rubyx/lib/risc/instructions/load_constant.rb
Torsten Rüger c43436f35a Change Mom to SlotMachine
rather large commit, but essentially a simple rename
Rationale in docs and blogs
2019-10-03 20:55:41 +03:00

39 lines
1.1 KiB
Ruby

module Risc
# load a constant into a register
#
# first is the actual constant, either immediate register or object reference (from the space)
# second argument is the register the constant is loaded into
class LoadConstant < Instruction
def initialize( source , constant , register)
super(source)
@register = register
@constant = constant
raise "Not Constant #{constant}" if constant.is_a?(SlotMachine::SlotDefinition)
raise "Not register #{register}" unless RegisterValue.look_like_reg(register)
end
attr_accessor :register , :constant
def to_s
class_source "#{register} <- #{constant_str}"
end
private
def constant_str
case @constant
when String , Symbol
@constant.to_s
else
if( @constant.respond_to? :rxf_reference_name )
constant.rxf_reference_name
else
constant.class.name.to_s
end
end
end
end
def self.load_constant( source , constant , register )
LoadConstant.new( source , constant , register )
end
end