41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
module Ast
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class IfExpression < Expression
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attr_reader :cond, :if_true, :if_false
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def initialize cond, if_true, if_false
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@cond, @if_true, @if_false = cond, if_true, if_false
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end
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def inspect
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self.class.name + ".new(" + cond.inspect + ", "+
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if_true.inspect + "," + if_false.inspect + " )"
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end
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def attributes
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[:cond, :if_true, :if_false]
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end
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def compile context , into
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false_block = into.new_block "#{into.name}_else"
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merge_block = false_block.new_block "#{into.name}_if_merge"
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cond_val = cond.compile(context , into)
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puts "compiled if condition #{cond_val.inspect}"
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into.b false_block , condition_code: cond_val.not_operator
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last = nil
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if_true.each do |part|
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last = part.compile(context , into )
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puts "compiled in if true #{last.inspect}"
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end
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into.b merge_block
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if_false.each do |part|
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last = part.compile(context , false_block )
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puts "compiled in if false #{last.inspect}"
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end
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puts "compile if end"
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into.insert_at merge_block
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return last
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end
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end
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end |