33 lines
641 B
Ruby
33 lines
641 B
Ruby
|
class CopyProp
|
||
|
|
def initialize(code)
|
||
|
|
@code=code
|
||
|
|
end
|
||
|
|
def optimize()
|
||
|
|
table={}
|
||
|
|
i=0
|
||
|
|
@code.clone.each do |quad|
|
||
|
|
if quad[3]==nil and quad[1]=="="
|
||
|
|
table[quad[0]]=quad[2]
|
||
|
|
else
|
||
|
|
if table.has_key? quad[2]
|
||
|
|
while true
|
||
|
|
replace=table[quad[2]]
|
||
|
|
break if replace==nil
|
||
|
|
quad[2]=replace
|
||
|
|
end
|
||
|
|
end
|
||
|
|
if table.has_key? quad[3]
|
||
|
|
while true
|
||
|
|
replace=table[quad[3]]
|
||
|
|
break if replace==nil
|
||
|
|
quad[3]=replace
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
@code[i]=quad
|
||
|
|
i+=1
|
||
|
|
end
|
||
|
|
return @code
|
||
|
|
end
|
||
|
|
end
|