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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
inner, @inner = @inner, @ast
# use short form when appropriate
unless else_block or then_block.type == :begin
# "Lexical declaration cannot appear in a single-statement context"
if [:lvasgn, :gvasgn].include? then_block.type
@vars[then_block.children.first] ||= :pending
end
put "if ("; parse condition; put ') '
wrap { jscope then_block }
else
put "if ("; parse condition; puts ') {'
jscope then_block
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 ') {'
jscope then_block
sput '}'
else
put ' else if ('; parse s(:not, condition); puts ') {'
jscope else_block
sput '}'
else_block = nil
end
end
if else_block
puts ' else {'; jscope else_block; sput '}'
end
end
ensure
@inner = inner
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
10 entries across 10 versions & 1 rubygems