiler

Returns a new instance of Compiler.



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# File 'lib/syntax_tree/yarv/sea_of_nodes.rb', line 103

def initialize(dfg)
  @dfg = dfg
  @nodes = []

  # We need to put a unique ID on the synthetic nodes in the graph, so
  # we keep a counter that we increment any time we create a new
  # synthetic node.
  @id_counter = 999
end

Instance Attribute Details

#dfg ⇒ Object (readonly)

Returns the value of attribute dfg.



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# File 'lib/syntax_tree/yarv/sea_of_nodes.rb', line 101

def dfg
  @dfg
end

#nodes ⇒ Object (readonly)

Returns the value of attribute nodes.



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# File 'lib/syntax_tree/yarv/sea_of_nodes.rb', line 101

def nodes
  @nodes
end

Instance Method Details

#compile ⇒ Object 



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# File 'lib/syntax_tree/yarv/sea_of_nodes.rb', line 113

def compile
  local_graphs = {}
  dfg.blocks.each do |block|
    local_graphs[block.id] = create_local_graph(block)
  end

  connect_local_graphs_control(local_graphs)
  connect_local_graphs_data(local_graphs)
  cleanup_phi_nodes
  cleanup_insn_nodes

  SeaOfNodes.new(dfg, nodes, local_graphs).tap(&:verify)
end