amadan

oficina / docs Public

core: Rust crate skeleton building for wazero

Plain wasm32-unknown-unknown with a C ABI and no wasm-bindgen, because
the Go host provides no JS glue. panic = abort, since §5.2 treats a
trapped instance's memory as poisoned rather than unwinding across the
boundary.
Paul Campbell pushed by paul@keymail.dev 3dc3a7087dd348172d65392a77e422ccb4c25a6d parent 76da002
6 files changed, +459 −0
  • .gitignore +3 −0
  • core/.gitignore +1 −0
  • core/Cargo.lock +421 −0
  • core/Cargo.toml +15 −0
  • core/src/lib.rs +10 −0
  • scripts/build-wasm.sh +9 −0

Intent

full ledger: core-wire-compat

diff --git a/.gitignore b/.gitignore
index 2c748e7..5d5979f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,6 +34,9 @@ writing/
.zprofile
.zshrc
+# Rust / Cargo build artifacts
+/target
+
# OS cruft.
.DS_Store
Thumbs.db
diff --git a/core/.gitignore b/core/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/core/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/core/Cargo.lock b/core/Cargo.lock
new file mode 100644
index 0000000..fb1aa4e
--- /dev/null
+++ b/core/Cargo.lock
@@ -0,0 +1,421 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "arc-swap"
+version = "1.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c049c0be4daef0b145cb3555416b3b8ef5b7888a38aea1a3a155801fe7b0810b"
+dependencies = [
+ "rustversion",
+]
+
+[[package]]
+name = "async-lock"
+version = "3.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "290f7f2596bd5b78a9fec8088ccd89180d7f9f55b94b0576823bbbdc72ee8311"
+dependencies = [
+ "event-listener",
+ "event-listener-strategy",
+ "pin-project-lite",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82f6aeea286b8eb4dd3431a1be1b59d290ace00f5bfd8e2a159bc2a05e2c1667"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.4",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+ "hashbrown",
+ "lock_api",
+ "once_cell",
+ "parking_lot_core",
+]
+
+[[package]]
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+ "yrs",
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+
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+ "pin-project-lite",
+]
+
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+checksum = "8be9f3dfaaffdae2972880079a491a1a8bb7cbed0b8dd7a347f668b4150a3b93"
+dependencies = [
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+ "pin-project-lite",
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+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "r-efi",
+ "wasm-bindgen",
+]
+
+[[package]]
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+version = "0.14.5"
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+ "cfg-if",
+ "wasm-bindgen",
+]
+
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+dependencies = [
+ "scopeguard",
+]
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+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-link",
+]
+
+[[package]]
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+ "unicode-ident",
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+ "zmij",
+]
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+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+ "wasm-bindgen-shared",
+]
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+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+ "wasm-bindgen-shared",
+]
+
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+
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+dependencies = [
+ "arc-swap",
+ "async-lock",
+ "async-trait",
+ "dashmap",
+ "fastrand",
+ "serde",
+ "serde_json",
+ "smallstr",
+ "smallvec",
+ "thiserror",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/core/Cargo.toml b/core/Cargo.toml
new file mode 100644
index 0000000..748f7a1
--- /dev/null
+++ b/core/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "docs-core"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+yrs = "0.23.5"
+
+[profile.release]
+opt-level = "s"
+lto = true
+panic = "abort"
diff --git a/core/src/lib.rs b/core/src/lib.rs
new file mode 100644
index 0000000..588df2d
--- /dev/null
+++ b/core/src/lib.rs
@@ -0,0 +1,10 @@
+//! The Docs core: Yjs CRDT and (later) text layout, compiled to wasm and
+//! run both under wazero on the server and — for layout only — in the browser.
+
+/// Returns the ABI version this module exports. The Go host checks this on
+/// load and refuses a module it does not understand, so a stale .wasm on a
+/// box fails loudly instead of behaving strangely.
+#[no_mangle]
+pub extern "C" fn docs_core_abi_version() -> u32 {
+ 1
+}
diff --git a/scripts/build-wasm.sh b/scripts/build-wasm.sh
new file mode 100755
index 0000000..db0d9bc
--- /dev/null
+++ b/scripts/build-wasm.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+# Build the core crate for wazero. No wasm-bindgen, no wasm-pack: the Go host
+# provides no JS glue, so the module must be plain wasm32 with a C ABI.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+cargo build --release --manifest-path core/Cargo.toml --target wasm32-unknown-unknown
+out="core/target/wasm32-unknown-unknown/release/docs_core.wasm"
+[ -f "$out" ] || { echo "build-wasm: no artifact at $out" >&2; exit 1; }
+echo "$out ($(wc -c < "$out") bytes)"