Class: Schemurai::VM::Program

Inherits:
Object
  • Object
show all
Defined in:
lib/schemurai/vm/compiler.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node) ⇒ Program

Returns a new instance of Program.



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# File 'lib/schemurai/vm/compiler.rb', line 113

def initialize(node)
  @node = node
  @tracks_evaluation = false
  @tracks_dynamic_scope = false
  schema = node.schema
  if schema.instance_of?(Hash)
    @recursive_anchor = schema["$recursiveAnchor"] == true
    dynamic_anchor = schema["$dynamicAnchor"]
    @dynamic_anchor = -dynamic_anchor if dynamic_anchor.instance_of?(String)
  else
    @recursive_anchor = false
  end
end

Instance Attribute Details

#code ⇒ Object (readonly)

Returns the value of attribute code.



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# File 'lib/schemurai/vm/compiler.rb', line 111

def code
  @code
end

#dynamic_anchor ⇒ Object (readonly)

Returns the value of attribute dynamic_anchor.



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# File 'lib/schemurai/vm/compiler.rb', line 111

def dynamic_anchor
  @dynamic_anchor
end

#node ⇒ Object (readonly)

Returns the value of attribute node.



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# File 'lib/schemurai/vm/compiler.rb', line 111

def node
  @node
end

Instance Method Details

#emit(code, opcode, operand) ⇒ Object 



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# File 'lib/schemurai/vm/compiler.rb', line 127

def emit(code, opcode, operand)
  code.push(opcode, operand)
end

#finish(code) ⇒ Object 



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# File 'lib/schemurai/vm/compiler.rb', line 139

def finish(code)
  flags = 0
  flags |= TRACKS_EVALUATION if @tracks_evaluation
  flags |= TRACKS_DYNAMIC_SCOPE if @tracks_dynamic_scope
  code[0] = flags
  @code = code.freeze
  freeze
end

#recursive_anchor? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/schemurai/vm/compiler.rb', line 152

def recursive_anchor?
  @recursive_anchor
end

#track_dynamic_scope! ⇒ Object 



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# File 'lib/schemurai/vm/compiler.rb', line 135

def track_dynamic_scope!
  @tracks_dynamic_scope = true
end

#track_evaluation! ⇒ Object 



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# File 'lib/schemurai/vm/compiler.rb', line 131

def track_evaluation!
  @tracks_evaluation = true
end

#tracks_dynamic_scope? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/schemurai/vm/compiler.rb', line 156

def tracks_dynamic_scope?
  @tracks_dynamic_scope
end

#tracks_evaluation? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/schemurai/vm/compiler.rb', line 148

def tracks_evaluation?
  @tracks_evaluation
end