From 2debf2aee1a52c63d28c7bbec9de0d045a496da0 Mon Sep 17 00:00:00 2001
From: Edwin Smith <smith@meta.com>
Date: Tue, 13 Dec 2022 07:07:27 -0800
Subject: [PATCH] --json

Summary:
Add a new `--json` flag that behaves like `hh --json`; in this mode, stdout will be
a json blob with errors:

  {
    errors: ...
    passed: false
  }

this is a subset of `hh` output, which has other fields like `version` and `last_recheck`
with many hh-specific fields.

Reviewed By: bobrenjc93

Differential Revision: D41917506

fbshipit-source-id: 2c3b1b8a0f6d96d513a13e24a8568ac35246447a
---
 hphp/hack/src/errors/cargo/errors/Cargo.toml | 15 ++++++++++++
 hphp/hack/src/errors/errors.rs               |  8 +++++++
 hphp/hack/src/errors/user_error.rs           | 36 ++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 hphp/hack/src/errors/cargo/errors/Cargo.toml
 create mode 100644 hphp/hack/src/errors/errors.rs
 create mode 100644 hphp/hack/src/errors/user_error.rs

diff --git a/hphp/hack/src/errors/cargo/errors/Cargo.toml b/hphp/hack/src/errors/cargo/errors/Cargo.toml
new file mode 100644
index 00000000000..a76638d27f0
--- /dev/null
+++ b/hphp/hack/src/errors/cargo/errors/Cargo.toml
@@ -0,0 +1,15 @@
+# @generated by autocargo from //hphp/hack/src/errors:errors_rs
+[package]
+name = "errors_rs"
+version = "0.0.0"
+edition = "2021"
+
+[lib]
+path = "../../errors.rs"
+crate-type = ["lib", "staticlib"]
+
+[dependencies]
+oxidized = { path = "../../../oxidized" }
+rc_pos = { path = "../../../utils/rust/pos" }
+relative_path = { path = "../../../utils/rust/relative_path" }
+serde_json = { version = "1.0.79", features = ["float_roundtrip", "unbounded_depth"] }
diff --git a/hphp/hack/src/errors/errors.rs b/hphp/hack/src/errors/errors.rs
new file mode 100644
index 00000000000..6d896a45f78
--- /dev/null
+++ b/hphp/hack/src/errors/errors.rs
@@ -0,0 +1,8 @@
+// Copyright (c) Meta Platforms, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the "hack" directory of this source tree.
+mod user_error;
+
+pub use oxidized::errors::*;
+pub use user_error::*;
diff --git a/hphp/hack/src/errors/user_error.rs b/hphp/hack/src/errors/user_error.rs
new file mode 100644
index 00000000000..d20477a2ed3
--- /dev/null
+++ b/hphp/hack/src/errors/user_error.rs
@@ -0,0 +1,36 @@
+// Copyright (c) Meta Platforms, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the "hack" directory of this source tree.
+use oxidized::message::Message;
+use oxidized::user_error::UserError;
+use rc_pos::Pos;
+use relative_path::RelativePathCtx;
+use serde_json::json;
+
+use crate::ErrorCode;
+
+pub fn to_json(e: &UserError<Pos, Pos>, ctx: &RelativePathCtx) -> serde_json::Value {
+    let mut messages = Vec::new();
+    messages.push(msg_json(&e.claim, e.code, ctx));
+    messages.extend(e.reasons.iter().map(|m| msg_json(m, e.code, ctx)));
+    json!({
+        "message": messages,
+    })
+}
+
+fn msg_json(
+    Message(pos, descr): &Message<Pos>,
+    code: ErrorCode,
+    ctx: &RelativePathCtx,
+) -> serde_json::Value {
+    let (line, scol, ecol) = pos.info_pos();
+    json!({
+        "descr": descr.to_string(),
+        "path": pos.filename().to_absolute(ctx),
+        "line": line,
+        "start": scol,
+        "end": ecol,
+        "code": code,
+    })
+}
-- 
2.11.4.GIT