;;; EXE: %(wasm-interp)s
;;; FLAGS: --help
(;; STDOUT ;;;
usage: wasm-interp [options] filename

  read a file in the wasm binary format, and run in it a stack-based
  interpreter.

examples:
  # parse binary file test.wasm, and type-check it
  $ wasm-interp test.wasm

  # parse test.wasm and run all its exported functions
  $ wasm-interp test.wasm --run-all-exports

  # parse test.wasm, run the exported functions and trace the output
  $ wasm-interp test.wasm --run-all-exports --trace

  # parse test.json and run the spec tests
  $ wasm-interp test.json --spec

  # parse test.wasm and run all its exported functions, setting the
  # value stack size to 100 elements
  $ wasm-interp test.wasm -V 100 --run-all-exports

options:
  -v, --verbose                      use multiple times for more info
  -h, --help                         print this help message
  -V, --value-stack-size=SIZE        size in elements of the value stack
  -C, --call-stack-size=SIZE         size in frames of the call stack
  -t, --trace                        trace execution
      --spec                         run spec tests (input file should be .json)
      --run-all-exports              run all the exported functions, in order. useful for testing
;;; STDOUT ;;)