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Contents
module Ruby2JS
class Converter
# (if
# (true)
# (...)
# (...))
handle :if do |condition, then_block, else_block|
# return parse not condition if else_block and no then_block
if else_block and not then_block
return parse(s(:if, s(:not, condition), else_block, nil), @state)
end
then_block ||= s(:nil)
if @state == :statement
begin
scope, @scope = @scope, false
mark = output_location
# use short form when appropriate
unless else_block or then_block.type == :begin
put "if ("; parse condition; put ') '
wrap { parse then_block, :statement }
else
put "if ("; parse condition; puts ') {'
parse then_block, :statement
sput '}'
while else_block and else_block.type == :if
condition, then_block, else_block = else_block.children
if then_block
put ' else if ('; parse condition; puts ') {'
parse then_block, :statement
sput '}'
else
put ' else if ('; parse s(:not, condition); puts ') {'
parse else_block, :statement
sput '}'
else_block = nil
end
end
if else_block
puts ' else {'; parse else_block, :statement; sput '}'
end
end
if scope
vars = @vars.select {|key, value| value == :pending}.keys
unless vars.empty?
insert mark, "var #{vars.join(', ')}#{@sep}"
vars.each {|var| @vars[var] = true}
end
end
ensure
@scope = scope
end
else
else_block ||= s(:nil)
put '('; parse condition; put ' ? '; parse then_block
put ' : '; parse else_block; put ')'
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems