Module | AST::Sexp |
In: |
lib/ast/sexp.rb
|
This simple module is very useful in the cases where one needs to define deeply nested ASTs from Ruby code, for example, in tests. It should be used like this:
describe YourLanguage::AST do include Sexp it "should correctly parse expressions" do YourLanguage.parse("1 + 2 * 3").should == s(:add, s(:integer, 1), s(:multiply, s(:integer, 2), s(:integer, 3))) end end
This way the amount of boilerplate code is greatly reduced.