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wiggle: emit a metadata module containing witx document (#1387)

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* wiggle: emit a metadata module containing witx document

* wiggle: put metadata module behind a wiggle_metadata feature

* wasi-common: add wiggle_metadata feature and optional witx dep

* refactor according to alex's advice

* wasi-common: make snapshots pub

* wasi-common: i do need a wiggle_metadata feature to be available

* Tweak features and such

* wiggle: fix tests by passing metadata flag to wiggle-runtime

* wiggle: need to move wiggle-runtime to a non-dev dependency

so that the feature resolves for external users of the crates

Co-authored-by: Alex Crichton <alex@alexcrichton.com>
This commit is contained in:
Pat Hickey
2020-03-25 12:57:44 -07:00
committed by GitHub
parent 1f6890e070
commit bc1a11435e
11 changed files with 67 additions and 4 deletions
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14
crates/wiggle/Cargo.toml
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@@ -16,10 +16,22 @@ proc-macro = true
[dependencies]
wiggle-generate = { path = "crates/generate", version = "0.1.0" }
wiggle-runtime = { path = "crates/runtime", version = "0.1.0" }
witx = { path = "../wasi-common/wig/WASI/tools/witx", version = "0.8.4" }
syn = { version = "1.0", features = ["full"] }
[dev-dependencies]
wiggle-runtime = { path = "crates/runtime", version = "0.1.0" }
wiggle-test = { path = "crates/test", version = "0.1.0" }
proptest = "0.9"
[features]
# These features have no effect on the users of this crate. They are only
# necessary for testing.
# The wiggle proc-macro emits some code (inside `pub mod metadata`) guarded
# by the `wiggle_metadata` feature flag. We use this feature flag so that
# users of wiggle are not forced to take a direct dependency on the `witx`
# crate unless they want it.
wiggle_metadata = ["wiggle-runtime/wiggle_metadata"]
# In order to test that the contents of this metadata module meet
# expectations, we must have this feature enabled for the crate by default.
default = ["wiggle_metadata"]