wasm.wast should be named wasm.wat

[sunfishcode]

The file wasm.wast was added in #50.

".wast" is the extension for WebAssembly test files, which contain a superset of the wasm text format.

".wat" is the extension for the plain WebAssembly text format.

See http://webassembly.org/docs/text-format/ for details.

[dcodeIO]

It's actually Binaryen-flavored s-expression syntax. Does that still qualify as .wat? I always had the impression that .wat is linear stack-syntax and .wast pretty much everything else.

[sunfishcode]

It's not binaryen-specific; wabt and the spec interpreter both accept this form.

[dcodeIO]

I see. So, it's safe to assume that S-expression syntax like in this file is actually "official WebAssembly text format" as well?

cc @kripken as the author of the file in question

[sunfishcode]

Yeah. "wast" is all about adding assert_return and other test commands.

[kripken]

I don't care either way myself, but I didn't know this was something the wasm community cared much about? E.g. in binaryen itself we have many wasts that should probably be wats?

[sunfishcode]

http://webassembly.org/docs/text-format/ says:

The recommended file extension for WebAssembly code in textual format is .wat.

Note: The .wast format understood by some of the listed tools is a superset of the .wat format that is intended for writing test scripts.