Torsten Rüger
c43436f35a
rather large commit, but essentially a simple rename Rationale in docs and blogs
39 lines
1.1 KiB
Ruby
39 lines
1.1 KiB
Ruby
|
|
module Vool
|
|
class WhileStatement < Statement
|
|
attr_reader :condition , :body , :hoisted
|
|
|
|
def initialize( condition , body , hoisted = nil)
|
|
@hoisted = hoisted
|
|
@condition = condition
|
|
@body = body
|
|
end
|
|
|
|
def to_slot( compiler )
|
|
merge_label = SlotMachine::Label.new(self, "merge_label_#{object_id.to_s(16)}")
|
|
cond_label = SlotMachine::Label.new(self, "cond_label_#{object_id.to_s(16)}")
|
|
codes = cond_label
|
|
codes << @hoisted.to_slot(compiler) if @hoisted
|
|
codes << @condition.to_slot(compiler) if @condition.is_a?(SendStatement)
|
|
codes << SlotMachine::TruthCheck.new(condition.to_slot_definition(compiler) , merge_label)
|
|
codes << @body.to_slot(compiler)
|
|
codes << SlotMachine::Jump.new(cond_label)
|
|
codes << merge_label
|
|
end
|
|
|
|
def each(&block)
|
|
block.call(self)
|
|
@condition.each(&block)
|
|
@hoisted.each(&block) if @hoisted
|
|
@body.each(&block)
|
|
end
|
|
|
|
def to_s(depth = 0)
|
|
lines =[ "while (#{@condition})" , @body.to_s(1) , "end"]
|
|
lines.unshift( @hoisted.to_s) if @hoisted
|
|
at_depth(depth , *lines )
|
|
end
|
|
|
|
end
|
|
end
|