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-# deno_ops
-
-`proc_macro` for generating highly optimized V8 functions from Deno ops.
-
-```rust
-// Declare an op.
-#[op(fast)]
-pub fn op_add(_: &mut OpState, a: i32, b: i32) -> i32 {
-  a + b
-}
-
-// Register with an extension.
-Extension::builder()
-  .ops(vec![op_add::decl()])
-  .build();
-```
-
-## Performance
-
-The macro can optimize away code, short circuit fast paths and generate a Fast
-API impl.
-
-Cases where code is optimized away:
-
-- `-> ()` skips serde_v8 and `rv.set` calls.
-- `-> Result<(), E>` skips serde_v8 and `rv.set` calls for `Ok()` branch.
-- `-> ResourceId` or `-> [int]` types will use specialized method like
-  `v8::ReturnValue::set_uint32`. A fast path for SMI.
-- `-> Result<ResourceId, E>` or `-> Result<[int], E>` types will be optimized
-  like above for the `Ok()` branch.
-
-### Fast calls
-
-The macro will infer and try to auto generate V8 fast API call trait impl for
-`sync` ops with:
-
-- arguments: integers, bool, `&mut OpState`, `&[u8]`, `&mut [u8]`, `&[u32]`,
-  `&mut [u32]`
-- return_type: integers, bool
-
-The `#[op(fast)]` attribute should be used to enforce fast call generation at
-compile time.
-
-Trait gen for `async` ops & a ZeroCopyBuf equivalent type is planned and will be
-added soon.
-
-### Wasm calls
-
-The `#[op(wasm)]` attribute should be used for calls expected to be called from
-Wasm. This enables the fast call generation and allows seamless `WasmMemory`
-integration for generic and fast calls.
-
-```rust
-#[op(wasm)]
-pub fn op_args_get(
-  offset: i32,
-  buffer_offset: i32,
-  memory: Option<&[u8]>, // Must be last parameter. Some(..) when entered from Wasm.
-) {
-  // ...
-}
-```