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Contents
# frozen_string_literal: true
require 'opal/nodes/base'
module Opal
module Nodes
class UndefNode < Base
handle :undef
children :value
def compile
children.each do |child|
line "Opal.udef(self, '$' + ", expr(child), ');'
end
end
end
class AliasNode < Base
handle :alias
children :new_name, :old_name
def compile
push 'Opal.alias(self, ', expr(new_name), ', ', expr(old_name), ')'
end
end
class BeginNode < ScopeNode
handle :begin
def compile
return push 'nil' if children.empty?
if stmt?
compile_children(children, @level)
elsif simple_children?
compile_inline_children(children, @level)
wrap '(', ')' if children.size > 1
elsif children.size == 1
compile_inline_children(returned_children, @level)
else
compile_children(returned_children, @level)
wrap '(function() {', '})()'
end
end
def returned_children
@returned_children ||= begin
*rest, last_child = *children
if last_child
rest + [compiler.returns(last_child)]
else
[s(:nil)]
end
end
end
def compile_children(children, level)
children.each do |child|
line process(child, level), ';'
end
end
COMPLEX_CHILDREN = %i[while while_post until until_post js_return].freeze
def simple_children?
children.none? do |child|
COMPLEX_CHILDREN.include?(child.type)
end
end
def compile_inline_children(children, level)
processed_children = children.map do |child|
process(child, level)
end
processed_children.reject(&:empty?).each_with_index do |child, idx|
push ', ' unless idx == 0
push child
end
end
end
class KwBeginNode < BeginNode
handle :kwbegin
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems