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Versions: 27
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Contents
module Ruby2JS
class Converter
# (return
# (int 1))
handle :return do |value=nil|
if value
put 'return '; parse value
else
put 'return'
end
end
EXPRESSIONS = [ :array, :float, :hash, :int, :lvar, :nil, :send, :attr,
:str, :sym, :dstr, :dsym, :cvar, :ivar, :zsuper, :super, :or, :and,
:block, :const, :true, :false ]
handle :autoreturn do |*statements|
return if statements == [nil]
block = statements.dup
while block.length == 1 and block.first.type == :begin
block = block.first.children.dup
end
return if block == []
if EXPRESSIONS.include? block.last.type
block.push @ast.updated(:return, [block.pop])
elsif block.last.type == :if
node = block.pop
if node.children[1] and node.children[2] and
EXPRESSIONS.include? node.children[1].type and
EXPRESSIONS.include? node.children[2].type
node = s(:return, node)
else
conditions = [[ node.children.first,
node.children[1] ? s(:autoreturn, node.children[1]) : nil ]]
while node.children[2] and node.children[2].type == :if
node = node.children[2]
conditions.unshift [ node.children.first,
node.children[1] ? s(:autoreturn, node.children[1]) : nil ]
end
node = node.children[2] ? s(:autoreturn, node.children[2]) : nil
conditions.each do |condition, cstatements|
node = s(:if, condition, cstatements, node)
end
end
block.push node
end
if block.length == 1
parse block.first, @state
else
parse s(:begin, *block), @state
end
end
end
end
Version data entries
27 entries across 27 versions & 1 rubygems