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# frozen_string_literal: true
require "yarp_test_helper"
class DesugarVisitorTest < Test::Unit::TestCase
def test_and_write
assert_desugars("(AndNode (ClassVariableReadNode) (ClassVariableWriteNode (CallNode)))", "@@foo &&= bar")
assert_desugars("(AndNode (ConstantPathNode (ConstantReadNode) (ConstantReadNode)) (ConstantPathWriteNode (ConstantPathNode (ConstantReadNode) (ConstantReadNode)) (CallNode)))", "Foo::Bar &&= baz")
assert_desugars("(AndNode (ConstantReadNode) (ConstantWriteNode (CallNode)))", "Foo &&= bar")
assert_desugars("(AndNode (GlobalVariableReadNode) (GlobalVariableWriteNode (CallNode)))", "$foo &&= bar")
assert_desugars("(AndNode (InstanceVariableReadNode) (InstanceVariableWriteNode (CallNode)))", "@foo &&= bar")
assert_desugars("(AndNode (LocalVariableReadNode) (LocalVariableWriteNode (CallNode)))", "foo &&= bar")
assert_desugars("(AndNode (LocalVariableReadNode) (LocalVariableWriteNode (CallNode)))", "foo = 1; foo &&= bar")
end
def test_or_write
assert_desugars("(OrNode (ClassVariableReadNode) (ClassVariableWriteNode (CallNode)))", "@@foo ||= bar")
assert_desugars("(OrNode (ConstantPathNode (ConstantReadNode) (ConstantReadNode)) (ConstantPathWriteNode (ConstantPathNode (ConstantReadNode) (ConstantReadNode)) (CallNode)))", "Foo::Bar ||= baz")
assert_desugars("(OrNode (ConstantReadNode) (ConstantWriteNode (CallNode)))", "Foo ||= bar")
assert_desugars("(OrNode (GlobalVariableReadNode) (GlobalVariableWriteNode (CallNode)))", "$foo ||= bar")
assert_desugars("(OrNode (InstanceVariableReadNode) (InstanceVariableWriteNode (CallNode)))", "@foo ||= bar")
assert_desugars("(OrNode (LocalVariableReadNode) (LocalVariableWriteNode (CallNode)))", "foo ||= bar")
assert_desugars("(OrNode (LocalVariableReadNode) (LocalVariableWriteNode (CallNode)))", "foo = 1; foo ||= bar")
end
def test_operator_write
assert_desugars("(ClassVariableWriteNode (CallNode (ClassVariableReadNode) (ArgumentsNode (CallNode))))", "@@foo += bar")
assert_desugars("(ConstantPathWriteNode (ConstantPathNode (ConstantReadNode) (ConstantReadNode)) (CallNode (ConstantPathNode (ConstantReadNode) (ConstantReadNode)) (ArgumentsNode (CallNode))))", "Foo::Bar += baz")
assert_desugars("(ConstantWriteNode (CallNode (ConstantReadNode) (ArgumentsNode (CallNode))))", "Foo += bar")
assert_desugars("(GlobalVariableWriteNode (CallNode (GlobalVariableReadNode) (ArgumentsNode (CallNode))))", "$foo += bar")
assert_desugars("(InstanceVariableWriteNode (CallNode (InstanceVariableReadNode) (ArgumentsNode (CallNode))))", "@foo += bar")
assert_desugars("(LocalVariableWriteNode (CallNode (LocalVariableReadNode) (ArgumentsNode (CallNode))))", "foo += bar")
assert_desugars("(LocalVariableWriteNode (CallNode (LocalVariableReadNode) (ArgumentsNode (CallNode))))", "foo = 1; foo += bar")
end
private
def ast_inspect(node)
parts = [node.class.name.split("::").last]
node.deconstruct_keys(nil).each do |_, value|
case value
when YARP::Node
parts << ast_inspect(value)
when Array
parts.concat(value.map { |element| ast_inspect(element) })
end
end
"(#{parts.join(" ")})"
end
def assert_desugars(expected, source)
ast = YARP.parse(source).value.accept(YARP::DesugarVisitor.new)
assert_equal expected, ast_inspect(ast.statements.body.last)
end
end
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