M7

M7 Script Console

Edit, submit, and inspect without leaving the page.

Select Language

Execution Phase

Enter M7 Script Code

function wrapper(a, b) {
  function foo(x) {
    print("hello from m7script\n");
    dump_workspace();
  }

  var outsider = foo;
  outsider(a + b);
  return outsider;
}

var rv = wrapper(1, 2);
rv();

Code is capped at 1,000 characters for the form-encoded preview endpoint.

Submitting console request...

Console request completed. Open the Output tab for the structured response.

There was an error handling the console request.

Instructions

Keep snippets small and focused while testing parser phases.
Use explicit parentheses when you are comparing normalization behavior.
Switch back to the Program tab after resetting the example.

Supported Phases

tokens - lexer-oriented preview of the submitted source.
cst - concrete syntax tree preview for parser structure.
normalize - normalization pass preview for cleanup and rewrites.
ast - abstract syntax tree preview for higher-level structure.
eval - execution preview for the eventual interpreter path.

Limits

This is the v1 prototype parser and interpreter. It is limited to 1000 characters and still has some quirks with parentheses parsing, which can make it slow. v2 solves these problems, but ASTs are not yet compatible with the interpreter.

How It Is Wired

The page root imports a dedicated ActiveTags module.
The workbench uses the shared tabs and other UI services to manage panel state.
The Active Tags page covers the runtime and UI components behind this workbench.