Compiler: add support for #emit with template (#17)

lib/papercraft/compiler.rb

@@ -21,6 +21,8 @@ def render_emit_call(o, *a, **b, &block)
       case o
       when nil
         # do nothing
+      when Papercraft::Template
+        o.render(*a, **b, &block)
       when ::Proc
         Papercraft.html(&o).render(*a, **b, &block)
       else

test/fixtures/compiler/emit_template.html

@@ -0,0 +1 @@
+<p>foo</p><p>42</p><br/><q>bar</q>

test/fixtures/compiler/emit_template_compiled.rb

@@ -0,0 +1,3 @@
+->(__buffer__) {
+  __buffer__ << "#{Papercraft.render_emit_call(pr1)}#{Papercraft.render_emit_call(pr2, 42)}<br/>#{Papercraft.render_emit_call(Papercraft.html { q 'bar' })}"
+}

test/fixtures/compiler/emit_template_source.rb

@@ -0,0 +1,9 @@
+pr1 = Papercraft.html { p 'foo' }
+pr2 = Papercraft.html { |x| p x }
+
+->() {
+  emit pr1
+  emit pr2, 42
+  br
+  emit Papercraft.html { q 'bar' }
+}