JetBrains MPS Shapes tutorial error -


i've been following jetbrains mps shapes tutorial: https://confluence.jetbrains.com/display/mpsd32/shapes+-+an+introductory+mps+tutorial

in tutorial section "a more robust generation squares" there following definition:

template reduce_square                                                                                           input square                                                                                                      parameters                                                                                                       << ... >>                                                                                                         content node:                                                                                                       {        graphics g = null;        <tf {            ->$g.setcolor(color.->$red);            ->$g.drawrect($10, $10, $10, $10);         } tf>      }

and reference macro g (which can see in inspector part of editor if put cursor @ ->$g) is:

(outputnode, gencontext, operationcontext, node)->join(node<variabledeclaration> | string) {    gencontext.get output graphicparam (node.parent : canvas);   }

yet when trying rebuild "shapes" language following error message (4 times, twice each ->$g):

type node<> not subtype of node<variabledeclaration>

could please check specify , concepts mapping label correctly? should "label graphicsparam : canvas -> parameterdeclaration", specified in tutorial.


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