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Allow wasm embedders to reject wasm modules with unsupported features. (#345)

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Define `WasmError` (and an accompanying `WasmResult`) to represent
errors translating WebAssembly functions. Make `translate_call` and
related functions return `WasmResult`s so that embedders have the
flexibility to reject features they don't support.

Move `InvalidInput` out of `CtonError` and into `WasmError`, where it's
now named `InvalidWebAssembly`, as it's a WebAssembly-specific error
condition. Also extend it to preserve the original error message and
bytecode offset.
This commit is contained in:
Dan Gohman
2018-05-21 20:49:19 -07:00
committed by GitHub
parent 923ea8ada9
commit 89e7d56120
11 changed files with 185 additions and 177 deletions
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lib/wasm/Cargo.toml
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@@ -13,6 +13,8 @@ wasmparser = { version = "0.16.1", default-features = false }
cretonne-codegen = { path = "../codegen", version = "0.8.0", default-features = false }
cretonne-frontend = { path = "../frontend", version = "0.8.0", default-features = false }
hashmap_core = { version = "0.1.4", optional = true }
failure = { version = "0.1.1", default-features = false, features = ["derive"] }
failure_derive = { version = "0.1.1", default-features = false }
[dev-dependencies]
tempdir = "0.3.5"