Blog post notes

closure_app.mirah

class SomeAppWithAnUnmacroedView < ShatnerBase
  get '/' do
    render do
      def_edb render, 'views/index.edb'
    end
  end
end

defining_class.mirah

  class ScopedBody
    def defining_class
      scope.defining_class
    end
  end

first_stacktrace

$ rake test --trace
** Invoke test (first_time)
...
Inferring types...
test_shatner.mirah:44: undefined method `name' for nil:NilClass
    render do
^^^^^^^^^^^^^^
      def_edb render, 'views/index.edb'
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    end
^^^^^^^
rake aborted!
undefined method `name' for nil:NilClass
/Users/nick/hacking/mirah/lib/mirah/ast/scope.rb:164:in `binding_type'
/Users/nick/hacking/mirah/lib/mirah/ast/scope.rb:162:in `binding_type'
/Users/nick/hacking/mirah/lib/mirah/ast/structure.rb:185:in `binding_type'
/Users/nick/hacking/mirah/lib/mirah/ast/structure.rb:149:in `prepare'
/Users/nick/hacking/mirah/lib/mirah/ast/call.rb:97:in `infer'
org

fourth_stacktrace

Inferring types...
Compiling...
  test_shatner.mirah
Done!
cd -
Done Compiling Tests
** Execute test
running tests
Running org.shatner.SinatraCloneTest
Testsuite: org.shatner.SinatraCloneTest
Tests run: 3, Failures: 0, Errors: 1, Time elapsed: 0.037 sec
... elided ...
Testcase: test_some_app_with_view_prints_bananas took 0.002 sec
	Caused an ERROR
(class: org/shatner/SomeAppWithAnUnmacroedView$__xform_tmp_6, method: call signature: ()Ljava/lang/Object;) Incompatible argument to function
java.lang.VerifyError: (class: org/shatner/SomeAppWithAnUnmacroedView$__xform_tmp_6, method: call signature: ()Ljava/lang/Object;) Incompatible argument to function
	at org.shatner.SomeAppWithAnUnmacroedView.<init>(test_shatner.mirah:83)
	at org.shatner.SinatraCloneTest.test_some_app_with_view_prints_bananas(test_shatner.mirah:134)

second_stacktrace

test_shatner.mirah:44: undefined method `defining_class' for #<Mirah::AST::ScopedBody:0x32535e27>
    render do
^^^^^^^^^^^^^^
      def_edb render, 'views/index.edb'
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    end
^^^^^^^
rake aborted!
undefined method `defining_class' for #<Mirah::AST::ScopedBody:0x32535e27>
/Users/nick/hacking/mirah/lib/mirah/ast/structure.rb:155:in `prepare'
/Users/nick/hacking/mirah/lib/mirah/ast/call.rb:97:in `infer'
org/jruby/RubyKernel.java:2082:in `send'

SomeAppWithAnUnmacroedView.java

// Generated from test_shatner.mirah
package org.shatner;
public class SomeAppWithAnUnmacroedView extends org.shatner.ShatnerBase {
  public  SomeAppWithAnUnmacroedView() {
    org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_5 $binding = new org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_5();
    java.lang.String temp$1 = null;
     {
      temp$1 = "/";
    }
    org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_6 temp$2 = new org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_6($binding);
    this.add_callback_for_route("GET", temp$1, temp$2);
  }
  public static class __xform_tmp_5 extends java.lang.Object {
  }
  public static class __xform_tmp_6 extends java.lang.Object implements org.shatner.ShatnerCallable {
    private org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_5 binding;
    public  __xform_tmp_6(org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_5 binding) {
      this.binding = binding;
    }
    public java.lang.Object call() {
      org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_5 $binding = this.binding;
      java.lang.String result = null;
      org.shatner.ShatnerView view = null;
      java.lang.String temp$1 = null;
       {
        temp$1 = this.render(new org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_6.__xform_tmp_8($binding));
      }
      result = temp$1;
      return result;
    }
    public java.lang.Object render(org.shatner.ShatnerView view) {
      org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_5 $binding = this.binding;
      java.lang.String result = null;
      return view.render();
    }
    public static class __xform_tmp_6 extends java.lang.Object implements org.shatner.ShatnerView {
      private org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_6.__xform_tmp_7 binding;
      public  __xform_tmp_6(org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_6.__xform_tmp_7 binding) {
        this.binding = binding;
      }
      public java.lang.String render() {
        org.shatner.SomeAppWithAnUnmacroedView.__xform_tmp_6.__xform_tmp_7 $binding = this.binding;
        return ;
      }
      public java.lang.String render() {
        java.lang.StringBuilder _edbout = null;
        _edbout = new java.lang.StringBuilder();
        _edbout.append("bananas");
        return _edbout.toString();
      }
    }
  }
}

third_stacktrace

Inferring types...
Compiling...
  test_shatner.mirah
test_shatner.mirah:44: undefined method `[]' for nil:NilClass
    render do
          ^^^^
      def_edb render, 'views/index.edb'
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    end
^^^^^^^
rake aborted!
undefined method `[]' for nil:NilClass
/Users/nick/hacking/mirah/lib/mirah/jvm/compiler/jvm_bytecode.rb:530:in `get_binding'
/Users/nick/hacking/mirah/lib/mirah/jvm/compiler/jvm_bytecode.rb:830:in `prepare_binding'
/Users/nick/hacking/mirah/lib/mirah/jvm/compiler/jvm_bytecode.rb:192:in `method_body'
/Users/nick/hacking/mirah/lib/mirah/jvm/compiler/base.rb:260:in `with'