wickra/bindings/c/Cargo.toml

[package]
name = "wickra-c"
description = "C ABI (cdylib + staticlib) for the Wickra streaming-first technical indicators library — the hub every C-capable language (C, C++, Go, C#, Java, R) links against."
version.workspace = true
authors.workspace = true
edition.workspace = true
rust-version.workspace = true
license.workspace = true
repository.workspace = true
homepage.workspace = true
readme = "README.md"
keywords.workspace = true
categories.workspace = true
publish = false

[lib]
name = "wickra"
crate-type = ["cdylib", "staticlib"]

# The C ABI inherently needs `unsafe` (raw pointers across the FFI boundary,
# `#[export_name]` symbol control). The workspace forbids `unsafe_code`, so this
# crate cannot inherit `workspace = true`; it mirrors every workspace lint and
# only relaxes `unsafe_code` to `allow` (parity with how the proc-macro bindings
# emit their unsafe). The Rust core stays `unsafe`-forbidden — this is the one
# crate where the boundary lives.
[lints.rust]
unsafe_code = "allow"
missing_debug_implementations = "warn"
unreachable_pub = "warn"
unused_must_use = "deny"

[lints.clippy]
all = { level = "warn", priority = -1 }
pedantic = { level = "warn", priority = -1 }
module_name_repetitions = "allow"
must_use_candidate = "allow"
missing_errors_doc = "allow"
missing_panics_doc = "allow"
cast_precision_loss = "allow"
cast_possible_truncation = "allow"
cast_sign_loss = "allow"
similar_names = "allow"
float_cmp = "allow"

[features]
# `parallel` (rayon-backed batch in wickra-core) is on by default for native
# builds. The wasm32-unknown-emscripten target has no threads, so the R
# package's wasm build (r-universe / webR) compiles this crate with
# --no-default-features to drop rayon; wickra-core falls back to its serial
# batch path, which is cfg-gated behind the same feature.
#
# `live-binance` is on by default too so the published C ABI ships the native
# Binance kline feed (tokio + TLS WebSocket) — the six C-ABI languages with no
# native WebSocket (C, C++, Go, R, plus Node/Python via their own bindings) get
# it without a third-party client. The wasm build drops it via
# --no-default-features (a browser has no raw TCP/TLS sockets; WASM users use the
# host `WebSocket`), exactly like rayon.
default = ["parallel", "live-binance"]
parallel = ["wickra-core/parallel"]
live-binance = ["wickra-data/live-binance", "dep:tokio"]

[dependencies]
# Direct path dep rather than `workspace = true`: a member-level
# `default-features = false` is ignored when inheriting a workspace dep that
# does not set it, which would leave rayon in the wasm build. wickra-c is
# `publish = false`, so no version pin is needed (and none to keep in sync).
wickra-core = { path = "../../crates/wickra-core", default-features = false }
wickra-data = { path = "../../crates/wickra-data" }
# Only pulled in by `live-binance`: a single-thread runtime drives the async
# Binance feed behind the blocking C-ABI poll. The feed's own I/O features come
# transitively from wickra-data; this just needs the runtime + timeout.
tokio = { version = "1", features = ["rt", "net", "time"], optional = true }