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authorBert Belder <bertbelder@gmail.com>2020-09-06 02:34:02 +0200
committerGitHub <noreply@github.com>2020-09-06 02:34:02 +0200
commitc821e8f2f1fb8ad5e9eb00854277cafc8c80b2f5 (patch)
treec429a3c2707a4047fb512443a8468b7e15e5730d /cli/ops/dispatch_json.rs
parent849431eb1d112d1f79f4a327830dc1a5bf22dd47 (diff)
Move JSON ops to deno_core (#7336)
Diffstat (limited to 'cli/ops/dispatch_json.rs')
-rw-r--r--cli/ops/dispatch_json.rs121
1 files changed, 0 insertions, 121 deletions
diff --git a/cli/ops/dispatch_json.rs b/cli/ops/dispatch_json.rs
deleted file mode 100644
index e28c32382..000000000
--- a/cli/ops/dispatch_json.rs
+++ /dev/null
@@ -1,121 +0,0 @@
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-use deno_core::Buf;
-use deno_core::CoreIsolateState;
-use deno_core::ErrBox;
-use deno_core::Op;
-use deno_core::ZeroCopyBuf;
-use futures::future::FutureExt;
-pub use serde_derive::Deserialize;
-use serde_json::json;
-pub use serde_json::Value;
-use std::future::Future;
-use std::pin::Pin;
-
-pub type JsonResult = Result<Value, ErrBox>;
-
-pub type AsyncJsonOp = Pin<Box<dyn Future<Output = JsonResult>>>;
-
-pub enum JsonOp {
- Sync(Value),
- Async(AsyncJsonOp),
- /// AsyncUnref is the variation of Async, which doesn't block the program
- /// exiting.
- AsyncUnref(AsyncJsonOp),
-}
-
-pub fn serialize_result(
- promise_id: Option<u64>,
- result: JsonResult,
- get_error_class_fn: deno_core::GetErrorClassFn,
-) -> Buf {
- let value = match result {
- Ok(v) => json!({ "ok": v, "promiseId": promise_id }),
- Err(err) => json!({
- "err": {
- "className": (get_error_class_fn)(&err),
- "message": err.to_string()
- },
- "promiseId": promise_id
- }),
- };
- serde_json::to_vec(&value).unwrap().into_boxed_slice()
-}
-
-#[derive(Deserialize)]
-#[serde(rename_all = "camelCase")]
-struct AsyncArgs {
- promise_id: Option<u64>,
-}
-
-pub fn json_op<D>(
- d: D,
-) -> impl Fn(&mut CoreIsolateState, &mut [ZeroCopyBuf]) -> Op
-where
- D: Fn(
- &mut CoreIsolateState,
- Value,
- &mut [ZeroCopyBuf],
- ) -> Result<JsonOp, ErrBox>,
-{
- move |isolate_state: &mut CoreIsolateState, zero_copy: &mut [ZeroCopyBuf]| {
- let get_error_class_fn = isolate_state.get_error_class_fn;
-
- assert!(!zero_copy.is_empty(), "Expected JSON string at position 0");
- let async_args: AsyncArgs = match serde_json::from_slice(&zero_copy[0]) {
- Ok(args) => args,
- Err(e) => {
- let buf = serialize_result(None, Err(e.into()), get_error_class_fn);
- return Op::Sync(buf);
- }
- };
- let promise_id = async_args.promise_id;
- let is_sync = promise_id.is_none();
-
- let result = serde_json::from_slice(&zero_copy[0])
- .map_err(ErrBox::from)
- .and_then(|args| d(isolate_state, args, &mut zero_copy[1..]));
-
- // Convert to Op
- match result {
- Ok(JsonOp::Sync(sync_value)) => {
- assert!(promise_id.is_none());
- Op::Sync(serialize_result(
- promise_id,
- Ok(sync_value),
- get_error_class_fn,
- ))
- }
- Ok(JsonOp::Async(fut)) => {
- assert!(promise_id.is_some());
- let fut2 = fut.then(move |result| {
- futures::future::ready(serialize_result(
- promise_id,
- result,
- get_error_class_fn,
- ))
- });
- Op::Async(fut2.boxed_local())
- }
- Ok(JsonOp::AsyncUnref(fut)) => {
- assert!(promise_id.is_some());
- let fut2 = fut.then(move |result| {
- futures::future::ready(serialize_result(
- promise_id,
- result,
- get_error_class_fn,
- ))
- });
- Op::AsyncUnref(fut2.boxed_local())
- }
- Err(sync_err) => {
- let buf =
- serialize_result(promise_id, Err(sync_err), get_error_class_fn);
- if is_sync {
- Op::Sync(buf)
- } else {
- Op::Async(futures::future::ready(buf).boxed_local())
- }
- }
- }
- }
-}