35 lines
1006 B
Ruby
35 lines
1006 B
Ruby
module Ast
|
|
class WhileExpression < Expression
|
|
attr_reader :condition, :body
|
|
def initialize condition, body
|
|
@condition , @body = condition , body
|
|
end
|
|
def inspect
|
|
self.class.name + ".new(" + condition.inspect + ", " + body.inspect + " )"
|
|
end
|
|
def to_s
|
|
"while(#{condition}) do\n" + body.join("\n") + "\nend\n"
|
|
end
|
|
def attributes
|
|
[:condition, :body]
|
|
end
|
|
def compile context , into
|
|
while_block = into.new_block "#{into.name}_while"
|
|
ret = while_block.new_block "#{into.name}_return"
|
|
puts "compiling while condition #{condition}"
|
|
cond_val = condition.compile(context , while_block)
|
|
while_block.b ret , condition_code: cond_val.not_operator
|
|
last = nil
|
|
body.each do |part|
|
|
puts "compiling in while #{part}"
|
|
last = part.compile(context , while_block )
|
|
end
|
|
while_block.b while_block
|
|
puts "compile while end"
|
|
into.insert_at ret
|
|
return last
|
|
end
|
|
end
|
|
|
|
|
|
end |